Ceramic Sliding Bearing

Disclosed is a ceramic sliding partner for a sliding bearing, said sliding partner being made at least in part, preferably entirely, of a ceramic foam. The ceramic sliding partner comprises at least one sliding surface on which a sliding partner can move, said sliding surface being made at least in part, preferably entirely, of a ceramic foam.

ARTIFICIAL ACETABULUM WITH MULTI-LAYER SHELL CORE COMPOSITE STRUCTURE

An artificial acetabulum having a multilayer shell-core composite structure includes a ceramic acetabular liner, a transition layer and an acetabular shell. The acetabular shell is made of a porous metal, a porous alloy or a porous toughened ceramic; the ceramic acetabular liner is made of a ceramic material; and the transition layer is made of a composite material comprising materials of the acetabular shell and the ceramic acetabular liner. The artificial acetabulum is manufactured through sintering a green body of successively stacked layers of the ceramic acetabular liner, the transition layer and the acetabular shell, and the green body of successively stacked layers is obtained through a powder co-injection molding process. The ceramic acetabular liner of the artificial acetabulum has a high rigidness, corrosion-proof and wear-proof performance. The acetabular shell of the artificial acetabulum has a high toughness and shockresistant performance. 1. An artificial acetabulum having a multilayer shell-core composite structure , comprising: a ceramic acetabular liner , a transition layer and an acetabular shell ,wherein the acetabular shell is made of a porous metal, a porous alloy or a porous toughened ceramic, the ceramic acetabular liner is made of a ceramic material, and the transition layer is made of a composite material comprising materials of the acetabular shell and the ceramic acetabular liner; andwherein the artificial acetabulum is manufactured through sintering a green body of successively stacked layers of the ceramic acetabular liner, the transition layer and the acetabular shell, and the green body of successively stacked layers of the ceramic acetabular liner, the transition layer and the acetabular shell is obtained through a powder co-injection molding process.2. The artificial acetabulum according to claim 1 , wherein the transition layer has a single-layer or multi-layer structure.3. The artificial acetabulum according to claim 1 , wherein ...

Artificial femoral ball head with multi-layer shell core composite structure

An artificial femoral ball head having a multilayer shell-core composite structure includes a spherical shell layer, a transition layer and an inner core. The inner core is made of a toughened ceramic, the spherical shell layer is made of a ceramic material, and the transition layer is made of a composite material comprising materials of the inner core and the spherical shell layer. The artificial femoral ball head is manufactured through sintering a green body of successively stacked layers of the spherical shell layer, the transition layer and the inner core, and the green body of successively stacked layers is obtained through a powder co-injection molding process. The spherical shell layer of the artificial femoral head has a high rigidness, corrosion-proof and wear-proof performance. The inner core of the artificial femoral head has a high toughness and shockresistant performance.

Embolus Blood Clot Filter Utilizable with a Single Delivery System or a Single Retrieval System in One of a Femoral or Jugular Access

A blood filter delivery system for delivering a filter into a vein from either a femoral or jugular access. The preferred system includes an introducer and a push-rod with a spline member disposed along the push-rod and a pusher member disposed on a distal end. The spline member has a main body, first and second boss portions spaced apart along the longitudinal axis to provide a gap for retaining anchor members of the filter during delivery via the introducer. In an alternative embodiment, a preferred filter includes first and second filter structures diverging in opposite directions. A link is connected to portions of each of the first and second filter structures so that each filter structure can be independently collapsed into a generally cylindrical shape. 1. A blood filter comprising:first and second filter structures that diverge away from a longitudinal axis in opposite directions in a first configuration of the filter structures; anda link connected to discrete portions of each of the first and second filter structures so that each filter structure is independently collapsed into a generally cylindrical shape in a second configuration.2. The blood filter of claim 1 , wherein each of the first and second filter structures comprises at least two elongated members.3. The blood filter of claim 2 , wherein each of the at least two elongated members comprises a single wire having a first section defining a portion of the first filter structure claim 2 , a middle section disposed proximate the longitudinal axis claim 2 , and a second section defining a portion of the second filter structure.4. The blood filter of claim 3 , where the link comprises an elongated member connected to the first section of each wire of the first filter structure.5. The blood filter of claim 3 , wherein the link comprises an elongated member connected to the first section of each wire of the second filter structure.6. The blood filter of claim 3 , wherein each of the elongated members ...

APPLICATION OF A POROUS MATERIAL

The present invention relates to a new application of a porous material. The porous material is composed of pore cavities and cavity walls surrounding the pore cavities, wherein the pore cavities of the porous material are three-dimensionally interconnected; the capillary force of the porous material is 5 Pa or more; and a contact angle between a surface of the cavity wall of the porous material and a liquid phase material circulating therein is less than 90°. The porous material is applied as a microcirculation power source. The porous material is used in a circulation system as a microcirculation power source for providing material exchange. The porous material is used in a separation system as a microcirculation power source for providing material separation and movement. The porous material is used in a medical implant system as a microcirculation power source for providing tissue cell growth. 1. A porous material , comprising a plurality of pore cavities and cavity walls surrounding the pore cavities , wherein the pore cavities of the porous material are three-dimensionally interconnected; a capillary force of the porous material is 5 Pa or more; and a contact angle between a surface of the cavity wall of the porous material and a liquid phase material circulating therein is less than 90°; the porous material is applied as a microcirculation power source.2. A circulation system comprising a microcirculation power source providing a power source of material exchange , wherein the microcirculation power source is a porous material , and the porous material comprises a plurality of pore cavities and cavity walls surrounding the pore cavities , wherein the pore cavities of the porous material are three-dimensionally interconnected; a capillary force of the porous material is 5 Pa or more; and a contact angle between a surface of the cavity wall of the porous material and a liquid phase material circulating therein is less than 90.3. A separation system comprising a ...

Embolus Blood Clot Filter Utilizable with a Single Delivery System or a Single Retrieval System in One of a Femoral or Jugular Access

A blood filter delivery system for delivering a filter into a vein from either a femoral or jugular access. The preferred system includes an introducer and a push-rod with a spline member disposed along the push-rod and a pusher member disposed on a distal end. The spline member has a main body, first and second boss portions spaced apart along the longitudinal axis to provide a gap for retaining anchor members of the filter during delivery via the introducer. In an alternative embodiment, a preferred filter includes first and second filter structures diverging in opposite directions. A link is connected to portions of each of the first and second filter structures so that each filter structure can be independently collapsed into a generally cylindrical shape.

