CN102160907A - Device and method for supplying breathing air to breathe - Google Patents
Device and method for supplying breathing air to breathe Download PDFInfo
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- CN102160907A CN102160907A CN2010101514061A CN201010151406A CN102160907A CN 102160907 A CN102160907 A CN 102160907A CN 2010101514061 A CN2010101514061 A CN 2010101514061A CN 201010151406 A CN201010151406 A CN 201010151406A CN 102160907 A CN102160907 A CN 102160907A
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Abstract
The invention discloses a device and method for supplying breathing air to breathe. The device comprises a reciprocating unit for controlling accepted inbreathing airflow of breathing motion and an air mixer for supplying fresh airflow. Furthermore, the device also comprises a breathing loop which is used for guiding exhaled airflow to the reciprocating unit, introducing fresh air from the gas mixer for breathing, and introducing the airflow from the reciprocating unit for inbreathing, wherein the breathing loop comprises a CO2 remover which removes carbon dioxide from the gas. The device comprises a first bypass passage as well, wherein the first bypass passage moves around the reciprocating unit and connects the breathing loop to the inbreathing airflow on the upstream of the reciprocating unit. The invention also provides a corresponding method for supplying the breathing air to breathe.
Description
Technical field
Disclosure text relates generally to and is used to supply breathing gas so that the apparatus and method of breathing.
Background technology
Efficient to hospital requires just becoming to increase day by day, need implement surgical operation to more patient with short time and lower cost.But in any case, patient safety is only topmost requirement.Anaesthesia machines is used in hospital operating room, intensive care unit or other patient care place the patient being anaesthetized and taking a breath.
The patient respiratory loop can be rebreathing circuit or open loop.Has CO
2The rebreathing circuit of absorber is when have volatile anesthetic or NO in anesthesia
2Or both use when having concurrently.Displaced is that open Huis road is used for vein (IV) anesthesia.
Therefore, utilize rebreathing circuit to carry and suck anesthesia, this rebreathing circuit comprises: air-breathing branch road (limb), and via it, the patient obtains the suction breathing gas from respiratory organ; The expiration branch road, it sends back respiratory organ with the gas of breathing out; Y shape part, it is connected to another patient's branch road with air-breathing branch road and expiration branch road, and this another patient's branch road provides the gas communication that leads to patient's lungs path.Breath comprises anesthetic gases a large amount of costlinesses and environmentally harmful.The gas that rebreathing circuit is used for breathing out turns back to air-breathing next time.Before this, must remove the carbon dioxide that is obtained from patient's lungs as the metabolic garbage of patient to gas.Removing is at CO
2Carry out in the absorber.
Traditional anesthetic ventilator comprises the bottle Chinese style bellows (" bellows-in-bottle ") that the respiratory organ driving gas is separated from circulatory and respiratory gas.For air-breathing, utilize the respiratory organ driving gas to be exerted pressure in the bellows outside.This just pushes bellows, forces the breathing gas in the bellows to flow to patient's lungs.During exhaling, bellows are filled in the gas outflow that discharges driving gas pressure and pressurize in patient's lungs.Adopt the live gas pipeline, breathing gas is supplied to rebreathing circuit as continuous-flow.In case bellows fill up, other gas just flows to the loop from the patient, and the live gas pipeline increased circuit pressure, and this opened by pressure overvoltage dump valve is so that the gas that will increase is removed to ventilation (scavenging) system.
In a kind of new rebreathing circuit, use long gas passage to carry out the separation of driving gas-breathing gas, in this gas passage, gas column moves around in air-breathing and exhalation process.Rebreathing circuit has been saved anesthetic gases, and has reduced the cost of anesthesia of hospital thus, and has reduced the influence to environment.Can not suck when anesthetis but during for intravenous pharmacy for example, then do not need to absorb CO
2And rebreathing circuit.Intravenous anesthesia is just obtaining popularizing and also needing optimum solution.Than rebreathing circuit, open breathing circuit is more simple solution, but it can not be used for sucking anesthesia.More cheap is to adopt open breathing circuit in IV anesthesia with being easy to.But in case, IV anesthesia need be converted to and suck anesthesia sometimes.In such circumstances, owing to anesthetic gases needs rebreathing circuit.In one type of prior art syringe, this conversion is also infeasible, and therefore adopts the equipment of non-optimum to carry IV anesthesia.Current anesthesia solution is a rebreathing circuit, and open loop then uses in the Intensive Care Therapy ventilation.
