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. 14, 1981
Filed:
Sep. 07, 1979
Applicant:
Inventors:
Leonard D Kurtz, Woodmere, NY (US);
Robert E Bidwell, Long Island, NY (US);
Assignee:
BioResearch Inc., Farmingdale, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
128276 ;
Abstract
An underwater drainage apparatus is provided with an underwater seal formed by fluid from the pleural cavity of the patient. The dead air space within the underwater drainage apparatus is reduced to a minimum by dividing the collection chamber into a plurality of compartments and providing seals between the compartments which are dissolved when liquid from the preceding compartment reaches the dissolvable seal. A passageway is provided in the air space directly above the underwater seal chamber to connect to the outlet to suction and a one way valve is provided in this passageway.