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:
Mar. 06, 1990
Filed:
May. 03, 1988
Richard K Wampler, Rancho Cordova, CA (US);
Nimbus Medical, Inc., Rancho Cordova, CA (US);
Abstract
A high-frequency transvalvular blood pump for temporary cardiac assist provides suction to decompress the ventricular cavity during both systole and diastole. The intake end of the pump is connected to a cannula which is inserted into the ventricular cavity through the aortic valve, and which has an intake opening at its distal end. The intake and outflow ends of the pump are closed, respectively, by one-way valves which allow blood flow only in the direction of body perfusion. The pump itself consists of a stiff barrel whose interior volume can be alternately reduced and expanded by a flexible membrane controlled by pneumatic or hydraulic pressure from an extracorporeal location through a percutaneously inserted lumen.