IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0784393
(1991-12-31)
|
우선권정보 |
GB-0000371 (1990-01-08) |
국제출원번호 |
PCT/GB91/00019
(1991-01-07)
|
§371/§102 date |
19911231
(19911231)
|
국제공개번호 |
WO-9110463
(1991-07-25)
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발명자
/ 주소 |
- Dearman Peter T. (Bishop\s Stortford GBX) Smith Richard (Braintree GBX)
|
출원인 / 주소 |
- Neotronics Medical Limited (Bishop\s Stortford GBX 03)
|
인용정보 |
피인용 횟수 :
13 인용 특허 :
0 |
초록
▼
A breathing apparatus is described for supplying pulses of a breathable gas to a patient; the apparatus comprises a gas inlet (10) connectable to a source of breathable gas, an outlet (37) connectable to provide gas to the patient, a gas flow passage (14,15,34,36) extending between the inlet and the
A breathing apparatus is described for supplying pulses of a breathable gas to a patient; the apparatus comprises a gas inlet (10) connectable to a source of breathable gas, an outlet (37) connectable to provide gas to the patient, a gas flow passage (14,15,34,36) extending between the inlet and the outlet, a main valve (16) located in the gas flow passage for interrupting the flow of gas to the outlet, a throttle (38) in the flow passage downstream of the main valve, a gas reservoir (42) and a valved duct (40,44) connected to supply gas to the reservoir from the part of the flow passage between the main valve and the throttle; the main valve includes a piston (24) that is slidable within a cylinder (22) to open and close the gas flow passage, which piston is biassed in one direction by a resilient member (28) and biassed in the other direction by the gas pressure within the reservoir. When the main valve is open and gas flows from the source to the patient, gas leaks into the reservoir along valved duct (40,44), thereby increasing the pressure in the reservoir (42); this continues until the pressure in the reservoir is sufficient to overcome the spring (28) when the piston moves to close off the gas flow passage. Gas can leak via the valved duct (40, 44) into the flow passage until the pressure in the reservoir falls to a level that allows the spring to move the piston to re-open the flow passage.
대표청구항
▼
A breathing apparatus for supplying pulses of a breathable gas to a patient, which apparatus comprises a gas inlet (10), an outlet (37) connectable to provide gas to the patient, a gas flow passage (14, 15, 34, 36) extending between the gas inlet and the outlet, a main valve (16) located in the gas
A breathing apparatus for supplying pulses of a breathable gas to a patient, which apparatus comprises a gas inlet (10), an outlet (37) connectable to provide gas to the patient, a gas flow passage (14, 15, 34, 36) extending between the gas inlet and the outlet, a main valve (16) located in the gas flow passage, and means to operate said main valve to selectively interrupt the flow of gas to the outlet, a throttle (38) in the flow passage downstream of the main valve, a gas reservoir (42) and a valved duct (40, 44) connected to supply gas to the reservoir from a part of the flow passage between the main valve and the throttle, said valved duct having a passageway therein, wherein the main valve includes a piston (24) and a cylinder (22), said piston slidable within said cylinder (22) to open and close the gas flow passage, said means to operate including a resilient member (28) biasing the piston in one direction, further comprising a reservoir passageway connecting said reservoir to said main valve such that gas pressure within the reservoir biases the piston in a direction opposite said one direction, and wherein in use: when the main valve is open, gas flows into the reservoir from the gas flow passage via the passageway in the valved duct; and when the flow of gas in the gas flow passage is interrupted by closing of said main valve, gas in the reservoir bleeds out of the reservoir via the passageway in the valved duct.
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