Patent of the present invention proposes a kind of for implementing to breathe in imbedibility general anesthesia and the art anesthesia respirator of management and first aid critical patient respiratory failure, belongs to field of medical.
The early stage anesthesia respirator of China is level pressure type (pressure switch type) respirator and anesthetic machine fit applications (i.e. 101 type universal anesthetic respirators), because of power gas with anesthesia circulating line in anaesthetic gas separate, oxygen consumption is big, changed by the change of breast lung compliance because of pressure is provided by the tidal volume that provides again, sixties end is progressively eliminated.
The anesthesia respirator that has a large amount in variety in the world, the anesthesia respirator of various countries is also different on theory structure, but common characteristic is with constant volume type (capacity switching) respirator and anesthetic machine fit applications, as the German Drager Sulla808v of company, anesthesia respirators such as the Mooulus of U.S. ohmeda company and Spain Compact-3 type, all be that the power gas that respirator provides is acted on folding robber bellows in the bell jar, power as the folding bellows of intermittence extruding, respirator work done gas separates with the recyclegas that anesthetic machine contains anaesthetic, oxygen consumption is just very big, perhaps provide air force to push folding bellows with air compressor, power supply and air compressor must be arranged, could save the oxygen consumption, volume is big like this, the cost height.And need establish the interior apparatus of oxygen supply of anesthetic machine in addition.The intelligent numb A type of Germany REMUS is with pneumatic automatically controlled timing type (time switch type) respirator and anesthetic machine fit applications, increase volume with the prolongation corrugated tubing that surmounts tidal volume, be about to 2 meters long corrugated tubings and be connected on anesthetic machine breathing bag seam, the power gas that makes the respirator work done communicates with anaesthetic gas in the anesthetic machine circulating line, anaesthetic concentration is successively decreased in the inherent corrugated tubing that prolongs of anesthetic machine circulating line, the gas that provides because of respirator needs intermittent each the discharge again after entering the corrugated tubing of prolongation, so can not be as apparatus of oxygen supply in the anesthetic machine, still need add oxygen supply equipment in addition, power gas oxygen consumption is still big, also has micro-anaesthetic gas to leak.
Patent anesthesia respirator of the present invention with domestic and international different characteristics is; Miniature respirator is power with oxygen, carrying the interior anaesthetic gas of breathing bag with the oxygen (can regulate) of 12-24% supplies gas into lung, when supplying gas into lung, the power edema caused by disorder of QI is two the tunnel, one the tunnel leads to the mushroom flap valve pushes down expiratory valve, one the tunnel carries and sees that anaesthetic gas is sent in the corrugated tubing of inspiratory valve front end in the breathing bag, be malleation with respiratory tract in two corrugated tubings of respiration valve front end, end-tidal pressure returns zero, and the circulation air path part of respiration valve rear end, no matter pressure is zero (equaling atmosphere) in mechanical respiration air-breathing or that exhale is breathed mutually.The power oxygen that respirator is provided is oxygen-supplying amount in the anesthetic machine again, oxygen supply separately when mechanical respiration, saved the oxygen consumption, current all anesthesia respirators have both at home and abroad been changed when supplying gas into lung, be malleation all in the anesthetic machine circulating line, the circulating line internal pressure is returned the pattern of zero unified general layout during expiration.When closing respirator, on the respirator switch, oxygen supply proportioning device automatically is housed in the anesthetic machine, when needing quick oxygen supply, can by manually fast the oxygen supply switch provide.When mechanical respiration and manual respiratory exchange, need not permutator, when mechanical respiration, also can do manual assisted respiartion, need not close respirator or, remake manual artificial respiration by pole changer, required laughing gas or volatility anaesthetic import anesthetic machine separately.Quite a few adopts the vein change to close anesthesia on general anesthesia in China, anesthetic machine only plays the breathing management role of control breathing, can be at the permutator place of anesthetic machine and respirator junction, directly draw respirator, get the plastic pipe joint miniature respirator breather valve isometric, make control breathing and use with corrugated tubing.Two corrugated tubings directly can be connected on the corresponding breather valve infant, pediatric anesthesia, mechanical dead space amount is atomic little, and test lung is used for the adjustment tidal volume.
Anesthetic gas machine proposed by the invention, form by respirator and anesthetic machine, it is characterized in that, heavy 7 bottoms are provided with pole changer 18 at the bottom of the respirator, the pole changer bottom is a gas mixer chamber 21, gas mixer chamber 21 bottoms directly are connected with air bag 29, gas is mixed to that one side of 21 is provided with a check valve 20 and is connected and is connected with volatillizer 33 simultaneously with breathing bag 29, another side have two conduits 23,24 respectively with expiratory valve 27 on mushroom flap valve 28 and the front end of inspiratory valve 26 communicate; An air bleeding valve 32 of getting rid of unnecessary gas also is set on the connection tube on air bag 29 and the volatillizer 33, air bag 29 is by volatillizer 33 and carry the corrugated tubing 30 of anesthetic gases through inspiratory valve 26 front ends, three way cock 38 and lung qi pipe communicate, simultaneously, the lung qi pipe is through three way cock 38, corrugated tubing 31, expiratory valve 27, and carboloy dioxide canister 34, volatillizer 33 and air bag 29 communicate.
Further describe below in conjunction with accompanying drawing:
Fig. 1 is a principle assumption diagram of the present invention;
Fig. 2 is the principle assumption diagram that is adapted to infant, little young anesthesia respirator of the present invention;
Fig. 3 is the structural representation of the inside and outside volatillizer of loop;
Fig. 4 is the anesthesia respirator sketch map that connects for pneumatic automatically controlled respirator.
