COLLAGEN GEL FOR BONDING POROUS COLLAGEN-BASED MATERIALS WITH NON-POROUS COLLAGEN-BASED MATERIALS

The invention discloses a process for fabricating a biomaterial, comprising: a) joining a porous collagen based-material with a non-porous collagen based-material by applying a controlled amount of a bonding layer of a gel comprising collagen to a bonding surface of the non-porous collagen based-material, and contacting a surface of the porous collagen based-material with the gel applied to the bonding surface to partially hydrate a section of the porous material at the interface between the materials; b) drying the gel to dry to bond the materials together; and c) cross-linking the collagens in the bonding layer. Also disclosed are biomaterials and implants produced using the fabrication process. 1. A process for fabricating a biomaterial , comprisinga) joining a porous collagen based-material with a non-porous collagen based-material by applying a controlled amount of a bonding layer of a gel comprising collagen to a bonding surface of the non-porous collagen based-material, and contacting a surface of the porous collagen based-material with the gel applied to the bonding surface to partially hydrate a section of the porous material at the interface between the materials;b) drying the gel to dry to bond the materials together; andc) cross-linking the collagens in the bonding layer.2. The process of wherein in drying step (b) the structure/shape of the materials is substantially retained without distortion.3. The process as claimed in wherein step (b) comprises air drying.45-. (canceled)6. The process as claimed in characterised in that the gel is acidic or alkaline prior to being applied to the bonding surface.7. The process as claimed in wherein the gel gelates at neutral pH.89-. (canceled)10. The process as claimed in wherein the gel further comprises a glycosaminoglycan selected from the group consisting of: chondroitin 4-sulfate claim 1 , chondroitin 6-sulfate claim 1 , keratan sulfate claim 1 , dermatan sulfate claim 1 , heparan sulfate claim 1 , and ...

Inserter for locating and impacting an acetabular cup

An inserter for locating and impacting an acetabular cup which has an inner bearing surface in a prepared acetabulum. The inserter has a handle carrying an anvil, an impaction head adapted to receive the cup and a retention system for attaching the cup to the inserter. The retention system extends between an actuator in the handle and the impaction head. The actuator is operable to free the retention system from the cup by impacting the anvil.

Femoral hip prosthesis

A prosthetic femoral component for location in a prepared socket in a femur which has been resected at a position on the proximal side of its neck (2) and which includes a tapered insert portion (4) and a proximal head portion (5), the proximal end (6) of said insert portion being adapted for location in said prepared socket and having a maximum dimension in a plane normal to the distal-proximal axis of the neck (2) which is larger than the minimum dimension of the neck (2) in a parallel plane.

Inserter for locating and impacting an acetabular cup

An inserter for locating and impacting an acetabular cup which has an inner bearing surface in a prepared acetabulum, comprising a handle carrying an anvil, an impaction head adapted to receive said cup and retention means for attaching said cup to the inserter extending between actuating means in the handle and the impaction head and in which said actuating means are operable to free the retention means from the cup by impacting the anvil.

Inserter for locating and impacting an acetabular cup

An inserter for locating and impacting an acetabular cup which has an inner bearing surface in a prepared acetabulum, comprising a handle carrying an anvil, an impaction head adapted to receive said cup and retention means for attaching said cup to the inserter extending between actuating means in the handle and the impaction head and in which said actuating means are operable to free the retention means from the cup by impacting the anvil.

Prosthetic acetabular cups

A prosthetic acetabular cup including a bearing surface layer made from a composite material which includes PEEK resin and at least 20 % to 40 % short carbon fibres, and a backing layer or layers to provide a barrier and/or porosity and/or roughness.

Femoral hip prosthesis

A prosthetic femoral component is located in a prepared socket in a femur which has been resected at a position on the proximal side of its neck and Includes a tapered insert and a proximal head portion. The proximal end of the insert portion is adapted for location in the prepared socket and has a maximum dimension in a plane normal to the distal-proximal axis of the neck which is larger than the minimum dimension of the neck in a parallel plane. The component takes advantage of the bone at the periphery of the socket which enables the insert to be accurately and firmly located in the bone. The presence of the bone at the outer edges of the socket helps to stabilize the component. Preferably the tapered insert portion is flared outwardly in the proximal direction. The tapered insert portion can be dimensioned to pass through the neck of the femur with which it is to be used or it can stop short of it.