Summary of the invention
Above-mentioned defective, shortcoming and problem are resolved in the text, and this will the following specifically describes by reading and understanding understands.In one embodiment, a kind ofly be used to supply breathing gas so that the device of breathing comprises: reciprocal unit, it receives and sucks gas stream, is suitable for the control breathing motion; And the gas mixer that is used to supply live gas stream.Be used to supply breathing gas so that the device of breathing also comprises breathing circuit, it is used for breath stream is guided to reciprocal unit, is used for from gas mixer guiding live gas stream so that breathe, and be used for flowing so that air-breathing from reciprocal unit guides gas, this breathing circuit comprises the CO that is used for removing from gas carbon dioxide
2Remover.Be used to supply breathing gas so that the device of breathing also comprises first bypass channel, this first bypass channel is walked around reciprocal unit and breathing circuit is connected to suction gas stream in reciprocal unitary upstream.
In another embodiment, a kind ofly be used to supply breathing gas so that the method for breathing comprises: supply sucks gas and flow to reciprocal unit and move in order to control breathing, and live gas stream is supplied to breathing circuit.Be used to supply breathing gas so that the method for breathing also comprises along breathing circuit breath stream is guided to reciprocal unit, guiding live gas stream is used for breathing and guiding be used for from reciprocal unitary gas stream air-breathing, and from breathing circuit, removing carbon dioxide in the mobile gas.Be used to supply breathing gas so that the method for breathing also comprises optional step: walk around reciprocal unit and will suck gas stream and be supplied to breathing circuit.
In another embodiment, a kind ofly be used to supply breathing gas so that the device of breathing comprises respiratory organ, it has to receive along first pipeline and sucks gas and discharge the reciprocal unit of breath along second pipeline, and this reciprocal unit is suitable for the control breathing motion.Be used to supply breathing gas so that the device of breathing also comprises: gas mixer, it is used to supply live gas stream so that breathe; And breathing circuit, it is used for breath stream is guided to respiratory organ, be used for flowing so that breathe from gas mixer guiding live gas, and be used for flowing so that air-breathing from the respiratory organ guiding gas, this breathing circuit comprises the CO that is used for removing from gas carbon dioxide
2Remover.Be used to supply breathing gas so that the device of breathing also comprises first bypass channel that connects first pipeline and breathing circuit, and comprise second bypass channel that connects the breathing circuit and second pipeline, wherein, first bypass channel and the second bypass channel both are suitable for walking around reciprocal unit.
To those skilled in the art, with reference to the accompanying drawings and describe in detail, various other features, objects and advantages of the present invention will become clear.
Description of drawings
Fig. 1 is the sketch map according to the system of an embodiment;
Fig. 2 is the sketch map according to the system of another embodiment;
Fig. 3 shows the selector valve that is in primary importance that is used at embodiment shown in Fig. 1 or Fig. 2;
Fig. 4 shows the selector valve of the Fig. 3 that is in the second position;
Fig. 5 shows another selector valve that is in primary importance that is used at embodiment shown in Fig. 1 or Fig. 2; And
Fig. 6 shows the selector valve of the Fig. 5 that is in the second position.
Parts List
1 respiratory organ
2 breathing circuits
3 gas mixers
4 curees
5 gas sources
6 reciprocal unit
7 flow control valves
8 first pipelines
9 outlet valves
10 second pipelines
11 scavenging air valves
14 bottles
15 bellows
17 breathe organ pipe
18 suction nozzles
19 exhaust tubes
20 CO
2Remover
21 first check valves
22 second check valves
23 branch units
24 air-breathing branch roads
25 expiration branch roads
Air-breathing and the expiration branch road of 26 combinations
27 patients pipe
28 endotracheal tubes
30 gas sources
31 gas sources
32 valves
33 flow adjustment valves
34 flow adjustment valves
35 paths
37 anesthetis feeding mechanisms
39 gas analysis apparatuss
41 current paths
50 are used for air-breathing selector valve
51 first bypass channels
52 selector valves that are used to exhale
53 second bypass channels
54 are used for air-breathing and both selector valves of expiration
55 sliding parts
The specific embodiment
Come specific embodiment is described with reference to accompanying drawing in the following detailed description.Certainly, these specific embodiments can be made amendment and will can not be limited as the scope of the present invention as illustrated in the claims.
