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:
Dec. 02, 1997
Filed:
Dec. 18, 1995
Timothy J Cox, Lake Jackson, TX (US);
Sulzer Intermedics Inc., Angleton, TX (US);
Abstract
An optically-controlled high-voltage switch for an implantable defibrillator. A three-terminal high-voltage-tolerant semiconductor switch exhibits high conductivity between its high-voltage terminal and its common terminal in response to a low control voltage applied between its control terminal and its common terminal, where the low control voltage exceeds a characteristic threshold value, and exhibits low conductivity between same where the control voltage is less than the characteristic threshold value. A photovoltaic coupler/isolator having a light emitting device and a photovoltaic device, optically coupled to and electrically isolated from each other, is in circuit communication across the control and common terminals. A low voltage current source drives the light emitting device of the photovoltaic coupler/isolator. A switch-off opto-isolator having a light emitting device and a light sensitive conductive device, optically coupled to and electrically isolated from each other, is in circuit communication across the control and common terminals of the semiconductor switch. A switch-off low voltage current source drives the light emitting device of the switch-off opto-isolator. A switch-on opto-isolator having a light emitting device and a light sensitive conductive device, optically coupled and electrically isolated from each other, is in series circuit communication between the photovoltaic device and the semiconductor switch. A switch-on low voltage current source drives the light emitting device of the switch-on opto-isolator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile