US3794026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilating apparatus embodying selective volume or pressure operation and catheter means for use therewith
Assignee: Individual
•
Filing: 1972-08-03
•
Granted: 1974-02-26
•
Expires: 1992-08-03
Abstract
Abstract A ventilating and resuscitator system for emergency and nonemergency uses which provides selective pressure or volume modes of operation. The control of flow of inflating pressurized gas, under pressures between 20 and 100 psi, is subject to either manual control or automatic control wherein the automatic control takes over ventilation or is responsive to the conditions of the patient. In the automatic mode, pressure responsive means such as pressure switches, which are responsive to the minimum or negative maximum as well as positive pressure variations in the thoracic intrapulmonary region, are utilized to program and control the inflation and deflation cycles. In addition, alarm means are provided to warn the attending personnel of patient failure, and to automatically secure a flow of breathing gas to the patient, overriding other control means. There is also provided means whereby, at desired intervals, the patient obtains ventilation effects equivalent to ''''sigh'''' type inhale and exhale cycles. The arrangement further provides a triple lumen catheter, preferably of total diameter of 0.5 to 2.0 millimeters, a flow line connected to each lumen, a pressure monitoring line and a valving system interconnecting the two minor flow lines and the pressure monitoring line whereby each minor flow line is alternately and cyclically connected to the pressure monitoring line. This arrangement maintains the pressure monitoring line free of mucous and other body secretions. While the invention is preferably practiced with a new triple lumen catheter means, other catheter means may be used. A novel inserter for the triple lumen catheter is also disclosed.
Inventors
- 👤 H Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:07
CPC Classifications
A; A61; A61M; A61M25/00; A61M25/01; A61M25/06; A61M25/0662; A61M25/0668; A61M16/00; A61M16/0003; A61M16/0009; A61M16/0051; A61M16/04; A61M16/0434; A61M16/045; A61M16/0452; A61M16/0465; A61M16/0475; A61M16/0477; A61M16/0479; A61M16/0484; A61M16/0486; A61M16/10; A61M16/14; A61M16/16; A61M25/0067; A61M25/0068; A61M25/007; A61M25/02; A61M25/04; A61M25/0606; A61M16/0472; A61M16/0488; A61M16/049; A61M16/0493; A61M2016/0027; A61M25/0021; A61M25/0023; A61M25/0026; A61M2025/004; A61M2025/0073; A61M25/0082
Claims Analysis
Total Claims: 32
Claim 1
Independent Claim
144 words
A ventilating system comprising: a first conduit for conducting breathing gas; triple lumen catheter means having two pressure-sensing lumens adapted to be inserted into a body cavity; second and third conduits connecting said first conduit to one and the other lumens, respectively; a pressure monitor line including sensing means for monitoring the pressure condtions in the body cavity; and cyclically actuated valve means including operating means therefor for inter-connecting said first conduit with said second conduit and said third conduit with said pressure monitor line for one cycle, and thereafter interconnecting said first conduit with said third conduit and said second conduit with said pressure monitor line for the following cycle, whereby each of the second and third conduits serve cyclically and alternately as a breathing gas carrying conduit and as a pressure monitoring conduit to thereby maintain the conduits free of body secretions.
Claim 2
Dependent Claim
144 words
A ventilating system comprising: a first conduit for conducting breathing gas; triple lumen catheter means having two pressure-sensing lumens adapted to be inserted into a body cavity; second and third conduits connecting said first conduit to one and the other lumens, respectively; a pressure monitor line including sensing means for monitoring the pressure condtions in the body cavity; and cyclically actuated valve means including operating means therefor for inter-connecting said first conduit with said second conduit and said third conduit with said pressure monitor line for one cycle, and thereafter interconnecting said first conduit with said third conduit and said second conduit with said pressure monitor line for the following cycle, whereby each of the second and third conduits serve cyclically and alternately as a breathing gas carrying conduit and as a pressure monitoring conduit to thereby maintain the conduits free of body secretions.
Claim 3
Dependent Claim
57 words
A ventilating system as claimed in claim 1, wherein the ventilating system comprises a source of pressurized breathing gas and a source of gas under low pressure, including sub-atmospheric pressure cyclically operated inflate and deflate valves connecting said sources of gas sequentially and alternately to an outlet conduit, said outlet conduit being connected to said first conduit.
