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Небесная энциклопедия

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

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Мониторинг СМИ

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

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 12265. Отображено 100.
09-02-2012 дата публикации

Methods for applying a skin graft

Номер: US20120035619A1
Принадлежит: Momelan Technologies Inc

The present invention generally relates to methods for applying a skin graft. Methods of the invention involve harvesting an epidermal skin graft, and applying the epidermal skin graft to a recipient site such that the basal layer of the skin graft makes direct contact with the recipient site.

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09-02-2012 дата публикации

Biodegradable implant and method for manufacturing same

Номер: US20120035740A1
Принадлежит: U&I CORP

This invention relates to a biodegradable implant including magnesium, wherein the magnesium contains, as impurities, (i) manganese (Mn); and (ii) one selected from the group consisting of iron (Fe), nickel (Ni) and mixtures of iron (Fe) and nickel (Ni), wherein the impurities satisfy the following condition: 0</(i)≦5, and an amount of the impurities is 1 part by weight or less but exceeding 0 parts by weight based on 100 parts by weight of the magnesium, and to a method of manufacturing the same.

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23-02-2012 дата публикации

Plasma modification of metal surfaces

Номер: US20120046735A1
Принадлежит: Intezyne Technologies Inc

The present invention provides modified metal surfaces, methods of preparing the same, and intermediates thereto. These materials are useful in a variety of applications including biomaterials.

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15-03-2012 дата публикации

Method of Making Porous Metal Articles

Номер: US20120065739A1
Принадлежит: Praxis Powder Technology Inc

In one embodiment, the present invention may be a method of making a porous biocompatible metal article by combining a metal powder with a homogenizing aid to form metal granules, including blending the metal granules and an extractable particulate to form a composite, forming the composite into a green article, removing the extractable particulate from the green article to form a metal matrix and pore structure, and sintering the metal matrix and pore structure. Furthermore the present invention may include a second homogenizing aid combined with the extractable particulate. The present invention also includes shaping the metal matrix and pore structure with or without the use of a binder.

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24-05-2012 дата публикации

Preparation of bone cement compositions

Номер: US20120129761A1
Принадлежит: Bone Support AB

A method for the preparation of injectable ready-to-use paste bone cement compositions by mixing a dry inorganic bone cement powder comprising a particulate calcium sulfate hemihydrate capable of hardening in vivo by hydration of the calcium sulfate hemihydrate forming calcium sulfate dihydrate, an aqueous liquid and an additive that normally retards the setting process, said method comprising a) providing a bone cement powder comprising calcium sulfate hemihydrate, an accelerator for the hardening of the calcium sulfate hemihydrate by hydration, said accelerator being selected from the group consisting of saline and calcium sulfate dihydrate, and a powdered calcium phosphate component b) mixing the bone cement powder with the aqueous liquid for a period of time c) leaving the mixture for the time needed for allowing the hydration reaction of the calcium sulfate hemihydrate to proceed and allowing calcium sulfate dihydrate crystals to form and grow, and d) admixing the additive by means of a short-duration mixing using a minimum of energy surprisingly shortens the setting times for the cement comprising the additive that retard the setting process to the level observed in the absence of the additive and enables a complete hydration of calcium sulfate hemihydrate to calcium sulfate dihydrate, even when using additives else preventing the hardening.

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07-06-2012 дата публикации

Cell coated implantable device

Номер: US20120141562A1

The present invention relates, in general, to a cell-coated implantable medical device and, in particular, to an implantable medical device the blood-contacting surfaces of which are coated with endothelial progenitor cells (EPCs). In a preferred embodiment, the medical device is a titanium or titanium alloy-based medical device.

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07-06-2012 дата публикации

Magnesium-Based Absorbable Implants

Номер: US20120143227A1
Принадлежит: Zorion Medical Inc

A bioabsorbable implant including an elongated metallic element comprising an alloy of more than about 70% by weight magnesium and about 2-20% by weight lithium, substantially free of rare earth metals. An implantable tissue filler includes a particulate material suspended in a carrier, comprising more than about 70% by weight magnesium and about 2-20% by weight lithium, substantially free of rare earth metals. A bioabsorbable implant includes an elongated metallic element having a core and at least two layers of alternating compositions of magnesium, iron, and alloys thereof. A bioabsorbable implant includes at least three wires including magnesium and defining a cylindrical sheath surrounding at least one core wire including iron. A bioabsorbable implant includes a plurality of intertwined magnesium alloy wires defining a strand, with an Fe-rich layer formed by vapor, chemical and/or electro-deposition defined on a surface of at least one of the wires.

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27-09-2012 дата публикации

Mesh enclosed tissue constructs

Номер: US20120244617A1
Принадлежит: UNIVERSITY OF CALIFORNIA

Described is a scaffold that is strong enough to resist forces that exist inside a body, while possessing biocompatible surfaces. The scaffold is formed of a layer of mesh (e.g., Stainless Steel or Nitinol) that is tightly enclosed by a multi-layer biological matrix. The biological matrix can include three layers, such a first layer (smooth muscle cells) formed directly on the metal mesh, a second layer (fibroblast/myofibroblast cells) formed on the first layer, and a third layer (endothelial cells) formed on the second layer. The scaffold can be formed to operate as a variety of tissues, such as a heart valve or a vascular graft. For example, the mesh and corresponding biological matrix can be formed as leaflets, such that the scaffold is operable as a tissue heart valve.

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25-10-2012 дата публикации

Bioactively Coated Metal Implants and Methods for the Production Thereof

Номер: US20120271431A1
Принадлежит: InnoTERE GmbH

The invention relates to methods for producing a partial or complete bioactive coating of an iron and/or zinc based metal implant material with calcium phosphates, a bioactively coated iron and/or zinc based metal implant, which is partially or completely coated with calcium phosphates, and bone implants containing an implant material according to the invention. In order to produce the coating according to the invention, iron and/or zinc based metal implant materials are brought in contact with acidic aqueous solutions, which have a pH value of 6.0 or less and contain calcium phosphates, whereby a calcium phosphate layer is deposited on the surface of the implant materials. The iron and/or zinc based metal implant materials, which are used in methods according to the invention, are materials consisting of base iron alloys or pure iron or materials that contain other substances, which are coated with pure iron, with a base iron alloy and/or with zinc.

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15-11-2012 дата публикации

Biocompatible component

Номер: US20120288699A1
Принадлежит: Individual

The invention provides a biocompatible component having a surface intended for contact with living tissue, wherein the surface comprises particles of metal oxide, said particles having an average particle size of less than 100 nm. A method for the production of such biocompatible component is also provided. It was found that the bioactivity of the biocompatible component was increased compare to a reference in that it induced earlier apatite nucleation in vitro. It is believed that by the biocompatible component may induce early hydroxyapatite nucleation in vivo and thus promote osseointegration of an implant.

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06-12-2012 дата публикации

In-situ intervertebral fusion device and method

Номер: US20120310352A1
Принадлежит: DePuy Spine LLC

An orthopedic device for implanting between adjacent vertebrae comprising: an arcuate balloon and a hardenable material within said balloon. In some embodiments, the balloon has a footprint that substantially corresponds to a perimeter of a vertebral endplate. An inflatable device is inserted through a cannula into an intervertebral space and oriented so that, upon expansion, a natural angle between vertebrae will be at least partially restored. At least one component selected from the group consisting of a load-bearing component and an osteobiologic component is directed into the inflatable device through a fluid communication means.

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03-01-2013 дата публикации

Cell support and bone regeneration material

Номер: US20130004549A1
Принадлежит: Fujifilm Corp

An object of the present invention is to provide a three-dimensional cell support that is capable of uniformly distributing cells and retaining the cells in a state without nonuniformity and is made of a biodegradable material. The present invention provides a cell support consisting of a porous body made of a biodegradable material, the porous body having the following properties: (a) a porosity from 81% to 99.99%, (b) an average pore size of 10 to 400 μm, (c) having a hole interconnecting pores, and (d) a water absorption rate from 1000% to 9900%.

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10-01-2013 дата публикации

Stent for connecting adjacent tissues of organs

Номер: US20130012969A1
Автор: Kyong-Min Shin
Принадлежит: Individual

Disclosed herein is a stent for connecting adjacent tissues of the organs of a patient. The stent includes a hollow cylindrical body which is formed by weaving a superelastic shape-memory alloy wire in an overlapping manner such that rhombic openings are formed, and wing parts which are provided by expanding respective opposite ends of the hollow cylindrical body outwards and turning the opposite ends inside out on bent portions. The wing parts face each other so that the wing parts are tensed in a longitudinal direction of the cylindrical body. Thereby, the wing parts can elastically move inwards or outwards with respect to the longitudinal direction to automatically adjust a distance between the wing parts in response to the distance between the adjacent tissues of the organs or thicknesses of walls of the organs, so that the wing parts are put into close contact with the adjacent tissues.

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07-02-2013 дата публикации

Culture medium

Номер: US20130034904A1
Автор: Chen Feng, Li Fan, Wen-Mei Zhao

A culture medium is used for culturing neural cells. Each neural cell includes a neural cell body and at least one neurite branched from the neural cell body. The culture medium includes a substrate and a carbon nanotube structure located on the substrate. The carbon nanotube structure includes a number of carbon nanotube wires spaced apart from each other. A distance between adjacent carbon nanotube wires is greater than or equal to diameters of the neural cell bodies. The carbon nanotube wires are capable of guiding extending directions of the neurites.

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14-02-2013 дата публикации

In vivo sensor and method of making same

Номер: US20130041251A1
Принадлежит: Advanced Bio Prosthetic Surfaces Ltd

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.

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14-03-2013 дата публикации

Multicomponent and biocompatible nanocomposite materials, methods of synthesizing same and applications of same

Номер: US20130064863A1
Принадлежит: University of Arkansas

One aspect of the present invention relates to a method of synthesizing a multicomponent and biocompatible nanocomposite material, which includes: synthesizing a gold/hydroxyapatite (Au/HA) catalyst; distributing the Au/HA catalyst into a thin film; and heating the thin film in a reactor with a carbon source gas to perform radio frequency chemical vapor deposition (RF-CVD) to form the nanocomposite material, where the nanocomposite material includes a graphene structure and Au/HA nanoparticles formed by the Au/HA catalyst and distributed within the graphene structure. In another aspect, a multicomponent and biocompatible nanocomposite material includes: a graphene structure formed with a plurality of graphene layers and Au/HA nanoparticles distributed within the graphene structure. The nanocomposite material is formed by heating an Au/HA catalyst thin film with a carbon source gas to perform radio frequency chemical vapor deposition (RF-CVD).

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18-04-2013 дата публикации

Ultraviolet light absorbing materials for intraocular lens and uses thereof

Номер: US20130096273A1
Принадлежит: Benz Research and Development Corp

A method for reducing the transmittance of ultraviolet radiation through an intraocular lens to 10% or less at 370 mm Additionally, a method for preventing the transmittance of at least 90% of ultraviolet radiation at 370 nm through a foldable intraocular lens comprising: (a) incorporating a monomer comprising a 4-(4,6-diphenyl-1,3,5-triazin-2-yl)-3-hydroxyphenoxy moiety into at least one polymer and (b) forming the polymer into a material suitable for use as an intraocular lens, wherein the monomer comprising a 4-(4,6-diphenyl-1,3,5-triazin-2-yl)-3-hydroxyphenoxy moiety comprises 0.10 to 0.15 weight percent of the overall dry polymer.

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25-04-2013 дата публикации

Method For Restoring Alveolar Bone Via Transplant of a Regenerated Tooth Unit

Номер: US20130101951A1
Принадлежит: Organ Technologies Inc

The object of the present invention is to provide a method for restoring the alveolar bone of a mammal with a missing tooth. The present invention provides a method for restoring the alveolar bone in a mammal with a missing tooth comprising a step of transplanting a regenerated tooth unit to the said missing site. The regenerated tooth unit is characterized in that it has a periodontal tissue portion in addition to a tooth crown portion.

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25-04-2013 дата публикации

Biocompatible extremely fine tantalum fiber scaffolding for bone and soft tissue prosthesis

Номер: US20130103165A1
Автор: James Wong
Принадлежит: Composite Materials Technology Inc

A tissue implant member for implanting in living tissue is provided. The implant is formed of a fibrous mat of tantalum filament having a diameter less than about 10 microns.

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02-05-2013 дата публикации

Hard-tissue implant

Номер: US20130110255A1
Принадлежит: Individual

Hard-tissue implants are provided that include a bulk implant, a face, pillars, and slots. The pillars are for implantation into a hard tissue. The slots are to be occupied by the hard tissue. The hard-tissue implant has a Young's modulus of elasticity of at least 10 GPa, has a ratio of the sum of (i) the volumes of the slots to (ii) the sum of the volumes of the pillars and the volumes of the slots of 0.40:1 to 0.90:1, does not comprise any part that is hollow, and does not comprise any non-pillar part extending to or beyond the distal ends of any of the pillars. Methods of making and using hard-tissue implants are also provided.

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09-05-2013 дата публикации

Multilayered protective coating for protecting metallic surfaces of implant materials and use thereof

Номер: US20130115421A1
Принадлежит: UNIWERSYTET JAGIELLONSKI

There is disclosed a multilayered protective coating and use thereof, the protective coating comprising of at least an inner silane layer and an outer parylene layer, for protecting metallic surfaces of implant materials from corrosion processes and release of heavy metal ions from implant into a patient's organism.

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23-05-2013 дата публикации

MAGNESIUM-BASED MEDICAL DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20130129908A1

A magnesium-based medical device which can adjust a degree of corrosion within a wide range of period such that the device can maintain a sufficient strength only during a desired period and disappears within a desired period thereafter and a manufacturing method thereof are provided. A magnesium-based medical device of the present invention is a magnesium-based medical device in which a base material is made of magnesium or a magnesium alloy, wherein a corrosion-resistant film is formed on a surface of the base material, and variation in surface hardness of the formed corrosion-resistant film in the in-plane direction is less than 21 in terms of a dispersion value of Vickers hardness. 19-. (canceled)10. A manufacturing method of a magnesium-based medical device , the magnesium-based medical device having a base material made of magnesium or a magnesium alloy and is dissolved and disappears in a living body , wherein a corrosion-resistant film is formed on a surface of the base material , and variation in a numerical value of hardness of the formed film expressed in terms of Vickers hardness is controlled corresponding to the desired corrosion resistance ,the method comprising:immersing the base material in a solution in which components for forming the corrosion-resistant film are dissolved;in a state that the base material is immersed in a solution, depositing a corrosion-resistant film on the surface of the base material by generating a flow of the solution which has a flow speed relative to the surface of the base material; andcontrolling the flow speed of the solution relative to the surface of the base material.11. The manufacturing method of claim 10 , wherein a degree of variation in a numerical value of hardness of the formed corrosion-resistant film which is expressed in terms of Vickers hardness in the in-plane direction is adjusted by controlling the flow speed of the solution relative to the surface of the base material.12. The manufacturing method of ...

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23-05-2013 дата публикации

Porous metal device for regenerating soft tissue-to-bone interface

Номер: US20130131699A1
Принадлежит: Zimmer Inc

The present disclosure relates, in some aspects, to orthopaedic implants for securing soft tissue to bone and methods for using the same. One particular implant comprises a first exposed porous surface region, having pores for promoting bone ingrowth, and a second exposed porous surface, having pores for promoting soft tissue ingrowth. At least some of the pores of the first exposed porous surface region may be seeded with osteocytic factors and at least some of the pores of the second exposed porous surface region may be seeded with fibrocytic factors. Such orthopaedic implants can advantageously facilitate regeneration of the soft tissue to bone interface.

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23-05-2013 дата публикации

Porous coatings for orthopedic implants

Номер: US20130131824A1
Принадлежит: Hitemco Medical Application Inc

A high-purity porous metal coating is formed over a substrate by thermal spraying a metal coating material over the desired portion of the substrate in an atmospheric air environment. The metal coating material may react with the atmosphere to cause impurities in the applied coating. The impurity-rich portion of the applied coating is subsequently removed to form the high-purity porous metal coating. Process steps are included that cause the impurity-rich portion of the applied coating to be a surface portion that is removable to arrive at the high-purity coating. A protective shroud may be used to limit the amount of impurity imparted to the applied coating and/or a getter material may be employed to continually bring impurities toward the surface of the coated substrate during coating.

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23-05-2013 дата публикации

Cell induction material

Номер: US20130131829A1
Принадлежит: Hi Lex Corp

The object of the present invention is to provide a cell induction material, which can be easily formed, has excellent moldability because sintering is unnecessary, and decreases a strain on a human body caused by the exposure of the ends of a titanium wire. A metal mesh made by stockinette stitching with titanium wire is formed into a predetermined shape, and a cell induction material obtained by pressing the formed metal mesh is used. Further, the cell induction material with substantially no ends of the titanium wire that can be sensed through the sense in the vicinity of the surface is used.

