CN210408672U - Circulating type inhalation anesthesia device - Google Patents
Circulating type inhalation anesthesia device Download PDFInfo
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- CN210408672U CN210408672U CN201821587833.2U CN201821587833U CN210408672U CN 210408672 U CN210408672 U CN 210408672U CN 201821587833 U CN201821587833 U CN 201821587833U CN 210408672 U CN210408672 U CN 210408672U
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Abstract
The utility model discloses a circulating inhalation anesthesia device, which comprises an oxygen tank, a first gas flowmeter, an anesthesia gas volatilization tank, a mask and a waste gas absorption tank; the outlet of the oxygen tank is connected with the inlet of a first gas flowmeter, and the outlet of the first gas flowmeter is connected with the inlet of an anesthetic gas volatilization tank; the outlet of the anesthetic gas volatilization tank is converged with the outlet of the micro vacuum pump and then is connected with the inlet of the second gas flowmeter and the inlet of the mask, and a large gas storage bag is arranged on a pipeline in front of the second gas flowmeter. The outlet of the mask is respectively connected with the inlet of the waste gas absorption tank and the inlet of the circulating gas filter box, and the outlet of the circulating gas filter box is connected with the micro vacuum pump in series and then is converged with the outlet of the anesthetic gas volatilization tank to enter the anesthetic passage again for circulation. The anesthesia device has the advantages of good sealing performance, reliable anesthesia effect, high safety, small influence on animal physiological indexes, gas recycling, high anesthesia efficiency, easy control of anesthesia and revival time and suitability for anesthesia operation of small animals.
Description
Technical Field
The utility model relates to an anaesthesia device especially relates to a circulating anesthesia device that inhales that toy used, anaesthetizes experimental animals in scientific research and the teaching experiments such as mainly used life science, medical science, pharmacology, food science, veterinary medicine, belongs to anaesthesia device field for the toy.
Background
Animal experiments are an essential part in scientific research and teaching experiments of life science, medicine, pharmacology, food science, veterinary medicine and the like, rats are commonly used experimental animals in animal medicine research, and rats are commonly used as experimental animal models in cardiovascular system, drug nutrition metabolism, geriatrics, hematology, tumor, radiobiology and immunology research.
Researches find that the heart rate and the blood oxygen concentration of rats using the inhalation anesthesia are more stable, the cardiac function level of animals can be better maintained in the operation, the inhalation anesthesia mode also has the advantages of short induction time, fast anesthesia, fast recovery and easy control of the anesthesia depth, and the inhalation anesthesia gradually replaces injection anesthesia to become the preferred mode of general anesthesia.
Most of the existing inhalation anesthesia apparatuses are suitable for large animals such as cats and dogs, and are not suitable for small animals such as rats because the trachea cannula is suitable for connecting with the trachea of the animals during the anesthesia process. Although some small inhalation anaesthesia devices are suitable for small animals, most of the devices are in a fully open or semi-open state, and gases unused by the animals are directly discharged into the atmosphere without recycling, so that the waste of resources and the pollution to the environment are caused.
The mask used by the existing inhalation anesthesia device in the market is mostly suitable for large animals such as cats and dogs, and the stress degree is insufficient, so that the nose and the mouth of the animal are easily exposed from the mask. In the general anesthesia process of small animals, the head of the animal is usually placed in a mask, and then anesthetic gas is introduced for anesthesia maintenance, but in the process, the head of the animal cannot be tightly connected with the mask, so that the anesthetic gas leaks into the air, the environment is further polluted, and the health of operators is harmed. Although there are reports of transoral tracheal intubation of rats, the procedure is difficult and inconvenient to popularize (Tomasello G1, Damiani F, Cassata G, Palombo VD, Sinagra E, Damiani P, Bruno A, Cicero L, Cupido F, Carini F, Lo Monte AI. simple and fast oral administration procedure in rates. ActaBiomed.2016,87(1): 13-5.). The masks suitable for small animals such as rats are mostly fully open, and anesthetic gas which is not utilized by the rats is directly discharged into the air without being recovered, so that waste and pollution are caused.
