CN1038938A - Anaethetic evaporator and the method for using with respiratory organ (or anesthetic machine) coupling - Google Patents

Abstract

A kind of anaethetic evaporator and use this vaporizer and carry out the method that hands is stated anesthesia belongs to medical domain.Anaethetic evaporator has the output control valve and the airway valve that can link, control input throughput and anesthetic gases output concentration.Vaporizer adopts the high specific heat material, can compensate the temperature effect anesthesia gas concentration within the specific limits.Vaporizer and respiratory organ adopt the mode that is connected in parallel, and can reduce the influence of bleed pressure variation to anesthesia gas concentration within the specific limits.Vaporizer in the also alternative popular anesthetic machine of this vaporizer.This vaporizer and corresponding connecting mode are that vast basic hospital adopts " balanced anesthesia " technology that simple, inexpensive, reliable and stable Apparatus and method for is provided.

Description

Anaethetic evaporator and the method for using with respiratory organ (or anesthetic machine) coupling

The invention belongs to the medical anesthesia field.

The anesthesia of modern medicine just turns to " balanced anesthesia " technology from " general anesthesia ", to reduce various contingent side effect.The modern anesthetic machine of balanced anesthesia Technology Need also has very high requirement to the anaethetic evaporator in the anesthetic machine.Modern anesthetic machine such as Megamed700 type (Switzerland), FO-20S type (Japan), phoenix type (U.S.) and MHJI type (China) price are than higher, generally hospital is unable acquires, and the Acoma type that the Copper Kettle type of producing with supporting anaethetic evaporator of modern anesthetic machine such as U.S. Foregger company, Floutec Mark III type that Britain Cyprane company produces, Japanese Acoma company produce, they except price each up to more than 10,000 dollars, also have some other shortcoming.(referring to " respiratory organ and anesthetic machine-ultimate principle, structure and clinical practice " P230～234, P256～269, Shanghai branch of Chinese Medical Association, medical apparatus and instruments four factories in Shanghai compile in October, 1987).

The objective of the invention is: provide a kind of simple, reliable, inexpensive anaethetic evaporator and this vaporizer and respiratory organ (or popular anesthetic machine) matching used method, adopt the needs of balanced anesthesia technology when satisfying general hospital surgical.Make " balanced anesthesia " technology obtain penetration and promotion at vast basic hospital.

With for example bronze body of making anaethetic evaporator of high specific heat material, in order to the influence of compensates to output characteristics.The interlock control valve that anesthetis storage chamber, evaporation cavity, gas input, output channel, anesthetic gases output channel and each gas passage are arranged on the body.After in storage chamber, injecting required anesthetis, connect source of the gas, open the interlock control valve, the gas of importing from gas passage can form a large amount of micro-bubbles when passing through the bubble generation net, bubble passes anesthetis, quicken the formation of anesthetis saturated vapor, and form the saturated vapor of certain pressure in evaporation cavity, output is for using from the anesthetic gases output channel.Open or close the interlock control valve, can open or close gas input and anesthetic gases output simultaneously.Operation finishes, and when the anesthetic gases output channel was closed, the gas of input can be given patient and breathe from the gas output channel.

The invention will be further described in conjunction with the accompanying drawings.

Fig. 1 is the front view of anaethetic evaporator, and Fig. 2 is the left view of Fig. 1, and Fig. 3 is the vertical view of Fig. 1.Cutaway view is arranged, the internal structure of expression corresponding site on Fig. 1 to Fig. 3 respectively.

Fig. 4 is that anaethetic evaporator uses sketch map.

Fig. 5 is the block diagram that anaethetic evaporator and respiratory organ coupling are used.

1 is support among Fig. 1, Fig. 2, is used to support vaporizer and is fixed in the operating-table appropriate location; The 2nd, the discharge opeing screw has " Y " type passage on it, be used for discharging the remaining anesthetis of storage chamber; The 3rd, the fluid injection screw, on fluid injection groove 3a is arranged, anesthetis can enter storage chamber from the fluid injection groove; The 4th, stopple; The 5th, body is with for example bronze making of high specific heat material; The 6th, the bubble generation net is made by the net that the order number is suitable, is fixed on the bottom of joint with elastic wire 6a; The 7th, storage chamber is stored anesthetis; The 8th, joint has gas passage 8a on it; The 9th, the elastic collar of joint 8 is fixed on the appropriate location with 8; The 10th, evaporation cavity; The 11st, alignment pin, graduated disc 13 fixed on needs the position; The 12nd, spring; The scale of expression output anesthetic vapor concentration is arranged on 13, and it is installed on the stem shaft 14; 14 passage 14a and output channel 17 constitute the output control valve; The 15th, case; The 16th, body cap; 17a is the delivery outlet joint; 18,19 be respectively elastic washer and packing ring; The 20th, screw; The 21st, cam; The 22nd, movable block; Radially airway 22a, 22d are arranged on it, axial airway 22b, the hole 22e that places spring 25 is arranged at the bottom, and appearance has radial depth and the suitable groove 22c of axial length; The 23rd, gas source connector has axial air flue 24,26th, stopple on it; The 27th, the air flue on the body 5, it communicates with air flue 8a on the joint 8; 21,22 and 25 each part and air flue 27 constitutes airway valves, and 21 when being in the maximum eccentric position, closes air flue 27(corresponding to " 0 " scale on the graduated disc 13); The 28th, that opens on joint 8 walls runs through groove; The 29th, reservoir channel, the anesthetis that comes from fluid injection groove 3a through reservoir channel to storage chamber 7 and liquid level chamber 3; 31 is the glass on 30 surfaces, and the scale of expression liquid level is arranged on it.