Fig. 1 and Fig. 2 show a kind of device of changing at anesthesiaing system of being used between rebreathing circuit pattern and open loop pattern.Anesthesiaing system comprises respiratory organ 1, breathing circuit 2 and live gas blender 3.Curee 4 is connected to breathing circuit 2 by endotracheal tube 28.
In Fig. 1, respiratory organ 1 is connected to gas source 5, and this gas source typically is forced air or also can is oxygen sometimes.Respiratory organ 1 comprises: reciprocal unit 6 is used for lungs Compressed Gas towards the curee so that air-breathing; And flow control valve 7, be used to control and come from gas source 5 flows to reciprocal unit 6 along first pipeline 8 suction gas stream.Respiratory organ 1 also comprises outlet valve 9, and it is used to control the breath flow rate by second pipeline 10, the gas of respiratory organ 1 or reciprocal unit 6 when release is exhaled as curee 4.Respiratory organ 1 also comprises scavenging air valve 11, allows extra breath of the curee 4 to leave breathing circuit 2.Respiratory organ 1 can be equipped with gas source selecting arrangement (not shown), its can be used for or manually or automatically (for example under the situation that exhausted gas does not pressurize) switch and be used for air-breathing respiratory organ gas stream.Reciprocal unit 6 shown in Figure 1 comprises bottle 14 and is positioned at the bellows 15 of bottle 14, is used to control the respiratory movement of curee's lungs.
When the curee is taken a breath, outlet valve 9 closures for sucking air-flow and flow control valve 7 is opened.This air-flow filling bottle 14 makes bellows 15 promote downwards, promotes the interior gas of bellows further towards curee 4.During exhaling, flow control valve 7 closures and outlet valve 9 opened in order to control exhaled air flow and pressure.The gas that is pressurizeed in bottle 14 is released, and makes to load bellows 15 from the gas of lungs.When bellows 15 filled up, it ran into bottle 14 top, and entered more air-flows in the system and increase pressure in the bellows 15.When this pressure surpasses the bottle pressure, scavenging air valve 11 will be opened, and allow these more gas communication to air exchange system.
Flow for both for sucking gas stream and breath, respiratory organ 1 is connected on the breathing circuit 2 such as rebreathing circuit by breathing organ pipe 17.Breathing circuit 2 comprise the suction nozzle 18 that is used for sucking gas, the exhaust tube 19 that is used for breath, from remove from curee 4 breath or absorbing carbon dioxide such as CO
2The CO of absorber
2Remover 20, be used for first check valve 21, second check valve 22 that is used for exhaust tube 19 breaths that suction nozzle 18 sucks gases, branch units 23 such as Y shape part with at least three branch roads, one of them is the air-breathing branch road 24 that is used to suck gas, second is that 25, the three of expiration branch roads being used for exhaled air flow are to be used to the combined finger 26 that sucks the air-breathing of gas and breath and exhale.Air-breathing branch road 24 is connected to suction nozzle 18 and expiration branch road 25 is connected to exhaust tube 19.The combined finger 26 air-breathing and that exhale of branch units 23 can be managed 27 by the patient and is connected to endotracheal tube 28, thereby allows to carry out gas exchange with curee 4 airway.
Suck gas and flow through breathing organ pipe 17, CO from reciprocal unit 6
2The suction nozzle 18 of remover 20, first check valve 21 and patient circuit 2 arrives branch units 23, and further by the patient manage 27 and endotracheal tube 28 flow to curee 4 lungs.By closing from breathing the air-flow of organ pipe 17 via exhaust tube 19, second check valve, the 22 guiding gas circulation on the exhaust tube 19 is to suction nozzle 18.Because the compliance of lungs, the gas volume that increases in the lungs just can increase lungs pressure.Thereby in case air-breathing stopping and outlet valve 9 unlatchings reducing bottle 14 pressure, then the compliance of lungs just can promote alveolar gas and passes endotracheal tube 28 and patient and manage 27 and arrive branch units 23, and further passes exhaust tube 19 and breathe organ pipe 17 in order to fill bellows 15.
Be used to carry the gas mixer 3 of live gas to be connected to breathing circuit 2 by path 35.Gas mixer 3 is used to provide patient respiratory gas.One or more gas sources 5,30,31 are connected to gas mixer 3.Gas source 5 is used for aforesaid air, and gas source 30 is used for oxygen, and gas source 31 is used for nitrous oxide.Gas mixer comprises: valve 32, and it is used to the gas source 5 selecting or be used for the gas source 31 of nitrous oxide or be used for air; Be used to regulate or the flow adjustment valve 33 of nitrous oxide or air flow; Be used to regulate the flow adjustment valve 34 of Oxygen Flow; And be used to supply the anesthetis feeding mechanism 37 that anesthetis is anaesthetized curee 4, and for example, vaporizer.Anesthetis feeding mechanism 37 adds inhalant in the selected admixture of gas to.As alternative, the form that anesthetis can liquid (when it will flash to gas in the loop) or directly be injected in the breathing circuit as steam.
