Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год
Применить Всего найдено 1000. Отображено 100.
21-06-2012 дата публикации

Vitrectomy probe with adjustable cutter port size

Номер: US20120158030A1
Автор: Jack Robert Auld, John Christopher Huculak, John R. Underwood
Принадлежит: Alcon Research LLC

Vitrectomy probes and system related thereto are disclosed herein. The disclosure describes various example vitrectomy probes having an adjustable cutting port size. Various example features are described for adjusting the size of the cutting port. Further, the disclosure provides examples for adjusting the size of the cutter port while the vitrectomy probe is in operation.

Подробнее
Номер записи: 1
08-11-2012 дата публикации

Retractable tip for vitrectomy tool

Номер: US20120283741A1
Автор: K. Peter Luloh, Michael Annen, Tarek Shawky Hassan
Принадлежит: Insight Instruments Inc

A probe for a vitrectomy tool is provided having a vitreous cutter tube having a blunt tip at a distal end and adapted to be coupled at a proximal end to a handpiece of a vitrectomy tool; a retractable outer trocar tube surrounding the vitreous cutter tube having an open distal end with a sharpened edge; and a retraction mechanism coupled to a proximal end of the outer trocar for selectively extending and retracting the outer trocar tube between a first extended position wherein the sharpened edge of the outer trocar is extended beyond the blunt tip of the vitreous cutter tube to facilitate insertion into the eye and a second retracted position wherein the sharpened edge of the outer trocar is retracted behind the blunt tip of the vitreous cutter tube to facilitate safe operation of the probe.

Подробнее
Номер записи: 2
15-08-2013 дата публикации

APPARATUS FOR CUTTING AND ASPIRATING TISSUE

Номер: US20130211439A1
Автор: Geuder Volker
Принадлежит:

An apparatus for cutting and aspirating tissue from the human body or animal body, particularly for application in vitrectomies, for retinal detachment, etc., having an outer tube () and an inner tube () which can slide back and forth concentrically in the outer tube () with minimal play, wherein the outer tube () is closed on the free end () thereof, and has a lateral opening () near the free end (), with at least one inner cutting edge (), wherein the inner tube () is open on the free end and has an outer cutting edge () at that position, and wherein the cutting edges () work together in a cutting manner when the inner tube () is displaced, characterized in that the inner tube () has at least one lateral opening () with at least one further outer cutting edge () near the free end. 115-. (canceled)16. An apparatus for cutting and aspirating tissue from the human body or animal body , said apparatus comprising:{'b': '1', 'an outer tube (); and'}{'b': 5', '1, 'an inner tube (), which can slide back and forth concentrically in the outer tube () with minimal play,'} [{'b': 1', '3', '6, 'the outer tube () is closed on a free end thereof and has a lateral opening () near the free end, with at least one inner cutting edge ();'}, {'b': 5', '2', '6, 'the inner tube () is open on the free end () and has an outer cutting edge () at that position;'}, {'b': 4', '6', '5, 'the cutting edges (, ) work together in a cutting manner when the inner tube () is displaced; and'}, {'b': 5', '7', '2', '8, 'the inner tube () has at least one lateral opening () near the free end (), with at least one further outer cutting edge ().'}], 'wherein17758. An apparatus according to claim 16 , wherein the lateral opening () of the inner tube () is equipped with two outer cutting edges ().185778. An apparatus according to claim 16 , wherein the inner tube () has at least two lateral openings () near the free end thereof claim 16 , the at least two lateral openings () being equipped with at least ...

Подробнее
Номер записи: 3
14-11-2013 дата публикации

SYSTEMS AND METHODS FOR VITRECTOMY

Номер: US20130303974A1
Автор: Easley James C.
Принадлежит:

A system for conducting a vitrectomy includes: a gas source; a vitrector including a cutting mechanism that opens and closes according to a pressure at the vitrector; and a pulse-generating system receiving gas from the gas source and generating pulses at the vitrector. The pulses cause the pressure at the vitrector to vary according to a cycle, and the varying pressure at the vitrector causes the cutting mechanism of the vitrector to open and close. At a first time in the cycle, the pulse-generating system, raises the pressure at the vitrector to a maximum pressure. At a second time in the cycle, the pulse-generating system reduces the pressure at the vitrector to a minimum pressure that is greater than ambient, the pressure at the vitrector being maintained at least at the minimum pressure. The difference between the maximum pressure and minimum pressure is minimized to reduce gas consumption. 1. A system for conducting a vitrectomy , comprising:a gas source;a vitrector including a cutting mechanism that opens and closes according to a pressure at the vitrector; anda pulse-generating system receiving gas from the gas source and generating pulses at the vitrector, the pulses causing the pressure at the vitrector to vary according to a cycle, the varying pressure at the vitrector causing the cutting mechanism of the vitrector to open and close,wherein, at a first time in the cycle, the pulse-generating system, raises the pressure at the vitrector to a maximum pressure, andat a second time in the cycle, the pulse-generating system reduces the pressure at the vitrector to a minimum pressure that is greater than ambient, the pressure at the vitrector being maintained at least at the minimum pressure.2. The system of claim 1 , wherein the pulse-generating system includes a first valve and a second valve claim 1 , the first valve and the second valve being operable to raise and reduce the pressure at the vitrector according to the cycle.3. The system of claim 1 , wherein ...

Подробнее
Номер записи: 4
28-11-2013 дата публикации

SCANNING ENDOSCOPIC IMAGING PROBES AND RELATED METHODS

Номер: US20130317294A1
Автор: Brennan Jeffrey, Humayun Mark S.
Принадлежит:

A vitrector with integrated imaging capability may include a vitrector tube, a tubular cutter, an actuation mechanism, an optical fiber, and a lens structure for focusing light coupled into the lens structure from the optical fiber beyond the distal end so as to image a region about the focus. 1. A vitrector with integrated imaging capability , the vitrector comprising:a vitrector tube having a side port at a distal end thereof for admitting vitreous therethrough and, associated with the vitrector tube, a suction mechanism for drawing the vitreous towards a proximal end of the vitrector tube;coaxially disposed in the vitrector tube, a tubular cutter and, associated therewith, an actuation mechanism for moving the cutter relative to the vitrector tube so as to cut the vitreous for suctioning by the suction mechanism;an optical fiber coaxially disposed in the cutter; anda lens structure, disposed at a distal end of the tubular cutter and optically coupled to the optical fiber, for focusing light coupled into the lens structure from the optical fiber beyond the distal end so as to image a region about the focus.2. The vitrector of claim 1 , wherein the lens structure is shaped to deflect the light and focus it off-axis claim 1 , movement of the cutter simultaneously causing the focus to be scanned along a line.3. The vitrector of claim 1 , wherein the actuation mechanism is a rotary mechanism that causes the focus to be scanned along an arc segment.4. The vitrector of claim 1 , wherein the actuation mechanism is a reciprocating mechanism that causes the focus to be scanned along an axis parallel to an axis of the vitrector tube.5. The vitrector of claim 1 , wherein the lens structure consists of an angle-cut lens.6. The vitrector of claim 1 , wherein the actuation mechanism comprises a pneumatic claim 1 , hydraulic claim 1 , electromagnetic claim 1 , or motor-driven mechanical actuation mechanism.7. The vitrector of claim 1 , further comprising a rotary joint disposed ...

Подробнее
Номер записи: 5
06-01-2022 дата публикации

CAPSULOTOMY DEVICE AND METHOD

Номер: US20220000665A1
Автор: MARCHINI Enrico
Принадлежит:

A capsulotomy device has a tool holder. The tool holder includes a cutting blade at its distal end and is arranged to move in a distal direction in the device to form an operative state of the device where the cutting blade projects out of a distal end of the capsulotomy device. The at least a portion of the tool holder is adapted in the device's operative state to reciprocate in the distal and proximal directions to urge rotation of the cutting blade. 1. A capsulotomy device comprising a tool holder , the tool holder comprising a circular cutting blade at its distal end and being arranged to move in a distal direction in the device to form an operative state of the device where the cutting blade projects out of a distal end of the capsulotomy device , wherein the tool holder comprising an axially extending rod that is connected at its distal axial end to the cutting blade and is adapted in the device's operative state to reciprocate in the distal and proximal directions to urge oscillating rotation of the cutting blade.2. The capsulotomy device of and comprising a piston and the tool holder being coupled to the piston at its proximal end claim 1 , wherein the urging of the tool holder in the distal direction is via the piston.3. The capsulotomy device of claim 2 , wherein the piston is actuated claim 2 , possibly electrically actuated claim 2 , to urge the tool holder in the distal direction.4. The capsulotomy device of claim 2 , wherein the piston is manually activated.5. The capsulotomy device of and comprising a driving mechanism for reciprocating the at least portion of the tool holder in the distal and proximal directions.6. The capsulotomy device of claim 5 , wherein the driving mechanism is manually activated.7. The capsulotomy device of claim 5 , wherein the driving mechanism is automatically activated claim 5 , for example via an electrical motor.8. The capsulotomy device of claim 1 , wherein the tool holder comprises an outer tube and the rod extending ...

Подробнее
Номер записи: 6
03-01-2019 дата публикации

Systems and methods for actuating a vitrectomy probe using a fluidic amplifier or oscillator

Номер: US20190000672A1
Автор: Brian William Mcdonell
Принадлежит: NOVARTIS AG

The present disclosure discloses systems and methods for actuating a cutter of a vitrectomy probe. The systems and methods involve applying fluidic pressure to a fluidic amplifier or a fluidic oscillator of the vitrectomy probe to cause oscillatory movement of a component of the cutter to perform a cutting action.

Подробнее
Номер записи: 7
02-01-2020 дата публикации

Multiport vitrectomy cutter

Номер: US20200000636A1
Автор: Khalid Al Sabti
Принадлежит: Individual

The multiport vitrectomy cutter (10) is an ocular surgical tool allowing a surgeon to select between a single cutting port configuration and a multiple cutting port configuration. The multiport vitrectomy cutter includes an internal tube (36) and a rotating external tube (22). The external tube has a plurality of external ports (28, 30, 32) for receiving vitreous of the eye. The internal tube (36) has a closed distal end (38), defining a cutting blade, and is slidably disposed within the external tube (22) so that the cutting blade oscillates across a first one of the external ports (28) to cut tissue. The internal tube (36) has at least one internal port (40, 42), such that selective rotation of the external tube (22) with respect to the internal tube (36) selectively aligns the at least one internal port (40, 42) with a remainder of the external ports (30, 32).

Подробнее
Номер записи: 8
11-01-2018 дата публикации

VITRECTOMY PROBE WITH ROTARY CUTTER AND ASSOCIATED DEVICES, SYSTEMS, AND METHODS

Номер: US20180008463A1
Автор: Charles Steven T.
Принадлежит:

Systems, apparatuses, and methods of and for an ophthalmic surgical system are disclosed. An ophthalmic surgical system may include a vitrectomy probe having a housing sized and shaped for grasping by a user. The vitrectomy probe may also include a cutter extending from the housing and being sized to penetrate and treat a patient eye. The cutter may include an outer cutting tube coupled to the housing. The outer cutting tube may have an outer port formed therein that is sized and shaped to receive tissue. The cutter may include a rotatable inner cutting member disposed within the outer cutting tube. The inner cutting member may include a first cutting surface that rotates across the outer port to cut the tissue when the inner cutting member is rotated. The vitrectomy probe may include a pneumatic vane actuator positioned within the housing and configured to rotate the inner cutting member. 1. An ophthalmic surgical system comprising: a housing sized and shaped for grasping by a user;', an outer cutting tube coupled to the housing, the outer cutting tube having an outer port formed therein, wherein the outer port is sized and shaped to receive tissue;', 'an inner cutting member disposed within the outer cutting tube, the inner cutting member rotatable about a longitudinal axis thereof, wherein the inner cutting member includes a first cutting surface that rotates across the outer port to cut the tissue when the inner cutting member is rotated; and, 'a cutter extending from the housing and being sized to penetrate and treat an eye of a patient, the cutter comprising, 'a pneumatic vane actuator positioned within the housing, the pneumatic vane actuator coupled to the inner cutting member and configured to rotate the inner cutting member., 'a vitrectomy probe comprising2. The system of claim 1 , wherein the pneumatic vane actuator comprises a single vane actuator.3. The system of claim 1 , wherein the pneumatic vane actuator comprises a dual vane actuator.4. The system ...

Подробнее
Номер записи: 9
19-01-2017 дата публикации

Surgical instrument

Номер: US20170014269A1
Автор: Dieter Frauenfeld, René DRAHEIM, Volker Geuder
Принадлежит: GEUDER AG

The invention relates to a surgical instrument, in particular a vitrector, comprising an outer tube and an inner tube. Both tubes functionally interact. Said surgical instrument is characterized in that the outer tube and/or the inner tube is made from a light conducting material or is coated with said type of material or said type of material comprises a light conducting fiber, core or similar, and is used to conduct light from the proximal end to the or into the area of the distal end.

Подробнее
Номер записи: 10
16-01-2020 дата публикации

VITRECTOMY INSTRUMENT WITH PRECISION CUTTER STOP

Номер: US20200016001A1
Автор: McDonell Brian William, Valencia Salomon
Принадлежит:

Provided herein are vitrectomy instruments and related systems and methods in which the vitrectomy instruments may include a forward needle stop and a cutter stop to reduce dimensional variation of a cutter of the vitrectomy instruments, allowing for a location of the port formed in a needle of the cutter to be positioned closer to a distal tip of the cutter. With the port located closer to a distal end of the cutter, the port is able to be positioned closer to the retina of an eye. 1. A vitrectomy instrument comprising: a proximal end; and', 'a distal end;, 'a housing comprising [ a proximal end;', 'a distal end;', 'a first lumen; and', 'a port disposed at the distal end of the needle, the port providing fluid communication between the exterior of the needle and the first lumen;, 'a needle projecting from the distal end of the housing, the needle comprising, a second lumen; and', 'a cutting edge adapted to cut tissue drawn into the port; and, 'an inner tube that extends within the first lumen of the needle, the inner tube comprising, 'a needle stop coupled to the proximal end of the needle and comprising a first contact surface;', 'a cutter stop coupled to the inner tube and comprising a second contact surface, the first contact surface configured to contact the second contact surface limiting distal movement of the inner tube and defining a fully extended position of the inner tube; and, 'a reciprocating cutter comprisinga motor operable to reciprocate the inner tube.2. The vitrectomy instrument of claim 1 , wherein the motor comprises a diaphragm disposed in the housing and movable in response to pneumatic pressure claim 1 , the diaphragm connected to the inner tube of the reciprocating cutter such that the inner tube is movable with the diaphragm.3. The vitrectomy instrument of claim 2 , wherein the diaphragm comprises a rigid diaphragm part connected to the inner tube and a flexible membrane connected to the rigid diaphragm part and to the housing.4. The ...

Подробнее
Номер записи: 11
18-01-2018 дата публикации

Active noise cancellation in an ophthalmic surgical system

Номер: US20180018953A1
Автор: Johan Gustaf Ekvall, Kirk Wellington Todd, Nicholas Max GUNN, Paul J. Essex, Steven T. Charles
Принадлежит: NOVARTIS AG

Active noise cancellation is employed to address unwanted acoustical noise generated by various equipment associated with an ophthalmic surgical system. Active noise cancellation may be used within a chassis of the ophthalmic surgical system, within an air compressor used with the ophthalmic surgical system, and within a reciprocating surgical probe used with the ophthalmic surgical system.

Подробнее
Номер записи: 12
26-01-2017 дата публикации

MINIMAL PULSATION OPHTHALMIC PROBE

Номер: US20170020728A1
Автор: McDonell Brian W.
Принадлежит:

An ophthalmic apparatus for performing an ocular surgery may include an ophthalmic probe body having an inner cutting member at least partially disposed within and moveable relative to an aspiration tube within the probe body to facilitate flow of aspiration fluid. A motor within the body may be configured to actuate the inner cutting member relative to the aspiration tube. 1. An ophthalmic apparatus for performing an ocular surgery , comprising:an ophthalmic probe body graspable by a user;an aspiration tube disposed within the probe body and having a lumen arranged to contact aspiration fluid flowing therethrough;a cutter extending from the body and comprising a first cutting member and a second cutting member, the first cutting member being at least partially disposed within and moveable relative to the second cutting member, the first cutting member having a lumen having a first diameter, the second cutting member having a distal end with a port formed therein for receiving patient tissue, the first cutting member configured to be axially displaceable within the second cutting member and within a portion of the lumen of the aspiration tube; anda motor within the probe body configured to actuate the first cutting member relative to the second cutting member and the lumen.2. The ophthalmic apparatus of claim 1 , wherein the motor is disposed between the aspiration tube and the second cutting member.3. The ophthalmic apparatus of claim 1 , wherein the lumen of the aspiration tube has a diameter larger than the outer diameter of the first cutting member.4. The ophthalmic apparatus of claim 1 , wherein the second cutting member and the aspiration tube are statically connected to the probe body.5. The ophthalmic apparatus of claim 1 , wherein the first cutting member claim 1 , the second cutting member claim 1 , and the aspiration tube form an aspiration pathway configured to aspirate tissue cut during the ocular surgery6. The ophthalmic apparatus of claim 1 , wherein ...

Подробнее
Номер записи: 13
23-01-2020 дата публикации

DEVICES AND METHODS FOR OCULAR SURGERY

Номер: US20200022841A1
Автор: Chamness Scott, Clauson Luke W., Reese Brendan, Schaller Michael
Принадлежит:

Devices, systems, and methods for performing an ophthalmic procedure in an eye are disclosed. The devices include a hand-held portion and a distal, elongate member coupled to the hand-held portion having a lumen operatively coupled to a vacuum source. A drive mechanism operatively coupled to the elongate member is configured to oscillate the elongate member. When in use, the device is configured to aspirate ocular material from the eye through the lumen. The drive mechanism retracts the elongate member with a retraction speed profile and advances the elongate member with an extension speed profile. The retraction speed profile is different from the extension speed profile. 1. A medical device for removing lens tissue from inside a capsular bag of an eye , the device comprising:a housing sized to be held in a hand, the housing comprising:at least one vacuum generation source;a variable-speed motor operatively coupled to said at least one vacuum generation source;an actuator for activating the motor to power said at least one vacuum generation source; anda shaft adapted to access a lens inside the capsular bag of the eye, said shaft having a lumen fluidly coupled to said at least one vacuum generation source,wherein actuation of said actuator on said housing causes said at least one vacuum generation source to generate vacuum within said lumen to aspirate said lens tissue.2. The medical device of claim 1 , wherein said at least one vacuum generation source generates pulses of vacuum within the lumen.3. The medical device of claim 1 , wherein said at least one vacuum generation source comprises a plurality of vacuum generation sources housed within said housing.4. The medical device of claim 3 , wherein said housing comprises a reusable portion operatively coupled to a disposable portion claim 3 , and further wherein said plurality of vacuum generation sources are housed within said disposable portion of the housing.5. The medical device of claim 4 , wherein said motor ...