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06-06-2013 дата публикации

Immobilized metallic nanoparticles as unique materials for therapeutic and biosensor applications

Номер: US20130142885A1

The present invention relates to compositions and methods by which surface modification techniques can be used to modify wide range polymeric or metal substrates using metal nanoparticles.

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06-06-2013 дата публикации

Bioabsorbable device having composite structure for accelerating degradation

Номер: US20130144376A1
Автор: George Landau, Vipul Dave
Принадлежит: Cordis Corp

A medical device has a structure made of a first biodegradable and/or bioabsorbable material and a second biodegradable and/or bioabsorbable material encapsulating a degradation additive incorporated into the first biodegradable and/or bioabsorbable material. The second biodegradable and/or bioabsorbable material has a degradation rate that is faster than the degradation rate of the first biodegradable and/or bioabsorbable material such that the structure experiences a period of accelerated degradation upon release of the degradation additive following sufficient degradation of the second biodegradable and/or bioabsorbable material.

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06-06-2013 дата публикации

Method and assembly of a pyrolytic carbon component attached to another component

Номер: US20130144394A1
Принадлежит: TORNIER SAS

A prosthetic assembly and a method of assembling same. The prosthetic assembly includes a base component with at least one engagement surface. A pyrolytic carbon component includes at least one engagement surface. The pyrolytic carbon component is elastically deformed to mechanically interlock with the engagement surface on the base component. The pyrolytic carbon component retains at least a portion of the deformation stress created during coupling with the base component.

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20-06-2013 дата публикации

STAINLESS STEEL ALLOYS FOR MAKING ENDOPROSTHESES

Номер: US20130156629A1
Автор: Blanzy Jeffrey S.
Принадлежит: W. L. Gore & Associates, Inc.

Stainless steel alloys for fabricating endoprostheses. Endoprostheses can include a variety of devices such as staples, orthodontic wires, heart valves, filter devices, and stents, many of which devices are diametrically expandable devices. 1. A stainless steel alloy comprising iron , 16.0-18.0 wt % chromium , 6.0-8.0 wt % nickel , 0.8-1.2 wt % tungsten , 0.6-0.9 wt % molybdenum , 0.2-0.3 wt % nitrogen , at most 2.0 wt % manganese , at most 0.75 wt % silicon , and at most 0.03 wt % carbon.2. The stainless steel alloy of claim 1 , further comprising phosphorus.3. The stainless steel alloy of claim 2 , further comprising at most 0.03 wt % phosphorus.4. The stainless steel alloy of claim 1 , further comprising sulfur.5. The stainless steel alloy of claim 4 , further comprising at most 0.02 wt % sulfur.6. The stainless steel alloy of claim 1 , further comprising 0.2-0.25 wt % nitrogen.7. The stainless steel alloy of claim 1 , comprising iron claim 1 , 16.0-18.0 wt % chromium claim 1 , 6.0-8.0 wt % nickel claim 1 , 0.8-1.2 wt % tungsten claim 1 , 0.6-0.9 wt % molybdenum claim 1 , 0.2-0.3 wt % nitrogen claim 1 , at most 2.0 wt % manganese claim 1 , at most 0.75 wt % silicon claim 1 , at most 0.03 wt % carbon claim 1 , at most 0.03 wt % phosphorus claim 1 , and at most 0.02 wt % sulfur.8. The stainless steel alloy of claim 7 , further comprising 0.2-0.25 wt % nitrogen.9. The stainless steel alloy of claim 7 , consisting of iron claim 7 , 16.0-18.0 wt % chromium claim 7 , 6.0-8.0 wt % nickel claim 7 , 0.8-1.2 wt % tungsten claim 7 , 0.6-0.9 wt % molybdenum claim 7 , 0.2-0.3 wt % nitrogen claim 7 , at most 2.0 wt % manganese claim 7 , at most 0.75 wt % silicon claim 7 , at most 0.03 wt % carbon claim 7 , at most 0.03 wt % phosphorus claim 7 , and at most 0.02 wt % sulfur.10. The stainless steel alloy of claim 9 , further comprising 0.2-0.25 wt % nitrogen.11. The stainless steel alloy of claim 1 , wherein the stainless steel alloy has a volume fraction of ferrite of 50% or ...

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11-07-2013 дата публикации

Polymers for intraocular lenses

Номер: US20130178555A1
Принадлежит: Benz Research and Development Corp

The present invention provides optic portions, intraocular lenses, and polymers for use in manufacturing optic portions and intraocular lenses. The optic portions include a polymer that comprises (a) one or more alkoxyalkyl methacrylate monomers and/or one or more alkoxyalkyl acrylate monomers that are incorporated in the polymer; (b) one or more hydroxyalkyl methacrylate monomers and/or one or more hydroxyalkyl acrylate monomers that are incorporated in the polymer; and (c) optionally, one or more crosslinking agents that are incorporated in the polymer.

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11-07-2013 дата публикации

System and Method for Attaching Soft Tissue To An Implant

Номер: US20130178942A1
Принадлежит: Individual

One embodiment of the present invention is directed to compositions and methods for enhancing attachment of soft tissues to a metal prosthetic device. In one embodiment a construct is provided comprising a metal implant having a porous metal region, wherein said porous region exhibits a nano-textured surface.

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25-07-2013 дата публикации

CROSS-LINKED BIOACTIVE HYDROGEL MATRICES

Номер: US20130189371A1
Принадлежит: PIONEER SURGICAL ORTHOBIOLOGICS, INC.

The present invention is directed to a stabilized cross-linked hydrogel matrix comprising a first high molecular weight component and a second high molecular weight component that are covalently linked, and at least one stabilizing or enhancing agent, wherein the first high molecular weight component and the second high molecular weight component are each selected from the group consisting of polyglycans and polypeptides. This stabilized hydrogel matrix may be prepared as bioactive gels, pastes, slurries, cell attachment scaffolds for implantable medical devices, and casting or binding materials suitable for the construction of medical devices. The intrinsic bioactivity of the hydrogel matrix makes it useful as a gel or paste in multiple applications, including as a cell attachment scaffold that promotes wound healing around an implanted device, as gels and pastes for induction of localized vasculogenesis, wound healing, tissue repair, and regeneration, as a wound adhesive, and for tissue bulking. 1. A bone implant material formed of a molded composition having a predetermined shape and comprising: a crosslinked bioactive hydrogel matrix comprising a polyglycan crosslinked to a polypeptide , and at least one enhancing agent selected from the group consisting of polar amino acids , intact collagen , divalent cation chelators , and combinations thereof; and an osteoinductive or osteoconductive material comprising hydroxyapatite.2. The bone implant material of claim 1 , wherein the polyglycan is a polysaccharide or a sulfated polysaccharide.3. The bone implant material of claim 2 , wherein the polyglycan is selected from the group consisting of glycosaminoglycans claim 2 , glucosaminoglycans claim 2 , dextran claim 2 , heparan claim 2 , heparin claim 2 , hyaluronic acid claim 2 , alginate claim 2 , agarose claim 2 , carageenan claim 2 , amylopectin claim 2 , amylose claim 2 , glycogen claim 2 , starch claim 2 , cellulose claim 2 , chitin claim 2 , heparan sulfate claim ...

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29-08-2013 дата публикации

Porous implant material

Номер: US20130226309A1
Принадлежит: Mitsubishi Materials Corp

Providing porous implant material having a strength property approximate to human bone, without arising stress shielding, and which is possible to maintain sufficient bound strength with human bone. Porous implant material has a porous metal body having a three-dimensional network structure formed from a continuous skeleton 2 in which a plurality of pores 3 are interconnected, wherein a porosity rate is 50% to 92%, the pores 3 are formed to have flat shapes which are long along a front surface and short along a direction orthogonal to the front surface, lengths Y of the pores 3 along the front surface are 1.2 times to 5 times of a length X orthogonal to the front surface, and a compressive strength compressing in the direction parallel to the front surface is 1.4 times to 5 times of a compressive strength compressing in the direction orthogonal to the front surface.

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05-09-2013 дата публикации

POROUS IMPLANT MATERIAL

Номер: US20130230738A1
Принадлежит: MITSUBISHI MATERIALS CORPORATION

Providing porous implant material having a strength property approximate to human bone, without arising stress shielding, and which is possible to maintain sufficient bound strength with human bone. Porous implant material according to the present invention has a plurality of porous metal bodies which are bonded with each other at bonded-boundary surface F parallel to a first direction, wherein each the porous metal body has a three-dimensional network structure formed from a continuous skeleton in which a plurality of pores are interconnected, a porosity rate is 50% to 92%, and a compressive strength compressing in a direction parallel to the bonded-boundary surface F is 1.4 times to 5 times of a compressive strength compressing in a direction orthogonal to the bonded-boundary surface F. 1. Porous implant material comprising a plurality of porous metal bodies which are bonded with each other at bonded-boundary surface parallel to a first direction , whereineach the porous metal body has a three-dimensional network structure formed from a continuous skeleton in which a plurality of pores are interconnected,a porosity rate is 50% to 92%, anda compressive strength compressing in a direction parallel to the bonded-boundary surface is 1.4 times to 5 times of a compressive strength compressing in a direction orthogonal to the bonded-boundary surface.2. The porous implant material according to claim 1 , whereinthe porous metal bodies are foam metal made by expanding and sintering after forming expandable slurry containing metal powder and expanding agent so as to have higher metallic density at a front surface than at a center part.3. The porous implant material according to claim 1 , whereinthe pores are formed to have flat shapes which are long along a direction parallel to the bonded-boundary surface and short along a direction orthogonal to the bonded-boundary surface, anda length along the bonded-boundary surface is 1.2 times to 5 times of a length orthogonal to the ...

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05-09-2013 дата публикации

Porous implant material

Номер: US20130231754A1
Принадлежит: Mitsubishi Materials Corp

A plurality of porous metal bodies which are bonded with each other at bonded-boundary surfaces parallel to a first direction, each of the porous metal bodies has a three-dimensional network structure formed from a continuous skeleton in which a plurality of pores are interconnected so as to have a porosity rate different from another porous metal body, the pores formed in at least the porous metal body having the higher porosity rate are formed to have flat shapes which are long along a direction parallel to the bonded-boundary surface and short along a direction orthogonal to the bonded-boundary surface, entire porosity rate of a bonded body of the porous metal bodies is 50% to 92%, a compressive strength compressing in the direction parallel to the bonded-boundary surface is 1.4 times to 5 times of a compressive strength compressing in the direction orthogonal to the bonded-boundary surface.

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03-10-2013 дата публикации

BONE REPAIR MATERIAL AND METHOD FOR PRODUCING THE SAME

Номер: US20130261765A1
Принадлежит: ADVANCED MEDIX INC.

A bone repair material being superior in apatite-forming ability and its stability in a storage and high in scratch resistance is disclosed. The material is produced by a method comprising the steps of: immersing a substrate made of titanium or a titanium alloy in a first aqueous solution that does not contain calcium ions but contains at least one cation selected from the group consisting of sodium ions and potassium ions and is alkaline; immersing the substrate in a second aqueous solution that does not contain phosphate ions but contains calcium ions; heating the substrate in a dry atmosphere; and treating the substrate with hot water of 60° C. or higher or with steam. 1a substrate made of titanium or a titanium alloy; anda titanate layer on the substrate, the titanate containing calcium whose concentration decreases with increasing depth from a surface of the layer,wherein the titanate layer exhibits a scratch resistance of 20 mN or more when vibration 100 μm in amplitude is added to a stylus with a spring constant of 200 g/mm and the stylus is moved at a rate of 10 mm/sec under the application of a load increasing at a rate of 100 mN/min, and the bone repair material has an ability that apatite is formed on the whole surface of the material within 3 days in a living body or in a simulated body fluid.. A bone repair material comprising: This application is a divisional of U.S. patent application Ser. No. 12/995,850, filed Dec. 2, 2010, which in turn is a U.S. National Stage entry of International Patent Application No. PCT/JP2009/002426, filed Jun. 1, 2009, which claims priority of Japanese Patent Application No. 2008-145794, filed Jun. 3, 2008, the entirety of each of which is incorporated herein by reference.The present invention relates to bone repair materials and methods for producing the same. These bone repair material can be used suitably for bone repair at a portion to which a large load is applied, such as the femur, the hip joint, the vertebra, and ...

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10-10-2013 дата публикации

MEDICAL MATERIAL AND METHOD FOR MANUFACTURING SAME

Номер: US20130266620A1
Принадлежит:

The present invention aims to provide a medical material which is safe for the live body, has high biocompatibility and is useful for promotion of cell differentiation. The present invention produces a medical material for promoting cell differentiation, which contains polyamino acid as a main component, wherein the polyamino acid contains at least one kind of amino acid residue selected from the group consisting of an alanine residue, a valine residue, a leucine residue, an isoleucine residue, a phenylalanine residue, a glycine residue, a glutamine residue, an aspartic acid residue optionally containing a protecting group in the side chain, a tyrosine residue optionally containing a protecting group in the side chain, a tryptophan residue optionally containing a protecting group in the side chain, a lysine residue optionally containing a protecting group in the side chain, and a glutamic acid residue optionally containing a protecting group in the side chain. 1. A method for promoting cell differentiation , which comprises(a) contacting a cell with a surface of a medical material comprising a polyamino acid and cultivating the cell, or(b) transplanting a medical material comprising a polyamino acid to a subject in need thereof,wherein the polyamino acid comprises at least one kind of amino acid residue selected from the group consisting of an alanine residue, a valine residue, a leucine residue, an isoleucine residue, a phenylalanine residue, a glycine residue, a glutamine residue, an aspartic acid residue optionally containing a protecting group in the side chain, a tyrosine residue optionally containing a protecting group in the side chain, a tryptophan residue optionally containing a protecting group in the side chain, a lysine residue optionally containing a protecting group in the side chain, and a glutamic acid residue optionally containing a protecting group in the side chain.2. The method according to claim 1 , wherein the polyamino acid is a copolymer ...

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17-10-2013 дата публикации

Injectable Cross-Linked Polymeric Preparations and Uses Thereof

Номер: US20130272969A1

A therapeutic composition for treatment of a body tissue which includes an aqueous solution of a cross-linked polymer being capable of: (i) maintaining a liquid state in storage at room temperature for at least 24 hours; and (ii) assuming a gel state following deposition within the body tissue. The therapeutic composition can be effectively administered into a damaged body tissue via injection or catheterization, thereby treating the damaged body tissue.

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07-11-2013 дата публикации

Antibacterial calcium-based materials

Номер: US20130295193A1
Принадлежит: NATIONAL CHENG KUNG UNIVERSITY

A preparation at least useful as a bone implant is provided, which contains a solid component including a lithium compound and a calcium compound. The preparation shows an anti-bacterial ability in comparison with a preparation contains the calcium compound but free of the lithium compound. 1. An anti-bacterial preparation comprising a solid component comprising a lithium compound and a calcium compound.2. The preparation of which shows an improved anti-bacterial ability in comparison with a preparation containing the calcium compound but free of the lithium compound.3. The preparation of wherein a Hanks' solution with the anti-bacterial preparation immersed therein in a ratio of solution:anti-bacterial preparation=10 cc/g exhibits a pH value of not less 10.4. The preparation of wherein the anti-bacterial preparation contains 5-80% of the lithium compound claim 1 , based on the weight of the solid component.5. The preparation of wherein the lithium compound is a lithium salt claim 1 , lithium oxide claim 1 , lithium amide (LiNH) claim 1 , lithium hydroxide or lithium halide.6. The preparation of wherein the lithium compound is lithium carbonate claim 1 , lithium sulfate claim 1 , lithium phosphate claim 1 , lithium oxide claim 1 , lithium fluoride claim 1 , lithium acetate claim 1 , lithium bromide claim 1 , lithium hydroxide claim 1 , lithium nitrate claim 1 , lithium nitrite claim 1 , lithium iodide claim 1 , lithium molybdate (LiMoO) claim 1 , lithium tetraborate (LiBO) claim 1 , lithium citrate tetrahydrate (LiCHO.4HO) claim 1 , or lithium stearate (LiCHO).7. The preparation of wherein the lithium compound is lithium carbonate claim 1 , or lithium phosphate.8. The preparation of wherein the solid component is a powder component comprising the lithium compound and the calcium compound claim 1 , wherein the calcium compound is selected from the group consisting of a calcium phosphate claim 1 , calcium sulfate claim 1 , calcium oxide claim 1 , calcium carbonate ...

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14-11-2013 дата публикации

MEDICAL DEVICE HAVING A SURFACE COMPRISING NANOPARTICLES

Номер: US20130302427A1
Принадлежит: DENTSPLY INTERNATIONAL INC.

