Adapter for an exoprosthetic standard element

• US 6,485,522 B1
• Filed: 12/15/2000
• Issued: 11/26/2002
• Est. Priority Date: 06/17/1998
• Status: Expired due to Term

• Current Assignee: Osseo-PL GmbH
• Original Assignee: Eska Implants GmbH & Co. KG.
• Inventors: Grundei, Hans
• Primary Examiner(s): McDermott, Corrine
• Assistant Examiner(s): STEWART, ALVIN J
• Application Number:
  US09/719,828
• Time in Patent Office: 711 Days
• Field of Search: 623/38, 623/27, 623/53, 623/32
• US Class Current: 623/38
• 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 2/60 Artificial legs or feet or parts thereof
• 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 2002/30332 Conically- or frustoconically-shaped protrusion and recess
• CPC Class Codes: A61F 2002/30433 using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30507 using a threaded locking member, e.g. a locking screw or a set screw
• CPC Class Codes: A61F 2002/3055 for adjusting length
• 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 2002/30878 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 2220/0025 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 2310/00011 Metals or alloys

Abstract

The invention relates an adapter for an exoprosthetic standard element such as an exoprosthetic knee joint. The adapter can be inserted with a proximal handle part into a tubular bone stump. The proximal handle part is at least partly covered with a tree-dimensional open-loop network structure and at its distal end has a coupling device for the standard element.

Claims

1. An adapter for an exoprosthetic standard part comprising:

a proximal stem part installed into a long bone stump;

an open-mesh three-dimensional space-network structure covering, at least partially, said stem part;

a coupling device provided on a distal end of said stem part for coupling with said exoprosthetic standard part;

wherein said coupling device includes a cone, an adapter sheath having a conical clamping seat, and a coupling part for connecting to said exoprosthetic standard part, said cone being seated in said conical clamping seat.

2. An adapter as in claim 1, wherein said conical clamping seat is secured to said cone by a tension screw which is screwed through said adapter sheath into a threaded hole formed in said cone.

3. An adapter as in claim 1, wherein said stem part includes a surrounding flange located at a front edge of said long-bone stump.

4. An adapter as in claim 1, further comprising an intermediate piece wherein said intermediate piece is connected to said stem part in the direction of said coupling device.

5. An adapter as in claim 4, further comprising a sealing part located on said intermediate piece at a position where said intermediate piece extends out of a body.

6. An adapter as in claim 4 wherein said intermediate piece can be adjusted in length.

7. An adapter as in claim 4 wherein said intermediate piece is of a metal mass.