Apparatus and process for injection of a gas

Details Apparatus and process for injection of a gas Apparatus and process for injection of a gas

1993-03-29

1995-06-27

Smith, Ruth S.

Surgery

Truss

Pad

12820425, A61B 600

Patent

active

054271045

ABSTRACT:
Apparatus and process for injection of a gas, preferably carbon dioxide, comprising a source of the gas connected to at least two conduits (C) each provided with a control valve (EV) and a control (Q) of the gaseous flow rate. All of the conduits (C) open into a single channel (B), provided with a three-way control valve (V). The control (Q) of the gaseous flow rate is a calibrated orifice. The control valve (EV) and three-way control valve (V) are electrovalves. The channel (B) is connected to a catheter for injection of the gas into a body. The controls (Q) each permit a different flow rate through the associated control valve (EV), whereby a range of total flow rates of gas into the channel can be achieved by opening and closing selected ones of the controls.

REFERENCES:
patent: 3991790 (1976-11-01), Russell
patent: 4072148 (1978-02-01), Munson et al.
patent: 4278110 (1981-07-01), Price et al.
patent: 4793358 (1988-12-01), Kimura et al.
patent: 4991616 (1991-02-01), Fabregat
patent: 5086767 (1992-02-01), Legal

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