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:
Sep. 05, 1978
Filed:
Jun. 02, 1977
Alvin J Marx, Bronx, NY (US);
Abraham Edelman, New York, NY (US);
Other;
Abstract
Automated intravenous fluid dispensing apparatus regulating intravenously administered electrolyte solution, nutrient or other fluid flow employs a bidirectionally motor-driven clamp for selectively constricting a fluid passing conduit, typically a tube. The apparatus employs a relaxation oscillator, or timing circuit, having a variable period dependent upon whether fluid is being administered at a specified rate, or too rapidly or too slowly. When either of the latter two conditions obtain, the tube pinch-off motor is excited in an appropriate corrective direction to cause the desired fluid flow rate. In accordance with varying aspects of the present invention, motor and timing circuit modulation (i.e., speed of system correction response) varies for excess/deficient flow rate conditions depending upon the specified flow rate and upon the constrictive state of the fluid delivery tubing. Also, audio/visual alarming is provided for defined conditions.