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:
Apr. 23, 2013
Filed:
May. 20, 2003
Peter C. Lord, Valencia, CA (US);
Clyde K. Nason, Wasco, CA (US);
Darren Y. K. Yap, Valencia, CA (US);
Stephen D. Das, The Woodlands, TX (US);
Ronald J. Lebel, Sherman Oaks, CA (US);
Peter C. Lord, Valencia, CA (US);
Clyde K. Nason, Wasco, CA (US);
Darren Y. K. Yap, Valencia, CA (US);
Stephen D. Das, The Woodlands, TX (US);
Ronald J. Lebel, Sherman Oaks, CA (US);
The Alfred E. Mann Foundation For Scientific Research, Santa Clarita, CA (US);
Abstract
An implantable medication delivery device that is highly space efficient and can reliably and safely deliver controlled medication doses to a target site. The system includes a variable volume medication reservoir that is exposed to an ambient pressure equal to the ambient pressure at a system outlet port. A pump/valve subassembly is provided to draw medication from the reservoir and force a medication dose along a fluid transfer passageway to the outlet port. The pump/valve subassembly incorporates a safety mechanism, e.g., a balanced valve, which normally blocks medication flow to the outlet port and opens only in response to a pump induced unbalancing force. A protective shell is also disclosed for protecting the ambient reservoir.