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:
Jul. 14, 2009
Filed:
Sep. 30, 2004
Daniel J. Mccusker, Bridgewater, MA (US);
Alan J. Dextradeur, Franklin, MA (US);
Daniel J. McCusker, Bridgewater, MA (US);
Alan J. Dextradeur, Franklin, MA (US);
Codman & Shurtleff, Inc., Raynham, MA (US);
Abstract
A valve for use in a shunt system to drain fluid from one part of a patient's body to another is provided. In an exemplary embodiment, the valve is operable at a threshold pressure that is selectively adjustable up to at least about 400 mm HO at increments in the range of about 10 mm HO to 40 mm HO. The ability of the valve to operate at a high threshold pressure and to be adjusted at relatively small increments renders the valve particularly advantageous for use in younger hydrocephalus patients. In particular, the operating pressure of the valve can be gradually limited in small increments over a period of time to slowly force the patient's own resorption system to circulate cerebrospinal fluid. At high operating pressures of at least about 400 mm HO shunt independence can be achieved thereby allowing the shunt to be successfully removed.