Insufflation apparatus

Details Insufflation apparatus Insufflation apparatus

1992-11-30

1994-07-12

Rosenbaum, C. Fred

Surgery

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

Gas application

604 26, 604 66, 604 67, 604 65, A61M 3700

Patent

active

053284585

ABSTRACT:
An insufflation apparatus intended to insufflate gas supplied from a gas supply source into a cavity of the human body through a gas insufflating pipe, comprising a switch valve for opening and closing a gas supply pipe extending from the gas supply source to the gas insufflating pipe, a cavity pressure measuring unit arranged in the gas supply pipe to measure the pressure in the body cavity, a pressure setting section for setting an intended pressure in the body cavity, an arithmetic unit for calculating the difference of a value measured by the cavity pressure measuring unit relative to the value of pressure set by the pressure setting section, and a changeover control unit for changing over the timings at which the switch valve is opened and closed on the basis of values thus calculated by the arithmetic unit.

REFERENCES:
patent: 3553625 (1971-01-01), Stedman
patent: 4023562 (1977-05-01), Hynecek et al.
patent: 4207887 (1980-06-01), Hiltebrandt et al.
patent: 4464169 (1984-08-01), Semm
patent: 4971034 (1990-11-01), Doi et al.
patent: 5152745 (1992-10-01), Steiner et al.
patent: 5209721 (1993-05-01), Wilk

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