Therefore, although the simple rat respiratory anesthesia device in the prior art can basically meet the purpose of anesthesia of rats, the simple rat respiratory anesthesia device has the following defects in different degrees:
(1) the anesthesia speed is slow, the anesthesia efficiency is low, and the anesthesia process can not be accurately controlled in real time.
(2) Although the waste gas recovery bottle is arranged, the anesthetic gas can not be recycled, so that the utilization rate of the anesthetic is greatly reduced;
(3) the existing device has poor tightness, particularly the mask part, and easily causes the diffusion of anesthetic into the air, thereby not only wasting the anesthetic, but also harming the health of experimenters.
In view of the current situation, there is an urgent need for a multichannel inhalation anesthetic device for small animals, which has good sealing performance, high safety, gas recycling, and high anesthetic efficiency.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned not enough of current rat anaesthesia device, the utility model provides a but the leakproofness is good, the security is high, cyclic utilization is gaseous, anaesthesia efficiency is higher circulating anesthesia device of inhaling that can be applicable to the rat. A circulating type inhalation anesthesia device with good tightness, high anesthesia efficiency and safe use.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a circulating inhalation anesthesia device comprises an oxygen tank, a first gas flowmeter, an anesthesia gas volatilization tank, a mask and a waste gas absorption tank; the outlet of the first gas flowmeter is connected with the inlet of the anesthetic gas volatilization tank through a pipeline, and the outlet of the anesthetic gas volatilization tank is connected with the inlet of the mask through a second gas flowmeter and a pipeline; the outlet of the mask is connected with the waste gas absorption tank; wherein the outlet of the anesthetic gas volatilization pot is also converged with the outlet of a micro vacuum pump and then is sequentially connected with the second gas flowmeter and the inlet of the mask; the inlet of the micro vacuum pump is connected with the outlet of the mask after being connected with a circulating gas filter box in series; the outlet pipeline of the micro vacuum pump is provided with a large gas storage bag.
Because the tidal volume of the rat is small, most of oxygen and isoflurane are not inhaled by the rat, the anesthesia device is provided with a micro vacuum pump and circulating gasThe device comprises a filter box and a waste gas absorption tank, and an anesthetic gas circulating device is formed by the devices, an anesthetic gas volatilization tank and a mask, so that the unabsorbed anesthetic gas and oxygen of the rat can be recycled; the micro vacuum pump is arranged at the outlet of the circulating gas filter box, so that certain pumping force can be given to the circulating gas filter box, and the gas can be kept in one-way circulation; the circulating gas which does not enter the circulating gas filter box enters the waste gas absorption tank through the pipeline and is absorbed by the active carbon in the waste gas absorption tank; therefore, the anesthesia device can completely absorb CO exhaled by animals2The breathing circuit can repeatedly inhale anesthetic gas and anesthetic drugs, humidify and warm the air passage and protect the tracheal mucosa, and has the characteristics and advantages of a semi-closed breathing circuit.
When maintaining anesthesia, adjusting the flow meter of the administration part to make the oxygen input flow rate be 0.15L/min; meanwhile, the gas flow of the flowmeter of the mask part is adjusted to be 0.2L/min, the concentration of isoflurane is adjusted to be 2.5%, a digital pressure gauge is connected with the tail end of the waste gas absorption tube, the pressure at the tail end of the waste gas absorption tube is close to 0 by adjusting the flow rate of the micro vacuum pump, and then the waste gas absorption tube is connected with a waste gas absorption tank, so that the anesthetic gas which is not inhaled by rats can be reused, the waste gas emission and the loss of the anesthetic gas are reduced, and the utilization rate of the anesthetic gas is improved. In the operation verification, the rat is maintained to be anesthetized by adopting the mode, the rat has good breathing state and stable breathing, the color of the visible mucous membrane is normal, and the blood oxygen can be maintained to be more than 98%.
