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:
Jan. 07, 2003
Filed:
May. 03, 1999
Frederick Paget Milsom, Auckland, NZ;
Milsom Holdings Limited, , NZ;
Abstract
The apparatus includes a flow control conduit ( ) connectable with an output portion of the heart, preferably a bypassed portion of the aorta, and includes a means of feeding heart fluid (R/O), for example blood or cardioplegia into the heart. The flow control device ( ) includes in communication a variable resistance pressure control means ( ) which is variably biased to a closed position to maintain on the bypassed heart region a predetermined level of pressure, to facilitate the creation of back pressure during filling of the bypassed heart region or a beat or pumping phase of the heart, and when the heart fluid pressure increases to reach a predetermined threshold, the pressure control means facilitates a release of fluid from the conduit, thus facilitating expulsion of potential emboli from the bypassed heart region, and enabling “cycling” of the heart while in a bypassed condition, prior to the bypassed region being taken off bypass. The invention includes preferred and alternative embodiments of variable resistance pressure control means including a hollow deformable bladder ( ) biased by a compressible control fluid externally of said bladder.