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:
Oct. 22, 1991
Filed:
Feb. 04, 1991
Applicant:
Inventors:
Frederick L Coe, Santa Barbara, CA (US);
Edmund V Seder, Santa Barbara, CA (US);
Assignee:
Helix Medical, Inc., Santa Barbara, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61F / ;
U.S. Cl.
CPC ...
623-9 ; 12820716 ;
Abstract
A patient adjustable valve to control the flow of air through an opening surgically created in the neck of the patient. Two concentrically rotatable tubular parts form the outer body and the inner annular sealing surface of the valve. A disk shaped diaphragm proximate the sealing surface allows the free passage of air to the trachea for lower breathing pressures but flaps closed for the higher pressures that precede speech. The normally curled diaphragm is pushed to a flatter, easier to close, position by a cam on the inside of the outer body when the body is rotated relative to the sealing surface.