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:
Jul. 04, 2000
Filed:
Aug. 09, 1993
Applicant:
Inventor:
Emery S Rose, New York, NY (US);
Assignee:
Sherwood Services AG, Schaffhausen, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61B / ;
U.S. Cl.
CPC ...
604 22 ; 606169 ;
Abstract
An electrical apparatus for driving an ultrasonic piezoelectric crystal transducer in a surgical handpiece for the fragmentation and aspiration of tissue, which apparatus includes an electronic control loop in combination with a voltage source amplifier having an output which is connected to the piezoelectric crystal transducer with a tuning inductor in parallel. A control system for monitoring the control loop and a component for controlling tissue selectivity are also disclosed.
Published as:
CA2128090A1; WO9315850A1; AU3057692A; FI943649A7; FI943649L; NO942924D0; NO942924L; DE9290173U1; TW233255B; EP0625077A1; JPH07500273A; KR950700131A; AU663543B2; AU2849795A; JPH08103452A; EP0711611A2; JP2506563B2; EP0711611A3; EP0625077B1; ATE155054T1; DE69220814D1; ES2104953T3; DE69220814T2; AU5628198A; US6083191A;