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:
Oct. 18, 1977
Filed:
Apr. 08, 1977
Seth R Goldstein, Bethesda, MD (US);
Abstract
An electrically controlled magnetic fluid actuated device, which can be used in controlling fluid flow and which has particular utility in controlling this flow from a pressurized reservoir implanted in the body such as might be used for an artificial pancreas, sphincter for bladder control or other orthotic devices in the body of a human, has no freely moving parts and consists of a flow passageway having a portion the cross-section of which may be varied to control and to stop the flow of fluid, such as medicine, from a reservoir in the body to the point where this fluid is needed. A magnetic fluid which surrounds or contacts this portion of the passageway can, according to the presence or lack of a magnetic flux in its vicinity, occlude the passageway or allow it to open so as to control the fluid flow in the flow member.