Articulating diamond-surfaced spinal implants

Interior insert ball and dual socket joint

A spinal implant is inserted between adjacent vertebrae to function as an disk prosthesis. The prosthesis has two plates fastened to adjacent vertebrae facing each other. The facing sides of the plates each have a depending skirt formed as concentric arcs of about 90 degrees. The skirts are either bowed or tapered in the axial direction. Depressions are centrally located between the arcs of the plates and a ball is universally movable in the depressions. A spring mechanism is centrally located in the plates to provide axial compression. One plate has a through bore and one plate has a receptacle, each, receiving a sleeve with a depression for holding the ball.

Протез спинного диска

Изобретение относится к медицине. Протез межпозвонкового диска для полной замены межпозвонкового диска шейного или поясничного отдела позвоночника, в состав которого входит верхняя пластина скольжения, нижняя пластина скольжения и промежуточная пластина скольжения. Верхняя пластина скольжения имеет выступающую вверх анкерную конструкцию на своей верхней поверхности для ее фиксации по отношению к верхнему позвонку и вогнутое образование на ее нижней внутренней поверхности, окруженной кромкой. Нижняя пластина скольжения имеет выступающую вниз анкерную конструкцию на своей нижней поверхности для ее фиксации по отношению к нижнему позвонку и плоскую верхнюю внутреннюю поверхность, окружающую направляющую канавку с фланговыми поверхностями, идущую спереди назад с первым упором сзади и со вторым упором спереди. Промежуточная пластина скольжения расположена между верхней и нижней пластинами скольжения и имеет выпуклое образование на своей верхней поверхности, контактирующее с вогнутым образованием на внутренней поверхности верхней пластины скольжения. Выпуклое образование окружено кромкой и плоской нижней поверхностью скольжения с направляющим выступом с боковыми поверхностями, идущими спереди назад и расположенными лицом к боковым поверхностям направляющей канавки. Направляющий выступ контактирует с направляющей канавкой нижней пластины таким образом, что направляющий выступ скользит по прямой линии вперед-назад в направляющей канавке. Направляющий выступ выполнен из частично упругого состава, так что направляющий выступ может упруго деформироваться. В направляющем выступе выполнена, по крайней мере, одна открытая прорезь так, чтобы направляющий выступ мог деформироваться при сжатии, в то время как область скольжения выпуклого образования промежуточной пластины скольжения и вогнутого образования верхней пластины скольжения ограничивает расширение, сгибание, боковой изгиб вправо и влево, и осевое вращение в правую и левую стороны. Изобретение обеспечивает возможность ...

Протез спинного диска

1. Протез межпозвонкового диска для полной замены межпозвонкового диска шейного или поясничного отдела позвоночника, в состав которого входит:верхняя пластина скольжения (2) с выступающей вверх анкерной конструкцией (3) на своей верхней поверхности для ее фиксации по отношению к верхнему позвонку и с вогнутым образованием (8) на ее нижней внутренней поверхности (16), окруженной кромкой (14);нижняя пластина скольжения (1) с выступающей вниз анкерной конструкцией (3) на своей нижней поверхности для ее фиксации по отношению к нижнему позвонку и с плоской верхней внутренней поверхностью, окружающей направляющую канавку (7) с фланговыми поверхностями (6), идущую спереди назад с первым упором (21) сзади и со вторым упором (22) спереди, а такжепромежуточная пластина скольжения (13) между верхней (2) и нижней пластинами скольжения (1) с выпуклым образованием (4) на своей верхней поверхности (15), контактирующим с вогнутым образованием (8) на внутренней поверхности (16) верхней пластины скольжения (2), и с направляющим выступом (5) с флангами на ее плоской нижней поверхности скольжения, контактирующим с фланговыми поверхностями (6) направляющей канавки, идущей спереди назад, отличающийся тем, что направляющая канавка (7) нижней пластины (1) охватывает направляющий выступ (5) промежуточной пластины скольжения (13), обеспечивая, тем самым, поступательное скольжение направляющего выступа (5) вперед-назад в направляющей канавке (7), в то время как в области скольжения выпуклого образования (4) промежуточной пластины скольжения (13) и вогнутого образования (8) верхней пластины скольжения (2) ограничено расширение, сгибание, боковой изгиб вправо и влево, и осе РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (51) МПК A61F 2/44 (13) 2013 155 981 A (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ЗАЯВКА НА ИЗОБРЕТЕНИЕ (21)(22) Заявка: 2013155981/14, 03.02.2012 (71) Заявитель(и): УЛЬРИХ ГМБХ ЭНД КО. КГ (DE) Приоритет(ы): (30) Конвенционный приоритет: (72) Автор(ы): БЮТТНЕР-ЯНЦ ...

Wear resistant ball and socket joint

A ball and socket joint providing longevity especially suitable for use in implants in human bodies. The ball is designed to incorporate specified strength, hardness, and smoothness characteristics. The socket has a cooperating bearing surface which is less hard than that of the ball. This combination of characteristics lead to maximal mutual bearing contact which minimizes local friction and abrasion. Both components are biologically inert. One component is hydrophilic. The ball is preferably formed from a ceramic, such as a metal or silicon oxide or carbide. The socket preferably has a noble metal alloy liner partially surrounding the ball. The socket further includes an insulator isolating the liner from the socket structural member, should the latter be formed from a different metal. The liner can be formed in complementary segments to avoid fracture or splitting. The liner is either mechanically entrapped by the socket structural member or is adhered thereto. The novel ball and socket joint minimizes wear and chemical, electrochemical, and mechanical deterioration in the environment of the human body.

BIOCOMPATIBLE MATERIAL.

Material biocompatible. El objeto de la presente invención es un nuevo material biocompatible destinado a ser usado en la fabricación de implantes, prótesis o dispositivos biomédicos, y que se fabrica utilizando como material de soporte cerámicas biomórficas de SiC con un recubrimiento de vidrio bioactivo depositado por ablación con láser pulsado. Biocompatible material The object of the present invention is a new biocompatible material intended for use in the manufacture of implants, prostheses or biomedical devices, and which is manufactured using SiC biomorphic ceramic support material with a bioactive glass coating deposited by laser ablation. pressed.

