Michael E 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:

47990309, Jan 17, 1989

Filed:

May 12, 1987

Appl. No.:

7/049187

Inventors:

Michael H. Haight - Plano TX
William H. Giolma - Dallas TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03B 508

US Classification:

331117R

Abstract:

An oscillator circuit having a coil and capacitor tank circuit, a clamp resistor connected at one end to the coil and a switch coupled to the clamp resistor and coil. The switch is operative to close in response to a first input logic clamp signal and shunt the coil with an impedance that causes the oscillation to stop quickly. In response to removal of the input logic clamp signal the tank circuit starts to oscillate from a known state. Preferably the clamp resistor has a value which equalizes the tank currents for the clamped and peak unclamped states.

US Patent:

47630868, Aug 9, 1988

Filed:

May 12, 1987

Appl. No.:

7/049186

Inventors:

Michael H. Haight - Plano TX
William H. Giolma - Dallas TX
Richard Boucher - Santa Clara CA

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03B 508
H03L 500

US Classification:

331109

Abstract:

A voltage controlled oscillator circuit of a type having a tank circuit for generating oscillations which includes a means for establishing a fixed bias voltage with respect to ground at a bias end of said tank circuit, means for drawing current from an a. c. end of said tank so as to control the tank gain, and an AGC capacitor. A constant current source is coupled to the AGC capacitor for supplying it with a constant charging current. Means are provided for discharging the AGC capacitor at a voltage level determined by a ratio of resistors and a transistor emitter-base ratio.

US Patent:

49085832, Mar 13, 1990

Filed:

Jul 11, 1988

Appl. No.:

7/217504

Inventors:

Michael H. Haight - Sherman TX

Assignee:

Texas Instruments Incorporated - Dallas TX

International Classification:

H03B 512
H03L 300

US Classification:

331117R

Abstract:

A self contained circuit to enable a tank type (coil/capacitor) voltage controlled oscillator to start up and free run from a known state. The circuit allows the oscillator to be stopped to within two periods by invoking its only input logic signal and also restarted with no adverse effects on its free running operation. It includes three current mirrors, one which sets the current for the other two mirrors and of the final two, one actively sets a bias on a coil (stops oscillation) while the other makes up for the lack of coil bias by providing an equivalent amount current influx to the oscillator in the free running condition.

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.