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. 18, 2023
Filed:
May. 31, 2018
Intuitive Surgical Operations, Inc., Sunnyvale, CA (US);
Duane W. Marion, Scottsdale, AZ (US);
Thomas G. Cooper, Menlo Park, CA (US);
Eric J. Earnst, Saratoga, CA (US);
Jason W. Hemphill, Los Gatos, CA (US);
Alan E. Loh, Los Altos, CA (US);
Intuitive Surgical Operations, Inc., Sunnyvale, CA (US);
Abstract
An apparatus is provided to detect electrical contact between anatomical tissue and a shield conductor: a transformer; an alternating current (AC) reference frequency signal generator to inject a reference frequency signal to a primary winding of the transformer; a reactive impedance coupled in parallel with a secondary winding of the transformer between a first node and a second node; and a phase match detector circuit to detect a phase match between the reference frequency signal and a reflected reference frequency signal that is reflected from the secondary winding to the primary winding.