ORTHOPEDIC DRILL GUIDE APPARATUS

• US 3,704,707 A
• Filed: 04/06/1971
• Issued: 12/05/1972
• Est. Priority Date: 04/06/1971
• Status: Expired due to Term

• Current Assignee: William X. Halloran
• Original Assignee: William X. Halloran
• Inventors: Halloran, William X.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Yasko, J.
• Application Number:
  US05/131,645
• Time in Patent Office: 609 Days
• Field of Search: 128/92EB,92R,92BC,92B,92EC
• US Class Current: 606/97
• CPC Class Codes: A61B 17/1703 using imaging means, e.g. by X-rays
• CPC Class Codes: A61B 17/1721 for applying pins along or parallel to the axis of the femoral neck

Abstract

Orthopedic drill guide apparatus for use in drilling a bore in a fractured bone such as a trochanter for receipt of a pin. The apparatus includes a portable pistol device having aiming means mounted on the top thereof for alignment with an X-ray imageproducing target placed over such fractured trochanter. Drill guide means is mounted on the pistol device below the aiming means and transverse indicator means is provided on such pistol device. Thus, the target may be placed over the fractured trochanter, an X-ray taken thereof and such X-ray examined to determine the point on such target which aligns with the desired orientation for the bore to be drilled. The aiming means is then aimed at the selected point on the target and the pistol device maneuvered to align the drill means below the aiming means as indicated by the indicator means so the drill may be inserted in such guide means for drilling the bore in the trochanter at the desired location.

Claims

1. Orthopedic drill guide apparatus for use in drilling a bore in a bone and comprising:

an X-ray machine and an X-ray image-producing target for placement exteriorly on said patient adjacent said bone;

a portable pistol device aiming means mounted on the top of said pistol device for alignment with said target;

drill guide means mounted on said pistol device and disposed below said aiming means and removably receiving a drill;

transverse indicator means mounted on said piston device for indicating the transverse inclination of said pistol device whereby said target may be placed exteriorly on a patient adjacent said bone, said X-ray machine oriented in a selected plane over said bone and aimed at said target and said bone, an X-ray picture taken, a target point selected on the image of said target, said aiming means aimed at the corresponding target point and said pistol device maneuvered about while said aiming means is held on said corresponding target spot until said transverse indicator means indicates said aiming means and guide means are in a plane perpendicular to the plane of said X-ray machine.

2. Orthopedic drill guide apparatus as set forth in claim 1 wherein:

said drill guide means is in the form of an elongated guide slot for receiving said drill.

3. Orthopedic drill guide apparatus as set forth in claim 1 wherein:

said aiming means includes an elongated guide pin projecting from said pistol device for having its projecting extremity aligned over said target.

4. Orthopedic drill guide apparatus as set forth in claim 1 wherein:

said target includes a plurality of different shaped figures disposed at selected distances from one another.

5. Orthopedic drill guide apparatus as set forth in claim 1 wherein:

said indicator means is in the form of pendulum means.

6. Orthopedic drill guide apparatus as set forth in claim 1 wherein:

said pistol device is in the form of an inverted L-shaped element;

said aiming means includes an aiming pin projecting from the horizontal leg of said pistol device.

7. Orthopedic drill guide apparatus as set forth in claim 1 wherein:

said drill guide means includes a guide disc rotatably mounted on said pistol device and including a plurality of radially projecting through guide passages of different cross sections.

8. Orthopedic drill guide apparatus as set forth in claim 1 that includes:

a drill jig including a plurality of parallel drill passages whereby said drill may be inserted through said drill guide means to drill a first bore in said bone, one end of a pin inserted in said first bore with the opposite extremity projecting therefrom, said jig installed on said pin by inserting said extremity in one of said drill passages and said drill inserted in other of said drill passages to drill bores parallel to said first bore.

9. Orthopedic drill guide apparatus as set forth in claim 1 that includes:

longitudinal indicator means on said pistol device for indicating the longitudinal inclination of said pistol device and wherein;

said guide means includes indicia for indicating the angle of anteversion of said drill.

10. Orthopedic drill guide apparatus as set forth in claim 1 wherein:

said pistol device is formed with a horizontally projecting portion having said aiming means mounted thereon and a vertically projecting portion having said guide means mounted thereon said device, further including a telescoping means interconnecting said horizontal section and said vertical section.

11. Orthopedic drill guide apparatus as set forth in claim 1 that includes:

a fixed shank guide for use with a fixed shank hip pin having a nail and a shank projecting therefrom at a selected angle, said fixed shank guide including trochanteral aiming means, a shank portion projecting at said selected angle from said trochanteral aiming means, said fixed shank guide further including angular index means extending at an angle to said trochanteral means whereby said target may be positioned over a fractured trochanter, an X-ray taken thereof, said fixed shank guide arranged on said X-ray with said shank portion extending along the image of the femoral shaft and said trochanteral aiming means projecting along the image of the neck of said trochanter to enable the user to obtain points on said target corresponding with the intersection thereof of said trochanteral aiming means and said index means so said fixed shank guide can be transferred to the patient with said trochanteral aiming means and index means aligned with corresponding points on said target and said first mentioned aiming means aligned with said trochanteral aiming means to locate said drill guide means for receipt of said drill.

12. Orthopedic drill guide apparatus as set forth in claim 1 wherein:

said pistol device is formed with an elongated track projecting transversely to saiD aiming means; and

said drill guide is received for longitudinal sliding in said track and includes a plurality of different sized through passages for receipt of different sized drills.

13. Orthopedic drill guide apparatus as set forth in claim 1 that includes:

an anteversion angle indicator including a base plate formed with a drill passage therethrough and anteversion inclination indicator means mounted on said plate.

14. Orthopedic drill guide apparatus as set forth in claim 3 wherein:

said pistol device includes an elongated passage for telescopical receipt of said pin and tightening means for tightening said guide pin in position.