Embolus blood clot filter utilizable with a single delivery system or a single retrieval system in one of a femoral or jugular access

A blood filter delivery system for delivering a filter into a vein from either a femoral or jugular access. The preferred system includes an introducer and a push-rod with a spline member disposed along the push-rod and a pusher member disposed on a distal end. The spline member has a main body, first and second boss portions spaced apart along the longitudinal axis to provide a gap for retaining anchor members of the filter during delivery via the introducer. In an alternative embodiment, a preferred filter includes first and second filter structures diverging in opposite directions. A link is connected to portions of each of the first and second filter structures so that each filter structure can be independently collapsed into a generally cylindrical shape.

Embolus blood clot filter utilizable with a single delivery system or a single retrieval system in one of a femoral or jugular access

A blood filter delivery system for delivering a filter into a vein from either a femoral or jugular access. The preferred system includes an introducer and a push-rod with a spline member disposed along the push-rod and a pusher member disposed on a distal end. The spline member has a main body, first and second boss portions spaced apart along the longitudinal axis to provide a gap for retaining anchor members of the filter during delivery via the introducer. In an alternative embodiment, a preferred filter includes first and second filter structures diverging in opposite directions. A link is connected to portions of each of the first and second filter structures so that each filter structure can be independently collapsed into a generally cylindrical shape.

Knee system and method of making same

A femoral prosthesis may be formed as a femoral component incorporating a base material and an articulating material. In one exemplary embodiment, the base material is a metal and the articulating material is a polymer. Specifically, the base material provides strength and rigidity to the femoral component, while the articulating material contacts a tibial prosthesis or natural tibia during joint articulation. In one exemplary embodiment, the articulating material forms the articulating surface of one or more condyle portions of the femoral component.

Hybrid ceramic composite implants

A prosthesis for total or partial replacement of an articulating skeletal joint has two opposed bearing surfaces. The opposed bearing surfaces are made of a ceramic and a metal, respectively. The ceramic material is a silicon nitride or silicon carbide and the metal is preferably a nitrogen alloyed chromium stainless steel, know as Cronidur 30.

Ball and dual socket joint

A spinal implant is inserted between adjacent vertebrae to function as an disk prosthesis. The prosthesis has two plates fastened to adjacent vertebrae facing each other. The facing sides of the plates each have a depending skirt formed as concentric arcs of about 90 degrees. The skirts are either bowed or tapered in the axial direction. Depressions are centrally located between the arcs of the plates and a ball is universally movable in the depressions. A spring mechanism is centrally located in the plates to provide axial compression. The plates are oriented to each other with the concentric arcs of each interrupted skirt at 90 degrees and the protrusion is engaged in the depression. The plates are then rotated about 90 degrees and the opposed arcs of one plate interlock with the opposed arcs of the other plate to prevent separation in the axial direction.

A knee system and method of making same

A femoral prosthesis (10) may be formed as a femoral component (10) incorporating a base material (12) and an articulating material (14). In one exemplary embodiment, the base material is a metal and the articulating material is a polymer. Specifically, the base material provides strength and rigidity to the femoral component, while the articulating material contacts a tibial prosthesis (40) or natural tibia during joint articulation. In one exemplary embodiment, the articulating material forms the articulating surface (20) of one or more condyle portions (16, 18) of the femoral component.

Prosthetic hip joint having sintered polycrystalline diamond compact articulation surfaces

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a prosthetic hip joint having sintered polycrystalline diamond articulation.

Prosthetic joint having at least one superhard articulation surface

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a prosthetic joint having at least one superhard articulation surface.

Prosthetic hip joint having at least one sintered polycrystalline diamond compact articulation surface

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a prosthetic hip joint having polycrystalline diamond articulation surfaces and at least one sintered polycrystalline diamond articulation surface.

Diamond-surfaced cup for use in a prosthetic joint

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a diamond-surfaced cup for use in a prosthetic joint.

Component for a prosthetic joint having a diamond load bearing and articulation surface

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a component for a prosthetic joint having a diamond load bearing and articulation surface.

Prosthetic joint component having at least one sintered polycrystalline diamond compact articulation surface and substrate surface topographical features in said polycrystalline diamond compact

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a prosthetic joint component having at least one sintered polycrystalline diamond compact articulation surface and substrate surface topographical features in said polycrystalline diamond compact.

Prosthetic joint component having at least one solid polycrystalline diamond component

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a prosthetic joint component having at least one solid polycrystalline diamond component.

Use of gradient layers and stress modifiers to fabricate composite constructs

Use of gradient layers and stress modifiers in superhard constructs.

Use of CoCrMo to augment biocompatibility in polycrystalline diamond compacts

CoCrMo can be used to enhance biocompatibility of a sintered polycrystalline diamond compact.

Articulating diamond-surfaced spinal implants

Articulating diamond-surfaced spinal implants are disclosed. Materials which may be used to make the spinal implants and manufacturing and finishing techniques for making the implants are also disclosed.

Prosthetic knee joint having at least one diamond articulation surface

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including prosthetic knee joint having at least one diamond articulation surface.

Prosthetic hip joint having a polycrystalline diamond compact articulation surface and a counter bearing surface

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a prosthetic hip joint having a polycrystalline diamond compact articulation surface and a counter bearing surface.

Prosthetic hip joint having at least one sintered polycrystalline diamond compact articulation surface and substrate surface topographical features in said polycrystalline diamond compact

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a prosthetic hip joint having at least one sintered polycrystalline diamond compact articulation surface and substrate surface topographical features in said polycrystalline diamond compact.

Prosthetic joint having substrate surface topographical featurers and at least one diamond articulation surface

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a prosthetic joint having substrate surface topographical features and at least one diamond articulation surface.

Component for use in prosthetic hip, the component having a polycrystalline diamond articulation surface and a plurality of substrate layers

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a component for use in a prosthetic hip, the component having a polycrystalline diamond articulation surface and a plurality of substrate layers.

Diamond articulation surface for use in a prosthetic joint

Prosthetic joints, components for prosthetic joints, superhard bearing and articulation surfaces, diamond bearing and articulation surfaces, substrate surface topographical features, materials for making joints, bearing and articulation surfaces, and methods for manufacturing and finishing the same, and related information are disclosed, including a diamond articulation surface for use in a prosthetic joint

Bearings, races and components thereof having diamond and other superhard surfaces

Diamond bearings and bearing components are disclosed. Some embodiments of the bearings and bearing components include polycrystalline diamond compacts sintered under high pressure and high temperature to create a diamond table chemically and mechanically bonded to a substrate, the diamond table presenting a durable and thermally stable load bearing and articulation surface.