Подробнее
Номер записи: 14
02-02-2017 дата публикации

VITRECTOMY PROBE

Номер: US20170027753A1
Автор: De Santis Giovanni, Fantoni Gualtiero, Paraldi Francesco, Rizzo Stanislao
Принадлежит:

Vitrectomy probe () for the removal of the vitreous humour (a) and comprising a tube () adapted to be put into direct contact with said vitreous (), defining a main axis () and including an internal passage () and a opening () enabling said vitreous () to enter said internal passage () and comprising at least one cutting edge (); a suction system suitable for the creation of vacuum within the internal passage () sucking the vitreous () into the opening (); a drive unit adapted to move said tube () defining a vibrational motion (A) of the tube () which therefore produces pressure waves reducing the viscosity of the vitreous (), and a reciprocating motion (B), having a frequency lower than the frequency of the vibrational motion (A), adapted to enable the cutting edges () to cut the vitreous 1. Vitrectomy probe for removing the vitreous humour comprising a tube adapted to be put into direct contact , at least partially , with said vitreous , defining a main axis and including an internal passage and at least one opening to enable said vitreous to enter the internal passage; a suction system for the creation of vacuum within said internal passage sucking said vitreous into said opening wherein said at least one opening is shaped in such a way as to perform a cutting action through at least one cutting edge; and wherein the probe comprises a drive unit adapted to move said tube with a vibrational motion (A) , which vibration motion generates pressure waves reducing the viscosity of said vitreous , and a reciprocating motion (B) , which reciprocating motion allows at least one cutting edge to cut said vitreous; and wherein said vibrational motion has a frequency which is higher than the frequency of said reciprocating motion (B).2. Vitrectomy probe according to claim 1 , wherein said drive system is configured to move said tube with a combined motion (C) claim 1 , which is the sum of said vibrational motion (A) and said reciprocating motion (B).3. Vitrectomy probe ...

Подробнее
Номер записи: 15
30-01-2020 дата публикации

APPARATUS FOR TISSUE REMOVAL

Номер: US20200030148A1
Автор: GLOVINSKY Yoseph, ISRAELI Nir, Lavi Gilad, Shmukler Vadim
Принадлежит:

An apparatus for use in tissue removal from a body organ is presented. The apparatus comprises a hand-held probe device, a rotating motor device and a connection assembly configured for removably interconnecting between the hand-held probe device and the rotating motor device. The hand-held probe device is disposable and comprises a housing having proximal and distal ends, a rotatable cutting tool extending distally from the distal end of the housing and being configured for cutting and removing tissue during rotation, and a transmission assembly passing inside the housing between the proximal and distal ends and being configured for transmitting rotational power to the rotatable cutting tool. The connection assembly is configured for engaging between the rotating motor device and the transmission assembly to thereby controllably rotate the cutting tool and remove tissue. In some embodiments, the apparatus includes a control unit for controlling operation of the apparatus, the control unit comprises an activation mechanism for activating the rotatable cutting tool, and a controller configured for operating the activation mechanism to generate a single fixed activation signal of a known intensity and duration during a predetermined time interval, thereby restricting operation of the cutting tool during the time interval to the single activation signal only. 1. An apparatus for use in tissue removal from a body organ , the apparatus comprising a hand-held probe device , a rotating motor device; a connection assembly configured for removably interconnecting between said hand-held probe device and said rotating motor device;said hand-held probe device being disposable for using once and comprising a housing having proximal and distal ends, a rotatable cutting tool extending distally from said distal end of the housing and being configured for cutting and removing tissue during rotation, and a transmission assembly passing inside said housing between said proximal and ...

Подробнее
Номер записи: 16
30-01-2020 дата публикации

Redundant Pneumatic Circuit for Reliability Enhancement of Vitrectomy Instruments

Номер: US20200030149A1
Автор: Zhou Jiansheng
Принадлежит:

Systems, methods, and computer-readable media for enhancing the reliability of a pneumatically driven surgical tool by providing a redundant, backup pneumatic circuit for supplying the surgical tool with pneumatic pressure at a normal pressure. 1. An apparatus enhancing the reliability of a pneumatically driven surgical tool , comprising:a source of regulated pneumatic pressure;an isolation valve fluidly coupled to the source of regulated pneumatic pressure and fluidly coupled to both a primary drive valve and a backup drive valve;a first circuit selection valve and a second circuit selection valve, each coupled with a respective first and second chamber of a surgical tool and coupled with both the primary drive valve and the backup drive valve;a first pressure sensor fluidly coupled between the first circuit selection valve and the first chamber of the surgical tool;a second pressure sensor fluidly coupled between the second circuit selection valve and the second chamber of the surgical tool; and monitor the pneumatic pressure from the first pressure sensor and the second pressure sensor;', 'determine when the pneumatic pressure flowing through the first pressure sensor and the second pressure sensor is normal or abnormal;', 'actuate the isolation valve to selectively allow pneumatic pressure to flow to the primary drive valve and suppress pneumatic pressure to the backup drive valve and to suppress pneumatic pressure to flow to the primary drive valve and allow pneumatic pressure to the backup drive valve; and', 'actuate the first and second circuit selection valves to selectively receive pneumatic pressure from the primary drive valve or the backup drive valve and to alternatively drive and vent the first chamber and the second chamber of the surgical tool regardless of whether the isolation valve allows the flow of pneumatic pressure through the primary drive valve or the backup drive valve., 'a control system containing a processor and a non-transitory computer ...

Подробнее
Номер записи: 17
08-02-2018 дата публикации

ENHANCING PERFORMANCE OF A CAPSULOTOMY DEVICE

Номер: US20180036170A1
Автор: Ghannoum Ziad R., Jia Guangyao, Madden Sean Christopher
Принадлежит:

The present disclosure provides a capsulotomy device having a unique insertion sleeve configuration comprising beveling and two notches at the distal end of the insertion sleeve. The unique configuration assures that the motion the capsulotomy loop comprising the heating element goes through during deployment from and retraction into the insertion sleeve is minimized and predictable. 1. A capsulotomy device comprising:a tubular insertion sleeve beveled at a distal end of the tubular insertion sleeve and further comprising two notches disposed opposite one another at the distal end of the tubular insulation sleeve, and wherein a top portion of each notch extends further distally than the bottom portion of each notch;an insulating portion slidably disposed within the tubular insertion sleeve, wherein the insulating portion at a distal end comprises an electrically insulating material separating first and second ends of a heating element; anda substantially planar loop comprising the heating element coupled to the distal end of the insulating portion, wherein the first and second ends of the heating element define a transitional neck that extends at an upward angle from the substantially planar loop, and wherein the substantially planar loop is disposed within the two notches when deployed and retracted from the tubular insertion sleeve.2. The capsulotomy device of claim 1 , wherein proximal ends of the notches are vertically asymmetrically offset at the distal end of the tubular insulation sleeve.3. The capsulotomy device of claim 1 , wherein the proximal ends of the notches are vertically asymmetrically offset 0.20-0.60 mm.4. The capsulotomy device of claim 1 , wherein the heating element is a resistive heating element formed of a nickel titanium alloy.5. The capsulotomy device of claim 1 , wherein a distal end of the bottom portion of each notch is recessed 0.30-1.00 mm from a distal end of the top portion of each notch.6. The capsulotomy device of claim 1 , wherein ...

Подробнее
Номер записи: 18
07-02-2019 дата публикации

ASPIRATING CUTTER AND METHOD TO USE

Номер: US20190038460A1
Автор: Peterson Erik William
Принадлежит:

An ophthalmic surgical cutting apparatus for cutting biological material including a handle, an outer tube attached to the handle and having a closed tip, a port formed in a side wall of the outer tube with a cusp formed by two or more intersecting surfaces, and an inner tube slidable within the outer tube and having a longitudinal axis and an open tip. The inner tube is in fluid communication with the handle, and the cusp of the port and the open tip interface during a cutting motion to fracture and cut biological materials and direct cut materials radially inward into the port. 1. An ophthalmic A surgical cutting apparatus for cutting biological material , the apparatus comprising:a handle;an outer tube attached to the handle and having a closed tip;a port formed in a side wall of the outer tube, the port including an edge; andan inner tube slidable within the outer tube and having a longitudinal axis and an open tip, the inner tube being in fluid communication with the handle,wherein at least one of the outer tube port edge and the inner tube open tip is formed with a cusp.2. The surgical cutting apparatus of claim 1 , wherein the surgical cutting apparatus is pneumatically-powered.3. The surgical cutting apparatus of claim 1 , wherein the open tip of the inner tube is formed with an angled feature claim 1 , and wherein the angled feature of the inner tube is formed by an angled surface claim 1 , the angled surface being non-perpendicular with the longitudinal axis of the inner tube.47-. (canceled)8. The surgical cutting apparatus of claim 1 , wherein the edge of the port is formed with an angled feature claim 1 , and wherein the angled feature of the port is formed as an undercut lip with an angled surface claim 1 , the angled surface being non-perpendicular with the longitudinal axis of the inner tube.910-. (canceled)11. A surgical cutting apparatus for cutting biological material claim 1 , the apparatus comprising:a handle;an outer tube attached to the handle ...

Подробнее
Номер записи: 19
12-02-2015 дата публикации

Intrascleral shunt placement

Номер: US20150045714A1
Автор: Christopher Horvath, Cory Anderson, Laszlo O. Romoda
Принадлежит: Aquesys Inc

Glaucoma can be treated by implanting an intraocular shunt into an eye. The eye has an anterior chamber and sclera. A shunt can be placed into the eye to establish fluid communication between the anterior chamber of the eye and a space between layers of the sclera.

Подробнее
Номер записи: 20
28-02-2019 дата публикации

Surgical tool for forming incisions in ocular tissue with tip providing visibility and related apparatus and method

Номер: US20190060124A1
Автор: David G. Ozinga, David J. Schanzlin
Принадлежит: Refocus Group Inc

A surgical tool includes a housing having a driver and a surgical blade configured to be bi-directionally rotated by the driver. The surgical tool also includes a footplate configured to receive the surgical blade. The footplate includes a bottom portion configured to rest on ocular tissue of a patient's eye. The bottom portion includes a slot configured to allow passage of a portion of the surgical blade through the bottom portion of the footplate and into the ocular tissue of the patient's eye. The footplate also includes multiple walls having multiple openings. The openings are configured to receive additional portions of the surgical blade such that the surgical blade is rotatable relative to the footplate. The footplate further includes an additional opening or open side configured to allow viewing of the surgical blade and the slot during use.

Подробнее
Номер записи: 21
10-03-2016 дата публикации

SURGICAL HAND PIECE FOR CATARACT REMOVAL

Номер: US20160067091A1
Автор: Humayun Mark, Kashani Amir, McCormick Matthew, Wells Trent
Принадлежит:

The disclosure herein provides systems and devices for mechanically cutting and removing lens tissue or cataract from an eye of a patient without use of ultrasonic energy. 1. A device for performing ophthalmic surgery for cataract removal comprising:a casing; one or more device tips; and', 'one or more inner housings; and, 'one or more inner assemblies comprisingan outer housing.2. The device of claim 1 , wherein the one or more inner assemblies comprise a rotating element configured to rotate during use of the device.3. The device of claim 1 , wherein the one or more inner assemblies are configured to be coupled to a motor to produce rotational motion.4. The device of claim 1 , wherein the device is used for cataract removal during ophthalmic surgical procedures.5. The device of claim 4 , wherein the device is used to manipulate claim 4 , cut claim 4 , fragment claim 4 , or remove various eye tissues.6. The device of claim 1 , wherein the one or more device tips comprise smooth edges configured to contact a surface of a patient's eye.7. The device of claim 1 , wherein a portion of the one or more inner assemblies is longitudinally surrounded by the outer housing along a length of the one or more inner assemblies.8. The device of claim 7 , wherein the portion of the one or more inner assemblies surrounded by the outer housing is configured to rotate within the outer housing.9. The device of claim 1 , wherein a proximal end of the one or more inner assemblies is configured to be coupled to a distal end of the casing.10. The device of claim 1 , further comprising an aspiration tube and aspiration pathway configured to be in fluid communication with a vacuum source claim 1 , wherein the vacuum source can aspirate fragmented tissue from a patient's eye.11. The device of claim 1 , further comprising an infusion tube and an infusion pathway configured to provide an infusion of fluid into a surgical area.12. The device of claim 1 , wherein the one or more device tips ...

Подробнее
Номер записи: 22
27-02-2020 дата публикации

DEVICES AND METHODS FOR CUTTING LENTICULAR TISSUE

Номер: US20200060875A1
Автор: Clauson Luke W., Guguchkova Maria Tsontcheva
Принадлежит:

An exemplary surgical device includes an element positionable within a shaft having a lumen defined therethrough with the element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen. The element forming a closed loop which is positioned around the lens while the lens is within a capsular bag. The closed loop is reduced in size to form a cut in the lens. 1. A device for cutting a lens within a capsular bag of an eye , the lens having a posterior surface and an anterior surface , the device comprising:a tubular shaft comprising an opening in a distal portion of the tubular shaft;a cutting element having a tip portion, a second portion, a first proximal end region, and a second proximal end region, wherein said first and second proximal end regions of the cutting element are positioned internal to the device; andan actuator operatively coupled to at least one of the first and second proximal end regions of the cutting element,wherein, when the cutting element is in a first configuration, the tip portion of the cutting element is capable of being positioned over the anterior surface of the lens and the second portion of the cutting element is positioned within the tubular shaft of the device, andwherein, when the cutting element is in a second configuration, the second portion of the cutting element is fully extended out through the opening such that an approximately closed loop is formed entirely by the cutting element, said approximately closed loop having a first open area, wherein the first open area comprises a first, larger inner radius of curvature and a second, smaller inner radius of curvature, and wherein the approximately closed loop formed entirely by the cutting element extends both distally of a distal-most portion of the tubular shaft and proximally of the distal-most portion of the tubular shaft.2. The device of claim 1 , wherein as the cutting element extends from the ...

Подробнее
Номер записи: 23
09-03-2017 дата публикации

VITRECTOMY SURGICAL APPARATUS WITH CUT TIMING BASED ON PRESSURES ENCOUNTERED

Номер: US20170065456A1
Автор: Gerg James B., Hickey Lauren M., Lee Fred C., Lynn Kyle E., ZHANG Zheng
Принадлежит:

A vitrectomy apparatus is provided, including a pressure source, a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device, a sensor configured to sense pressure provided from the cut valve, and a controller configured to control operation of the cut valve based on pressure sensed by the sensor. The controller is configured to monitor pressures encountered and alter cut valve timing based on pressure conditions previously encountered. 18-. (canceled)9. A method for performing a vitrectomy procedure , comprising:sensing pressure provided from a pressure source through a cut valve and to a vitrectomy handpiece; andcontrolling operation of the cut valve based on pressure sensed;wherein controlling operation of the cut valve based on pressure sensed comprises monitoring pressures encountered and altering cut valve timing based on pressure conditions previously encountered.10. The method of claim 9 , wherein controlling operation of the cut valve comprises monitoring and maintaining a peak pressure value and trough pressure value encountered claim 9 , wherein peak pressure encountered represents a maximum pressure encountered and trough pressure comprises a minimum pressure encountered.11. The method of claim 10 , wherein controlling operation of the cut valve comprises altering cut valve timing based on a pressure encountered relative to the peak pressure value and the trough pressure value.12. The method of claim 11 , wherein controlling operation of the cut valve comprises monitoring a time following transition between issuing a command to the cut valve and one from the group consisting of the peak pressure value and the trough pressure value claim 11 , and altering a future command time for a future command issued to the cut valve based on the time following transition.13. The method of claim 12 , wherein controlling operation of the cut valve ...

Подробнее
Номер записи: 24
17-03-2016 дата публикации

DEVICES AND METHODS FOR THE REMOVAL OF LENTICULAR TISSUE

Номер: US20160074220A1
Автор: Clauson Luke W., GUGUCHKOVA Maria Tsontchev, IANCHULEV Pravoslava Tsontchev, IANCHULEV Tsontcho Alexandrov, Lari David R., Schaller Michael Paul
Принадлежит:

An exemplary surgical device includes a shaft with a lumen defined therethrough and an element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen; wherein motion from the stored position to the deployed position causes a first leg of the element to advance distally relative to the distal end of the shaft, and causes a second leg of the element to move proximally relative to the distal end of the shaft. 1. A surgical device , comprising:a shaft with a lumen defined therethrough; andan element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen;wherein motion from the stored position to the deployed position causes a first leg of the element to advance distally relative to the distal end of the shaft, and causes a second leg of the element to move proximally relative to the distal end of the shaft.2. The surgical device of claim 1 , wherein all but a tip portion of the element is positioned within the lumen.3. The surgical device of claim 1 , wherein in the deployed position the majority of the element positioned outside the lumen is located to one side of the longitudinal axis of the lumen.4. The surgical device of claim 1 , wherein the element is composed of superelastic metal.5. The surgical device of claim 4 , wherein the element undergoes superelastic shape change during the transition of the element from the stored position to the deployed position as a result of increased temperature at the element.6. The surgical device of claim 1 , wherein the element undergoes shape change during the transition of the element from the stored position to the deployed position as a result of the extension of the element out of the lumen.7. The surgical device of claim 1 , wherein the element is a wire.8. The surgical device of claim 1 , wherein the element is a strap.9. The surgical device of claim 1 , ...

Подробнее
Номер записи: 25
16-03-2017 дата публикации

VITRECTOMY SURGICAL APPARATUS

Номер: US20170071789A1
Автор: Gerg James B., Hickey Lauren M., Lee Fred C., Lynn Kyle E., ZHANG Zheng
Принадлежит:

A vitrectomy apparatus is provided, including a pressure source, a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device, a sensor configured to sense pressure provided from the cut valve, and a controller configured to control operation of the cut valve based on pressure sensed by the sensor. 16-. (canceled)7. A method for performing a vitrectomy procedure , comprising:sensing pressure provided from a pressure source through a cut valve and to a vitrectomy handpiece; andcontrolling operation of the cut valve based on pressure sensed.8. The method of claim 7 , wherein controlling operation of the cut valve based on pressure sensed controls operation of a cutting blade within the vitrectomy handpiece.9. The method of claim 7 , wherein pressure is sensed using a sensor claim 7 , and wherein controlling operation of the cut valve employs a controller.10. The method of claim 7 , wherein the cut valve is pneumatically connected to the pressure source claim 7 , a sensor claim 7 , and the vitrectomy handpiece.11. The method of claim 9 , wherein the sensor is attached to a pneumatic manifold configured to have gas pass therethrough claim 9 , wherein the pneumatic manifold is configured for attachment to components of a vitrectomy apparatus.12. The method of claim 7 , wherein the pressure source comprises a pump comprising a pump core and a pressure regulator configured to control pressure supplied from the pump core.1318-. (canceled) This application is a divisional of and claims priority to U.S. patent application Ser. No. 13/717,071, filed Dec. 17, 2012, the entire contents of which are incorporated herein by reference.U.S. patent application Ser. No. 13/717,071 was filed concurrently with the following applications, both of which are incorporated herein by reference:“Vitrectomy Surgical Apparatus with Regulating of Material Processed”, inventors Kyle ...

