СПОСОБ ИЗГОТОВЛЕНИЯ ТРУБЧАТОГО МЕДИЦИНСКОГО ИМПЛАНТАТА

Группа изобретений относится к медицине. Способ может быть использован для прошивания трубчатого имплантата, который имеет прямой участок преимущественно с параллельными стенками и, по меньшей мере, один конусный участок с конусными стенками. Для осуществления способа предлагается сшивное устройство. Устройство способно пришивать проволоку или иные конструкции к поверхности трубчатого имплантата для формирования трубчатых приспособлений, например трансплантатов-стентов. Устройство имеет бобину, которая может помещаться в челноке. Бобина перемещает нижнюю нить через просвет трубчатого трансплантата и формирует шов в сочетании с верхней нитью. Верхнюю нить перемещает игла, протыкающая стенку трансплантата. Технический результат - повышение производительности способа, улучшение качества имплантата и снижение его стоимости. 3 н. и 16 з.п. ф-лы, 5 ил.

УСТРОЙСТВО ДЛЯ ПРОДВИЖЕНИЯ СТЕНТОВ

Изобретение относится к медицинской технике, а именно к устройствам для размещения стентов, например, в сосуде или протоке тела или в структуре, используемой для тестирования или демонстрирования (такой как полимерная трубка). Устройство для продвижения стента содержит наружный футляр и стент-зацепляющий элемент, расположенный внутри наружного футляра. Стент-зацепляющий элемент выполнен с возможностью перемещения стента в дистальном направлении из наружного футляра на протяжении по меньшей мере двух периодов зацепления стента стент-зацепляющим элементом. Каждый период зацепления выполнен с возможностью перемещения стента в дистальном направлении без механического сопутствующего возврата наружного футляра. Каждый период зацепления отделен периодом без зацепления стента стент-зацепляющим элементом, в котором стент не приводится в движение в дистальном направлении. 20 з.п. ф-лы, 16 ил.

УСТРОЙСТВО ДОСТАВКИ ЭНДОВАСКУЛЯРНОГО ПРОТЕЗА

Изобретение относится к области медицинской техники, и в частности, к устройству доставки эндоваскулярного протеза для лечения аневризмы у пациента. Устройство доставки эндоваскулярного протеза содержит трубчатый элемент, имеющий дистальный участок, проксимальный участок и участок для соединения с эндоваскулярным протезом, прикрепленный к дистальному участку. Дистальный участок имеет пористую поверхность, образованную множеством круговых колец, соседние пары которых соединены друг с другом по меньшей мере одной продольной распоркой. Пористая поверхность имеет градиент окружной ширины продольных распорок между продольными распорками, прикрепленными с противоположных сторон одного кругового кольца, уменьшающийся в направлении от проксимального участка к дистальному участку. Каждое круговое кольцо содержит чередующиеся вершины и впадины. По меньшей мере одна продольная распорка соединяет первую впадину на первом круговом кольце со второй впадиной на втором круговом кольце, прилегающем к первому ...

УСТРОЙСТВО ДЛЯ ЛЕЧЕНИЯ СОСУДИСТОЙ СЕТИ И ПРОТОКОВ ОРГАНИЗМА

Изобретение относится к области медицины, а именно к устройствам для лечения сосудистой сети и других протоков, которые могут быть использованы для лечения закупорки сосудистой сети, а также аневризм, образующихся в головном мозге. Устройство для лечения сосудистой сети и протоков организма содержит удлиненный саморасширяющийся элемент, выполненный с возможностью расширения из первого положения подачи во второе положение установки. В первом положении подачи удлиненный саморасширяющийся элемент находится в нерасширенном положении и имеет первый диаметр. Во втором положении расширяющийся элемент находится в расширенном по радиусу положении и имеет второй диаметр, превышающий первый диаметр. Удлиненный саморасширяющийся элемент содержит множество ячеистых структур. Удлиненный саморасширяющийся элемент имеет проксимальный оконечный участок с проксимальным концом и цилиндрический участок основного корпуса. Ячеистые структуры на цилиндрическом участке основного корпуса проходят по окружности ...

СИСТЕМА ДОСТАВКИ САМОРАСШИРЯЮЩЕГОСЯ СТЕНТА

Группа изобретений относится к медицинской технике, а именно к системе доставки саморасширяющегося стента, которая позволяет повторно сжимать стент в катетер для доставки, одновременно позволяя стенту при необходимости изменять длины и вращаться внутри катетера для доставки. Система доставки саморасширяющегося стента содержит внутренний элемент, наружный элемент, толкатель, ползунок, корпус, собранный на толкателе, и пружинный элемент, расположенный в корпусе. Внутренний элемент размещен соосно с наружным элементом. Внутренний элемент и наружный элемент включают в себя дистальный и проксимальный концы. Толкатель расположен на проксимальном конце внутреннего элемента и соединен с внутренним элементом. Ползунок размещен соосно с внутренним элементом и расположен внутри и в контакте с внутренним диаметром стента. Ползунок имеет зацепляющий элемент, выполненный с возможностью сопряжения и фиксации с соответствующими зацепляющими элементами на саморасширяющемся стенте. До своего размещения стент ...

ИНСТРУМЕНТ УСТАНОВКИ СТЕНТА

Группа изобретений относится к медицинской технике, а именно к инструменту (аппликатору) для установки стента, т.е. к системе установки для установки стента в тело пациента, и к головке катетера для использования в указанной системе. Система установки стента (S) в тело пациента содержит гибкую трубку (3) катетера, имеющую проксимальный конец и дистальный конец и служащую для доставки стента (S) к заданной точке в сосуде тела, и наконечник (1) катетера, имеющий продольную ось и закрепленный на дистальном конце трубки (3) катетера. В наконечнике (1) катетера выполнена камера (150) для стента (S). В наконечнике катетера имеется первая камера (20, 22) давления. В трубке (3) катетера выполнен первый канал (31) для текучей среды, проходящий в трубке катетера от ее проксимального конца до первой камеры (20, 22) давления в наконечнике (1) катетера. Система выполнена с возможностью увеличения объема первой камеры (20, 22) давления путем подачи в нее первой текучей среды из первого канала (31) для ...

Стент повышенной гибкости

Изобретение относится к медицинской технике, а именно к стенту повышенной гибкости, установленному в люминальную структуру живого организма для расширения просвета. Гибкий стент содержит элементы с волнообразной структурой, имеющие волнообразную структуру и расположенные бок о бок в осевом направлении, и спиральные элементы, расположенные между смежными элементами с волнообразной структурой и проходящие по спирали вокруг оси. Все вершины на противоположных сторонах смежных элементов с волнообразной структурой соединены посредством спиральных элементов. При этом если смотреть в радиальном направлении, перпендикулярном осевому направлению, окружное направление элементов с волнообразной структурой наклонено относительно радиального направления, и направление намотки одного из спиральных элементов, проходящего в осевом направлении на одной стороне элементов с волнообразной структурой, и направление намотки одного другого из спиральных элементов, проходящего в осевом направлении на другой стороне ...

Расширяемый медицинский стент и способ его внедрения

Изобретение относится к медицинской технике, а именно к расширяемым внутрипросветным графтам (стентам), предназначенным для установки в канале или протоке организма, и применяемым, в частности, для восстановления кровеносных сосудов, суженных или окклюзированных вследствие заболевания. Средство доставки расширяемого медицинского стента, состоящего из каркаса, представляющего собой полый цилиндр со структурным элементом каркаса в виде вогнутого шестиугольника, представляет собой две гибкие проволоки, размещённые соосно стенту, одна из которых закреплена к его дистальной кромке, а другая - к проксимальной. Каждая из проволок закреплена к соответствующей кромке стента с помощью замочного соединения, выполненного в виде полого цилиндрического стакана, имеющего одно основание и прорези на боковой поверхности, и ламели, совмещаемой с прорезями в стакане. Ламель прикреплена к кромке стента. Стакан прикреплен к проволоке с его внешней стороны перпендикулярно основанию. Способ внедрения вышеупомянутого ...

УСТРОЙСТВО И СПОСОБ ДЛЯ БЕЗОПАСНОГО ПОЗИЦИОНИРОВАНИЯ КОРОНАРНОГО СТЕНТА В КОРОНАРНЫХ АРТЕРИЯХ

ОДНОСТУПЕНЧАТОЕ РАСШИРЕНИЕ СПЛАВОВ С ПАМЯТЬЮ ФОРМЫ

... 1. Способ образования изделия из сплава с памятью формы (SMA), содержащий:а. создание изделия из сплава SMA, имеющего исходную форму, при этом сплав SMA имеет температуру установления формы;b. нагрев изделия из сплава SMA до примерной температуры установления формы;с. деформирование изделия из сплава SMA при его примерной температуре установления формы до окончательной формы иd. охлаждение сжатого изделия из сплава SMA, по существу удерживающего вышеуказанную окончательную форму.2. Способ по п. 1, в котором после деформирования вышеуказанного изделия из сплава SMA на этапе с) осуществляют выдержку вышеуказанного деформированного изделия из сплава SMA при его примерной температуре установления формы.3. Способ по п. 1, в котором вышеуказанный сплав SMA является нитинолом.4. Способ по п. 3, в котором вышеуказанная температура установления формы составляет примерно от 300 примерно до 650°С.5. Способ по п. 1, в котором деформирование изделия из вышеуказанного сплава SMA до вышеуказанной окончательной ...

СИСТЕМА ДОСТАВКИ ПОВТОРНО СЖИМАЕМОГО СТЕНТА

... 1. Система доставки саморасширяющегося стента, содержащая:внутренний элемент, размещенный соосно с наружным элементом, причем указанный внутренний элемент и указанный наружный элемент включают в себя дистальный и проксимальный конец;толкатель, расположенный на проксимальном конце указанного внутреннего элемента и соединенный с указанным внутренним элементом;ползунок, размещенный соосно с указанным внутренним элементом и расположенный внутри и в контакте с внутренним диаметром указанного стента;корпус, собранный на толкателе; ипружинный элемент, расположенный в указанном корпусе,причем до своего размещения стент сжат во внутреннем диаметре указанного наружного элемента,причем после частичного своего размещения стент может быть повторно сжат наружной оболочкой и корпусом, перемещающимся в проксимальном направлении для сжатия пружинного элемента для удержания внутреннего элемента с натяжением, ипричем в процессе размещения стента указанный ползунок может вращаться вокруг указанного внутреннего ...

СИСТЕМА ДОСТАВКИ ПОВТОРНО СЖИМАЕМОГО СТЕНТА

УСТРОЙСТВО ДЛЯ ПРОДВИЖЕНИЯ СТЕНТОВ

... 1. Устройство, содержащее:наружный футляр; истент-зацепляющий элемент, расположенный внутри наружного футляра;в котором стент выполнен с возможностью перемещения в дистальном направлении из наружного футляра на протяжении, по меньшей мере, двух периодов зацепления стента стент-зацепляющим элементом, при этом каждый период зацепления выполнен с возможностью приведения стента в перемещение в дистальном направлении без механического сопутствующего возврата наружного футляра, причем каждый период зацепления отделен периодом без зацепления стента стент-зацепляющим элементом, в котором стент не приводится в движение в дистальном направлении.2. Устройство по п.1, дополнительно содержащее стент, расположенный внутри наружного футляра.3. Устройство по п.2, в котором стент имеет дистальный конец, проксимальный конец и полость, простирающуюся между дистальным концом и проксимальным концом, при этом стент-зацепляющий элемент расположен, по меньшей мере, частично внутри полости стента.4. Устройство ...

РУКОЯТКА ДЛЯ АКТИВАЦИИ В ФИКСИРОВАННОЙ ПОСЛЕДОВАТЕЛЬНОСТИ

... 1. Рукоятка для активации в фиксированной последовательности, содержащая:а) первый элемент, выполненный с возможностью извлечения и прикрепленный к первой протяженной линии для взаимодействия с удаленным размещаемым устройством;б) второй элемент, выполненный с возможностью извлечения и содержащий вращающуюся часть, второй элемент, по меньшей мере, частично закрыт указанным первым элементом, выполненным с возможностью извлечения, и прикреплен ко второй протяженной линии для взаимодействия с удаленным размещаемым устройством;в) третий элемент, который, по меньшей мере, частично закрыт указанным вторым элементом, выполненным с возможностью извлечения, и прикреплен к третьей протяженной линии для взаимодействия с удаленным размещаемым устройством.2. Рукоятка по п.1, в которой наличие первого элемента предотвращает извлечение второго элемента.3. Рукоятка по п.1, в которой наличие второго элемента предотвращает извлечение третьего элемента.4. Рукоятка по п.1, в которой третий элемент расположен ...

СПОСОБЫ ДЛЯ СКРЕПЛЕНИЯ КОНЦОВ НИТЕЙ И ПОЛУЧЕННЫЕ В РЕЗУЛЬТАТЕ УСТРОЙСТВА

... 1. Способ формирования саморасширяющегося стента, содержащий следующие стадии:образование первого изгиба в каждой из множества нитей, каждая из которых включает в себя часть нити на обоих сторонах первого изгиба нити, при этом каждая часть нити имеет конец;сплетание частей нити, при этом каждый конец частей нити расположен вблизи первого конца нити после сплетания частей нити;термообработка множества нитей в течение первого периода времени после сплетания частей нити;образование второго изгиба каждой из множества нитей.2. Способ по п.1, дополнительно содержащий термообработку множества нитей в течение второго периода времени после формирования вторых изгибов нитей.3. Способ по п.1, дополнительно содержащий обратное заплетание некоторых частей нити после формирования вторых изгибов нитей, которое содержит их прохождение, по меньшей мере, двумя пересечениями нити от первого конца стента.4. Способ по п.1, дополнительно содержащий обрезку частей нити.5. Способ по п.1, в котором множество нитей ...

СИСТЕМЫ И СПОСОБЫ ПОЛУЧЕНИЯ И ПРИМЕНЕНИЯ РАСШИРИТЕЛЬНОГО КОЛЬЦА

СИСТЕМЫ И СПОСОБЫ ДОСТАВКИ МЕДИЦИНСКОГО УСТРОЙСТВА

... 1. Система доставки медицинского устройства, содержащая:катетер;расширяемое устройство, расположенное на конце катетера;муфту, расположенную вокруг расширяемого устройства и имеющую первую конфигурацию для удержания расширяемого устройства в пределах первого внешнего окружного размера и вторую конфигурацию, позволяющую расширяемому устройству расширяться до второго внешнего окружного размера, который больше первого внешнего окружного размера;расцепляемую нить, проходящую через муфту и удерживающую муфту в первой конфигурации, которая может извлекаться, обеспечивая перевод муфты во вторую конфигурацию; ишнурок, образующий разъемное взаимное соединение между катетером и устройством, при этом шнурок имеет петлю, через которую пропускается расцепляемая нить, и поддерживает взаимное соединение между катетером и расширяемым устройством после извлечения расцепляемой нити из муфты.2. Система по п. 1, в которой шнурок проходит через отверстие в расширяемом устройстве, образуя петлю, через которую ...