A medical device has a surface intended for contact with living tissue, wherein the surface comprises nanoparticles comprising a non-toxic post-transition metal such as gallium and/or bismuth, said nanoparticles having an average particle size of 500 nm or Less. The nanoparticles may provide an antimicrobial effect, and thus the risk for infection may be reduced. 1. A medical device having a surface intended for contact with living tissue , wherein the surface comprises nanoparticles comprising a non-toxic post-transition metal , said nanoparticles having an average particle size of 500 nm or less.2. The medical device according to claim 1 , wherein said nanoparticles comprise bismuth.3. The medical device according to claim 1 , wherein said nanoparticles comprise gallium.4. The medical device according to claim 3 , wherein said nanoparticles comprise a gallium compound.5. The medical device according to claim 4 , wherein said gallium compound is selected from the group consisting of gallium oxide claim 4 , gallium nitride claim 4 , metal oxides comprising gallium and metal nitrides comprising gallium.6. The medical device according to claim 2 , wherein said nanoparticles comprise elemental bismuth or a bismuth compound.7. The medical device according to claim 6 , wherein said bismuth compound is selected from the group consisting of bismuth oxide claim 6 , bismuth nitride claim 6 , metal oxides comprising bismuth and metal nitrides comprising bismuth.8. The medical device according to claim 1 , wherein the nanoparticles have an average particle size of 100 nm or less.9. The medical device according to claim 1 , wherein said surface further comprises nanoparticles of titanium dioxide having an average particle size of 100 nm or less.10. The medical device according to claim 1 , wherein said nanoparticles form a layer.11. The medical device according to claim 10 , wherein said layer has a thickness in the range of from 8 nm to about 1 μm.12. The medical device ...

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14-11-2013 дата публикации

ANTIBACTERIAL BIOMEDICAL IMPLANTS AND ASSOCIATED MATERIALS, APPARATUS, AND METHODS

Номер: US20130302509A1
Принадлежит: Amedica Corporation

Methods for improving the antibacterial characteristics of biomedical implants and related implants manufactured according to such methods. In some implementations, a biomedical implant comprising a silicon nitride ceramic material may be subjected to a surface roughening treatment so as to increase a surface roughness of at least a portion of the biomedical implant to a roughness profile having an arithmetic average of at least about 500 nm Ra. In some implementations, a coating may be applied to a biomedical implant. Such a coating may comprise a silicon nitride ceramic material, and may be applied instead of, or in addition to, the surface roughening treatment process. 1. A method for improving the antibacterial characteristics of a biomedical implant , the method comprising the steps of:providing a biomedical implant;applying a coating to the biomedical implant, wherein the coating comprises a silicon nitride material; andincreasing a surface roughness of at least a portion of the biomedical implant to a roughness profile having an arithmetic average of at least about 500 nm Ra to improve the antibacterial characteristics of the biomedical implant.2. The method of claim 1 , wherein the coating comprises a thickness of between about 5 nanometers and about 5 millimeters.3. The method of claim 2 , wherein the coating comprises a thickness of between about 1 micrometer and about 125 micrometers.4. The method of claim 1 , wherein the biomedical implant comprises an intervertebral spinal implant.5. The method of claim 4 , wherein the intervertebral spinal implant comprises at least one of poly-ether-ether-ketone and titanium.6. The method of claim 1 , wherein the step of increasing a surface roughness of at least a portion of the biomedical implant is performed before the step of applying a coating to the biomedical implant.7. The method of claim 1 , wherein the step of increasing a surface roughness of at least a portion of the biomedical implant is performed after ...

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14-11-2013 дата публикации

METHODS FOR ALTERING THE SURFACE CHEMISTRY OF BIOMEDICAL IMPLANTS AND RELATED APPARATUS

Номер: US20130302512A1
Принадлежит: Amedica Corporation

Methods for improving the antibacterial characteristics of a biomedical implant. In some implementations, the method may comprise providing a biomedical implant material block. The biomedical implant material block may comprise a silicon nitride ceramic material. The surface chemistry of the biomedical implant material block may be altered to improve the antibacterial characteristics of the biomedical implant material block. In some implementations, the surface chemistry may be altered by firing the biomedical implant material block in a nitrogen-rich environment or otherwise increasing the nitrogen content in the transitional oxide layer of at least a portion of the biomedical implant material block. The surface of the biomedical implant material block may also, or alternatively, be roughened to improve antibacterial characteristics of the implant. 1. A method for improving the antibacterial characteristics of a biomedical implant , the method comprising the steps of:providing a biomedical implant material block, wherein the biomedical implant material block comprises a silicon nitride ceramic material; andaltering the surface chemistry of the biomedical implant material block to improve the antibacterial characteristics of the biomedical implant material block.2. The method of claim 1 , wherein the step of altering the surface chemistry of the biomedical implant material block comprises increasing the nitrogen content in the transitional oxide layer of at least a portion of the biomedical implant material block.3. The method of claim 2 , wherein the step of altering the surface chemistry of the biomedical implant material block comprises subjecting the biomedical implant material block to high energy nitrogen implantation.4. The method of claim 3 , wherein the high energy nitrogen implantation is performed using an ion gun.5. The method of claim 2 , wherein the step of altering the surface chemistry of the biomedical implant material block comprises cleaning the ...

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14-11-2013 дата публикации

Biodegradable implant and fabrication method thereof

Номер: US20130304134A1
Принадлежит: Olympus Corp

The present invention can suitably be used even in a site where hydrogen gas is metabolized slowly, such as the osseous tissue. Provided is a biodegradable implant including a biodegradable magnesium member formed of a magnesium alloy and coating layers that coat the biodegradable magnesium member, thereby reducing the degradation rate thereof in a living organism, wherein a depression to be infiltrated by an osteoblast is formed in a surface of the biodegradable magnesium member.

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14-11-2013 дата публикации

PYROCARBON COATED BONE IMPLANTS

Номер: US20130304226A1
Принадлежит: ASCENSION ORTHOPEDICS, INC.

Methods for forming bone implants for the repair of the ends of bones at orthopedic joints, which implants have a Young's modulus close to that of human cortical bone. Substrates of dense isotropic graphite are coated overall with hard, microporous, isotropic pyrocarbon of specific character such that it can be polished to serve as an articular surface and can also securely receive an anchoring first metal layer through PVD. The first layer has a character such that, by thermal spraying a second biocompatible metal layer thereupon, fusion occurs and thereby anchors an outermost layer that is formed with a network of randomly interconnected pores and a surface character of peaks and valleys designed to promote enhanced appositional growth of cortical bone at the interface therewith. 1. A method of making a bone implant , which method comprises the steps of:creating a substrate of structurally strong isotropic graphite of the shape desired for a bone implant,{'sup': '3', 'sub': 'a', 'claim-text': using physical vapor deposition (PVD) to coat a first metal layer at least about 2 microns and not greater than about 10 microns thick atop a designated portion of said isotropic pyrocarbon layer while leaving a portion of said pyrocarbon layer uncoated, said coating being applied by PVD from a vapor atmosphere so that such first metal layer penetrates into said microporous pyrocarbon to create a secure bond and presents an exterior surface smoother than said underlying pyrocarbon surface, and', 'thermal-spraying a second layer of a biocompatible metal onto at least a designated portion of said first metal layer using a device that melts fine metal particles to produce minute molten globules at least having liquefied outer surfaces to thereby provide an outermost, textured, second metal layer having an average thickness of at least about 25 microns and a texture that enhances attachment of said outermost metal surface to cortical bone, said metal of said first layer and said ...

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12-12-2013 дата публикации

NON-RESORBABLE POLYMER COMPOSITE IMPLANT MATERIALS

Номер: US20130330394A1
Принадлежит:

Composites, constructs and implants comprising a non-resorbable polymer, such as polyetheretherketone (PEEK), having structure of interconnected struts, which may be coralline. Composites may comprise a first phase comprising a ceramic; and a second phase comprising a non-resorbable polymer; wherein each of the first and second phases have an interconnected strut structure and are substantially continuous through the composite. Implants may also comprise a non-porous component containing the non-resorbable polymer that is contiguous with a surface of the core, a surface of the porous layer (if present), or both. Methods are also provided comprising infusing a porous ceramic body, having a plurality of interconnected channels, with a non-resorbable polymer. 1. An orthopedic composite , the composite comprising:a) a first phase comprising a ceramic; andb) a second phase comprising a non-resorbable polymer; i) have an interconnected strut structure; and', 'ii) are substantially continuous through the composite., 'c) wherein each of the first and second phases'}2. The orthopedic composite according to claim 1 , wherein the polymer comprises PEEK.3. The orthopedic composite according to claim 2 , wherein the PEEK is carbon reinforced.4. The orthopedic composite according to claim 1 , wherein the ceramic is selected from the group consisting of calcium phosphate claim 1 , calcium carbonate claim 1 , and mixtures thereof.5. The orthopedic composite according to claim 1 , wherein the first phase claim 1 , the second phase claim 1 , or both claim 1 , has a coralline structure.6. The orthopedic composite according to claim 5 , wherein the first phase has a coralline structure and comprises calcium carbonate coated with calcium phosphate.7. The orthopedic composite according to claim 1 , wherein the non-resorbable polymer is infused into the coralline structure of the first phase so that the second phase has a lost-coralline structure.8. The orthopedic composite according to ...

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19-12-2013 дата публикации

NOGGIN INHIBITORY COMPOSITIONS FOR OSSIFICATION AND METHODS RELATED THERETO

Номер: US20130337082A1
Принадлежит: EMORY UNIVERSITY

This disclosure relates to compounds and compositions for forming bone and methods related thereto. In certain embodiments, the disclosure relates to methods of forming bone comprising implanting a bone graft composition comprising a growth factor such as BMP in a subject at a site of desired bone growth or enhancement in combination with a Noggin blocker. 1. A bone graft composition comprising a N-(pyridin-2-yl)benzo[b]thiophene-2-carboxamide derivative , (3-phenyl)-2-(pyridin-2-yl)acrylonitrile derivative or salt thereof.2. The bone graft composition of claim 1 , wherein the N-(pyridin-2-yl)benzo[b]thiophene-2-carboxamide derivative claim 1 , (3-phenyl)-2-(pyridin-2-yl)acrylonitrile derivative or salt thereof is covalently linked to a graft matrix3. The graft of further comprising a growth factor.4. The graft of claim 3 , wherein the growth factor is a bone morphogenetic protein.5. The graft of claim 4 , wherein the bone morphogenetic protein is BMP-2 claim 4 , BMP-7 claim 4 , BMP-6 claim 4 , or BMP-9.6. The graft composition of further comprising calcium phosphates.7. The graft composition of claim 6 , wherein said calcium phosphates are hydroxyapatite and tricalcium phosphate.8. The graft composition of further comprising a collagen or hydrogel matrix.9. A kit comprising a N-(pyridin-2-yl)benzo[b]thiophene-2-carboxamide derivative claim 1 , (3-phenyl)-2-(pyridin-2-yl)acrylonitrile derivative or salt thereof and a bone graft composition.10. The kit of further comprising a bone morphogenetic protein.11. A method of forming bone comprising implanting a bone graft composition comprising a Noggin blocker optionally comprising a growth factor in a subject at a site of desired bone growth.12. The method of wherein the Noggin blocker is a N-(pyridin-2-yl)benzo[b]thiophene-2-carboxamide derivative claims 11 , (3-phenyl)-2-(pyridin-2-yl)acrylonitrile derivative or salt thereof.13. The method of claim 12 , wherein the N-(pyridin-2-yl)benzo[b]thiophene-2-carboxamide ...

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02-01-2014 дата публикации

Nanofiber scaffolds and methods for repairing skin damage

Номер: US20140004159A1
Автор: Bing Ma, Jingwei Xie
Принадлежит: Marshall University Research Corp

A composition is provided that includes a plurality of layered nanofiber scaffolds. A first nanofiber scaffold can include microwells configured to be seeded with one or more relevant cells, a skin tissue, or combinations thereof. Furthermore, the first nanofiber scaffold can comprise uniaxially aligned nanofibers between the microwells and random nanofibers on the microwells. The composite can also include a second nanofiber scaffold that comprises radially-aligned nanofibers. Further provided are methods for making such a composition as well as methods for treating damaged skin that include applying an effective amount of the composition to a site of damaged skin on a subject.

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09-01-2014 дата публикации

MATERIALS WITH MODIFIED SURFACES AND METHODS OF MANUFACTURING

Номер: US20140010856A1
Принадлежит: WASHINGTON STATE UNIVERSITY

Various embodiments of surface-modified devices, components, and associated methods of manufacturing are described herein. In one embodiment, an implantable device suitable for being implanted in a patient includes an implantable material having a utile shape and a surface and a modification material deposited on at least a portion of the surface of the implantable material. The modification material has a release rate in an implantation environment in the patient. The modification material at the release rate is effective as bactericidal without being cytotoxic to the patient. 1. A method for preparing an implantable device , comprising:depositing a modification material onto at least a portion of a surface of an implantable device;post treating the implantable device with the deposited modification material, wherein post treating the implantable device includes annealing the implantable device at an annealing temperature for an annealing duration; andcontrolling at least one process condition during post treating the implantable device with the deposited modification material based on a target release rate of the deposited modification material into human tissue in an implantation environment, wherein controlling the at least one process condition includes controlling at least one of the annealing temperature or the annealing duration.2. The method of wherein the modification material includes at least one of silver claim 1 , gold claim 1 , zinc oxide claim 1 , and copper.3. The method of wherein:depositing the modification material includes depositing the modification material onto at least a portion of the surface of the implantable device via electrolytic deposition; andcontrolling the at least one process condition further includes adjusting at least one of a concentration of the modification material and/or ions thereof in an electrolyte solution, an electrical deposition potential, a deposition temperature, and a deposition period.4. The method of wherein: ...

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30-01-2014 дата публикации

HYDROGEN OUT GAS OF POROUS METAL SCAFFOLD

Номер: US20140027027A1
Принадлежит:

Systems and methods for hydrogen out gas of a porous metal scaffold are disclosed. A method can comprise heating a porous metal scaffold for a period of time sufficient to remove at least a portion of a hydrogen concentration from the scaffold, subjecting the porous metal scaffold to a vacuum while heating it, flowing an inert gas through or around the porous metal scaffold while heating it, and enhancing a mechanical property of the porous metal scaffold. Heating of the porous metal scaffold can include maintaining a temperature of the scaffold between 1035° C. and 1065° C., inclusive. A system can comprise a reaction chamber, a heater, a gas feed, and a vacuum apparatus. The heater can be configured to heat the reaction chamber and the porous metal scaffold, while the gas feed and the vacuum apparatus respectively flow inert gas and subject the porous metal scaffold to a vacuum. 1. A method comprising:heating a porous metal scaffold, including maintaining a temperature of the porous metal scaffold between 1035° C. and 1065° C., inclusive, for a period of time sufficient to remove at least a portion of a hydrogen concentration from the porous metal scaffold;subjecting the porous metal scaffold to a vacuum while heating the porous metal scaffold;flowing an inert gas through or around the porous metal scaffold while heating the porous metal scaffold; andincreasing a mechanical property of the porous metal scaffold.2. The method of claim 1 , wherein flowing the inert gas includes flowing the inert gas through or around the porous metal scaffold when a temperature of the porous metal scaffold is greater than or equal to a temperature of 250° C.3. The method of claim 1 , wherein subjecting the porous metal scaffold to the vacuum includes subjecting the porous metal scaffold to a pressure between 100 pascal (0.75 torr) and 330 pascal (2.5 torr) claim 1 , inclusive.4. The method of claim 3 , wherein subjecting the porous metal scaffold to the vacuum includes subjecting ...

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06-02-2014 дата публикации

Delivery Scaffolds and Related Methods of Use

Номер: US20140037749A1
Принадлежит: Northwestern University

The present invention relates to delivery systems. In particular, the present invention provides microporous scaffolds having thereon agents (e.g., extracellular matrix proteins, exendin-4) and biological material (e.g., pancreatic islet cells). In some embodiments, the scaffolds are used for transplanting biological material into a subject. In some embodiments, the scaffolds are used in the treatment of diseases (e.g., type 1 diabetes), and related methods (e.g., diagnostic methods, research methods, drug screening). 1. A scaffold composition for time-release delivery of biological or chemical agents to a subject , comprising: a) a substantially non-porous inner layer having a biological or chemical agent associated therewith; and b) porous outer layers having sufficient porosity to permit cellular ingrowth therein.2. The composition of claim 1 , wherein said substantially non-porous inner layer comprises said biological or chemical agent in encapsulated particles.3. The composition of claim 2 , wherein said encapsulated particles are microspheres.4. The composition of claim 3 , wherein said microspheres are poly(lactide-co-glycolide) microspheres.5. The composition of claim 1 , wherein said biological or chemical agent is a protein.6. The composition of claim 1 , wherein said biological or chemical agent is a cell.7. The composition of claim 1 , wherein said biological or chemical agents comprise exendin-4 and extracellular matrix proteins.8. The composition of claim 7 , further comprising pancreatic islet cells.9. The composition of claim 1 , wherein said inner layer is non-porous.10. The composition of claim 1 , wherein said inner layer is substantially free of salt.11. The composition of claim 1 , wherein said biological or chemical agent is nucleic acid.12. The composition of claim 1 , wherein said inner layer is composed of two or more different polymers.13. The composition of claim 1 , wherein said inner layer comprises two or more different biological or ...