Подробнее
Номер записи: 26
05-03-2020 дата публикации

SURGICAL SYSTEMS INCLUDING A POWER LOSS MITIGATION SUBSYSTEM

Номер: US20200069467A1
Автор: MERCADO FRED
Принадлежит:

Systems, circuits, and methods to mitigate effects of short-term power losses in medical systems are provided. An exemplary surgical system includes a fluidics subsystem, a surgical instrument subsystem that couples to a surgical instrument and a power supply subsystem coupled to the surgical instrument subsystem. The power supply subsystem includes a main power supply connectable to AC mains to generate a voltage, a power bus connected to the main power supply, an alternate power supply, and a circuit that monitors the voltage on the power bus for powering the surgical instrument subsystem. The circuit automatically connects the power bus to the alternate power supply when the voltage drops below a reference voltage due to a power loss from the main power supply. 1. A surgical system comprising:a fluidics subsystem;a surgical instrument subsystem that couples to a surgical instrument, wherein the surgical instrument is coupled to the fluidics subsystem; and a main power supply connectable to AC mains to generate a voltage;', 'a power bus connected to the main power supply;', 'an alternate power supply; and', 'a circuit that monitors the voltage on the power bus for powering the surgical instrument subsystem and automatically connects the power bus to the alternate power supply when the voltage drops below a reference voltage due to a power loss from the main power supply., 'a power supply subsystem coupled to the surgical instrument subsystem, the power supply subsystem comprising2. The ophthalmic surgical system of claim 1 , wherein the alternate power supply comprises at least two capacitors.3. The ophthalmic surgical system of claim 2 , wherein the alternate power supply comprises a two-stage alternate power supply.4. The ophthalmic surgical system of claim 3 , wherein a first stage of the two-stage alternate power supply is coupled to the power bus and a high-voltage capacitor and wherein a second stage of the two-stage alternate power supply is coupled to a ...

Подробнее
Номер записи: 27
18-03-2021 дата публикации

INFUSION PRESSURE CONTROL SYSTEM

Номер: US20210077720A1
Автор: ANGELINI Giovanni Battista, MALVASI Carlo, QUERZOLI Giorgio, ROSSI Tommaso
Принадлежит:

An infusion pressure control system for ophthalmic surgery includes intraocular pressure detection means, arterial pressure detection means and a control unit operatively connected to the intraocular pressure detection means and the arterial pressure detection means and configured for calculating the mean ocular perfusion pressure value based on intraocular pressure and arterial pressure values provided by the intraocular pressure detection means and by the arterial pressure detection means, and for comparing the calculated mean ocular perfusion pressure value and at least one predetermined threshold value. 1. An infusion pressure control system for ophthalmic surgery , the system including:intraocular pressure detection means;arterial pressure detection means; anda control unit operatively connected to said intraocular pressure detection means and said arterial pressure detection means and configured for calculating a mean ocular perfusion pressure value based on intraocular pressure and arterial pressure values provided by said intraocular pressure detection means and by said arterial pressure detection means, and for comparing said calculated mean ocular perfusion pressure value and at least one predetermined threshold value.20. The system of claim 1 , wherein the control unit is configured to generate an alarm signal if the calculated mean ocular perfusion pressure value is below the predetermined threshold value.3. The system claim 1 , further comprising an electromedical apparatus adapted to be connected to a patient at least by an infusion line suitable for dispensing an infusion fluid at an infusion pressure claim 1 , said electromedical apparatus being adapted to allow adjustment of an infusion pressure.4. The system of claim 1 , wherein said intraocular pressure detection means comprise an intraocular pressure sensor.5. The system of claim 1 , wherein said intraocular pressure detection means are suitable for calculating the intraocular pressure value ...

Подробнее
Номер записи: 28
31-03-2022 дата публикации

ERGONOMIC PHACOEMULSIFICATION HANDPIECE WITH ROTATING NEEDLE

Номер: US20220096270A1
Автор: Brady John
Принадлежит:

An apparatus, system and method for a phacoemulsification handpiece. The handpiece may include: a proximal portion having a longitudinal axis, and first and second ends, wherein at least aspiration, irrigation and power inputs enter the first end; a distal portion along the longitudinal axis and comprising, at a distalmost portion thereof from the proximal portion a needle configured to be vibrated by a transducer powered by the power input, the transducer residing within the distal portion and being associated with a horn having a circumferential flange proximal portion. The handpiece further includes a thumb wheel circumferentially associated with the circumferential flange within the distal portion, and having a portion thereof extending out of the distal portion to allow for rotational actuation of the extending portion. Rotational actuation of the thumb wheel thus affects a rotation of the circumferential flange and in turn, the horn and needle coupled therewith. 1. A phacoemulsification handpiece comprising:a proximal portion having a longitudinal axis, and a first end and a second end, wherein at least aspiration, irrigation and power inputs enter the first end;{'claim-text': 'a needle configured to vibrated by a transducer powered by the power input, the transducer residing within the distal portion and being associated with a horn having a circumferential flange;', '#text': 'a distal portion along the longitudinal axis and comprising, at a distalmost portion thereof from the proximal portion:'}a thumb wheel circumferentially associated with the circumferential flange, and having a portion thereof extending out of the distal portion to allow for rotational actuation of the extending portion;wherein rotational actuation of the thumb wheel affects a rotation of the circumferential flange.2. The handpiece of claim 1 , further comprising a feedback aspect associated with the rotational actuation.3. The handpiece of claim 2 , wherein the feedback aspect comprises ...

Подробнее
Номер записи: 29
21-03-2019 дата публикации

Cataract Posterior/Wedge Chopper

Номер: US20190083311A1
Автор: Depenbusch Michael Jerome
Принадлежит:

Disclosed here is an apparatus and method for cataract surgery. The apparatus is an instrument referred to as a chopper that allows the reduction or elimination of ultrasound and/or laser energy introduced into the eye during cataract surgery. The chopper instrument is bent at an angle, such as an angle less than 110 degrees or less than 90 degrees, to provide a posterior (to anterior) chopping, and a wedge compression of the cataract. The bend in the chopper instrument, among other features, introduces refined vector forces that help in breaking/chopping the cataract with ease. The apparatus allows laser free/ultrasound free cataract extraction in dense cataracts. The chopper apparatus, a vacuum-tip and the proper vacuum settings, when used for performing a cataract surgery by a surgeon, allows the surgeon to break up the nucleus into small enough fragments that a true ultrasound-free/laser-free small incision cataract surgery can be accomplished with ease. 1. A method for performing an ultrasound and laser free cataract surgery using a chopper apparatus including a bend near a distal end , the method comprising:placing the chopper apparatus into an eye of a patient to access a cataract;rotating the chopper apparatus such that a tip of the chopper apparatus at the distal end points toward a posterior pole of the cataract;positioning the chopper apparatus around a nucleus of the cataract such that an equator of the nucleus is straddled at the bend; andfragmenting the nucleus into a plurality of fragments.2. The method of claim 1 , further comprising:removing the plurality of fragments from the eye using a vacuum tip.3. The method of claim 2 , further comprising:freeing the plurality of fragments from one another; andsimultaneously fragmenting the nucleus and feeding at least one of the plurality of fragments into the vacuum tip for removal from the eye.4. The method of claim 2 , further comprising:cutting a first incision in a cornea of the eye for insertion of the ...

Подробнее
Номер записи: 30
30-03-2017 дата публикации

OPHTHALMIC SURGICAL CUTTING SYSTEM WITH VARIED CROSS SECTION TUBE-SET

Номер: US20170087015A1
Автор: Rogers Daniel David, Wang Andrew Chen
Принадлежит:

An ophthalmic surgical cutting apparatus. In one instance, the apparatus includes a pneumatically-powered surgical cutter driven by a pneumatic pulse generator and a tubing assembly comprising multi-stage tubing connecting the generator to the cutter. The multi-stage tubing has a length of about two feet or more and includes a first-stage tube and a second-stage tube. The first-stage tube has a first end coupled to the output port of the generator, a second end opposite the first end, and a first inner channel having a first diameter for transmitting the pressure pulses to the cutter. The second-stage tube has a first end in pneumatic communication with the second end of the first-stage tube, a second end opposite the first end of the second-stage tube coupled to the cutter, and a second inner channel having a second diameter different than the first diameter for transmitting the pressure pulses to the cutter. 1. An ophthalmic surgical cutting apparatus , the apparatus comprising:a pneumatically-powered surgical cutter;a first tubing assembly transmitting a first plurality of pressure pulses from a pneumatic pulse generator to the pneumatically-powered surgical cutter; anda second tubing assembly transmitting a second plurality of pressure pulses from the pneumatic pulse generator to the pneumatically-powered surgical cutter;the first tubing assembly comprising multi-stage tubing having a length of about two feet or more and including a first end coupled to an output port of the pneumatic pulse generator,', 'a second end opposite the first end, and', 'a first inner channel for transmitting the first plurality of pressure pulses to the surgical cutter, the first inner channel having a first cross-sectional area, and, 'a first-stage, the first-stage having'} a first end in pneumatic communication with the second end of the first-stage,', 'a second end opposite the first end of the second-stage coupled to the pneumatically-powered surgical cutter, and', 'a second inner ...

Подробнее
Номер записи: 31
19-06-2014 дата публикации

Burst Mode Vitrectomy System

Номер: US20140171996A1
Автор: McDonell Brian William, Vasudevan Venkatesh
Принадлежит: Alcon Research, Ltd.

A vitrectomy surgical system includes a vitrectomy probe having a cutting portion comprising an inner tube, an outer tube, and an aspiration port. The inner tube may be movable relative to the outer tube to cut vitreous fibers. The system also includes a controller associated with the vitrectomy probe and configured to control movement of the inner tube by generating control signals corresponding to a cutting scheme including a plurality of series of cuts with each cut being evenly spaced in time, the plurality of series of cuts separated by a recovery period. 1. A vitrectomy surgical system , comprising:a vitrectomy probe having a cutting portion comprising an inner tube, an outer tube, and an aspiration port, the inner tube being movable relative to the outer tube to cut vitreous fibers; anda controller associated with the vitrectomy probe and configured to control movement of the inner tube by generating control signals corresponding to a cutting scheme including a plurality of series of cuts with each cut being evenly spaced in time, the plurality of series of cuts separated by a recovery period.2. The system of claim 1 , wherein the recovery period is a period of time equal to or greater than a single cutting cycle of one of the plurality of series of cuts.3. The system of claim 1 , wherein the system is selectively operated in a burst mode and a continuous mode claim 1 , wherein when operating in the continuous mode claim 1 , the controller is configured to generate control signals corresponding to a cutting scheme including a series of cuts evenly spaced in time that are not separated by a recovery period.4. The system of claim 1 , wherein the cutting scheme is implemented only for cutting rates above a cutting rate threshold.5. The system of claim 1 , further comprising a valve controlling fluid flow to the vitrectomy probe claim 1 , the valve being controlled by said control signals generated by the controller.6. The system of claim 1 , further comprising ...

Подробнее
Номер записи: 32
26-06-2014 дата публикации

Scanning endoscopic imaging probes and related methods

Номер: US20140180133A1
Автор: Jeffrey Brennan, Mark S. Humayun
Принадлежит: oProbe LLC

An injection device with integrated imaging capability may include a hollow, tubular needle, an optical fiber disposed in parallel to the needle, a detector, a lens structure for focusing light coupled into the lens structure from the optical fiber at a focus beyond the distal end of the needle, and an imaging engine for processing a signal received from the detector via the optical fiber and the lens structure so as to generate an image of a region about the focus.

Подробнее
Номер записи: 33
08-04-2021 дата публикации

TREPHINATION APPARATUS AND METHOD

Номер: US20210100687A1
Автор: Dudee Jitander
Принадлежит:

A trephination apparatus can include a first member, a blade, and a second member. The first member can include a through-aperture and a first internal chamber. The first member can also include opening to the first internal chamber that can surround the through-aperture in a plane. The blade can have an outwardly-facing male profile at least partially matching the through-aperture and have a cutting edge. The second member can include a first body sized to be received in the through-aperture with the blade. The blade can be positionable between the first body and the female profile at the second opening. The second member can also include a second internal chamber with an opening extending about the aperture axis in the plane with an opening to the first internal chamber. 1. A trephination apparatus comprising: a through-aperture extending between a first opening and second opening spaced from said first opening, said through-aperture centered on an aperture axis and defining a female profile at said second opening in a plane normal to said aperture axis,', 'a first internal chamber,', 'a third opening to said first internal chamber, and', 'a fourth opening to said first internal chamber spaced from said third opening, said fourth opening surrounding said second opening in the plane; and, 'a first member witha blade having an outwardly-facing male profile at least partially matching said female profile and received in said through-aperture and also defining a first cutting edge; and a first body sized to be received in said through-aperture with said blade, said blade positionable between said first body and said female profile at said second opening,', 'a second internal chamber,', 'a fifth opening to said second internal chamber, and', 'a sixth opening to said second internal chamber spaced from said fifth opening, said sixth opening extending about said aperture axis in the plane with said fourth opening., 'a second member with2. The trephination apparatus of ...

Подробнее
Номер записи: 34
19-04-2018 дата публикации

FORMED CUTTER FOR VITRECTOMY PROBE

Номер: US20180104101A1
Автор: Lopez Jose Luis
Принадлежит:

Vitreoretinal probes and methods related thereto are disclosed herein. A vitreoretinal probe may include a needle and a cutter slidably disposed within the needle. The cutter may include a tubular body having a distal end. The distal end may include a first section having an outer diameter that is greater than an outer diameter of the tubular body and a second section having an outer diameter that is not in contact with an inner surface of the needle. 1. A vitrectomy probe comprising:a needle; anda cutter slidably disposed within the needle, wherein the cutter comprises a tubular body having a distal end, wherein the distal end comprises a first section having an outer diameter that is greater than an outer diameter of the tubular body and a second section having an outer surface that is not in contact with an inner surface of the needle.2. The vitrectomy probe of claim 1 , wherein the cutter comprises a side cutout in the distal end claim 1 , wherein the side cutout is configured to reduce friction between the needle and the cutter.3. The vitrectomy probe of claim 2 , wherein the side cutout is formed in a lower portion of the distal end.4. The vitrectomy probe of claim 1 , wherein the cutter comprises a lateral port in the tubular body.5. The vitrectomy probe of claim 4 , wherein the cutter comprises a distal port in the distal end of the tubular body.6. The vitrectomy probe of claim 5 , wherein the cutter further comprises a proximal cutting edge and a distal cutting edge claim 5 , wherein the proximal cutting edge is formed by a distal side of the lateral port claim 5 , and wherein the distal cutting edge is formed by a distal side of the distal end.7. The vitrectomy probe of claim 1 , wherein the second section comprises two or more flat sections on an outer surface of the distal end.8. The vitrectomy probe of claim 1 , wherein the cutter has a bend ranging from about 2° to about 5°.9. The vitrectomy probe of claim 8 , wherein the bend is configured to allow a ...

Подробнее
Номер записи: 35
02-04-2020 дата публикации

OPHTHALMIC SURGICAL SYSTEMS,METHODS, AND DEVICES

Номер: US20200100940A1
Автор: Brennan Jeffrey David, Humayun Mark
Принадлежит:

The disclosure herein provides ophthalmic surgical systems, methods, and devices. In one embodiment, a handheld medical instrument for surgical procedures comprises a body having an exterior surface shaped to be held and manipulated by a human hand; a surgical tool extending from a distal end of the body; and a pressure-sensitive button for controlling operation of the surgical tool, the pressure-sensitive button comprising an actuation surface positioned adjacent the exterior surface of the body, the pressure-sensitive button further comprising a pressure detection device, the pressure detection device configured to enable output of a signal for controlling a function of the surgical tool, the signal being proportional to a position of the actuation surface. 1. A handheld medical instrument for surgical procedures , the handheld medical instrument comprising:a body having an exterior surface shaped to be held and manipulated by a human hand;a surgical tool extending from a distal end of the body; anda pressure-sensitive button for controlling operation of the surgical tool, the pressure-sensitive button comprising an actuation surface positioned adjacent the exterior surface of the body,the pressure-sensitive button further comprising a pressure detection device, the pressure detection device configured to enable output of a signal for controlling a function of the surgical tool, the signal being proportional to a position of the actuation surface.2. The handheld medical instrument of claim 1 , wherein the pressure detection device comprises a force sensitive resistor that changes a resistance based on the position of the actuation surface.3. The handheld medical instrument of claim 2 , wherein the actuation surface extends circumferentially around an exterior of the body and is positioned at least partially around a conductive surface of the force sensitive resistor.4. The handheld medical instrument of claim 1 , wherein the pressure detection device comprises an ...

Подробнее
Номер записи: 36
28-04-2016 дата публикации

INTERNALLY ILLUMINATED SURGICAL PROBE

Номер: US20160113722A1
Автор: HEEREN TAMMO
Принадлежит:

A surgical probe (e.g., for treating an eye of a patient) includes a body, a cutting element extending distally from the body including a sleeve member comprising a port at an end, and an inner member disposed within the sleeve member, the inner member being movable (e.g., axially) with respect to the sleeve member to open and close the port. The probe further includes an illumination element disposed within the sleeve member, the illumination element configured to project light out of the port. 1. A surgical probe , the probe comprising:a body; a sleeve member comprising a port at an end;', 'an inner member disposed within the sleeve member, the inner member being movable with respect to the sleeve member to open and close the port; and', 'an illumination element disposed within the sleeve member, the illumination element configured to project light out of the port when the port is open., 'a cutting element extending distally from the body including2. The surgical probe of claim 1 , wherein the illumination element is secured to the inner member.3. The surgical probe of claim 2 , wherein the inner member comprises a notch on a distal end of the illumination element claim 2 , the notch being positioned between an illuminating portion of the illumination element and the inner member and arranged so that light from the illuminating portion is directed towards the port.4. The surgical probe of claim 2 , wherein the illumination element is positioned on a side of the inner member that is opposite from the port.5. The surgical probe of claim 1 , wherein the illumination element is secured to the sleeve member.6. The surgical probe of claim 5 , wherein the illumination member is positioned such that light being emitted from the illumination element is directed out of the port.7. The surgical probe of claim 1 , wherein an illumination profile from the illumination element is directed out of the port and towards a distal end of the cutting element.8. The surgical probe of ...

Подробнее
Номер записи: 37
05-05-2016 дата публикации

VITRECTOMY PROBE WITH A COUNTERBALANCED ELECTROMAGNETIC DRIVE

Номер: US20160120697A1
Автор: Farley Mark
Принадлежит:

According to one example, an ophthalmic surgical probe for treating an eye of a patient includes a body arranged for grasping by a surgeon and a cutting element extending distally from the body. The cutting element includes a sleeve member and an inner member disposed within the sleeve member, the inner member being movable axially with respect to the sleeve member. The probe also includes an actuating element configured to reciprocally move the inner member relative to the sleeve member. The actuating element includes a first coil secured within the body, a first magnet operatively secured to the inner member, and a second magnet that is not secured to the inner member, the second magnet being positioned and arranged to move in an opposite direction of the first magnet upon application of a voltage to the first coil. 1. An ophthalmic surgical probe for treating an eye of a patient , the probe comprising:a body arranged for grasping by a surgeon; a sleeve member;', 'an inner member disposed within the sleeve member, the inner member being movable axially with respect to the sleeve member; and, 'a cutting element extending distally from the body including a first coil secured within the body;', 'a first magnet operatively secured to the inner member; and', 'a second magnet that is not secured to the inner member, the second magnet being positioned and arranged to move in an opposite direction of the first magnet upon application of a voltage to the first coil., 'an actuating element configured to reciprocally move the inner member relative to the sleeve member, the actuating element comprising2. The probe of claim 1 , wherein the second magnet is unattached to the body.3. The probe of claim 1 , wherein the second magnet is attached to the body with a flex member.4. The probe of claim 1 , wherein the first magnet is a cylinder magnet secured to a proximal end of the inner member.5. The probe of claim 1 , wherein the second magnet is a ring magnet that concentrically ...

Подробнее
Номер записи: 38
12-05-2016 дата публикации

DUAL MODE VITRECTOMY SURGICAL SYSTEM

Номер: US20160128870A1
Автор: McDonell Brian William
Принадлежит:

An ophthalmic surgical probe for treating an eye of a patient includes a body, a cutting element extending distally from the body (the cutting element having a sleeve member with a port at an end), an inner member disposed within the sleeve member (the inner member being movable axially with respect to the sleeve member to open and close the port), and an actuating element secured to the inner member (the actuating member configured for operation in both a resonant mode and a non-resonant mode). 1. An ophthalmic surgical system for treating an eye of a patient , the system comprising:a body; a sleeve member comprising a port at an end;', 'an inner member disposed within the sleeve member, the inner member being movable axially with respect to the sleeve member; and, 'a cutting element extending distally from the body includingan actuating element secured to the inner member, the actuating element configured for operation in both a resonant mode and a non-resonant mode;wherein operation in the resonant mode causes reciprocal movement of the inner member under application of a constant supply of pressurized fluid and operation in the non-resonant mode causes movement of the inner member in accordance with a pulse of pressurized fluid.2. The system of claim 1 , wherein the actuating element comprises:a chamber;a spring loaded diaphragm movable within the chamber and secured to the inner member; anda flow director comprising a switch valve in fluid connection with the chamber, the switch valve being in connection with the inner member such that movement of the inner member switches the valve in a delayed manner.3. The system of claim 2 , wherein operation in the resonant mode causes movement of the switch valve such that fluid is reciprocally pumped and vented from the chamber.4. The system of claim 2 , wherein operation in the non-resonant mode causes movement of the inner member when a controlled pulse of fluid is passed through the switch valve such that a single cut ...

Подробнее
Номер записи: 39
11-05-2017 дата публикации

VITRECTOR HAVING A ROTATING CUTTER HEAD

Номер: US20170128265A1
Автор: Czaja Stefan, Moll Friederike, Rossmann Lisa
Принадлежит:

A device for treating eyes, the device having a lance-like housing which extends along a longitudinal direction (L) and can be inserted into an area of the eye to be treated. The device further includes at least one cutter element, which is arranged at least partially inside the housing and is movable relative to the housing. The housing has an opening through which the cutter element can contact the area of the eye to be treated. The apparatus preferably includes a drive for generating the movement of the cutter element. The cutter element is configured to be rotatable or pivotable with respect to a predefined axis extending in or oblique to the longitudinal direction (L). 1. An apparatus for treating eyes , the apparatus comprising:a lance-like housing extending along a longitudinal direction (L) and configured to be inserted into an area of the eye to be treated;at least one cutter element arranged at least partially in said housing and configured to be movable relative to said housing;said housing defining an opening; and,said cutter element being configured to contact the area of the eye to be treated via said opening and to be at least one of rotatable and pivotable with respect to a predefined axis extending in or oblique to said longitudinal direction.2. The apparatus of further comprising:a carrier configured to be rotatable about said predefined axis; and,said cutter element being arranged on said carrier.3. The apparatus of further comprising a suction unit configured for at least partial aspiration of material cut by said cutter element.4. The apparatus of claim 2 , wherein said carrier has a tubular shape.5. The apparatus of further comprising a drive configured to drive said cutter element at rotational speeds of at least 2000 revolutions per minute.6. The apparatus of further comprising a drive configured to drive at least one of said cutter element and said carrier at rotational speeds of at least 2000 revolutions per minute.7. The apparatus of claim ...

Подробнее
Номер записи: 40
03-06-2021 дата публикации

ELECTRONIC GUILLOTINE VITRECTOMY CUTTER

Номер: US20210161709A1
Автор: Hickey Lauren M., Strayer Scott G.
Принадлежит:

A vitrectomy apparatus is provided, including a disposable cutter that incorporates a linear voice coil motor to generate consistent and rapid guillotine action without the use of a rotary motor or traditional linear motor. The apparatus includes voice coil actuator to provide for a forward and backward reciprocating motion cutting blade. 123.-. (canceled)24. A method of controlling a guillotine cutting device , the device comprising:providing a bobbin wound with one or more pieces of magnetic wiring and affixed to an internal cutting shaft, the one or more pieces of magnetic wiring capable of generating a magnetic field;providing at least one magnet in communication with the bobbin; andgenerating at least one magnetic field from a provided voltage, wherein the bobbin moves forward and backward based on a difference in polarity of the magnet in response to the magnetic field.25. The method of claim 24 , wherein the at least one magnet is permanently affixed to the internal cutting shaft.26. The method of claim 24 , wherein the at least one magnet is affixed to an internal center of a shell of the guillotine cutting device.27. The method of claim 24 , wherein the provided voltage is pulsed.28. The method of claim 24 , wherein the provided voltage is between 1 and 24 volts.29. The method of claim 24 , wherein the provided voltage is between 1 and 5 volts.30. The method of claim 24 , wherein the provided voltage controls the speed of the bobbin movement.31. The method of claim 25 , further comprising providing at least one heat sink.32. The method of claim 24 , wherein the bobbin motion is bounded by one or more dampening materials.33. The method of claim 32 , wherein the one or more dampening materials comprise a spring.34. The method of claim 32 , wherein the one ore more dampening materials is fixed to the magnet.35. The method of claim 32 , wherein the one or more dampening materials comprise one or more of silicone claim 32 , rubber claim 32 , foam claim 32 , ...

Подробнее
Номер записи: 41
03-06-2021 дата публикации

Ophthalmic surgical instruments and snares thereof

Номер: US20210161711A1
Автор: Christopher Dean SMITH, Maxime BLAIN, Richard Mackool
Принадлежит: Individual

An ophthalmic surgical instrument includes an elongated shaft and a snare configured to transition between an expanded configuration, in which the snare is sized to encircle lenticular tissue, and a contracted configuration. The snare has a section configured to cooperate with a bottom surface of the elongated shaft to sever the lenticular tissue therebetween upon the snare transitioning toward the contracted configuration.

Подробнее
Номер записи: 42
19-05-2016 дата публикации

DOUBLE-ACTING VITREOUS PROBE WITH CONTOURED PORT

Номер: US20160135991A1
Автор: Farley Mark, McDonell Brian William
Принадлежит:

A vitrectomy probe includes a hand-graspable body and an outer tube extending from the hand-graspable body. The outer tube includes a closed distal end and a first port sized to receive tissue. The vitrectomy probe also includes an inner tube within the outer tube with a second port that is selectively alignable with a portion of the first port to allow fluid flow and uniquely sized to increase fluid flow. The inner tube includes a distal tip with a cutting edge on each of the distal and proximal sides of the tip. The distal tip has a smaller diameter than that of the inner tube at a proximal side of the second port. The proximal side of the second port includes a guiding surface that slidably bears on an inner surface of the outer tube to prevent the distal tip from excessively protruding from the first port of the outer tube. 1. A vitrectomy probe , comprising:a hand-graspable body;an outer tube extending from the hand-graspable body and sized to penetrate an eye of a patient during an ocular surgery, the outer tube having a closed distal end and a first port sized to receive vitreous of an eye; andan inner tube disposed at least partially within the outer tube, the inner tube comprising a second port selectively alignable with a portion of the first port in a manner that allows fluid to flow through the first port and into the second port, the second port having a proximal edge and a distal edge, the inner tube also comprising a distal tip forming a first cutting edge facing in a distal direction, the distal edge of the second port forming a second cutting edge facing in a proximal direction, the inner tube having a first diameter at the proximal end of the second port and having a second diameter at the distal tip, the first diameter being greater than the second diameter.2. The vitrectomy probe of claim 1 , wherein the distal tip comprises a crimp imparting an ovalized tubular cross-section profile to the distal tip.3. The vitrectomy probe of claim 2 , wherein ...

Подробнее
Номер записи: 43
17-05-2018 дата публикации

Medical instrument with an integrated optical fiber

Номер: US20180132963A1
Автор: Alireza Mirsepassi, Barry L. WHEATLEY, Brian William Mcdonell, Chenguang Diao, Kambiz PARTO, Mark Harrison Farley, Michael J. Papac, Ronald T. Smith
Принадлежит: NOVARTIS AG

Provided herein is an illuminated microsurgical instrument system and an illuminated microsurgical instrument. In one implementation, the system includes a microsurgical instrument having a distally projecting tubular member arranged to perform a medical procedure at an interventional site. The tubular member has a distal tip and an outer surface, the outer surface having a flat surface formed therein. The instrument includes a sheath member surrounding a portion of the tubular member and extending toward the distal tip of the tubular member and an optical fiber extending along a length of the flat surface between the tubular member and the sheath member. The instrument may further include a slack chamber, collar structure, and fiber guard member to support and guide the optical fiber to the distal tip.

Подробнее
Номер записи: 44
09-05-2019 дата публикации

DEVICES AND METHODS FOR OCULAR SURGERY

Номер: US20190133825A1
Автор: Chamness Scott, Clauson Luke W., Reese Brendan, Schaller Michael P.
Принадлежит:

Devices, systems, and methods for performing an ophthalmic procedure in an eye are disclosed. The devices include a hand-held portion and a distal, elongate member coupled to the hand-held portion having a lumen operatively coupled to a vacuum source. A drive mechanism operatively coupled to the elongate member is configured to oscillate the elongate member. When in use, the device is configured to aspirate ocular material from the eye through the lumen. The drive mechanism retracts the elongate member with a retraction speed profile and advances the elongate member with an extension speed profile. The retraction speed profile is different from the extension speed profile. 1. A device for extracting lens material from an eye , the device comprising:a hand-held portion comprising a proximal, reusable portion releasably coupleable to a distal, disposable portion; a motor; and', 'a rotatable coupler for releasably operatively coupling the motor to the distal, disposable portion,', 'said proximal, reusable portion configured to remain outside of the eye;, 'said proximal, reusable portion comprising an elongate member comprising a distal cutting tip and an inner lumen having an open distal end, said elongate member sized and configured to extend through an anterior chamber of the eye and to a capsular bag of the eye, and further wherein in use, the device is configured to aspirate the lens material from the capsular bag of the eye into the inner lumen;', 'an irrigation lumen coupleable to a source of irrigation fluid;', 'a plurality of pistons, each of said plurality of pistons housed within a cylinder, each of said cylinders operatively coupled to said inner lumen; and', 'a rotational cam assembly capable of being rotated by the motor via said rotatable coupler, wherein rotation of said rotational cam assembly causes said plurality of pistons to generate pulses of discontinuous negative pressure within the inner lumen., 'said distal, disposable portion comprising2. The ...

Подробнее
Номер записи: 45
30-04-2020 дата публикации

Device and method for creating a channel in soft tissue

Номер: US20200129331A1
Автор: Gilad Lavi, Nir ISRAELI, Vadim Shmukler, Yoseph Glovinsky
Принадлежит: Sanoculis Ltd, Tel Hashomer Medical Research Infrastructure and Services Ltd

Medical devices and methods for removing a predetermined shape of soft tissue from a target tissue layer, thereby leaving a matching channel with predetermined geometry and orientation in the target tissue layer, are described. The medical device comprises coaxial outer and inner elongated members extending along axis X; said outer member comprises an open distal side and a first distal part configured for sticking to said target tissue layer during forward axial movement; said inner member comprises a second distal part configured to rotate and project distally through said open distal side to cut said predetermined shape of the soft tissue from the target tissue layer and create said channel formed as a hole across the target tissue layer.

Подробнее
Номер записи: 46
26-05-2016 дата публикации

TRACTION-LIMITING VITRECETOMY PROBE

Номер: US20160143780A1
Автор: Gunn Nicholas Max
Принадлежит:

Apparatuses, systems, and methods are described for selectively generating an aspiration flow within a surgical instrument. Particularly, the disclosure describes example vitrectomy probes operable to selectively generate an aspiration flow in relation to operation of the cutter of the vitrectomy probe. 1. A surgical instrument comprising:a body; an outer cutting member comprising a port;', an inner cutting member; and', 'a valve selectable between an open configuration and a closed configuration; and, 'an inner cutting assembly slideable within the outer cutting member, the inner cutting assembly comprising], 'a cutter coupled to the body, the cutter comprisinga motor operable to reciprocate the inner cutting assembly between an extended position and a retracted position.2. The surgical instrument of claim 1 , wherein the valve is configured to close when the inner cutting assembly is in the extended position claim 1 , and the valve is configured to open when the interior cutting assembly is in the retraced position.3. The surgical instrument of wherein the body comprises a chamber and wherein the motor is at least partially disposed in the chamber.4. The surgical instrument of claim 3 , wherein the motor comprises a diaphragm claim 3 , wherein the diaphragm is displaced into the retracted position by a first pneumatic pressure.5. The surgical instrument of claim 4 , wherein the valve is configured to close in response to the first pneumatic pressure.6. The surgical instrument of claim 4 , wherein the valve is configured to open upon removal of the first pneumatic pressure.7. The surgical instrument of claim 1 , wherein the valve comprises:a tubular member defining an opening; anda resilient member disposed on the tubular member and overlaying the opening.8. A method of operating a surgical instrument comprising:forming an occlusion within a portion of an inner cutting member;retracting the inner cutting member within an outer cutting member in a first direction; ...

Подробнее
Номер записи: 47
11-06-2015 дата публикации

Dual Electromagnetic Coil Vitrectomy Probe

Номер: US20150157503A1
Автор: Chon James Y.
Принадлежит:

An ophthalmic surgical system for insertion into an eye of a patient includes a body and a cutting element having a sleeve piece secured to and extending distally from the body, the sleeve piece comprising a port at an end and an inner piece disposed within the sleeve piece, the inner piece being moveable axially with respect to the sleeve piece. The system further includes a first electromagnetic coil disposed within the body and configured to generate a first magnetic field, a second electromagnetic coil disposed within the body and configured to generate a second magnetic field, a rod piece connected to the inner piece, a first magnetic ring, and a second magnetic ring, the first and second magnetic rings being fixedly secured to the rod piece such that magnetic rings are axially moveable between the first and second electromagnetic coils to open and close the port. 1. An ophthalmic surgical system for treating an eye of a patient , the system comprising:a body; a sleeve piece comprising a port at an end; and', 'an inner piece disposed within the sleeve piece, the inner piece being moveable axially with respect to the sleeve piece to open and close the port;, 'a cutting element extending distally from the body includinga first electromagnetic coil disposed within the body and configured to generate a first magnetic field;a second electromagnetic coil disposed within the body and configured to generate a second magnetic field;a first magnetic ring moveable by the first magnetic field when the first electromagnetic coil generates the first magnetic field; anda second magnetic ring moveable by the second magnetic field when the second electromagnetic coil generates the second magnetic field, the first and second magnetic rings being fixedly secured relative to the inner piece such that movement of the first and second magnetic rings moves the inner piece and opens and closes the port.2. The system of claim 1 , wherein the first and second magnetic rings are disposed ...

Подробнее
Номер записи: 48
22-09-2022 дата публикации

DEVICE AND METHOD FOR CREATING A CHANNEL IN SOFT TISSUE

Номер: US20220296416A1
Автор: GLOVINSKY Yoseph, ISRAELI Nir, Lavi Gilad, Shmukler Vadim
Принадлежит:

Medical devices and methods for removing a predetermined portion of soft tissue from a target tissue layer, thereby creating a channel between two side walls of the target tissue layer, are described. The medical device is a cutting tool comprising: an elongated round body extending along a longitudinal axis and having a uniform outer cross-section at a proximal side thereof; a cutting portion at a distal side of the elongated body, comprising at a distal end thereof a cutting edge of a first cross-section being smaller than said outer cross-section, and a distally and continuously decreasing outer cross-section; and a chamber extending along the longitudinal axis inside the cutting tool from said cutting portion, the chamber having dimensions enabling storing of the removed soft tissue portion inside the chamber thereby providing a validation to the channel creation. 1. A cutting tool for removing a portion of soft tissue from a target tissue layer in an eye while being rotated and progressed , thereby creating a channel between two side walls of the target tissue layer enabling fluid to pass through the channel , the cutting tool comprising:an elongated round body extending along a longitudinal axis and having a uniform outer cross-section at a proximal side thereof,a cutting portion at a distal side of the elongated body, comprising at a distal end thereof a cutting edge of a first cross-section being smaller than said outer cross-section, and a distally and continuously decreasing outer cross-section, anda chamber extending along the longitudinal axis inside the cutting tool from said cutting portion, the chamber having dimensions enabling storing of the removed soft tissue portion inside the chamber thereby providing a validation to the channel creation.2. The cutting tool according to claim 1 , wherein said chamber has a chamber cross-section smaller than said first cross-section at a distal end of the chamber and which increases continuously towards a ...

Подробнее
Номер записи: 49
23-05-2019 дата публикации

DEVICES AND METHODS FOR OCULAR SURGERY

Номер: US20190151149A1
Автор: Clauson Luke, Schaller Michael
Принадлежит:

Devices, systems, and methods for performing an ophthalmic procedure in an eye are disclosed. The devices include a hand-held portion and a distal, elongate member coupled to the hand-held portion having a lumen operatively coupled to a vacuum source. A drive mechanism operatively coupled to the elongate member is configured to oscillate the elongate member. When in use, the device is configured to aspirate ocular material from the eye through the lumen. The drive mechanism retracts the elongate member with a retraction speed profile and advances the elongate member with an extension speed profile. The retraction speed profile is different from the extension speed profile. 1. A device for performing an ophthalmic procedure in an eye , the device comprising:a proximal portion for remaining outside the eye;a distal, elongate member coupled to the proximal portion, the distal, elongate member comprising an open distal end and a lumen operatively coupled to a vacuum source; anda drive mechanism operatively coupled to the elongate member and configured to oscillate the elongate member,wherein a distal portion of the distal, elongate member is sized and configured to extend through an anterior chamber of the eye and to a capsular bag of the eye, and further wherein, in use, the device is configured to aspirate lens material from the capsular bag of the eye through the open distal end and into the lumen, andwherein the drive mechanism retracts the elongate member in a proximal direction with a retraction speed profile and advances the elongate member in a distal direction with an extension speed profile, andfurther wherein the retraction speed profile comprises a maximum retraction speed of the elongate member, and the extension speed profile comprises a maximum extension speed of the elongate member that is greater than the maximum retraction speed.2. The device of claim 1 , wherein the proximal portion comprises an actuator for activating one or both of the vacuum source ...

Подробнее
Номер записи: 50
28-08-2014 дата публикации

Vitrectomy probe with adjustable cutter port size

Номер: US20140243735A1
Автор: Jack Robert Auld, John Christopher Huculak, John R. Underwood
Принадлежит: Alcon Research LLC

Vitrectomy probes and system related thereto are disclosed herein. The disclosure describes various example vitrectomy probes having an adjustable cutting port size. Various example features are described for adjusting the size of the cutting port. Further, the disclosure provides examples for adjusting the size of the cutter port while the vitrectomy probe is in operation.

