Assembly for inserting rigid shafts into fractured bones

• US 3,867,932 A
• Filed: 01/18/1974
• Issued: 02/25/1975
• Est. Priority Date: 01/18/1974
• Status: Expired due to Term

• Current Assignee: Donald R. Huene
• Original Assignee: Donald R. Huene
• Inventors: Huene, Donald R.
• Primary Examiner(s): Gaudet, Richard A.
• Assistant Examiner(s): Yasko, J.
• Application Number:
  US05/434,423
• Time in Patent Office: 403 Days
• Field of Search: 128/92E,92EA,92EB,92EC,92R,83
• US Class Current: 606/80
• CPC Class Codes: A61B 17/17 Guides or aligning means for drills , mills, pins or wires
• CPC Class Codes: A61B 17/8866 for gripping or pushing bones, e.g. approximators joint distractors A61B17/025
• CPC Class Codes: A61B 50/31 Carrying cases or bags, e.g. doctors' bags

Abstract

An improved assembly for use in techniques wherein substantially rigid shafts are employed for joining opposed segments of a fractured bone, including a clamp characterized by an elongated body of a generally C-shape configuration having a fixed jaw projected laterally from one end thereof, for engaging a fractured bone at a first surface, a bearing sleeve affixed to the opposite end of the body, a movable jaw of a tubular configuration adapted to be fixed within said bearing sleeve in opposed relation with the fixed jaw for engaging the fractured bone at a second surface opposed to said first surface and manually operable means adapted to be received telescopically by the movable jaw and employed for inserting a shaft into the bone.

Claims

1. In an assembly for inserting rigid shafts into opposed segments of a fractured bone, the improvement comprising:

a clamp including an elongated body having a fixed jaw projected laterally therefrom adapted to engage a fractured bone at a first surface thereof, a bearing sleeve fixed to said body in spaced relation to said fixed jaw, an axially movable jaw including a body of a tubular configuration supported by said bearing sleeve and having a distal end of a bifurcated configuration for engaging the fractured bone at a second surface thereof, oppositely related to said first surface, and means for securing said movable jaw in a fixed relationship with said fixed jaw.

2. an elongated sleeve telescopically received by said movable jaw including a closure plug for closing said sleeve at one end thereof and having a second axial bore extended therethrough in coaxial alignment with said first axial bore, and

3. The improvement of claim 2 further comprising axially movable drill means for drilling an elongated opening in said bone, including an elongated base adapted to be received telescopically within said movable jaw and supported thereby for displacement along a linear path, a drill bit projected axially from said base, and stop means for limiting axial motion imparted to said drill.

4. The improvement of claim 3 wherein said stop means includes a stop sleeve fixed to the base of said drill, in concentric relation therewith, and means defining about said bearing sleeve an annular collar positioned to be engaged by said stop sleeve as axial motion is imparted to said axially movable drill means.

5. The improvement of claim 4 further comprising means for inserting into said elongated opening a screw-threaded shaft having a screw-head affixed thereto, including an elongated base configured to be received within said movable jaw, in telescopic relation therewith, and a plurality of axially extended, screw-engaging blades adapted to be received by the head affixed to said screw-threaded shaft.

6. The improvement of claim 5 further comprising cutting means for forming internal screw threads in said elongated opening including an elongated base configured to be received in telescopic relation with said movable jaw and means defining a tap projected axially from the base of said cutting means.

7. The improvement of claim 6 further comprising measuring means for determining the depth of the elongated opening formed in said bone, including an elongated base configured to be received within the tubular body of said movable jaw, a support sleeve adapted to be received telescopically by the base of the measuring means, means for securing the support sleeve to the base of the measuring means, and an elongated scale projected in parallelism with the longitudinal axis of symmetry of said support sleeve.

8. In an assembly for inserting rigid shafts into opposed segments of a fractured bone the improvement comprising:

A. a clamp including an elongated body having a fixed jaw projected laterally therefrom for engaging a fractured bone at a first surface thereof, a movable jaw including a body of a tubular configuration supported by said clamp in opposed relation with said fixed jaw for engaging the fractured bone at a second surface opposed to said first surface, and means for securing said movable jaw in fixed relation with said fixed jaw;

B. means for inserting into said bone an elongated shaft including,

9. The improvement of claim 8 further including means defining a depth gauge along the external surface of said movable jaw.

10. In an assemblY for inserting rigid shafts into opposed segments of a fractured bone, the improvement comprising:

a clamp including an elongated body having a fixed jaw projected laterally therefrom including means defining a protuberance for engaging a fractured bone at a first surface thereof, a bearing sleeve fixed to said body in spaced relation to said fixed jaw, an axially movable jaw including a body of a tubular configuration supported by said bearing sleeve including means defining a plurality of prongs projected axially from the tubular sleeve for engaging the fractured bone at a second surface thereof, oppositely related to said first surface, and means for securing said movable jaw in a fixed relationship with said fixed jaw.

11. In an assembly for inserting rigid shafts into juxtaposed segments of a fractured bone, the improvement comprising:

a clamp including an elongated body member having a fixed jaw projected laterally from one end thereof for engaging a fractured bone at a first surface thereof, a bearing sleeve fixed to said body member in spaced relation to said fixed jaw, an axially movable jaw including a tubular body telescopically supported for axial displacement by said bearing sleeve, and having means defining a plurality of prongs projected axially from one end thereof, for engaging the fractured bone at a second surface thereof, opposite said first surface, and means for securing said movable jaw in a fixed relationship with said fixed jaw.

12. The improvement of claim 11 further comprising means including an axially movable drill member for drilling an elongated opening in the juxtaposed segments of said bone, including an elongated base configured to be received within said tubular body and supported thereby for axial displacement relative thereto along a linear path, and means defining a cutting surface extended from said base.