Wayne R Rogers

US Patent:

46225030, Nov 11, 1986

Filed:

Sep 26, 1985

Appl. No.:

6/781393

Inventors:

Leif J. Sundblom - Castro Valley CA
Daniel D. Rogers - Berkeley CA
Wayne W. Rogers - Napa CA

Assignee:

Medical Instrument Development Laboratories, Inc. - San Leandro CA

International Classification:

G05D 1500

US Classification:

318645

Abstract:

A variable pneumatic output device for use with ophthmalic micro-surgical instruments including a reversible servo motor which operates in response to instructions from an electronic control circuit. The rotatable drive shaft of the servo motor is operatively connected to the adjustable level control of a precision pressure regulator which operates between a fully open level and a fully closed level. The pressure regulator is operatively connected between a pressurized air source and the pneumatically driven micro-surgical instrument and according to the instructions of the electronic control circuitry, the servo motor, through the connecting drive to the regulator, adjusts the level of pneumatic output to the surgical instrument.

US Patent:

50205358, Jun 4, 1991

Filed:

Dec 21, 1987

Appl. No.:

7/136208

Inventors:

Donald A. Parker - Berkeley CA
Wayne W. Rogers - Napa CA

Assignee:

Alcon Laboratories, Inc. - Fort Worth TX

International Classification:

A61B 1732

US Classification:

606174

Abstract:

There is disclosed herein a system for providing control of multiple functions needed to perform eye surgery. A microprocessor based system controls a pneumatic system for driving pneumatic scissors in either a variable frequency, multicut mode or a proportional cut mode where the cutting pressure is proportional to the position of a foot operated position sensor.

US Patent:

47685069, Sep 6, 1988

Filed:

Sep 26, 1985

Appl. No.:

6/780689

Inventors:

Donald A. Parker - Berkeley CA
Wayne W. Rogers - Napa CA

Assignee:

Alcon Laboratories, Inc. - Fort Worth TX

International Classification:

A61B 1732

US Classification:

128303R

Abstract:

There is disclosed herein a system for providing control of multiple functions needed to perform eye surgery. A microprocessor based system controls a pneumatic system for driving pneumatic scissors in either a variable frequency, multicut mode or a proportional cut mode where the cutting pressure is proportional to the position of a foot operated position sensor.

US Patent:

48503770, Jul 25, 1989

Filed:

Apr 18, 1988

Appl. No.:

7/183424

Inventors:

Donald A. Parker - Berkeley CA
Wayne W. Rogers - Napa CA

Assignee:

Allon Laboratories, Inc.

International Classification:

A61B 1732

US Classification:

128898

Abstract:

There is disclosed herein a system for providing control of multiple functions needed to perform eye surgery. A microprocessor based system controls a vacuum generation system using venturis and linear valves and a pneumatic system for driving vitrectomy probes and pneumatic scissors in either a variable frequency, multicut mode or a proportional cut mode where the cutting pressure is proportional to the position of a foot operated position sensor.

US Patent:

47578149, Jul 19, 1988

Filed:

Jan 7, 1987

Appl. No.:

7/001235

Inventors:

Carl C. T. Wang - Piedmont CA
Wayne W. Rogers - Napa CA
Donald A. Parker - Berkeley CA

Assignee:

Alcon Laboratories, Inc. - Fort Worth TX

International Classification:

A61B 1732

US Classification:

128318

Abstract:

A system 10 for proportional control of a pneumatic cutting device 13 includes a linear solenoid valve 11 having a flow rate therethrough proportional to the current passing through the solenoid 32. The linear solenoid valve 11 is actuated by a selectively varied electrical signal generated by a power supply 18 and controlled by a potentiometer 14 which is itself operated by a pedal foot controller 16. Regulated fluid pressure is fed through the linear soleoid valve 11 to a pneumatic cutting device 13 such as an intraocular microscissors which closes increasingly as the applied pressure increases. The linear solenoid valve 11 includes a flow path which is variably constricted or closed by a valve member 36, and a solenoid 32 which is arranged to pull the valve member 36 to open the flow path. An elastic member 35 is disposed to resiliently bias the valve member to the closed position; the linear restoring force of the elastic member provides a generally linear relationship between the fluid flow-through rate and the current through the solenoid 32, and a proportional relationship between the control pedal position and closure of the cutting device.