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:
Apr. 08, 1980
Filed:
Dec. 23, 1977
Ira M Nathan, Carmel, NY (US);
Joseph N Cunningham, New York, NY (US);
Other;
Abstract
An apparatus for perfusing the heart of a patient with oxygenated blood detects the blood pressure at the point of supply, usually the aortic root or a coronary blood vessel, and transmits this pressure to a pressure switch which controls a solenoid valve for recycling blood driven by a roller pump to the oxygenator, or, selectively, through a surge tank and to the point of supply within the patient's vascular system. The surge tank has an air cushion therein for holding essentially constant the pressure at which the blood is supplied to the patient, and, thus, for holding constant the pressure at the point of supply. The system is fail-safe since the pressure switch can be connected to the solenoid so that blood is pumped to the surge tank and thence to the patient in the event of the failure of an electrical connection to the solenoid valve. Provision is made for continuous feed of blood to the patient at a greater-than-normal rate should an emergency arise or for cutting off the flow of blood to the patient when desired.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile