A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
A61M 1/10 (2006.01)
Patent
CA 2336141
The invention is a high-pressure inflation system for driving an inflatable heart assistance device. The system includes a fluid source (22) for supplying a fluid at a relatively high-pressure and a compression tank (32) plumbed in selective communication with the pneumatic source. The compression tank is operative to store a predetermined volume of the pressurized fluid at approximately the high-pressure created by the fluid source. A transfer valve (106) is disposed downstream of the compression tank, and is coupled to the heart assistance device. The compression tank and transfer valve are maintained in close proximal relation to the heart assistance device with the transfer valve being responsive to predetermined signals to expose the heart assistance device to the compression tank pressure expanding the device to compress, and assist the heart.
L'invention porte sur un système pneumatique gonflable d'assistance cardiaque comprenant une source (22) de fluide à pression relativement élevée et un réservoir (32) de compression à haute pression en communication sélective avec la source de fluide. Le réservoir de compression permet de stocker un volume prédéterminé de fluide sous une pression élevée, approximativement du niveau de celle fournie par la source. Une soupape (106) de transfert placée en aval du réservoir de compression est reliée au dispositif d'assistance cardiaque. Le réservoir de compression et la soupape de transfert sont placés au voisinage et en amont du dispositif d'assistance cardiaque et la soupape répond à des signaux prédéterminés qui soumettent le dispositif d'assistance à la pression du réservoir et le gonflent pour comprimer le coeur et l'assister.
Baldwin R. C. Mitchell II
Levin Howard R.
Michelman Paul C.
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