Подробнее
Номер записи: 51
16-06-2016 дата публикации

SURGICAL INSTRUMENT

Номер: US20160166433A1
Автор: Czaja Stefan
Принадлежит:

A surgical instrument () is made available, in particular a microsurgical instrument, with a rod-shaped or sleeve-shaped portion () that comprises a proximal end () and a distal end (). The rod-shaped or sleeve-shaped portion () is made of a transparent ceramic and has, at its proximal end (), an attachment piece () for an optical fiber output () which allows light emerging from the optical fiber output () to be introduced into the transparent ceramic. The transparent ceramic of the rod-shaped or sleeve-shaped portion () is provided with a non-transparent coating (), except in a light outlet area (). 1. A surgical instrument in particular a microsurgical instrument , with a rod-shaped or sleeve-shaped portion that comprises a proximal end and a distal end , wherein the rod-shaped or sleeve-shaped portion is made of a transparent ceramic and has , at its proximal end an attachment piece for an optical fiber output wherein the attachment piece allows light emerging from the optical fiber output to be introduced into the transparent ceramic , and the transparent ceramic of the rod-shaped or sleeve-shaped portion is provided with a non-transparent coating except in a light outlet area.2. The surgical instrument as claimed in claim 1 , wherein the transparent ceramic is a polycrystalline ceramic.3. The surgical instrument as claimed in claim 2 , wherein the transparent ceramic is aluminum oxynitride or aluminum oxide.4. The surgical instrument as claimed in claim 1 , wherein the light outlet area is arranged closer to the distal end of the rod-shaped or sleeve-shaped portion than to the proximal end of the rod-shaped or sleeve-shaped portion.5. The surgical instrument as claimed in claim 4 , wherein the light outlet area is arranged at the distal end of the rod-shaped or sleeve-shaped portion.6. The surgical instrument as claimed in claim 1 , wherein the light outlet area has a shape that allows the light to emerge in a desired light outlet direction and/or with a ...

Подробнее
Номер записи: 52
04-09-2014 дата публикации

Phacoemulsification Needle

Номер: US20140249538A1
Автор: Akahoshi Takayuki
Принадлежит: ART, LTD.

A phacoemulsification needle having a hollow passageway terminates in a straight needle tip formed off-axis from the passageway, allowing the needle tip to move eccentrically when the needle is subjected to torsional or longitudinal vibratory motion. The tip may be flared or may be coextensive with the needle body. The aspiration passageway formed through the needle body may be formed off-axis from the needle body axis. The tip may also be angled with respect to the needle body. The inner and outer surfaces of the needle tip are roughened, as by sandblasting, to enhance the cutting effect of the tip when used with a non-longitudinal handpiece. The lip of each needle tip is polished to a high degree of smoothness and the edges of the tip are rounded to lessen the incidence of snags or cuts. 132-. (canceled)33. A phacoemulsification needle for use with a phacoemulsification handpiece , said needle comprising:an elongate needle body having a proximal end, a distal end, and an outer surface therebetween,said needle body defining a needle body axis,said needle body having an aspiration passage extending through said needle body, said aspiration passage defining an aspiration passage axis, said aspiration passage axis being parallel to and offset from said needle body axis such that said needle distal end moves eccentrically when said needle body is subjected to a torsional oscillation by a phacoemulsification handpiece.34. The needle as recited in wherein said aspiration passage has a cross-sectional shape that is different from a cross-sectional shape of said needle body claim 33 , with respect to a plane normal to said body axis.35. The needle as recited in wherein said needle body cross-sectional shape is triangular.36. The needle as recited in wherein said needle body cross-sectional shape is square.37. The needle as recited in wherein said needle body cross-sectional shape is hexagonal claim 34 ,38. The needle as recited in wherein said needle body cross-sectional ...

Подробнее
Номер записи: 53
01-07-2021 дата публикации

IMPLANTABLE BIOLOGIC STENT AND SYSTEM FOR BIOLOGIC MATERIAL SHAPING, PREPARATION, AND INTRAOCULAR STENTING FOR INCREASED AQUEOUS OUTFLOW AND LOWERING OF INTRAOCULAR PRESSURE

Номер: US20210196516A1
Автор: Ianchulev Tsontcho
Принадлежит:

A system for preparation of an implant and ab interno insertion of the implant into an eye including a handle having one or more actuators and an elongated shaft having an outer sheath and an elongate member positioned within a lumen of the tubular outer sheath. The system includes a recess sized for holding a patch of material fixed relative to the handle and a cutting member movable relative to the handle and to the recess. The cutting member cuts the patch of material into an implant as the cutting member moves towards a cutting configuration. The implant, once cut, is axially aligned with the lumen of the tubular outer sheath. The inner elongate member is movable relative to the tubular outer sheath to advance the implant into a deployment position in the lumen of the tubular outer sheath for delivery into the eye. Related devices and methods are provided. 130.-. (canceled)31. A method of preparing an implant for implantation into , and of inserting said implant into , an eye of a patient , the method comprising:cutting a material located within a portion of a cartridge with at least one cutting member to form said implant from said material;coupling said cartridge to a device to form a delivery instrument, said delivery instrument comprising a distal portion sized and shaped for insertion into an anterior chamber of said eye, wherein said distal portion comprises a lumen within an elongate tubular member;advancing said implant a distance through the lumen into a primed location within the lumen;inserting said distal portion of said delivery instrument into said anterior chamber of said eye;positioning said distal portion adjacent eye tissue; anddeploying said implant from said delivery instrument through at least a portion of said lumen such that said implant engages said eye tissue.32. The method of claim 31 , wherein said portion of the cartridge comprises a recess claim 31 , and wherein the method further comprises inserting said material into said recess of ...

Подробнее
Номер записи: 54
01-07-2021 дата публикации

DIGITALLY RECONSTRUCTING LASER CUTTING PATTERNS IN OPHTHALMIC SURGICAL LASER SYSTEM

Номер: US20210196518A1
Автор: Dai Guangming, Fu Hong, Gray Paul, Malek Tabrizi Alireza
Принадлежит:

An ophthalmic surgical laser system includes a laser beam delivery system having multiple moving components for scanning a laser focal spot in a target eye tissue, where the motors that actuate some of the moving components are equipped with respective digital encoders that measure actual motor positions. A controller controls the laser beam delivery system to perform a treatment scan, while recording the actual motor positions from the encoders. Using the actual motor positions and a calibration relationship between actual motor positions and delivered laser focal spot positions in a target tissue, a laser cutting pattern is digitally reconstructed, which represents the incisions actually achieved by the treatment scan. The reconstructed laser cutting pattern may be visually inspected and further analyzed, e.g. to compare it to the intended laser cutting pattern used to execute the treatment scan, to calculate the achieved refractive correction, or to simulate tissue resetting. 1. An ophthalmic surgical laser system comprising:a laser source configured to generate a pulsed laser beam;a laser beam delivery system configured to deliver a laser focal spot of the laser beam to a target tissue of a patient's eye, the laser beam delivery system including a plurality of optical elements each configured to interact with the laser beam and a plurality of motors each configured to move at least one of the plurality of optical elements, each of the plurality of motors including an associated encoder configured to measure a position or movement of the motor and to output data representing the measured position or movement; and control the laser source and the laser beam delivery system including the plurality of motors based on predefined scan patterns, wherein the laser beam delivery system scans the laser focal spot in the target tissue;', 'while controlling the plurality of motors, receive output data from the plurality of encoders associated with the plurality of motors, ...

Подробнее
Номер записи: 55
02-07-2015 дата публикации

DEVICE FOR VITRECTOMY SURGICAL OPERATIONS

Номер: US20150182379A1
Автор: Ciampi Gionata, Fantoni Gualtiero, Rizzo Stanislao
Принадлежит:

A vitrectomy probe for removing vitreous material from an eyeball, having a longitudinal axis and an outer tube with a closed end and a lateral surface, at least one inlet port located proximate to the closed end and configured to allow the vitreous material to enter into the outer tube; an inner tube arranged in the outer tube to relatively move with respect to the outer tube, the inner tube having an opening with a cutting profile through which the vitreous material can be cut and can enter the inner tube, a drive unit configured for causing the outer tube and the inner tube to move relatively with respect to each other, in such a way that the cutting profile cuts the vitreous material entering the inlet port. 1. A vitrectomy probe for removing vitreous material from an eyeball , said vitrectomy probe having a longitudinal axis and comprising:an outer tube with a closed end and a lateral surface, at least one inlet port being provided through said lateral surface, said inlet port located proximate to said closed end and configured to allow said vitreous material to enter into said outer tube;an inner tube arranged in said outer tube to relatively move with respect to said outer tube, said inner tube having an opening with a cutting profile, through which said vitreous material can be cut and can enter said inner tube, said inner tube configured to be connected to a suction unit in order to remove by suction any vitreous material entered into said inner tube;a drive unit configured for causing said outer tube and said inner tube to move relatively with respect to each other, in such a way that said cutting profile cuts said vitreous material entering said inlet port;characterized in that said cutting profile comprises a cutting portion that extends along a direction that is inclined according to a predetermined inclination angle with respect to said longitudinal axis, such that said inclined cutting portion carries out a progressive removal of said vitreous during ...

Подробнее
Номер записи: 56
18-09-2014 дата публикации

APPARATUS AND METHOD FOR PERFORMING PHACOEMULSIFICATION

Номер: US20140276365A1
Автор: KOPLIN Richard S.
Принадлежит:

An apparatus provides mechanical energy to vibrate a tip. The tip preferably formed of multiple prongs positioned approximately circumferentially (either symmetrically or asymmetrically) around an orifice of a needle. The tip is designed to emulsify a cataractous lens and to collect the resulting detritus through an aspiration aperture. An irrigating sleeve whose apertures/ports are protected from relative occlusion by untoward excursions of the phaco needle by a system of elevated stabilizing devices rising from within the inner wall of the sleeve (or from the outer wall of the phaco needle); this results in a plume or river of irrigating fluid exiting the sleeve that mitigates untoward dispersion of infusion fluid and material caught in its path including lens detritus, iris and other anatomical structures. This also provides for a more efficient process at the needle tip and therefore enhances aspirations of lens detritus in a more efficient and salutary manner as it flows to the aspiration aperture, said plume extend around the prongs. The prongs can be driven at either subsonic frequencies or ultrasonic frequencies. A stabilizer is provided to prevent the needle from interfering with the flow of the irrigating fluid during operation. 1. An apparatus for performing eye surgery comprising:a vibration mechanism;a handle connected to a source of irrigation fluid and including a needle having an outside surface and a distal tip and being coupled to said vibration mechanism and adapted to be vibrated by said vibration mechanism, said handle further including an irrigation sleeve disposed around said needle and being configured for placement in the eye through a corneal or scleral wound; said sleeve having a a port near said distal tip and receiving said irrigation fluid and conducting said irrigation fluid along said outside surface to said port; anda stabilizer arranged within the sleeve to stabilize said needle and prevent said needle from deflection toward said ...

Подробнее
Номер записи: 57
20-06-2019 дата публикации

Devices and methods for ocular surgery

Номер: US20190183681A1
Автор: Adam Larson, Luke W. Clauson, Maria Tsontcheva GUGUCHKOVA, Matthew Newell, Michael P. Schaller, Peter Bentley
Принадлежит: Carl Zeiss Meditec Cataract Technology Inc, Iantech Inc

A surgical device for cutting a lens within a capsular bag of an eye. Related methods, systems, and devices are also provided.

Подробнее
Номер записи: 58
11-06-2020 дата публикации

METHODS OF SOLENOID VALVE CONTROL OPTIMIZATION

Номер: US20200179169A1
Автор: Agahi Daryush, Zhou Jiansheng
Принадлежит:

Systems and methods for optimizing the application of pulse width modulation (PWM) in a voltage signal for delivering a current in a valve used to alternatively deliver pressurized gas to and vent from chambers in a vitrectomy probe used to drive a cutter. 1. A system for solenoid valve control optimization for a vitrectomy probe comprising:a vitrectomy probe with a first chamber and a second chamber on respective sides of a pneumatically driven diaphragm for reciprocating a probe cutter;a pressurized gas source;a valve coupled with the pressurized gas source, the valve having a solenoid which, when supplied with a current, moves a solenoid plunger to alternatively deliver and vent pressurized gas through a first outlet line and a second outlet line which respectively deliver and vent pressurized gas to and from the first chamber and to and from the second chamber of the vitrectomy probe;a power supply coupled with the solenoid of the valve for supplying a voltage to drive a current in the solenoid;a current sensor coupled to the solenoid and configured to monitor current in the solenoid and transmit a current signal; receive the current signal from the current sensor;', 'identify when a plunger movement in the solenoid creates a back electromotive force (back EMF) that changes the current in the solenoid in a predetermined degree; and', 'cause the power supply, after detecting the back EMF, to enter a pulse width modulation (PWM) mode of operation to cause a continued movement of the solenoid plunger and/or hold an end position of the solenoid plunger until power to the solenoid is turned off at a predetermined timing., 'a system controller coupled with the power supply and the current sensor, the system controller including a processor and a non-transitory computer readable medium containing instructions which, when executed by the processor, cause the system controller to2. The system of claim 1 , wherein the current sensor monitors the current in the solenoid at ...

Подробнее
Номер записи: 59
12-07-2018 дата публикации

SYSTEMS AND METHODS FOR PRESSURE-DRIVEN TOOL ACTUATION

Номер: US20180193192A1
Автор: Charles Steven T.
Принадлежит:

The present disclosure describes systems and methods for pressure-driven micro-surgical tool actuation. The systems and methods may encompass the use of a remote handle held by a first hand of a user as well as a surgical tool located in the eye of a patient. A primary actuator may be included in remote handle and operable to be actuated by a mechanical force exerted on the handle. Actuating the primary actuator pressurizes a fluid within a length of tubing. The pressurized fluid may be transmitted to a dynamic tool held by a second hand of the user, where the pressurized fluid may be used to actuate a subordinate actuator. Actuation of the subordinate actuator may actuate a dynamic component of the dynamic tool. 1. A system for pressure-driven tool actuation comprising: a first end operable to be inserted in an eye; and', 'a primary actuator operable to be actuated by a mechanical force exerted on the remote handle;, 'a remote handle operable to be held by a first hand of a user and comprisinga length of tubing comprising a fluid and connected to the remote handle such that the primary actuator is operable to apply pressure to the fluid in the length of tubing when the primary actuator is actuated, the fluid in the length of tubing operable to transmit the pressure through the fluid; and a dynamic component operable to be inserted in the eye; and', 'a subordinate actuator connected to the length of tubing such that pressure transmitted through the fluid actuates the subordinate actuator, the subordinate actuator operable to actuate the dynamic component in the eye., 'a dynamic tool operable to be held by a second hand of the user and comprising2. The system of claim 1 , wherein the primary actuator comprises a plurality of actuation levers situated around a circumference of the remote handle to define a semi-circular bearing surface claim 1 , and wherein the mechanical force exerted on the handle is a radial force about the circumference that acts upon at least a ...

Подробнее
Номер записи: 60
27-06-2019 дата публикации

EYE SURGICAL CUTTING TOOL

Номер: US20190192343A1
Автор: Hartstra Andre
Принадлежит:

An eye surgical cutting tool includes a tubular outer part with a closed distal end and an opening in the tube of the outer part near the closed end. The opening is bounded by an edge profile formed in the tube, which has a distal cutting edge and an opposite proximal cutting edge. A tubular inner part has an open distal end and is arranged in the tubular outer part so as to be movable in an axial direction. A suction is configured to extend ocular tissue through the opening of the outer part into the interior of the outer part and to convey severed tissue via the interior of the inner part to a proximal end of the inner part. 1. An eye surgical cutting tool , comprising:a tubular outer part with a closed distal end and an opening in the tube of the outer part, near the closed end, the opening being bounded by an edge profile formed in the tube which has a distal cutting edge and an opposite proximal cutting edge,a tubular inner part which has an open distal end and is arranged in the tubular outer part so as to be movable in an axial direction, anda suction that is configured to, during use of the cutting tool, extend ocular tissue through the opening of the outer part into the interior of the outer part and to convey severed tissue via the interior of the inner part to a proximal end of the inner part,wherein the tube of the inner part also has an opening, near the open end and bounded by an edge profile formed in the tube with a distal cutting edge and an opposite proximal edge, such that the opening of the outer part and the opening of the inner part are mutually aligned in a circumferential direction around the outer part and in an aligned axial position of the inner part with respect to the outer part, andwherein the open distal end of the inner part forms a distal cutting edge with a cutting face and wherein the distal cutting edge of the edge profile formed in the inner part forms a proximal cutting face which is oblique relative to a body axis of the ...

Подробнее
Номер записи: 61
19-07-2018 дата публикации

OPTIMIZED PNEUMATIC DRIVE LINES

Номер: US20180200110A1
Автор: Finodeyev Filip, McDonell Brian William
Принадлежит:

In one exemplary aspect, the present disclosure is directed to a system. The system includes a pneumatic surgical instrument and a surgical console operable to provide compressed gas to the pneumatic surgical instrument. Additionally, the system includes a pneumatic drive line coupling the pneumatic surgical instrument to the surgical console. The pneumatic drive line has an internal bore configured to deliver the compressed gas to the pneumatic surgical instrument. The internal bore has a non-uniform cross-section along a length of the pneumatic drive line. 120-. (canceled)21. An ophthalmic surgical instrument , the instrument comprising:a pneumatically-powered probe cutter; and [ a proximal end coupled to a port of the surgical console,', 'a distal end opposite the proximal end, and', 'a first internal bore for providing the pneumatic pulses to the pneumatically-powered probe cutter, the first internal bore having a first cross-sectional area, and, 'a first segment, the first segment having'}, a proximal end in pneumatic communication with the distal end of the first segment,', 'a distal end opposite the proximal end of the second segment coupled to the pneumatically-powered probe cutter, and', 'a second internal bore for providing the pneumatic pulses to the pneumatically-powered probe cutter, the second internal bore having a second cross-sectional area different than the first cross-sectional area., 'a second segment, the second segment having'}], 'a pneumatic drive line assembly comprising a multi-segment drive line providing pneumatic pulses from a pneumatic pulse source of a surgical console to the pneumatically-powered probe cutter, the multi-segment drive line including'}22. The ophthalmic surgical instrument of claim 21 , wherein the second cross-sectional area is smaller than the first cross-sectional area.23. The ophthalmic surgical instrument of claim 21 , wherein the first segment has a first length and the second segment has a second length.24. The ...

Подробнее
Номер записи: 62
02-10-2014 дата публикации

DISPOSABLE VITRECTOMY HANDPIECE

Номер: US20140296900A1
Автор: Barnes Aaron, DeBoer Charles, McCormick Matthew
Принадлежит: Doheny Eye Institute

Electric vitrectomy handpieces are provided. The handpiece includes a motor, a clutch mechanism, an oscillating drive mechanism, a cutting tip and a handle. The motor is attached to the clutch, and the clutch is attached to the oscillating drive mechanism. When the motor is operational, the clutch expands to engage the oscillating drive mechanism and the oscillating drive mechanism converts the rotational motion of the clutch to the reciprocating motion of the cutting tip. When the motor is at rest, the clutch retracts to allow aspiration. 1. A vitreous cutter comprising:a motor configured to provide rotary motion;a handle;a cutter tip;an aspiration line; anda clutch mechanism coupled to the motor and the cutter tip, the clutch mechanism configured to expand for engaging the cutter tip when the motor is activated, and retract for aspiration through the aspiration line when the motor is at rest.2. The vitreous cutter according to claim 1 , wherein the clutch mechanism comprises a component including a groove.3. The vitreous cutter according to claim 2 , wherein the groove is a sinusoidal groove.4. The vitreous cutter according to claim 1 , wherein the motor is a disposable motor.5. The vitreous cutter according to claim 1 , wherein the cutter tip is integrated into the handle.6. The vitreous cutter according to claim 1 , wherein the aspiration line is routed through the handle.7. The vitreous cutter according to claim 6 , wherein the aspiration line is routed around the motor.8. The vitreous cutter according to claim 1 , further comprising a means for sensing a speed of the cutter tip.9. The vitreous cutter according to claim 8 , wherein the means for sensing the speed of the cutter tip comprises a sensor and a magnet.10. The vitreous cutter according to claim 1 , further comprising a means for detecting motor failure by monitoring high current draw.11. The vitreous cutter according to claim 1 , further comprising an oscillating drive mechanism configured to convert ...

