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. 13, 1998
Filed:
Mar. 08, 1995
Bruno Slettenmark, Jaefaella, SE;
Siemens Aktiengesellscahaft, Munich, DE;
Abstract
An implantable infusion system has a neutral pressure medication supply container for liquid medication to be delivered to the patient, the supply container being devised so that its volume changes according to the amount of medication it contains, and a pump for pumping medication from the supply container, via a catheter, to the patient's body. The supply container and the pump are arranged inside an enclosure to which the catheter is connectable at the output of the pump. A closed space, at least partly contained inside the enclosure, in which the supply container is arranged, and in which essentially atmospheric pressure prevails, is arranged to change its volume to a corresponding degree when the volume of the supply container changes, so that the pressure is kept essentially unchanged.