Устройство для эндопротезирования стенозов пищевода

Изобретение относится к хирургии, в частности может использоваться для эндоп- ротезирования доброкачественных и злокачественных стенозов пищевода и пищеводных анастомозов. Цель изобретения - повышение надежности фиксации протеза в области сужения пищевода при уменьшении травматизации окружающей ткани Устройство для эндопротезирования стенозов пищевода содержит эластичную трубку 1 с прикрепленными лепестками 2. которые соединены с фиксирующей манжетой 3. Трубка дополнительно снабжена на проксимальном конце эластичными дугообразными лепестками 2 с прикрепленной на них фиксирующей манжетой 3, причем фиксирующая манжета выполнена в виде кольца с возможностью перемещения и выворачивания относительно трубки 1 с лепестками 2 3 ил Ё а CJ ел Ч) 00 о Фиг. 1 ...

Gerät zur Positionierung einer Emboliespule

VORRICHTUNG ZUR BEHANDLUNG VON BLUTGEFÄSSEN

HILFSMITTEL ZUR AUFRECHTERHALTUNG DES INNEREN DURCHMESSERS DER KAVITÄT EINES TUBULÄREN ORGANS.

VORRICHTUNG, PRODUKT UND VERWENDUNG BETREFFEND DIE INTRALUMINALE PHOTOTHERMOFORMGEBUNG

STENTZUFÜHRVORRICHTUNG UND -VERFAHREN

EINSETZEN EINER PROTHESE

STENT MIT KOLLAGEN

Kathetersystem mit integrierter Doppelfunktion zur Ballon-Angioplastik und zum Anbringen eines Stents

Katheter zum Anbringen eines Primärstent

ENDOPROTHESE FÜR GEFÄSSGABELUNG

SYSTEM ZUM EINFÜHREN EINER GEFÄSSPROTHESE

SYSTEM ZUM EINSETZEN EINER ENDOLUMINALEN VORRICHTUNG

Stripper aid for helical implants on guide wire - has stop ring at guide tube front end, and wire distal end coupler connected to second slide sleeve

A stripper surrounds the guide wire, and there is a guide tube (4), whose front end contains a cap (5) with a bore for the passage of the stripper and guide wire. On the guide tube is fitted a slide sleeve (7) with a coupler for the wire distal end forming a nipple. A stop ring and the stripper distal end coupler complete the design. The stop ring is at the front end of the guide tube, and the second coupler is connected to a second slide sleeve between the stop ring and the first slide sleeve. The couplers for the guide wire and stripper respectively are fitted in the guide tube, while the slide sleeves surround the guide tube. USE/ADVANTAGE - For vessel closing helical implants in interventional radiology, with independent motion of stripper and guide wire.

Device for use in arrangement for feeding medicinal functional element, particularly implant, into body hollow organ, has supply line, which is inserted into body hollow organ, guide unit and retainer

The device has a supply line (11), which is inserted into the body hollow organ, a guide unit (12) and a retainer (13), which is connected with the guide unit. The retainer is connected with a functional element (10) such that the functional element is moved by an actuation of the guide unit in proximal and distal direction. The retainer has a gripping element (14), which is moved in radial direction and transferred into an open position by the radial movement from a closing position. An independent claim is also included for an arrangement has a counterpart.

PROTHESE AUS GEFLOCHTENEM VERBUNDMATERIAL

VORRICHTUNG ZUM EINFÜHREN EINER GEFÄSSPROTHESE, DIE DURCH ZURÜCKZIEHEN EINES ROHRES DIESE PROTHESE FREIGIBT

GEFÄSSPROTHESE

Stent-Graft mit verbesserter Befestigung in einem Körpergefäss

Device for removing protective sleeve from a self expanding stent

An arrangement for removing the protective sleeve (13) of a self expanding stent (12) which can be implanted in the body, comprises a longitudinally movable and/or rotatable element (17) which can be connected to the sleeve by a cord or string. A mechanical or electrical energy storage unit is used to move the element.

MODULARE STENTENDOPROTHESE

VORRICHTUNG ZUM ANBRINGEN EINES IN EINEM BEUTEL BEEFINDLICHEN STENTS AN EINEN KATHETER

Instrument for widening stenosis in body lumen

The applicator (3) and the endoprosthesis are arranged at least partly axially overlapping and the applicator is fitted radially between the sluice (2) and the endoprosthesis (1). The applicator at its front end, partic. over the length over which it engages over the endoprosthesis, is axially split. At the front end of applicator are tabs (4) which are sepd. axially by slots.At least on the rearward face side of the endoprosthesis is a counter holder. The sluice is axially movable in relation to the applicator and the counter holder. An axially effective releasable blocking element (9) is provided for the sluice and applicator.

UNIDIREKTIONALES ZUFUHRSYSTEM

Stent delivery system used for detaining self extension type stent intra corporeally, has stent which is loaded to extend to inner cylinder

A stent (60) is loaded to extend to an inner cylinder (24). The inner cylinder moves forward or backward to an outer cylinder (20). An outermost tube (28) is fixed to a relative position on the endoscope.

Katheter-Stent-Vorrichtung zur Implantation von selbst expandierenden Stents mittels hydraulischer Kraft

Selbst expandierende Stents werden zur Platzierung des Stents vom in den Patienten eingeführten Katheter durch ein Druckmedium aus dem Katheterlumen in das zu behandelnde Hohlorgan wie z.B. ein Blutgefäß herausgeschoben. Der Druck wirkt entweder direkt auf den Stent oder auf Kolben, die durch den von proximal eingebrachten Druck den Stent aus dem Katheter herausbefördern.

Stenteinführsystem zur Verbesserung der Positioniergenauigkeit für einen selbstexpandierbaren Stent

Entfernbare, im wesentlichen zylindrische Implantate

Entfernbare, im Wesentlichen zylindrische Implantate, die von einem oder mehreren elastische, dünnen, drahtförmigen Gebilden umschlungen sind, wobei die einen oder mehreren, elastischen, drahtförmigen Gebilde an mindestens einem Ende eine Fangvorrichtung (3a, 3b) aufweisen, dadurch gekennzeichnet, dass die im Wesentlichen zylindrischen Implantate durch Zug an den Fangvorrichtungen zumindest teilweise im Durchmesser reduzierbar sind und dass die im Wesentlichen zylindrischen Implantate ein- oder mehrfach in einer oder mehreren Höhen von dem einen oder den mehreren elastischen, dünnen, drahtförmigen Gebilden (2a, 2b) außenseitig umschlungen sind, wobei wenigstens eine Schleife des oder der drahtförmigen Gebilde (2a, 2b) dafür vorgesehen ist, bei Zug an den Fangvorrichtungen in ihrem Durchmesser verkleinert zu werden, wobei die Schleifen des einen oder der mehreren elastischen, dünnen, drahtförmigen Gebilde (2a, 2b) frei um das Implantat verlaufen und wobei wenigstens ein Ende (4a, 4b) des ...

Retrieval catheter

Introducer assembly and dilator tip therefor

A non-occlusive dilation and deployment catheter device

Catheter and stent used therewith

A temporary "sten" for use in conjunction with a balloon-type or other catheter, in order to shore-up tissue within e.g. an artery, comprises a multi-coil member 9a etc. which is contained in a substantially linear stressed condition within the catheter for transport to the diseased area and which when released from the catheter adopts an expanded coiled configuration to hold the damaged tissue in place whilst at the same time allowing blood flow through the artery. The stent may consist of stainless steel wire 8 which at its distal end comprises a plurality of coils 9a, 9b, 9c running parallel to one another. The distal ends of these coils may terminate together at 11 to form a lead wire for the stent. ...

Implantable graft assembly and aneurysm treatment

Device for application in blood vessels or other difficultly accessible locations

PCT No. PCT/SE82/00283 Sec. 371 Date May 5, 1983 Sec. 102(e) Date May 5, 1983 PCT Filed Sep. 15, 1982 PCT Pub. No. WO83/00997 PCT Pub. Date Mar. 31, 1983.Device comprising a helically shaped spiral spring and means for bringing the spring to expand from a first state of a certain diameter to a second state of larger diameter and vice versa, characterized thereby that said means are arranged to rotate the ends of the spring relative to each other with maintained length of the spring so that the transition from said first state to said second state takes place by reducing the number of spring turns within said length and the corresponding increase of the pitch of the spring, or to supply to a given length of the spring further spring material at at least one end of the said length of the spring so that the transition from said first state to said second state takes place independent of pitch and number of spring turns within the said length; and a method for transluminal implantation of an ...

Machine for manufacturing graft-stents

A ciliated stent-like system

Rectractable catheter

Device and method for safely positioning a coronary stent in the coronary arteries

Device and method for safely positioning a coronary stent in the coronary arteries

Device and method for securely positioning a coronary stent inside coronary arteries

Stent graft

IMPROVED STENT FOR STENT GRAFT

EINRICHTUNG ZUR BEHANDLUNG VON BLUTGEFAESSEN OD.DGL.

PCT No. PCT/SE82/00283 Sec. 371 Date May 5, 1983 Sec. 102(e) Date May 5, 1983 PCT Filed Sep. 15, 1982 PCT Pub. No. WO83/00997 PCT Pub. Date Mar. 31, 1983.Device comprising a helically shaped spiral spring and means for bringing the spring to expand from a first state of a certain diameter to a second state of larger diameter and vice versa, characterized thereby that said means are arranged to rotate the ends of the spring relative to each other with maintained length of the spring so that the transition from said first state to said second state takes place by reducing the number of spring turns within said length and the corresponding increase of the pitch of the spring, or to supply to a given length of the spring further spring material at at least one end of the said length of the spring so that the transition from said first state to said second state takes place independent of pitch and number of spring turns within the said length; and a method for transluminal implantation of an ...

STENT GRAFT WITH FOLDED FABRIC

DEVICE TO THE DELIVERY OF THERAPEUTIC ACTIVE SUBSTANCES

EQUIPMENT TO THE FILE OF ROLLED PROSTHESES

ARRANGEMENT FOR THE REDUCTION OF THE ILLUSTRATION RADIATION DOSE

INTRODUCTION CUTLERY WITH SPERRGRIFF FOR MEDICAL INSTRUMENT

SYSTEM FOR THE POSITIONING OF A STENT GRAFTS

CONTAINER SUPPORTING INTRODUCTION SYSTEM WITH VERB LURING DEVICE

PROCEDURE FOR THE PRODUCTION OF MEDICAL DEVICES; INTRAVASKULÄROKKLUSIONSVORRICHTUNG

ENDOLUMINALE PROSTHESIS WITH CONNECTABLE MODULES

STENTVORRICHTUNGEN WITH SEPARABLE PROXIMAL ONES AND DISTAL WIRES

INTRODUCTION ASSISTANCE FOR A MEDICAL DEVICE WITH ANDOCKANORDNUNG

CATHETER SHANK WITH SEPARABLE WALL

CATHETER FOR THE TREATMENT OF INTIMALER DISSEKTION AFTER THE ARRANGEMENT OF A STENTS

IMPLANT AND RELEASE SYSTEM WITH SEVERAL MARKER BOLTING DEVICES

SHOP AND ATTACHMENT OF SELFEXPAND-CASH STENTS

REGULATION PROCEDURE FOR THE ELUIERUNG OF THERAPEUTIC ACTIVE SUBSTANCES

FILE SYSTEM FOR MEDICAL DEVICES

DEVICE FOR THE TREATMENT OF THE THORAX AORTA

BREAST INTRODUCTION DEVICE

CONTAINER PROSTHESES WITH IMPROVED FLEXIBILITY AND A DELIVERY CONFIGURATION WITH INTERLOCKED CELLS

ENDOLUMINALE PROSTHESIS

WITH A RETAINING MATERIAL MISTAKE SEPARABLE ONE MEDICAL DEVICES

TO STENT ABGABESYSTEM ONE, CONTROLLED DELIVERY OF A STENTS PERMITS

Container prosthesis

IMPORTER FOR ENDOVASKULÄRE IMPLANTS AND STENTS

SYSTEM FOR THE ATTACHMENT OF A STENTS

PROCEDURE FOR THE EMPLOYMENT OF A MEDICINE PRODUCT INTO A RELEASE SYSTEM

DEVICE TO THE REPAIR OF AORTENANEURYSMEN IN THE THORAX

ENDOVASKULARES EQUIPMENT

THORAX INTRODUCTION DEVICE

SYSTEMS AND PROCEDURES FOR THE ELECTRICALSURGICAL FABRIC TREATMENT IN PRESENCE ELECTRICAL OF LEADING LIQUIDS

STENT

PROCEDURE FOR THE ASSEMBLY OF A STENTKATHETERS

PROSTHESIS FOR THE REPAIR A THORAX ANEURYSM

STENT

TENSION REGULATION FOR STENTEINFÜHRSYSTEM

ENDOLUMINALE SIDE BRANCH PROSTHESIS

Проводник для установки мочеточникового стента с фиксаторами в виде "свиных хвостов"

Предлагаемая полезная модель относится к области медицины - урологии, а в частности к конструкции проводника для установки мочеточникового стента с фиксаторами в виде «свиных хвостов» при лапароскопических и открытых операциях на верхних мочевыводящих путях.Предлагаемая полезная модель упрощает доставку стента с одновременной его точной установкой при лапароскопических операциях на верхних мочевыводящих путях при проведении стента как в дистальном, так и в проксимальном направлениях с последующим облегченным удалением проводника.Технический результат в предлагаемой полезной модели достигают созданием проводника для установки мочеточникового стента с фиксаторами в виде «свиных хвостов», который согласно изобретению содержит мягкую центральную часть, выполненную в виде нити, и жесткие дистальные концы, причем длина каждого жесткого дистального конца больше длины окружности фиксатора стента, а мягкая центральная часть длиннее расстояния между фиксаторами стента, при этом часть мягкой центральной части выполнена с возможностью расположения с наружной стороны прямой части трубки стента, жесткие дистальные концы выполнены с возможностью расправления фиксаторов стента и имеют диаметр меньше диаметра отверстий на трубке стента. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 187 018 U1 (51) МПК A61F 2/82 (2013.01) A61F 2/95 (2013.01) A61M 25/01 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК A61F 2/82 (2018.08); A61F 2/95 (2018.08); A61M 25/01 (2018.08) (21)(22) Заявка: 2018131242, 30.08.2018 (24) Дата начала отсчета срока действия патента: Дата регистрации: 13.02.2019 (45) Опубликовано: 13.02.2019 Бюл. № 5 Адрес для переписки: 105043, Москва, ул. Первомайская, 66, кв. 135, Широковой Т.К. (73) Патентообладатель(и): Андреев Юрий Германович (RU), Рафф Леонид Семенович (RU), Шибаев Андрей Николаевич (RU) (56) Список документов, цитированных в отчете о поиске: RU 2661093 C1, 11.07.2018. RU U 1 1 8 7 0 1 8 R U (54) Проводник ...