Подробнее
Номер записи: 63
25-06-2020 дата публикации

DEVICES AND METHODS FOR THE REMOVAL OF LENTICULAR TISSUE

Номер: US20200197222A1
Автор: Clauson Luke W., Guguchkova Maria Tsontcheva
Принадлежит:

An exemplary surgical device includes a shaft with a lumen defined therethrough and an element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen; wherein motion from the stored position to the deployed position causes a first leg of the element to advance distally relative to the distal end of the shaft, and causes a second leg of the element to move proximally relative to the distal end of the shaft. 130.-. (canceled)31. An ophthalmic surgical device comprising:a handle comprising an actuator;a hollow shaft extending distally of the handle and defining a longitudinal axis, the hollow shaft comprising a lumen and an outlet from the lumen; anda sectioning element operably coupled to the handle and extending through the lumen, the sectioning element configured to transition between a collapsed, insertion configuration towards a fully expanded, capture configuration, wherein the sectioning element exits through the outlet during transition toward the fully expanded, capture configuration,wherein, when in the fully expanded, capture configuration, the sectioning element includes a first leg and a second leg in proximity with one another within the outlet forming an approximately closed loop having an open area, wherein the open area comprises a distal portion positioned distal to the outlet and a proximal portion positioned proximal to the outlet that overlaps a lateral side of the hollow shaft, andwherein tensioning the sectioning element with the actuator transitions the sectioning element towards the collapsed, insertion configuration and sections a lens within a capsular bag.32. The device of claim 31 , wherein the sectioning element is a wire having a first end region coupled to the actuator and a second end region fixed relative to the handle claim 31 , the open area formed between the first and second end regions of the wire.33. The device of claim 31 , wherein the actuator ...

Подробнее
Номер записи: 64
26-07-2018 дата публикации

VACUUM CONTROL FOR A VITRECTOMY PROBE

Номер: US20180207032A1
Автор: Charles Steven T., McDonell Brian William
Принадлежит:

Vitrectomy probes and methods related thereto are disclosed herein. A vitrectomy probe may include a hand piece comprising a housing, a venturi, a piloted proportional valve disposed in the housing, and aspiration tubing fluidly coupled to the piloted proportional valve. In some embodiments, the piloted proportional valve and/or venturi may be disposed in the surgical console. The vitrectomy probe may further include a cutting mechanism attached to a distal end of the hand piece, wherein the cutting mechanism may be fluidly coupled to the aspiration tubing. 1. A vitrectomy probe comprising:a hand piece comprising a housing, a piloted proportional valve disposed in the housing, and aspiration tubing fluidly coupled to the piloted proportional valve; anda cutting mechanism attached to a distal end of the hand piece, wherein the cutting mechanism is fluidly coupled to the aspiration tubing.2. The vitrectomy probe of claim 1 , wherein the piloted proportional valve is controlled by an electrical signal or a pressure signal.3. The vitrectomy probe of claim 1 , wherein the piloted proportional valve comprises an inlet coupled to the aspiration tubing for receiving aspirated material from the cutting mechanism and an outlet for discharging the aspirated material claim 1 , the outlet being coupled to a vacuum source.4. The vitrectomy probe of claim 1 , wherein the piloted proportional valve is operable to control flow of aspirated material from the cutting mechanism through the hand piece.5. The vitrectomy probe of claim 1 , wherein the cutting mechanism is an axial mechanical cutter claim 1 , a rotary mechanical cutter claim 1 , an ultrasonic cutter claim 1 , or a laser cutter.6. The vitrectomy probe of claim 1 , wherein the hand piece further comprises a venturi fluidly coupled to the piloted proportional valve and fluidly coupled to the aspiration tubing.7. The vitrectomy probe of claim 6 , wherein the venturi comprises an entry cone claim 6 , an exit cone claim 6 , and ...

Подробнее
Номер записи: 65
02-08-2018 дата публикации

DYNAMIC SUPPORT FOR OPHTHALMIC DEVICE

Номер: US20180214307A1
Автор: Ryan Edwin
Принадлежит:

A small gauge surgical instrument is shown with advantages such as diminished “play” at the tip. A surgical instrument assembly is also shown with support along a length of the instrument that can be selected by the surgeon. Devices and method described provide adjustability of the instrument without protruding into a gripping surface of the instrument. 1. An ophthalmologic instrument , comprising:a base unit having a lateral gripping surface;a small diameter instrument extending from the base unit, the small diameter instrument having a length;a support frame slidably coupled to the small diameter instrument along the length;a biasing device to urge the support frame towards an extended location along the length of the small diameter instrument; andwherein a distal portion of the support frame is adapted to make contact with a patient's eye and wherein a biasing force of the biasing device may be overcome by pressing the distal portion of the support frame against the patient's eye, to extend the small diameter instrument into a posterior portion of the patient's eye when in use.2. The ophthalmologic instrument of claim 1 , further including one or more supply lines routed through an interior of the base unit to the small diameter instrument.3. The ophthalmologic instrument of claim 2 , wherein the support frame is spaced apart from the one or more supply lines claim 2 , and contained completely within the lateral gripping surface.4. The ophthalmologic instrument of claim 1 , wherein the biasing device includes a spring.5. The ophthalmologic instrument of claim 1 , wherein the biasing device includes a piston adapted to be biased by pneumatic pressure.6. The ophthalmologic instrument of claim 2 , wherein the one or more supply lines includes a supply line chosen from a group consisting of fiber optics claim 2 , media infusion claim 2 , suction claim 2 , and drug claim 2 , or other fluid delivery.7. The ophthalmologic instrument of claim 1 , wherein the small ...

Подробнее
Номер записи: 66
12-08-2021 дата публикации

SELF-CONTAINED OCULAR SURGERY INSTRUMENT

Номер: US20210244873A1
Автор: Wiley William F.
Принадлежит:

A self-contained ocular surgery instrument, including a power module having a body presenting a mating coupler and including a compressed gas supply; a fluid reservoir; an aspiration pump; an aspirated material reservoir and a control panel. The mating coupler is structured to receive and couple to at least one module that facilitates performance of an eye surgery task. The compressed gas supply is coupled to the aspiration pump and the aspirated material reservoir is in fluid communication with the aspiration pump to receive aspirated material from the mating coupler. The fluid reservoir is in fluid communication with the mating coupler such that fluid is supplied under pressure to the mating coupler and thus to the at least one module that facilitates performance of an eye surgery task. The control panel is in controlling communication with the compressed gas supply, the aspiration pump and the aspirated material reservoir. 1. (canceled)2. A method of performing ocular surgery , the method comprising:coupling at least one module that facilitates performance of an eye surgery task to a self-contained hand holdable power module that is not coupled to a console;inserting at least one portion of the at least one module that facilitates performance of the eye surgery task into an eye;performing the eye surgery task; andremoving the at least one portion of the at least one module that facilitates performance of an eye surgery task from the eye.3. The method of performing ocular surgery as claimed in claim 2 , further comprising:selecting or making the at least one module to comprise a lens aspiration module, the lens aspiration module including a module coupler structured to operably attach to the self-contained hand holdable power module via a mating coupler, a lens aspiration tube and an irrigation sleeve; andaspirating fragments of a crystalline lens from the eye by application of the lens aspiration module.4. The method of performing ocular surgery as claimed in ...

Подробнее
Номер записи: 67
11-08-2016 дата публикации

ILLUMINATED MICROSURGICAL INSTRUMENT INCLUDING OPTICAL FIBER WITH BEVELED END FACE

Номер: US20160228207A1
Автор: Lassalas Bruno, Papac Michael James, Yadlowsky Michael J.
Принадлежит:

An illuminated microsurgical instrument includes a microsurgical instrument having a distal tip and an optical fiber for delivering a beam of light to a surgical site. The optical fiber includes a proximal end for receiving a light beam from a light source, and a distal end proximate to the distal tip of the microsurgical instrument for emitting the light beam. The distal end includes a beveled end face either oriented toward or oriented opposite from the distal tip of the microsurgical instrument. 1. (canceled)2. An illuminated microsurgical instrument , comprising:a microsurgical instrument having a distal tip sized and shaped for insertion through an incision in an eye and into a vitreous region of the eye; andan optical fiber for delivering a beam of light to a surgical site of the eye coupled to the microsurgical instrument, the optical fiber including a proximal end for receiving a light beam from a light source, and a distal end proximate to the distal tip of the microsurgical instrument for emitting the light beam, the distal end including a beveled end face oriented away from the distal tip of the microsurgical instrument at an oblique angle with respect to an optical axis of the optical fiber.3. The illuminated microsurgical instrument of claim 2 , wherein:the optical fiber has an index of refraction greater than an index of refraction of the vitreous region of the eye such that a propagation path of the light beam from the beveled end face is towards the microsurgical instrument.4. The illuminated microsurgical instrument of claim 3 , wherein:the microsurgical instrument includes a reflective surface proximate to the distal tip.5. The illuminated microsurgical instrument of claim 2 , wherein:the beveled end face bisects the optical axis of the optical fiber.6. The illuminated microsurgical instrument of claim 2 , wherein:the beveled end face includes a planar surface.7. The illuminated microsurgical instrument of claim 2 , wherein:the beveled end face ...

Подробнее
Номер записи: 68
27-08-2015 дата публикации

APPARATUS AND DIAMOND BLADE MECHANISM TO MAKE AN ANNULAR INCISION IN SOFT TISSUE

Номер: US20150238359A1
Автор: Baro Jorge Alejandro, Bowden Rebeca Kyker, Giardina Christopher Kenneth, Kashlan Khaled Nizar, Mann Kanitha Kim, Saunders Shane Anthony
Принадлежит: Rhexis Surgical Instruments, Inc.

The present invention relates to a device and method for cutting an annular piece out of the soft tissue of a selected mammal. The device can be utilized in surgical situations such as capsularhexis. The device comprises one or more blades which when rotated, cut an annular path. 1. A surgical device for making an annular incision in the soft tissue of a mammal in a surgical procedure wherein the device has one or more diamond blades.2. The device according to wherein one or more of the blades have a horizontal cutting edge apex.3. The surgical device according to wherein there are two opposing cutting blades mounted on opposing apexes of the cutting head.4. The surgical device according to wherein there is one blade.5. The surgical device according to wherein the blades have a foldable hinge attachment to the cutting head in a configuration that makes a portion of its profile smaller for insertion into an incision smaller than the cutting head in a non-folded configuration.65. The surgical device according to through wherein the cutting head is configured for insertion into a tissue incision of about 3 to 10 mm or less.7. The surgical device according to wherein the blade has at least one side edge that is sharpened.8. A surgical device according to for creating an annular incision in the soft tissue of a mammal in a surgical procedure wherein the device comprises:a. a cutting head comprising at least one cutting blade and at least one axial arm with a blade attached to each distal end, and a proximal end of each arm joining at an axial rotation point: wherein the blades are straight and positioned such that when at least one arm is rotated circumferentially about the axial rotation point, the blades trace an annular cutting path; andb. a drive shaft coupled to the axial rotation point which in turn is connected to a crank open device rotation point and connected to a linear shaft at a second pivot point; andc. an actuator attached to the cutting head that causes ...

Подробнее
Номер записи: 69
17-08-2017 дата публикации

Device for cutting tissue

Номер: US20170231818A1
Автор: Volker Geuder
Принадлежит: GEUDER AG

A device for cutting and aspirating tissue from the human or animal body, preferably for use in ophthalmology, particularly for vitrectomy, for retinal peeling, etc., with an outer tube ( 1 ), and with an inner tube ( 11 ), which can move to and fro concentrically in the outer tube ( 1 ) with slight play, wherein the outer tube ( 1 ) is closed at the free end ( 2 ), and has, near the free end ( 2 ), a first and a second lateral opening ( 3, 4 ) with in each case at least one inner cutting edge ( 7, 8 ), wherein the inner tube ( 11 ) is open at the free end and there has an outer cutting edge ( 12 ), wherein the inner tube ( 11 ) has, near the free end, at least one lateral opening ( 13 ) with at least one further outer cutting edge ( 14 ), and wherein the cutting edges ( 7, 8, 12, 14 ) of the outer tube ( 1 ) and of the inner tube ( 11 ) cooperate in a cutting action during the movement of the inner tube ( 11 ), characterized in that the first and second opening ( 3, 4 ) are each designed as an asymmetrical circle, as an asymmetrical circle, a an asymmetrical ellipse or as an asymmetrical oval, and in that a thin web ( 6 ) is formed by the asymmetrical area ( 5 ) of the first and second opening ( 3, 4 ) on the outer tube ( 1 ).

Подробнее
Номер записи: 70
30-08-2018 дата публикации

RECIPROCATING SURGICAL TOOL WITH INERTIAL DAMPER

Номер: US20180243134A1
Автор: Dean Joshua, Gunn Nicholas Max, Johnson Andrew David
Принадлежит:

A handheld reciprocating surgical tool may contain an inertial damper to counteract the momentum of a diaphragm assembly of the reciprocating surgical tool. A momentum of the inertial damper may be tuned such that the momentum of the inertial damper is comparable in magnitude and opposite in direction to a momentum of the diaphragm assembly. The diaphragm assembly may include a cutting tool. The combined momentum of a diaphragm assembly and the inertial damper may result in a reduced net momentum, which may reduce vibration of the reciprocating surgical tool haptically experienced by a surgeon, thereby improving surgeon comfort. 1. A reciprocating surgical tool for use in ophthalmic surgery , comprising:a housing bodya first channel formed in the housing body;a second channel formed in the housing body; a first diaphragm; and', 'a surgical cutter, the first diaphragm being actuated to reciprocate in a first direction and a second direction in response to alternating pneumatic pressures applied to the first diaphragm via the first channel to cause the diaphragm assembly to be displaced in the first direction and via the second channel to cause the diaphragm assembly to be displaced the second direction opposite the first direction, the diaphragm assembly having a first momentum when being displaced in the first direction and the second direction; and, 'a diaphragm assembly having a first mass and comprisingan inertial damper being actuated to reciprocate in the first direction and the second direction in response to the alternating pneumatic pressures applied to the inertial damper via the first channel to cause the inertial damper to be displaced in the second direction and via the second channel to cause the inertial damper to be displaced in the first direction, the inertial damper having a second momentum less than or equal to the first momentum in magnitude when being displaced in the first direction and the second direction, the second momentum and the first ...

Подробнее
Номер записи: 71
06-09-2018 дата публикации

VITREOUS BODY SURGICAL PROBE

Номер: US20180250165A1
Автор: Murakami Etsuo
Принадлежит: MANI, INC.

A vitreous body surgical probe that includes a probe main body having sufficient bending rigidity, and that can make it easy to collect vitreous bodies etc. in the vicinity of the retina which are difficult to reach using the conventional vitreous body surgical probe while securing sufficient suction efficiency. The vitreous body surgical probe includes: a probe main body having a pipe shape; an end part having an approximately tube shape, which is connected to the very end part of the probe main body, has a smaller diameter than the probe main body, and includes a sealed tip surface and an opening in the side; and a cutter, which has matching diameters to respective inner diameters of the probe main body and the end part, has a blade part on a tip, and slides along inner surfaces of the probe main body and the end part. 1. A vitreous body surgical probe , comprising:a probe main body having a pipe shape;an end part having an approximately tube shape, which is connected to the very end part of the probe main body, has a smaller diameter than the probe main body, and includes a sealed tip surface and an opening in the side; anda cutter, which has matching diameters to respective inner diameters of the probe main body and the end part, has a blade part on a tip, and slides along inner surfaces of the probe main body and the end part.2. The vitreous body surgical probe of claim 1 , wherein the inner diameters of the probe main body and the end part are the same. The present invention relates to a vitreous body surgical probe used in ophthalmic surgery.A vitreous body surgical probe used in ophthalmic surgery is used for cutting and removing from an eyeball a jelly-like vitreous body and/or a proliferative membrane (hereafter referred to as ‘vitreous body etc.’) on the retina generated through denaturation of the vitreous body (see Patent Documents 1 and 2, for example).shows a cross-section of a conventional vitreous body surgical probe. Such a conventional vitreous ...

Подробнее
Номер записи: 72
27-11-2014 дата публикации

PNEUMATIC PRESSURE OUTPUT CONTROL BY DRIVE VALVE DUTY CYCLE CALIBRATION

Номер: US20140350583A1
Автор: Leukanech Kurt D., Teodorescu Dan, Zhou Jiansheng
Принадлежит:

In various embodiments, a surgical console may include a pneumatic valve to drive a pneumatic tool coupled to the surgical console. The console may further include a controller operable to control and adjust the valve open/close cycle times according to a valve duty cycle. The valve may switch between ports (valve open time for a first port and valve close time for a second port) such that a total valve time may approximately equal the valve open time plus the valve close time. The valve duty cycle may indicate a percentage of the total valve time for the controller to signal the valve to open and may include an adjustment that corresponds to a signal timing of the open and/or closed valve positions that will result in open and closed operating pressures above a predetermined threshold. 1. A surgical console , comprising:a valve;at least a first port and a second port coupled to the valve, wherein the valve is configured to provide pressurized gas alternately to each of the first port and the second port to drive a pneumatic tool coupled to the surgical console;a controller coupled to the valve, wherein the controller is operable to control the valve open and close times, wherein a valve open time corresponds to a time to open a first port and wherein a valve close time corresponds to a time for closing the first port, wherein closing the first port coincides with opening a second port such that pressurized air is being directed by the valve either through the first port or the second port;wherein the controller is configured to adjust the valve open/close times according to a valve duty cycle;wherein the valve duty cycle corresponds to an adjustment determined by analyzing operating pressure data for the open and closed valve positions and determining the adjustment for at least one of the valve open time and valve close time that will result in open and closed operating differential pressures above a predetermined threshold.2. The surgical console of claim 1 , ...

Подробнее
Номер записи: 73
22-09-2016 дата публикации

SYSTEMS AND METHODS FOR VITRECTOMY

Номер: US20160270957A1
Автор: Easley James C.
Принадлежит:

A system for conducting a vitrectomy includes: a gas source; a vitrector including a cutting mechanism that opens and closes according to a pressure at the vitrector; and a pulse-generating system receiving gas from the gas source and generating pulses at the vitrector. The pulses cause the pressure at the vitrector to vary according to a cycle, and the varying pressure at the vitrector causes the cutting mechanism of the vitrector to open and close. At a first time in the cycle, the pulse-generating system, raises the pressure at the vitrector to a maximum pressure. At a second time in the cycle, the pulse-generating system reduces the pressure at the vitrector to a minimum pressure that is greater than ambient, the pressure at the vitrector being maintained at least at the minimum pressure. The difference between the maximum pressure and minimum pressure is minimized to reduce gas consumption. 120-. (canceled)21. A system for conducting a vitrectomy , the system comprising:a vitrector including a cutting mechanism that opens and closes according to a pressure and a resisting force at the vitrector; anda pulse-generating system generating pulses at the vitrector, the pulses causing the pressure at the vitrector to vary according to a cycle, the varying pressure and the resisting force at the vitrector causing the cutting mechanism of the vitrector to open and close,wherein, at a first time in the cycle, the pulse-generating system generates a pulse and raises the pressure at the vitrector to a maximum pressure to close the cutting mechanism, andat a second time in the cycle, the pulse-generating system reduces the pressure at the vitrector to a minimum pressure that is greater than ambient, the pressure at the vitrector being maintained at least at the minimum pressure and the resisting force causing the cutting mechanism to open.22. The system of claim 21 , wherein the pulse-generating system includes a first valve and a second valve claim 21 , the first valve and ...

