Trochanteric basket

• US 4,473,068 A
• Filed: 01/18/1982
• Issued: 09/25/1984
• Est. Priority Date: 01/18/1982
• Status: Expired due to Term

• Current Assignee: Richards Medical Company
• Original Assignee: Richards Medical Company
• Inventors: Oh, Indong
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): SHEDD, CHARLES W
• Application Number:
  US06/340,025
• Time in Patent Office: 981 Days
• Field of Search: 128/92 D, 128/92 R, 128/92 C, 128/92 B
• US Class Current: 606/285
• CPC Class Codes: A61B 17/74 Devices for the head or neck or trochanter of the femur trochanteric devices connected to the proximal part of an endoprosthetic femoral shaft A61F2/30739; endoprosthetic internal fixation devices for the head or neck of the femur A61F2/3601
• CPC Class Codes: A61B 17/82 for bone cerclage apparatus for manipulating wires or straps A61B17/8861; wires, bands or straps other than cerclage A61B17/842
• CPC Class Codes: A61B 17/842 Flexible wires, bands or straps A61B17/72, A61B17/82, A61B17/86 take precedence
• CPC Class Codes: A61B 90/00 Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges protective face masks A41D13/11; surgeon's or patient's gowns or dresses A41D13/12; devices for carrying-off, for treatment of, or for carrying-over, body liquids A61M1/00
• CPC Class Codes: A61F 2/30734 Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect
• CPC Class Codes: A61F 2/30739 Devices connected to the proximal part of an endoprosthetic femoral shaft for reinforcing or replacing the trochanters, e.g. the greater trochanter proximal parts of endoprosthetic femoral shafts A61F2/367; non-prosthetic trochanteric devices A61B17/74
• CPC Class Codes: A61F 2/367 Proximal or metaphyseal parts of shafts trochanteric devices connected to said proximal parts A61F2/30739
• CPC Class Codes: A61F 2002/30785 parallel
• CPC Class Codes: A61F 2002/30841 Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
• CPC Class Codes: A61F 2002/30892 parallel
• CPC Class Codes: Y10S 606/902 Cortical plate specifically adapted for a particular bone

Abstract

An implant for use in retention of the greater trochanter comprising a circumferentially extending band and first and second bands extending between opposite regions of the circumferentially extending band. One or more prongs are coupled to the bands. The implant cooperates with a wire for tying the implant in position over the greater trochanter. The bands of the implant are deformable so that they can be conformed to approximate the contour of the greater trochanter. The prongs are adapted to penetrate the abductor muscle-tendon attached to the greater trochanter to help retain the greater trochanter in position.

Claims

1. An implant for use in retention of the greater trochanter, said implant comprising:

a deformable circumferentially extending band which completely circumscribes a region;

a first deformable band extending between regions of the circumferentially extending band and being joined to the circumferentially extending band at first and second locations, said circumferentially extending band circumscribing at least a length of said first band, said bands being adapted to engage the greater trochanter and to be deformed to approximate the contour of the greater trochanter;

means attached to at least one of said bands for cooperating with at least one elongated element to facilitate tying of the implant in position over the greater trochanter; and

means attached to one of said bands for penetrating an abductor muscle-tendon.

2. An implant as defined in claim 1 wherein at least a portion of said cooperating means is adjacent one end of said first band.

3. An implant as defined in claim 1 wherein the circumferentially extending band is elongated and has side sections which are inclined toward each other as they extend in the direction of elongation.

4. An implant for use in retention of the greater trochanter, said implant comprising:

first and second deformable bands, each of said bands having opposite ends, said bands extending in different directions and being joined together at a first location intermediate the ends of said first and second bands;

a deformable circumferentially extending band extending circumferentially completely around the first location and a region of the first and second bands and attached to said first and second bands radially outwardly of said first location, said bands being generally in the same plane and adapted to overlie the greater trochanter and to be deformed to approximate the contour of the greater trochanter;

means attached to at least one of said bands for cooperating with at least one elongated element to facilitate tying of the implant in position over the greater trochanter; and

means attached to one of said bands for penetrating an abductor muscle-tendon.

5. An implant as defined in claim 4 wherein said first and second bands extend generally transverse to each other and said implant includes a third band joined to said first band at a second location and extending generally transverse to said first band and said circumferentially extending band circumscribes and joins regions of said first, second, and third bands.

6. An implant as defined in claim 4 wherein said first and second bands extend generally transverse to each other and said implant includes a third band joined to said first band at a second location intermediate the ends of said first and third bands and extending generally transverse to said first band, said penetrating means includes first and second rigid prongs, means for attaching the first and second prongs to the second and third bands with the prongs being generally perpendicular to said plane, respectively, said prongs being adapted to penetrate a muscle-tendon adjacent the greater trochanter and said circumferentially extending band completely circumscribing said second location and major lengths of said first, second and third bands.

7. An implant as defined in claim 6 wherein said second and third bands are generally parallel and are longer than the first band, said first and second locations are farther from said prongs than from the other ends of the second and third bands.

8. An implant as defined in claim 6 wherein said circumferentially extending band is joined to the end portions of the first, second, and third bands and said penetrating means includes means forming tunnels adjacent said prongs.

9. An implant for use in retention of the greater trochanter, said implant comprising:

first and second deformable bands, each of said bands having opposite ends, said bands extending in different directions and being joined together at a first location, said bands being adapted to overlie the greater trochanter and to be deformed to approximate the contour of the greater trochanter;

means attached to said second band for penetrating a muscle-tendon adjacent the greater trochanter; and

means attached to said bands for cooperating with an elongated element to facilitate tying of the implant in position over the greater trochanter.

10. An implant as defined in claim 9 wherein said bands extend generally transverse to each other and said implant includes a third band joined to one of said bands at a second location and extending generally transverse to said one band, and means attached to said third band for cooperating with an elongated element for tying the implant in position over the greater trochanter.

11. An implant as defined in claim 10 including means attached to said third band for penetrating a muscle adjacent the greater trochanter.

12. An implant as defined in claim 9 including a deformable circumferentially extending band extending circumferentially and attached to said first and second bands radially outwardly of said first location.

13. An implant as defined in claim 9 wherein said second band is longer than said first band and said first location is spaced from the mid-point of said second band whereby said first location is farther from said penetrating means than from the other end of said second band.

14. An implant as defined in claim 9 wherein said penetrating means includes a prong.

15. An implant as defined in claim 9 wherein said first location is intermediate the ends of said first and second bands.

16. An implant as defined in claim 9 wherein said penetrating means includes a relatively rigid prong having a relatively broad surface for engaging the muscle-tendon and said cooperating means includes means defining a tunnel extending along a region of the prong.

17. An implant comprising:

a circumferential band generally in the form of a rectangle, but having rounded corners, said band having a longitudinal axis and a transverse axis;

a pair of substantially parallel bands extending longitudinally and intersecting at their ends with said circumferential band;

a transverse band offset from the middle of said rectangle toward one end of the rectangle intersecting each of said parallel bands and terminating at each of its ends in said circumferential band;

means adjacent the intersections of said transverse and circumferential bands for receiving an elongated element for affixing the implant in position;

hollow prong means extending generally perpendicular from the other end of the rectangle adjacent the intersections of said parallel and circumferential bands for penetrating a muscle and for receiving an elongated element for further affixing of the implant; and

at least said bands being unitarily formed from a deformable material such that they are shapable so as to generally conform to a surface against which the implant is placed.