Particle Embedded Polymer Stent and Method of Manufacture

A particle embedded polymer stent and method of manufacture, which includes a stent delivery system having a catheter; a balloon operably attached to the catheter; and a polymer stent disposed on the balloon, the stent comprising struts interconnected to form a tubular body. Each of the struts includes in cross section a drug-free core region; and a drug region surrounding and immediately adjacent to the core region, the drug region including drug particles. The drug-free core region and the drug region are made of a single polymer, the single polymer having a drug-safe softening temperature.

Control System for a Stent Delivery System

A control system for controlling movement of a stent delivery system, a stent delivery system and a method for controlling movement of a stent delivery system are provided. The control system includes a housing having a chamber formed therein, a first drive at least partially positioned within the housing and operably connected to the first shaft of the delivery system and a second drive at least partially positioned within the housing and operably connected to the second shaft. The control system also includes a pressure controller operably connected to the housing and configured to change the pressure within the chamber. The first drive and the second drives are movable in response to the pressure change within the chamber and movement of the second drive relative to the first drive causes the second shaft to move relative to the first shaft to expand or constrain a stent operably connected thereto.

Stent delivery system

A stent delivery system includes: a distal-side tube; a proximal-side tube; a tubular member which contains a stent; a wire which has one end fixed to the tubular member; and an operating section which has a wire winding mechanism and a wire winding amount restriction mechanism for restricting the length of wire which is pulled. The operating section has an operating rotary roller; a winding shaft section and driving gear which are provided coaxially and integrally with the roller; and a driven gear which is intermittently rotated by the driving gear. The driving gear and the driven gear have the stopper function by which rotation of the driving gear is stopped after the driving gear is rotated a predetermined amount.

Controlled release and recapture prosthetic deployment device

A delivery device for deploying and resheathing an expandable prosthesis and method of use thereof are described. The delivery device includes a fixed outer sheath and a pusher member that is configured for retracting in a proximal direction and resheathing the prosthesis. The device includes two plates engaging the pusher member, with a first plate configured engage the pusher member to prevent proximal movement and the other plate configured to engage the pusher member for distal movement.

Method of reshaping a ventricle

Methods for restoring the conical shape of a dilated heart ventricle, or at least reshaping the ventricle to a more conical shape to counter the effects of dilation, thereby improving pumping efficiency. In an exemplary embodiment, a reshaping apparatus comprises an implantable body that can be delivered to a dilated left ventricle via the patient's vasculature in a minimally-invasive procedure. When deployed inside the left ventricle, the body is adapted to apply a longitudinal (downward) force against the inner surface of the left ventricle that causes the ventricle to distend or elongate downwardly relative to the base of the heart so as to at least partially restore the conical shape of the heart. In other embodiments, one or more tension members can be secured to heart tissue inside a heart chamber or on the outside of the heart and placed in tension to reshape the geometry of the heart.

Forced deployment sequence handle assembly with independent actuating mechanism

A handle assembly for use in the deployment of a medical device via a plurality of deployment lines that extend through a catheter. The handle assembly includes a plurality of removable members for deployment or actuation of the medical device. The handle assembly also includes an actuating mechanism for displacing a wire extending through the catheter for actuating the medical device independently of the plurality of removable members.

Graft Systems Having Filling Structures Supported by Scaffolds and Methods for Their Use

Aneurysms are treated by filling at least one double-walled filling structure with a curable medium within the aneurysm. The filling structures may be delivered over balloon deployment mechanisms in order to shape and open tubular lumens therethrough. Scaffolds are placed into the tubular lumens in order to help maintain the shape, anchor the filling structures in place, and provide improved blood flow transition into and out of the tubular lumens.

Medical devices and delivery systems for delivering medical devices

Medical devices and delivery systems for delivering medical devices to a target location within a subject. In some embodiments the medical devices can be locked in a fully deployed and locked configuration. In some embodiments the delivery systems are configured with a single actuator to control the movement of multiple components of the delivery system. In some embodiments the actuator controls the independent and dependent movement of multiple components of the delivery system.

Single Handed Deployment Handle

The present invention is directed to an improved delivery system to deliver and deploy a prosthesis in a body lumen, and methods of use thereof. The improved delivery system allows for operation of the delivery system with one hand while maintaining accuracy in delivery and deployment of the prosthesis. An exemplary embodiment of the delivery system includes a first sheath control on a housing so as to be accessible from the exterior of the housing, wherein the first sheath control is operatively engaged with the sheath and controls movement of the sheath axially proximally with respect to the housing, thereby releasing at least a portion of the prosthesis.

Prosthesis delivery systems and methods

Apparatus and method deliver a prosthesis into a hollow body organ or blood vessel. The systems and methods make use of a catheter. A carrier on the distal end of the catheter is sized and configured to carry the prosthesis. A release mechanism and an enclosure mechanism on the distal end are operable to retain and enclose the prosthesis on the carrier. The release mechanism and the enclosure mechanism are also operable to selectively expose and release the prosthesis from the carrier for deployment in the hollow body organ or blood vessel.

Expandable tip assembly for thrombus management

Systems, methods, and devices for the treatment of acute ischemic stroke that provide immediate blood flow restoration to a vessel occluded by a clot and, after reestablishing blood flow, address the clot itself. Immediate blood flow restoration advantageously can facilitate natural lysis of the clot and also can reduce or obviate the concern for distal embolization due to fragmentation of the clot. Several embodiments of the invention provide for progressive, or modular, treatment based upon the nature of the clot. For example, the progressive treatment can include immediate restoration of blood flow, in-situ clot management, and/or clot removal depending on the particular circumstances of the treatment. The in-situ clot management can include, for example, lysis, maceration, and/or removal.

Stentless Support Structure

A stentless support structure capable of being at least partly assembled in situ. The support structure comprises a braided tube that is very flexible and, when elongated, becomes very long and very small in diameter, thereby being capable of placement within a small diameter catheter. The support structure is preferably constructed of one or more thin strands of a super-elastic or shape memory material such as Nitinol. When released from the catheter, the support structure folds itself into a longitudinally compact configuration. The support structure thus gains significant strength as the number of folds increase. This radial strength obviates the need for a support stent. The support structure may include attachment points for a prosthetic valve.

Material delivery system

A method for injecting a therapeutic agent into a target tissue, the method comprising: (a) providing an expandable member; (b) positioning said expandable member in proximity to the target tissue; (c) Introducing the therapeutic agent into the expandable member until a desired pressure is achieved; and (d) creating a plurality of small apertures in the expandable member.

Stent with support braces

A stent includes expandable rings formed from a plurality of interconnected struts. A plurality of bridges couple adjacent rings together. The bridges are connected to adjacent rings at first and second connection points, and a first brace element is disposed therebetween. The first connection point is circumferentially offset relative to the second connection point so that the bridge is transverse to the longitudinal axis of the stent. The first brace element of one bridge engages an adjacent bridge or a brace element of the adjacent bridge when the corresponding adjacent rings are in the contracted configuration thereby providing additional support and rigidity to the stent to lessen buckling of the stent during loading onto a delivery catheter or during deployment therefrom.

Device for collapsing and loading a heart valve into a minimally invasive delivery system

A device is provided for collapsing a stented bioprosthetic valve, including first section and second sections, each spanning between first and second ends of the device. The second section of the device is associated with the first section to at least partially enclose an internal cavity formed by the first and second sections, the internal cavity tapering from an open insertion portion at a first end of the device to an open exit portion at a second end of the device. The insertion portion has a larger dimension than the exit portion. When the first section and second section are substantially enclosing the internal cavity, a stented bioprosthetic valve may be inserted into the insertion portion and collapsed as it is moved toward and through the exit portion. The valve may then be loaded on an apparatus for insertion into the body.

Hydrogel jacketed stents

Hydrogel jacketed stents provide the ability to fill in the stent frame in vivo to at least partially cover the interior of the surface of the stent following deployment while having the convenience of attaching the jacket to the exterior of the stent. The hydrogel can be pleated and/or folder over the exterior of the stent to provide for extension of the stent without damaging the hydrogel. The hydrogel sheet can be secured at one or more points along the circumference to associate the sheet of hydrogel with the exterior surface of the stent frame. The stent can be conveniently delivered using similar technology as conventional stents if desired. The hydrogel can provide for drug delivery if desired.

Method To Minimize Chain Scission And Monomer Generation In Processing of Poly(L-Lactide) Stent

Methods of fabricating an implantable medical devices such as stents made from biodegradable polymers are disclosed that reduce or minimize chain scission and monomer generation during processing steps. The method includes processing a poly(L-lactide) resin having an number average molecular weight between 150 to 200 kD in an extruder in a molten state. A poly(L-lactide) tube is formed from the processed resin and a stent is fabricated from the tube. The number average molecular weight of the poly(L-lactide) of the stent after sterilization is 70 to 100 kD.

Prosethetic Haert Valves, Scaffolding Structures, and Systems and Methods for Implantation of Same

Prosthetic valves and their component parts are described, as are prosthetic valve delivery devices and methods for their use. The prosthetic valves are particularly adapted for use in percutaneous aortic valve replacement procedures. The delivery devices are particularly adapted for use in minimally invasive surgical procedures.

Stent delivery system

A stent delivery system includes a distal-side tube, a proximal-side tube, a fixing tube, a stent containing tubular member, a stent in the stent containing tubular member, and a pulling wire for moving the stent containing tubular member to the proximal side. The distal-side tube includes a distal-side priming slit provided in a side wall in proximity to a stent proximal end lock section and a proximal-side priming slit provided in a side wall on the proximal side of the distal-side tube. The slits are opened by injecting liquid, with the distal opening or the rear end opening of a guide wire lumen of the distal-side tube closed.

Transluminal delivery system

There is disclosed herein a transluminal delivery system for a self-expanding luminal prosthesis, the system comprising an inner catheter component ( 30 ) and a retractable sheath ( 12 ) to surround the component thereby to define an annular space to receive the prosthesis ( 10 ), the component exhibiting an anti-sliding component, for abutting a luminal surface portion of the prosthesis ( 10 ) to restrain the prosthesis from sliding with the sheath ( 12 ), and relative to the inner catheter ( 30 ), while the sheath retracts relative to the prosthesis to release the prosthesis progressively into the target bodily lumen characterised in that the anti-sliding component is or includes at least one sleeve ( 36, 50, 66, 76 ) having a length direction parallel to the longitudinal axis of the annular space and having at least one bound portion ( 33, 52, 64, 65, 74 ) of its length that is not free to slide on the inner catheter, and at least one unbound portion of its length with a capability to slide axially on the inner catheter ( 30 ) and thereby to exhibit a radial swelling capability, to deliver an increase in the radial thickness of the sleeve ( 36, 50, 66, 76 ) while the sheath retracts. Associated methods are also disclosed.

Stent delivery system

Stent delivery systems, clip members for use with stent delivery systems, and methods for making and using the same are disclosed. An example stent delivery system may include an inner shaft having a distal region. A stent may be disposed about the distal region. A deployment sheath may be slidably disposed about the inner shaft. A handle may be coupled to the inner shaft. The handle may include a clip member having a first holding portion and a second holding portion. The inner shaft may extend through the first holding portion and the second holding portion. A holding cuff may be thermally bonded to the inner shaft. The holding cuff may be positioned between the first holding portion and the second holding portion.

Loading basket for a stent delivery system

A loading basket is secured at its proximal end to a portion of a delivery device. The stent engages with the interior of the stent basket when loaded onto the delivery device to prevent shifting or movement of the stent during delivery of the stent to a desired location within the bodily lumen. In at least one embodiment, the loading basket has a proximal end, a distal end, and a braided surface. The loading basket comprises a proximal end portion, a proximal transition portion, a body portion, a distal transition portion, a distal end portion, and an angled inward distal end. When loaded onto the delivery device, the outer surface of the stent contacts at least the angled inward distal end of the delivery device and movement of the stent is prevented.

Delivery device

A delivery device for deploying an expandable prosthesis and method of use thereof are described. The delivery device includes an outer sheath that is capable of retracting in a proximal direction and resheathing over the prosthesis in a distal direction. The device includes a drive pulley that can engage gears to retract or resheath the outer catheter in relation to the prosthesis. In some embodiments, the delivery device may include a reinforced outer sheath disposed over an inner elongate member, the reinforced outer sheath comprising a proximal section reinforced with a braid, a distal section reinforced with a coil and an overlapping section extending between the proximal section and the distal section. Additionally or alternatively, the delivery device may include a stabilizing element for releasably holding the stent to the inner catheter.

Anti-obesity devices

Method and apparatus for limiting absorption of food products in specific parts of the digestive system is presented. A gastrointestinal implant device is anchored in the pyloric portion of the gastrointestinal system and extends beyond the ligament of Treitz. All food exiting the stomach is funneled through the device. The gastrointestinal device includes an anchor for anchoring the device in the pyloric portion and a flexible sleeve that extents into the duodenum. The anchor is collapsible for endoscopic delivery and removal.

Joined Inflation Portions for Bifurcation Catheter

An example multi-lumen member forming dual inflation portions of a catheter assembly for treating bifurcated vessels includes a main tube defining a main lumen and a main inflation portion. The member includes a side tube defining a side lumen and a side inflation portion, the side tube extending along at least a first length of the main tube. The member also includes a portion extending along the first length of the main tube and coupling the main tube to the side tube to form a dual lumen configuration.

Apparatus and methods for treating obstructions within body lumens

Apparatus and methods are provided for delivering fluid into a body lumen during a medical procedure. A distal end of an apparatus may be introduced into a body lumen, and a valve on the distal end may be opened to deliver fluid through a first lumen into the body lumen, e.g., contrast and/or other diagnostic or therapeutic agents. The valve may be closed, and a procedure may be performed within the body lumen, e.g., using a treatment element carried on the distal end. For example, the treatment element may include a balloon that may be inflated when fluid is delivered through the first lumen with the valve closed. Optionally, a prosthesis, energy source, drug platform, and the like may be carried by the balloon for treating the body lumen. In various embodiments, the valve may be located proximal or distal to the treatment element.

