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. 19, 1985
Filed:
May. 13, 1983
Earl R Collins, La Canada, CA (US);
Other;
Abstract
A drug dispensing device for in-vivo implantation has a diaphragm defining a movable wall of a container for drug fluid, the diaphragm being moved by expanding gas volumes differentially activated by electric heater means controlled by a calendar-clock to induce drug fluid through a constant flow valve in one wall of the container and into the living organism, discretely, or continuously over a period of time or at intervals controlled by the clock. The container is refilled with fresh drug by injection through the skin and a puncturable seal valve while the diaphragm is actuated in a reverse direction by heater activation. The dispensing program can be changed externally by electromagnetically coupled signals; the controller batteries can be similarly recharged by external coupling to a power source. Freshness of the drug and the size of the container determine the time between refills.