Subcutaneous Intramuscular Mounting for a Rigid Transcutaneous Implant

• US 20070260312A1
• Filed: 08/23/2005
• Published: 11/08/2007
• Est. Priority Date: 11/11/2004
• Status: Abandoned Application

• Current Assignee: Eska Implants GmbH & Co. KG.
• Original Assignee: Eska Implants GmbH & Co. KG.
• Inventors: Grundei, Hans
• Application Number:
  US10/594,657
• Publication Number:
  US 20070260312A1
• Time in Patent Office: Days
• US Class Current: 623/16.110
• CPC Class Codes: A61F 2/2814 Bone stump caps
• CPC Class Codes: A61F 2/30749 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2/30767 Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• CPC Class Codes: A61F 2/78 Means for protecting prostheses or for attaching them to the body, e.g. bandages, harnesses, straps, or stockings for the limb stump
• CPC Class Codes: A61F 2002/009 for hindering or preventing attachment of biological tissue
• CPC Class Codes: A61F 2002/30235 tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30339 Double cones, i.e. connecting element having two conical connections, one at each of its opposite ends
• CPC Class Codes: A61F 2002/30576 with extending fixation tabs
• CPC Class Codes: A61F 2002/30909 Nets
• CPC Class Codes: A61F 2002/3092 having an open-celled or open-pored structure
• CPC Class Codes: A61F 2002/30932 for retarding or preventing ingrowth of bone tissue
• CPC Class Codes: A61F 2002/4641 for disconnecting
• CPC Class Codes: A61F 2002/7887 for connecting limb exoprostheses to the stump bone
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2310/00113 Silver or Ag-based alloys
• CPC Class Codes: A61F 2310/00407 Coating made of titanium or of Ti-based alloys
• CPC Class Codes: A61F 2310/0052 Coating made of silver or Ag-based alloys
• CPC Class Codes: A61F 2310/00796 Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
• CPC Class Codes: A61L 27/18 obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: A61L 27/306 : Other specific inorganic materials not covered by A61L27/303 - A61L27/32
• CPC Class Codes: A61L 27/50 : Materials characterised by their function or physical properties , e.g. injectable or lubricating compositions, shape-memory materials, surface modified materials
• CPC Class Codes: C08L 75/04 : Polyurethanes

Abstract

A subcutaneous, intramuscular mounting for a rigid transcutaneous implant is disclosed, which may be fixed intracorporally in a bone stump, comprising a spacer (3) between the implant and an extracorporal coupling device (4) which may be coupled thereto, whereby the spacer (3) is embodied as a rigid bush (5) with a coupling element (6), sealed in the intracorporal direction, to which the extracorporal coupling device may be coupled. According to the invention, the bush (5) widens out significantly from the end (12) thereof facing the extracorporal direction to the end (13) thereof facing the intracorporal direction and comprises a smooth surface such that arthrogenic material can not grow into the surface thereof and as a result of a lack of frictional effects also causes hardly any inflammation.

Claims

1. A subcutaneous, intramuscular mounting for a rigid transcutaneous implant, which may be fixed intracorporally in a bone stump, comprising a spacer (3) between the implant and an extracorporal coupling device (4), which may be coupled thereto, whereby the spacer (3) is embodied as a rigid bush (5) with a coupling element (6), sealed in the intracorporal direction, to which the extracorporal coupling device (4) may be coupled, wherein,

the bush (5) widens out significantly from the end thereof facing the extracorporal direction (12) to the end thereof facing the intracorporal direction (13) and comprises a smooth surface.

2. A mounting according to claim 1, wherein the length of the base edge of the bush (5) at its extracorporally oriented end (12) as a ratio to the length at its intracorporally oriented end (13) as between 1:

1.2 and 1;

2.

3. A mounting according to claim 1, wherein the surface of the bush (5) has an antibacterial effect.

4. A mounting according to claim 3, wherein the surface of the bush (5) is plated with silver.

5. A mounting according to claim 3, wherein the surface of the bush (5) is plated with titanium.

6. A mounting according to claim 1 with an adaptation tube (7), which reaches into the inside of the bush (5), is seated in an interference fit, and is removable, to which adaptation tube the coupling device (4) can be coupled, which adaptation tube has an antibacterial effect, at least on its outer wall.

7. A mounting according to claim 6, wherein the adaptation tube (7) is constructed out of silver.

8. A mounting according to claim 6, wherein the adaptation tube (7) is constructed out of a material, whose outer wall is plated with silver.

9. A mounting according to claim 6, wherein the adaptation tube (7) is constructed out of a material, whose outer wall is coated with hydroxylapatite.

10. A mounting according to claim 6, wherein the adaptation tube (7) is constructed out of a material, whose outer wall is coated with calcium phosphate.

11. A mounting according to claim 6, wherein the adaptation tube (7) is constructed out of a material, whose outer wall is coated with titanium.

12. A mounting according to claim 6, wherein the adaptation tube (7) is constructed out of a material, whose outer wall is coated with plasma titanium spray.

13. A mounting according to claim 6, wherein the adaptation tube (7) is constructed out of polyurethane.

14. A mounting according to 6, wherein the adaptation tube (7) comprises such a length, that it is situated with its distal front edge (9) on a shoulder (10), which shoulder is formed on the coupling element (6) of the extracorporal coupling device (4), which is coupled thereto.