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:
Mar. 27, 1990
Filed:
Aug. 02, 1988
Applicant:
Inventor:
Michael J Kerwin, Ballwin, MO (US);
Assignee:
Sherwood Medical Company, St. Louis, MO (US);
Primary Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604318 ; 604319 ; 604321 ; 137205 ;
Abstract
A chest drainage unit having a suction regulator in fluid communication with the suction control chamber for regulating the suction pressure applied to the pleural cavity of the patient wherein the suction regulator includes a valve device which provides a continuous amount of fluid communication between the atmosphere and the suction source in the normally closed position and being movable to an open position in response to the increased negative pressure to allow an increase in the amount of fluid communication between the atmosphere and the suction source.