Subcutaneous, intramuscular support for a rigid transcutaneous implant

• US 20040068324A1
• Filed: 10/02/2003
• Published: 04/08/2004
• Est. Priority Date: 10/08/2002
• Status: Active Grant

• Current Assignee: Osseo-PL GmbH
• Original Assignee: Eska Implants GmbH & Co. KG.
• Inventors: Grundei, Hans
• Granted Patent: US 6,869,450 B2
• Time in Patent Office: Days
• US Class Current: 623/32
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• 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 2/76 Means for assembling, fitting or testing prostheses, e.g. for measuring or balancing, e.g. alignment means
• 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 2002/2825 Femur
• CPC Class Codes: A61F 2002/2832 Femoral neck
• CPC Class Codes: A61F 2002/3007 Coating or prosthesis-covering structure made of elastic material, e.g. of elastomer
• CPC Class Codes: A61F 2002/30329 Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• CPC Class Codes: A61F 2002/30331 made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2002/30332 Conically- or frustoconically-shaped protrusion and recess
• 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 2002/30354 Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
• CPC Class Codes: A61F 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30448 using adhesives
• CPC Class Codes: A61F 2002/30451 soldered or brazed or welded
• CPC Class Codes: A61F 2002/30474 using an intermediate sleeve interposed between both prosthetic parts to be coupled
• CPC Class Codes: A61F 2002/30507 using a threaded locking member, e.g. a locking screw or a set screw
• CPC Class Codes: A61F 2002/30563 having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
• CPC Class Codes: A61F 2002/30574 : with an integral complete or partial collar or flange
• CPC Class Codes: A61F 2002/30589 : Sealing means
• CPC Class Codes: A61F 2002/30604 : modular
• CPC Class Codes: A61F 2002/30607 : Kits of prosthetic parts to be assembled in various combinations for forming different prostheses
• CPC Class Codes: A61F 2002/30616 : Sets comprising a plurality of prosthetic parts of different sizes or orientations
• CPC Class Codes: A61F 2002/30617 : Visible markings for adjusting, locating or measuring
• CPC Class Codes: A61F 2002/30787 : inclined obliquely with respect to each other
• CPC Class Codes: A61F 2002/30878 : with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30909 : Nets
• CPC Class Codes: A61F 2002/7887 : for connecting limb exoprostheses to the stump bone
• CPC Class Codes: A61F 2220/0025 : Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
• 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 2220/0041 : using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2220/005 : using adhesives
• CPC Class Codes: A61F 2220/0058 : soldered or brazed or welded
• CPC Class Codes: A61F 2250/0097 : Visible markings, e.g. indicia
• CPC Class Codes: A61F 2310/00407 : Coating made of titanium or of Ti-based alloys

Abstract

A subcutaneous, intramuscular support (1) is provided for a rigid transcutaneous implant (2), which can be anchored intracorporeally in a bone stump. The support has an intermediate piece (3) between the part of the implant (2) to be intracorporeally anchored and an extracorporeal coupling device (4) that can be coupled to it. A rigid bushing (5) is firmly connected with the intermediate piece (3), such that an annulus (6) is formed between the wall of the bushing (5) and the intermediate piece (3), the annulus being closed in the intracorporeal direction, and into which annulus the extracorporeal coupling device can be inserted. A tube (7) made of a flexible material is applied to the outer wall of the bushing (5), and a metallic wool (8) is applied to the flexible tube (7).

Claims

1. A subcutaneous, intramuscular support (1) for a rigid transcutaneous implant (2) to be intracorporeally anchored in a bone stump, comprising:

an intermediate piece (3) to be mounted between a part of the implant (2) to be intracorporeally anchored and an extracorporeal coupling device (4) couplable thereto;

a rigid bushing (5) firmly connected with the intermediate piece (3), such that an annulus (6) is formed between a wall of the bushing (5) and the intermediate piece (3), the annulus being closed in an intracorporeal direction, and the extracorporeal coupling device (4) being insertable into the annulus;

a tube (7) comprising flexible material applied to an outer wall of the bushing (5); and

a metallic wool (8) applied to the flexible tube (7).

2. The support according to claim 1, wherein the bushing (5) is firmly connected to the intermediate piece (3) by shrinking the bushing onto the intermediate piece.

3. The support according to claim 1, wherein the bushing (5) is welded to the intermediate piece (3).

4. The support according to claim 1, wherein the bushing (5) is constructed in one piece with the intermediate piece (3).

5. The support according to claim 1, wherein the flexible tube (7) comprises silicone.

6. The support according to claim 1, wherein the metallic wool (8) comprises titanium fibers.

7. The support according to claim 1, wherein the intermediate piece (3) is a double cone with a cylindrical center section (9), and the bushing (5) is connected to the center section.

8. The support according to claim 1, wherein on the flexible tube (7), a multi-layered metallic web, fabric, mesh and/or a multi-layered metallic wool (8) is applied, which extends around the intermediate piece (3) in a form of a cap.

9. The support according to claim 8, wherein the flexible tube (7) extends from the bushing (5) in a form of a cap.

10. The support according to claim 9, wherein the flexible tube (7) is covered on both sides by a multi-layered metallic web, fabric, mesh and/or a multi-layered metallic wool (8).

11. The support according to claim 8, wherein the multi-layered metallic web, fabric, mesh and/or the multi-layered metallic wool (8) has radially running lines (9) along which the multiple layers are welded together.

12. The support according to claim 1, further comprising at least two slotted, bent clamping rings (23, 24), which during an operation can be slid longitudinally onto the bushing (5) with little play, such that the at least two clamping rings partially grasp between a pair of adjacent rings one layer (22, 25) of a metallic web, fabric, mesh and/or attached metallic wool, wherein the layer extends around the intermediate piece (3) in a form of a cap.

13. The support according to claim 12, comprising more than two clamping rings (23,24), wherein a layer is arranged between each pair of adjacent clamping rings.

14. The support according to claim 12, further comprising a slotted, bent locking ring (26), wherein the locking ring fits against an inner wall of the annulus (6) with very little play and locks the layer (25) most outwardly situated against the clamping ring (24) most outwardly situated.