As the utility model discloses a circulating anesthesia device that inhales's an preferred embodiment, the gaseous filter cassette of circulation preferably adopt ya keli box, utilize the baffle to separate for two cavities between this yakeli box's both ends, with connecting the intercommunication between two cavities, fill up soda lime in two cavities.
As a preferred embodiment of the circulating inhalation anesthesia apparatus of the present invention, an anesthesia induction box is further provided, the anesthesia induction box is provided with an air inlet and an air outlet, the air inlet is connected to a first three-way valve disposed on a pipeline between the large gas storage bag and the second gas flow meter through a pipeline, and the air outlet is connected to a second three-way valve disposed on a pipeline between the outlet of the mask and the air inlet of the circulating gas filter box through a pipeline; furthermore, the anesthesia induction box is preferably a closed acrylic box, and the bottom of the anesthesia induction box is fully paved with sodium lime.
As a preferred embodiment of the circulating inhalation anesthesia apparatus of the present invention, the face mask is an umbrella-shaped face mask, a center hole sealed with an elastic material is provided at the center of the bottom surface of the umbrella-shaped face mask, and the center hole is preferably conical; furthermore, the umbrella-shaped mask consists of a conical main body and a bottom surface made of rubber, and the middle part of the bottom surface is provided with a central hole which is matched with the upper jaw and the lower jaw of a rat through elastic deformation; the conical main body is provided with an inlet and an outlet, and the top of the mask is provided with a small air storage bag.
The mask of the circular inhalation anesthesia device of the utility model is an umbrella-shaped breathing mask, and the center hole is sealed by elastic materials and is used for fixing the upper and lower jaws of a rat. The central hole has elasticity, so that the tension degree is good, the mouth and the nose of the rat can be firmly fixed in the mask, the tightness can be ensured, and the animal is not suffocated. The exit linkage of face guard is retrieving the jar, and the rat does not have absorptive gas and can pass through to retrieve jar and absorb carbon dioxide and water, leaves isoflurane and oxygen and joins with new anesthetic gas, lets the rat reuse, has reached resources are saved and safe effect.
As a preferred embodiment of the circulating type inhalation anesthesia apparatus of the present invention, a digital pressure gauge is installed at the inlet of the waste gas absorption tank; the waste gas absorption tank is filled with active carbon.
The utility model of the circulating inhalation anesthesia device mainly comprises three parts, namely a drug administration part, an induction part and a mask part; the induction part is a closed container, and has an inlet and an outlet respectively connected with the administration part, the mask part is assembled by a tee joint, the tail end is connected with an umbrella-shaped respiratory mask, the rubber seal is arranged, and a small hole is reserved for placing the head of an animal. The inlet and outlet passages of the mask portion are respectively connected with the administration portion. The drug administration part consists of an anesthetic volatilization tank and a gas flowmeter. When the drug is administered, the oxygen tank is connected, the oxygen mixed with the anesthetic is conveyed into the induction box of the induction part through the anesthetic volatilization tank, the gas exhaled by the animal in the induction box absorbs carbon dioxide through the gas recovery bottle, and the residual gas, the fresh oxygen and the anesthetic are mixed and then enter the drug administration passage again, so that the circulation is repeated. The mask part and the induction part are two different paths, when in use, the anesthesia path of the induction part can be blocked to connect the mask part, and conversely, the anesthesia path of the mask part can be blocked by the induction part. The whole system is also provided with a gas pressure gauge for monitoring the air pressure in the passage, so that the regulation and control at any time are convenient, and simultaneously, each branch is provided with a flow meter to control the opening and closing of the passage, so that the anesthesia amount of each anesthesia channel can be ensured. The device still is provided with the waste gas absorption jar, avoids waste gas to emit into the air and causes the pollution harm laboratory technician health.
