Steven L Weiss

US Patent:

40419479, Aug 16, 1977

Filed:

Jun 23, 1975

Appl. No.:

5/589484

Inventors:

Steven N. Weiss - New York NY
Alan Broadwin - Brooklyn NY

Assignee:

Cavitron Corporation - New York NY

International Classification:

A61M 100
G05D 1111

US Classification:

128276

Abstract:

A fluidic control system for use in irrigation and aspiration of the anterior chamber of the eye during ultrasonic emulsification of a cataract therein. The system comprises a handpiece with an (ultrasonically vibrated) hollow tip, the hollow tip being connected to the fluid withdrawal or aspirating portion, while an annular passage around the tip is used to introduce fluid for irrigation purposes. The aspirating portion comprises a withdrawal hose attached to the output manifold of the handpiece in fluid communication with the hollow tip, a constant flow pump attached to the other end of the withdrawal hose, and a vacuum relief valve connected to the withdrawal hose intermediate the pump and the handpiece. The irrigation portion comprises a fluid supply bottle at a predetermined height above the eye, and administration set attached to the bottle, and an inflow hose attached to the intake manifold of the handpiece and in fluid communication with the annular passage. All the aforementioned components are in fluid communication with the anterior chamber of the eye during removal of a cataract by insertion of the handpiece tip into the eye chamber.

US Patent:

41367006, Jan 30, 1979

Filed:

Jun 14, 1976

Appl. No.:

5/696321

Inventors:

Alan Broadwin - Brooklyn NY
Steven N. Weiss - Laguna Niguel CA
Stanley H. Enker - Lawrence NY

Assignee:

Cavitron Corporation - New York NY

International Classification:

A61B 1732

US Classification:

128305

Abstract:

Apparatus for use in surgically removing tumorous neurological tissue comprises a handpiece in which a tool tip vibrating transversely to its long axis in the ultrasonic range, is mounted an irrigation fluid outlet for introducing fluid adjacent the tool tip to flush the operative site, and a fluid inlet adjacent the tool tip for withdrawing a fluid mixture from the site.

US Patent:

40168824, Apr 12, 1977

Filed:

Mar 5, 1975

Appl. No.:

5/555474

Inventors:

Alan Broadwin - Brooklyn NY
Steven N. Weiss - Laguna Niguel CA
Stanley H. Enker - Lawrence NY

Assignee:

Cavitron Corporation - New York NY

International Classification:

A61B 1732

US Classification:

128305

Abstract:

Method and apparatus are disclosed for use in surgically removing tumorous neurological tissue which apparatus comprises a handpiece mounting a hollow tool tip vibrating transversely to its long axis in the ultrasonic range, means for introducing fluid adjacent the tool tip to flush the operative site area, and means adjacent the tool tip for withdrawing the fluid mixture from the site. The method comprises applying an ultrasonically vibrated tool to tumorous nerve tissue, while simultaneously introducing irrigation fluid to flush the area of the tissue and withdrawing the resulting mixture from the area adjacent the tool.