Use of a metal and Sn as a solvent material for the bulk crystallization and sintering of diamond to produce biocompatbile biomedical devices

A combination of a metal and Sn may be used as a solvent material for bulk crystallization and sintering of single crystal diamond to form a biocompatible and corrosion-resistant biomedical device.

Articulating diamond-surfaced spinal implants

Articulating diamond-surfaced spinal implants are disclosed. The implants use sintered polycrystalline articulation surfaces which are attached to spinal endplates and which are implanted to replace damaged spinal joints. The implants provide a long wearing and biocompatible articulation surface. Materials which may be used to make the spinal implants and manufacturing and finishing techniques for making the implants are also disclosed.

Use of Ti and Nb cemented in TiC in prosthetic joints

An improved composition of titanium sintered titanium carbide is provided. The composition provides an improved degree of strength and toughness and improved compatibility with medical imaging. The composition provides good compatibility with sintered polycrystalline diamond, achieving a good mechanical fit in terms of the combined compressibility and thermal expansion during the sintering process to minimize stress or cracking between the substrate and the diamond layer.

Prosthetic intervertebral disc

Dynamic surgical implant

A surgical implant device capable of conforming to a variety of surface topographies facilitates the growth and regeneration of site to which the device is applied. The device employs a plurality of elongate members supporting a column of discrete, rotatable elements in contact with each adjacent element. Anchor plates secure the respective ends of the elongate members, such anchor plates attachable to bone. The implant device provides and ordered array of individually rotatable elements to form a surface that permits bodily fluids to pass therethough.

Dynamic surgical implant

A surgical implant device capable of conforming to a variety of surface topographies facilitates the growth and regeneration of site to which the device is applied. The device employs a plurality of elongate members supporting a column of discrete, rotatable elements in contact with each adjacent element. Anchor plates secure the respective ends of the elongate members, such anchor plates attachable to bone. The implant device provides and ordered array of individually rotatable elements to form a surface that permits bodily fluids to pass therethough.

Ceramic condyle of artificial joint and condyle system

(57)【要約】 【課題】 低コストで製造でき、しかも小径でも高強度 を有する人工関節のセラミックス製骨頭球及び骨頭球シ ステムを提供すること。 【解決手段】 セラミック製骨頭球３は、一端が平面状 にカットされた略球形状をしており、その平面３ａから 中心に向かって径が小さくなる様なテーパ孔３ｂが形成 されている。このセラミック製骨頭球３のテーパ孔３ｂ の内周面を研磨する場合に、金属製ステム４のテーパ部 ４ａの外周面の面仕上げ度と同じ程度に研磨する。例え ば、金属製ステム４のテーパ部４ａの外周面の面仕上げ 度を、Ｒａ０．１〜０．６μｍの範囲とした場合には、 セラミック製骨頭球３のテーパ孔３ｂの内周面の面仕上 げ度も、Ｒａ０．１〜０．６μｍの範囲に設定してお く。

Parts for artificial joints with bearings and joint surfaces covered with diamonds

Electrically conducting nanocomposite materials for biomedical applications

Exposing osteoblasts on an electrically conducting nanocomposite, which may be an orthopaedic/dental implant, to electrical stimulation enhances osteoblast proliferation thereon. The electrically conducting nanoscale material includes an electrically conducting nanoscale material and a biocompatible polymer and/or a biocompatible ceramic; carbon nanotubes may be used as the electrically conducting nanoscale material.

Prosthetic hip joint having at least one sintered polycrystalline diamond compact articulation surface

A prosthetic hip joint (201) having a diamond load bearing and articulation surface (202). The joint may include a substrate to which a volume of diamond is bonded by sintering to form a sintered polycrystalline diamond compact.

Use of ti and nb cemented tic in prosthetic joints

An improved composition of titanium sintered titanium carbide is provided. The composition provides an improved degree of strength and toughness and improved compatibility with medical imaging. The composition provides good compatibility with sintered polycrystalline diamond, achieving a good mechanical fit in terms of the combined compressibility and thermal expansion during the sintering process to minimize stress or cracking between the substrate and the diamond layer.

A diamond articulation surface for use in a prosthetic joint

Components with bearing or wear-resistant surfaces

A component comprises a silicon carbide substrate ( 10 ), a layer ( 14 ) of CVD diamond on a surface ( 12 ) of the substrate, and a smooth surface ( 14 a ) on the CVD diamond layer ( 14 ) which is a non-planar bearing or wear-resistant surface for the component.

Prosthetic spinal disk

An intervertebral disk prosthesis for the total replacement of an intervertebral disk of the cervical or lumbar spine has an upper plate (2) having on its upper surface upwardly projecting formations (3) anchoring it to an upper vertebra and a concavity (8) on its lower inner surface surrounded by an edge. A lower plate (1) is provided with downwardly projecting formations (3) on its lower surface anchoring it to a lower vertebra and with a flat upper inner surface surrounding a guide groove (7) extending front - to -back with a first body stop on the back and/or a second body stop on the front. An intermediate sliding plate (13) between the upper and lower plate (2,1) has on its upper surface a convexity (4) that is identically or differently shaped to the concavity (8) on the lower inner surface of the upper plate (2), and on its lower surface a guide ridge (5) extending front - to -back surrounded by a flat surface. The guide ridge (5) of the intermediate sliding plate (13) has flanks and the guide groove (7) of the lower plate (1) houses the guide ridge (5) of the intermediate sliding plate (13) and permits the intermediate sliding plate (13) via its guide ridge (5) to slide front - to -back within the guide groove (7) as translational motion, while in the sliding area of the convexity (4) of the intermediate sliding plate (13) and of the concavity (8) of the upper plate (2) limited extension, flexion, lateral bending to right and left side, and axial rotation to both sides takes place.

Components with bearing or wear-resistant surfaces

A component comprises a silicon carbide substrate (10), a layer (14) of CVD diamond on a surface (12) of the substrate, and a smooth surface (14a) on the CVD diamond layer (14) which is a non-planar bearing or wear-resistant surface for the component.

