HIP FIXATION DEVICE

• US 3,842,825 A
• Filed: 11/12/1973
• Issued: 10/22/1974
• Est. Priority Date: 11/12/1973
• Status: Expired due to Term

• Current Assignee: Richard F. Wagner
• Original Assignee: Richard F. Wagner
• Inventors: Wagner, Richard F.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Yasko, J.
• Application Number:
  US05/414,711
• Time in Patent Office: 344 Days
• Field of Search: 128/92BB,92B,92R,92BC,92CA,92C,92D,83
• US Class Current: 606/66
• CPC Class Codes: A61B 17/746 the longitudinal elements coupled to a plate opposite the femoral head
• CPC Class Codes: A61B 17/8863 Apparatus for shaping or cutting osteosynthesis equipment by medical personnel

Abstract

A hip fixation device for reconstructing fractures of the upper end of the femur comprising a spoon-shaped plate having a handle portion which extends laterally along the top of the femur shaft and a bowl portion which conforms to the lower portion of the greater trochanter. A plurality of bores transverse the bowl portion for receiving hip screws adapted to be driven into the upper end of the femur generally parallel to the long axis of the femur head and a flat headed boss surrounds the outer opening of each bore against which the undersides of the screw heads seat. A cover plate is attached tightly over the outer side of the bowl portion against the screw heads by means of bolts. It has a raised section on its inner side which fits down between the screw heads to keep them from rotating. A pair of bending tools for bending the spoon shaped plate so that it conforms to the femur contour and a driving tool for driving the hip screws into the femur are also disclosed.

Claims

1. A hip fixation device comprising:

a. a spoon-shaped plate comprising an elongated handle portion adapted to extend laterally along and conform to the upper portion of the shaft of a femur and a bowl portion adapted to conform to the lower portion of the greater trochanter of said femur;

b. a plurality of spaced bores transversing the bowl portion said bores being adapted to receive hip screws therethrough in substantially parallel relationship to each other;

c. a flat plate surface surrounding the outer opening of each of the bores, against which the heads of the hip screws are adapted to seat;

d. a cover plate adapted to be attached over the outer side of the bowl portion and against the heads of said hip screws;

e. a raised portion on the inner side of the cover plate adapted to fit between the heads of said hip screws and prevent rotation thereof; and

f. means for attaching the cover plate over the outer side of the bowl portion whereby pressure is exerted against the heads of the screws to keep them from loosening from the femur.

2. The hip fixation device according to claim 1 in which the handle portion has a plurality of bores transversing it for receiving bone screws therethrough.

3. The hip fixation device of claim 1 including:

g. a boss surrounding the outer opening of each of the bores, against which the heads of the hip screws are adapted to seat.

4. The hip fixation device according to claim 1 in which there are four of said bores in a square configuration sized to the dimensions of the neck of said femur.

5. The hip fixation device according to claim 1 wherein said raised portion is a vertical, generally rectangular bar.

6. The hip fixation device according to claim 1 wherein said means for attaching thE cover plate over the outer side of the bowl portion includes:

g. a pair of bolts adapted to be received through said bowl portion and cover plate; and

h. a pair of nuts adapted to be screw threadedly received on the shanks of said bolts.

7. The hip fixation device according to claim 3 in which said bores are ovular and the tops of the bosses are planar whereby the substantially parallel relationship of the hip screws is permitted and maintained.

8. A hip fixation device comprising:

a. a spoon-shaped plate comprising an elongated handle portion adapted to extend laterally along and conform to the upper portion of the shaft of a femur and a bowl portion adapted to conform to the lower portion of the greater trochanter of the femur;

b. four ovular bores transversing said bowl portion said bores being in a square configuration sized to the dimensions of the neck of said femur and being adapted to receive hip screws therethrough in substantially parallel relationship to each other;

c. a boss surrounding the outer opening of each of said bores, the tops of said bosses being flat and planar and against which the heads of the hip screws are adapted to seat whereby said substantially parallel relationship is maintained;

d. a cover plate adapted to be attached over the outer side of the bowl portion and against the heads of said hip screws;

e. a vertical bar on the inner side of said cover plate adapted to fit between the heads of the hip screws and prevent rotation thereof;

f. a plurality of bolts adapted to be received through said bowl portion and cover plate; and

g. a plurality of nuts adapted to be screw threadedly received on the shanks of said bolts whereby said cover plate is secured to said bowl portion and pressure is exerted against the heads of said hip screws to keep them from loosening from the femur.

9. The hip fixation device according to claim 8 in which the handle portion has a plurality of bores transversing it for receiving bone screws therethrough.