Подробнее
Номер записи: 74
22-08-2019 дата публикации

DEVICES AND METHODS FOR OCULAR SURGERY

Номер: US20190254872A1
Автор: Chamness Scott, Clauson Luke W., Reese Brendan, Schaller Michael
Принадлежит:

Devices, systems, and methods for performing an ophthalmic procedure in an eye are disclosed. The devices include a hand-held portion and a distal, elongate member coupled to the hand-held portion having a lumen operatively coupled to a vacuum source. A drive mechanism operatively coupled to the elongate member is configured to oscillate the elongate member. When in use, the device is configured to aspirate ocular material from the eye through the lumen. The drive mechanism retracts the elongate member with a retraction speed profile and advances the elongate member with an extension speed profile. The retraction speed profile is different from the extension speed profile. 1. A device for performing an ophthalmic procedure in an eye , the device comprising:a proximal portion;a distal portion comprising an elongate member and coupled to the proximal portion, the elongate member sized and configured to extend through an anterior chamber of the eye and to a capsular bag of the eye, the elongate member comprising an open distal end;a plurality of vacuum sources, each of the plurality of vacuum sources is detachably physically coupleable to the proximal portion;a vacuum chamber operatively coupled to each of the plurality of vacuum sources and having a first cross-sectional area; anda first pathway operatively coupling the open distal end of the elongate member to the vacuum chamber, the first pathway comprising a second cross-sectional area smaller than the first cross-sectional area of the first chamber; andfurther wherein, in use, the device is configured to aspirate material from the capsular bag of the eye through the open distal end and into the first pathway.2. The device of claim 1 , wherein the vacuum chamber is located distally of at least one of the plurality of vacuum sources.3. The device of claim 1 , wherein claim 1 , with the device in use claim 1 , material aspirated into the first pathway passes through the vacuum chamber and towards at least one of the ...

Подробнее
Номер записи: 75
08-10-2015 дата публикации

Minimal Pulsation Ophthalmic Probe

Номер: US20150282987A1
Автор: McDonell Brian W.
Принадлежит:

An ophthalmic apparatus for performing an ocular surgery may include an ophthalmic probe body having an inner cutting member at least partially disposed within and moveable relative to an aspiration tube within the probe body to facilitate flow of aspiration fluid. A motor within the body may be configured to actuate the inner cutting member relative to the aspiration tube. 1. An ophthalmic apparatus for performing an ocular surgery , comprising:an ophthalmic probe body graspable by a user;a cutter extending from the body and comprising an inner cutting member and a needle, the inner cutting member being at least partially disposed within and moveable relative to the needle, the inner cutting member having a lumen having a first diameter, the needle having a distal end with a port formed therein for receiving patient tissue;an aspiration tube within the probe body disposed to extend from the end of the inner cutting member to an aspiration line from the probe body, the aspiration tube having a second diameter greater than the first diameter to facilitate flow of aspiration fluid; anda motor within the body configured to actuate the inner cutting member relative to the needle and configured to actuate the inner cutting member relative to the aspiration tube.2. The ophthalmic apparatus of claim 1 , wherein the inner cutting member is coaxial with the aspiration tube.3. The ophthalmic apparatus of claim 1 , wherein the aspiration tube is fixed in place so as to be stationary relative to the probe body.4. The ophthalmic apparatus of claim 1 , further comprising:a drive shaft connected to the motor; anda coupler coupling the drive shaft to the inner cutting member so that when the motor actuates the drive shaft, the coupler actuates the inner cutting member.5. The ophthalmic apparatus of claim 4 , wherein the drive shaft is larger than the aspiration tube claim 4 , the aspiration tube being disposed within the drive shaft.6. The ophthalmic apparatus of claim 5 , wherein ...

Подробнее
Номер записи: 76
11-12-2014 дата публикации

OCULAR LENS CUTTING DEVICE

Номер: US20140364885A1
Автор: Humayun Mark S., Kerns Ralph, McCormick Matthew T., Wells Trent Spencer
Принадлежит: Doheny Eye Institute

Ocular lens cutting devices and methods for cutting and removing tissue such as lens fragments from an eye of a patient are disclosed. In one embodiment, an ocular lens cutting device includes an outer member and an inner member positioned within the outer member. The outer member and the inner member can each include at least one cutting edge. The at least one cutting edge of the outer member and the at least one cutting edge of the inner member can cooperate to form a cutting structure as the inner member moves with respect to the outer member. The ocular lens cutting device can also be connected to a vacuum source which can allow the ocular lens cutting device to grasp the tissue to be cut and remove the cut fragments from the surgical area. 1. An ocular cutting device comprising:a housing having a motor positioned within the housing; an aspiration line; and an outer sleeve member coupled in fixed relationship to the housing and having a proximal end and a distal end, the proximal end coupled to the housing, the distal end having first and second openings, the first opening having a first cutting edge; and', 'an inner sleeve member having a proximal end and a distal end, the inner sleeve member positioned within the outer sleeve member, the motor operatively coupled to the proximal end to move the inner sleeve member relative to the outer sleeve member, the inner sleeve member having a third opening with a second cutting edge wherein the first opening and third opening are configured to interact to cut tissue between the first and second cutting edges; and, 'a working end coupled to the aspiration line, the working end comprisingwherein the second opening of the outer sleeve is configured to remain unobstructed by the movement of the inner sleeve such that a vacuum applied to the working end through the aspiration line allows the second opening to hold a tissue mass at a first location of the tissue mass while the tissue mass is cut and removed by the working end ...

Подробнее
Номер записи: 77
11-12-2014 дата публикации

Vitrectomy probe with adjustable cutter port size

Номер: US20140364886A1
Автор: Jack Robert Auld, John Christopher Huculak, John R. Underwood
Принадлежит: Alcon Research LLC

Vitrectomy probes and system related thereto are disclosed herein. The disclosure describes various example vitrectomy probes having an adjustable cutting port size. Various example features are described for adjusting the size of the cutting port. Further, the disclosure provides examples for adjusting the size of the cutter port while the vitrectomy probe is in operation.

Подробнее
Номер записи: 78
27-09-2018 дата публикации

Ophthalmic surgical device for cutting a circular incision

Номер: US20180271704A1
Автор: ELIAHU Eliachar, Eliyahu BSHARIM, Nadav Yaakov BELFAIR, Nathan BUKHDRUKER, Nir Lilach, Tova LIFSHITZ
Принадлежит: MOR RESEARCH APPLICATIONS LTD

Aspects of embodiments relate to a surgical device for assisting a user of the device to cut a circular incision in an anterior lens capsule tissue, the device comprising an arm member having a proximal end and a distal end, wherein the distal end of the arm member is operative to receive a cutting member; and an actuator arrangement comprising an actuating handle operatively coupled with the arm member, such that, responsive to an operating input provided at the actuating handle, the distal end of the arm member traverses a circular path around a first axis of the tissue to cause the cutting member to form a circular incision in the tissue along the circular path.

Подробнее
Номер записи: 79
27-09-2018 дата публикации

VITRECTOMY PROBE WITH ROTATIONAL HELICAL CUTTER

Номер: US20180271705A1
Автор: Valencia Salomon
Принадлежит:

Vitrectomy probes and methods related thereto are disclosed herein. The disclosure describes various example vitrectomy probes having a rotational helical cutter. An example helical cutter includes an outer cutter portion and an inner cutter portion received therewithin. The inner cutter portion is operable to rotationally reciprocate within the outer cutter portion about a longitudinal axis thereof. A helical shearing surface formed at a distal end of the inner cutter portion is operable to sever material entering the cutter via a port formed in the outer cutter portion. 1. A vitrectomy probe comprising:a handle; [ a cylindrical member defining a first lumen; and', 'a first port formed proximate to a distal end of the outer cutter portion; and, 'an outer cutter portion coupled to the handle, the outer cutter portion comprising, a cylindrical member defining a second lumen, the second lumen in fluid communication with the first lumen;', 'a distal end comprising a first helical shearing edge extending around at least a portion of the circumference of the distal end, the inner cutter portion rotatable in a first direction about the longitudinal axis such that at least a portion of the helical shearing edge is rotated past the first port to perform a shearing action., 'an inner cutter portion received within the first lumen and rotatable within the outer cutter portion about the longitudinal axis, the inner cutter portion comprising], 'a cutter extending longitudinally along a longitudinal axis from a distal end of the handle, the cutter comprising2. The vitrectomy probe of claim 1 , wherein the first port comprises a port shearing edge claim 1 , and wherein the port shearing edge and the first helical shearing edge cooperate to perform the shearing action.3. The vitrectomy probe of claim 1 , wherein the inner cutter portion further comprises a vertical edge parallel with the longitudinal axis claim 1 , the first helical edge extending from a proximal end of the ...

Подробнее
Номер записи: 80
05-09-2019 дата публикации

Devices and methods for the removal of lenticular tissue

Номер: US20190269557A1
Автор: Luke W. Clauson, Maria Tsontcheva GUGUCHKOVA
Принадлежит: Carl Zeiss Meditec Cataract Technology Inc

An exemplary surgical device includes a shaft with a lumen defined therethrough and an element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen; wherein motion from the stored position to the deployed position causes a first leg of the element to advance distally relative to the distal end of the shaft, and causes a second leg of the element to move proximally relative to the distal end of the shaft.

Подробнее
Номер записи: 81
16-12-2021 дата публикации

VITRECTOMY NEEDLE, A VITRECTOME, A VITRECTOMY DEVICE AND A METHOD OF MANUFACTURING A VITRECTOMY NEEDLE

Номер: US20210386583A1
Автор: Thyzel Reinhardt
Принадлежит:

A vitrectomy needle comprises a hollow needle with a distal end for insertion into the vitreous body of an eye for performing a vitrectomy. The vitrectomy needle further comprises a laser light guide guided in the hollow needle to the distal end and has a light-emitting surface oriented towards the distal end. A cavity is formed between the light-emitting surface and the axially inward-facing surface of the distal end. In the area of the cavity, the wall of the hollow needle has an aperture extending radially with respect to the middle axis (M) of the hollow needle. The vitrectomy needle, has a straight section at the proximal end, the middle axis (M) defining a central axis (Z) in the region of the straight section. The middle axis (M) of the hollow needle may be spaced apart from the central axis (Z) by a predetermined minimum radial distance (R). 113- (canceled)14. A vitrectomy needle comprising:a hollow needle with a distal end for insertion into the vitreous body of an eye for performing a vitrectomy; anda laser light guide guided in the hollow needle to the distal end with a light-emitting surface oriented towards a distal end; a cavity is formed in the hollow needle in the region of the light-emitting surface and the axially inward-facing surface of the distal end;', 'the wall of the hollow needle has an aperture in the region of the cavity which aperture extends radially with respect to the middle axis (M) of the hollow needle;', 'the vitrectomy needle, in particular the hollow needle, has a straight section at the proximal end;', 'the middle axis (M) defines a central axis (Z) in the region of the straight section; and', 'the middle axis (M) of the hollow needle is spaced apart from the central axis (Z) by a predetermined minimum radial distance (R) in the region of the aperture., 'wherein15. The vitrectomy needle according to claim 14 , wherein claim 14 , starting from the straight section towards the distal end claim 14 , the hollow needle has a curvature ...

Подробнее
Номер записи: 82
16-12-2021 дата публикации

VITRECTOME ACTUATOR

Номер: US20210386587A1
Автор: DAM-HUISMAN Adriaantje Coliene
Принадлежит: Crea IP B.V.

An actuation system for an ophthalmic cutting tool is disclosed. The system comprises a chamber () separated by a diaphragm () into a first compartment () a second compartment (). A first port () is provided in fluid communication with the first compartment () and a first conduit () connected to the ophthalmic cutting tool and a second port () is provided in fluid communication with the second compartment () and a second conduit () connected to the ophthalmic cutting tool. The diaphragm () is movably mounted within the chamber () and is configured for alternate movement between a first position and a second position to alternately increase and decrease the volume of the first and second compartments. A drive system () is provided to drive oscillation of a diaphragm actuator () for moving the diaphragm between the first and second positions. 1. An actuation system for an ophthalmic cutting tool comprising:a housing comprising a chamber fluidically separated by a diaphragm into a first compartment defining a first internal volume and a second compartment defining a second internal volume;a first port is provided in fluid communication with the first compartment, and configured for connection to a first conduit connected to a handheld ophthalmic cutting tool;a second port is provided in fluid communication with the second compartment, and configured for connection to a second conduit connected to the ophthalmic cutting tool; wherein the diaphragm is movably mounted within the chamber and is configured for alternate movement between a first position and a second position, such that movement from the first position to the second position decreases the first volume and increases the second volume;wherein the system further comprises:a diaphragm actuator configured to oscillate back and forth to move the diaphragm between the first position and the second position, anda drive system configured to drive the oscillation of the diaphragm actuator.2. The system according to ...

Подробнее
Номер записи: 83
12-09-2019 дата публикации

VITRECTOMY SURGICAL APPARATUS WITH CUT TIMING BASED ON PRESSURES ENCOUNTERED

Номер: US20190274880A1
Автор: Gerg James B., Hickey Lauren M., Lee Fred C., Lynn Kyle E., ZHANG Zheng
Принадлежит:

A vitrectomy apparatus is provided, including a pressure source, a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device, a sensor configured to sense pressure provided from the cut valve, and a controller configured to control operation of the cut valve based on pressure sensed by the sensor. The controller is configured to monitor pressures encountered and alter cut valve timing based on pressure conditions previously encountered. 124-. (canceled)25. A vitrectomy apparatus , comprising:a pressure source;a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device;a sensor configured to sense pressure provided from the cut valve; anda controller configured to control operation of the cut valve based on pressure sensed by the sensor;wherein the cut valve is pneumatically connected to the sensor and electronically connected to the controller, wherein the controller is configured to monitor pressures encountered and alter cut valve timing based on pressure conditions previously encountered, and characterized in thatthe controller is configured to monitor and maintain a peak pressure value and trough pressure value encountered, wherein peak pressure encountered represents a maximum pressure encountered and trough pressure comprises a minimum pressure encountered.26. The vitrectomy apparatus of claim 25 , wherein the controller is further configured to alter cut valve timing based on a pressure encountered relative to the peak pressure value and the trough pressure value.27. The vitrectomy apparatus of claim 26 , wherein the controller is further configured to monitor a time following transition between issuing a command to the cut valve and one from the group consisting of the peak pressure value and the trough pressure value claim 26 , ...

Подробнее
Номер записи: 84
13-10-2016 дата публикации

HIGH SPEED PNEUMATIC VALVE

Номер: US20160296370A1
Автор: Farley Mark
Принадлежит:

A pneumatic valve directs pressurized air to and air exhaust from a surgical implement, such as a dual actuation vitreous probe. The pneumatic valve includes an axially symmetric valve body configured to rotate from a first position, in which the pneumatic valve places a first port of the surgical implement in fluid communication with the pressurized air and a second port of the surgical implement in fluid communication with the air exhaust, to a second position, in which the pneumatic valve places the first port in fluid communication with the air exhaust and the second port in fluid communication with the pressurized air, and back to the first position, in one rotational direction. As such, the axially symmetric valve body continuously rotates in one rotational direction to alternate the pressurized air and the air exhaust between the two ports of the surgical implement to drive the dual actuation operation. 1. A surgical system comprising:a surgical implement comprising a first port and a second port;a fluid pressure supplying device configured to supply a pressurized fluid to the surgical implement;a fluid exhaust manifold configured to direct a fluid exhaust from the surgical implement;a pneumatic valve configured to rotate from a first position in which the pneumatic valve places the first port of the surgical implement in fluid communication with the fluid pressure supplying device and places the second port of the surgical implement in fluid communication with the fluid exhaust manifold, to a second position in which the pneumatic valve places the first port of the surgical implement in fluid communication with the fluid exhaust manifold and the second port of the surgical implement in fluid communication with the fluid pressure supplying device, and the pneumatic valve is configured to rotate within the housing from the second position back to the first position, in one rotational direction.2. The surgical system of claim 1 , wherein the pneumatic valve ...

Подробнее
Номер записи: 85
19-09-2019 дата публикации

DEVICES AND METHODS FOR CUTTING A LENS IN AN EYE

Номер: US20190282402A1
Автор: Chamness Scott, Clauson Luke W., Hoekendijk Jens, Schaller Michael
Принадлежит: Carl Zeiss Meditec Cataract Technology Inc.

Devices and methods for cutting a lens in the eye are provided with a specific application being for cutting a lens while contained within the capsular bag. The device has an elongate element which forms a loop. The loop is advanced into a space between the lens and the capsular bag. The device may be used with, or incorporated into, fluid handling devices such as irrigation and aspiration devices and phacoemulsification hand pieces and disposables. 192.-. (canceled)93. A device for cutting a lens in a cataract procedure comprising:a support shaft; andan elongate element coupled to the support shaft, the elongate element having a first end and a second end, at least one of the first end and the second end being movable relative to the other end to change a size of a loop formed at least in part by the elongate element, the loop being movable from a collapsed position to an expanded position, the loop being in the collapsed position during an introducing step into the eye and being in the expanded position when the loop is positioned around the lens, the lens being cut by reducing a size of the loop when the loop is positioned around the lens, wherein the elongate element has an elbow at the first end, the elbow extending from the support shaft when the loop is in the expanded position.94. (canceled)95. The device of claim 93 , wherein the second end of the elongate element is releasably coupled to the support shaft claim 93 , wherein release of the second end permits withdrawal of the second end from the eye.96. (canceled)97. The device of claim 93 , wherein the elbow of the elongate element extends proximally from the support shaft when the loop is in the expanded position.98. The device of claim 93 , wherein the elongate element forms the loop so that a loop plane is defined in the expanded position claim 93 , the elbow being at least twice as flexible in bending for a force applied to a tip of the elbow and lying in the loop plane compared to a transverse force ...

Подробнее
Номер записи: 86
29-10-2015 дата публикации

VITRECTOMY SURGICAL APPARATUS EMPLOYING MULTISENSOR PRESSURE FEEDBACK

Номер: US20150305935A1
Автор: Hajishah Abraham, Mallough Mitchell W
Принадлежит:

A vitrectomy apparatus is provided, including a pressure source, a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device, a plurality of sensors provided at a plurality of points between the pressure source and the vitrectomy handpiece, and a controller configured to employ a function correlating a desired cut rate with a pressure source duty cycle and employ a different function when one sensor of the plurality of sensors senses a pressure outside a predetermined pressure range. 1. A vitrectomy apparatus , comprising:a pressure source;a cut valve connected to the pressure source, the cut valve configured to be turned on and off to provide pressure to selectively extend and retract a vitrectomy cutting device;a plurality of sensors provided at a plurality of points between the pressure source and a vitrectomy handpiece; anda controller configured to selectively provide commands to change pressure source duty cycle according to a function selected from a plurality of functions when one sensor of the plurality of sensors measures a pressure outside a predetermined pressure range.2. The vitrectomy apparatus of claim 1 , wherein the function is a linear function.3. The vitrectomy apparatus of claim 1 , wherein the pressure source comprises a pump comprising a pump core and a pressure regulator configured to control pressure supplied from the pump core.4. The vitrectomy apparatus of claim 1 , wherein each sensor comprises a passage configured to monitor pneumatic pressure at a point between the cut valve and the vitrectomy cutting device.5. The vitrectomy apparatus of claim 4 , wherein the controller is configured to monitor pressure and control duty cycle based on readings received from three sensors positioned between the pressure source and the vitrectomy handpiece.6. The vitrectomy apparatus of claim 1 , wherein the controller is configured to: ...

