Patent US3766914A successfully refreshed from Google Patents.
US3766914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High pressure resuscitating and ventilating system incorporating humidifying means for the breathing mixture
Assignee: Individual
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Filing: 1971-07-15
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Granted: 1973-10-23
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Expires: 1991-07-15
Abstract
Abstract A resuscitating and ventilating system is provided wherein a relatively high pressure breathing gas mixture is utilized. The flow of the breathing mixture is cyclically controlled by inflating and deflating valve means, which valve means is actuated by an air motor driven by the high pressure gas. A high pressure piping system connects the source of high pressure gas to the valve means and to the gas supply pipe of the motor. A gas-bubbling-through-water type humidifier is incorporated in the system. The gas inlet of the humidifier tank is connected to the high pressure piping system upstream of its connection to the gas supply pipe of the motor, and the outlet pipe of the humidifier tank is connected to the high pressure piping downstream of its connection to the gas supply pipe of the motor. Thus, the humidifying system bypasses the motor. Further, a water supply is connected to the humidifying tank and the connections are so controlled by valves whereby the water in the tank may be replenished without shutting off the flow of the breathing mixture to the patient.
Inventors
- 👤 H Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:50
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/02; A61M25/04; A61M16/00; A61M16/0003; A61M16/0009; A61M16/04; A61M16/0434; A61M16/045; A61M16/0452; A61M16/0465; A61M16/10; A61M16/14; A61M16/16; A61M25/06; A61M25/0662; A61M25/0668; A61M16/0472
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
286 words
A ventilating apparatus comprising a source of high pressure breathing gas, inflating and deflating valve means, first pipe means connecting said source of breathing gas to said inflating valves means, output pipe means connected to said valve means for delivering breathable gas from the inflate valve means to the patient and for returning the exhalation from the patient to the deflate valve means, air motor means operatively connected to said inflate and deflate valve means to cyclically actuate the same, a pressure gas supply line connecting said first pipe means to said air motor, high pressure humidifying means between said breathing source and said inflating and deflating valve means comprising a tank having water therein, an inlet gas pipe fed with high pressure breathing gas opening below the water level to permit a heat exchanger, a condenser which removes liquid water from said highly humidified vapor in said outlet and thereby prevent flooding, a heater to maintain a high temperature in the liquid so as to assure a supply of highly humidified air at high pressure in the tank outlet pipe without trapped water therein, gas flowing through the inlet pipe to bubble through the water and thereby become highly humidified, a tank outlet pipe to permit the humidified gas to flow out of the tank, a second pipe means connecting said inlet pipe to said first pipe means upstream of said pressure gas supply line, and a third pipe means connecting said tank outlet pipe to said first pipe means downstream of said pressure gas supply line, whereby the air motor is bypassed by the humidified air flow, which prevents the loss of water at the interior from the humidified gas going to the patient.
Claim 2
Dependent Claim
286 words
A ventilating apparatus comprising a source of high pressure breathing gas, inflating and deflating valve means, first pipe means connecting said source of breathing gas to said inflating valves means, output pipe means connected to said valve means for delivering breathable gas from the inflate valve means to the patient and for returning the exhalation from the patient to the deflate valve means, air motor means operatively connected to said inflate and deflate valve means to cyclically actuate the same, a pressure gas supply line connecting said first pipe means to said air motor, high pressure humidifying means between said breathing source and said inflating and deflating valve means comprising a tank having water therein, an inlet gas pipe fed with high pressure breathing gas opening below the water level to permit a heat exchanger, a condenser which removes liquid water from said highly humidified vapor in said outlet and thereby prevent flooding, a heater to maintain a high temperature in the liquid so as to assure a supply of highly humidified air at high pressure in the tank outlet pipe without trapped water therein, gas flowing through the inlet pipe to bubble through the water and thereby become highly humidified, a tank outlet pipe to permit the humidified gas to flow out of the tank, a second pipe means connecting said inlet pipe to said first pipe means upstream of said pressure gas supply line, and a third pipe means connecting said tank outlet pipe to said first pipe means downstream of said pressure gas supply line, whereby the air motor is bypassed by the humidified air flow, which prevents the loss of water at the interior from the humidified gas going to the patient.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |