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:
Jan. 10, 1984
Filed:
Nov. 30, 1981
Francesco Di Salvo, Como, IT;
Sis-Ter S.p.A., Pignano, IT;
Abstract
To provide for controlled application of parenteral fluid to a patient, in which the fluid is supplied from a flexible bag which changes its volume as the fluid is withdrawn therefrom, a liquid flow control device (2) has a membrane which, intermittently closes off and opens flow communication from beneath a dripping tube (1a) and a cannula (8) applying the liquid to the patient, the side of the membrane remote from its control side being connected by a capillary tube (15) to the interior of the dripping tube to equalize the pressure changes occurring on both sides of the membrane as the liquid level in the supply vessel decreases. The flow rate is initially adjusted by lowering the level of the liquid stabilization device with respect to the level of the dripping chamber.