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. 22, 2003
Filed:
Aug. 01, 2001
Peter Forsell, Menzingen, CH;
Potencia Medical AG, Baar, CH;
Abstract
A pump for medical implantation is disclosed which comprises a housing forming a cylindrical cavity, a cylindrical piston movable in the cavity for providing fluid communication between the cavity and channels opening to the cavity, and a motion device for magnetically rotating the piston and moving it back and forth to provide fluid flow between the cavity and the channels. Advantageously, the cylindrical piston is movable as a loose body in the cavity, and thus, functions as a valve. As a result, the pump of the invention is simple and very reliable, since it is devoid of traditional valves. When implanted in a patient, the pump can be used to pump hydraulic fluid between a reservoir and a hydraulic constriction device also implanted in a patient to thereby operate the device and form a the constriction of a passage of the patient's organ. Also disclosed is a method for laparascopically implanting the hydraulically operable implant together with the pump in a patient's abdomen.