Instrumented linkage system

Patent metadata

Field	Value
Publication number	US-9827115-B2
Application number	US-51487008-A
Country	US
Kind code	B2
Filing date	Jan 25, 2008
Priority date	Jan 26, 2007
Publication date	Nov 28, 2017
Grant date	Nov 28, 2017

Abstract

An instrumented linkage system ( 100 ) to facilitate accuracy and efficiency of a surgical procedure is disclosed. The linkage system may be directly attached to a bone and used to register the bone to a computer. The linkage system may also be used to verify the accuracy and alignment of planned resections relative to the bone.

First claim

What is claimed is:

1. A method of placing a cutting guide on at least one bone, the method comprising the steps of:
providing an instrumented linkage system having a first extremity and a second extremity, the first and second extremities interconnected and located on opposed ends of the instrumented linkage system;
affixing the first extremity of the instrumented linkage system to a substrate;
coupling a digitizing fixture to the second extremity of said instrumented linkage system;
digitizing a plurality of points of said at least one bone using the digitizing fixture;
coupling a cutting guide supporting fixture to said second extremity of said instrumented linkage system, said cutting guide supporting fixture having said cutting guide fixed thereto;
using the second extremity of the instrumented linkage system to locate said cutting guide, mounted to said second extremity of said instrumented linkage system, into a selected position relative to said at least one bone;
coupling a paddle fixture to the second extremity of said instrumented linkage system;
placing an end of said paddle fixture into a guide member of said cutting guide;
using the instrumented linkage system to adjusting an angular orientation of said paddle fixture to thereby adjust an angular orientation of said guide member relative to said at least one bone; and
securing said cutting guide to said at least one bone.

2. The method of claim 1 , wherein said substrate is a first bone.

3. The method of claim 2 , wherein said step of affixing a first end of an instrumented linkage system to a substrate includes the steps of:
coupling a first member of a bone mount to said first bone with a fastener;
coupling a second member of said bone mount to said first member of said bone mount; and
coupling said second member of said bone mount to said instrumented linkage system.

4. The method of claim 1 , wherein said substrate is a patient support and said step of affixing a first end of an instrumented linkage system to a substrate includes the steps of:
coupling a patient support mount to said substrate; and
coupling said instrumented linkage system to said patient support mount.

5. The method of claim 1 , wherein said step of digitizing a plurality of points of said at least one bone includes the steps of:
prompting for a first landmark point;
receiving an indication that a tip of said digitizing fixture is positioned at said first landmark point; and
receiving an indication of a position of each of a plurality of moveable couplings of said instrumented linkage system.

6. The method of claim 1 , wherein said step of locating said cutting guide includes the steps of:
affixing a frame of said cutting guide to said at least one bone; and
adjusting the angular orientation of said guide member relative to said frame based on a determined location of said end of said paddle fixture.

7. The method of claim 6 , wherein said step of securing said cutting guide to said at least one bone further includes the steps of:
locking said angular orientation of said guide member relative to said frame;
adjusting a translational position of said guide member relative to said frame based on said determined location of said end of said paddle fixture; and
locking said translational position of said guide member relative to said frame.

Assignees

• Walker Peter S
• Forman Rachel E
• Wei Chih-Shing
• Zimmer Inc

Inventors

• Walker Peter S
• Forman Rachel E
• Wei Chih-Shing

Classifications

• A61F2002/4658

  for measuring dimensions, e.g. length · CPC title

• A61B2090/067

  for measuring angles · CPC title

• A61F2002/4632

  using computer-controlled surgery, e.g. robotic surgery · CPC title

• A61F2/4657 Primary

  Measuring instruments used for implanting artificial joints (for surgical instruments A61B90/06) · CPC title

• A61B2034/107

  Visualisation of planned trajectories or target regions · CPC title