Orthopedic pin placement guide

• US 4,719,907 A
• Filed: 03/18/1987
• Issued: 01/19/1988
• Est. Priority Date: 03/18/1987
• Status: Expired due to Fees

• Current Assignee: Stryker Technologies Corporation
• Original Assignee: Orthospec Incorporated
• Inventors: Zickel, Robert E., Banko, Victor F.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): SHEDD, CHARLES W
• Application Number:
  US07/027,301
• Time in Patent Office: 307 Days
• Field of Search: 128/92 VD, 128/92 V, 128/92 YK, 128/92 YV, 128/92 R
• US Class Current: 606/96
• CPC Class Codes: A61B 17/1721 for applying pins along or parallel to the axis of the femoral neck
• CPC Class Codes: A61B 2090/037 with a frangible part, e.g. by reduced diameter

Abstract

A guide device for the placement of a bone screws or pin in the orthopedic treatment of bone fractures is disclosed. The guide device is constructed of a body having one or more tunnels for guiding therethrough an orthopedic pin for placement in the orthopedic treatment of a bone fracture. The body includes at least one frangible portion for separating the body from about the pin such that the body is removable while the pin remains in secured place within the bone.

Claims

1. Guide device for the placement of a pin in the orthopedic treatment of bone fractures, said device comprising a body having a first opening for guiding therethrough a pin for placement in the orthopedic treatment of a bone fracture, said body having a frangible portion for separating said body from about said pin, whereby said body is removable while said pin remains in place within said bone.

2. The device of claim 1 wherein said first opening is a pin placement tunnel for guiding said pin into place during orthopedic treatment of a bone fracture.

3. The guide device of claim 1 wherein said first opening intersects said frangible portion.

4. The guide device of claim 3 further including a trough-like depression formed within said body and arranged in communication with said first opening.

5. The guide device of claim 3 further including a second opening, said second opening arranged parallel to said first opening for guiding therethrough a pin for placement in the orthopedic treatment of a bone.

6. The guide device of claim 5 wherein said frangible portion intersects said first opening and said second opening.

7. The guide device of claim 3 wherein said first opening is angularly arranged with respect to a longitudinal axis of said body.

8. The guide device of claim 7 wherein said frangible portion is at an angle corresponding to the angular arrangement of said first opening.

9. The guide device of claim 7 wherein the angular arrangement of said first opening is approximately between 125°

-150°

when measured from the underside of a human greater trochanter in the treatment of bone fractures of a human femoral neck.

10. The guide device of claim 9 wherein the angular arrangement is between 130°

-140°

.

11. The guide device of claim 9 wherein said body has a rounded edge conforming to the underside of the greater human trochanter.

12. The guide device of claim 3 wherein said body is sufficiently transparent to permit visualization of said pin as said pin passes through said first opening.

13. The guide device of claim 3 wherein said body is made of acrylic.

14. The guide device of claim 3 wherein said frangible portion is a hollowed out region having securing means bridging said hollowed out region for holding said body together.

15. The device of claim 3 wherein said body includes a flat region having a trough-like depression extending therefrom.

16. The device of claim 15 wherein said trough-like depression is a circular arc.

17. The device of claim 3 further comprising radioopaque markers.

18. The device of claim 3 wherein said first opening is arranged perpendicular to a longitudinal axis of said body.

19. The guide device of claim 18 wherein said body further includes a beveled edge, said beveled edge conforming to the curvature of the underside of a human greater trochanter.

20. Guide device for the placement of a pin in the orthopedic treatment of bone fractures said device comprising:

a body having a plurality of openings for guiding therethrough pins for placement in the orthopedic treatment of a bone fracture;

at least one frangible portion within said body for separating said body from about said pin, said frangible portion intersecting said plurality of openings; and

a trough-like depression within said body, said frangible portion and said plurality of openings located at least partially within said trough-like depression.