Donald E Stenger

Address:

775 W California Way, Woodside, CA 94062

VIN:

1G4HE57Y97U114946

Make:

BUICK

Model:

LUCERNE

Year:

2007

US Patent:

53542681, Oct 11, 1994

Filed:

Nov 4, 1992

Appl. No.:

7/971416

Inventors:

Erik W. Peterson - Walnut Creek CA
Donald C. Stenger - Pleasanton CA

Assignee:

Medical Instrument Development Laboratories, Inc. - San Leandro CA

International Classification:

A61M 100

US Classification:

604 35

Abstract:

A pneumatic pressure delivery system capable of delivering negative pressure (vacuum or suction) or positive pressure with a precise, continuously variable and predictable control of the pressure delivered is disclosed. The method and apparatus includes the capability of electronically adjusting the variation of pressure to follow any desirable functional mathematical relationship of a control signal. The apparatus includes an electronically controlled pressure regulator in which the pressure at the outlet of a regulator acts upon a piston or diaphragm in opposition to a force produced by an electronic controller. The piston or diaphragm is mechanically coupled to a flow control valve such that the valve alters its position to increase or decrease the flow to its outlet in response to the force exerted on the piston or diaphragm. The invention is also directed toward an aspiration method and apparatus which includes a cassette and a cassette holder to be used in conjunction with the suction and pressure control system. The aspiration method and apparatus utilizes a first chamber having a flexible diaphragm to communicate vacuum to an aspiration port which is connected to a surgical instrument.

US Patent:

47877014, Nov 29, 1988

Filed:

Nov 13, 1984

Appl. No.:

6/671145

Inventors:

Donald C. Stenger - Pleasanton CA
Roger H. Ellis - Atherton CA

Assignee:

Raychem Corp. - Menlo Park CA

International Classification:

G02B 638

US Classification:

350 9621

Abstract:

An assembly for interconnecting a plurality of first contacts disposed in a ribbon array with a plurality of second contacts, also disposed in a ribbon array, includes a plurality of cylindrical radial springs which are split longitudinally along an axial direction of the contacts, each radial spring providing three common lines of contact with the mating first and second contacts so as to precisely align front ends of mating the first and second contacts. The assembly further includes dynamic seals on opposite ends of an alignment insert which contains the cylindrical, radial springs, the dynamic seals preventing foreign matter from entering an interface between front ends of the mating first and second contacts, and also functioning to dampen shock- and vibration-induced displacements of the mating first and second contacts.