Method for testing ceramic cups for hip joint endoprostheses

The invention concerns a method of testing ceramic cotyloid cavities (1) for hip joint endoprostheses, with a metal shank which is anchored in the femur and bears a pin, and with a ceramic spherical head which is placed thereon and is inserted into the ceramic cavity (1) which is in turn anchored directly or via an outer shell in the hip bone. According to the invention, in order to ensure that defective cavities (1) do not pass through quality control without being discovered and rejected, the interior of the cavity (1) is subjected to a load, all the volume elements of the cavity (1) which are under load in the physiological load state are loaded, and stresses are generated in the cavity or cavity insert which are higher by a specific factor than the stresses occurring in the physiological load state.

Bearings, races and components thereof having diamond and other superhard surfaces

Diamond bearings and bearing components are disclosed. Some embodiments of the bearings and bearing components include polycrystalline diamond compacts sintered under high pressure and high temperature to create a diamond table chemically and mechanically bonded to a substrate, the diamond table presenting a durable and thermally stable load bearing and articulation surface.

Method for producing an implant with a porous, ceramic surface layer

Verfahren zum Herstellen eines Implantats, welches eine poröse, keramische Oberflächenschicht (10) auf einem Substrat (1) aufweist, umfassend: a) einen Schritt des Aufbringens einer Dispersion auf das Substrat (1), die – mindestens einen Porenbildner, ausgewählt aus: Polyvinylacetat, Acrylglas, Cellulosefasern, Polypropylenfasern, Fettalkoholsufatzubereitungen oder eine Kombination davon, mit einer Partikelgröße zwischen 10 μm und 100 μm, – mindestens ein keramisches Material, – mindestens ein Dispersionsmittel – und mindestens einen anorganischer Binder umfasst, b) anschließend einen Schritt des Trocknens, zwecks Entzug des Dispersionsmittels, bei einer Temperatur zwischen 20°C und 70°C, und c) einen Sinterprozess, bei dem der Porenbildner in der keramischen Oberflächenschicht zersetzt oder verdampft wird. A method of making an implant having a porous ceramic surface layer (10) on a substrate (1), comprising: a) a step of applying a dispersion to the substrate (1), the At least one pore-forming agent selected from: Polyvinyl acetate, acrylic glass, cellulose fibers, polypropylene fibers, fatty alcohol addition preparations or a combination thereof, having a particle size between 10 μm and 100 μm, At least one ceramic material, - At least one dispersant - and at least one inorganic binder includes, b) then a step of drying, for removal of the dispersing agent, at a temperature between 20 ° C and 70 ° C, and c) a sintering process in which the pore-forming agent in the ceramic surface layer is decomposed or vaporized.

Femoral head prosthesis

The femur head prosthesis (9) comprises a spherical section (5) provided with a sunk bearing area (7) which rests on the face (8) of the femur stump, and is dimensioned within specified limits relating to relevant anatomic features of the natural femur head.

USE OF Ti AND Nb CEMENTED TiC IN PROSTHETIC JOINTS

Use of Ti and Nb cemented in TiC in prosthetic joints, such as prosthetic joint components made from sintered superhard materials.

Ceramic manufactures

A ceramic body can be made by a method that includes providing an initial green body of ceramic (520/521) ; and machining the initial green body to provide a machined green ceramic body (530). The machined green ceramic body (540) may be fired to provide a more finished ceramic body and/or further processed to provide a finally finished ceramic body (550). As illustrations of the many possible, the ceramic body can be a femoral component (100) for a posterior stabilized knee implant or component body (101) for an artificial rotation device containing knee prosthesis. Zircona ceramic bodies are advantageously provided.

METHOD FOR TESTING CERAMIC PANS FOR HIP JOINT OPROSTHESES

Manufacturing a component with a near spherical surface

A method of making a component (2) of an orthopaedic joint prosthesis, which has a bearing surface whose shape corresponds approximately to a part of a sphere and is symmetrical about its polar axis, involves use of a cutting tool (6) which has a circular cutting edge (12) and which can be rotated about an axis (8) which is perpendicular to the plane containing the said cutting edge (12). The method involves (a) rotating the component about its polar axis (4) and rotating the cutting tool (6) about its axis (8), with the cutting edge (12) of the cutting tool (6) in contact with the surface of the component (2); (b) moving the cutting tool (i) in a direction parallel to the polar axis (4) of the component (2) while leaving the angle between the axis of the cutting tool (6) and the polar axis of the component (2) unchanged, and (ii) along its axis (8); and (c) repeating step (a). The movements (i) and (ii) of the cutting tool (6) cause the radius of curvature of the bearing surface to change continuously and monotonically as the angle between the radius and the polar axis of the component changes, so that the shape of the bearing surface deviates from that of a true sphere in such a way that discontinuities in the shape of the bearing surface as a result of individual movements are minimised.

Use of ti and nb cemented tic in prosthetic joints

An improved composition of titanium sintered titanium carbide is provided. The composition provides an improved degree of strength and toughness and improved compatibility with medical imaging. The composition provides good compatibility with sintered polycrystalline diamond, achieving a good mechanical fit in terms of the combined compressibility and thermal expansion during the sintering process to minimize stress or cracking between the substrate and the diamond layer.

Porous, load-bearing, ceramic or metal implant

A method and apparatus for adjusting the modulus of elasticity, flexural strength, or porosity of metal and ceramic implants is disclosed in one embodiment of the invention as including a green tape comprising metal or ceramic particles, or a combination thereof, for incorporation into a solid implant structure (44). Apertures (32) are cut in selected regions of the green tape (34) in order to create a desired pore structure in the solid implant structure (44). This pore structure may be designed to give the solid structure (44) a desired modulus of elasticity, flexural strength, or porosity as well as to promote bone ingrowth. The green tape (34) may then be layered in an orientation that will provide the desired pore structure and the metal or ceramic particles and layers may be fused together to create the solid implant structure (44).