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06-02-2014 дата публикации

Silicic acid condensates having a low cross-linkage rate

Номер: US20140037958A1
Автор: Thomas Gerber
Принадлежит: Individual

A material or biomaterial comprising silicic acid condensates with a low degree of crosslinking and methods of producing the same are subject matter of the present invention. A method of producing silicic acid structures having a low degree of crosslinking is disclosed, in which a sol is prepared, with further condensation being prevented if certain cross-linkages of the silicic acid are achieved, and wherein, preferably, structures with a size of 0.5-1000 nm are produced, e.g., polyhedral structures or aggregates of the same. Further condensation can be prevented by a chemical reaction of OH groups of the silicic acid condensates, e.g., by esterification or silylation. In one embodiment, the material primarily includes silicon dioxide (SiO 2 ), in particular silicon dioxide that, because of its modification, e.g., by esterification, is nanostructured and has a low degree of crosslinking. The material may be used for therapeutic purposes in the field of medicine or for cosmetic purposes, and, herein, it may enter into direct contact with biological tissues in the body. In this, said material enters into chemical, physical and biological interactions with the corresponding biological systems. In this context, it can be degraded and can supply the silicic acid needed in the metabolism. It may also have a supportive or shielding effect. It may be present in the form of granules, microparticles, fibers and as woven or fleece fabrics produced from those, or as a layer on implants or wound dressings. This material may be used as a medical device or as a nutritional supplement.

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13-02-2014 дата публикации

DIFFUSION-HARDENED MEDICAL IMPLANT

Номер: US20140046453A1
Принадлежит: Smith & Nephew, Inc.

The present invention relates to a new composition and medical implant made therefrom, the composition comprising a thick diffusion hardened zone, and preferably further comprising a ceramic layer. The present invention relates to orthopedic implants comprising the new composition, methods of making the new composition, and methods of making orthopedic implants comprising the new composition. 1. A medical implant comprising:a substrate comprising a biocompatible alloy;a diffusion hardened zone in contact with said substrate, said diffusion hardened zone comprising a diffusion hardening species;a ceramic layer in contact with said diffusion hardened zone, anda metallic hardened layer comprising a surface of said medical implant.2. The medical implant of wherein said diffusion hardening species comprises oxygen and said biocompatible alloy comprises zirconium claim 1 , said medical implant further comprising a ratio of atomic concentration of oxygen to atomic concentration of zirconium that increases in the direction of the substrate.3. The medical implant of wherein a portion of said increase in the ratio of atomic concentration of oxygen to atomic concentration of zirconium occurs in the metallic hardened layer.4. The medical implant of wherein said ratio of atomic concentration of oxygen to atomic concentration of zirconium ranges between 0.3 and 1.2.5. The medical implant of having an X-ray diffraction pattern where a reflection of tetragonal phase is negligible.6. The medical implant of wherein said substrate comprises grain size of less than 10 microns.7. A medical implant comprising:a first implant portion, said first implant portion having a first bearing surface; anda second implant portion, said second implant portion having a second bearing surface;wherein said first bearing surface and said second bearing surface are capable of engaging one another; a substantially defect-free ceramic layer in contact with a diffusion hardened zone, wherein said diffusion ...

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27-02-2014 дата публикации

HARD TISSUE REGENERATION MATERIAL AND METHOD FOR MANUFACTURING THE SAME

Номер: US20140056948A1
Принадлежит: NATIONAL CHENG KUNG UNIVERSITY

A hard tissue regeneration material and a method for manufacturing the same are disclosed. The hard tissue regeneration material of the present invention comprises: ZnO particles selected from the group consisting of crystallized ZnO particles, crystallized ZnO nanorods, nano-ZnO hollow fibers, and a combination thereof; and at least one selected from the group consisting of polycarboxylate cement, glass ionomer cements, and collagen. 1. A method for manufacturing a hard tissue regeneration material , comprising the following steps:(A) providing a curing material and ZnO particles wherein the curing material is at least one selected from the group consisting of polycarboxylate cement, glass ionomer cement, and collagen, the ZnO particles are at least one selected from the group consisting of crystallized ZnO nanoparticles, crystallized ZnO nanorods, and nano-ZnO hollow fibers, diameters of the crystallized ZnO nanoparticles are 25 nm-200 nm, cross-sectional diameters of the crystallized ZnO nanorods are 50 nm-1000 nm, the nano-ZnO hollow fibers have tube-like structure, and cross-sectional diameters of the nano-ZnO hollow fibers is 500 nm-3 μm; and(B) mixing the curing material and the ZnO particles to form a hard tissue regeneration material.2. The method as claimed in claim 1 , wherein each nano-ZnO hollow fibers is composed of plural ZnO nanoparticles.3. The method as claimed in claim 2 , wherein diameters of the ZnO nanoparticles are 20 nm-200 nm.4. The method as claimed in claim 1 , wherein the crystallized ZnO nanoparticles are single-crystallized ZnO nanoparticles claim 1 , poly-crystallized ZnO nanoparticles claim 1 , or a combination thereof.5. The method as claimed in claim 1 , wherein the polycarboxylate cement is HY-Bond polycarboxylate cement.6. The method as claimed in claim 1 , wherein a content of the ZnO particles is 0.01-40 wt % based on a total weight of the hard tissue regeneration material.7. A hard tissue regeneration material claim 1 , ...

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06-03-2014 дата публикации

COMPOSITION COMPRISING PORTLAND CEMENT FOR USE IN VERTEBROPLASTY

Номер: US20140060390A1
Принадлежит: SPINEART SA

A vertebroplastic cementitious composition includes a solid phase including Portland cement and a biocompatible additive which is a plasticizer and a hardening accelerant, wherein the amount of additive is between about 1% and about 15% by weight relative to the Portland cement; and an aqueous liquid phase, wherein the ratio of the solid phase to the liquid phase is between about 3 g/ml and about 6 g/ml. Methods of forming such compositions, treatment methods using such compositions and cementitious implants including such compositions are also described. 1. A vertebroplastic cementitious composition , the composition comprising:a solid phase comprising Portland cement and a biocompatible additive which is a plasticiser and a hardening accelerant, wherein the amount of additive is between about 1% and about 15% by weight relative to the Portland cement; andan aqueous liquid phase,wherein the ratio of the solid phase to the liquid phase is between about 3 g/ml and about 6 g/ml.2. The composition of claim 1 , wherein the solid phase comprises at least about 70% by weight Portland cement.3. The composition of claim 1 , wherein the biocompatible additive is selected from one or more of the following: calcium chloride claim 1 , calcium nitrate claim 1 , sodium aluminate claim 1 , sodium hexaphosphate claim 1 , calcium acetate claim 1 , citric acid claim 1 , sodium citrate claim 1 , calcium citrate and potassium citrate.4. The composition of claim 1 , wherein the biocompatible additive is sodium citrate or potassium citrate.5. The composition of claim 1 , wherein the biocompatible additive is the combination of calcium chloride and calcium nitrate.6. The composition of claim 1 , wherein the amount of additive relative to the Portland cement is between about 4% and about 11% by weight.7. The composition of claim 1 , wherein the amount of additive relative to the Portland cement is between about 1.5% and about 2.5% by weight.8. The composition of claim 1 , wherein the ratio ...

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20-03-2014 дата публикации

Molecules and methods for inhibition and detection of proteins

Номер: US20140082769A1
Принадлежит: Individual

The present application belongs to the field of functional peptides and more particularly to the field of controlled protein aggregation. The invention discloses molecules of a peptide structure as defined in the claims and methods of using such molecules for therapeutic applications and for diagnostic uses, as well as in other applications such as in the agbio field and in industrial biotechnology. The molecules can be used for curing and/or stabilizing infections such as bacterial, fungal and viral diseases, but are also useful in non-infectious human and veterinary diseases. The molecules can also be used for the detection of protein biomarkers and for the prognosis and diagnosis of a variety of diseases.

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10-04-2014 дата публикации

COMPOSITES CONTAINING POLYPEPTIDES ATTACHED TO POLYSACCHARIDES AND MOLECULES

Номер: US20140099444A1
Принадлежит: THE PENN STATE RESEARCH FOUNDATION

This document provides methods and materials related to composites or coatings containing polypeptides attached to polysaccharides and/or molecules. For example, methods and materials related to composites or coatings containing polypeptides (e.g., casein polypeptides) attached to polysaccharides (e.g., cellulose) and/or molecules (e.g., calcium containing molecules such as calcium phosphate and calcium carbonate and/or polyesters such as polylactic acid and polyhydroxybutyrate) are provided. A coating provided herein can include both cationic and ionic polymers, polypeptides, or polysaccharides. 120-. (canceled)21. A method for coating a product , wherein said method comprises:(a) combining casein, a calcium containing mineral, and a biopolymer to form a mixture, and(b) applying said mixture to a product to form a coated product.22. The method of claim 21 , wherein said calcium containing mineral is calcium carbonate.23. The method of claim 21 , wherein said calcium containing mineral is calcium phosphate.24. The method of claim 21 , wherein said biopolymer comprises polylactic acid.25. The method of claim 21 , wherein said biopolymer comprises poly(lactic-co-glycolic) acid.26. The method of claim 21 , wherein said step (a) comprises mixing said casein and said calcium containing mineral in water.27. The method of claim 21 , wherein said step (a) comprises mixing said casein and said calcium containing mineral in water having a pH of 7-11.28. The method of claim 21 , wherein said step (a) comprises mixing said casein and said calcium containing mineral in solution claim 21 , wherein the solid content of said solution is from 0.5 percent to 5 percent.29. The method of claim 21 , wherein said step (a) comprises (i) mixing said casein and said calcium containing mineral in solution and (ii) adding said biopolymer to said solution.30. The method of claim 21 , wherein said mixture is applied to said product using a gravure coating process.31. The method of claim 21 , ...

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07-01-2021 дата публикации

IMPLANTABLE MESH

Номер: US20210000603A1
Автор: Schlachter Kelly W.
Принадлежит:

An implantable mesh including demineralized bone fibers mechanically entangled into a biodegradable or permanent implantable mesh is provided. A method of preparing the implantable mesh is also provided. The method of preparing the implantable mesh includes mechanically entangling demineralized bone fibers with non-bone fibers to form the implantable mesh. The mechanical entanglement of the bone fibers into the implantable mesh is achieved by applying needle punching with barbed needles, spun lacing, entanglement with water jets or air jets or ultrasonic entanglement with ultrasonic waves. A method of implanting an implantable mesh at a target bone tissue site is also provided. 111-. (canceled)12. A method of preparing an implantable mesh , the method comprising mechanically entangling demineralized bone fibers with non-bone fibers to form the implantable mesh.13. A method of claim 12 , wherein the mechanical entangling comprises applying needle punching with barbed needles claim 12 , spun lacing claim 12 , entanglement with water jets or air jets or ultrasonic entanglement with ultrasonic waves.14. A method of claim 13 , wherein the mechanical entangling further comprises applying to the implantable mesh moisture claim 13 , heat and/or pressure provided by pressure rollers.15. A method of claim 12 , wherein (i) the mesh is porous having pores from about 100 to about 200 μm; (ii) the mesh does not contain a carrier; or (iii) the mesh is woven claim 12 , non-woven claim 12 , knitted claim 12 , wrapped claim 12 , plied claim 12 , braided or a mixture thereof.16. A method of claim 12 , wherein the demineralized bone fibers have (i) an aspect ratio of from about 50:1 to about 1000:1; (ii) a diameter from about 100 μm to about 2 mm; or (ii) a length from about 0.5 cm to about 10 cm.17. A method of implanting an implantable mesh at a target bone tissue site claim 12 , the method comprising contacting the bone tissue site with the implantable mesh claim 12 , the ...

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02-01-2020 дата публикации

SELF-SUPPORTING LAMINATED FILMS, STRUCTURAL MATERIALS AND MEDICAL DEVICES MANUFACTURED THEREFROM AND METHODS OF MAKING SAME

Номер: US20200000571A1
Автор: Marton Denes
Принадлежит:

Metal foils, wires, and seamless tubes with increased mechanical strength are provided. As opposed to wrought materials that are made of a single metal or alloy, these materials are made of two or more layers forming a laminate structure. Laminate structures are known to increase mechanical strength of sheet materials such as wood and paper products and are used in the area of thin films to increase film hardness, as well as toughness. Laminate metal foils have not been used or developed because the standard metal forming technologies, such as rolling and extrusion, for example, do not lend themselves to the production of laminate structures. 1. An implantable medical material comprising a self-supporting monolithic structure composed of a plurality of layers of at least one biocompatible metal material , at least one of the plurality of layers consisting of a radiopaque biocompatible material.2. The implantable medical material according to claim 1 , wherein the biocompatible metal material is selected from the group consisting of titanium claim 1 , vanadium claim 1 , aluminum claim 1 , nickel claim 1 , tantalum claim 1 , zirconium claim 1 , chromium claim 1 , silver claim 1 , gold claim 1 , silicon claim 1 , magnesium claim 1 , niobium claim 1 , scandium claim 1 , platinum claim 1 , cobalt claim 1 , palladium claim 1 , manganese claim 1 , molybdenum and alloys thereof claim 1 , zirconium-titanium-tantalum alloys claim 1 , nitinol claim 1 , and stainless steel.3. The implantable medical material according to claim 1 , wherein the plurality of layers further comprise an interface region between adjacent pairs of plurality of layers claim 1 , wherein the interface region is characterized by a local concentration of grain boundaries that is higher than a local concentration of grain boundaries within the biocompatible metal materials of the plurality of layers.4. The implantable medical material according to claim 3 , wherein the interface region further comprises a ...

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03-01-2019 дата публикации

Scaffold with cortical wall

Номер: US20190000603A1
Принадлежит: CORTICALIS AS

The present disclosure is directed to a titanium dioxide scaffold provided with a nanoporous outer layer which can function as a cortical wall, inhibiting growth of soft tissue into the scaffold and increasing its mechanical strength. The disclosure is also directed to a process for producing such a nanoporous outer layer and the application of the titanium dioxide scaffold with the nanoporous outer layer as a medical implant.

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03-01-2019 дата публикации

Heart valve sealing devices and delivery devices therefor

Номер: US20190000613A1
Принадлежит: Edwards Lifesciences Corp

An exemplary implantable prosthetic device has a paddle frame, an inner paddle, and an outer paddle. The outer paddle is connected to the inner paddle. The inner and outer paddles are connected to the paddle frame at a connection between the inner paddle and the outer paddle. The paddle frame can be positioned inside the inner paddle, outside the outer paddle, or between the inner and outer paddles.

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07-01-2016 дата публикации

BIODEGRADABLE IMPLANT AND METHOD FOR MANUFACTURING SAME

Номер: US20160000964A1
Принадлежит:

This invention relates to a biodegradable implant including magnesium, wherein the magnesium contains, as impurities, (i) manganese (Mn); and (ii) one selected from the group consisting of iron (Fe), nickel (Ni) and mixtures of iron (Fe) and nickel (Ni), wherein the impurities satisfy the following condition: 0 Подробнее

07-01-2016 дата публикации

MEDICAL DEVICE WITH A BIOCOMPATIBLE COATING

Номер: US20160000967A1
Принадлежит:

An implantable medical device comprising (a) a metallic substrate and (b) a bisphosphonate wherein both phosphorus atoms contained in the bisphosphonate are covalently attached to a same carbon atom. The bisphosphonate continuously coats the external surface of the metallic substrate as monolayer and as outermost layer. At least one phosphonate moiety of the bisphosphonate is covalently and directly bonded to the external surface of the metallic substrate and/or covalently bonded to another molecule of the bisphosphonate in the coating. 2. The vascular endoprosthesis according to claim 1 , wherein Rrepresents —CHand Rrepresents —OH.3. The vascular endoprosthesis according to or claim 1 , wherein the surface phosphorus-atom concentration of the coating of the bisphosphonate is at least 70% P claim 1 , preferably at least 80% P.4. The vascular endoprosthesis according to any one of preceding claims claim 1 , selected from the group consisting of stents claim 1 , stentgraft claim 1 , filter claim 1 , heart valve claim 1 , coronary stents and peripheral stents.6. The composition for use according to claim 5 , wherein Rrepresents —CHand Rrepresents —OH.8. The composition for use according to claim 7 , wherein Rrepresents —CHand Rrepresents —OH.12. The method according to further comprising a step (e) removing bisphosphonate acid compound which is not covalently immobilized on the surface of the metallic substrate from the surface.13. The method according to claim 12 , wherein the bisphosphonic acid is selected from the group consisting of 1-hydroxyethylidene-1 claim 12 ,1-diphosphonic acid (etidronic acid) claim 12 , alendronic acid claim 12 , clodronic acid claim 12 , pamidronic acid claim 12 , tiludronic acid and risedronic acid claim 12 , preferably etidronic acid.14. The method according to any one of to claim 12 , wherein the surface of the metallic substrate to be coated is subjected to a thermal treatment for promoting the formation of a thick external metal oxide ...