Wherein: 1 air-capacitor, 2 respiratory frequency by-pass cockes, 3 not gates, 4 transition block, the 5th, door, 6 flow control valvees, 7 bases, 8 hand switches, 9 conduits, 10 breather valve air inlets, 11 breather valve gas outlets, 12 positive/negative pressure tables, 13 breather valve drainage screens, 14 breather valve catheter slipjoints, 18 pole changers, 19 conduits, 20 check valves, 21 gas mixer chambers, 22,23,24 conduits, 25 positive/negative pressure tables, 26 inspiratory valves, 27 expiratory valves, 28 mushroom flap valves, 29 breathing bags, 30 corrugated tubings, 31 corrugated tubings, 32 air bleeding valves, 33 volatillizers, 34 carboloy dioxide canisters, 35 test lung, 36 test lung interfaces, 37 oxygen, laughing gas, mass air flow sensor, 38 three way cock.
Miniature respirator is mainly by air-capacitor 1, frequency adjustment switch 2, not gate 3, transition block 4, is that door 5, air volume regulating switch 6, base 7 are formed, and this miniature respirator has been made detailed description in No. 93111519.1, application for a patent for invention.Behind pole changer 18, be divided into two the tunnel from respirator outlet Ps output gas, one road air-flow passes to mushroom flap valve 28 through conduit 23 and pushes down expiratory valve 27, make expiratory valve 27 be in closed condition, another road gas is inhaled gas in the band breathing bag 29, through conduit 22, check valve 20 people's gas mixing chambers 21 are led people's inspiratory valve 26 front ends by conduit 24 and are participated in gas unidirectional circulation in the directed anesthetic machine.When mechanical respiration, expiratory valve 27, the circulating line internal pressure of inspiratory valve 26 front ends, when supplying gas, be malleation into lung, exhale and return zero the whole period of the day from 1 p.m. to 3 p.m., and the pressure in the circulating line of expiratory valve 27, inspiratory valve 26 rear ends is zero when supplying gas into lung and exhaling, and unnecessary gas can be discharged through air bleeding valve 32.
As embodiment one, method of attachment as shown in Figure 2, be mainly used in infant, pediatric anesthesia, also can be used for the adult, miniature respirator base 7 is connected with pole changer 18, adds oxygen and laughing gas in the anesthesia respirator circulating line, (laughing gas is selected for use according to the anesthesia needs), 27 is oxygen, nitrous oxide flowmeter, and its unidirectional orientation circulation of air flow pathway is; When air-breathing, anaesthetic gas in the air bag 29, through volatillizer 33, inspiratory valve 26, corrugated tubing 30, breather valve intake interface 10, drainage screen 13, catheter slipjoint 14 enter in the lung, during expiration by catheter slipjoint 14, drainage screen 13, breather valve gas outlet 11, corrugated tubing 31, expiratory valve 27, carboloy dioxide canister 34, volatillizer 33 to breathing bag 29, supply gas and measure by the positive/negative pressure table into lung pressure.During mechanical respiration, from the output gas Ps of respirator behind pole changer 18, be connected to breather valve connection tube 9, enter breather valve by conduit 19, and carry the interior anaesthetic gas of anesthetic machine and supply gas into lung through filter screens 13 and catheter slipjoint 14 by the air inlet 10 of breather valve interface, during expiration, breath transtracheal catheters joint 14, drainage screen 13, gas outlet 11, corrugated tubing 31, expiratory valve 27, carboloy dioxide canister 34, volatillizer 33 are got back to breathing bag 29, supply gas and measured by Pressure gauge 12 into lung pressure, unnecessary gas is discharged by air bleeding valve 32.Test lung 35 is used to supply gas into adjustment tidal volume before the lung.
As embodiment two, volatillizer 33 adopts the inside and outside volatillizer of loop shown in Figure 3, and wherein 41 is adjusting knob in the loop, 43 regulate knob outward for loop, and 42 for regulating scale, and 46 is anesthetics drug storage bottle, 45 is mist pipe, and 44 is drainage screen, and 47 is dosing mouth, owing to do not establish the yarn stamen in the anesthetics drug storage bottle 46, with after do not have the storage of unnecessary anaesthetic to stay, therefore can use multiple anaesthetic, each application can only be deposited a kind of anaesthetic, and can regulate anaesthetic concentration by 41,43, be adapted to various uses and use.
As embodiment three, replace pneumatic gas-control respirator (being miniature respirator) with general pneumatic automatically controlled respirator, as shown in Figure 4, replace pneumatic automatically controlled respirator 39 miniature respirator to be installed in pole changer 18 tops, through mixing chamber 21, the perhaps gas of the electromagnetic valve output of pneumatic automatically controlled respirator, it is all identical to import the anesthetic machine method of attachment, all can reach same purpose.
Anesthesia respirator of the present invention, compare with domestic and international existing anesthesia respirator, has remarkable efficacy, through verification experimental verification, respirator is a power with the oxygen of 12-24%, carries the interior anaesthetic gas of anesthetic machine circulating line of 76-88%, supply gas into lung, be respiratory drive, fully oxygen supply again, closing the respirator switch is that automatic oxygen supply is in anesthetic machine, and use the inside and outside volatillizer of multiduty loop, make anesthesia safety and practical, small-sized light and handy, function is many, simple structure, grasp easily, low price is an infant, the child, the novel anesthesia respirator that becomes to be suitable for per capita.