Artificial hip joint consisting of multilayer shell core composite structural components

本发明公开了一种多层壳芯复合结构件组成的人工髋关节，包括互相配合的人工髋臼和人工股骨头，其特征在于：所述人工髋臼具有多层壳芯复合结构，由陶瓷髋臼内衬、过渡层和多孔金属、多孔合金或多孔增韧陶瓷髋臼外壳构成；所述人工股骨头具有多层壳芯复合结构，由陶瓷球壳层、过渡层和增韧陶瓷内芯构成。本发明的人工髋臼内衬和人工股骨头球壳层具有高硬、耐蚀和耐磨性能；人工髋臼外壳层和股骨头内芯层具有高强韧、耐冲击性能；过渡层采用组成介于壳层、内芯层材料之间的梯度复合材料，具有增加壳层与内芯层间结合强度和降低壳层与内芯层间界面应力等功能，人工髋关节具有长寿命、高可靠和高性能等特点。

Ceramic manufactures

A ceramic body can be made by a method that includes providing an initial green body of ceramic (520/521); and machining the initial green body to provide a machined green ceramic body (530). The machined green ceramic body may be fired to provide a more finished ceramic body (540) and/or further processed to provide a finally finished ceramic body (550). As illustrations of the many possible, the ceramic body can be a femoral component (100) for a posterior stabilized knee implant or component body (101) for an artificial rotation device containing knee prosthesis. Zircona ceramic bodies are advantageously provided.

Femoral head prosthesis

Die Erfindung betrifft eine Femurkopfprothese mit einem auf einen natürlichen Kugelstumpf (4) in Richtung einer Halsachse A1 eines Femurknochens (14) aufsetzbaren Kugelkopf (5), wobei die Prothese einen Schaft umfasst, der sich nach distal verjüngt und mit seinem distalen Ende (13) von der Längsachse (3) der Prothese mit einem Krümmungswinkel von α > 15° weg gekrümmt ist, dadurch gekennzeichnet, dass der Schaft (6) derart bemessen ist, dass er im implantierten Zustand ausschließlich in der Spongiosa (16) zu liegen kommt. The invention relates to a femoral head prosthesis with a ball head (5) which can be placed on a natural ball stump (4) in the direction of a neck axis A1 of a femur bone (14), wherein the prosthesis comprises a shaft which tapers distally and with its distal end (13). is curved away from the longitudinal axis (3) of the prosthesis with a curvature angle of α> 15 °, characterized in that the shaft (6) is dimensioned such that it comes to lie exclusively in the cancellous bone (16) in the implanted state.

Bioceramic implants having bioactive substance

Articulating diamond-surfaced spinal implants

An articulating diamond-surfaced spinal implants having a first component (60074) with a concave surface end and a corresponding second element (60075 ) having a convex surface. The two components form a device with diamond to diamond contact at the articulation point.

Method for precipitating mono and multiple layers of organophosphoric and organophosphonic acids and the salts thereof in addition to use thereof

The invention relates to a method for precipitating mono or multiple layers of a mixture of organophosphoric acids of the general formula I (A) Y—B—OPO3H2   (IA) or of organophosphonic acids of the general formula I (B) Y—B—PO3H2   (IB) and the salts thereof, wherein Y and B are defined in the specification. According to the invention, precipitation occurs on substrate surfaces of pure or mixed oxides, nitrides or carbides of metals and semiconductors, in particular as surfaces of sensor platforms, implants and medical accessory devices. The invention also relates to the use thereof as part of coated sensor platforms, implants and medical accessory devices.

Artificial femoral ball head with multi-layer shell core composite structure

An artificial femoral ball head having a multilayer shell-core composite structure includes a spherical shell layer, a transition layer and an inner core. The inner core is made of a toughened ceramic, the spherical shell layer is made of a ceramic material, and the transition layer is made of a composite material comprising materials of the inner core and the spherical shell layer. The artificial femoral ball head is manufactured through sintering a green body of successively stacked layers of the spherical shell layer, the transition layer and the inner core, and the green body of successively stacked layers is obtained through a powder co-injection molding process. The spherical shell layer of the artificial femoral head has a high rigidness, corrosion-proof and wear-proof performance. The inner core of the artificial femoral head has a high toughness and shockresistant performance.

Prosthetic knee joint

A prosthetic knee joint (2010). hi some embodiments of the invention, the diamond articulation surface (295&2014) may be formed as a sintered polycrystalline diamond compact either as stand alone solid diamond or a diamond table on a substrate.

BIOKOMPATIBLE MATERIAL

Prosthetic joint

A prosthetic joint ball is receivable in a prosthetic joint socket to form a prosthetic joint. The ball is generally spherical and is mounted on a stem. The outer rounded surface of the ball is provided with a layer of CVD diamond, prepared by mechanical polishing to present a surface with an RA of 20 nm or less. The ball is formed of a silicon carbide or similar substrate and includes a rounded recess. Mounted in the recess is a metal insert formed of a cobalt-chromium alloy or titanium alloy. The metal insert includes a socket shaped and sized to receive, in use, the tapered end of the stem.

Component for prosthetic joint having diamond load bearing and articulation surface

一种具有金刚石承重和接合面的人工关节部件。该部件可以包括基体，其上通过烧结结合有金刚石，形成烧结的多晶金刚石紧密件。

Bioceramic implants having bioactive substance

A bioceramic endoprosthesis includes a reservoir or deposition of a bioactive substance, such as an angiogenic growth factor, that can provide a biological function, such as vascularization of the endoprosthesis. Such a bioceramic can be prepared by a low temperature direct rapid prototyping inkjet printing system and process. Such a direct inkjet printing process includes the following: applying a ceramic powder to a substrate; inkjet printing a binder solution onto the ceramic powder so as to form a bound ceramic; inkjet printing a bioactive substance solution onto the bound ceramic, wherein the bioactive substance is printed on the bound ceramic at the low temperature (e.g., room temperature or within +/- 10°C of 25°C); and repeating the process in order to form the bioceramic endoprosthesis.

An implant

The present invention relates to an implant made of a porous non-toxic material with a total open porosity larger than 5 percent by volume but not larger than 80 percent by volume within at least a portion of the implant. The implant is characterized in that: communicating pores with a pore size within the interval of 0.1-10 νm occupy 10-80 percent of the total pore volume in said at least one portion of the implant; pores with a pore size within the interval of 10-50 νm occupy not more than 5 % of the total pore volume in said at least one portion of the implant; and 5-40 % of at least one portion of the surface of the implant is covered by mainly evenly distributed pores having a pore size within the interval of 50-500 νm.