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07-01-2021 дата публикации

IODINE-LOADED BONE REPAIR MATERIAL AND METHOD FOR PRODUCING THE SAME

Номер: US20210001004A1
Принадлежит: CHUBU UNIVERSITY EDUCATIONAL FOUNDATION

A highly safe and inexpensive bone repair material that stably exhibits high antibacterial activity for a long time in a living body by supporting a large amount of an iodine ion and is excellent in apatite forming ability and preservability. The material includes a substrate made of titanium or titanium alloy and a titanate film on a surface of the substrate, the film composed of a large number of crystalline masses having a crystal structure and containing a calcium ion and an iodine ion, wherein the mass contains layers having a Ti—O skeleton and the calcium and the iodine ions adsorbed between the layers. 1. A bone repair material , comprising:a substrate made of titanium or titanium alloy; anda titanate film on a surface of the substrate, the titanate film composed of a large number of crystalline masses having a crystal structure, and containing a calcium ion and an iodine ion.2. The bone repair material according to claim 1 , wherein the crystalline mass contains: a plurality of layers having a Ti—O skeleton; and the calcium ion and the iodine ion adsorbed between the layers.3. The bone repair material according to claim 1 , wherein at least a part of the iodine ions are positively charged.4. The bone repair material according to claim 1 , wherein the titanate film has a calcium ion concentration in a range of 0.1 to 10% by mass and an iodine ion concentration in a range of 0.1 to 15% by mass.5. A method for producing a bone repair material claim 1 , comprising the steps of:immersing a substrate made of titanium or titanium alloy in a first alkaline aqueous solution that does not contain a calcium ion or an iodine ion but contains one or more types of cations selected from a sodium ion and a potassium ion;immersing the substrate in a second aqueous solution containing a calcium ion;heating the substrate in the air; andimmersing the substrate in a third aqueous solution containing an iodine ion.6. The method according to claim 5 , wherein the iodine ion is ...

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07-01-2021 дата публикации

METHOD FOR PRODUCING COLLAGEN VITRIGEL, METHOD FOR PRODUCING PURIFIED COLLAGEN VITRIGEL, AND COLLAGEN VITRIGEL AND PURIFIED COLLAGEN VITRIGEL PRODUCED BY SAID METHODS

Номер: US20210001005A1

An object is to produce a collagen vitrigel, which has a high film strength even without performing a crosslinking treatment, and is easily produced and processed industrially and mechanically, and is also easy to handle and is highly safe, from collagen, and a purified product thereof. In order to achieve the object, it is directed to a method for producing a collagen vitrigel characterized by gelling collagen with a gelling agent containing an inorganic carbonate and a compound selected from the group consisting of an inorganic chloride and an inorganic phosphate, subsequently vitrifying the obtained collagen gel, and further subjecting the vitrified collagen gel to a hydration treatment; a method for producing a purified collagen vitrigel characterized by desalting, equilibrating, and further drying the collagen vitrigel; and a collagen vitrigel and a purified collagen vitrigel obtained by these methods. 1. A method for producing a collagen vitrigel , the method comprising:gelling collagen with a gelling agent comprising an inorganic carbonate and a compound selected from the group consisting of an inorganic chloride and an inorganic phosphate, to obtain a collagen gel;vitrifying the collagen gel, to obtain a vitrified collagen gel; andsubjecting the vitrified collagen gel to a hydration treatment, to obtain the collagen vitrigel.2. The method for producing a collagen vitrigel according to claim 1 , wherein the collagen is porcine skin-derived atelocollagen.3. The method for producing a collagen vitrigel according to claim 1 , wherein a pH at 25° C. of a mixture of the collagen and the gelling agent is 6.2 to 9.8.4. The method for producing a collagen vitrigel according to claim 3 , wherein an ionic strength of a compound contained in the mixture of the collagen and the gelling agent is 0.07 to 0.22.5. The method for producing a collagen vitrigel according to claim 1 , wherein the inorganic carbonate is an inorganic carbonate or an inorganic bicarbonate.6. The ...

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02-01-2020 дата публикации

BIOFILM RESISTANT MEDICAL IMPLANT

Номер: US20200000977A1
Принадлежит:

A method of incorporating silver and/or copper into a biomedical implant includes: providing an implant having an outer surface; depositing silver and/or copper onto the outer surface of the implant; diffusing the silver and/or copper into a subsurface zone adjacent the outer surface; and oxidizing or anodizing the implant after the diffusion step to form an oxidized or anodized layer that contains at least some amount of elemental silver, elemental copper or silver or copper ions or compounds. 1. A method of incorporating silver , copper or both silver and copper into a metallic biomedical implant , comprising:providing an implant comprising a biomedical metal or a biomedical alloy having an outer surface;depositing silver, copper or both silver and copper onto the outer surface;diffusing silver, copper or both silver and copper into the biomedical metal or biomedical alloy beneath the outer surface by heating the implant; andoxidizing or anodizing the outer surface after said diffusing to form an oxidized or anodized layer.2. The method of claim 1 , wherein the oxidized or anodized layer contains at least some amount of elemental silver claim 1 , silver oxide or silver compounds.3. The method of claim 1 , further including claim 1 , before said depositing claim 1 , roughening the outer surface.4. The method of claim 3 , wherein the surface claim 3 , after said roughening and before said depositing claim 3 , has a roughness of from about 0.1 micron to about 10 micron Ra.5. The method of wherein said roughening comprises a physical roughening treatment claim 3 , a chemical treatment that includes soaking the substrate in an alkaline solution for a period of time of about 1 hour to about 24 hours claim 3 , or both the physical roughening and the chemical treatment.6. The method of claim 1 , further comprising claim 1 , before said depositing claim 1 , etching the outer surface using a fluoride solution.7. The method of claim 1 , wherein said diffusing is conducted in ...

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05-01-2017 дата публикации

Ultrapure Magnesium Alloy With Adjustable Degradation Rate

Номер: US20170000925A1
Принадлежит:

An alloy and an implant having a three-dimensional structure based on such alloy. The alloy comprises a monophasic MgZn alloy containing from 2.0 wt. % Zn to 6 wt. % Zn, having less than 0.001 wt. % of one or more other elements with the remainder being Mg. In some embodiments, the alloy is substantially free of microgalvanic elements. In some embodiments, the alloy includes a MgZnCa alloy containing nanosized precipitates being less noble than the Mg matrix alloy and having a Zn content ranging from 3.0 wt. % Zn to 6 wt. % Zn and a calcium content ranging from 0.0005 wt. % to 1.0 wt. %, having less than 0.001 wt. % of one or more other elements with the remainder being Mg. In other embodiments, the alloy includes a MgZnCa alloy containing nanosized precipitates being less noble than the Mg matrix alloy, a plurality of nanosized precipitates being more noble than the Mg matrix and having a Zn content ranging from 3.0 wt. % Zn to 6 wt. % Zn, a calcium content ranging from 0.0005 wt. % to 1.0 wt. %, having less than 0.001 wt. % of one or more other elements with the remainder being Mg. 1. A composition comprising:a monophasic MgZn alloy containing from 2.0 wt. % Zn to 6 wt. % Zn;less than 0.001 wt. % of one or more other elements located in a secondary phase;and with the remainder of the alloy being Mg.2. A composition comprising:a MgZnCa alloy containing nanosized precipitates being less noble than a MgZn alloy, having a Zn content ranging from 3.0 wt. % Zn to 6 wt. % Zn and a calcium content ranging from 0.0005 wt. % to 1.0 wt. %, less than 0.001 wt. % of one or more other elements located in a secondary phase and with the remainder of the alloy being Mg.3. A composition comprising a MgZnCa alloy containing nanosized precipitates being less noble than Mg matrix alloy , a plurality of nanosized precipitates being more noble than a MgZn alloy , and having a Zn content ranging from 3.0 wt. % Zn to 6 wt. % Zn and a calcium content ranging from 0.0005 wt. % to 1.0 wt. % ...

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03-01-2019 дата публикации

Light Adjustable Intraocular Lenses Using Upconverting Core-Shell Nanoparticles And Near Infrared (NIR) Light

Номер: US20190001024A1
Принадлежит:

This disclosure relates compositions comprising upconverting core-shell nanocrystals and photoactive compositions and methods using these compositions to modify treat myopia and other ocular conditions. In some cases, the methods use near infrared irradiation to adjust the refractive power of light adjustable intraocular lenses. 1. A light adjustable intraocular lens comprising:(a) a photopolymerizable prepolymer;(b) a UV-Vis photoinitiator;(c) at least one upconverting core-shell nanocrystal; and(d) optionally a UV-Vis blocker;wherein the light adjustable intraocular lens further optionally comprises a polymer matrix in which the photopolymerizable prepolymer material, the UV-Vis photoinitiator, the optional UV-Vis blocker, and the at least one upconverting nanocrystal are distributed.2. The light adjustable intraocular lens of claim 1 , wherein the photopolymerizable prepolymer comprises a polyethylene glycol (PEG) claim 1 , a poly[alkyl or dialkyl]siloxane claim 1 , a poly[meth]acrylate claim 1 , a poly(amino acid) claim 1 , a poly(amino acid)-copolymer claim 1 , a polycarbohydrate claim 1 , a protein claim 1 , or a polysaccharide backbone.3. The light adjustable intraocular lens of claim 1 , wherein the photopolymerizable prepolymer comprises an acrylate claim 1 , methacrylate claim 1 , acrylamide claim 1 , methacrylamide claim 1 , allyloxy claim 1 , cinnamoyl claim 1 , or vinyl group.4. The light adjustable intraocular lens of claim 2 , wherein the polysaccharide comprises poly(hyaluronic acid) claim 2 , dermatansulfate claim 2 , chondroitinsulfate or keratansulfate.5. The light adjustable intraocular lens of claim 2 , wherein the protein is a native or engineered elastin.6. The light adjustable intraocular lens of claim 1 , wherein the photoinitiator is a Type I or a Type II photoinitiator.7. The light adjustable intraocular lens of claim 1 , wherein the photoinitator absorbs light in a range of from 250 nm to 600 nm.8. The light adjustable intraocular lens of ...

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03-01-2019 дата публикации

MAGNESIUM PHOSPHATE HYDROGELS

Номер: US20190002282A1

A hydrogel comprising a colloidal suspension of MMPtwo-dimensional nanocrystals in water, wherein Mis Na and/or Li, Mis Mg or a mixture of Mg with one or more Ni, Zn, Cu, Fe and/or Mn, P is a mixture of dibasic phosphate ions (HPO) and tribasic phosphate ions (PO), X ranges from about 0.43 to about 0.63, Y ranges from about 0.10 to about 0.18, Z ranges from about 0.29 to about 0.48, X, Y, Z being mole fractions, is provided. 1. A hydrogel comprising a colloidal suspension of MMPtwo-dimensional nanocrystals in water , wherein:{'sup': I', '+', '+, 'Mis Na and/or Li,'}{'sup': II', '2+', '2+', '2+', '2+', '2+', '2+', '2+, 'Mis Mg or a mixture of Mg with one or more Ni, Zn, Cu, Fe and/or Mn,'}{'sub': 4', '4, 'sup': 2−', '3−, 'P is a mixture of dibasic phosphate ions (HPO) and tribasic phosphate ions (PO),'}X ranges from about 0.43 to about 0.63,Y ranges from about 0.10 to about 0.18, andZ ranges from about 0.29 to about 0.48,X, Y, Z being mole fractions.2. The hydrogel of claim 1 , wherein X ranges from about 0.50 to about 0.58.3. The hydrogel of claim 1 , wherein Y ranges from about 0.13 to about 0.16.4. The hydrogel of claim 1 , wherein Z ranges from about 0.34 to about 0.37.56-. (canceled)7. The hydrogel of claim 1 , wherein Mis a mixture of Na and Li.8. The hydrogel of claim 1 , wherein Mis Mg.9. The hydrogel of claim 1 , wherein Mis a mixture of Mg and one or more Ni claim 1 , Zn claim 1 , Cu claim 1 , Fe and/or Mn.10. The hydrogel of claim 1 , wherein Mis a mixture of Mg and Fe.1113-. (canceled)14. The hydrogel of claim 1 , wherein Mis Na claim 1 , Mis Mg claim 1 , X is 0.53 claim 1 , Y is 0.13 claim 1 , and Z is 0.34.1518-. (canceled)19. The hydrogel of claim 1 , having a pH between about 9 and about 11.20. The hydrogel of claim 1 , comprising between about 5% and about 15% by weight of MMP claim 1 , based on the total weight of the gel.21. The hydrogel of claim 1 , comprising between about 85% and about 95% of water by weight based on the total weight of the gel. ...

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05-01-2017 дата публикации

COMPOSITES COMPRISING NANOSTRUCTURED DIAMOND AND METAL BORIDE FILMS AND METHODS FOR PRODUCING SAME

Номер: US20170002457A1
Принадлежит:

Composites having a substrate, a diamond film, and a metal boride film disposed between the substrate and the diamond film, together with methods for producing the composites. 1. A composite comprising:a) a substrate;b) a diamond film having a surface roughness of from about 5 nm to about 100 nm; andc) an at least partially continuous metal boride layer disposed between a surface of the substrate and the diamond film.2. The composite of claim 1 , having a hardness of at least about 50 GPa.3. (canceled)4. The composite of claim 1 , wherein the substrate comprises cobalt or an alloy thereof.5. (canceled)6. (canceled)7. The composite of claim 1 , wherein the substrate further comprises one or more of chromium claim 1 , molybdenum claim 1 , tungsten claim 1 , titanium claim 1 , aluminum claim 1 , vanadium claim 1 , nickel claim 1 , iron claim 1 , manganese claim 1 , tungsten carbide claim 1 , carbon claim 1 , or a combination thereof.8. The composite of claim 1 , wherein the substrate comprises a metal carbide alloy.9. The composite of claim 8 , wherein the metal carbide alloy comprises one or more of tungsten carbide claim 8 , titanium carbide claim 8 , or a combination thereof.10. The composite of claim 1 , wherein the diamond film is positioned over at least a portion of the at least partially continuous metal boride layer.11. (canceled)12. The composite of claim 1 , wherein the diamond film is substantially free of a graphitic carbon.13. The composite of claim 1 , wherein the diamond film comprises a nanostructured diamond film.14. (canceled)15. The composite of claim 1 , wherein the diamond film is substantially free of an elemental metal.16. (canceled)17. (canceled)18. The composite of claim 1 , wherein the at least partially continuous metal boride layer comprises cobalt boride.19. (canceled)20. (canceled)21. The composite of claim 1 , wherein the at least partially continuous metal boride layer is conformal to the surface of the substrate.22. The composite of ...

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04-01-2018 дата публикации

BIOACTIVE COMPOSITES WITH FUNCTION OF RADIOPACITY

Номер: US20180002483A1
Принадлежит:

A bioactive composite includes 10% to 40% by weight of calcium sulfate (CaSO), 10% to 20% by weight of tantalum pentoxide (TaO), and 40% to 80% of polyetheretherketone (PEEK). Calcium sulfate is anhydrous calcium made by removing crystallization water of beta calcium sulfate hemihydrate. 1. A bioactive composite comprising: 10% to 40% by weight of calcium sulfate (CaSO) , 10% to 20% by weight of tantalum pentoxide (TaO) , and 40% to 80% of polyetheretherketone (PEEK);wherein calcium sulfate is anhydrous calcium made by removing crystallization water of beta calcium sulfate hemihydrate.2. The bioactive composite of claim 1 , further comprising up to 10% by weight of barium sulfate (BaSO).3. The bioactive composite of claim 1 , further comprising up to 10% by weight of ferrous ferric oxide (FeO). The present invention relates to a bioactive composite, and more particularly to a bioactive composite with function of radiopacity for surgery.As high development of theory and technique of manufacturing and biomaterial usage in recent years, titanium and titanium alloys are replaced by high-performance biopolymers in surgical implants. For a variety of biopolymer materials today, polyetheretherketone (PEEK) has an elastic modulus relatively close to that of human bones, so that when it is implanted, it could reduce bone resorption and bone atrophy caused by stress shielding in biomechanics. Furthermore, PEEK has the functions of chemical resistance, fatigue resistance, stable physicochemical property to take sterilization operation by autoclaving, ethylene oxide, or gamma radiation, so that PEEK is a good long term implant (Biomaterials 2007, 28:4845-4869). However, PEEK has a weak link with human bones due to its low bioactivity.According to biomimetics of bone bioengineering, pore size and porosity of the implants affect cell adhesion and bone ingrowth. The interconnected pores benefit ingrowth of blood vessels and metabolism. However, porous scaffolds usually reveal the ...

