Michael R Haight

US Patent:

20100198275, Aug 5, 2010

Filed:

Oct 30, 2009

Appl. No.:

12/609666

Inventors:

Barjinder Singh Chana - Rancho Cordova CA, US
Michael G. Fisher - Folsom CA, US
Michael Haight - Sacramento CA, US
Leo Beckers - Grimbergen, BE

Assignee:

Synvavise Technology, Inc. - El Dorado Hills CA

International Classification:

A61B 17/56
A61B 5/103

US Classification:

606 86 R, 600587

Abstract:

Devices, systems, and methods are provided for facilitating the aligning and balancing of the knee during total knee replacement surgery. A femoral assembly is engaged with a distal femur. The positions of medial and lateral portions of the femoral assembly relative to a stationary portion of the femoral assembly can be separately adjusted to adjust the alignment of the knee. A force sensor will be provided to sense the forces in the medial and lateral portions of the knee, and the medial and lateral portions of the femoral assemblies will be adjusted so that the sensed forces are balanced. The alignment of the knee is visually verified using a knee alignment verification member coupled to the femoral assembly. The knee alignment verification member may emit laser beams along the mechanical axes of the femur and tibia, or the knee alignment verification member may couple to alignment rods aligned along these axes.

US Patent:

20120259342, Oct 11, 2012

Filed:

Jun 15, 2012

Appl. No.:

13/524405

Inventors:

Barjinder Singh Chana - Reno NV, US
Michael G. Fisher - Folsom CA, US
Michael Haight - Sacramento CA, US
Leo Beckers - Grimbergen, BE

Assignee:

Synvasive Technology, Inc. - El Dorado Hills CA

International Classification:

A61B 17/90

US Classification:

606 88

Abstract:

A system is provided for positioning a cutting guide on a femur of a knee to make a cut along a distal end of the femur during knee surgery. The system may generally include an adjustable femoral attachment member configured to attach to a cut distal end of the femur, a cutting guide removably attachable to the femoral attachment member and configured to guide a surgical saw to make an additional cut on the distal end of the femur, and a force sensor for positioning between the femoral attachment member and a proximal end of a tibia of the knee. The force sensor may include a medial portion for sensing a medial force in the knee and a lateral portion for sensing a lateral force in the knee.

US Patent:

20170042554, Feb 16, 2017

Filed:

Aug 17, 2016

Appl. No.:

15/239029

Inventors:

- El Dorado Hills CA, US
Michael G. Fisher - Reno NV, US
Michael Haight - Sacramento CA, US
Leo Beckers - Grimbergen, BE
Kenneth D. Johannaber - Reno NV, US

International Classification:

A61B 17/15
A61B 17/02
A61F 2/46

Abstract:

A system is provided for positioning a cutting guide on a femur of a knee to make a cut along a distal end of the femur during knee surgery. The system may generally include an adjustable femoral attachment member configured to attach to a cut distal end of the femur, a cutting guide removably attachable to the femoral attachment member and configured to guide a surgical saw to make an additional cut on the distal end of the femur, and a force sensor for positioning between the femoral attachment member and a proximal end of a tibia of the knee. The force sensor may include a medial portion for sensing a medial force in the knee and a lateral portion for sensing a lateral force in the knee.

US Patent:

20150230804, Aug 20, 2015

Filed:

Apr 21, 2015

Appl. No.:

14/692117

Inventors:

- El Dorado Hills CA, US
Michael G. Fisher - Reno NV, US
Michael Haight - Sacramento CA, US
Leo Beckers - Grimbergen, BE

International Classification:

A61B 17/15
A61B 17/02

Abstract:

Devices, systems, and methods are provided for facilitating the aligning and balancing of the knee dicing total knee replacement surgery. A femoral assembly is engaged with a distal femur. The positions of medial and lateral portions of the femoral assembly relative to a stationary portion of the femoral assembly can be separately adjusted to adjust the alignment of the knee. A force sensor will be provided to sense the force's m the medial and lateral portions of the knee, and the medial and lateral portions of the femoral assemblies will be adjusted so that the sensed forces are balanced. The alignment of the knee is visually verified using a knee alignment verification member coupled to the femoral assembly. The knee alignment verification member may emit laser beams along the mechanical axes of the femur and tibia, or the knee alignment verification member may couple to alignment rods aligned along these axes.