Pressure-compensated fluid administering apparatus

Details Pressure-compensated fluid administering apparatus Pressure-compensated fluid administering apparatus

1991-01-23

1992-03-24

Hirsch, Paul J.

Surgery

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

Treating material introduced into or removed from body...

73747, A61M 100

Patent

active

050983849

ABSTRACT:
Patient pressure monitoring systems require constant monitoring and adjustment by patient care specialists because of erroneous indications of changes in blood pressure readings which occur is such systems. The changes are due to errors produced by the sensing system caused by patient movement with respect to the pressure sensor. Such erroneous changes are eliminated by the addition of a second fluid path which is maintained at atmospheric pressure and controllably is connected to the prime fluid path to normalize any change in pressure in the prime path due to changes in relative positions of the sensor and the patient.

REFERENCES:
patent: 2105127 (1938-01-01), Petroe
patent: 2600324 (1952-06-01), Rappaport
patent: 2615940 (1952-10-01), Williams
patent: 3611811 (1971-10-01), Lissau
patent: 4769001 (1988-09-01), Prince
patent: 4820265 (1989-04-01), DeSatmick et al.
patent: 4902277 (1990-02-01), Mathers et al.

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