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07-01-2021 дата публикации

PEPTIDE THERAPIES FOR REDUCTION OF MACULAR THICKENING

Номер: US20210002328A1
Принадлежит:

Compounds comprising R-G-Cysteic Acid (i.e., R-G-NH—CH(CH—SOH)COOH or Arg-Gly-NH—CH(CH—SOH)COOH) and derivatives thereof, including pharmaceutically acceptable salts, hydrates, stereoisomers, multimers, cyclic forms, linear forms, drug-conjugates, pro-drugs and their derivatives. Also disclosed are methods for making and using such compounds including methods for inhibiting integrins including but not necessarily limited to αβ-Integrin, αβ-Integrin and αβ-Integrin, inhibiting cellular adhesion to RGD binding sites, preventing or treating viral or other microbial infections, inhibiting angiogenesis in tumors, retinal tissue or other tissues or delivering other diagnostic or therapeutic agents to RGD binding sites in human or animal subjects. 131.-. (canceled)32. A method for treating pathological thickening of the macula of an eye in a subject , said method comprising administering to the subject a pharmaceutical composition comprising either:i) a peptide which comprises Glycinyl-Arginyl-Glycinyl-Cysteic-Threonyl-Proline-COOH (SEQ ID NO. 2); or {'br': None, 'X1-R-G-Cysteic Acid-X'}, 'ii) a peptide having the general formula (SEQ ID NO 9)where X and X1 are selected from cyclic or linear: -Phe-Val-Ala, -Phe-Leu-Ala, -Phe-Val-Gly, -Phe-Leu-Gly, -Phe-Pro-Gly, -Phe-Pro-Ala, -Phe-Val, or any salt of any combination of the D-isomer or L-isomer of: Arg, Gly, Cysteic, Phe, Val, Ala, Leu, Pro, Thr and salts thereof any any combinations of D-isomers and L-isomers thereof.33. A method according to wherein the peptide inhibits at least α5β1-Integrin claim 32 , αvβ3-Integrin and αvβ5-Integrin.34. A method according to herein the peptide inhibits an Integrin associated with a cell adhesion motif.35. A method according to wherein the peptide inhibits an integrin associated with fibronectin claim 34 , vitronectin claim 34 , laminin claim 34 , fibrinogen claim 34 , thrombospondin claim 34 , and von Willebrand factor36. A method according to wherein the composition is administered by ...

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13-01-2022 дата публикации

SYSTEM AND METHOD OF ATTACHING SOFT TISSUE TO AN IMPLANT

Номер: US20220008205A1
Принадлежит:

One embodiment of the present invention is directed to compositions and methods for enhancing attachment of soft tissues to a metal prosthetic device. In one embodiment a construct is provided comprising a metal implant having a porous metal region, wherein said porous region exhibits a nano-textured surface. 120-. (canceled)21. A method of generating soft tissue and/or fibrocartilage tissue and/or bone on a metal implant to enhance the attachment of the metal implant to a patient's tissues , said method comprising:implanting said implant, comprising a metal surface having nanosurface roughness produced from anodization, one or more adhered nanoparticles, or etching of the metal surface, the implant further comprising an antibiotic compound or an antimicrobial compound, wherein said implant is in contact with said patient's tissues to induce the generation of soft tissue and/or fibrocartilage tissue and/or bone on said metal implant.22. The method of claim 21 , wherein the anodization of the metal surface is performed by pretreating the metal surface of said implant with an acid; and anodizing said pretreated metal surface at low voltage for at least 1 minute.23. The method of claim 22 , wherein the pretreated metal surface is anodized at low voltage for 1 to 5 minutes.24. The method of claim 23 , wherein the metal surface displaying the nanosurface roughness comprises titanium or a titanium alloy claim 23 , and wherein said pretreating step comprises immersing the metallic implant and a cathode in an acidic electrolyte solution comprising hydrofluoric acid; and said anodizing step comprises applying an electrical potential between the metallic implant and the cathode.25. The method of claim 24 , wherein the electrical potential is about 20 volts that is maintained for 1 claim 24 , 3 or 5 minutes.26. The method of claim 24 , wherein the acidic electrolyte solution comprises 1% hydrofluoric acid.27. The method of claim 24 , wherein the acidic electrolyte solution ...

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13-01-2022 дата публикации

Implant for non-luminal area

Номер: US20220008625A1
Принадлежит: Japan Medical Device Technology Co Ltd

A bioabsorbable implant for non-luminal region comprising: a core structure including a magnesium alloy having a predetermined shape; a first corrosion-resistant layer containing a magnesium fluoride layer as a main component formed on the core structure via fluorination of a surface of the magnesium alloy; and a second corrosion-resistant layer containing a parylene formed on the magnesium fluoride layer.

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20-01-2022 дата публикации

COMPOSITION AND METHOD FOR CREATING NANOSCALE SURFACE GEOMETRY ON AN IMPLANTABLE DEVICE

Номер: US20220017822A1
Принадлежит: Tech Met, Inc.

Compositions and methods for etching a surface of an implantable device are disclosed. The compositions generally include one or more alkali components, such as a metal hydroxide and optionally an amine, one or more chelating agents, and certain dissolved metals, such as component metals of the metal or alloy to be etched and optionally iron. For example, when etching a titanium device, the metals may include titanium (Ti). Alternatively, the composition may be an electrolyte composition useful for electrochemical etching of the implantable device. These compositions and methods may generate nanoscale geometry on the surface of the implantable device to provide implants with accelerate osseointegration and healing after surgery. 1. An alkaline composition for etching a nanoscale surface geometry on a metal surface of a body implantable device , the composition comprising:a metal hydroxide; one or more chelating agents; and optionally component metals of the metal surface,wherein the body implantable device is a bone-contacting device and the nanoscale surface geometry enhances osseointegration when the bone-contacting device is implanted adjacent bone, orwherein the body implantable device is a tissue-contacting device and the nanoscale surface geometry enhances endothelial attachment and proliferation when the tissue-contacting device is implanted adjacent tissue.2. The composition of claim 1 , wherein the metal hydroxide is included in the composition at 5 wt. % to 75 wt. %.3. The composition of claim 1 , wherein the one or more chelating agents comprise a gluconate included in the composition at 0.1 wt. % to 40 wt. %.4. The composition of claim 3 , wherein the metal surface comprises a titanium surface claim 3 , and the component metal of the metal surface comprises dissolved titanium at 0.1 ppm to 7 claim 3 ,000 ppm.5. The composition of claim 4 , comprising:5 to 75 wt. % of the metal hydroxide; and100 to 7,000 ppm of the dissolved titanium.6. The composition of ...

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12-01-2017 дата публикации

BONE GRAFTS AND METHODS OF MAKING AND USING BONE GRAFTS

Номер: US20170007740A1
Принадлежит:

Provided herein are bone grafts and methods of making and using the same, as well as products and kits that include such bone grafts. In particular, bone grafts are provided that include collagen Type I and one or more different types of mineral compositions having different dissolution properties and/or sizes, to enhance bone regeneration throughout the bone healing phase. 1. A bone graft comprising:20% to 95% by weight of collagen type I with respect to a total weight of the bone graft, and20% to 95% by weight of one or more minerals with respect to the total weight of the bone graft, wherein the one or more minerals have two or more dissolution rates, thereby allowing the bone graft to enhance bone healing in both early and late phases of bone healing.2. The bone graft of claim 1 , further comprising 0.2 to 20% by weight of hyaluronic acid with respect to the total weight of the bone graft.3. The bone graft of claim 1 , further comprising 0.1 to 20% by weight of acid or base with respect to the total weight of the bone graft.4. The bone graft of claim 1 , further comprising 20% to 95% by weight DBM with respect to the total weight of the bone graft.5. The bone graft of claim 1 , wherein the collagen type I is from a bovine or porcine source and is obtained from either skin (dermal) or tendon.6. The bone graft of claim 1 , wherein the one or more minerals comprise beta-tricalcium phosphate.7. The bone graft of claim 1 , wherein the one or more minerals comprise carbonate apatite.8. The bone graft of claim 1 , wherein the one or more minerals comprise calcium carbonate.9. The bone graft of claim 1 , wherein the one or more minerals have a size ranging from about 75 nm to 500 μm.10. The bone graft of claim 1 , wherein the one or more minerals include a first mineral having a first dissolution profile and a second mineral having a second dissolution profile claim 1 , wherein the first dissolution profile is different from the second dissolution profile in order to ...

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11-01-2018 дата публикации

Porous metal device for regenerating soft tissue-to-bone interface

Номер: US20180008399A1
Принадлежит: Zimmer Inc

The present disclosure relates, in some aspects, to orthopaedic implants for securing soft tissue to bone and methods for using the same. One particular implant comprises a first exposed porous surface region, having pores for promoting bone ingrowth, and a second exposed porous surface, having pores for promoting soft tissue ingrowth. At least some of the pores of the first exposed porous surface region may be seeded with osteocytic factors and at least some of the pores of the second exposed porous surface region may be seeded with fibrocytic factors. Such orthopaedic implants can advantageously facilitate regeneration of the soft tissue to bone interface.

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11-01-2018 дата публикации

SHAPEABLE POROUS METAL IMPLANT

Номер: US20180008415A1
Принадлежит:

Shapeable porous metal implants and methods for use in various procedures are disclosed. The implants can comprise a shell according to some examples. According to one example, the method can include providing a sheet of highly porous metal material having a porosity of between 55% and 90%, and wrapping the sheet of highly porous metal material around at least a first bone of the patient. Further examples can form the sheet intra-operatively to a desired shape. In an example, the porous metal sheet can be formed of tantalum or tantalum alloys. 1. A method of supporting bone in a patient , comprising:providing a sheet of highly porous metal material having a porosity of between 55% and 90% for encouraging bone ingrowth into said sheet; andwrapping the sheet around at least a first bone of the patient.2. The method of claim 1 , wherein the wrapping includes shaping the sheet intra-operatively to a desired shape to match an anatomy of the patient.3. The method of claim 1 , wherein the sheet has a thickness of between about 0.02 inch and about 0.07 inch.4. The method of claim 1 , wherein the sheet is introduced as a roll to an operative site adjacent the first bone.5. The method of claim 1 , further comprising:wrapping the sheet around a second bone for fusing the first bone to the second bone.6. The method of claim 1 , wherein the wrapping includes shaping the sheet in vivo to an anatomy of the patient.7. The method of claim 1 , treats one or more of a long bone fracture claim 1 , a spinal injury claim 1 , and a maxiofacial injury.8. The method of claim 1 , further comprising disposing the sheet to interface with multiple sides of the first bone to aid in the retention of bone fragments or to aid in directing bone growth.9. The method of claim 1 , wherein the sheet is wrapped fully around the first bone.10. The method of claim 1 , wherein wrapping the sheet configures the sheet as a bone grafting platform.11. The method of claim 1 , wherein the sheet has one or more ...

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11-01-2018 дата публикации

SCAFFOLD FOR ALLOPROSTHETIC COMPOSITE IMPLANT

Номер: US20180008418A1
Автор: Bonutti Peter M.
Принадлежит:

An alloprosthetic composite implant comprising includes a structural porous scaffold having a pore density profile corresponding to a density profile of bone to be replaced. A plurality of cells are seeded within pores of the porous scaffold and grown by incubation. The cells may include osteoblasts and/or stem cells to form the structure of the implant, and one or more cartilage layers may be grown on top of the scaffold. The pore density profile of the scaffold may be formed based on one or both of the bone density profile of the bone to be removed, and the bone density profile of the native bone that will be in contact with the alloprosthetic implant. A robot may be employed reo resect the native bone and also to shape the alloprosthetic implant to fit into place in the native bone. 1. An alloprosthetic composite implant for replacing a joint comprising:a structural porous scaffold having a pore density profile corresponding to a density profile of a bone of the joint to be replaced;a plurality of cells seeded within pores of the porous scaffold; andat least one layer of cartilage on an end of the scaffold, the cartilage adapted to replace at least a portion of a joint surface of the joint.2. The alloprosthetic composite implant of claim 1 , wherein the scaffold includes an inner portion adapted to contact native bone of a patient claim 1 , and an outer portion opposite the inner portion claim 1 , the density of the outer portion being greater than the density of the inner portion.3. The alloprosthetic composite implant of claim 1 , wherein the porous scaffold is formed from metal and/or collagen.4. The alloprosthetic composite implant of claim 1 , wherein the cells seeded within pores of the porous scaffold are selected from the group consisting of stem cells and osteoblasts.5. The alloprosthetic composite implant of claim 1 , wherein the at least one layer of cartilage includes an outer gliding layer of cartilage and an inner layer of cartilage underneath the ...

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27-01-2022 дата публикации

SMALL JOINT FIXATION

Номер: US20220023057A1
Принадлежит: Tyber Medical LLC

A method of joining adjacent bone includes providing a medical device having a first implant portion, a second implant portion attached to the first implant portion, and a driver assembly having an instrument adapted to form an opening in bone. The driver assembly is integrally connected to and removably attached to the second implant portion at a connection, distal from the first implant portion. The driver assembly further has a wire driver extending therefrom, distal from the first implant portion. The method further includes inserting the wire driver into a wire driver tool; placing the first implant portion against a first bone structure; inserting the first implant portion into the first bone structure; removing the second implant portion from the driver assembly; using the driver assembly to form an opening in a second bone structure, adjacent to the first bone structure; and inserting the second implant portion into the opening. 1. A method of joining adjacent bone structures comprising the steps of: a first implant portion;', 'a second implant portion attached to the first implant portion; and', 'a driver assembly having an instrument adapted to form an opening in bone, the driver assembly being integrally connected to and removably attached to the second implant portion at a connection, distal from the first implant portion and the driver assembly further having a wire driver extending therefrom, distal from the first implant portion;, '(a) providing a medical device having(b) inserting the wire driver into a wire driver tool;(c) placing the first implant portion against a first bone structure;(d) inserting the first implant portion into the first bone structure;(e) removing the second implant portion from the driver assembly;(f) using the driver assembly to form an opening in a second bone structure, adjacent to the first bone structure; and(g) inserting the second implant portion into the opening.2. The method according to claim 1 , wherein step (d) is ...

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11-01-2018 дата публикации

BONE TISSUE ENGINEERING BY EX VIVO STEM CELLS ONGROWTH INTO THREE-DIMENSIONAL TRABECULAR METAL

Номер: US20180008747A1
Принадлежит:

Adult autologous stem cells cultured on a porous, three-dimensional tissue scaffold-implant for bone regeneration by the use of a hyaluronan and/or dexamethasone to accelerate bone healing alone or in combination with recombinant growth factors or transfected osteogenic genes. The scaffold-implant may be machined into a custom-shaped three-dimensional cell culture system for support of cell growth, reservoir for peptides, recombinant growth factors, cytokines and antineoplastic drugs in the presence of a hyaluronan and/or dexamethasone alone or in combination with growth factors or transfected osteogenic genes, to be assembled ex vivo in a tissue incubator for implantation into bone tissue. 1. (canceled)2. A method of generating tissue , comprising:providing or obtaining a tissue scaffold implant comprising a shaped, porous three-dimensional tissue scaffold with an inert biocompatible metal film present on surfaces of the porous three-dimensional tissue scaffold and with living cells in pores of the porous three-dimensional tissue scaffold, said porous three-dimensional tissue scaffold having an interconnected porosity for facilitating nutrient diffusion and media circulation throughout the porous three-dimensional tissue scaffold; andplacing said tissue scaffold implant in an ex-vivo bioreactor for generating tissue on said porous three-dimensional tissue scaffold.3. The method of claim 2 , wherein said tissue scaffold implant is shaped and sized as an acetabular cup implant.4. The method of claim 2 , wherein said porous three-dimensional tissue scaffold has a porosity of 50% to 90%.5. The method of claim 2 , wherein said inert biocompatible metal film is a chemical vapor deposited metal film.6. The method of claim 2 , wherein said living cells comprise mesenchymal stem cells.7. The method of further comprising at least one substance on surfaces of the inert biocompatible metal film that is present on surfaces of the porous three-dimensional tissue scaffold with ...