In order to verify the anesthesia effect of the anesthesia device of the utility model, the operation verification is carried out on the anesthesia effect of the rat by adopting the device. Use the utility model discloses the device carries out conventional operation with the rat anesthesia (open abdomen and explore and the gastrotomy), the time of each stage of record anesthesia in the art to breathe (RR), rhythm of the Heart (HR), blood oxygen (SpO2), systolic pressure (SBP), Mean Arterial Pressure (MAP) and body temperature (T) with the continuous dynamic monitoring rat of physiological monitor, observe the rat simultaneously and calm, analgesia and muscle pine effect, with the security and the usability of evaluation anesthesia device. The observation result shows that the anesthesia induction time of the rat by using the anesthesia device of the utility model is 2.20 plus or minus 0.45min, the time required for reaching the surgical anesthesia is 2.12 plus or minus 0.36min, the anesthesia maintenance and revival time is 45.18 plus or minus 0.12min and 2.40 plus or minus 0.55 respectively, and the total anesthesia time is 51.40 plus or minus 0.24 min. The rat has good effects of sedation, analgesia and muscle relaxation in operation, and HR and SpO are performed at 10 min, 20 min, 30 min and 45min of the operation2RR, T, SBP and MAP are all kept stable, and each physiological index has no significant difference (p) at each time point>0.05). The experimental result proves that the anesthesia device of the utility model has the advantages of reliable anesthesia effect, safety and controllability for the rat, fast anesthesia induction and revival time, and capability of completely meeting the requirement of the operation on anesthesia.
The utility model discloses circulating anesthesia device that inhales mainly has following several beneficial effects in the aspect of:
(1) the traditional mask is replaced by the elastic rubber mask in the anesthesia device, so that the problem of poor air tightness at the opening of the mask is solved; this face guard is an umbelliform respirator, and the center takes the rubber hole, fixes the cover at the maxilla position from top to bottom of rat with the rubber mouth, has both guaranteed that the gas tightness of face guard is good, has also prevented that the face guard from blocking the rat breathing excessively tightly.
(2) The mask of the anesthesia device is an umbrella-shaped breathing mask, the center of the mask is provided with a rubber hole, the upper part of the mask is also provided with a small air bag, the air pressure entering the mask can be buffered, meanwhile, the effect of pressure indication is also achieved, the situation that the positive pressure in the mask is too large and the influence on the breathing of rats or the damage to the lungs is effectively avoided.
(3) The anesthetic device can recycle the anesthetic gas and oxygen which are not absorbed by the rat by forming an anesthetic gas circulating unit through the circulating gas filter box, the micro vacuum pump and the waste gas absorption tank.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is an axial cross-sectional view of the mask of the present invention;
fig. 3 is an explanatory view of the working principle of the mask of the present invention.
Description of reference numerals: 1. the gas-liquid separation device comprises an oxygen tank, 2, an oxygen pressure reducer, 3, a first gas flowmeter, 4, an anesthetic gas volatilization tank, 5, a first three-way valve, 6, an anesthetic induction box, 7, a second three-way valve, 8, a circulating gas filter box, 81, a partition plate, 82, a connecting pipe, 9, a micro vacuum pump, 10, the large gas storage bag, 11, the second gas flowmeter, 12, a mask, 121, a conical main body of the mask, 122, the bottom surface of the mask, 123, a central hole, 124, a gas inlet of the mask, 125, a gas outlet of the mask, 13, the small gas storage bag, 14, a waste gas absorption tank and 15, and a digital pressure gauge.
Detailed Description
The invention will be further described with reference to the accompanying drawings, and the advantages and features of the invention will become more apparent as the description proceeds. These examples are merely illustrative and do not limit the scope of the invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and substitutions are within the scope of the invention.