It is perfect in addition that breathing circuit 2 also can utilize gas analysis apparatus 39, and this gas analysis apparatus can be as effluent type that is presented or main flow type.Lateral flow assays device collected specimens air-flow from breathing circuit 2 is used for analyzing.39 pairs of the gas analysis apparatuss of main flow type are directly analyzed at breathing circuit 2 or at the air flow that the patient manages in 27.
As mentioned above, the rebreathing circuit pattern especially ought will have anesthetis or NO
2Breathing gas use when flowing to the curee, but do not contain anesthetis or NO when carrying
2Breathing gas the time then use the open loop pattern more favourable, compare with the employed element of rebreathing circuit pattern in this case, have only the part similar elements to be used.Particularly, CO
2Remover 20 does not need in the open loop pattern, therefore it can be walked around when the suction air-flow that will come from gas source 5 is transported to breathing circuit 2.Significant advantage is to save CO
2The inclusions of remover 20 only is used for the rebreathing circuit pattern and removes the CO that is breathed out by the curee
2In addition, by walking around CO
2Remover 20 can reduce inspiratory resistance.Furthermore, can also reduce inspiratory resistance by in the open loop pattern, walking around reciprocal unit 6.
In Fig. 1, be used for first pipeline 8 that air-breathing selector valve 50 is connected to respiratory organ 1, so that guiding sucks air-flow from gas source 5 or flow through first bypass channel 51 at CO
2The downstream of the remover 20 and first check valve 21 arrives breathing circuit 2, and advantageously walks around CO
2The remover 20 and first check valve 21 both and arrive suction nozzle 18; Perhaps arrive at CO
2The reciprocal unit 6 that the upstream of remover 20 and breathing circuit become to flow and be communicated with, therefore sucking air communication crosses CO
2Remover 20, first check valve 21 and suction nozzle 18 guide curee's respiratory movement.
In order to guide the suction air-flow, be used for flow for the 51 one-tenth selector valves 50 that are communicated with of air-breathing and first bypass channel and be applicable to stop and suck air communication to first bypass channel 51 (if having selected the rebreathing circuit pattern) and be applicable to open and suck air communication, or be applicable to stop and suck air communication to reciprocal unit 6 (if having selected the open loop pattern) and be applicable to open and suck air communication to first bypass channel 51 as the alternative air-breathing selector valve 50 that is used for to reciprocal unit 6.First bypass channel 51 can be connected to breathing circuit 2 in the upstream or the downstream of the breathing circuit connecting portion of path 35, but preferably first bypass channel 51 is connected between the air-breathing branch road 24 and first check valve 21 of branch units 23.
Advantageously, with an end of second bypass channel 53 in the upstream of second check valve 22, preferably between the expiration branch road 25 of second check valve 22 and branch units 23, be connected to breathing circuit 2.The other end of second bypass channel 53 is connected in order to exhaled air flow is disposed to second pipeline 10 between reciprocal unit and outlet valve 9.In respiratory organ 1, arranged the selector valve 52 that is used to exhale, it flows for 53 one-tenth with second bypass channel and is communicated with, so that the exhaled air flow of guiding in the exhaust tube 19 of breathing circuit 2, or in the open loop pattern, arrive the reciprocal unit 6 and wherein between of outlet valve 9 and scavenging air valve 11 by second bypass channel 53, allow curee's 4 extra gases of breathing out to leave breathing circuit 2, walk around reciprocal unit 6 thus and make that curee's expiration is more easy, perhaps in the rebreathing circuit pattern, arrive reciprocal unit 6 by second check valve 22.
