Method and apparatus for determining pressure and detecting occl

Details Method and apparatus for determining pressure and detecting occl Method and apparatus for determining pressure and detecting occl

1992-09-23

1993-09-07

Weiss, John G.

Surgery

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

Treating material introduced into or removed from body...

604121, 604 67, A61M 100

Patent

active

052424081

ABSTRACT:
A syringe pump is disclosed in which the pressure in the syringe is monitored. The syringe pump includes a force detector which detects the force on the plunger of the syringe. The force on the plunger of the syringe is converted into a force by means of an algorithm which is independent of the cross-sectional area of the syringe. The algorithm calculates the pressure by subtracting a predetermined frictional force from the measurement force and multiplying the result by a calibration pressure divided by the difference between a calibration force and the predetermined frictional force.

REFERENCES:
patent: 4322201 (1982-03-01), Archibald
patent: 4460355 (1984-07-01), Layman
patent: 4747828 (1988-05-01), Tsco
patent: 4836752 (1989-06-01), Burkett
patent: 4898579 (1990-02-01), Groshoug et al.
patent: 5047012 (1991-09-01), Leuschner et al.

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