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:
Dec. 02, 1997
Filed:
Nov. 21, 1996
Walter F Leise, Jr, Lindenhurst, IL (US);
Michael A Metz, Chicago, IL (US);
James J Passalaqua, Paddock Lake, WI (US);
Hollister Incorporated, Libertyville, IL (US);
Abstract
An ostomy pouch is disclosed in which a flexible, shape-recoverable plastic dome is secured internally to a wall of the pouch over a vent opening. A peripheral portion of the dome spaced from the apex is provided with at least one slit therethrough traversing a radially and axially extending plane of the dome. The slit is curved or arched towards the apex and defines outer and inner lips that normally have their opposing edges in juxtaposition to restrain the escape of gases from the pouch but permit such escape in quantity when the apical portion of the dome is depressed (by axially squeezing the dome). The lips advantageously have beveled opposing surfaces with the surface of the outer lip generally facing towards the vent opening and that of the inner lip generally facing away from the vent opening. A stop element projects from the apical portion within the dome and is engagable with a deodorizing gas filter located at the base of the dome to limit the extent of deformation of the dome, and to prevent occlusion of the filter by the reverted apical portion of the dome, when the dome is pressed inwardly to open the valve.