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:
Jun. 13, 1995
Filed:
May. 28, 1993
Applicant:
Inventor:
Milton Frank, Riverdale, NY (US);
Assignee:
BEI Medical Sytems, Inc., Hackensack, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61M / ;
U.S. Cl.
CPC ...
604 26 ; 604 23 ;
Abstract
A device is provided for controlling flow and pressure of a gas for insufflating the abdomen during laparoscopic surgery. Compressed gas from a tank passes through the device and is stepped down through multiple stages to a pressure under 25 psi. The resultant average pressure is then reduced to a desired pressure by passing the gas through a solenoid valve and manifold in a pulsating manner. Pressure and flow are constantly monitored with signals being sent to a microprocessor which adjusts the pulse width of the gas supply to compensate for any changes in pressure.