Quick release mechanism for medical device deployment

A medical device assembly having a quick release mechanism reversibly engaged with a medical device and a method used by an operator to deploy said medical device at a targeted site in a body vessel is provided. The quick release mechanism generally comprises an inner core wire and an outer coil having a proximal section and distal section. The inner core wire and the outer coil are coupled together proximate to their distal end with the outer coil having an enlarged overall thickness in its distal section. The medical device has an opening sized to receive and to detachably engage the distal section of the outer coil. The quick release mechanism having an engaged position in which the outer coil is securely holds the medical device and a detached position in which the outer coil and medical device are substantially unengaged. The operator causes the quick release mechanism to move from the engaged position to the detached position by moving the inner core wire and outer coil in opposite directions.

System and method for delivering a stent to a bifurcated vessel

A stent delivery catheter system for accurately positioning a stent in a bifurcated vessel is disclosed. The system includes a catheter having a terminal portion and distal tip that is placed in a main branch of the vessel proximate the bifurcation. A fixed guidewire is attached to distal tip. A port is defined in the terminal portion of the catheter. The port is aligned with an ostium of a side branch of the bifurcated vessel to allow the passage of a stent delivery device, such as a balloon catheter having a stent crimped thereon, into the side branch. Radiopaque bands are positioned on opposite ends of the port. A positioning balloon is included on a surface of the catheter opposite the port and is selectively inflatable to position the radiopaque bands adjacent the side branch ostium. The radiopaque bands are referenced to place the stent proximate the side branch ostium.

Stentless Support Structure

A stentless support structure capable of being at least partly assembled in situ. The support structure comprises a braided tube that is very flexible and, when elongated, becomes very long and very small in diameter, thereby being capable of placement within a small diameter catheter. The support structure is preferably constructed of one or more thin strands of a super-elastic or shape memory material such as Nitinol. When released from the catheter, the support structure folds itself into a longitudinally compact configuration. The support structure thus gains significant strength as the number of folds increase. This radial strength obviates the need for a support stent. The support structure may include attachment points for a prosthetic valve.

Large Vessel Closure Device and Method

A low profile stent device consisting of a stent plus an optional covering is placed percutaneously into a blood vessel to provide vascular closure to a nearby large diameter arteriotomy site. A self-expanding stent device is mounted onto a balloon for postdilitation and is held in a small diameter configuration by an outer case. A balloon expandable stent device has hinge and strut features that provide it with crush resistance. The cone and sheath of the deliver catheter serves as a dilator and introducer sheath to assist in delivery. An attachable guidewire reduces profile by eliminating a guidewire lumen. A locator balloon placed through the large diameter arteriotomy introducer sheath assists positioning.

Automatic quantitative vessel analysis

Apparatus and methods are described for use with an image of blood vessels of a subject. In response to a user designating a single point on the image (a) a target portion of a blood vessel is automatically identified in the vicinity of the designated point, and (b) quantitative vessel analysis is performed on the target portion of the blood vessel. An output is generated based upon the quantitative vessel analysis. Other embodiments are also described.

Cutting balloon assembly and method of manufacturing thereof

A method for fabrication of a cutting balloon assembly is described. The method includes providing a predetermined number of filaments having predetermined properties, diameter and length and fabricating a scoring mesh on a weaving jig having a plurality of pins disposed circumferentially about the jig's surface. The fabrication of the scoring mesh includes placing the filaments between the pins and interlacing the filaments to form a scoring mesh by interweaving and intertwining at least a part of filament to form one or more permanent links with neighboring filaments. The fabrication of the scoring mesh also includes forming distal and proximal filament loops that protrude from the mesh distal and proximal ends, respectfully. The scoring mesh is mounted on an expandable balloon mounted on a distal end of a delivery catheter.

Narrow profile composition-releasing expandable medical balloon catheter

The present invention relates to a composition-eluting balloon catheter ( 100 ) having a proximal ( 20 ) and distal ( 15 ) end, comprising an elongated catheter tube ( 6 ) with an inflation lumen ( 7 ) extending therewithin and at least one inflatable balloon ( 4 ) towards the distal end ( 15 ) in fluid communication with the inflation lumen ( 7 ), wherein the balloon ( 4 ) in the uninflated condition is provided as one or a plurality of folded wings ( 10′, 10 ″), and composition ( 12′, 12 ″) is provided essentially exclusively within the folds of the wings ( 10′, 10 ″), wherein the balloon ( 4 ) in the uninflated condition is further provided with a relief structure ( 30 ) comprising at least one groove on the outside of the folded wings ( 10′, 10 ″), configured to substantially reduce in depth in an inflated state of the balloon ( 4 ), and whereby the at least one groove is essentially devoid of composition ( 12′, 12 ″).

Prosthetic heart valve delivery apparatus

Certain embodiments of the present disclosure provide a prosthetic valve (e.g., prosthetic heart valve) and a valve delivery apparatus for delivery of the prosthetic valve to a native valve site via the human vasculature. The delivery apparatus is particularly suited for advancing a prosthetic heart valve through the aorta (i.e., in a retrograde approach) for replacing a diseased native aortic valve. The delivery apparatus in particular embodiments is configured to deploy a prosthetic valve from a delivery sheath in a precise and controlled manner at the target location within the body.

Medical delivery system and method for delivery of a medically useful payload

The present disclosure concerns a delivery system for delivering a medically useful payload through the vasculature to a site of interest in the patient's body. The medically useful payload may be a therapeutic device, such as a stent, and it may be a diagnostic tool, such as an imaging device. Owing to its structural attributes, the presently-inventive delivery system is well suited for carrying medical payload to and through vessel curvature and to branched regions (i.e., bifurcations) in same. Also, the device is well-suited to traveling through a vessel over a guiding element, such as a guidewire, which itself exhibits curvature.

Introducer with ratchet handle drive

A stent graft introducer has stent graft releasably retained onto a deployment catheter and a sheath encloses the stent graft. A handle assembly has a handle, a first slide and a second slide. The first slide retracts within the second slide and the second slide retracts within the handle. An actuation arrangement comprises a first longitudinal gear rack on the first slide, a second longitudinal gear rack on the second slide and a ratchet lever assembly on the handle. Actuation of the ratchet lever assembly causes the second slide to fully retract into the handle at which time the ratchet lever assembly engages the first gear rack through an aperture in the second rack and continued actuation causes retraction of the first slide thereby retracting the sheath from the pusher to expose the stent graft.

Vascular remodeling device

Described herein are flexible implantable devices or stents that can conform to the shape of vessels of the neurovasculature. In some embodiments, the devices can direct blood flow within a vessel away from an aneurysm or limit blood flow to the aneurysm. In some embodiments, a vascular remodeling device includes a first section and a protruding section. During deployment, the device expands from a compressed configuration to an expanded configuration. The first section anchors the device in an afferent vessel and/or in an efferent vessel of a bifurcation and the protruding section is positioned in the junction of the bifurcation having an aneurysm and across the neck of the aneurysm or at least partially within the aneurysm.

Paraplegia prevention valve for stent grafts

A stent graft defining a main lumen bounded by a wall of graft material is disclosed. The stent graft has a valve portion between proximal and distal portions. The valve portion is formed by a wall portion having a part-circumferential double layer portion comprising an inner underlap portion and an outer overlap portion, the double layer portion forming a passageway parallel to the main lumen. The passageway has an entrance mouth and an exit mouth. The passageway has an open condition where the underlap and overlap portions are spaced apart to form a vent lumen. The wall portion is broken by a narrow cut. The cut is openable by relative radial movement between its edges. This allows re-perfusion of an aneurism and perfusion of blood from within the lumen out towards blood vessels such as intercostals and can assist in minimising the chance of paraplegia.

Checker balloon winding machine

A device for winding a filament around a structure disposed concentrically around a distal end of a balloon catheter includes a rotatable holder for retaining a distal end of the balloon catheter, a translatable winding carriage for helically winding the tensioned filament around the balloon catheter distal end, a heater for applying a predetermined amount of heat to a section of the balloon catheter having the filament wound therearound, and a controller for controlling at least the rate of rotation of the holder, the tensioning force applied to the filament, the amount of heat applied by the heater, and the rate of travel of the translatable winding carriage along the longitudinal dimension of the balloon catheter. By use of the device, the balloon is heat set and a predetermined checkering pattern of surface indentations are provided in the structure exterior surface in a single pass.

Thoracic aorta stent graft

A stent graft for placement in the thoracic arch of a patient has a tubular body defining a main lumen therethrough, a plurality of zig zag stents along the tubular body, each of the stents comprising a plurality of struts and bends, the bends being between adjacent struts. At least a first stent and an adjacent second stent having at least a pair of adjacent bends on the first stent aligned with an adjacent pair of bends on the second stent, whereby a first pair of adjacent struts of the first stent and a second pair of adjacent struts of the second adjacent stent together define a diamond shape region. A recess is within the diamond shaped region with the recess extending into the lumen of the tubular body. A fenestration extending into the tubular body within the recess in the diamond shaped region and a graft tube leading from the fenestration into the main lumen. There can be one, two or three diamond shaped regions, recesses, fenestrations and graft tubes Proximally of the or each diamond shaped region the tubular body has a first diameter, distally of the diamond shaped region the tubular body has a second diameter and in the region of the tubular body around the diamond shaped region the tubular body has a third diameter, the first diameter being greater than the second diameter and both the first and second diameter being greater than the third diameter whereby a central region is defined which will allow circumferential blood flow during an operation out of the graft tube into the recess and then into the central region.

Devices and methods for treatment of vascular aneurysms

The present invention relates to devices and methods for the treatment of diseases in the vasculature, and more specifically, devices and methods for treatment of aneurysms found in blood vessels. In a first embodiment of the present invention, a two part prostheses, where one part is an expandable sponge structure and the other part is an expandable tubular mesh structure, is provided. In the first embodiment, the expandable sponge structure is intended to fill the aneurysm cavity to prevent further dilatation of the vessel wall by creating a buffer or barrier between the pressurized pulsating blood flow and the thinning vessel wall. In the first embodiment, the expandable tubular mesh structure is placed across the aneurysm, contacting the inner wall of healthy vessel proximal and distal to the aneurysm.

Spring Controlled Stent Delivery System

A stent delivery system and a method for releasably constraining a stent and a method of implanting a stent are provided. The stent delivery system includes an elongate shaft including a proximal portion, a distal portion, a lumen extending at least partially therethrough, and a stent receiving portion on the distal portion of the shaft. The stent delivery system also includes a stent positioned at the stent receiving portion of the elongate shaft, the stent having a constrained configuration and an expanded configuration. A first biasing member is operably connected to the shaft and the stent and a second biasing member is operably connected to the shaft and the stent. The first and second biasing members have a first configuration cooperatively applying a longitudinal tensioning force to the stent and a second configuration cooperatively releasing the longitudinal tensioning force on the stent.

Stretchable stent and delivery

An implant delivery catheter enables permanent modification of the implant length in the vicinity of the treatment site prior to radial expansion thereof. The implant is releasable carried between inner and outer tubular members of the delivery catheter which, upon repositioning relative to one another using an actuator mechanism, impart any of tensile, compressile or torquing forces to the implant causing permanent modification of the implant length. In one embodiment, the circumference of the implant is substantially similar both before and after modification of the implant length. In another embodiment, the implant includes a plurality of strut sections interconnected by bridges which are capable of the deformation along the longitudinal axis of the implant.

Surgical articles for placing an implant about a tubular tissue structure and methods

A minimally invasive surgical instrument for placing an implantable article about a tubular tissue structure is disclosed. The surgical instrument is particularly useful for treating urological disorders such as incontinence. Surgical methods using the novel instrument are also described.

In vivo sensor and method of making same

Implantable in vivo sensors used to monitor physical, chemical or electrical parameters within a body. The in vivo sensors are integral with an implantable medical device and are responsive to externally or internally applied energy. Upon application of energy, the sensors undergo a phase change in at least part of the material of the device which is then detected external to the body by conventional techniques such as radiography, ultrasound imaging, magnetic resonance imaging, radio frequency imaging or the like. The in vivo sensors of the present invention may be employed to provide volumetric measurements, flow rate measurements, pressure measurements, electrical measurements, biochemical measurements, temperature, measurements, or measure the degree and type of deposits within the lumen of an endoluminal implant, such as a stent or other type of endoluminal conduit. The in vivo sensors may also be used therapeutically to modulate mechanical and/or physical properties of the endoluminal implant in response to the sensed or monitored parameter.

Actively Controllable Stent, Stent Graft, Heart Valve and Method of Controlling Same

Sealable and repositionable implant devices are provided with features that increase the ability of implants such as endovascular grafts and valves to be precisely deployed or re-deployed, with better in situ accommodation to the local anatomy of the targeted recipient anatomic site, and/or with the ability for post-deployment adjustment to accommodate anatomic changes that might compromise the efficacy of the implant. A surgical implant includes an implant body and a selectively adjustable assembly attached to the implant body, the assembly having adjustable elements and being operable to cause a configuration change in a portion of the implant body and, thereby, permit implantation of the implant body within an anatomic orifice to effect a seal therein under normal physiological conditions.

Medical balloon and balloon catheter assembly

A medical balloon ( 10 ) of a balloon catheter assembly ( 70 ) includes a balloon wall ( 22 ) formed of at least two layers ( 30, 32 ). The first layer ( 30 ) is made of an impervious polymeric material. The second layer ( 32 ), which is integral with the first layer ( 30 ) is made of a radiopaque and/or echogenic material and a polymeric material. In the preferred embodiment, there is provided 60 to 80% by weight of radiopaque material in the second layer ( 32 ). It has been found that these concentrations of radiopaque material provide good visibility of the balloon under ultrasonic imaging.

Splittable dilator delivery system

A delivery system for an implantable member includes an elongated dilator splittable at both the proximal and distal ends. The dilator has a tapered distal end and a pair of tabs at the proximal end. An introducer for the implantable member is received in a passageway of the dilator and extends along a length of the dilator to the tapered distal end. The introducer is arranged relative to the dilator such that upon a relative proximal movement of the dilator, the tapered distal tip of the dilator splits whereby the distal end of the introducer extends therethrough. A handle has a gripping mechanism for engagement with each tab for initiating proximal movement of the dilator relative to the introducer upon rotation of the gripping mechanism. The handle is structured for splitting the dilator proximal portion upon the relative proximal movement of the dilator.

Deformable Lumen Support Devices and Methods of Use

Lumen support devices and methods of their use are provided. A lumen support includes one or more plastically deformable cells having two stable configurations with no stable configurations between the two stable configurations. The lumen support device may be plastically deformed to other stable configurations.

Balloon catheters and methods for use

Apparatus and methods are provided for flaring a stent deployed within a branch vessel including an ostium communicating with a main vessel, a first end of the stent extending at least partially from the branch. A catheter is provided that includes a first balloon carried on its distal end, and a second balloon that includes a distal section overlying at least a portion of the first balloon and a proximal section. The catheter distal end is introduced into the main vessel and positioned through the ostium and stent into the branch until the first balloon is disposed within the stent. The first balloon is expanded to anchor the stent, and the second balloon is expanded to flare the first end of the stent. Optionally, the first balloon is expanded further, e.g., to expand the stent within the branch body lumen and/or dilate the lesion.