In order to guide exhaled air flow, the selector valve 52 that is used to exhale is applicable to that the prevention exhaled air flow leads to second bypass channel 53 (if having selected the rebreathing circuit pattern) and is applicable to that opening exhaled air flow leads to reciprocal unit 6, perhaps as alternative, the selector valve 52 that is used to exhale is applicable to stop exhaled air flow to lead to reciprocal unit 6 (if having selected the open loop pattern) and be applicable to opens exhaled air flow through second bypass channel, the 53 reciprocal unit 6 of arrival and wherein between of outlet valve 9 and scavenging air valve 11.Yet, recognize that importantly this second bypass channel 53 has superiority, but non-imperative, because the most important thing is to arrange first bypass channel 51 mentioned above.Therefore, except the situation of rebreathing circuit pattern and also have the situation of open loop pattern, breath can both flow to reciprocal unit 6.Second bypass channel 53 that is used for breath also can be connected the breathing circuit end in the downstream of second check valve 22, but this connection will make device complicated more, need extra valve to guide air-flow into required direction.
Fig. 2 is illustrated in another embodiment of the reciprocal unit 6 that uses in the anesthesiaing system.Back and forth unit 6 comprises long current path 41, its function different with shown in Fig. 1.Path 41 is the parts that are in the continuous flow path between described gas source 5 and the described breathing circuit 2.Utilization reciprocal gas gradient in current path 41 is separated with breathing gas respiratory organ gas.Measure in the reception information of air-flow in this expression, gas source 5 promotes to suck gas and arrives path 41 towards respiratory organ 1 and through sucking the flow control valve 7 of air-flow in order to control.This will promote main gas and further arrive the suction nozzle 18 of breathing circuit 2 and further arrive curee 4 from path 41.During exhaling, outlet valve 9 is opened, and discharges the pressure of path 41 and breathing circuit 2.The compliance driving gas of lungs leaves lungs and arrives path 41 through exhaust tube 19.Leave and during flowing through the outlet valve 9 of respiratory organ 1 from path 41 air-breathing, this promotes the respiratory organ end of the gas inlet passage 41 that loaded.Surpass and removed if flow to the live gas of breathing circuit 2, then cross the flow through path 41 of reciprocal unit 6 and also removed of many parts by outlet valve 9.
Equally in Fig. 2, be used for air-breathing selector valve 50 and be arranged in order to sucking air-flows from gas source 5 guiding, or in the open loop pattern through first bypass channel 51 at CO
2The downstream of the remover 20 and first check valve 21 arrives breathing circuit 2, walks around CO
2The remover 20 and first check valve 21 both and arrive suction nozzle 18, perhaps in the rebreathing circuit pattern, arrive and be positioned at CO
2The upstream of remover 20 becomes the mobile reciprocal unit 6 that contacts with breathing circuit, and therefore sucking air communication crosses CO
2Remover 20, first check valve 21 and suction nozzle 18 guide curee's respiratory movement.In Fig. 1 and Fig. 2, selector valve 50 all is arranged in the upstream of reciprocal unit 6, in this case this reciprocal unit 6 part that can be respiratory organ 1.
Among Fig. 1, in order to guide the suction air-flow, being used for air-breathing selector valve 50 is applicable to and stop sucks air communication to first bypass channel 51 (if having selected the rebreathing circuit pattern) and be applicable to open and suck air communication to reciprocal unit 6, perhaps as alternative, be used for air-breathing selector valve 50 and be applicable to stop and suck air communication to reciprocal unit 6 (if having selected the open loop pattern) and be applicable to open and suck air communication to first bypass channel 51.First bypass channel 51 can be connected to breathing circuit 2 in the upstream or the downstream of the breathing circuit connecting portion of path 35, but preferably, first bypass channel 51 is connected between the air-breathing branch road 24 and first check valve 21 of branch units 23.
In Fig. 2, as the embodiment among Fig. 1, the selector valve 52 that is used to exhale is arranged such that with second bypass channel 53 curee's expiration is more easy.The selector valve that is used to exhale 52 that one end of second bypass channel 53 is connected to breathing circuit 2 is arranged between the expiration branch road 25 of second check valve 22 and branch units 23, so that the exhaled air flow in the exhaust tube 19 of guiding breathing circuit 2, or in the open loop pattern, arrive second pipeline 10 (this second pipeline 10 can be between reciprocal unit 6 and the outlet valve 9) in the downstream of reciprocal unit 6 through second bypass channel 53, allow extra breath of the curee 4 to leave breathing circuit 2, walked around reciprocal unit 6 thus, or in the rebreathing circuit pattern, flowed to reciprocal unit 6 by second check valve 22.
