CN1058413C

CN1058413C - Miniature respirator

Info

Publication number: CN1058413C
Application number: CN 93111519
Authority: CN
Inventors: 朱兴中
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-05-27
Filing date: 1993-05-27
Publication date: 2000-11-15
Anticipated expiration: 2013-05-27
Also published as: CN1094968A

Abstract

The present invention relates to a miniature respirator which is especially matched with an inhalation general anesthesia apparatus and is used in the first-aid operation for patients with serious diseases. The miniature respirator comprises an air container, a frequency regulator, Not-gate, a transition block, Yes-gate, a flow regulator, a base, a manually-controlled respiration switch, an atomizer, a respiration valve, etc. With the advantages of small size, light weight, practical and reliable use, simple structure and low prices, the miniature respirator has functions in the first-aid operation for patients with serious diseases. The miniature respirator can be used for low-frequency, normal-frequency and high-frequency ventilation and can be controlled pneumatically or manually. The miniature respirator is suitable for respiration management during anesthesia and also suitable for general first aid in situ to enhance first-aid success rate.

Description

Miniature respirator

The present invention proposes a kind of special-purpose respirator of implementing supporting imbedibility general anesthesia machine and first aid respiratory failure critical patient, belongs to field of medical.

The respirator of existing in the world anesthesia usefulness all has bell jar, folding fan (or rubber tube) and pneumatic control structure, so complex structure, bulky, cost an arm and a leg, be not suitable for on-the-spot generally rescue, the objective of the invention is to reality according to China's national situation and rescue critical patient, a kind of pneumatic gas-control formula, small-sized light and handy, maneuverability are proposed, reliable and practical respirator.Can solve clinical respiratory failure or respiratory arrest patient's first aid, not be only applicable to the breathing management in the anesthesia surgery, and when being applicable to on-the-spot generally rescue and zoopery to the needs of respirator application.

Technical scheme of the present invention is, this respirator mainly by air-capacitor 1, frequency regulator 2, not gate 3, transition block 4, be that door 5, flow regulator 6 and base 7 are formed, base 7 is positioned at the bottom of respirator, is provided with two input hole P ₀, P ₁With a delivery outlet PS, the flow regulator 6 that changes the gas channel circulation area is positioned at the top of base 7, the air-capacitor 1 of regulating inspiration expiration ratio is located at the top of respirator, frequency regulator 2 air-capacitor 1 inflation for a change, the throttle governor of deflated time length is located at the bottom of air-capacitor 1, not gate 3 is being set respectively between frequency regulator 2 and the transition block 4 and between transition block 4 and the flow regulator 6 and is being door 5 pneumatic logic elements, transition block 4 is located at not gate 3 and is between the door 5, P ₁The input air-flow is divided into two the tunnel, the one tunnel at this and transports to transition 4 and be that frequency regulator 2 is transported on another road, a manual switch 8 is set, the delivery outlet P of base 7 on the connection tube of the front-end and back-end of frequency regulator 2 on the diaphragm between 5 _sThrough manage 9 and breather valve join.

Be further described below in conjunction with accompanying drawing:

Fig. 1 is the principle schematic of miniature respirator;

Fig. 2 is time switching, the pressure control breathing valve sketch map of miniature respirator;

Fig. 3 is the constant volume breather valve sketch map of miniature respirator.

Fig. 4 is timing, level pressure, the constant volume breather valve sketch map of miniature respirator;

Wherein: P ₁, P ₀Be input gas, P _sBe intermittence output gas.

This lung ventilator comprise air-capacitor 1, frequency regulator 2, not gate 3, transition block 4, Door 5, flow regulator 6, base 7, the manual switch 8 of breathing, tube connector 9, Can be connected with three breather valves respectively, wherein time-switching, pressure control breather valve by Air admission hole 10, exhaling hole 11, transit joint filtering net 13, positive-negative pressure gauge 12 and tracheae catheter interface 14 form, the constant volume breather valve can be by membrane vesicle 15, Positive-negative pressure gauge interface 16, atomizer joint 17, exhaling hole 18, one-way air inlet Valve 19 and tracheae catheter interface 20 forms, regularly, level pressure, constant volume breather valve by Unidirectional Controllable Income Air hole 21, membrane vesicle 22, exhaling hole 23, breather cheek valve 24, Positive/negative pressure meter connector 25, atomizer joint 26, deformable surface shield joint 27, Tracheal catheter interface 28 forms. P when base 7₁ P ₀Import simultaneously compressed oxygen, Flow-rate adjustment 6 can be regulated input gas P₀With output gas P₅Gas flow, P₁Air-flow is divided into three the tunnel after entering transition block 4, one the road to transition block 4 and be on the diaphragm of door between 5, one the road to frequency regulator 2, tell one the road to the manual switch 8 of breathing at frequency regulator 2 front ends, behind frequency regulator 2, be divided into two the tunnel, the one tunnel and import air-capacitor 1, another road is to the diaphragm between frequency regulator 2 NAND gates 3, when air-capacitor 1 internal pressure liter reached predetermined value, not gate 3 guiding valves moved down, and have closed from P₁Air-flow, transition Piece 4 and be that the diaphragm upward pressure of door between 5 falls at the end gradually. At P₀Under the airflow function, forcing is to move P on door 5 guiding valves₀Air-flow has cut off P through being that door 5 guiding valve edges lead to the PS delivery outlet₀To P_sIt is the termination of an inspiratory duration. The air-flow of air-capacitor 1 from Former road is returned to not gate 3 and is leaked to the external world, at Pressure Drop during to original value, and the cunning of not gate 3 Valve is at P₁Reset under the pressure-acting, also simultaneously with transition block 4 be to boost simultaneously on door 5 diaphragms, when reaching predetermined value, be that door 5 guiding valves move down breakdown P₀To P_sAir-flow, be again air-breathing beginning, so go round and begin again, cause intermittent P₀To P_sThe air-flow break-make.

