Guide-pin placement device and method of use

• US 6,036,696 A
• Filed: 12/19/1997
• Issued: 03/14/2000
• Est. Priority Date: 12/19/1997
• Status: Expired due to Term

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Stryker Technologies Corporation (Stryker Corporation)
• Inventors: Robbins, Kathleen Nydzik, Einhorn, Jacob, Lambrecht, Greg, Stern, Brett Jason
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): REIP, DAVID OWEN
• Application Number:
  US08/994,507
• Time in Patent Office: 816 Days
• Field of Search: 606/96, 606/97, 606/98, 606/104, 606/129, 606/130
• 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
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

A hand instrument and method for use by a surgeon to target the appropriate entry point and trajectory on bony tissue through which an instrument, such as a nail, pin, screw, rod, wire, drill bit, or other implant is passed. Imbedded within the instrument is at least one relatively radio-opaque target which allows the user to predict with the use of an x-ray or fluoroscopic imaging device the placement of said instrument or implant before drilling it into place with the use of an x-ray or fluoroscopic imaging device. By manipulating the device around the axis of the guide piece, the surgeon can predict the placement of the instrument or implant without iterative insertion and removal of the instrument or implant itself.

Claims

1. An orthopedic targeting device for the placement of an instrument in a desired position relative to a bony target using an imaging device, said device comprising:

a body of said targeting device defining a guide passageway through which said instrument is passed; and

more than one arm member fixed to said body, each arm member containing at least one relatively radio-opaque target marker that establishes a plane that is coplanar with an axis of said passageway.

2. The device of claim 1 wherein said targeting device has two arm members disposed from each other approximately 90°

apart about said axis.

3. An orthopedic targeting device for the placement of an instrument in a desired position relative to a bony target using an imaging device, said device comprising:

a body of said targeting device defining a guide passageway through which said instrument is passed; and

at least one targeting member fixed to said body wherein said targeting device has two relatively radio-opaque target markers extending at least partially from one end of said targeting member toward the opposite end of said targeting member; and

a substantially open gap in the targeting member between each of said target markers wherein said target markers establish a plane that is coplanar with an axis of said passageway.

4. An orthopedic targeting device for the placement of an instrument in a desired position relative to a bony target using an imaging device, said device comprising:

a body of said targeting device defining a guide passageway through which said instrument is passed; and

at least one targeting member fixed to said body and containing at least one relatively radio-opaque target marker that establishes a plane that is coplanar with an axis of said passageway wherein said targeting device has at least one area of said targeting member coated with a contrast medium.

5. An orthopedic targeting device for the placement of an instrument in a desired position relative to a bony target using an imaging device, said device comprising:

a body of said targeting device defining a guide passageway through which said instrument is passed; and

at least one targeting member fixed to said body and containing at least one relatively radio-opaque target marker that establishes a plane that is coplanar with an axis of said passageway;

wherein said targeting device has an angle guide with a front angled portion and a rear portion comprising at least part of said body of said targeting device and configured and dimensioned to be secured to bony surface; and

wherein said angle guide has teeth which are broader at the base of said teeth than at the apex of said teeth and are on said front angled portion of the angle guide.

6. An orthopedic targeting device for the placement of an instrument in a desired position relative to a bony target using an imaging device, said device comprising:

a body of said targeting device defining a guide passageway through which said instrument is passed; and

at least one targeting member fixed to said body and containing at least one relatively radio-opaque target marker that establishes a plane that is coplanar with an axis of said passageway wherein at least one relatively radio-opaque target marker has at least two substantially perpendicular sections;

at least one first section extending distally from a point proximal one end of said targeting member toward the opposite end; and

at least one second section substantially perpendicular to the first section and extending toward a bony target.