32 is the air flue joint screw among Fig. 4; 33 is pneumatic duct; 34 is the three way cock; 17b is the anesthetic gases outlet tube; 17c is the anaethetic evaporator outlet tube.

Oxygen source is the same with oxygen source in the prior art among Fig. 5, and respiratory organ is the respiratory organ of KR-II type high-frequency respirator or other model; The available existing blender transformation of the way of blender (needle stand) is changed a social system very simply, and the present invention does not relate to; Vaporizer and respiratory organ are and are connected in parallel.

Use vaporizer of the present invention and respiratory organ to constitute and anaesthetize when being, adopt the connecting mode of Fig. 5, during with the vaporizer in the alternative homemade popular anesthetic machine of vaporizer of the present invention, directly insert the vaporizer position in the anesthetic machine.

When using method of the present invention, earlier anaethetic evaporator is installed in (support is fixed on the operating-table headstock) on 1 support, each parts are errorless by connection shown in Figure 5, put graduated disc on the vaporizer in " 0 " position, this moment exports control valve and airway valve is all closed.Tighten the discharge opeing screw, unscrew the fluid injection screw, the anesthetis that operation is needed is tightened the fluid injection screw after for example isoflurane, the about 10ml of enflurane are injected into storage chamber from the fluid injection groove.Arrive the appropriate location according to the needs rotary dial of performing the operation to anesthetic concentration, at this moment export control valve and airway valve and all be opened to and the graduated disc relevant position, the gas of source of the gas is delivered to respiratory organ to blender (needle stand) through Pressure gauge, air relief valve, and this is a main road; Source of the gas arrives blender again after the by-pass scale is delivered to vaporizer, in blender, send into patient's mouth in the proper ratio after gas, air and the anesthetic vapor mixing with the source of the gas main road.Through the gas that flow meter is delivered to vaporizer is imported gas passage on the joint by the input port joint in, through running through groove and bubble generation net, in anesthetis, form a large amount of micro-bubbles, can quicken to anaesthetize the formation of saturated vapor, and in evaporation cavity, form more stable anesthetic vapor pressure, deliver to blender through output channel.If operating time is long, can when not interrupting performing the operation, turns on the fluid injection screw and add anesthetis.Operation is put scale in " 0 " position after finishing, and continues to supply with patient's breathing gas if desired, and then gas is directly imported patient's mouth by respiratory organ, blender.

As if being placed in the anesthetic machine as auxiliary equipment, uses by vaporizer of the present invention, put scale in " 0 " position, continue to supply with patient's breathing gas if desired, then gas from the airway of gas source connector input on movable block, pneumatic duct, three way cock to patient's mouth.Remaining anesthetis can reclaim from the discharge opeing screw in the storage chamber.

Compared with prior art, the present invention has such Some features at least:

Consist of anesthesia system with this evaporimeter and existing respirator coupling, this kind anesthesia system can control breathing automatically, can substitute the Anesthesia machine of existing popular style. The unable Anesthesia machine of acquiring of general hospital can be solved, and balance anesthesia can not be done, can only the liquor-saturated situation of performing an operation of general anesthesia, there is respirator in general hospital, therefore is beneficial to popularizing and promoting of balance anaesthesia technology.

Evaporimeter can substitute the evaporimeter in the domestic popular Anesthesia machine. And can not produce anesthetic steam adverse current to main road, avoid patient to meet accident.

Evaporation structure is simple, volume is little, in light weight, be convenient to move and carry, easy to use.

Vaporizer adopts for example bronze making of high specific heat material, therefore can carry out temperature-compensating within the specific limits; Vaporizer and respiratory organ adopt and are connected in parallel, and therefore can realize pressure compensation within the specific limits, can make anesthetic vapor concentration roughly keep balance like this under environment for use.

Among the embodiment, case ordinary steel sheet material or plastic production.Stem shaft, movable block and each spring are made of rustless steel.All the other are made of bronze.Storage chamber has a taper or arcs of recesses bottom, is convenient to a spot of anesthetis and still can shows in the liquid level chamber and use.The axis of joint and the dead in line of body.Reservoir channel, apocenosis passage, liquid level passage are decussation, and the conical lower portion of a through storage chamber of reservoir channel.

Claims (6)

1, a kind of anaethetic evaporator, feature is: stem shaft 14, stem shaft passage 14a, gas output road 17 constitute the output control valve, cam 21, movable block 22, spring 25, air flue 27 constitute airway valve, output control valve and airway valve enable possition and close with graduated disc 13 high scales correspondingly, joint 8 one ends with passage 8a are in storage chamber 7 bottoms.

2, anaethetic evaporator according to claim 1, feature is: having has air flue to communicate with air flue on the movable block 22 on the air flue joint screw 32 of pneumatic duct 33, an end of pneumatic duct 33 links to each other with a threeway.

3, a kind of method that produces anesthetic gases, feature is: claim 1 or 2 described anaethetic evaporators and respiratory organ are connected in parallel.

4, anaethetic evaporator according to claim 1 and 2, feature is: have on the end wall of joint 8 more than onely run through groove 28, appearance has the suitable net of order number 6.

5, anaethetic evaporator according to claim 1 and 2, feature is: the tapered or arcs of recesses in anesthetis storage chamber 7 bottoms, reservoir channel 29 communicates with the storage chamber bottom, and fluid injection groove 3a is arranged on the fluid injection screw 3.

6, anaethetic evaporator according to claim 1 and 2, feature is: on the discharge opeing screw 2 apocenosis passage is arranged.

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