Apparatus and method for the insufflation of gas into a body cav

Details Apparatus and method for the insufflation of gas into a body cav Apparatus and method for the insufflation of gas into a body cav

1993-05-28

1995-06-13

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Gas application

604 23, A61M 1300

Patent

active

054237416

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.

REFERENCES:
patent: 3982533 (1976-09-01), Wiest
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patent: 4215681 (1980-08-01), Zalkin et al.
patent: 4676774 (1987-06-01), Semm et al.
patent: 4966578 (1990-10-01), Baier et al.
patent: 5013294 (1991-05-01), Baier
patent: 5152745 (1992-10-01), Steiner et al.

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