In order to guide exhaled air flow, the selector valve 52 that is used to exhale is applicable to that the prevention exhaled air flow leads to second bypass channel 53 (if having selected the rebreathing circuit pattern) and is applicable to that opening exhaled air flow leads to reciprocal unit 6, perhaps as alternative, the selector valve 52 that is used to exhale is applicable to stop exhaled air flow to lead to reciprocal unit 6 (if having selected the open loop pattern) and be applicable to opens exhaled air flow through between second bypass channel, 53 reciprocal unit 6 of arrival and the outlet valve 9.Shown in Fig. 1 and Fig. 2, recognize that importantly this second bypass channel 53 has superiority, but non-imperative, because the most important thing is to arrange first bypass channel 51 as indicated above.Therefore, except the situation of breathing pattern again and also have the situation of open loop pattern, exhaled air flow can flow to reciprocal unit 6.The second bypass channel end of selector valve 52 that is used for exhaling and breathing circuit 2 can also be positioned at the downstream of second check valve 22, but this layout will make device complicated more, need extra valve to guide air-flow into required direction.
In addition, the used operation principle of the embodiment among Fig. 2 is with above described identical in conjunction with Fig. 1.Identical among gas mixer 3 and Fig. 1.
Fig. 3, Fig. 4, Fig. 5 and Fig. 6 show a solution, it can use in Fig. 1 and Fig. 2, with by replacing the selector valve 52 that is used for air-breathing selector valve 50 and is used to exhale with flow being used for of being communicated with air-breathing and both single combination type selector valve 54 of exhaling of 53 one-tenth of first bypass channel 51 and second bypass channels.According to a kind of possibility, this selector valve 54 is arranged to suck gas in order to walk around reciprocal unit 6 to breathing circuit 2 supplies, and also has a kind of possibility to arrange simultaneously that in order to walk around reciprocal unit the exhaled air flow with breathing circuit emits.When selecting the open loop pattern, be in primary importance be used for air-breathing and both selector valve 54 of exhaling can be with CO
2Remover and reciprocal unit 6 isolate and separate, and when selecting the rebreathing circuit pattern, then combination type selector valve 54 can be with CO conversely in the second position
2Remover is connected with reciprocal unit 6.
In Fig. 3 and Fig. 4, be used for air-breathing and both selector valve 54 of exhaling is rotary valves, it can rotate to the second position from primary importance.In Fig. 3, selection be the open loop pattern, wherein be used for air-breathing and both selector valve 54 of exhaling is in primary importance, and stop thus and suck air-flow through reciprocal unit 6 and CO
2Remover 20 stops exhaled air flow to lead to reciprocal unit 6 simultaneously, but it is walked around.Sucking air-flow is used for air-breathing and both selector valves 54 of expiration along 8 arrival of first pipeline, in this primary importance, this selector valve guiding gas arrives suction nozzles 18 and branch units 23 and arrives curee 4 through first bypass channel 51, walks around reciprocal unit 6 and CO
2Remover 20 both.When exhaling, the guiding breath flows through branch units 23 and exhaust tube 19 arrival are used for air-breathing and both selector valves 54 of expiration, this selector valve 54 flows through second bypass channel 53 at primary importance guiding breath and arrives second pipeline 10 that is used for breath, walks around reciprocal unit 6.
Fig. 4 is expressed as follows situation, and what promptly select in this case is the rebreathing circuit pattern, is used for air-breathing and both selector valve 54 of exhaling is in the second position, and guiding sucks the reciprocal unit 6 of gas flow, so gas flows through CO in breathing circuit
2Remover 20, first check valve 21, suction nozzle 18 and branch units 23 arrive curee 4.During expiration phase, breath flows to reciprocal unit 6 so that breath is discharged in second pipeline 10 through branch units 23, exhaust tube 19 and second check valve 22.
Be used for air-breathing and both selector valve 54 of exhaling and can also be the slide-valve as shown in Fig. 5 and Fig. 6, this slide-valve has the chance of selecting between the primary importance and the second position.Sliding part 55 can slide up and down so that find or the primary importance or the second position.In primary importance as shown in Figure 5, sliding part 55 has been closed the suction air communication to reciprocal unit 6 with through CO
2Remover.And, closed the breath that leads to reciprocal unit 6.Sucking air-flow is used for air-breathing and both selector valves 54 of expiration along 8 arrival of first pipeline, it arrives suction nozzle 18 and further arrives branch units 23 and arrival curee 4 through first bypass channel 51 at this primary importance steering current, walks around reciprocal unit 6 and CO
2Remover 20 both.When exhaling, breath is used for air-breathing and both selector valves 54 of expiration through guiding through branch units 23 and exhaust tube 19 arrival, it arrives second pipeline 10 that is used for breath at primary importance guiding breath through second bypass channel 53, walks around reciprocal unit 6.