Device for loading self-expanding stents

A loading device for self-expanding stents that utilizes a rod with a stop on one end, a compressible sleeve that is slidably mounted on the rod and a compressible member slidably mounted on the rod and configured to increase the diameter of the compressible sleeve when forced against it.

APPARATUS FOR COMPRESSING AN EXPANDABLE MEDICAL DEVICE

Various systems for compressing and loading an expandable medical device into a sheath are disclosed. One system comprises an array of moveable blades radially disposed about a central axis and forming a radially contractible aperture. The blade array includes at least a first plurality of blades and a second plurality of blades. The first plurality of blades is independently moveable with respect to the second plurality of blades. Additional aspects of the invention include methods of using the various compressor systems to compress and load an expandable medical device into a sheath. 1. A system for compressing a medical device comprising:a plurality of moveable blades disposed about a central axis and forming an iris that defines a radially contractible aperture, the blades being configured to receive and compress a medical device within the aperture; andan operating mechanism for moving the plurality of blades between an expanded configuration and a contracted configuration;wherein a subset of the plurality of blades is independently moveable in at least a first axial direction with respect to other of the plurality of blades while the plurality of blades are in a contracted configuration.2. The system according to claim 1 , wherein said subset of the plurality of blades is independently moveable in at least the first axial direction while said other of the plurality of blades are stationary.3. The system according to claim 2 , wherein the compressed medical device is moved a second claim 2 , opposite axial direction within the aperture when said subset of the plurality of blades is moved in the second axial direction.4. The system according to claim 3 , wherein the medical device is moved in the second axial direction without retracting said other of the plurality of blades from the device.5. The system according to claim 4 , wherein the medical device is moved in the second axial direction without retracting any of the plurality of blades from the device.6. ...

Loading and Delivery of Self-Expanding Stents

A method of deploying a stent includes providing a delivery system with the stent loaded in a reduced diameter configuration between an inner catheter and an outer sheath, the stent including a covering positioned on a luminal wall surface thereof, the inner catheter including a radially outwardly extending protrusion that extends into the covering but does not intersect a plane along the stent luminal wall surface, advancing the delivery system to a stenting site, and withdrawing the outer sheath to deploy the stent at the stenting site. 1. A method of deploying a stent , comprising:providing a delivery system with the stent loaded in a reduced diameter configuration between an inner catheter and an outer sheath, the stent including a covering positioned on a luminal wall surface thereof, the inner catheter including a radially outwardly extending protrusion that extends into the covering but does not intersect a plane along the stent luminal wall surface;advancing the delivery system to a stenting site; andwithdrawing the outer sheath to deploy the stent at the stenting site.2. The method according to claim 1 , wherein the withdrawing includes a tip of the outer sheath stretching and sliding over an abluminal wall surface of the stent.3. The method according to claim 1 , wherein the withdrawing includes a tip of the outer sheath stretching and sliding over an outer covering positioned on an abluminal wall surface of the stent.4. The method according to claim 1 , wherein the withdrawing includes withdrawing the outer sheath by moving a proximal end of the outer sheath in a proximal direction.5. The method according to claim 1 , wherein the withdrawing includes using a pull wire within a shaft lumen to proximally move the outer sheath.6. The method according to claim 1 , wherein the outer catheter is a full length outer catheter such that the withdrawing includes pulling on a proximal end of the outer catheter at a proximal end of the delivery system.7. The method ...

Endoluminal prosthesis with steerable branch

An endoluminal prosthesis may include a tubular main graft body including a sidewall and proximal and distal ends. A first stent may be positioned near the proximal end of the main graft body. A second stent may be positioned adjacent to and distal of the first stent. An opening in the sidewall may be positioned longitudinally between a peak of the first stent and a valley of the second stent. A tubular branch may be disposed in the opening. The branch may include first and second end openings. The branch may be flexibly orientable between a retrograde configuration in which the first end opening is oriented toward the distal end and the second end opening is oriented toward the proximal end and an antegrade configuration in which the first end opening is oriented toward the proximal end and the second end opening is oriented toward the distal end.

APPARATUS FOR AND METHOD OF PULLING A TENSILE MEMBER FROM A MEDICAL DEVICE

Mechanisms for pulling a tensile member a predetermined distance from a medical device having an intracorporeal end and an extracorporeal end are disclosed. Such mechanisms may be safely operated using a robot, two hands, or in some embodiments, only one hand. Such mechanisms may include one or more cams, drums, or pulley-like members and a lever, and may be physically coupled to an extracorporeal portion of the medical device. 1. An elongated vascular implant delivery device comprising:an elongated shaft having a distal end, a proximal end, and a longitudinal axis; a lever rotatably coupled to the elongated shaft;', 'a tensile member coupled to the release mechanism at a first point along its length and coupled to the lever at a second point along its length and a length of tensile member between the first and second points disposed within or alongside the elongated shaft;, 'a release mechanism;'} 'wherein the lever, cam, and tensile member are adapted to cooperate such that rotation of the lever through a prescribed angle with respect to the elongated shaft will move the release mechanism toward the proximal end of the elongated shaft.', 'a cam for a length of the tensile member between the first point and the second point, the cam coupled to the elongated shaft,'}2. The device of claim 1 , further comprising:a grip coupled to and in a fixed position with respect to a portion of the elongated shaft, the grip adapted to receive forces from one or more digits of a hand.3. The device according to claim 1 , wherein the cam is rotatably coupled to the elongated shaft.4. The device of claim 3 , wherein a surface of the cam in contact with a length of tensile member has a constant distance with respect to a pivotal axis about which the cam is rotatable.5. The device of claim 2 , wherein the cam is rotatably coupled to the grip.6. The device according to claim 2 , wherein the grip projects from a housing within which the cam may rotate.7. The device of claim 6 , wherein ...

Surgical Stapling System

A system is provided for joining two tubular structures by a surgical stapling procedure. The system includes a series of sizers, a specifically designed graft, a loading unit, a wand, a tourniquet, and a stapling instrument. As a result, a plurality of staples may be simultaneously deployed quickly and accurately in a circumferential pattern so as to join together two tubular structures. The system may be used in either an open surgical procedure or laparascopically.

Medical Implant Maintaining Gaps upon Crimping, Method and Delivery Device

An implant, intended to be detachably fixed or crimped on a portion or an outer surface of a catheter for being delivered to an implantation site, includes a longitudinal axis, or an inner space or inner volume longitudinally extending within the implant, and a radial direction perpendicular to the longitudinal axis, space or volume. The implant includes a first structural element having a first portion, a second structural element having a second portion, and one or more interconnecting elements arranged between the first and the second structural elements. In the implant, the first portion and/or the second portion is/are located less radially as regards the longitudinal axis, inner space, or volume than a third portion of the one or more interconnecting elements.

Implant delivery device adapted to be attached to or interconnected with a catheter, catheter and method

A device is intended to be attached to or interconnected with a medical implant, and intended to be attached to or interconnected with a catheter. The catheter is intended for implanting the implant.

METHOD AND APPARATUS FOR ENDOVASCULAR THERAPY OF AORTIC PATHOLOGY

Assemblies, devices, and methods for positioning the same proximate a target site within a body lumen are provided. The assembly includes first and second components that can function independently of one another to address a patient's vascular abnormalities or can cooperate to form an assembly. The assembly is designed to address aortic pathologies near clusters of arterial branches in a way that allows blood to continue flowing to the arterial branches during the procedure while providing an adequate landing zone for the adjoining component. One of the components may include a tapered portion near one end that can be received by a corresponding end of the other component. Alternatively, one of the components may include an invaginated end that is able to receive a corresponding end of the other component such that the position of each component is substantially fixed with respect to the other. 1. A vascular assembly for treating a target site within a body lumen comprising:a first component defining a first end, a second end, and a lumen extending therebetween; anda second component defining a first end, a second end, and a lumen extending therebetween, wherein the second end of the second component is configured to receive the second end of the first component,wherein the first component is configured to engage an inner surface of a vessel wall proximate a first group of arterial branches at the target site,wherein the second component is configured to engage an inner surface of the vessel wall proximate a second group of arterial branches at the target site, andwherein each of the first and second components is independently deployable to the target site and is configured for use at the target site both independently of the other component and in cooperation with the other component.2. The vascular assembly of claim 1 , wherein the second end of at least one of the first and second components has a smaller inner diameter than the first end of the respective ...

ENDOGRAFTS FOR PARALLEL ENDOLUMINAL GRAFTS

An endograft is provided for a blood vessel having a branch extending from said blood vessel, including a body having a wall defining a lumen and an exterior surface. The endograft body includes a first portion defining or being made to define a non-circular cross-sectional dimension, and a second portion defining a circular cross-sectional dimension. Modular systems including the endograft and methods for creating endografts according to the disclosure are described also. 1. A modular endograft system for deploying in a lumen , comprising:at least two endografts for disposing alongside or parallel one to another for at least a portion of a longitudinal dimension thereof, at least said parallel portion of at least one of the at least two endografts defining or being made to define a non-circular cross-sectional dimension including a surface having a shape substantially conforming to a shape of an inner surface of said lumen;whereby apposition of an outer surface of the at least two stent grafts one to another and to said inner luminal surface is facilitated.2. The modular endograft system of claim 1 , wherein the lumen is a blood vessel.3. The modular endograft system of claim 1 , wherein the lumen is a prosthetic device.4. The modular endograft system of claim 1 , wherein the non-circular cross-sectional dimension defines or is made to define a two-dimensional shape that is one of a lens claim 1 , a crescent claim 1 , and a circular segment.5. The modular endograft system of claim 1 , wherein the non-circular cross-sectional dimension comprises two segments joined at each end by first and second convex vertices;further wherein at least one of said segments defines a shape substantially conforming to an arc defined by to a segment of said the inner surface of said lumen.6. The modular endograft system of claim 1 , including a plurality of apposing endografts for deploying together as a unit claim 1 , the plurality of endografts defining or being made to define a non ...

Tissue prosthesis processing technology

A heart valve prostheses crimping apparatus and method for deducing the diameter of stents containing heart valve prosthesis. A medical prosthesis catheter loading apparatus, including a crimping assembly for reducing the diameter of a prosthesis; and a catheter clamp for holding a catheter adjacent to the prosthesis. Also disclosed is an apparatus for reducing the diameter of a medical prosthesis, including a base, a crimp head connectable to the base, and an actuation mechanism connected to the base and connectable to the crimp head to actuate the crimp head. Also disclosed is a method of loading a medical prosthesis into a catheter, including the steps of reducing the diameter of a prosthesis from its normal deployed state to a diameter less than that of the lumen of the catheter; holding a catheter adjacent to the reduced diameter prosthesis; and moving the prosthesis into the catheter lumen.

MEDICAL DEVICES INCLUDING SUPERHYDROPHOBIC OR SUPEROLEOPHOBIC SURFACES

The present invention relates to medical devices including a superhydrophobic surface or coating, a superoleophobic surface or coating, a coating or surface that is both superhydrophobic and superoleophobic, or a combination of such coatings and surfaces. Such a coating or surface can impart advantageous lubricity, hemocompatibility, or both to the medical device or its surface. 1. A medical device comprising a superhydrophobic surface or coating , a superoleophobic surface or coating , a coating or surface that is both superhydrophobic and superoleophobic , or a combination of such coatings and surfaces.2. The medical device of claim 1 , wherein the medical device is or comprises an electrophysiology catheter; a self-expanding stent delivery system; a braided metal implant; a flow diverter; a neurological stent; a multi electrode electrophysiology mapping and ablation device; a knitted polymer filament mesh device claim 1 , e.g. claim 1 , for hernia repair; a urogyncologic sling claim 1 , a prolapse device; a cosmetic surgery mesh; or a device made of a noble metal.3. The medical device of claim 1 , wherein a portion of the medical device is at least partially coated with or made from a substance that is superhydrophobic claim 1 , superoleophobic claim 1 , or both; the portion of the medical device being or comprising: a luminal surface of a coronary stent; a luminal surface of a percutaneous valve delivery catheter; a distal luminal surface where a preloaded implant is in contact with the delivery catheter; a luminal surface of an angiographic or infusion catheter; a fixation pins for a fixation device; an articulated surface of a joint implant; a lumen of a self-expanding stent delivery system; a surface or surface of a self-expanding stent delivery system; an abdominal aortic aneurysm delivery system; an AAA graft; a septal defect device; or a mesh contacting an angiography catheter.4. The medical device of as illustrated in .5. The medical device of as ...

Delivery system for vascular implant

A medical treatment system and method of treatment is described having an implant that can be positioned and deployed, then undeployed to allow repositioning of the implant. The system includes a self-expanding medical implant that longitudinally foreshortens upon radially expanding from a radially compacted state, a distal interface configured to attach the implant to a distal mount of a delivery device, and a proximal interface configured to attach the implant to a proximal mount of the delivery device. Moving the distal mount longitudinally away from the proximal mount applies a longitudinal tension to the implant causing the implant to expand longitudinally and contract radially, and moving the distal mount toward the proximal mount reduces a longitudinal tension in the implant allowing the implant to expand radially toward a fully expanded state.

SYSTEMS AND METHODS FOR SHEATHING AN IMPLANTABLE DEVICE

Systems and methods are disclosed for delivering a stent to a lumen internal to a body of a patient and for sheathing a stent just prior to an insertion procedure. One embodiment comprises a delivery device having a partially sheathed configuration, a fully sheathed delivery configuration, and a deployed configuration. A panchor (combination pusher and anchor) is configured to engage and limit proximal and distal movement of the implantable device. An outer sheath surrounds a distal portion of an inner member and retains the implantable device near the distal end. The outer sheath is slidably moveable relative to the inner member to deploy the implantable device. Proximal movement of a trigger results in movement of the outer sheath to deploy the implantable device. A sheathing mechanism is configured to crimp and fully sheathe the implantable device prior to a deployment procedure. 1. A sheathing apparatus to facilitate sheathing of a crimpable implantable device into a delivery device that is configured to deploy the implantable device within a body of a patient , the sheathing apparatus comprising:a plurality of sheathing fingers to crimp an unsheathed portion of the implantable device in a partially sheathed state, the plurality of sheathing fingers configured to engage and move a portion of a tubular member of the delivery device as the plurality of sheathing fingers are moved distally relative to the implantable device; anda translational member that is axially displaceable relative to the tubular member of the delivery device, the translational member comprising a tapered member disposed at a distal end of the translational member to interact with the plurality of sheathing fingers and translate axial movement of the translational member in a distal direction along the tubular member into radial force to compress and thereby crimp the unsheathed portion of the implantable device.2. The sheathing apparatus of claim 1 , wherein the translational member ...

SAFETY MECHANISM FOR AN IMPLANTABLE DEVICE DEPLOYMENT APPARATUS

Systems and methods are disclosed for delivering a stent to a lumen internal to a body of a patient and for sheathing a stent just prior to an insertion procedure. One embodiment comprises a delivery device having a partially sheathed configuration, a fully sheathed delivery configuration, and a deployed configuration. A panchor (combination pusher and anchor) is configured to engage and limit proximal and distal movement of the implantable device. An outer sheath surrounds a distal portion of an inner member and retains the implantable device near the distal end. The outer sheath is slidably moveable relative to the inner member to deploy the implantable device. Proximal movement of a trigger results in movement of the outer sheath to deploy the implantable device. A sheathing mechanism is configured to crimp and fully sheathe the implantable device prior to a deployment procedure. 1. A delivery system for sheathing a crimpable implantable device and deploying the implantable device within a body of a patient , the delivery system comprising:a delivery device to position and deploy the implantable device, the delivery device having a tubular member configured to receive and house the implantable device in a crimped state for delivery to a target location within the body of the patient, the delivery device having a partially sheathed configuration, a fully sheathed delivery configuration, and a deployed configuration; anda safety mechanism removably engaged to the delivery device to limit operation of the delivery device and inhibit unintended deployment of the implantable device, the safety mechanism configured to permit transition of the delivery device from the partially sheathed configuration to the fully sheathed delivery configuration during a sheathing process and further configured to restrict transition of the delivery device from the fully sheathed delivery configuration, wherein the safety mechanism is removable from the delivery device to allow ...

Implantable device deployment apparatus

Systems and methods are disclosed for delivering a stent to a lumen internal to a body of a patient and for sheathing a stent just prior to an insertion procedure. One embodiment comprises a delivery device having a partially sheathed configuration, a fully sheathed delivery configuration, and a deployed configuration. A panchor (combination pusher and anchor) is configured to engage and limit proximal and distal movement of the implantable device. An outer sheath surrounds a distal portion of an inner member and retains the implantable device near the distal end. The outer sheath is slidably moveable relative to the inner member to deploy the implantable device. Proximal movement of a trigger results in movement of the outer sheath to deploy the implantable device. A sheathing mechanism is configured to crimp and fully sheathe the implantable device prior to a deployment procedure.

Bond between components of a medical device

An elongated member and a method of manufacturing an elongated member may include first, second, and third elongated rod mandrels. The first, second, and third elongated rod mandrels may be fixed together at predetermined proximal and distal locations and at a ball tip. The first, second, and third rod mandrels may be disposed within a tubular coupling element and fixed to the tubular coupling element at the ball tip. The tubular coupling element may be placed into abutment with and fixed to the distal end of an elongated shaft.

DELIVERY SYSTEMS AND METHODS FOR SHEATHING AND DEPLOYING AN IMPLANTABLE DEVICE

Systems and methods are disclosed for delivering a stent to a lumen internal to a body of a patient and for sheathing a stent just prior to an insertion procedure. One embodiment comprises a delivery device having a partially sheathed configuration, a fully sheathed delivery configuration, and a deployed configuration. A panchor (combination pusher and anchor) is configured to engage and limit proximal and distal movement of the implantable device. An outer sheath surrounds a distal portion of an inner member and retains the implantable device near the distal end. The outer sheath is slidably moveable relative to the inner member to deploy the implantable device. Proximal movement of a trigger results in movement of the outer sheath to deploy the implantable device. A sheathing mechanism is configured to crimp and fully sheathe the implantable device prior to a deployment procedure. 1. A delivery system for sheathing a crimpable implantable device and deploying the implantable device within a body of a patient , the delivery system comprising:a delivery device to position and deploy the implantable device, the delivery device having a tubular member configured to receive and house the implantable device in a crimped state for delivery to a target location within the body of the patient, the delivery device having a partially sheathed configuration, a fully sheathed delivery configuration, and a deployed configuration; anda sheathing mechanism to crimp the implantable device and transition the delivery device from the partially sheathed configuration to the fully sheathed delivery configuration to sheathe the implantable device.2. The delivery system of claim 1 , wherein the sheathing mechanism comprises:a plurality of sheathing fingers to crimp an unsheathed portion of the implantable device; anda translational member that is axially displaceable relative to the tubular member of the delivery device, the translational member comprising a tapered member disposed at a ...

MEDICAL DEVICE WITH ONE OR MORE SHEATHING TRANSITION MEMBERS

Medical device delivery systems and methods for making and using medical device delivery systems are disclosed. An example medical device delivery system may include an outer sheath. An inner catheter may be disposed within the outer sheath. The inner catheter may have a distal end. An implant may be releasably coupled to the inner catheter. The implant may be configured to shift between a first configuration where the implant is sheathed within the outer sheath and a second configuration where the implant is unsheathed. A sheathing transition member may be coupled to the inner catheter. The sheathing transition member may be configured to ease shifting of the implant from the second configuration to the first configuration. 1. A medical device delivery system , comprising:an outer sheath;an inner catheter disposed within the outer sheath, the inner catheter having a distal end;an implant releasably coupled to the inner catheter;wherein the implant is configured to shift between a first configuration where the implant is sheathed within the outer sheath and a second configuration where the implant is unsheathed; anda sheathing transition member coupled to the inner catheter, the sheathing transition member being configured to ease shifting of the implant from the second configuration to the first configuration.2. The delivery system of claim 1 , wherein the inner catheter includes a coupler including a plurality of coupling fingers.3. The delivery system of claim 2 , wherein sheathing transition member includes a guide disposed over one or more of the coupling fingers.4. The delivery system of claim 3 , wherein the guide has a distal end that extends to a position adjacent to a proximal end of the implant.5. The delivery system of claim 3 , wherein the guide has a distal end that extends to a position distally of a proximal end of the implant.6. The delivery system of claim 3 , wherein the implant includes a plurality of crowns and wherein the guide extends over one ...

Vascular Prosthesis and Methods of Use

An implantable vascular prosthesis is provided for use in a wide range of applications wherein at least first and second helical sections having alternating directions of rotation are coupled to one another. The alternating helical section includes a first and second helical portions each having a flange and having adjacent ends joined directly to one another to define an apex. Each helical portion has a widened flange portion adjacent to the apex, the widened flange portions extending into a space between the helical portions. The prosthesis is configured to conform to a vessel wall without substantially remodeling the vessel, and permits accurate deployment in a vessel without shifting or foreshortening. 1. A method of deploying a vascular prosthesis , comprising:advancing a guidewire to a diseased vessel segment;advancing a delivery system having a vascular prosthesis loaded therein over the guidewire to the diseased vessel segment, the vascular prosthesis including an alternating helical section, the alternating helical section comprising a first helical portion including a flange and a second helical portion including a flange, the first and second helical portions having adjacent ends joined directly to one another to define an apex, each of the first and second helical portions comprising a widened flange portion adjacent to the apex, the widened flange portions extending into a space between the first and second helical portions, the first helical portion having a direction of rotation opposite to that of the second helical portion, and the vascular prosthesis being wound onto a catheter body of the delivery system when the vascular prosthesis is in a contracted configuration;retracting an outer sheath of the delivery system proximally to expose the alternating helical section, the alternating helical section expanding to a deployed configuration;overlapping a portion of the apex by the widened flange portions during at least a portion of a treatment range ...

IMPLANT ASSEMBLY WITH TACTILE INDICATOR

The present disclosure describes an assembly comprising an expandable device, a restraining member wrapped circumferentially around the device, a coupling member releasably securing the restraining member, and at least one tactile indicator located on the assembly at a desired point of partial deployment, along with a method for partially deploying the expandable device in a patient. During partial deployment of the expandable device, the coupling member is tensioned and displaced from outside the patient by a clinician, and upon reaching the tactile indicator, a change in tension on the coupling member is felt my the clinician performing the procedure. 1. An assembly comprising:an expandable device;a restraining member wrapped circumferentially around said device and having opposing edges;an elongated coupling member releasably coupling the opposing edges of the restraining member into a releasable seam; andat least one tactile indicator located on the assembly at a desired point of partial deployment of said device.2. The assembly of claim 1 , wherein said tactile indicator comprises a slack loop configured in said elongated coupling member.3. The assembly of claim 1 , wherein said tactile indicator comprises a disengaged portion further comprising a slack loop interwoven with said elongated coupling member.4. The assembly of claim 1 , wherein said device comprises an endoluminal prosthesis.5. The assembly of claim 1 , wherein said device is at least one of a graft claim 1 , a stent claim 1 , or a stent-graft.6. The assembly of claim 1 , wherein said device is self-expandable.7. The assembly of claim 1 , wherein said device is balloon expandable.8. The assembly of claim 1 , comprising more than one expandable device.9. The assembly of claim 1 , comprising more than one restraining member.10. The assembly of claim 9 , wherein the at least one tactile indicator is located on the assembly between any two adjacent restraining members.11. The assembly of claim 1 , ...

Surgical Implant Devices and Methods for Their Manufacture and Use

A sealable vascular system includes an endovascular implant to be delivered in a compressed or folded state to an implantation site. The endovascular implant includes a tubular implant body and a sealable circumferential collar at said tubular implant body and including a variable sealing device and a control lead traversing from said variable sealing device to a user for controlling said variable sealing device by the user, said variable sealing device and said control lead being cooperatively operable to reversibly expand and contract said sealable circumferential collar such that said sealable circumferential collar is circumferentially adjustable during deployment thereof to achieve a repositionable fluid-tight seal between said sealable circumferential collar and the internal walls of the implantation site.

Device for the in situ delivery of heart valves

A device for deploying a cardiac valve prosthesis includes a distal valve holder portion and a shaft extending towards the valve holder portion. The shaft is selectively bendable to a curved shape to vary the spatial orientation of the valve holder portion with respect to the desired implantation site.

ROTATION OPERATED DELIVERY DEVICE

An endovascular introducer which has a handle assembly, a stent graft deployment device and a stent graft retained on the stent graft deployment device. The handle assembly has a first part and a second part, the second part to be moved relative to the first part. The first part has a fixed portion to be gripped and held by a user and a rotating portion to be rotated. A one way clutch arrangement transfer rotation to co-acting first screw threads so that relative longitudinal motion between the first part and the second part occurs. The deployment device has a pusher assembly and a sheath to cover the stent graft on the pusher assembly. The sheath is connected to the second part so that rotation of the rotating portion causes retraction of the sheath. 2. An endovascular introducer as in wherein the rotation transfer sleeve comprises an internal cylindrical surface and the first screw thread is formed thereon.3. An endovascular introducer as in wherein the second part comprises a cylindrical tube surrounding the pusher assembly claim 1 , the cylindrical tube including at least one longitudinal slot and the fixed portion of the first part being engaged with the pusher assembly through the longitudinal slot whereby the second part can move longitudinally with respect to the pusher assembly and the first part.4. An endovascular introducer as in wherein the one way clutch assembly comprises the rotation transfer sleeve comprising a first ring of gear teeth and the rotating portion comprising a second ring of gear teeth claim 1 , the first ring of gear teeth engaging with the second ring of gear teeth when the rotating portion is rotated in the first direction and the first ring of gear teeth disengaging with the second ring of gear teeth when the rotating portion is rotated in the second direction.5. An endovascular introducer as in wherein the one way clutch assembly further comprises a resilient apparatus resiliently engaging the first ring of gear teeth engaging with ...

Methods and apparatus for treating a type 2 endoleak from within an endoluminal stent

A repair device includes a first elongate member, a second elongate member, and a seal member. The first elongate member includes a proximal end portion and a distal end portion and defines a lumen therebetween. The second elongate member includes a proximal end portion and a distal end portion and is movably disposed within the lumen. The distal end portion of the second elongate member is configured to puncture an endoluminal stent graft disposed within an artery of a patient and to be inserted, at least partially, into an aneurysm sac. The seal member is releasably coupled to the distal end portion of the first elongate member. The seal member is configured to be coupled to the endoluminal stent graft to seal an opening formed by the distal end portion of the second elongate member.

Branch stent graft deployment and method

A deployment device for deploying a self-expanding fenestrated stent graft. The device includes a fenestrated stent graft retained on an introducer. The introducer includes a main catheter and an auxiliary catheter preloaded within the introducer and extending from distal the distal end of the stent graft, into the lumen of the stent graft and through the fenestration.

STENT COVER MEMBER AND STENT APPARATUS

Present invention is a stent apparatus wherein a stent covering member holds a stent, which scaffolds a blood vessel from the inside when implanted in the blood vessel, in contracted state. The stent is formed of a biodegradable polylactic acid (PLA) as a tubular shape, shape memorized to a size capable of, when implanted in a vessel, scaffolding the blood vessel from the inside. This stent is held by the stent covering member in contracted state and mounted on a balloon of a balloon. The covering member is formed of a biodegradable polymer having elasticity as a cylindrical shape having an inner diameter to keep the stent in contracted state and, when the stent is expanded to the shape memorized shape, plastically deformed to release the holding of the stent. The stent and the stent covering member disappear in a vessel after they are implanted in the vessel. 114-. (canceled)15. A stent covering member for covering an outer surface of a stent formed of a biodegradable polymer having a shape memory property as a cylindrical shape and shape memorized to a size capable of scaffolding a vessel from the inside when implanted in the vessel , to hold the stent in contracted state having smaller diameter than the shape memorized shape , wherein;the stent covering member is formed of a biodegradable polymer having elasticity as a cylindrical shape having an inner diameter to keep the contracted stent mounted on a balloon of a balloon catheter in contracted state and, when the stent is expanded to the shape memorized shape, plastically deformed to release the holding of the stent.16. The stent covering member according to claim 15 , wherein the biodegradable polymer forming the stent covering member is a copolymer (LCL) of poly-L-lactide (PLLA) and poly-ε-caprolactone (PCL) having a composition ratio of PLLA and PCL ranging from 95 to 20:5 to 80 in molar ratio (mol %).17. The stent covering member according to claim 15 , wherein the stent covering member has an elastic ...

Endovascular graft

An endovascular graft, which is configured to conform to the morphology of a vessel to be treated, includes a tubular ePTFE structure; an inflatable ePTFE structure disposed over at least a portion of the ePTFE tubular structure; and an injection port in fluid communication with the inflatable ePTFE structure for inflation of the inflatable ePTFE structure with an inflation medium. The inflatable ePTFE structure may be longitudinally disposed over the tubular ePTFE structure. The ePTFE structure may be a bifurcated structure having first and second bifurcated tubular structures, where the inflatable ePTFE structure is disposed over at least a portion of the first and second bifurcated tubular structures.

