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:
May. 11, 2004
Filed:
Apr. 13, 2001
Steven R. Christenson, Coon Rapids, MN (US);
James Randall, Coon Rapids, MN (US);
Micheal Thomas Hegland, Mounds View, MN (US);
James M. Haase, Blaine, MN (US);
Mark S. Lent, Brooklyn Park, MN (US);
William H. Monsen, Rochester, MN (US);
Medtronic, Inc., Minneapolis, MN (US);
Abstract
An implantable drug infusion device includes a pump tube for holding a liquid to be pumped. A race is configured to support the pump tube. A roller assembly is configured to compress the tube against the race at one or more points along the path, and the roller assembly includes at least one roller. A drive assembly drives the roller assembly relative to the tube along the path so as to move the liquid through the tube. At least two biasing members are operably connected to the roller to bias the roller against the tube, the two biasing members forming an angle.