Claim 4
Dependent Claim
46 words
A ventilating system as claimed in claim 2, wherein a catheter control valve is provided which in one position connects said outlet conduit to the first conduit, and in a second position connects said outlet to conduit to a conduit leading to a single lumen catheter.
Claim 5
Dependent Claim
27 words
A ventilating system as claimed in claim 2, wherein a single motor means is provided to cyclically drive the deflate and inflate valves and the valve means.
Claim 6
Dependent Claim
61 words
A ventilating system as claimed in claim 4, wherein control means are provided to energize said motor means, said control means being in a normal state wherein the motor means is not energized, and pressure responsive means responsive to a predetermined low pressure in the pressure monitor line to change the state of the control means to energize said motor means.
Claim 7
Dependent Claim
67 words
A ventilating system as claimed in claim 5, wherein said motor means comprises an air motor having a supply line, and said control means comprises a normally closed, supply valve in said supply line, means for opening said valve to permit the operation of the motor, and connecting means for iNterconnecting said pressure responsive means to said opening means to control the operation of said opening means.
Claim 8
Dependent Claim
19 words
A ventilating system as claimed in claim 5, wherein said pressure responsive means is a low pressure responsive switch.
Claim 9
Dependent Claim
40 words
A ventilating system as claimed in claim 6, wherein said pressure responsive means is a low pressure, normally open switch, and responds to said predetermined low pressure to close and thereby energize said opening means to open said supply valve.
Claim 10
Dependent Claim
27 words
A ventilating system as claimed in claim 8, wherein a manually controlled override switch is provided in parallel with said pressure responsive switch to open said valve.
Claim 11
Dependent Claim
51 words
A ventilating system as claimed in claim 8, wherein said connecting means comprises conductor means, periodically operated means for opening said conductor means for a predetermined interval, and flow responsive means responsive to a predetermined low or no flow in said first conduit for closing said conductor means during said interval.
Claim 12
Dependent Claim
74 words
A ventilating system as claimed in claim 10, wherein said periodically operated means comprises cooperating fixed and movable contact means intermediate said conductor means, said fixed contact means having adjustable spaced portions to form an opening in the conductor means, and said movable contact means being driven by a timing means, and wherein said flow responsive means controls the operation of a switch means to bridge said opening upon a predetermined drop in flow.
Claim 13
Dependent Claim
79 words
A ventilating system as claimed in claim 11 wherein said flow responsive means comprises a first normally open switch which is closed upon full flow to cause movement of said bridging switch means to non-bridging position, and a second normally open switch which is closed in response to full flow, and wherein said system further includes second conductor means connecting said second switch to the first conductor means between the low pressure responsive switch and the periodically operated means.
Claim 14
Dependent Claim
57 words
A ventilating system as claimed in claim 12, wherein a first high pressure switch is connected to the pressure monitor line and is responsive to a predetermined high pressure in said line, and a third conductor means connecting said high pressure switch to said first conductor means between said periodically operated device and said valve opening means.
Claim 15
Dependent Claim
36 words
A ventilating system as claimed in claim 1, wherein the ventilating system comprises a source of pressurized gas, a fourth conduit connecting said source and said first conduit, and pressure regulating means in said fourth conduit.
Claim 16
Dependent Claim
39 words
A ventilating system as claimed in claim 14, wherein said conduit includes a plurality of parallel branches, a pressure regulating valve in each branch and a selector valve for selectively connecting any of said branches to the first conduit.
Claim 17
Dependent Claim
40 words
A ventilating system as claimed in claim 14, including first motor means for cyclically operating said valve means, and first control means responsive to pressure variations in said pressure monitor lines for controlling the energization of said first motor means.
Claim 18
Dependent Claim
58 words
A ventilating system as claimed in claim 16, wherein a cut-off valve is provided in the third conduit upstream of said valve means, second motor means to actuate said cut-off valve to an open or closed position and second control means responsive to pressure variations in said pressure monitor line for controlling the energization of said motor means.
Claim 19
Dependent Claim
39 words
A ventilating system as claimed in claim 17, wherein said first and second motor means are electrical motor means, and the first and second control means are pressure operated switches responsive to pressure existing in the pressure monitor line.