HEMODIALYSIS GRAFT

A graft is used to interconnect two vessels, such as an artery and a vein for hemodialysis. The graft includes a body having first and second ends, and a wall to define a passageway formed in the body. The wall includes a plurality of tubular layers, such as a first layer and one or more second layers disposed radially inward relative to the first layer. Each second layer has first and second ends that can be enclosable. The second layer is removable from the graft body from within the passageway of the graft body after clot formation. A grasper can be used to attach with at least one of the ends of the second layer. In response to withdrawal of the grasper, the corresponding end of the second layer gathers radially inward away from a layer adjacent to the second layer. 1. A hemodialysis graft comprising:a graft body having a first end, a second end, and a wall to define a passageway formed in the graft body, extending between the first and second ends, the wall comprising a plurality of tubular layers,wherein the plurality of tubular layers comprises a first layer and one or more second layers disposed radially inward relative to the first layer, each second layer having a first end and a second end each being enclosable,wherein the second layer is capable of being removed from the graft body from within the passageway of the graft body.2. The graft of claim 1 , wherein the first and second ends of the second layer comprise a flexible member claim 1 , wherein in response to pulling the flexible member claim 1 , the first and second ends gather radially inward away from a layer adjacent to said second layer.3. The graft of claim 2 , wherein the flexible member has a threaded configuration with said second layer.4. The graft of claim 3 , wherein the flexible member comprises a loop segment.5. The graft of claim 4 , wherein the flexible member comprises a first end and a second end claim 4 , the first end comprising the loop segment claim 4 , and the second end ...

Sterilization methods and apparatus

Sterilization methods for implantable prostheses are described, where a polymeric stent may be sterilized, e.g., via ETO sterilization, at a temperature below a glass transition temperature of the stent. A separate delivery catheter may be sterilized separately and the stent and delivery catheter may then be combined in an aseptic, or semi-aseptic environment and sterilized as an assembled system such that the requirements for sterilizing the system are relatively lower. Additionally and/or alternatively, valve and filter assemblies may be used with an optional mandrel assembly for maintaining sterility of the internal components of a catheter system.

DEVICE FOR INSERTING AN IMPLANT

The invention relates to a device comprising an endovascular implant () for the introduction into blood vessels or body cavities of the human or animal body and an insertion aid (), wherein the implant () and the insertion aid () being connected to each other via a detachment element () designed to be electrolytically corrodible so that after the implant () has been inserted into the body and a voltage has been applied an at least partial dissolution of the detachment element () takes place causing the implant () to be separated from its the insertion aid (), with the detachment element () being made of a cobalt-chrome alloy containing at least 20% w/w cobalt and 10 to 40% w/w chrome. 11212313123. Device comprising an endovascular implant () for the introduction into blood vessels or body cavities of the human or animal body and an insertion aid () , wherein the implant () and the insertion aid () being connected to each other via a detachment element () designed to be electrolytically corrodible so that after the implant () has been inserted into the body and a voltage has been applied an at least partial dissolution of the detachment element () takes place causing the implant () to be separated from the insertion aid () , characterized in that the detachment element () is made of a cobalt-chrome alloy containing at least 20% w/w cobalt and 10 to 40% w/w chrome.2. Device according to claim 1 , characterized in that the cobalt-chrome alloy contains up to 70% w/w of cobalt.3. Device according to claim 2 , characterized in that the cobalt-chrome alloy contains between 30 and 60% w/w of cobalt.4. Device according to claim 1 , characterized in that the cobalt-chrome alloy contains between 15 and 30% w/w of chrome.5. Device according to characterized in that the cobalt-chrome alloy contains between 4 and 12% w/w of molybdenum.6. Device according to claim 1 , characterized in that the cobalt-chrome alloy contains between 8 and 40% w/w of nickel.7. Device according to ...

PARAPLEGIA PREVENTION STENT GRAFT

A stent graft for deployment into the aorta of a patient has a tubular body with a proximal portion of a selected diameter; preferably a reduced diameter portion, distal of the proximal portion, having a diameter less than the selected diameter; a tapered portion, extending between the proximal portion and the reduced diameter portion; and optionally a distal portion, distal of the reduced diameter portion. At least three, preferably four or five, low profile side arms are provided, preferably in the reduced diameter portion and/or the tapered portion, for connection of an arm extension to an aortic branch vessel. All but one of the side arms are to be connected at the physician's choice, depending on the anatomy of the patient. One side arm is to provide temporary perfusion to external of the stent graft after deployment of the stent graft into the aorta, and is subsequently blocked. 1. An implantable device for deployment into a vessel of the human or animal body , comprisinga tubular body of a biocompatible graft material, the tubular body defining a main lumen therethrough, andat least three low profile side arms in the tubular body, each low profile side arm comprising a respective side arm lumen therethrough and the main lumen being in fluid communication with the respective side arm lumens;wherein at least two of the low profile side arms point downwardly and open externally of the tubular body to allow the flow of blood in a distal direction, and at least one of the low profile side arms points upwardly and opens externally of the tubular body to allow the flow of blood in a proximal direction.2. An implantable device as in claim 1 , wherein the low profile side arms in the tubular body are at least four in number claim 1 , and wherein the low profile side arms pointing downwardly and opening externally of the tubular body are at least three in number.3. An implantable device as in claim 1 , wherein the low profile side arms in the tubular body are at least ...

BIFURCATED GRAFT DEPLOYMENT SYSTEMS AND METHODS

A method for deploying an endoluminal vascular prosthesis using a deployment catheter that has at least a main graft portion and a first branch graft portion. The deployment catheter preferably comprises an elongate, flexible catheter body having a proximal end and a distal end, and an outer sheath and an inner core that is axially moveable with respect to the outer sheath. The catheter preferably comprises a main graft restraint that has a main graft release mechanism comprising a main graft sheath and a suture threaded through a plurality of the openings in the main graft sheath. The catheter further comprises at least one branch graft restraint comprising at least one branch graft release mechanism. 1. A method of deploying a bifurcated prosthesis in a patient's vasculature , comprising:supporting the bifurcated prosthesis with a deployment catheter;advancing at least a distal end portion of the deployment catheter and the prosthesis through a first access site in a first vessel in a patient's vasculature to a bifurcation region of the patient's vasculature;positioning a main body portion of the bifurcated prosthesis in a main vessel;positioning a first branch portion of the bifurcated prosthesis in a first branch vessel;positioning a second branch portion of the bifurcated prosthesis in a second branch vessel, wherein the first and second branch vessels branch off the main vessel;releasing a main body portion of the bifurcated prosthesis from a main body restraint so that the main body portion of the bifurcated prosthesis expands in the main vessel; andwithdrawing the main body restraint from the patient's vasculature through a second access site in a second vessel, wherein the second access site is at a different location than the first access site.2. The method of claim 1 , comprising advancing the main body restraint into the patient's body through the first access site.3. The method of claim 1 , comprising releasably restraining the first branch portion of ...

SYSTEM FOR DEPLOYING A DEVICE TO A DISTAL LOCATION ACROSS A DISEASED VESSEL

Configurations are described for assisting in the execution of a percutaneous procedure while protecting the vascular pathway to the operational theater, which may comprise diseased tissue. A railed sheath may be controllably expandable and collapsible, and may comprise two or more elongate rail structures configured to assist in the distribution of loads to associated diseased tissue structures, while also contributing to the deployment of percutaneous tools by maintaining alignment of such tools with the railed catheter and associated anatomy. 1. A system for deploying a device to a distal location across a diseased vessel , comprising:a railed expandable sheath defining a lumen therethrough and comprising two or more longitudinal rail structures coupled to a sheetlike member, the sheath having a collapsed configuration, wherein the sheath has a first cross sectional outer diameter and a first lumen inner diameter, and an expanded configuration, wherein the sheath has a second cross sectional outer diameter and a second lumen inner diameter;wherein in the collapsed configuration, the sheath is configured to be advanced across at least a portion of the diseased vessel to a position adjacent the distal location without substantial size interference between the first cross sectional outer diameter of the sheath and an inner diameter profile of a lumen of the diseased vessel; andwherein upon positioning the collapsed configuration to the desired position relative to the distal location, the sheath may be expanded to the expanded configuration with incremental pushing of a device longitudinally through the lumen such that loads imparted upon the sheath by the device are transferred to the rails and distributed to nearby portions of the diseased vessel in a deconcentrated and nonabrasive manner.2. The system of claim 1 , wherein the rail structures and sheetlike member comprise the same material.3. The system of claim 2 , wherein the rail structures and sheetlike member ...

EXPANDING DISTAL SHEATH WITH COMBINED EMBOLIC PROTECTION

A medical device may include an elongate shaft having a distal end portion and a balloon disposed at least partially within the distal end portion. The distal end portion may be configured to selectively expand from a collapsed delivery configuration to a distally-opening expanded filtering configuration. A method of deploying a medical device may include obtaining an elongate shaft having a distal end portion and a balloon disposed at least partially within the distal end portion, advancing the elongate shaft through a vessel to a treatment site, disposing at least a portion of the balloon within the treatment site with the distal end of the elongate shaft positioned adjacent the treatment site, at least partially inflating the balloon, thereby expanding the distal end portion, and deflating the balloon and subsequently performing a procedure with the distal end of the elongate shaft positioned within the vessel adjacent to the treatment site. 1. A medical device comprising:an elongate shaft having a proximal end, a distal end portion including a distal end, and a balloon disposed at least partially within the distal end portion;wherein the distal end portion is configured to selectively expand from a collapsed delivery configuration to a distally-opening expanded filtering configuration;wherein the distal end has a first outer diameter in the collapsed delivery configuration and a second outer diameter in the expanded filtering configuration.2. The medical device of claim 1 , wherein the distal end portion is configured to selectively expand in response to inflation of the balloon.3. The medical device of claim 2 , wherein the balloon expands the distal end to the second outer diameter.4. The medical device of claim 2 , wherein the balloon is configured to at least partially expand the distal end to at least an intermediate outer diameter claim 2 , wherein at an outer diameter larger than the intermediate outer diameter claim 2 , the distal end is self-biased ...

Stent and Stent Retrieval System and a Method of Pulling a Stent into a Tubular Member

A stent has an engagement member (). A stent retrieval system has a tubular member () and a retrieval member () with an engagement means (). The engagement member is attached to an end row of cells of the tubular stent body (). The cells in one annular row of cells are interconnected with the subsequent row of similarly oriented cells () at areas of interconnection () which in the subsequent annular row of cells are circumferentially offset with respect to the connections () between the cells in said subsequent annular row of cells. 1. A stent and stent retrieval system , said stent retrieval system comprising a tubular member with a lumen terminating in a distal end opening , and a retrieval member having an engagement mechanism , the tubular member and the retrieval member being mutually axially displaceable while the retrieval member extends in said lumen of the tubular member , said stent comprising an engagement member engagable with the engagement mechanism , and a tubular body having a plurality of annular rows of cells , with the annular rows being arranged axially one after the other , adjacent annular rows being joined together at interconnections , and adjacent cells within an annular row of cells being joined together at connections , the interconnections being circumferentially offset from the connections within a common annular row of cells , an end annular row of cells having first cell sides together forming a circumferentially closed loop with an attachment point that is circumferentially offset from the connections in the end annular row of cells , the engagement member being secured to the attachment point.2. A stent and stent retrieval system as in claim 1 , including at least three attachment points circumferentially spaced about said loop.3. A stent and stent retrieval system as in wherein said engagement member includes tie members extending from a junction to respective ones of said attachment points.4. A stent and stent retrieval system as ...

INTEGRATED STENT RETRIEVAL LOOP ADAPTED FOR SNARE REMOVAL AND/OR OPTIMIZED PURSE STRINGING

The present invention includes a braided stent and method of making the same. The braided stent has an integral retrieval and/or repositioning member. The stent includes a first open end, a second open end and a tubular body therebetween. The retrieval and/or repositioning member extends from and is interbraided into the braided tubular body. The retrieval and/or repositioning member includes an elongated portion extending from the first open end and a second section interlooping circumferentially about the first open end such that force exerted on the elongated portion causes radially contraction of the stent end and stent body. 1. A method comprising:forming a retrieval and/or repositioning member from a single wire, the retrieval and/or repositioning member comprising a first elongated loop; andbraiding the single wire with other wires to form a tubular braided stent having opposed first and second stent ends;wherein the retrieval and/or repositioning member extends above and beyond the first stent end to permit grabbing by a practitioner.2. The method of claim 1 , wherein braiding includes interweaving the retrieval and/or repositioning loop circumferentially into the first stent end.3. The method of claim 1 , the first elongated loop being a first section of the single wire claim 1 , the elongate loop formed by wrapping the single wire around template pins positioned on a mandrel to form the elongate loop.4. The method of claim 3 , further comprising bending the first elongated loop to form a bent hook portion extending outwardly from the stent.5. The method of claim 4 , wherein the first elongated loop is angularly bent and extended from the mandrel.6. The method of claim 3 , the single wire further comprising a second section claim 3 , the second section wrapped perimetrically about the mandrel to form a circumference of the first stent end.7. The method of claim 2 , further comprising bending the first elongated loop to form a bent hook portion extending ...

VASCULAR IMPLANT AND DELIVERY SYSTEM

A vascular implant for replacing a native heart valve comprises a self expanding stent supporting a valve body having leaflets. The stent preferably comprises an anchoring structure configured to prevent the implant from passing through the valve annulus. For delivery, the implant is compacted within a delivery device and secured at one end. During delivery the implant is partially released from the delivery device, and positioning of the implant can be verified prior to full release. The implant can be at least partially resheathed and repositioned if desired. 1. A method of delivering a replacement valve to a native mitral valve and securing the replacement valve relative to a native mitral valve annulus , the method comprising:delivering a replacement valve mounted on a delivery device to the native mitral valve annulus while the replacement valve is in a radially compacted state, the replacement valve comprising a radially expandable frame and a plurality of first anchors extending from the frame;positioning the replacement valve so that the plurality of first anchors are on a ventricular side of the native mitral valve annulus;releasing a portion of the replacement valve from the delivery device so that the portion of the replacement valve at least partially radially expands and the plurality of first anchors on the portion are positioned radially from the delivery device;moving the replacement valve toward the native mitral valve so that the plurality of first anchors engage tissue on a ventricular side of the native mitral valve annulus; andwith the plurality of first anchors engaging tissue on the ventricular side of the native mitral valve annulus, further releasing the replacement valve from the delivery device and expanding the frame to a radially expanded state.2. The method of claim 1 , wherein engaging tissue on the ventricular side of the native mitral valve annulus further comprises engaging the ventricular side of the native mitral valve annulus ...

