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:
Sep. 08, 1998
Filed:
Apr. 10, 1996
Michael A Brodsky, Hillsboro, NH (US);
Kenneth W Krause, Sandown, NH (US);
Smith & Nephew, Inc., Andover, MA (US);
Abstract
A surgical system, adapted to operate with at least one surgical device, has a handpiece containing a motor which is adapted to receive the surgical device. The surgical device is driven through a continuum of positions by the motor output shaft. A controller microprocessor controls the operation of the system. The motor has addressable switch assemblies for generating electrical state signals and the controller is responsive to the state signals for controlling the operation of the motor. The addressable switch assemblies are addressable Hall-effect circuit switches connected to the controller over a two wire switch bus. In connection with an arthroscopic device, the system enables the surgeon to control operation of the device from the handpiece. The surgical control system also provides a more linear relationship between the duty cycle of a pulse width modulated control signal and the resulting motor armature rotational velocity.