Device for controlling the pressure of a fluid and injection sys

Details Device for controlling the pressure of a fluid and injection sys Device for controlling the pressure of a fluid and injection sys

1988-02-25

1989-07-18

Wayner, William E.

Surgery

Respiratory method or device

Means for supplying respiratory gas under positive pressure

12820426, 12820428, 73705, A61M 1600

Patent

active

048483320

ABSTRACT:
The control device is applicable in particular in the control of the injection of oxygen in the course of an oxygen treatment through a nasal mask. The device comprises a sealed chamber (5) in which are disposed, on one hand, a very pliable bladder (6) one side of which is subjected to atmospheric pressure while the other side is subjected to the depression which must be detected, and, on the other hand, an opto-electronic sensor (7), the bladder being connected to a movable screen (9) capable of intercepting or not intercepting, depending on the state of the bladder (6) and consequently of the depression to be detected, the light beam between the light beam emitter and the receiver of the opto-electronic sensor (7).

REFERENCES:
patent: 2223705 (1940-12-01), Roudnicky
patent: 3137158 (1964-06-01), Krueger
patent: 3502892 (1970-03-01), Brittain
patent: 3831596 (1974-08-01), Cavallo
patent: 4289963 (1981-09-01), Everett
patent: 4599902 (1986-07-01), Gray

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