Equipment for the controlled insufflation of a fluid into a body

Details Equipment for the controlled insufflation of a fluid into a body Equipment for the controlled insufflation of a fluid into a body

1990-03-14

1991-09-10

Pellegrino, Stephen C.

Surgery

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

Gas application

128747, 128748, A61M 3700

Patent

active

050470108

ABSTRACT:
Equipment is disclosed for the controlled insufflation of a fluid into a body cavity through a probe inserted thereinto, particularly for insufflating gas through the conduit of an endoscope partly inserted into the body cavity. The equipment comprises a supply device for delivering the fluid and on which a selected nominal value for the pressure in the body cavity can be set and the relevant actual value of the body cavity pressure can be displayed by means of a measuring instrument. The inlet side of a circulating pump, is connected by way of a filter to the body caviy. During an operation the pump draws off fluid from the body cavity and circulates it back to the body cavity. Part of the circuit on the delivery side of the pump and part of the circuit leading to the measuring instrument have a common portion leading to the body cavity. When the pump is running, therefore, a retroactive dynamic pressure is applied to the measuring instrument. The dynamic pressure is compensated for by a partial vacuum derived from the delivery flow of the pump.

REFERENCES:
patent: 3858572 (1975-01-01), Binard et al.
patent: 4464169 (1984-08-01), Semm
patent: 4538594 (1985-09-01), Boebel et al.
patent: 4676774 (1987-06-01), Semm et al.
patent: 4735603 (1988-04-01), Goodson et al.
patent: 4874362 (1989-10-01), Wiest et al.
patent: 4966578 (1990-10-01), Baier et al.

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