[특허]Ventilator and oscillator for use therewith and method

[미국특허] Ventilator and oscillator for use therewith and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-016/00 A62B-007/00 A62B-009/02
출원번호	US-0764998 (1991-09-24)
발명자 / 주소	Bird Forrest M. (P.O. Box 817 Sandpoint ID 83864)
인용정보	피인용 횟수 : 99 인용 특허 : 0

초록 ▼

A ventilator in combination with a pneumatic oscillator cartridge comprising a body with an inlet, an outlet, a diaphragm operated valve, and a servo port. An adjustable valve is provided for metering the flow of gas from the outlet to the servo port to provide cyclic operation of the oscillator cartridge. A pneumatic clutching assembly is provided which has an inlet and an outlet. The outlet of the oscillator cartridge is connected to the inlet of the pneumatic clutching assembly. An oscillator canister is provided which has an inlet and an outlet. The outlet of the pneumatic clutching means is coupled to the inlet of the oscillator canister. The oscillator canister has a shaft, a diaphragm mounted on the shaft and separating the canister into first and second chambers. Countersprings are mounted on the shaft. The oscillator canister serves to supply and withdraw small volumes of gas to and from the patient adaptor. The small volumes of gas are superimposed upon the continuous flow of gas to the patient adaptor whereby dynamic volumetric diffusive ventilation is supplied to the patient.

대표청구항 ▼

In a method for ventilating the airway of a patient from a source of gas under pressure comprising the steps of providing a canister having an inlet adapted to be coupled to the source of gas an outlet adapted to be coupled to the airway of the patient, providing a diaphragm in the canister having a central portion and a outer annular convoluted portion to provide a servoing chamber and a percussion chamber on opposite sides of the diaphragm, providing first and second countersprings respectively in the servoing chamber and percussion chamber on opposite sides of the central portion of the diaphragm, supplying gas from the source of gas under pressure to the servoing chamber to provide a pneumatic force to cause movement of the convoluted portion of the diaphragm in a first direction followed by the central portion of the diaphragm against the force of the second counterspring until a centered position is achieved, depressurizing the servoing chamber to cause motion of the convoluted portion of the diaphragm in a second direction followed by the central portion of the diaphragm against the force of the first counterspring until a centered position is achieved and thereby supplying a plurality of small volumes of gas with rapid changes in pressure to the airway of the patient during each inspiratory phase, and withdrawing a plurality of small volumes of gas with rapid changes in pressure from the airway of the patient during each expiratory phase whereby dynamic diffusive ventilation is supplied to the airway of the patient.

이 특허를 인용한 특허 (99) 인용/피인용 타임라인 분석

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[미국특허] Ventilator and oscillator for use therewith and method 원문보기

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