What select in Fig. 6 is the rebreathing circuit pattern, wherein, is used for selector valve 54 air-breathing and that exhale and is in the second position, and guiding sucks air communication to reciprocal unit 6 and through CO
2Remover 20 arrives first check valve 21, and guiding sucks air-flow and arrives curee 4 through suction nozzle 18 and branch units 23.During expiration phase, breath flows to reciprocal unit 6 so that breath is discharged via second pipeline 10 from curee 4 flow through branch units 23, exhaust tube 19, second check valve 22.
With CO
2Remover 20 and reciprocal unit 6 isolate and separately, make the open loop pattern also can work as CO
2Remover 20 and back and forth using in the unavailable or situation when not required in unit 6.Given this, the solution that has two isolated breathing circuit systems in same apparatus has increased patient's safety and service efficiency.For example, in following situation, when promptly after the curee is anaesthetizing, needing respiratory care, can be with CO
2Remover 20 and back and forth unit 6 remove and safeguarded and be used for anesthesia next time (if using open loop pattern), and after maintenance, it can be attached in the system once more and can not produce pollution.
Removable CO
2Remover 20 and reciprocal unit 6 make that the piecemeal solutions that are used for rebreathing circuit are developed, and this mode allows promptly to abandon after the feasible usefulness.It also helps the routine cleaning of system and safeguards, even if when respiratory organ 1 in use and when be used for air-breathing and exhale both single selector valve 54 (for example, rotary valve or slide-valve) in use.Rebreathing circuit is connected in the system by three connecting devices shown in Fig. 3-6, and they are close to each other, makes CO
2Simple, the quick and safety of separating of remover 20 and reciprocal unit 6.
When respiratory system was opened in use, isolated respiratory system had again reduced reciprocal unit 6 and CO
2The demand of remover 20.This has also reduced for the cleaning of respiratory system and the needs of maintenance again.This has cut down hospital's spending, and is lower because these elements need be changed the frequency of new element.
Conversion between open loop and rebreathing circuit system and vice versa becomes fast and safety, and it allows to use best breathing circuit for every kind of anesthesia type.
This written description has adopted the example that comprises optimal mode to come open the present invention, and makes any technical staff of this area can both make and use the present invention.The patentable scope of the present invention is defined by the claims, and can comprise thinkable other example of those skilled in the art.If having with the written language of claim, these other examples there is no different structural member, if perhaps these other examples comprise that the written language with claim does not have the equivalent constructions element of essence difference, think that then these other examples fall within the scope of the claims.
Claims (10)
1. one kind is used to supply breathing gas so that the device of breathing comprises:
Reciprocal unit, it receives and sucks air-flow, is suitable for the control breathing motion;
Be used to supply the gas mixer of fresh gas flow;
Breathing circuit, it is used for guiding exhaled air flow into described reciprocal unit, be used to guide fresh gas flow from described gas mixer so that breathe, and be used for guiding from described reciprocal unitary air-flow so that air-breathing, described breathing circuit comprises and is used for CO that carbon dioxide is removed from gas
2Remover; And
First bypass channel, it is walked around described reciprocal unit and described breathing circuit is connected to described suction air-flow in described reciprocal unitary upstream.
2. device according to claim 1 is characterized in that, described breathing circuit also comprises the air-breathing branch road of first check valve, suction nozzle and the branch units that are used to suck gas, allows gas from CO
2Remover flows through described first check valve, described suction nozzle and described air-breathing branch road so that the curee breathes.
3. device according to claim 1 is characterized in that, is provided with in described reciprocal unitary upstream to be used for air-breathing selector valve, so that described suction air-flow is connected to or described reciprocal unit or connect via described first bypass channel.
4. device according to claim 3 is characterized in that, is used for air-breathing described selector valve and is connected to described suction air-flow is supplied to described back and forth unitary first pipeline, and described first pipeline is positioned at described reciprocal unitary upstream.
5. device according to claim 1 is characterized in that described device also comprises second bypass channel, and described second bypass channel has an end can be connected to described breathing circuit in order to remove breath and to allow breath to walk around described reciprocal unit.
6. device according to claim 5, it is characterized in that, described breathing circuit also comprises the expiration branch road of second check valve, exhaust tube and the branch units that are used for breath, permission is flow through described expiration branch road and described exhaust tube from curee's breath, flows at the described expiration branch road of described branch units and the selector valve between described second check valve.
7. one kind is used to supply breathing gas so that the method for breathing comprises:
Supply sucks air-flow to reciprocal unit and moves in order to control breathing;
The supply fresh gas flow is to breathing circuit;
Exhaled air flow is guided to described reciprocal unit along breathing circuit, and the guiding fresh gas flow is so that breathe, and guiding from described reciprocal unitary air-flow so that air-breathing, and from described breathing circuit, removing carbon dioxide in the mobile gas; And
Select supply to suck air-flow, walk around described reciprocal unit to described breathing circuit.
8. method according to claim 7 is characterized in that, passes through CO
2Remover removes carbon dioxide, and supply sucks air-flow to the described selection of described breathing circuit and also is suitable for walking around described CO
2Remover.
9. one kind is used to supply breathing gas so that the device of breathing comprises:
Respiratory organ, it has along first pipeline and receive to suck air-flow and along the reciprocal unit of the second discharge of pipes exhaled air flow, described reciprocal unit is suitable for the control breathing motion;
Be used to supply fresh gas flow so that the gas mixer of breathing;
Breathing circuit, it is used for guiding exhaled air flow into described respiratory organ, be used to guide fresh gas flow from described gas mixer so that breathe, and be used to guide air-flow from respiratory organ so that air-breathing, described breathing circuit comprises the CO that is used for removing from gas carbon dioxide
2Remover; And
Connect first bypass channel of described first pipeline and described breathing circuit, and also comprise
Second bypass channel that connects described breathing circuit and described second pipeline, wherein, the two all is suitable for walking around described reciprocal unit described first bypass channel and described second bypass channel.
10. device according to claim 9 is characterized in that, described device also comprises:
With the air-breathing selector valve that is used for that described first bypass channel becomes to flow and is connected, it is used for guiding and sucks air-flow or lead to reciprocal unit or described first bypass channel of process; And
With the selector valve that is used to exhale that described second bypass channel becomes to flow and be connected, it is used to guide exhaled air flow or leads to described reciprocal unit or lead to described second pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101514061A CN102160907A (en) | 2010-02-17 | 2010-02-17 | Device and method for supplying breathing air to breathe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101514061A CN102160907A (en) | 2010-02-17 | 2010-02-17 | Device and method for supplying breathing air to breathe |
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| CN102160907A true CN102160907A (en) | 2011-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010101514061A Pending CN102160907A (en) | 2010-02-17 | 2010-02-17 | Device and method for supplying breathing air to breathe |
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| CN (1) | CN102160907A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105517612A (en) * | 2014-12-02 | 2016-04-20 | 深圳迈瑞生物医疗电子股份有限公司 | Anesthesia machine respiratory system and anesthesia machine |
| CN107666934A (en) * | 2015-03-31 | 2018-02-06 | 蒸汽热能公司 | The system and method that close patient for respiratory therapy carries out steam-transfer |
| CN110612137A (en) * | 2017-03-23 | 2019-12-24 | 通用电气公司 | Medical vaporizer with carrier gas characterization, measurement, and/or compensation |
-
2010
- 2010-02-17 CN CN2010101514061A patent/CN102160907A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105517612A (en) * | 2014-12-02 | 2016-04-20 | 深圳迈瑞生物医疗电子股份有限公司 | Anesthesia machine respiratory system and anesthesia machine |
| WO2016086354A1 (en) * | 2014-12-02 | 2016-06-09 | 深圳迈瑞生物医疗电子股份有限公司 | Anesthesia machine respiratory system and anesthesia machine |
| CN105517612B (en) * | 2014-12-02 | 2018-06-12 | 深圳迈瑞生物医疗电子股份有限公司 | Anesthesia machine respiratory system and anesthesia machine |
| CN107666934A (en) * | 2015-03-31 | 2018-02-06 | 蒸汽热能公司 | The system and method that close patient for respiratory therapy carries out steam-transfer |
| US11497880B2 (en) | 2015-03-31 | 2022-11-15 | Vapotherm, Inc. | Systems and methods for patient-proximate vapor transfer for respiratory therapy |
| CN110612137A (en) * | 2017-03-23 | 2019-12-24 | 通用电气公司 | Medical vaporizer with carrier gas characterization, measurement, and/or compensation |
| CN110612137B (en) * | 2017-03-23 | 2022-08-02 | 通用电气公司 | Medical vaporizer with carrier gas characterization, measurement, and/or compensation |
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Application publication date: 20110824 |