Be further described below in conjunction with embodiment:

The variation of air-capacitor 1 volumetrical size decision make-and-break time ratio, frequency regulator can change the gas channel size again, promptly change the length of inflation, evacuation time in the air-capacitor 1, thereby scalable respiratory frequency 0-170 time/minute, frequency regulator 2 front and back are drawn air-flow respectively to manually breathing switch 8, and the gap break-make is led to extraneous port, manual aerofluxus of stopping up to the external world, can do manual the breathing and a lung, the threeway manual switch is in closed condition at ordinary times.The inspiratory/expiratory value was fixed as 1: 2, and adjustable extent is 1: 1-4, and conduit 9 connects breather valve, after entering breather valve from the gas of PS, be the air of power after air inlet 10 carries filtration, supply gas into lung with oxygen, (general fraction of inspired oxygen is 35-60%), aspirated pressure is by the indication of positive/negative pressure table 12, in case patient has productive cough to go out, resistance drops on the drainage screen, be convenient to pull down cleaning, expectorant can not enter breather valve, and breath is discharged extraneous by exhaling hole 11, mainly is applicable to and breathes management in the operation.

As second kind of embodiment, from P _sGas can join by connecting duct 9 and constant volume type breather valve, is mainly used in the patient to breast lung compliance difference, can improve aspirated pressure, and ensure enough tidal volumes.This breather valve is by diaphragm 15, positive/negative pressure table interface 16, atomization gas joint 17, exhaling hole 18, and breather cheek valve 19 and trachea catheter interface 20 are formed.

As second kind of embodiment, from P _sGas, join through connecting duct 9 and timing, level pressure, constant volume breather valve, this breather valve is applicable to various patients, breather valve is by unidirectional controlled air inlet 21, membrane vesicle 22, exhaling hole 23, breather cheek valve 24, positive/negative pressure meter connector 25, nebulizer joint 26, deformable surface shield joint 27, endotracheal tube interface 28 is formed.Be applicable to various patients' first aid respirator.

Utilize respirator of the present invention, small-sized light and handy, practical reliable, simple in structure, save the oxygen consumption, low price makes respirator universalness, practicability, the management of the breathing in not being only applicable to anaesthetize, and is applicable to on-the-spot generally rescue, it directly is the first aid scene of Anesthesia Department, emergency center, ward, anxious precious chamber, field operations, borderland, coast defence and different medical unit, improve the first aid success rate, alleviate patient's burden, for the universal and raising that promotes recovery work provides material base.

Claims

1, miniature respirator is characterized in that comprising:

A, base (7) are positioned at the bottom of respirator, are provided with two input hole (P ₁, P ₀) and an input hole (P _s);

The flow regulator (6) of b, change gas channel circulation area is positioned at the top of base (7);

The air-capacitor (1) of c, adjusting inspiration expiration ratio is located at the top of respirator;

Air-capacitor (1) inflation for a change of d, frequency regulator (2), the throttle governor of evacuation time length is located at the bottom of air-capacitor (1);

E, not gate (3) is being set respectively between frequency regulator (2) and the transition block (4) and between transition block (4) and the flow regulator (6) and be the door (5) pneumatic logic element;

F, transition block (4) are located at not gate (3) and are between the door (5), an input hole (P ₁) the input air-flow is divided into two the tunnel, the one tunnel at this and transports to transition block (4) and be that frequency regulator (2) is transported on another road on the diaphragm between (5);

One manual switch (8) is set on the connection tube of g, frequency regulator (2) front-end and back-end;

Delivery outlet (the P of h, base (7) _s) join through plastic tube (9) and breather valve.

2, respirator according to claim 1 is characterized in that breather valve is made up of air inlet (10), exhaling hole (11), transit joint inner filtration net (13), positive/negative pressure table (12) and trachea catheter interface (14).

3, respirator according to claim 1 is characterized in that breather valve is made up of membrane vesicle (15), positive/negative pressure meter connector (16), nebulizer joint (17), exhaling hole (18), breather cheek valve (19) and trachea catheter interface (20).

4, respirator according to claim 1 is characterized in that breather valve is made up of unidirectional controlled air inlet (21), membrane vesicle (22), exhaling hole (23), breather cheek valve (24), positive/negative pressure table (25), nebulizer joint (26), soft face mask (27), endotracheal tube interface (28).