Apparatus for preparing a prosthetic stem cavity in a femur

Apparatus for preparing a prosthetic stem cavity with inclined sides in the proximal end of a femur when performing proximal epiphyseal replacement technique surgery comprising drill guide support means which has a support part which has a first drill guide for drilling a proximal/distal opening in the proximal end of the bone and a second drill guide for drilling a lateral proximal/distal opening at an angle to said first opening adjacent the proximal end of the bone, a lower part for location on and attachment to the prepared proximal end of a femur and means for locating said drill guide support means at a predetermined angular position about a proximal distal axis on the femur.

Apparatus for indicating the bone thickness between a cavity in a bone and the bone surface

Cementless prosthetic bearing element

A cement less prosthetic bearing element comprises a backing which supports a bearing liner having a bearing surface, said backing being moulded from a rigid polymeric material and said bearing liner being made from an elastomeric polyurethane material and to which said backing is moulded with an outer surface which includes a number of raised engagement features provided in directions extending away from and/or towards the outer periphery of the outer surface.

Acetabular cup for a total hip prosthesis and total hip prosthesis embodying such cups

An acetabular cup for a total hip prosthesis including an outer backing (10) and an inner bearing component (11), characterised in that said backing (10) comprises a part-spherical main portion (16) and two independent arms (17,18) projecting therefrom and which are separated from each other. <IMAGE>

Fabrication process

The invention discloses a process for fabricating a biomaterial, comprising: a) joining a porous collagen based-material with a non-porous collagen based- material by applying a controlled amount of a bonding layer of a gel comprising collagen to a bonding surface of the non-porous collagen based-material, and contacting a surface of the porous collagen based-material with the gel applied to the bonding surface to partially hydrate a section of the porous material at the interface between the materials; b)drying the gel to dry to bond the materials together; and c)cross-linking the collagens in the bonding layer. Also disclosed are biomaterials and implants produced using the fabrication process.

Prosthetic acetabular cups

Prosthetic acetabular cups

A prosthetic acetabular cup including a bearing surface layer made from a composite material which includes PEEK resin and at least 20 % to 40 % short carbon fibres, and a backing layer or layers to provide a barrier and/or porosity and/or roughness.

Apparatus for indicating the bone thickness between a cavity in a bone and the bone surface

Apparatus for indicating the bone thickness between the predetermined distal end of a bone cavity located on a proximal/distal axis and the outer surface of the bone comprising a support member provided with means for location on the bone and having adjustable distance indicating means which can be adjusted in relation to said support means to contact the outer surface of the bone.

Collagen gel for bonding porous collagen- based materials with non- porous collagen- based materials

The invention discloses a process for fabricating a biomaterial, comprising: a) joining a porous collagen based-material with a non-porous collagen based- material by applying a controlled amount of a bonding layer of a gel comprising collagen to a bonding surface of the non-porous collagen based-material, and contacting a surface of the porous collagen based-material with the gel applied to the bonding surface to partially hydrate a section of the porous material at the interface between the materials; b)drying the gel to dry to bond the materials together; and c)cross-linking the collagens in the bonding layer. Also disclosed are biomaterials and implants produced using the fabrication process.

Femoral hip prosthesis

A prosthetic femoral component is located in a prepared socket in a femur which has been resected at a position on the proximal side of its neck and includes a tapered insert and a proximal head portion. The proximal end of the insert portion is adapted for location in the prepared socket and has a maximum dimension in a plane normal to the distal-proximal axis of the neck which is larger than the minimum dimension of the neck in a parallel plane. The component takes advantage of the bone at the periphery of the socket which enables the insert to be accurately and firmly located in the bone. The presence of the bone at the outer edges of the socket helps to stabilize the component. Preferably the tapered insert portion is flared outwardly in the proximal direction. The tapered insert portion can be dimensioned to pass through the neck of the femur with which it is to be used or it can stop short of it.

Inserter for locating and impacting an acetabular cup

Verfahren zur herstellung einer hüftgelenkpfanne für eine hüfttotalprothese

Vorrichtung zur herstellung einer knochenhohlraumprothese im oberschenkelknochen

Prothetische hüftpfannen

Collagen gel for bonding porous collagen-based materials with non-porous collagen-based materials

The invention discloses a process for fabricating a biomaterial, comprising: a) joining a porous collagen based-material with a non-porous collagen based-material by applying a controlled amount of a bonding layer of a gel comprising collagen to a bonding surface of the non-porous collagen based-material, and contacting a surface of the porous collagen based-material with the gel applied to the bonding surface to partially hydrate a section of the porous material at the interface between the materials; b) drying the gel to dry to bond the materials together; and c) cross-linking the collagens in the bonding layer. Also disclosed are biomaterials and implants produced using the fabrication process.