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10-01-2019 дата публикации

Orthopaedic Implant

Номер: US20190008645A1
Автор: MITROVIC Milija
Принадлежит:

For an orthopaedic implant, an insert body of a non-metallic material is arranged in a socket of an originally metallic material. The insert body consists of a ceramic based on zirconium dioxide, aluminum oxide or a mixed oxide ceramic, whereas the socket is preferably produced of pure titanium or a titanium alloy, for example Ti-6Al-4V, provided with a plurality of small holes and preferably embodied as a mesh or net structure. The titanium net structure is firstly imparted with ceramic properties with the aid of a silicate glass solder solidified or hardened in a ceramic firing, the subsequent connecting or joining between the ceramic insert body and the now also “ceramic” titanium socket is achieved by means of a glass solder which is based on silicon dioxide (SiO) and which connects or joins the two components with one another. 1231923. An orthopaedic implant for the replacement of joints , with an insert body of a non-metallic material of a ceramic and with a metallic socket of a titanium material that at least partially surrounds the insert body , characterized in that the surface of the metallic socket ( , ) is pre-coated with a silicate glass solder that is hardened in a ceramic firing , and its subsequent soldering with the outer surface of the insert body () is achieved via a glass solder () based on silicon dioxide (SiO) , which joins the two components with one another , and the metallic socket is embodied as a mesh or net structure () or as a perforated metal sheet () , respectively having a plurality of small holes penetrating therethrough.24-. (canceled)51. The orthopaedic implant according to claim 1 , characterized in that the insert body () consists of a ceramic based on aluminum oxide ceramic.61. The orthopaedic implant according to claim 1 , characterized in that the insert body () consists of a ceramic based on zirconium oxide ceramic.71. The orthopaedic implant according to claim 1 , characterized in that the insert body () consists of a ...

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14-01-2021 дата публикации

PHOTO-REACTIVE INKS AND THERMAL-CURABLE MATERIALS MADE THEREFROM

Номер: US20210008246A1
Принадлежит: Northwestern University

Provided herein photo-reactive inks, thermal-curable materials and objects (e.g., medical implants, scaffolds, devices, etc.) made therefrom, and methods of preparation and use thereof. 1. A composition comprising:(a) an acrylated or methacrylated polymer;(b) a photoinitiator, wherein exposure to light of an appropriate wavelength results in formation of a first reactive species from the photoinitiator compound; and(c) a thermal initiator, wherein exposure to heat results in in formation of a second reactive species from the thermal initiator compound.2. The composition of claim 1 , wherein the first reactive species and/or second reactive species is a free radical.3. The composition of claim 1 , wherein the appropriate wavelength of light is in the UV range.4. The composition of claim 1 , wherein exposure to heat comprises increasing temperature above a threshold temperature.5. The composition of claim 1 , further comprising one or more additional polymeric claim 1 , bioceramic claim 1 , or nanostructured components.6. The composition of claim 5 , wherein the acrylated or methacrylated polymer and the additional component are present at a ratio of between 1:10 and 10:1.7. The composition of claim 5 , wherein the additional component is hydroxyapatite.8. The composition of claim 5 , wherein the additional component is tricalcium phosphate (TCP).9. The composition of claim 5 , wherein the additional component is a metal organic framework (MOF).10. The composition of claim 9 , wherein the MOF is a copper (Cu) MOF.11. The composition of claim 1 , further comprising a bioceramic and an MOF.12. The composition of claim 11 , wherein the bioceramic is TCP and the MOF is a Cu MOF.13. The composition of claim 1 , further comprising a solvent.14. The composition of claim 1 , wherein the composition is a liquid.15. The composition of claim 14 , wherein the composition is an ink suitable for photoinitiated 3D printing.16. The composition of claim 15 , wherein exposure of the ...

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14-01-2021 дата публикации

ANTIBACTERIAL BIOMEDICAL IMPLANTS AND ASSOCIATED MATERIALS, APPARATUS, AND METHODS

Номер: US20210008254A1
Принадлежит:

Methods for improving the antibacterial characteristics of biomedical implants and related implants manufactured according to such methods. In some implementations, a biomedical implant comprising a silicon nitride ceramic material may be subjected to a surface roughening treatment so as to increase a surface roughness of at least a portion of the biomedical implant to a roughness profile having an arithmetic average of at least about 500 nm Ra. In some implementations, a coating may be applied to a biomedical implant. Such a coating may comprise a silicon nitride ceramic material, and may be applied instead of, or in addition to, the surface roughening treatment process. 1. A method for improving the antibacterial characteristics of a biomedical implant , the method comprising the steps of:providing a biomedical implant comprising a poly-ether-ether-ketone (PEEK) and/or titanium substrate material; andapplying a coating of a silicon nitride material on the biomedical implant by chemical vapor deposition (CVD), physical vapor deposition (PVD), plasma spraying, electro-deposition, electrophoretic deposition, slurry coating, or high-temperature diffusion, wherein the silicon nitride coating has a thickness of 1 μm to 125 μm.2. The method of claim 1 , wherein the silicon nitride material is selected from α-SiN claim 1 , β-SiN claim 1 , β-SiYAlON claim 1 , and combinations thereof.3. The method of claim 2 , wherein the silicon nitride material is β-SiYAlON.4. The method of claim 1 , wherein the coated biomedical implant has increased bacterial resistance as compared to the substrate material alone.5. The method of claim 1 , wherein the biomedical implant comprises an intervertebral spinal implant.6. The method of claim 1 , wherein the biomedical implant comprises PEEK.7. The method of claim 1 , wherein the biomedical implant comprises PEEK and a SiYAlON coating.8. The method of claim 1 , wherein the biomedical implant comprises titanium.9. The method of claim 1 , ...

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27-01-2022 дата публикации

BIOCAMPATIBLE HEAT AND y-RADIATION STABLE MEDICAL DEVICE LUBRICANT AND CORROSION PREVENTATIVE

Номер: US20220023495A9
Автор: KIMBLE Allan
Принадлежит:

A metal surgical instrument having improved corrosion resistance, wherein the surgical instrument is treated with a biocompatible polyphenyl ether-based polymeric coating. 1. A surgical instrument comprising a metal surface configured to contact a surgical patient and a biocompatible polymeric coating over the metal surface , wherein the polymeric coating comprises a polyphenyl ether polymer , and wherein the coating slows the rate of corrosion of the metal surface during storage.2. The surgical instrument of claim 1 , wherein the polyphenyl ether polymer is selected from the group consisting of a six-ring polyphenyl ether polymer claim 1 , a five-ring polyphenyl ether polymer claim 1 , a four-ring polyphenyl ether polymer claim 1 , a three- and four-ring oxy- and thioether polymer claim 1 , a three-ring polyphenyl ether polymer claim 1 , a two-ring diphenyl ether polymer claim 1 , or a combination thereof.3. The surgical instrument of claim 2 , wherein the polyphenyl ether polymer is a five-ring polyphenyl ether polymer.4. The surgical instrument of claim 1 , wherein the metal surface comprises metal alloys selected from the group consisting of stainless steel claim 1 , titanium or titanium alloy claim 1 , iron-nickel alloy claim 1 , molybdenum alloy or combinations thereof.5. The surgical instrument of claim 4 , wherein the metal alloy is selected from the group consisting of a stainless steel alloy claim 4 , a molybdenum alloy claim 4 , or a combination thereof.6. The surgical instrument of claim 5 , wherein the metal alloy comprises an M2 molybdenum alloy.7. The surgical instrument of claim 1 , wherein the polymeric coating is resistant to degradation by gamma radiation.8. The surgical instrument of claim 1 , wherein the instrument is a cutting instrument or an articulating instrument.9. The surgical instrument of claim 1 , wherein the surgical instrument is either sterile or non-sterile.10. The surgical instrument of claim 9 , wherein the surgical instrument is ...

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27-01-2022 дата публикации

METAL POWDER FOR 3D-PRINTING

Номер: US20220023941A1
Принадлежит: TANIOBIS GMBH

The present invention relates to metal powders which are suitable to be employed in 3D printing processes as well as a process for the production of said powders. 125-. (canceled)26: A metal powder suitable for use in a 3D printing process , the metal powder comprising:a metal selected from the group consisting of tantalum, titanium and niobium, and alloys of tantalum, titanium and niobium,wherein,{'sub': 'A', 'claim-text': {'br': None, 'sub': A', 'Feret min', 'Feret max, 'i': =x', '/x, 'Ψ.'}, 'particles of the metal powder comprise an average aspect ratio Ψof from 0.7 to 1, and'}27: The metal powder as recited in claim 26 , wherein the metal powder comprises an alloy of titanium and niobium.28: The metal powder as recited in claim 27 , wherein the alloy further comprises tantalum.29: The metal powder as recited in claim 26 , wherein the metal powder comprises a metal alloy of titanium claim 26 , niobium and tantalum.30: The metal powder as recited in claim 26 , wherein the metal powder further comprises:a tap density of 40 to 80% of a theoretical density of the metal powder, each determined according to ASTM B527.31: The metal powder as recited in claim 26 , wherein the metal powder further comprises:a flowability of less than 25 s/50 g, determined according to ASTM B213.32: The metal powder as recited in claim 26 , wherein the metal powder further comprises:a particle size distribution D10>2 μm,a particle size distribution D90<80 μm, anda particle size distribution D50 of 20 to 50 μm,each determined according to ASTM B822.33: The metal powder as recited in claim 26 , wherein the metal powder further comprises:a particle size distribution D10 of >20 μm,a particle size distribution D90 of <150 μm, anda particle size distribution D50 of 40 to 90 μm,each determined according to ASTM B822.34: The metal powder as recited in claim 26 , wherein the metal powder further comprises:a powder distribution D10 of >50 μm,a powder distribution D90 of <240 μm, anda powder ...

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09-01-2020 дата публикации

IN-SITU FORMED INTERVERTEBRAL FUSION DEVICE AND METHOD

Номер: US20200008950A1
Принадлежит: DePuy Synthes Products, Inc.

An orthopedic device for implanting between adjacent vertebrae comprising: an arcuate balloon and a hardenable material within said balloon. In some embodiments, the balloon has a footprint that substantially corresponds to a perimeter of a vertebral endplate. An inflatable device is inserted through a cannula into an intervertebral space and oriented so that, upon expansion, a natural angle between vertebrae will be at least partially restored. At least one component selected from the group consisting of a load-bearing component and an osteobiologic component is directed into the inflatable device through a fluid communication means. 1. (canceled)2. An expandable spinal fusion implant , comprising:a) an upper endplate having an upper surface configured to engage bone and a lower surface;b) a lower endplate having a lower surface configured to engage bone and an upper surface;c) a core having a first mating surface that mates with the upper endplate via a slidable guide-track and a second mating surface that mates with the lower endplate via a slidable guide-track; andd) an elongate metallic element extending longitudinally through the core;wherein the core includes an upper ramp component having a first ramped surface and a lower ramp component having a second ramped surface opposing the first ramped surface, andwherein longitudinal translation of the ramped surfaces increases a height between the upper surface of the upper endplate and the lower surface of the lower endplate.3. The implant of claim 2 , wherein the upper and lower endplates and the core are each arcuate in a plane parallel to their length4. The implant of claim 2 , wherein a cross-section taken through the endplates and the core defines an I shape.5. The implant of claim 2 , wherein the elongate metallic element does not contact either of the upper and lower endplates.6. The implant of claim 2 , wherein the first and second ramped surfaces bear against each other.7. An expandable spinal fusion ...

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10-01-2019 дата публикации

IRON-BASED ABSORBABLE AND IMPLANTABLE MEDICAL DEVICE AND MANUFACTURING METHOD THEREOF

Номер: US20190008994A1

Provided are an iron-based absorbable and implantable medical device and manufacturing method thereof. The iron-based absorbable and implantable medical device () comprises a substrate (), a degradable polymer layer (), and an anionic surfactant layer () located between the substrate () and the degradable polymer layer (). The anionic surfactant, by using the hydrophobicity thereof, can form a hydrophobic barrier layer in a solution to isolate a surface of the iron-based substrate () from a body fluid environment, thereby avoiding direct contact with an acidic environment resulting from degradation of the degradable polymer layer () at the initial and early stages of implantation, thus preventing severe local corrosion of the iron-based substrate (). 1. An iron-based absorbable and implantable medical device , comprising a substrate and a degradable polymer layer , wherein the implantable medical device further comprises an anionic surfactant layer , with the anionic surfactant layer located between the substrate and the degradable polymer layer.2. The iron-based absorbable and implantable medical device according to claim 1 , wherein the anionic surfactant layer is connected to the substrate by chemical adsorption.3. The iron-based absorbable and implantable medical device according to claim 1 , wherein the anionic surfactant in the anionic surfactant layer comprises a hydrophilic group and hydrophobic chain claim 1 , wherein the hydrophilic group is a polar hydrophilic group claim 1 , and the hydrophobic chain is a non-polar hydrophobic chain.4. The iron-based absorbable and implantable medical device according to claim 3 , wherein the hydrophilic group is selected from at least one of carboxylic acid group claim 3 , sulfate group and sulfonate group.5. The iron-based absorbable and implantable medical device according to claim 3 , wherein the hydrophobic chain comprises a hydrocarbon chain claim 3 , the hydrocarbon chain comprising at least 8 carbon atoms.6. The ...

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10-01-2019 дата публикации

Molybdenum Alloys for Medical Devices

Номер: US20190008995A1
Автор: Roth Noah
Принадлежит:

A medical device having improved surface hardness and wear resistance properties. The medical device has a body that includes a molybdenum and rhenium alloy. The outer surface of the body has a nitride surface layer that includes nitrogen, molybdenum and rhenium. 1. A medical device having improved surface hardness and wear resistance properties , said medical device comprising a body that includes a molybdenum alloy , said molybdenum alloy includes molybdenum and one or more alloying agents selected from the group consisting of calcium , carbon , cerium oxide , chromium , cobalt , copper , gold , hafnium , iron , lanthanum oxide , lead , magnesium , nickel , niobium , osmium , platinum , rare earth metals , rhenium , silver , tantalum , technetium , titanium , tungsten , vanadium , yttrium , yttrium oxide , zinc , zirconium , and zirconium oxide , an outer surface of said body that includes said molybdenum alloy has a nitride surface layer that includes nitrogen , and molybdenum.2. The medical device as defined in claim 1 , wherein said molybdenum alloy includes 40-99 wt. % molybdenum and 1-60 wt. % rhenium.3. The medical device as defined in claim 2 , wherein said molybdenum alloy includes 40-99 wt. % molybdenum and 1-40 wt. % rhenium.4. The medical device as defined in claim 1 , wherein a thickness of said nitride surface layer is less than 1 mm.5. The medical device as defined in claim 2 , wherein a thickness of said nitride surface layer is less than 1 mm.6. The medical device as defined in claim 4 , wherein a thickness of said nitride surface layer is 50 nanometers to 0.1 mm.7. The medical device as defined in claim 5 , wherein a thickness of said nitride surface layer is 50 nanometers to 0.1 mm.8. The medical device as defined in claim 1 , wherein a weight percent of nitrogen in said nitride surface layer is less than a weight percent of said molybdenum claim 1 , said weight percent of nitrogen in said nitride surface layer is less than a weight percent of ...

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10-01-2019 дата публикации

Implanted Device

Номер: US20190008996A1

Disclosed is an implanted device, comprising a device base body and an active drug, wherein the device base body is pure zinc and/or a zinc alloy, the zinc content in the device base body is 0.1-100%, and the active drug comprises anti-allergic drugs. After the implantation of the implanted device into the human body, the surrounding tissues of the implant would not have a clear hypersensitive reaction due to the presence of the anti-allergic drugs, and the implanted device can be used to be implanted into the body for supporting organ chambers, to fill the hollow chambers of the organs and tissues or as orthopaedic implants etc. 1. An implanted device , comprising a device substrate and an active drug , wherein the device substrate is pure zinc and/or a zinc alloy; the device substrate contains 0.1 to 100 percent of zinc; and the active drug comprises an anti-allergic drug.2. The implanted device according to claim 1 , wherein the implanted device further comprises a zinc complexing agent; wherein the zinc complexing agent and the pure zinc or the zinc alloy in the device substrate form a complex in body fluid.3. The implanted device according to claim 2 , wherein the zinc complexing agent contains at least one coordination group; the coordination group is selected from the group consisting of hydroxyl on polycyclic aromatic hydrocarbon claim 2 , sulfydryl claim 2 , amino claim 2 , an aromatic heterocyclic group claim 2 , nitroso claim 2 , carbonyl claim 2 , sulpho claim 2 , a phosphate group and an organic phosphorus group; the hydroxyl on the polycyclic aromatic hydrocarbon is a phenolic hydroxyl; and the aromatic heterocyclic group is selected from the group consisting of furyl claim 2 , pyrryl claim 2 , imidazolyl claim 2 , triazolyl claim 2 , thienyl claim 2 , thiazolyl claim 2 , pyridyl claim 2 , a pyridone group claim 2 , pyranyl claim 2 , a pyrone group claim 2 , pyrimidyl claim 2 , pyridazinyl claim 2 , pyrazinyl claim 2 , quinolyl claim 2 , isoquinolyl ...