Referring to fig. 1, the utility model relates to a circulating inhalation anesthesia apparatus, which comprises an oxygen tank 1, a first gas flowmeter 3, an anesthetic gas volatilization tank 4, an anesthetic induction box 6, a circulating gas filter box 8, a micro vacuum pump 9, a large gas storage bag 10, a second gas flowmeter 11, a face mask 12, a small gas storage bag 13 and a waste gas absorption tank 14; wherein, the export of oxygen jar 1 passes through oxygen pressure reducer 2 and pipeline and the entry linkage of first gas flowmeter 3, and the export of first gas flowmeter 3 passes through the pipeline and volatilizees the entry linkage of jar 4 with anesthetic gas, and the exit linkage of jar 4 that volatilizees of this anesthetic gas has three return circuits: the first path is connected with the outlet of a micro vacuum pump 9, and the inlet of the micro vacuum pump 9 is connected with the outlet of a mask 12, the outlet of an anesthesia induction box 6 and the inlet of an exhaust gas absorption tank 14 respectively after being connected with a circulating gas filter box 8 in series; the second path is connected with the inlet of an anesthesia induction box 6 through a first three-way valve 5, and the outlet of the anesthesia induction box 6 is connected with the outlet of a face mask 12 and the inlet of a circulating gas filter box 8 through a second three-way valve 7; the third path is connected via a second gas flow meter 11 and a conduit to the inlet of a face mask 12, the outlet of which face mask 12 has been connected to an exhaust absorption tank 14. The outlet pipeline of the micro vacuum pump 9 is provided with a large air storage bag 10, and the face mask 12 is provided with a small air storage bag 13. A digital pressure gauge 15 is arranged at the inlet of the waste gas absorption tank 14. The waste gas absorption tank 14 is filled with activated carbon.
The anesthesia device is provided with a micro vacuum pump 9, a circulating gas filter box 8 and an exhaust gas absorption tank 14, and the devices, the anesthesia gas volatilization tank 4 and the mask 12 form an anesthesia gas circulating device, so that the unabsorbed anesthesia gas and oxygen of rats can be recycled. The micro vacuum pump is arranged at the outlet of the circulating gas filter box, so that certain pumping force can be given to the circulating gas filter box 8, and the gas keeps unidirectional circulation; the circulating gas which does not enter the circulating gas filter cassette 8 enters the waste gas absorption tank 14 through a pipeline and is absorbed by the activated carbon therein.
When maintaining anesthesia, adjusting the first gas flowmeter 3 of the administration part to make the oxygen input flow rate be 0.15L/min; meanwhile, the gas flow of the second gas flowmeter 11 close to the mask 12 is adjusted to be 0.2L/min, the concentration of isoflurane is adjusted to be 2.5%, a digital pressure gauge is connected with the tail end of the waste gas absorption pipe, the pressure at the tail end of the waste gas absorption pipe is close to 0 by adjusting the flow rate of the micro vacuum pump 9, then the waste gas absorption pipe is connected with the waste gas absorption tank 14, so that the anesthetic gas which is not inhaled by rats can be reused, the exhaust gas emission and the loss of the anesthetic gas are reduced, and the utilization rate of the anesthetic gas is improved. In the operation verification, the rat is maintained to be anesthetized by adopting the mode, the rat has good breathing state and stable breathing, the color of the visible mucous membrane is normal, and the blood oxygen can be maintained to be more than 98%.
As a preferred embodiment, circulating gas filter cartridge 8 adopt ya keli box, utilize the baffle to separate for two cavities between this yakeli box's both ends, with the connecting pipe intercommunication between two cavities, fill up soda lime in two cavities, form the series structure of two cavities, strengthened the filter effect.
As a preferred embodiment of the utility model, the anesthesia induction box is an airtight acrylic box, and soda lime is paved at the bottom of the anesthesia induction box.
