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:
May. 28, 1991
Filed:
Dec. 14, 1989
Applicant:
Inventor:
Edmund D D'Silva, Highland Park, IL (US);
Assignee:
Baxter International Inc., Deerfield, IL (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ;
U.S. Cl.
CPC ...
417 12 ; 417 45 ; 417 53 ; 417474 ; 604153 ;
Abstract
A method and device are provided for infusing a fluid into a patient via a tubing. A peristaltic pumping apparatus is provided which applies a pumping action to the tubing. A linear variable differential transformer measures the diameter of the tubing subject to the pumping action. The diameter of the tubing is measured at various times and changes in the diameter of the tubing are utilized to adjust the pumping action on the tubing.