Electrically conducting nanocomposite materials for biomedical applications

Exposing osteoblasts on an electrically conducting nanocomposite, which may be an orthopaedic/dental implant, to electrical stimulation enhances osteoblast proliferation thereon. The electrically conducting nanoscale material includes an electrically conducting nanoscale material and a biocompatible polymer and/or a biocompatible ceramic; carbon nanotubes may be used as the electrically conducting nanoscale material.

Prosthetic spinal disk.

Una prótesis de disco intervertebral para el remplazo total de un disco intervertebral de la columna cervical o lumbar tiene una placa superior (2) que tiene sobre su superficie superior formaciones de proyección ascendente (3) que la anclan a una vértebra superior y una concavidad (8) sobre su superficie interna inferior rodeada por un borde. Una placa inferior (1) está provista de formaciones de proyección descendente (3) sobre su superficie inferior que la anclan a una vértebra inferior y con una superficie interna superior plana que rodea a un surco guía (7) que se extienden desde delante hacia atrás con un primer tope del cuerpo en la parte posterior y/o un segundo tope del cuerpo en la parte anterior. Una placa deslizante intermedia (13) entre las placas superior e inferior (2,1) tiene sobre su superficie superior una convexidad (4) que está conformada de forma idéntica o diferente a la concavidad (8) sobre la superficie interna inferior de la placa superior (2), y sobre su superficie inferior un reborde guía (5) que se extiende desde delante hacia atrás rodeado por una superficie plana. El reborde guía (5) de la placa deslizante intermedia (13) tiene flancos y el surco guía (7) de la placa inferior (1) aloja el reborde guía (5) de la placa deslizante intermedia (13) y permite que la placa deslizante intermedia (13) mediante su reborde guía (5) se deslice desde delante hacia atrás dentro del surco guía (7) en un movimiento de traslación, mientras que en el área deslizante de la convexidad (4) de la placa deslizante intermedia (13) y de la concavidad (8) de la placa superior (2) tiene lugar una limitación de la extensión, la flexión, el plegado lateral a derecha e izquierda y la rotación axial a ambos laterales.

Embolus Blood Clot Filter Utilizable With A Single Delivery System Or A Single Retrieval System In One of A Femoral or Jugular Access

A blood filter delivery system for delivering a filter into a vein from either a femoral or jugular access. The preferred system includes an introducer and a push-rod with a spline member disposed along the push-rod and a pusher member disposed on a distal end. The spline member has a main body, first and second boss portions spaced apart along the longitudinal axis to provide a gap for retaining anchor members of the filter during delivery via the introducer. In an alternative embodiment, a preferred filter includes first and second filter structures diverging in opposite directions. A link is connected to portions of each of the first and second filter structures so that each filter structure can be independently collapsed into a generally cylindrical shape.

Ceramic metal composite for orthopaedic implants

本发明涉及由陶瓷金属复合材料制成的整形外科植入物。所述复合材料(28、48、54)包括生物相容性的金属或金属合金的一个相和包括碳化物、氮化物和/或氧化物的陶瓷粒子实例的第二相。在一些实施方案中，所述植入物包含作为多层组合物部分的均质的陶瓷层(24)。在一些实施方案中，所述多层组合物包含均质金属层(32)。

Prosthetic knee joint

A prosthetic knee joint (2010). hi some embodiments of the invention, the diamond articulation surface (295&2014) may be formed as a sintered polycrystalline diamond compact either as stand alone solid diamond or a diamond table on a substrate.

Ceramic manufactures

A ceramic body can be made by a method that includes providing an initial green body of ceramic (520/521); and machining the initial green body to provide a machined green ceramic body (530). The machined green ceramic body may be fired to provide a more finished ceramic body (540) and/or further processed to provide a finally finished ceramic body (550). As illustrations of the many possible, the ceramic body can be a femoral component (100) for a posterior stabilized knee implant or component body (101) for an artificial rotation device containing knee prosthesis. Zircona ceramic bodies are advantageously provided.

Ceramic femur head for artificial joint

A ceramic femur head is nearly spherical and has a planar end surface. The femur head has a diametric, tapered hole which extends from the planar surface in a way as to taper toward an inner end thereof and in which a correspondingly tapered stem portion of a metallic stem is fitted. The inner peripheral surface of the tapered hole of the ceramic femur head is ground so as to have the same degree of surface finish as that of an outer peripheral surface of the tapered stem portion. For example, in case the outer peripheral surface of the tapered stem portion of the metallic stem is finished to have a surface roughness in the range from 0.1 to 0.6 µm Ra, the surface roughness of the inner peripheral surface of the tapered hole of the ceramic femur head is set to be in the range from 0.1 to 0.6 µm Ra.

Prosthetic hip joint having polycrystalline diamond articulation surfaces and at least one solid polycrystalline diamond compact

A prosthetic joint in which at least one bearing component is made from solid diamond.

Component for a prosthetic joint having a diamond load bearing and articulation surface

Method of testing ceramic cotyloid cavities for hip joint endoprostheses

The invention concerns a method of testing ceramic cotyloid cavities (1) for hip joint endoprostheses, with a metal shank which is anchored in the femur and bears a pin, and with a ceramic spherical head which is placed thereon and is inserted into the ceramic cavity (1) which is in turn anchored directly or via an outer shell in the hip bone. According to the invention, in order to ensure that defective cavities (1) do not pass through quality control without being discovered and rejected, the interior of the cavity (1) is subjected to a load, all the volume elements of the cavity (1) which are under load in the physiological load state are loaded, and stresses are generated in the cavity or cavity insert which are higher by a specific factor than the stresses occurring in the physiological load state.

Process for converting a metal carbide to carbon by etching in halogens

A process for the synthesis of carbon coatings on the surface of metal carbides, preferably SiC, by etching in a halogen-containing gaseous etchant, and optionally hydrogen gas, leading to (he formation of a carbon layer on the metal carbide. The reaction is performed in gas mixtures containing about 0% (trace) amounts to 100% halogen-containing gaseous etchant, e.g., Cl 2 , and about 0% to 99.9% H 2 (hydrogen gas) at temperatures from about 100° C. to about 4,000° C., preferably about 800° C. to about 1,200° C., over any time range, maintaining a pressure of preferably about one atmosphere, to about 100 atmospheres.

Non-spherical acetabular cup for total hip replacement

NON-SPHERICAL ACETABULAR CUP FOR TOTAL HIP REPLACEMENT The device is a prosthetic cup prosthesis providing a surface for articulation of the spherical head of a joint arthroplasty. The articulating surface of the cup is the surface of revolution of an arc intersecting the cup equatorial plane and its polar axis, having a center of curvature translated from the spherical center of the cup, rotated about the cup's polar axis.

