Subcutaneous, intra-muscular coupling for a rigid transcutaneous implant

• US 6,843,808 B2
• Filed: 05/18/2001
• Issued: 01/18/2005
• Est. Priority Date: 08/15/2000
• Status: Expired due to Term

• Current Assignee: Osseo-PL GmbH
• Original Assignee: Eska Implants GmbH & Co. KG.
• Inventors: Grundei, Hans
• Primary Examiner(s): STEWART, ALVIN J
• Application Number:
  US10/332,736
• Publication Number:
  US 20030109878A1
• Time in Patent Office: 1,341 Days
• Field of Search: 623 27- 32, 623/38, 623/53
• US Class Current: 623/32
• CPC Class Codes: A61F 2/2814 Bone stump caps
• CPC Class Codes: A61F 2/30742 Bellows or hose-like seals; Sealing membranes A61B17/8808 takes precedence; sealing membranes for retaining bone substitute A61F2/2846
• CPC Class Codes: A61F 2/30749 Fixation appliances for connecting prostheses to the body
• 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 2002/30014 differing in elasticity, stiffness or compressibility
• 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 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30448 using adhesives
• CPC Class Codes: A61F 2002/30563 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 2002/30593 hollow
• 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 2002/3092 having an open-celled or open-pored structure
• 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 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 2250/0018 : differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2310/00407 : Coating made of titanium or of Ti-based alloys

Abstract

A subcutaneous, intramuscular bearing for a rigid transcutaneous implant that can be anchored intracorporeally in a bone stump and that has an extracorporeal coupling device for a standard exoprosthetic component that includes a flexible material, and that has a socket that distally surrounds the implant in a firm manner, the bearing including: an enveloping sheath arranged intracorporeally in the form of a flexible pleated bellows, which is proximally connected to the socket via a collar that is formed thereon in a sealing manner, in such a way that a hollow space with a minimum breadth s remains free between the inner walling of the pleated bellows and the outer walling of the socket; a flexible grid network is arranged distally at the pleated bellows; and an additional grid network adjoins the flexible grid network on the distal side, wherein the additional grid network has a higher modulus of elasticity in comparison to that of the flexible grid network.

Claims

1. Subcutaneous, intramuscular bearing for a rigid transcutaneous implant that can be anchored intracorporeally in a bone stump and that has an extracorporeal coupling device for a standard exoprosthetic component that includes a flexible material, and that has a socket that distally surrounds the implant in a firm manner, the bearing comprising:

an enveloping sheath arranged intracorporeally in the form of a flexible pleated bellows, which is proximally connected to the socket via a collar that is formed thereon in a sealing manner, in such a way that a hollow space with a minimum breadth s remains free between an inner walling of the pleated bellows and an outer walling of the socket;

a flexible grid network is arranged distally at the pleated bellows; and

an additional grid network adjoins the flexible grid network on the distal side,

wherein the additional grid network has a higher modulus of elasticity in comparison to that of the flexible grid network.

2. Bearing in accordance with claim 1, wherein the minimum breadth s amounts to 1 mm.

3. Bearing in accordance with claim 1, further comprising a silicone.

4. Bearing in accordance with claim 1, wherein the flexible grid network comprises a silicone.

5. Bearing in accordance with claim 1, wherein the additional grid network comprises a metallic woven or matted wool.

6. Bearing in accordance with claim 5, wherein the metallic wool is formed from titanium fibers.