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10-01-2019 дата публикации

OSTEOCHONDRAL SCAFFOLD

Номер: US20190009004A1
Автор: Blunn Gordon, LIU Chaozong
Принадлежит: UCL Business PLC

There is described a multiphasic osteochondral scaffold for osteochondral defect repair, the scaffold comprising a bone phase and a cartilage phase, wherein the bone phase comprises a support matrix and the cartilage phase comprises a polymeric matrix, and the scaffold comprises a non-porous layer between the bone phase and the cartilage phase. Also described is a multiphasic osteochondral scaffold for osteochondral defect repair, the scaffold comprising a bone phase and a cartilage phase, wherein the bone phase comprises a support matrix and the cartilage phase comprises a polymeric matrix, and wherein the support matrix is tapered so that the dimensions of the support matrix are less at the lower end of the support matrix than at the upper end of the support matrix. 1. A multiphasic osteochondral scaffold for osteochondral defect repair , the scaffold comprising a bone phase and a cartilage phase , wherein the bone phase comprises a support matrix and the cartilage phase comprises a polymeric matrix , and the scaffold comprises a non-porous layer between the bone phase and the cartilage phase.2. A multiphasic osteochondral scaffold for osteochondral defect repair , the scaffold comprising a bone phase and a cartilage phase , wherein the bone phase comprises a support matrix and the cartilage phase comprises a polymeric matrix , and wherein the support matrix is tapered so that the dimensions of the support matrix are less at the lower end of the support matrix than at the upper end of the support matrix.3. The scaffold of claim 1 , wherein the support matrix is formed of metal.4. The scaffold of claim 3 , wherein the support matrix is formed of titanium.5. The scaffold of claim 1 , wherein the support matrix comprises one or more calcium phosphate such as beta-tricalcium phosphate claim 1 , hydroxyapatite and/or biphasic calcium phosphate.6. The scaffold of claim 1 , wherein the support matrix comprises collagen.7. The scaffold of claim 1 , wherein the support ...

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10-01-2019 дата публикации

Cell sheet embedding agent, cell sheet-containing composition, and kit

Номер: US20190010214A1
Принадлежит: Fujifilm Corp, Terumo Corp

In the formula, X and Y each independently represent an amino acid, m is an integer of 2 to 10, n is an integer of 3 to 100, and A and B each represent any amino acid or any amino acid sequence.

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14-01-2021 дата публикации

SHAPE-MEMORY ALLOY AND SHAPE-MEMORY ALLOY WIRE

Номер: US20210010120A1
Принадлежит:

The present invention provides a shape-memory alloy including a Au—Cu—Al alloy having 20 at % or more and 40 at % or less Cu and 15 at % or more and 30 at % or less Al, with the balance being Au and inevitable impurities. The shape-memory alloy has a Vickers hardness of 360 Hv or less. The Au—Cu—Al alloy of the present invention is an alloy capable of developing both biocompatibility and a shape-memory effect, and further capable of achieving artifactlessness in a magnetic environment. The Au—Cu—Al alloy can be produced by heat-treating a clad material formed of a combination of a hollow material made of a Au—Cu alloy and a core material made of metallic Al at 500° C. or more and 700° C. or less. 1. A shape-memory alloy comprising a Au—Cu—Al alloy having 20 at % or more and 40 at % or less Cu and 15 at % or more and 30 at % or less Al , with the balance being Au and inevitable impurities , whereina Au concentration analyzed with respect to an arbitrary cross-section has a standard deviation of 1.0 at % or less, andthe shape-memory alloy has a bulk susceptibility of −24 ppm or more and 6 ppm or less, and has a Vickers hardness of 360 Hv or less.23-. (canceled)4. A shape-memory alloy wire claim 1 , comprising the shape-memory alloy defined in and having a diameter of 1 mm or less.5. The shape-memory alloy wire according to claim 4 , wherein the wire has a diameter of 10 μm or more and 100 μm or less.6. The shape-memory alloy wire according to claim 4 , wherein a Au concentration analyzed with respect to an arbitrary cross-section has a standard deviation of 1.0 at % or less.7. A method for producing the shape-memory alloy defined in claim 1 , comprising the steps of:inserting a core material made of metallic Al into a hollow material made of a Au—Cu alloy, and closely attaching the both materials provide a clad material; andheat-treating the clad material at a temperature of 500° C. or more and 700° C. or less, thereby providing a Au—Cu—Al alloy.8. A method for ...

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19-01-2017 дата публикации

Platelet-Derived Growth Factor Compositions and Methods of Use Thereof

Номер: US20170014545A1
Автор: Samuel E. Lynch
Принадлежит: Biomimetic Therapeutics LLC

A method for promoting growth of bone, periodontium, ligament, or cartilage in a mammal by applying to the bone, periodontium, ligament, or cartilage a composition comprising platelet-derived growth factor at a concentration in the range of about 0.1 mg/mL to about 1.0 mg/mL in a pharmaceutically acceptable liquid carrier and a pharmaceutically-acceptable solid carrier.

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19-01-2017 дата публикации

MAGNESIUM/POLYMER COMPOSITE-CONTAINING SCAFFOLDS TO ENHANCE TISSUE REGENERATION

Номер: US20170014548A1

The invention relates to magnesium-polymer composites, methods for their preparation and applications for their use. The composites include a combination of magnesium particles and polymer matrix. The polymer can include, but is not limited to, poly(lactic co-glycolic) acid. In certain embodiments, the composites of the invention are particularly useful for forming medical devices for implantation into a body of a patient. In certain other embodiments, the magnesium-polymer composites are useful for wound healing compositions for administration to an exterior surface of a body of a patient. 1. A magnesium-polymer composite for tissue healing and regeneration , comprising:magnesium particles; andpolymer matrix, wherein the magnesium particles are embedded in the polymer matrix.2. The composite of claim 1 , wherein the magnesium particles are selected from the group consisting of pure magnesium particles and powder claim 1 , magnesium alloy particles and powder claim 1 , metallic magnesium claim 1 , magnesium salt particles and powder claim 1 , and combinations thereof.3. The composite of claim 1 , wherein the polymer matrix is selected from the group consisting of calcium phosphate claim 1 , hydroxyapatite claim 1 , lecithin claim 1 , collagen claim 1 , fibrin claim 1 , gelatin claim 1 , silk claim 1 , elastin claim 1 , chitosan claim 1 , starch claim 1 , alginate claim 1 , hyaluronic acid claim 1 , chondroitin claim 1 , agarose claim 1 , cellulose claim 1 , polyester claim 1 , poly(glycolic acid) claim 1 , poly(L-lactic acid) claim 1 , poly(lactic-co-glycolic acid) claim 1 , poly(caprolactone) claim 1 , poly(propylene fumarate) claim 1 , polyorthoester claim 1 , polyanhydride claim 1 , poly(etheylene glycol) claim 1 , polycarbonate claim 1 , polyurethane claim 1 , elastomer claim 1 , poly(glycerol sebacate) claim 1 , and mixtures thereof.4. The composite of claim 1 , wherein at least one of the magnesium particles and the polymer matrix is selected such that ...

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03-02-2022 дата публикации

METHODS FOR AGGREGATION OF PROTEINS

Номер: US20220033448A1
Принадлежит:

The present application belongs to the field of functional peptides and more particularly to the field of controlled protein aggregation. The invention discloses molecules of a peptide structure as defined in the claims and methods of using such molecules for therapeutic applications and for diagnostic uses, as well as in other applications such as in the agbio field and in industrial biotechnology. The molecules can be used for curing and/or stabilizing infections such as bacterial,fimgal and viral diseases, but are also useful in non-infectious human and veterinary diseases. The molecules can also be used for the detection of protein biomarkers and for the prognosis and diagnosis of a variety of diseases. 176.-. (canceled)77. A method for down-regulating the biological function of a protein , comprising [{'sub': 0', '1', '1', '2', '1', '3', '2', '4', '2', '1', '2, '(B) Z—X—Y—X—Z—X—Y—X—Z, wherein Zis a linker and Zis selected from a linker or nothing,'}, {'sub': 0', '1', '1', '2', '1', '3', '2', '4', '2', '5', '3', '6', '3', '1', '2', '3, '(C) Z—X—Y—X—Z—X—Y—X—Z—X—Y—X—Z, wherein Zand Zare each independently a linker and Zis selected from a linker or nothing,'}, {'sub': 0', '1', '1', '2', '1', '3', '2', '4', '2', '5', '3', '6', '3', '7', '4', '8', '4', '1', '2', '3', '4, '(D) Z—X—Y—X—Z—X—Y—X—Z—X—Y—X—Z—X—Y—X—Z, wherein Z, Z, and Zare each independently a linker and Zis selected from a linker or nothing,'}, {'sub': 0', '1', '1', '2', '1', '3', '2', '4', '2', '5', '3', '6', '0', '4', '8', '4', '0', '5', '10', '5', '1', '2', '3', '4', '5, '(E) Z—X—Y—X—Z—X—Y—X—Z—X—Y—X—Z—Y-X—Z—X—Y—X—Z, wherein Z, Z, Z, and Zare each independently a linker and Zis selected from a linker or nothing'}], '(a) contacting the protein with a molecule of structure (B), (C), (D), or (E) [{'sub': '0', 'Zis a linker or nothing,'}, {'sub': 1', '2', '3', '4', '5, 'at least one of Y, Y, Y, Y, and Yis identical to, or differs by 1 or 2 amino acid substitutions from, a stretch of contiguous amino acids ...

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18-01-2018 дата публикации

Bioactive material

Номер: US20180014936A1

The present invention relates to a bioactive material and to a method of producing a bioactive material which is suitable for use as an implant or for use as a bone substitute for repairing bone.

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18-01-2018 дата публикации

METHOD FOR PRODUCING ALPHA-CALCIUM SULFATE HEMIHYDRATE BONE GRAFT

Номер: US20180015200A1
Принадлежит:

The present invention discloses a method for producing the alpha-calcium sulfate hemihydrate bone graft, which comprises the following steps: mixing calcium sulfate dihydrate and deionized water to produce calcium sulfate dihydrate paste; stirring and heating the calcium sulfate dihydrate paste at least 160° C. within 100-350 psi to produce the conversion calcium sulfate hemihydrate, filtering the conversion calcium sulfate hemihydrate with high temperature to produce the filtered calcium sulfate hemihydrate, and washing the filtered calcium sulfate hemihydrate by absolute alcohol to get the alpha-calcium sulfate hemihydrate bone graft. The present invention does not use any catalyst, possesses a high purity, high mechanical strength, and good biocompatibility, facilitates bone growth and angiogenesis, requires only 31° C., the highest temperature, during the curing process. It makes the present invention more secure in the biomedical applications. 1. A method for producing an alpha-calcium sulfate hemihydrate bone graft , comprising the following steps of:{'sub': '1', 'S: mixing calcium sulfate dihydrate and pure water to produce a calcium sulfate dihydrate paste;'}{'sub': '2', 'S: stirring and heating the calcium sulfate dihydrate paste to at least 160° C. for producing a conversion calcium sulfate hemihydrate;'}{'sub': '3', 'S: filtering the conversion calcium sulfate hemihydrate with a high temperature to produce a filtered calcium sulfate hemihydrate; and'}{'sub': '4', 'S: washing the filtered calcium sulfate hemihydrate by an absolute alcohol to generate the alpha-calcium sulfate hemihydrate bone graft.'}2. The method of claim 1 , wherein the step Sis for stirring the calcium sulfate dihydrate paste by a magnetic stir bar.3. The method of claim 1 , wherein the step Sis for heating the calcium sulfate dihydrate paste to 160° C. and then maintaining at the temperature for 10 minutes to produce the conversion calcium sulfate hemihydrate.4. The method of claim 3 , ...

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18-01-2018 дата публикации

SELF-ASSEMBLED ORGANOSILANE COATINGS FOR RESORBABLE METAL MEDICAL DEVICES

Номер: US20180015203A1

The invention relates to self-assembled organosilane coatings for resorbable medical implant devices. The coatings can be prepared from coating compositions containing organosilane and can be applied to metal or metal alloy substrates. Prior to applying the coatings, the surfaces of the substrates can be pre-treated. The coatings can be functionalized with a binding compound that is coupled with an active component. The coatings can be applied using various techniques and apparatus, more particularly, by a deep-coating process conducted at ambient conditions. 1. A medical implant device , comprising:substrate comprising metal and having an outer surface;self-assembled organosilane-containing coating applied to the substrate;binding compound combined with the coating; andactive component coupled to the binding compound.2. The device of claim 1 , wherein the metal is selected from the group consisting of magnesium and magnesium alloy.3. The device of claim 1 , further comprising pretreatment applied to the outer surface of the substrate and the coating being applied to the pretreatment.4. The device of claim 1 , wherein the coating comprises alkyltriethoxysilane.5. The device of claim 4 , wherein the alkyltriethoxysilane has a tail comprising C-Caliphatic backbone and a silane head.6. The device of claim 1 , wherein the coating comprises a co-polymer of decyltriethoxysilane and tetramethoxysilane.7. The device of claim 1 , wherein the binding compound comprises 3-aminopropyl-trimethoxysilane.8. The device of claim 3 , wherein the pretreatment is selected from the group consisting of polishing with nitric acid claim 3 , etching with nitric acid claim 3 , passivating with sodium hydroxide claim 3 , and combinations thereof.9. The device of claim 1 , wherein the binding compound is selected from the group consisting of amine claim 1 , carboxyl claim 1 , thiol claim 1 , hydroxyl and mixtures thereof.10. The device of claim 1 , wherein the binding compound is coupled to a ...

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18-01-2018 дата публикации

BONE REPAIRING MATERIAL AND METHOD FOR PRODUCING THEREOF

Номер: US20180015206A1
Принадлежит:

A bone repairing material comprises a composition including an α-calcium sulfate hemihydrate and an autologous bone powder, wherein the bone repairing material contains 20˜60 weight percent of the autologous bone powder and 40˜80 weight percent of the α-calcium sulfate hemihydrate. The bone repairing material has a particle size in the range of 50˜1,000 μm. A method for producing the bone repairing material comprises the following steps: producing the α-calcium sulfate hemihydrate from a calcium sulfate dihydrate by microwave heating; grinding an autologous bone for generating the autologous bone powder; and, mixing the α-calcium sulfate hemihydrate and the autologous bone powder to form the bone repairing material. 1. A bone repairing material comprises a composition including an α-calcium sulfate hemihydrate and an autologous bone powder , wherein the bone repairing material contains 20˜60 weight percent of the autologous bone powder and 40˜80 weight percent of the α-calcium sulfate hemihydrate , and the bone repairing material has a particle size in the range of 50˜1 ,000 μm.2. A method for producing the bone repairing material of claim 1 , comprising the following steps:producing the α-calcium sulfate hemihydrate from a calcium sulfate dihydrate by microwave heating;grinding an autologous bone for generating the autologous bone powder; andmixing the α-calcium sulfate hemihydrate and the autologous bone powder to form the bone repairing material.3. The method for producing the bone repairing material of claim 2 , wherein the step of mixing the α-calcium sulfate hemihydrate and the autologous bone powder to form the bone repairing material further comprises the following substeps:taking the autologous bone powder and the α-calcium sulfate hemihydrate into a stirring device and stirring for a first predetermined time, wherein the autologous bone powder is accounted for 20˜60 weight percent of the bone repairing material and the α-calcium sulfate hemihydrate is ...

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21-01-2016 дата публикации

SETTING OF HARDENABLE BONE SUBSTITUTE

Номер: US20160015856A1
Принадлежит:

The invention relates to hardenable ceramic bone substitute compositions having improved setting, powders for such compositions and methods for their manufacture and use in medical treatment. More specifically the invention relates to hardenable bone substitute powder and hardenable bone substitute paste with improved setting properties, comprising calcium sulfate and heat-treated hydroxyapatite (passivated HA), which bone substitute is suitable for treatment of disorders of supportive tissue such as bone loss, bone fracture, bone trauma and osteomyelitis.

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