Подробнее
Номер записи: 87
10-09-2020 дата публикации

VITRECTOMY PROBE

Номер: US20200281769A1
Автор: Auld Jack Robert, Lopez Jose Luis, McCawley Matthew Douglas, McDonell Brian William, Ryan Timothy C., Underwood John R., Valencia Salomon
Принадлежит:

In some embodiments, a vitrectomy probe may include an inner cutting tube reciprocating in an outer tube. The outer tube includes a side port and the inner tube includes a distal cutting port, and, in some embodiments, an additional side port. In some embodiments, the inner tube may also include a flat upper edge that cuts across the outer tube side port. In some embodiments, a diaphragm drives the inner tube and may have an open-stroke side with a lower hardness material than a closed-stroke side. In some embodiments, an aspiration tube coupled to the vitrectomy probe may include a first aspiration tubing and a second aspiration tubing with a lower hardness than the first aspiration tubing. In some embodiments, the vitrectomy probe may be coupled to pneumatic tubing that is stepped or tapered. 1. A vitrectomy probe , comprising:an outer cutting tube with an outer port side opening;an inner cutting tube, positioned inside the outer cutting tube, wherein the inner cutting tube has an open distal end having a cutting edge;wherein the inner cutting tube further comprises a distal side port with a distal side port cutting edge positioned on the distal side port such that as the inner cutting tube retracts inside the outer cutting tube, tissue entering the outer port side opening also enters the distal side port of the inner cutting tube to be cut by the distal side port cutting edge as the inner cutting tube is retracted in the outer cutting tube;a diaphragm coupled to the inner cutting tube, wherein the diaphragm is located inside a drive chamber and the diaphragm is configured to move back and forth inside the drive chamber as air is alternately supplied and vented on either side of the diaphragm in the drive chamber;wherein movement of the diaphragm causes the inner cutting tube to oscillate inside the outer cutting tube such that the open distal end of the inner cutting tube moves back and forth across the outer port side opening to cut tissue entering the outer ...

Подробнее
Номер записи: 88
17-09-2020 дата публикации

OPHTHALMIC CUTTING INSTRUMENTS HAVING INTEGRATED ASPIRATION PUMP

Номер: US20200289319A1
Автор: Carter Brett, Chamness Scott, Clauson Luke W., Lewis Nicholas G., Newell Matthew, Raye Michael, Rector Thomas M., Schaller Michael P.
Принадлежит:

A device for extracting lens material from an eye including a distal, disposable portion releasably coupleable to a proximal, reusable portion. The disposable portion includes a cutting tube having a distal cutting tip and an inner lumen having an open distal end. The disposable portion includes an aspiration pump fluidly coupled to the inner lumen of the cutting tube and a cutting tube drive mechanism configured to oscillate the cutting tube. The reusable portion includes an aspiration pump motor configured to drive the aspiration pump and a coupler for releasably operatively coupling the pump motor to the aspiration pump. Related devices, systems, and methods are disclosed.

Подробнее
Номер записи: 89
02-11-2017 дата публикации

SURGICAL INSTRUMENT

Номер: US20170311970A1
Автор: Ichikawa Kazuo
Принадлежит:

A surgical instrument () is provided with a rigid probe (), and cuts off the trabecular meshwork by inserting this probe () into the canal of Schlemm. An inner tube portion having a cutter is equipped inside the probe, and the trabecular meshwork sucked in from a hole portion () is cut off by the cutter due to the movement of the inner tube portion. A protection portion () is formed on the tip the probe () and protects the outer wall of the canal of Schlemm when cutting the trabecular meshwork. According to the invention, an ophthalmic surgical instrument for glaucoma patients is provided, the surgical instrument having excellent operability and preventing cutting of parts that should not be cut off without fail. 13-. (canceled)4. A surgical instrument used in a cutting operation of a trabecular meshwork in the human eye , the surgical instrument comprising:a body portion utilizable as a handle or gripper, having a tubular shape;a rigid probe extending from one end of the body portion and having a tubular shape with a smaller diameter than the body portion;said probe comprising;an outflow port provided to dispense a cleaning liquid toward a trabecular meshwork,a suction port provided to collect the cleaning liquid dispensed from the outflow port and to suck the trabecular meshwork into the probe,a cutting blade to cut the trabecular meshwork sucked through the suction port,at least one passage being provided in the probe and the body portion to supply the cleaning liquid to the outflow port from a source outside the surgical instrument, and another passage being provided in the probe and the body portion to feed the sucked liquid and the cut trabecular meshwork from the suction port out of the surgical instrument,said surgical instrument further comprising a protector having a substantially L-shaped section extending along an outer profile of the probe and configured to protect an outer wall of a Schlemm's canal which is a part of a human eye that is not to be ...

Подробнее
Номер записи: 90
02-11-2017 дата публикации

DEVICES AND METHODS FOR CUTTING LENTICULAR TISSUE

Номер: US20170312125A1
Автор: Clauson Luke W., Guguchkova Maria Tsontcheva, Ianchulev Pravoslava Tsontcheva, IANCHULEV Tsontcho Alexandrov, Lari David R., Schaller Michael Paul
Принадлежит: Iantech, Inc.

An exemplary surgical device includes an element positionable within a shaft having a lumen defined therethrough with the element movable from a stored position to a deployed position in which a larger portion of the element extends out of the distal end of the lumen. The element forming a closed loop which is positioned around the lens while the lens is within a capsular bag. The closed loop is reduced in size to form a cut in the lens. 195-. (canceled)96. A method of cutting a lens positioned in a capsular bag , comprising:positioning an element of a device with the element positioned above a lens in a first configuration, the lens being within a capsular bag and having a posterior surface, an anterior surface and an axis, the lens also having a circumference that separates the anterior surface from the posterior surface, the element extending through a lumen in a shaft;extending the element out of the lumen in the shaft from the first configuration to a second configuration, the element advancing between the lens and the capsular bag as the element moves toward the second configuration, the device forming a closed loop in the second configuration with the closed loop having an open area;positioning the element around the whole lens with the element in the second configuration; andtensioning the element to cut the whole lens.97142-. (canceled)143. The method of claim 96 , wherein:the extending is carried out with the closed loop formed by the device increasing in size during the extending, when the element is in the first configuration the closed loop is in a collapsed condition which is smaller than an unbiased shape of the closed loop.144. The method of claim 143 , wherein:the extending is carried out with the closed loop expanding toward the unbiased shape to advance the closed loop between the capsular bag and the lens.145. (canceled)146. The method of claim 96 , wherein:the extending is carried out with the closed loop formed by the device advancing between ...

Подробнее
Номер записи: 91
02-11-2017 дата публикации

VITRECTOMY APPARATUS, SYSTEM AND METHOD

Номер: US20170312131A1
Автор: Maholtra Madan
Принадлежит:

A vitrectomy cutter apparatus and method. The apparatus (and method) is efficient in facilitating removal of vitreous humor during intraocular surgery such as a vitrectomy procedure for the human eye. The apparatus includes an exterior cylindrical member with ports substantially separately and/or oppositely disposed from each other. An interior cylindrical member reciprocates within the exterior cylindrical member to cut vitreous received via the separately disposed ports. The interior cylindrical member includes a funnel-shaped distal end and a spiral cut axially to reduce friction between the external and internal cylindrical members. 1. An apparatus comprising:an exterior cylindrical member having two substantially oppositely disposed or separated sets of ports including a first plurality of ports, and a second plurality of ports that are disposed substantially oppositely from the first plurality of ports, the two substantially oppositely disposed sets of ports for receiving vitreous during a vitrectomy procedure, the exterior cylindrical member having an open proximal end and a closed distal end, and the two substantially oppositely disposed sets of ports being positioned adjacent to the closed distal end of the exterior cylindrical member; andan interior cylindrical member reciprocating axially within the exterior cylindrical member, the interior cylindrical member having an open proximal end and an open distal end, with the open distal end of the interior cylindrical member being adjacent to the closed distal end of the exterior cylindrical member, wherein a cutting edge is formed on said open distal end of the interior cylindrical member, the cutting edge for cutting vitreous that is receivable through the two substantially oppositely disposed sets of ports as the interior cylindrical member reciprocates within the exterior cylindrical member.2. The apparatus of wherein the first plurality of ports is structured to have at least three ports.3. The apparatus ...

Подробнее
Номер записи: 92
01-11-2018 дата публикации

Internally illuminated surgical probe

Номер: US20180311074A1
Автор: Tammo Heeren
Принадлежит: NOVARTIS AG

A surgical probe (e.g., for treating an eye of a patient) includes a body, a cutting element extending distally from the body including a sleeve member comprising a port at an end, and an inner member disposed within the sleeve member, the inner member being movable (e.g., axially) with respect to the sleeve member to open and close the port. The probe further includes an illumination element disposed within the sleeve member, the illumination element configured to project light out of the port.

Подробнее
Номер записи: 93
19-11-2015 дата публикации

APPARATUS FOR PERFORMING PHACO-EMULSIFICATION

Номер: US20150328048A1
Автор: KOPLIN Richard S.
Принадлежит:

An apparatus provides mechanical energy to vibrate a needle. An irrigating sleeve is disposed around the needle and includes one or more irrigation ports through which irrigation liquid is ejected during emulsification. To prevent the needle from occluding the irrigation ports with its deflections, one or more bumpers are provided between the sleeve and the needle.

Подробнее
Номер записи: 94
09-11-2017 дата публикации

DISPOSABLE VITRECTOMY HANDPIECE

Номер: US20170319387A1
Автор: Barnes Aaron, DeBoer Charles, McCormick Matthew
Принадлежит:

Electric vitrectomy handpieces are provided. The handpiece includes a motor, a clutch mechanism, an oscillating drive mechanism, a cutting tip and a handle. The motor is attached to the clutch, and the clutch is attached to the oscillating drive mechanism. When the motor is operational, the clutch expands to engage the oscillating drive mechanism and the oscillating drive mechanism converts the rotational motion of the clutch to the reciprocating motion of the cutting tip. When the motor is at rest, the clutch retracts to allow aspiration. 118-. (canceled)19. A vitreous cutter comprising:a motor configured to provide rotary motion;a handle;a cutter tip;an aspiration line; anda clutch mechanism coupled to the motor and the cutter tip, the clutch mechanism configured to expand to engage the cutter tip when the motor is activated, and retract to provide aspiration through the aspiration line when the motor is at rest, the clutch mechanism comprising a first component and a second component rotatable relative to each other.20. The vitreous cutter of claim 19 , whereinthe clutch mechanism further comprises a ball configured to ride in a groove in the first component; andthe second component configured to maintain the ball in the groove of the first component.21. The vitreous cutter of claim 20 , wherein the groove has a sinusoidal profile.22. The vitreous cutter of claim 20 , wherein the ball is configured to move along the groove such that the first component and the second component expand and contract relative to each other.23. The vitreous cutter of claim 19 , wherein the clutch mechanism further comprises an oscillating drive mechanism configured to convert the rotational motion of the first component and the second component into reciprocating linear motion.24. The vitreous cutter of claim 19 , wherein the clutch mechanism is configured to extend and retract the cutter tip.25. The vitreous cutter of claim 19 , wherein the motor is configured to operate in reverse ...

Подробнее
Номер записи: 95
01-10-2020 дата публикации

Device and method for fracturing and removing ocular lenses

Номер: US20200306084A1
Автор: Alejandro Arciniegas Castilla, Andres Leonardo Gonzalez Mancera, Fernando Ramirez Rodriguez, Rafael Orlando Romero Romero
Принадлежит: Universidad de los Andes Chile

The present invention relates to a device for fracturing and removing ocular lenses. The device mainly comprises a rotational screw drill, a sleeve and a hydraulic suction system. The rotational screw drill has reversed conical propellers which help to grind the particles. The rotational screw drill is housed in a sleeve, which comprises a rigid cylinder and a suction cup. The suction cup has a bell or funnel shape with an elliptical cross-section. Finally, the hydraulic suction system is key for the present invention performance. Also, the invention relates to a method comprising the steps of breaking, splitting the cataract or lens tissue and simultaneously or subsequently grinding the particles inside the sleeve by means of the rotational screw drill and the sleeve, and finally removing them from the medium via the sleeve by means of a hydraulic suction system.

Подробнее
Номер записи: 96
26-11-2015 дата публикации

DEVICE FOR CUTTING AND ASPIRATING TISSUE

Номер: US20150335485A1
Автор: Draheim René, Frauenfeld Dieter, Geuder Volker, RIEGER Frank
Принадлежит:

The present invention relates to a device for cutting and aspirating tissue from the human or animal body, in particular for use in vitrectomy, epiretinal membrane peeling, etc., with an outer tube (), and with an inner tube () which is movable to and fro and concentrically in the outer tube () with slight play, wherein the outer tube () is closed at the free end and has, near the free end, at least one lateral opening () with at least one inner cutting edge (), wherein the inner tube () is open at the free end and there has an outer cutting edge (), and wherein the cutting edges cooperate in a cutting action during the movement of the inner tube () relative to the outer tube (), advantageously characterized by a shaping measure in or on the outer tube () and/or in or on the inner tube (), whereby the inner tube (), at least in the area of the lateral opening (), runs in the outer tube () with at least slight pretensioning. 115-. (canceled)16. A device for cutting and aspirating tissue from the human or animal body , said device comprising:{'b': '1', 'an outer tube (); and'}{'b': 2', '1, 'an inner tube () arranged concentrically inside the outer tube (), with little play, in a manner allowing sliding back and forth,'} [{'b': 1', '8', '5, 'the outer tube () is closed on the free end thereof, and has at least one lateral opening (), the same having at least one inner cutting edge () close to the free end,'}, {'b': 2', '4, 'the inner tube () is open on the free end thereof, and has an outer cutting edge (),'}, {'b': 4', '5', '2', '1', '2, 'the cutting edges (, ) work together by cutting when the inner tube () slides with respect to the outer tube (), with a shaping measure performed at least one of in or on the inner tube (),'}, {'b': 2', '1', '3, 'the inner tube () runs in the outer tube () with at least a small amount of pretensioning, at least in the region of the lateral opening (),'}, {'b': 2', '2', '1, 'the inner tube () is at least one of bent or is given a ...

Подробнее
Номер записи: 97
08-11-2018 дата публикации

DEVICES AND METHODS FOR OCULAR SURGERY

Номер: US20180318132A1
Автор: Chamness Scott, Clauson Luke W., Reese Brendan, Schaller Michael P.
Принадлежит:

Devices, systems, and methods for performing an ophthalmic procedure in an eye are disclosed. The devices include a hand-held portion and a distal, elongate member coupled to the hand-held portion having a lumen operatively coupled to a vacuum source. A drive mechanism operatively coupled to the elongate member is configured to oscillate the elongate member. When in use, the device is configured to aspirate ocular material from the eye through the lumen. The drive mechanism retracts the elongate member with a retraction speed profile and advances the elongate member with an extension speed profile. The retraction speed profile is different from the extension speed profile. 165.-. (canceled)66. A method for performing an ophthalmic procedure in an eye , the method comprising: a hand-held portion comprising a vacuum source configured to create pulses of discontinuous negative pressure and to create pulses of discontinuous positive pressure, the pulses of discontinuous negative pressure interspersed by the pulses of discontinuous positive pressure and having a frequency; and', 'a distal, elongate member coupled to the hand-held portion and forming part of the distal portion, the elongate member having an internal lumen and an opening at a distal end region of the elongate shaft;, 'inserting a distal portion of a device into an anterior chamber of the eye, the device further comprisingaccessing a lens of the eye with the distal portion of the device; andactivating the device to create the pulses of discontinuous negative pressure through the internal lumen of the elongate member to aspirate a first amount of material into the internal lumen through the opening at the frequency, and to create the pulses of discontinuous positive pressure interspersed with the pulses of discontinuous negative pressure to expel, from the internal lumen through the opening, a second amount of material at the frequency, wherein the second amount is substantially less than the first amount.67 ...

Подробнее
Номер записи: 98
08-11-2018 дата публикации

DEVICES AND METHODS FOR OCULAR SURGERY

Номер: US20180318133A1
Автор: Clauson Luke W., Schaller Michael P.
Принадлежит:

Devices, systems, and methods for performing an ophthalmic procedure in an eye are disclosed. The devices include a hand-held portion and a distal, elongate member coupled to the hand-held portion having a lumen operatively coupled to a vacuum source. A drive mechanism operatively coupled to the elongate member is configured to oscillate the elongate member. When in use, the device is configured to aspirate ocular material from the eye through the lumen. The drive mechanism retracts the elongate member with a retraction speed profile and advances the elongate member with an extension speed profile. The retraction speed profile is different from the extension speed profile. 1. A device for performing an ophthalmic procedure in an eye , the device comprising:a hand-held portion;a distal, elongate member coupled to the hand-held portion, the distal, elongate member comprising a lumen operatively coupled to a vacuum source; anda drive mechanism operatively coupled to the elongate member and configured to oscillate the elongate member,wherein in use, the device is configured to aspirate ocular material from the eye through the lumen, andwherein in use, the drive mechanism is capable of retracting the elongate member in a proximal direction with a retraction speed profile and advancing the elongate member in a distal direction with an extension speed profile, and further wherein the retraction speed profile is different from the extension speed profile.2. The device of claim 1 , wherein an average retraction speed of the elongate member from the retraction speed profile is lower than an average extension speed of the elongate member from the extension speed profile.3. The device of claim 1 , wherein the drive mechanism operatively coupled to the elongate member is configured to asymmetrically oscillate the elongate member.4. The device of claim 3 , wherein the extension speed profile comprises a maximum extension speed and the retraction speed profile comprises a maximum ...

Подробнее
Номер записи: 99
17-10-2019 дата публикации

Vitrectomy instrument with multiple rotating cutting edges

Номер: US20190314201A1
Автор: Omeed PAYDAR
Принадлежит: Alcon Inc

Provided herein are vitrectomy instruments and related systems and methods in which example vitrectomy instruments have multiple rotating cutting edges for severing vitreous fibers. An example vitrectomy instrument may include a handle; an outer tube; and an inner tube configured to be rotated within the outer tube in multiple oscillating rotational cycles. The outer tube may include a port disposed at a distal end thereof. The inner tube may include at least first and second forward cutting edges, so that rotation in a first rotational direction results in both the first and second forward cutting edges cutting vitreous fibers drawn into the port. The inner tube may also include one or more backward cutting edges, so that rotation in a second rotational direction results in one or more backward cutting edges cutting vitreous fibers drawn into the port. Additional forward and/or backward cutting edges may be provided.

Подробнее
Номер записи: 100