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:
Nov. 03, 1998
Filed:
Sep. 20, 1996
Azam Anwar, Dallas, TX (US);
Christopher M Boykin, Henderson, TX (US);
Other;
Abstract
A power syringe (10) for use in medical procedures, such as angiography, delivers air or fluid, such as contrast medium, to a patient at operator controlled rates and pressures. In one embodiment, mechanical advantage is created by first and second arms (22, 26) which are interconnected with each other, the base, and the plunger (20). The proximal end of the syringe contains a track (44) that the plunger follows in normal fashion in and out of the reservoir. The track is bevelled from proximal to distal end to create a path with variable resistance. A mechanical stop (42) is at the proximal end of the track to control the length of travel of plunger and secondary mechanical arm. Markings (18) on reservoir (12) indicate the volume of fluid or air in the reservoir. Mechanical arm length, tracking length, and distance to plunger stop will vary with size of syringe to generate appropriate flow and power.