Ceramic metal composite for orthopaedic implants

本发明涉及由陶瓷金属复合材料制成的整形外科植入物。所述复合材料(28、48、54)包括生物相容性的金属或金属合金的一个相和包括碳化物、氮化物和/或氧化物的陶瓷粒子实例的第二相。在一些实施方案中，所述植入物包含作为多层组合物部分的均质的陶瓷层(24)。在一些实施方案中，所述多层组合物包含均质金属层(32)。

Implant articular surface wear reduction system

An implant articular surface wear reduction system improves orthopedic prosthetic joint longevity by reducing frictional abrasive wear. The system includes a polymeric implant component and a rigid implant component. A hard wear layer is attached to the polymeric implant. The hard wear layer represents one opposing articular surface of a joint. The rigid implant component has a working surface and may represent another opposing articular surface in the joint. In one embodiment, the rigid implant component and the hard wear layer are ceramic. In another embodiment, a non-metallic wear layer is attached to the working surface. The non-metallic wear layer represents another opposing articular surface of the joint. In one embodiment, the polymeric implant component is a tibial implant and the rigid implant component is a femoral implant and the non-metallic wear layer is a polymer, such as polyethylene, self-reinforced polyphenylene, or PEEK.

Prosthesis

The prosthesis 2 comprises a first component 10 and a second component 14, the first component 10 being adapted to articulate with the second component 14 and being formed from a ceramic material, and the second component 14 being formed from a metallic material, wherein at least a portion of a surface 16 of the second component 14 comprises a ceramic material. The ceramic portion on the surface of the second component may comprise a coating applied by a vapour deposition technique or comprise a chemically modified surface where the modification comprises plasma diffusion or ion implantation.

Methods for manufacturing a diamond prosthetic joint component

Casting process

The freeze casting process for preparing a green shaped article such as a biocompatible bioceramic prosthesis or implant, comprises: a) providing a substrate at an initial predetermined spacing from one or more liquid dispensing outlets; b) writing a predetermined amount of a liquid formulation from at least one of the outlets onto the substrate, the formulation comprising: 8 to 99.99% by weight of a liquid sol comprising a liquid carrier and from 5 to 50% by weight, based on the weight of the carrier, of colloidally dispersed nanoparticles having a mean particle size in the range 0.25 to 100 nm; 92 to 0% by weight of a mineral powder having a mean particle size greater than 0.1 micron, and 0.01 to 10% by weight of at least one surfactant, freezing point depressant and/or rheology modifier; c) cooling the liquid formulation on the substrate so as to at least partially freeze the carrier on the cooled substrate; d) increasing the spacing between the one or more dispensing outlets and substrate to a further predetermined spacing; e) writing a further predetermined amount of the liquid formulation from at least one of the outlets either on to the substrate or on to deposit formed in steps b) and c) f) cooling the liquid formulation so as to at least partially freeze the liquid carrier on the substrate and/or on the deposit; and g) optionally repeating steps (d), (e) and (f) one or more times.

Method for precipitating mono and multiple layers of organophosphoric and organophosphonic acids and the salts thereof in addition to use thereof

The invention relates to a method for precipitating mono or multiple layers of a mixture of organophosphoric acids of the general formula I (A) Y—B—OPO 3 H 2   (IA) or of organophosphonic acids of the general formula I (B) Y—B—PO 3 H 2   (IB) and the salts thereof, wherein Y and B are defined in the specification. According to the invention, precipitation occurs on substrate surfaces of pure or mixed oxides, nitrides or carbides of metals and semiconductors, in particular as surfaces of sensor platforms, implants and medical accessory devices. The invention also relates to the use thereof as part of coated sensor platforms, implants and medical accessory devices.

Reinforced medical implants

Medical implants having a ceramic body reinforced with a plurality of metal wires. Methods of making the implant and methods of implanting the medical implant are also provided.

Wear resisting slide member

In the slide member, a recessed and projected pattern is formed in a slide surface of a mother member of the slide member allowed to slide in contact with a mating member, recessed portions of the recessed and projected pattern are filled with a lubricant, and the area ratio of the recessed portions is set in a range of 30 to 70% while the depth thereof is set for 10 μm or less. The slide member is able to secure the lubricating property, wear resisting property and seize-up resisting property of the slide surface thereof with the recessed and projected pattern formed therein for a long period.

COMPONENT FOR A PROSTHETIC JOINT

uso de tic cementado por nb e ti em articulações protéticas. uma composição aprimorada de carbeto de titânio sinterizado é fornecida. a composição fornece um grau melhorado de resistência e dureza e compatibilidade aprimorada com formação de imagem médica. a composição fornece boa compatibilidade com diamante policristalino, alcançando um bom encaixe mecânico em termos de compressibilidade combinada e expansão térmica durante o processo de sinterização para minimizar a tensão ou craqueamento entre o substrato e a camada de diamante. use of tic cemented by nb and ti in prosthetic joints. an improved composition of sintered titanium carbide is provided. the composition provides an improved degree of strength and toughness and enhanced compatibility with medical imaging. the composition provides good compatibility with polycrystalline diamond, achieving a good mechanical fit in terms of combined compressibility and thermal expansion during the sintering process to minimize the stress or cracking between the substrate and the diamond layer.

knee system and method of making same

A femoral prosthesis may be formed as a femoral component incorporating a base material and an articulating material. In one exemplary embodiment, the base material is a metal and the articulating material is a polymer. Specifically, the base material provides strength and rigidity to the femoral component, while the articulating material contacts a tibial prosthesis or natural tibia during joint articulation. In one exemplary embodiment, the articulating material forms the articulating surface of one or more condyle portions of the femoral component.

Verfahren zur abscheidung von mono- und mehrfachschichten von organophosphor- und - phosphonsäuren und deren salzen sowie deren verwendung

Verfahren zur herstellung einer orthopädischen gelenkprothesenkomponente mit einer annähernd sphärischen fläche

Verbundene, verschiebbare und zusammensteckbare drehbare komponenten

Gelenkige wirbelsäulenimplantate mit diamantoberfläche

Verfahren zum prüfen von keramischen pfannen für hüftgelenkendoprothesen