STENT GRAFTS FOR THE THORACIC AORTA

A method of temporarily reducing the diameter of a stent graft () and a stent graft with its diameter reduced. The stent graft has a tubular body and self expanding stents. The method comprising extending a release wire () part helically along the graft material tube from substantially one side of the graft material tube at one end () of the graft material tube to substantially the opposite side of the graft material tube at the other end () of the graft material tube along the stent graft and stitching the release wire into the graft material tube, at each of a number of positions along the release wire looping flexible threads () around the release wire and extending the flexible threads laterally around the circumference of the stent graft in each direction to a position away from the release wire, engaging the first flexible threads into the graft material or around struts of the stent, and drawing the ends of the thread together and tying ends of the thread to thereby temporarily reduce the overall diameter of the stent graft. 1. A method of temporarily reducing the diameter of a stent graft at a plurality of positions along the stent graft , the stent graft comprising a tubular body of a biocompatible graft material and having a proximal end and a distal end and a self expanding stent framework extending from the proximal end to the distal end and supporting the graft material , the method comprising the steps of;a) extending at least one release wire longitudinally and in a single half circumferential turn along the stent graft from substantially one side of the stent graft at the proximal end of the stent graft to substantially the opposite side of the stent graft at the distal end of the stent graft along the length of the stent graft;b) stitching the at least one release wire into the graft material;c) providing a plurality of diameter reducing segments at each of a plurality of positions along the length of the at least one release wire;d) engaging each ...

Device for and Method of Loading Stents Into Delivery Tubes

A stent loading device is configured to perform a method of loading a stent into a delivery tube that comprises loading a stent into an opening of a crimping device. The stent has an initial uncompressed diameter. The method further comprises crimping the stent via the crimping device in a manner reducing the diameter of the stent from the initial diameter. Still further, the method comprises forcing the stent out of the opening of the crimping device and into a passageway of a delivery tube while oscillating the crimping device. The passageway of the delivery tube has a diameter that is less than the initial diameter of the stent and receives the stent in its compressed state. 1. A method of loading a stent into a delivery tube , the method comprising:loading a stent into an opening of a crimping device, the stent having an initial diameter;crimping the stent via the crimping device in a manner reducing the diameter of the stent from the initial diameter; andforcing the stent out of the opening of the crimping device and into a passageway of a delivery tube while oscillating the diameter of the opening of the crimping device, the passageway of the delivery tube having a diameter that is less than the initial diameter of the stent.2. A method in accordance with wherein the crimping device forms a portion of a stent loading device and the stent loading device comprises a programmable control system that causes the oscillation of the diameter of the opening of the crimping device.3. A method in accordance with wherein the stent loading device comprises a motor driven threaded member that is functionally connected to the crimping device to adjust the diameter of the opening of the crimping device claim 2 , and the programmable control system limits the amplitude of the oscillations of the diameter of the opening of the crimping device by monitoring and limiting the degree to which the threaded member rotates during the oscillations.4. A method in accordance with ...

Support Structure For An Endoprothesis, An Endoprotheses And Associated Methods

The disclosure is related to an endoprothesis, such as a stent. The disclosure also relates to a support structure for an endoprothesis and methods of delivering such an endoprothesis as well as a method of manufacturing a support structure. Furthermore, the disclosure provides an improved positioning of an endoprothesis and overcomes the folding issues and thus improves the flow through a body vessel. One embodiment provides a tubular support structure for avoiding folding of an endoprothesis, such as a stent or a valve, comprising one or more first circumferential zigzag patterns, at least two second circumferential zigzag patterns and wherein the first and second circumferential zigzag patterns are overlapping. 1. A tubular support structure for avoiding folding of an endoprothesis , such as a stent or a valve , comprising:one or more first circumferential zigzag patterns;at least two second circumferential zigzag patterns; and whereinsaid first and second circumferential zigzag patterns are overlapping.2. The tubular support structure of claim 1 , whereinsaid one or more first circumferential zigzag patterns comprises struts of a first size, such as a length and/or a diameter,and wherein said at least two second circumferential zigzag patterns form at least a first and a second section of said tubular support structure, andwherein each of said second circumferential zigzag patterns comprises struts of a second size, such as a length and/or a diameter, said second size being different, preferably smaller then said first size, and whereinsub portions of said struts of said first size are connecting said first and second section of said support structure, such that said folding is avoided by said differently sized struts.3. The tubular support structure of claim 1 , whereinsaid one or more first circumferential zigzag patterns and said at least two second circumferential zigzag patterns are integrated in the same cylindrical plane, wherebyportions of said one or ...

CIRCUMFERENTIAL TRIGGER WIRE FOR DEPLOYING AN ENDOLUMINAL PROSTHESIS

A deployment device for deploying an expandable endoluminal prosthesis within a body vessel may include an elongate member extending longitudinally along at least a portion of a length of the deployment device. The deployment device may include at least one engagement member coupled to the elongate member and extending outwardly from the elongate member. The deployment device may include a circumferential trigger wire extending at least partially circumferentially around the elongate member and removably received between the engagement member and the elongate member. The circumferential trigger wire may be manipulatable from a distal end of the deployment device, whereby the circumferential trigger wire is removable from between the engagement member and the elongate member. 1. A deployment device for deploying an expandable endoluminal prosthesis within a body vessel , the deployment device comprising:an elongate member extending longitudinally along at least a portion of a length of the deployment device;at least one engagement member coupled to the elongate member and extending outwardly from the elongate member; anda circumferential trigger wire extending at least partially circumferentially around the elongate member and removably received between the engagement member and the elongate member;wherein the circumferential trigger wire is manipulatable from a distal end of the deployment device, whereby the circumferential trigger wire is removable from between the engagement member and the elongate member.2. The deployment device of claim 1 , further comprising at least one axial trigger wire extending longitudinally along at least a portion of the length of the deployment device claim 1 , a proximal portion of the axial trigger wire comprising the engagement member.3. The deployment device of claim 2 , wherein the elongate member comprises a tubular member; the axial trigger wire is received within the tubular member claim 2 , exits the tubular member at a first ...

STENT GRAFTS FOR THE THORACIC AORTA

A method of temporarily reducing the diameter of a stent graft () and a stent graft with its diameter reduced. The stent graft has a tubular body and self expanding stents. The method comprising extending a release wire () part helically along the graft material tube from substantially one side of the graft material tube at one end () of the graft material tube to substantially the opposite side of the graft material tube at the other end () of the graft material tube along the stent graft and stitching the release wire into the graft material tube, at each of a number of positions along the release wire looping flexible threads () around the release wire and extending the flexible threads laterally around the circumference of the stent graft in each direction to a position away from the release wire, engaging the first flexible threads into the graft material or around struts of the stent, and drawing the ends of the thread together and tying ends of the thread to thereby temporarily reduce the overall diameter of the stent graft. 1. A system for temporarily reducing the diameter of a stent graft , the system comprising:a stent graft of biocompatible graft material having a first end, a second end, self expanding stent framework fastened to the graft material and supporting the graft material along its length;a stent graft diameter reduction arrangement comprising at least one release wire and a plurality of diameter reducing tie segments on the stent graft from the first end to the second end, the release wire extending longitudinally and in a single half circumferential turn along the stent graft from substantially one side of the stent graft at the first end of the stent graft to substantially an opposite side of the stent graft at the second end of the stent graft;wherein the plurality of diameter reducing tie segments are longitudinally spaced from one another and at least partially circumferentially offset from one another such that the segments substantially ...

SYSTEM AND METHOD FOR DELIVERING A STENT TO A SELECTED POSITION WITHIN A LUMEN

A method for determining and graphically marking a position within a lumen of the body of a patient indicative of occlusion includes providing a user interface, using a processor, configured to allow a user to select an occlusion percentage threshold, determining, using the processor, a percentage of occlusion in the lumen, comparing, using the processor, the determined percentage of occlusion with the selected occlusion percentage threshold and identifying a region of the lumen that is occluded more than the selected occlusion percentage threshold, and designating, using the processor, the identified region on an image of the lumen with at least one mark. 14.-. (canceled)5. A method for determining and graphically marking a position within a lumen of the body of a patient indicative of occlusion , said method comprising:providing a user interface, using a processor, configured to allow a user to select an occlusion percentage threshold;determining, using the processor, a percentage of occlusion in the lumen;comparing, using the processor, the determined percentage of occlusion with the selected occlusion percentage threshold and identifying a region of the lumen that is occluded more than the selected occlusion percentage threshold; anddesignating, using the processor, the identified region on an image of the lumen with at least one mark.6. A system for determining and graphically marking a position within a lumen of the body of a patient indicative of occlusion , comprising:a user interface configured to allow a user to select an occlusion percentage threshold; and determine a percentage of occlusion in the lumen;', 'compare the determined percentage of occlusion with the selected occlusion percentage threshold and identifying a region of the lumen that is occluded more than the selected occlusion percentage threshold; and', 'designate the identified region on an image of the lumen with at least one mark., 'a processor coupled to said user interface configured to7 ...

Delivery system for staged stent release

A prosthesis introducer system may include an introducer. A trigger wire release mechanism and a restraining member may be positioned near the distal end of the introducer. The system may include first and second trigger wires, each including a proximal portion releasably coupleable to a portion of a prosthesis and a distal portion coupled to the trigger wire release mechanism. The second trigger wire may be engaged by the restraining member. Each of the first and second trigger wires may include a taut portion. The second trigger wire may include a slack portion extending distally from the taut portion and positioned distal of the restraining member. Upon actuation of the trigger wire release mechanism, the first trigger wire may be releasable from the prosthesis and the second trigger wire may be releasable subsequent to the release of the first trigger wire.

Flared Ostial Endoprosthesis and Delivery System

An intraluminal endoprosthesis having a conically shaped first end and a tubular shaped balloon-expandable stent for a main body is disclosed. The conically shaped first end may form a flare to the main body and is particularly well suited for in ostium use. The first end is preferably self-expanding and the main body is preferably balloon-expandable. Also disclosed is a delivery device for delivering intraluminal ostial endoprosthetic devices, especially those disclosed herein, to a site for deployment. The delivery device may comprise an over-the-wire system or may comprise a rapid-exchange shuttle system. The self-expanding portion of the endoprosthesis is encapsulated in a sheath or other restraining apparatus on the delivery device. The balloon-expandable stent portion of the endoprosthesis is crimped onto a balloon delivery device. The delivery system and endoprosthesis of the present invention allow the endoprosthesis to be partially expanded and relocated if it is determined that it is not located in the proper location. To aid in positioning, the delivery device may comprise marker bands. 111-. (canceled)12. An apparatus for delivering to an intralumen site an endoprosthesis having a self-expanding region and a balloon-expandable section , the apparatus comprising:a distal region;a balloon delivery device that encapsulates at least a portion of the distal region and on which the balloon-expandable stent section is crimped;a pull-back sheath for encapsulating at least a portion of the self-expanding region, the pull-back sheath surrounding part of the distal region of the apparatus; andone or more marker bands located on the distal region for locating the position of the balloon-expandable section when the endoprosthesis is in a lumen of a vessel.13. The apparatus of claim 12 , wherein one marker band is distinguishable from another when the delivery device is in a lumen of a vessel.14. The apparatus of or claim 12 , further comprising a guidewire and ...

Non-compliant multilayered balloon for a catheter

Balloon catheter comprises an elongate catheter shaft having a proximal section, a distal section, and an inflation lumen, and a multilayer balloon on the distal section of the shaft. The multilayer balloon comprises at least a first layer and a second layer having a combined wall thickness and an outer-most layer. The first layer is made of a first polymer material having a first maximum blow-up-ratio. The second layer is made of a second polymer material having a second maximum blow-up-ratio greater than the first maximum blow-up-ratio and the second layer is an inner layer relative to the first layer. The at least first and second layers define a compliance less than that of a single layer balloon made of the first polymer material with a wall thickness equal to the combined wall thickness. The outer-most layer is made of a third polymer material.

SYSTEM AND METHOD FOR DELIVERING AND DEPLOYING AN OCCLUDING DEVICE WITHIN A VESSEL

A system and method for deploying an occluding device that can be used to remodel an aneurysm within the vessel by, for example, neck reconstruction or balloon remodeling. The system comprises an introducer sheath and an assembly for carrying the occluding device. The assembly includes an elongated flexible member having an occluding device retaining member for receiving a first end of the occluding device, a proximally positioned retaining member for engaging a second end of the occluding device and a support surrounding a portion of the elongated flexible member over which the occluding device can be positioned. 119-. (canceled)20. A method for introducing a stent within a vessel , said method comprising:introducing a delivery assembly into a catheter, the delivery assembly comprising (i) an elongate flexible member; and (ii) a retaining member having an inner lumen that extends around a circumference of a distal portion of the elongate member, the lumen receiving a first end of the stent to secure a portion of the stent in the retaining member;positioning an end of the catheter proximate an aneurysm;advancing at least a portion of the delivery assembly out of the catheter;expanding at least a portion of the stent by applying a force against an internal portion of the stent;rotating the retaining member relative to the stent, whereby the first end moves proximally relative to the retaining member and is released from within the lumen.21. The method of claim 20 , wherein the force comprises a pressure that is applied as the delivery assembly is advanced out of said catheter.22. The method of claim 20 , wherein the force comprises a pressure that is applied via the catheter.23. The method according to claim 20 , wherein the stent is a self-expanding device.24. The method according to claim 20 , wherein the retaining member comprises a protective coil.25. The method according to claim 20 , wherein the first end of the stent is biased radially outwardly against the ...

STENT DELIVERY SYSTEM

A stent delivery system includes a self-expanding stent, an inner tube body, and a sheath whose distal portion contains the stent. The stent can be discharged by moving the sheath proximally relative to the inner tube body. The inner tube body includes a distal contact section provided relative to a proximal portion of the stent and does not enter side wall openings of the stent; and a proximal contact section located at a position rear of the proximal end of the stent and close to the distal contact section. The stent has a proximal inwardly protruding section which can make contact with the distal contact section of the inner tube body. The proximal inwardly protruding section is located between the distal contact section and the proximal contact section. The stent does not, except in the proximal portion thereof, have a substantially bent, free end which protrudes towards the proximal side. 1. A stent delivery system comprising:a stent having a distal portion, a proximal portion, and a multiplicity of side wall openings, formed in a substantially hollow cylindrical shape, compressed toward a center axis thereof when inserted into a living body, and restorable into a pre-compression shape by expanding outward when indwelled in the living body;an inner tube body having a guide wire lumen;a stent-containing tube body having a distal side and a proximal side and which contains the stent in a distal portion thereof, the stent covering a distal portion of the inner tube body, and the stent being dischargeable by moving the stent-containing tube body toward the proximal side relative to the inner tube body;the inner tube body including a distal contact section which is located relative to a proximal portion of the stent and which does not enter the side wall openings of the stent, and a proximal contact section which is disposed at a position rearward of a proximal end of the stent and close to the distal contact section and which is capable of making contact with the ...