US 4,381,770 AGranted

Method and apparatus for performing percutaneous bone surgery and new pin implant

OwnerAlonzo J. Neufeldinventor

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Abstract

Apparatus and method of performing percutaneous bone surgery particularly to repair a particular fractured trochanteric portion of a femur. The technique includes the making of a small first incision to the bone, introducing a tubular guide, placing a drill in the tube activating the same, drilling a bore into the bone, withdrawing the drill and guide and inserting a new pin and pin insertion means to place the pin in position in the bore and due to its design leaving a portion extending from said bone bore to abut and lie against the femur at approximately 145.degree. to the angle of the portion of the pin in the bore. In addition the pin insertion means includes a portion adapted to abut the exterior skin and serve as a guide for an additional small incision, insertion of a tubular guide, placing a drill in the guide, drilling a second bore below the first bore and at an angle thereto. The pin includes a bore which is aligned with the tubular guide when in its second position and is adapted to receive a fastening means to lock the pin to the bone during the bone healing process.

Claims10

Dependent claims

For performing percutaneous bone surgery and aid the healing of a fracture, an elongated tubular guide adapted to be inserted through a small skin surface and tissue incision and positioned at a predetermined angle to the axis of the femur bone with an end abutting said bone and its exterior end remaining outwardly of said skin surface, said guide serving to direct a drill bit to said bone and assuring proper angular direction to form a first bore in said bone when said drill bit is activated, the combination of:

a pin means having one forward straight portion with a first axis for insertion in said first bore and a second short rear extension portion having a second axis approximately 145.degree. to said first axis, and a bore extending through said second short rear extension portion;
a pin insertion means including pin gripping means to releasably hold said pin wherein said pin insertion means has a portion for entering said incision to place said forward straight portion by friction in said bore whereby said short rear extension is adapted to abut and be parallel to said femur leg bone;
a second tubular guide for inserting through a small skin surface and tissue second incision above said first incision and at an angle thereto aligned with and abutting said bore in said pin;
adjustable linking means securing said pin insertion means and said second tubular guide in a predetermined angular relationship;
said second tubular guide serving to direct a second drill bit through said bore to form a second bore in said bone when said drill bit is activated;
a fastening means with a tool interlock means at a rearward end inserted in said second bore to secure said pin to said femur;
and
a tool having a complimentary interlock means with said fastening means slidably inserted into said second guide to engage said fastening means.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 06/315,238Filed 26 Oct 1981
Granted: 3 May 1983
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

A61B 17/1721
Guides or aligning means for drills , mills, pins or wires: for applying pins along or parallel to the axis of the femoral neck
A61B 17/1725
Guides or aligning means for drills , mills, pins or wires: for applying transverse screws or pins through intramedullary nails or pins
A61B 17/746
Having one or more longitudinal elements oriented along or parallel to the axis of the neck: the longitudinal elements coupled to a plate opposite…
A61B 17/88
For osteosynthesis, e.g. bone plates, screws or setting implements: osteosynthesis instruments; Methods or means for implanting or extracting…