Referring to fig. 2 and 3, the mask 12 is composed of a conical body 121 and a bottom surface 122 made of rubber, and a central hole 123 capable of being matched with the upper jaw and the lower jaw of a rat through elastic deformation is formed in the middle of the bottom surface 122; an inlet 124 and an outlet 125 are provided in the conical body 121 and are connected to the small reservoir 13 by means of separate passages. The conical body 121 may be made of plastic or the entire face mask 12 may be made of rubber. Since the central hole 123 of the bottom surface 122 has a conical shape (or other shape with thin edges) and the edges can be elastically deformed under the application of a small pressure, when in use, once the mouth a of a rat to be tested is inserted into the central hole 123, the edges of the central hole 123 are bent upward (see fig. 3) and are in close contact with the upper and lower jaws of the rat, so that the anesthetic gas in the mask 12 is not substantially leaked from the central hole 123. The central hole 123 has elasticity, so that the tension degree is good, the mouth and the nose of the rat can be firmly fixed in the mask 12, the tightness can be ensured, and the animal is not suffocated. The outlet of the face mask 12 is connected with a circulating gas filter box 8 and an exhaust gas absorption tank 14, and the gas which is not absorbed by the rat can absorb carbon dioxide and water through the circulating gas filter box 8, leave isoflurane and oxygen to be converged with new anesthetic gas, so that the rat can be reused, and the effects of saving resources and safety are achieved.
The utility model discloses a theory of operation is: the anesthesia device is divided into an anesthesia induction circulation path and an anesthesia maintenance circulation path, which are respectively described as follows:
1. anesthesia induction circulation pathway:
the anesthesia induction circulation path is as follows: the output of oxygen jar 1 passes through the pipeline and is connected with the input of first gas flowmeter 3, the output of first gas flowmeter 3 passes through the pipe and is connected with the input of anesthetic gas jar 4 that volatilizees, the output of anesthetic gas jar 4 that volatilizees joins with micro vacuum pump 9's output, anesthetic gas stores and the buffering back through big gas storage bag 10, through the induced box 6 of first three-way valve 5 control entering anesthesia, oxygen and anesthetic agent are inhaled the back through the rat, the CO of exhaling2And the residual gas is controlled to enter a circulating gas filter box 8 through a second three-way valve 7 to remove CO2Filtering, and allowing the residual oxygen and anesthetic gas to reenter the anesthesia induction path for recycling under the suction of the micro vacuum pump 9. The mixed gas which is not sucked into the circulating gas filter cassette 8 by the micro vacuum pump 9 is sucked by the off gas suction tank 14. The inlet (end M) of the waste gas absorption tank 14 is connected with a digital pressure gauge 15, and the pumping flow of the micro vacuum pump 9 is adjusted to enable the output of the mixed gas at the end M to be close to 0kPa, so that the discharge of the mixed gas can be reduced as much as possible, and the utilization rate of the mixed gas can be improved.
2. Anesthesia maintenance circulation pathway: the output end of the oxygen tank 1 passes through a pipelineThe output end of the first gas flowmeter 3 is connected with the input end of an anesthetic gas volatilization tank 4 through a guide pipe, the output end of the anesthetic gas volatilization tank 4 is converged with the output end of a micro vacuum pump 9, the output end of the anesthetic gas volatilization tank 4 is stored and buffered through a large gas storage bag 10 and then is controlled to enter a second gas flowmeter 11 through a first three-way valve 5, oxygen and anesthetic are inhaled by rats in a face mask 12, and exhaled CO is2And the residual gas is controlled to enter a circulating gas filter box 8 through a second three-way valve 7 to remove CO2Filtering, and allowing the residual oxygen and anesthetic gas to reenter the anesthetic maintaining passage for recycling under the suction of the micro vacuum pump 9. The small reservoir 13 on the face mask 12 acts as a pressure buffer and indicator.
