The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 10, 1998
Filed:
Nov. 18, 1997
Rod Ross, Laguna Niguel, CA (US);
Greggory Hughes, Fountain Valley, CA (US);
James C Boore, Poway, CA (US);
Scieran Technologies, Inc., Laguna Niguel, CA (US);
Abstract
A surgical tissue cutter. The cutter includes an inner sleeve that moves adjacent to an outer port of an outer sleeve. The outer port is coupled to a source of vacuum that pulls tissue into the outer port when the inner sleeve is moved away from the port. The inner sleeve then moves across the outer port and severs the tissue in a guillotine fashion. The inner sleeve is coupled to a rotating output shaft of a motor by a wobble plate which induces an oscillating translational movement of the sleeve in response to a rotation of the output shaft. The motor speed is controlled by a foot pedal which allows the surgeon to directly control the cutting speed of the device. The wobble plate can be replaced to vary the stroke and duty cycle of the inner sleeve. The inner sleeve is coupled to an aspiration line that pulls the severed tissue out of the cutter. The level of the aspiration vacuum pressure can be controlled by varying the speed of the motor and the movement of the inner sleeve. The inner sleeve functions as both a cutter and a control valve that controls the flow of fluid through the outer port. Controlling the fluid flow at the outer port provides a vacuum control system that has an almost instantaneous response time.