Vascular interface

Details Vascular interface Vascular interface

1977-09-06

1981-03-31

Michell, Robert W.

Surgery

Truss

Pad

128214R, A61B 500

Patent

active

042587174

ABSTRACT:
Apparatus for facilitating the performance of medical procedures involving the vascular system of a patient, especially in a critical care environment, such as withdrawal of blood for analysis and infusion of medication. In the taking of a blood sample, blood flows through an arterial catheter connected to an artery of the patient, past a sample station, and then through a venous catheter that brings the blood back to the patient, the various mechanisms being connected by transparent plastic tubes. After a sample is taken, the tubes are flushed through the sample station, arterial catheter, and the venous catheter. Calibration of all pressure transducers requires application of high and low pressures to them, the high pressure being obtained by applying a high pressure (e.g. 200 mm Hg) to a bottle of saline solution which is also utilized to flush the tubes and which is connected to all of the transducers.

REFERENCES:
patent: 2589728 (1952-03-01), Pratt
patent: 2854027 (1958-09-01), Kaiser et al.
patent: 3276472 (1966-10-01), Jinkins et al.
patent: 3838682 (1974-10-01), Clark et al.
patent: 4014328 (1977-03-01), Cluff et al.
"Development of Automated Systems for Critical Care Units", Univ. of S. California, School of Med., DuBois, 1-8-75.
"Calibration of Gages", Chem. Engr. Handbook, McGraw Hill, Perry & Chilton, pp. 5-6 and 5-7.

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