Claim 20
Dependent Claim
46 words
A ventilating system as claimed in claim 18, wherein the first control mean comprises a first low pressure responsive switch and first conductor means connecting said switch to said first motor means to energize the same and actuate said valve means to a sequential cyclic position.
Claim 21
Dependent Claim
89 words
A ventilating system as claimed in claim 19, wherein the second control means comprise a second low pressure switch and a high pressure switch, second conductor means connecting said second low pressure switch to said second motor means, third conductor means connecting said high pressure switch to said second motor means, said second motor means opening said cut-off valve when said second low pressure switch closes in response to a predetermined low pressure, and clsoing the cut-off valve when the high pressure switch responds to a predetermined high pressure.
Claim 22
Dependent Claim
75 words
A ventilating system as claimed in claim 20, wherein a sigh pressure switch is provided which is responsive to a higher pressure in the pressure monitor line than that preset pressure to which the high pressure switch responds, and a timer selector device is inserted in said third conductor to connect either the high pressure switch or sigh pressure switch to the third conductor to energize said second motor means to close the cutoff valve.
Claim 23
Dependent Claim
47 words
A ventilating system as claimed in claim 20, wherein a third low pressure-responsive switch is provided, together with alarm means and fourth conductor means, said fourth conductor means connecting said third low pressure switch and said alarm to activate the alarm upon reaching a predetermined low pressure.
Claim 24
Dependent Claim
31 words
A ventilating system as claimed in claim 22, wherein a delay relay is provided in said fourth conductor means to delay the energization of the alarm for an adjustable time interval.
Claim 25
Dependent Claim
67 words
A ventilating system as claimed in claim 22, wherein a timer selector device and a fifth conductor means are provided to be energized by said alarm, said timer selector device alternately and sequentially connecting said fifth conductor means to said first conductor means and said second conductor means, whereby said first motor means cyclically operates said valve means and said second motor means opens said cutoff valve.
Claim 26
Dependent Claim
55 words
A ventilating system as claimed in claim 17, wherein a bypass line is provided around said cutoff valve, shut-off valve means in said bypass being arranged to close the bypass when said cutoff valve is in open position, said cutoff valve and shutoff valve means being arranged for joint actuation by said second motor means.
Claim 27
Dependent Claim
18 words
A ventilating system as claimed in claim 17, wherein an adjustable throttle valve is provided in said bypass.
Claim 28
Dependent Claim
76 words
A ventilating system as claimed in claim 8, further including a second low pressure switch which is closed in response to a predetermined low pressure in the pressure monitor line, a delay relay connected to said switch to be energized thereby upon closure, and a switch means connected to said delay relay and to said opening means to be energized by said relay after a delay, thereby energizing the opening means to open the supply valve.
Claim 29
Dependent Claim
83 words
A ventilating system as claimed in claim 1, further including a three-way valve in a conduit which is connected to a lumen of the triple lumen catheter means downstream of said cyclically actuated valve means, a source of pressurized breathing gas, a pipe connecting said source to said three-way valve, and an adjustable throttle valve in said pipe upstream of said three-way valve, the three-way valve thereby connecting said lumen to either said cyclically actuated valve means or to said pressurized gas source.
Claim 30
Dependent Claim
39 words
A ventilating system as claimed in claim 28, further including a cut-off valve which is provided in said pipe upstream of said adjustable throttle valve, and means connecting said cut-off valve and said three-way valve for joint cooperative movements.
Claim 31
Dependent Claim
55 words
A ventilating system as claimed in claim 29, including a pipe means which interconnects said pressurized gas source, a shut-off valve and a pressure regulator valve, said valves being serially arranged in said pipe line for selectively increasing the pressure in the low pressure source in accordance with the setting of the pressure regulating valve.
Claim 32
Dependent Claim
44 words
A ventilating system as claimed in claim 1, including a nebulizer fitted with quick-attaching valves, fluid level control means and a reservoir for administering medication with nebulized water vapor for passage to and through a catheter inserted into the respiratory system of 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) | 1977-02-25 | 1977-08-27 | 1978-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-25 | 1981-08-27 | 1982-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-25 | 1985-08-27 | 1986-02-26 | $7700.00 | Window Closed / Lapsed |