Claims (10)
1. A circulating inhalation anesthesia device comprises an oxygen tank (1), a first gas flowmeter (3), an anesthesia gas volatilization tank (4), a mask (12) and a waste gas absorption tank (14); wherein, the outlet of the oxygen tank (1) is connected with the inlet of the first gas flowmeter (3) through an oxygen pressure reducer (2) and a pipeline, and the outlet of the first gas flowmeter (3) is connected with the inlet of the anesthetic gas volatilization tank (4) through a pipeline; the outlet of the anesthetic gas volatilization pot (4) is connected with the inlet of a mask (12) through a second gas flowmeter (11) and a pipeline; the outlet of the mask (12) is connected with an exhaust gas absorption tank (14); the device is characterized in that an outlet of the anesthetic gas volatilization pot (4) is converged with an air outlet of a micro vacuum pump (9) and then sequentially connected with inlets of a second gas flowmeter (11) and a face mask (12), an air inlet of the micro vacuum pump (9) is connected with an air outlet of a circulating gas filter box (8) through a pipeline, and an air inlet of the circulating gas filter box (8) is connected with an outlet (125) of the face mask (12) through a pipeline; a large gas storage bag (10) is arranged on a pipeline between the gas outlet of the micro vacuum pump (9) and the second gas flowmeter (11).
2. A circulatory inhalation anesthetic device according to claim 1, characterized in that an anesthesia induction box (6) is further provided, the anesthesia induction box (6) being provided with an air inlet and an air outlet, the air inlet being connected to a first three-way valve (5) provided in a conduit between the large air reservoir (10) and the second gas flow meter (11), and the air outlet being connected to a second three-way valve (7) provided in a conduit between the outlet (125) of the face mask (12) and the air inlet of the circulating gas filter box (8).
3. A circulating type inhalation anesthetic device according to claim 1 or 2, wherein the circulating gas filter cassette (8) is an acrylic cassette, the two ends of the acrylic cassette are divided into two chambers by a partition plate (81), the two chambers are communicated with each other by a connecting pipe (82), and the two chambers are filled with soda lime.
4. A circulatory inhalation anesthetic device in accordance with claim 2, wherein the anesthetic inducing box (6) is a closed acrylic box, and the bottom of the anesthetic inducing box (6) is filled with soda lime.
5. A cyclic inhalation anesthetic device in accordance with claim 1, wherein the face mask (12) is an umbrella-shaped face mask, and a center hole (123) sealed with an elastic material is provided at the center of the bottom surface of the umbrella-shaped face mask.
6. A circulatory inhalation anesthetic device according to claim 1 or 5, characterized in that the mask (12) is an umbrella-shaped mask comprising a conical body (121) and a bottom surface (122) made of rubber, and a central hole (123) for engaging with the upper and lower jaws of a rat by elastic deformation is provided in the middle of the bottom surface (122); an inlet (124) and an outlet (125) are provided on the conical body (121).
7. A circulating inhalation anesthetic device in accordance with claim 6, characterized in that a small air reservoir (13) is provided at the top of the conical main body of the mask (12).
8. A circulating inhalation anesthetic device in accordance with claim 6, characterized in that the central hole (123) is conical.
9. A cyclic inhalation anesthetic device in accordance with claim 1, characterized in that a digital pressure gauge (15) is provided at an inlet of the exhaust gas absorption tank (14).
10. A circulating type inhalation anesthetic device according to claim 1, characterized in that activated carbon is contained in the exhaust gas absorption tank (14).
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| CN201821548954 | 2018-09-21 | ||
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108938141A (en) * | 2018-09-21 | 2018-12-07 | 北京农学院 | Circulating inhalation anaesthesia apparatus |
| CN112137754A (en) * | 2020-09-07 | 2020-12-29 | 苏州贝诺医疗器械有限公司 | Continuous inhalation anesthesia apparatus with induction function for animals |
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2018
- 2018-09-27 CN CN201821587833.2U patent/CN210408672U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108938141A (en) * | 2018-09-21 | 2018-12-07 | 北京农学院 | Circulating inhalation anaesthesia apparatus |
| CN108938141B (en) * | 2018-09-21 | 2024-02-02 | 北京农学院 | Circulation type inhalation anesthesia device |
| CN112137754A (en) * | 2020-09-07 | 2020-12-29 | 苏州贝诺医疗器械有限公司 | Continuous inhalation anesthesia apparatus with induction function for animals |
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