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. 19, 1994
Filed:
May. 15, 1991
Eric R Cosman, Belmont, MA (US);
Michael A Arnold, Woburn, MA (US);
Other;
Abstract
This invention relates to a CSF shunting system that can be used in the human body for the control of hydrocephalus or excess cerebrospinal fluid (CSF) in the ventricles of the brain. The invention relates to the configuration of a fluid pressure controlling diaphragm which has a substantially planar, non-arched, or slightly convex occluding surface that contacts as its valve mechanism a non-planar opposing surface. The diaphragm element can be made out of silicone rubber or some other flexible material, and the opposing surface can be made from a dissimilar material from the diaphragm element to prevent sticking. The invention also relates to the configuration of this substantially flat diaphragm element, its central stem, and its mounting in a frame so as to facilitate pre-loads, calibrations, and optical, as well as mechanical, tests for quality assurance. The invention further relates to a confirmation of this pressure control invention in a larger shunt body geometry, which provides for modular, distal, and occlusion elements, and articulating shape to better fit the contour of a patient's skull.