초록 ▼

A portable light weight completely self-contained emergency single patient ventilator/resuscitating apparatus (10) usable at the scene of an emergency by persons with minimal training. The apparatus (10) includes a housing assembly (12) which supports a solid state oxygen generator which also acts a

A portable light weight completely self-contained emergency single patient ventilator/resuscitating apparatus (10) usable at the scene of an emergency by persons with minimal training. The apparatus (10) includes a housing assembly (12) which supports a solid state oxygen generator which also acts as a power supply, the generator being in the form of a chlorate candle (20). The housing additionally supports a pump (90) in the form of a venturi ejector, a two-position valve (92), and suitable primary controls (93) which are utilized to control the inspiratory:expiratory (I:E) ratio, the inspiratory time, the expiratory time, the breaths per minute, the flow rate, the tidal volume, the minute volume, etc. Various fluid passageways (54, 58, 116, 118) interconnect the candle with the valve, and additional fluid lines (120, 138, 140, 146, 148) interconnect the valve with the pump and primary controls. The primary controls include a fixed volume timing chamber (132) which is disposed about the venturi ejector. The housing is provided with a void (98) adjacent the timing chamber, which void acts as an accumulator during the expiratory cycle. While the two-position valve is normally automatically switched between inspiratory and expiratory positions by the pirmary control, it may be manually switched from its expiratory position to its inspiratory position against full pilot line pressure by a secondary control including a push button (152) or the like when the operator desire to give extra breaths or sigh breaths. In addition, the push button can be so positioned that the valve may be maintained in its inspiratory position, which may be desirable when the patient is breathing on his own and only requires extra oxygen over that which he would normally receive from ambient air.

대표청구항 ▼

A portable, light weight, completely self-contained emergency single patient ventilator/resuscitator apparatus capable of operating without attention in a resuscitating mode during operation of a power supply to cyclically force air and oxygen into a patient\s respiratory cavity during an inspirator

A portable, light weight, completely self-contained emergency single patient ventilator/resuscitator apparatus capable of operating without attention in a resuscitating mode during operation of a power supply to cyclically force air and oxygen into a patient\s respiratory cavity during an inspiratory mode and then to permit the patient\s respiratory cavity to expire during an expiratory mode; the apparatus comprising: a housing assembly, a portion of the housing assembly defining an accumulator open at first and second ends; a power supply carried by the housing assembly and having a discharge portion, the power supply being capable when in operation of discharging oxygen through the discharge portion over a period of time at a pressure sufficiently great to force oxygen into a patient\s lungs; pump means carried by the housing assembly, the pump means having a suction portion, a discharge portion and a driving portion, the pump means being capable of being operated when the driving portion is operatively interconnected to the discharge portion of the power supply when the power supply is in operation, the pump means when being operated causing ambient air to be drawn into the pump means through the accumulator and suction portion, the ambient air to be mixed with oxygen within the pump means, and the mixed air and oxygen to be discharged through the discharge portion; a two-position valve shiftable between inspiratory and expiratory positions and including an inlet port and first and second outlet ports, the valve when in the inspiratory position connecting the inlet port with the first outlet port, and the valve when in the expiratory position connecting the inlet port with the second outlet port; first line means extending from the discharge portion of the power supply to the inlet port of the two-position valve; further line means extending from the first and second outlet ports of the two-position valve to the driving portion of the pump means, the first end of the accumulator and to the suction portion of the pump; outlet tubing having one end portion connected to the discharge portion of the pump means, and another end portion being adapted to be interconnected to a patient whereby mixed air and oxygen may be delivered to the patient during inspiratory operation of the ventilator/resuscitator; and control means interconnected with the two-position valve and capable of shifting the two-position valve between inspiratory and expiratory positions.