Medical anesthesia machine capable of preventing anesthetic backflow

Abstract

The present invention relates to the technical field of medical devices, and specifically to a medical anesthesia machine capable of preventing anesthetic reflux. The present invention comprises: a main body mechanism, a drug filling mechanism and a mask mechanism. The main body mechanism comprises a columnar shell and a support frame. An anti-skid column is fixedly installed on the top of the columnar shell, an anesthetic treatment medicine tube is installed on the anti-skid column, an anesthetic treatment medicine tube is fixedly connected to the inner wall of the anesthetic treatment medicine tube with an anesthetic evaporator, and a sealing plug is slidably embedded between the anesthetic treatment medicine tube and the anesthetic evaporator. During the atomization anesthesia process, the present invention can coordinate the operation of various components of the device through an automated control system according to the patient's inhalation and exhalation states, push the atomized anesthetic gas to be delivered to the mask for the patient to inhale during inhalation, stop the delivery in time and close the corresponding passage during exhalation, so that the anesthetic delivery is synchronized with the patient's breathing, which not only ensures the anesthesia effect but also greatly reduces the possibility of anesthetic reflux caused by reverse pressure difference.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, in particular to a medical anesthesia machine capable of preventing anesthetic backflow. Background Art

[0002] In modern medical surgery, when existing equipment is used, medical anesthesia machines play a vital role. They can accurately deliver anesthetics to patients, allowing them to enter a suitable anesthesia state to ensure the smooth progress of the operation.

[0003] In the current medical field, medical anesthesia machines have the phenomenon of anesthetic reflux. From the perspective of the impact on the anesthesia effect, anesthetic reflux interferes with the original accurate delivery dose of the anesthetic, and the accuracy of the dose is difficult to guarantee, which can easily cause the patient to fall into a dangerous situation of too light anesthesia or too deep anesthesia, bringing great risks to surgical safety and postoperative recovery. Secondly, anesthetic reflux will also have an adverse effect on the anesthesia machine itself. The refluxed anesthetic is often corrosive or carries impurities exhaled by the patient. They will come into contact with pipes and components, causing corrosion of these components, reducing their performance, and even polluting them, affecting their normal functions and shortening the service life of the anesthesia machine. Summary of the Invention

[0004] The object of the present invention is to provide a medical anesthesia machine capable of preventing anesthetic backflow, so as to solve the problems raised in the above background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions:

[0006] A medical anesthesia machine capable of preventing anesthetic backflow comprises: a main body mechanism, a drug filling mechanism, and a mask mechanism; the main body mechanism comprises a columnar housing; an anti-skid column is fixedly mounted on the top of the support frame; an anesthetic treatment tube is mounted on the anti-skid column; an anesthetic vaporizer is fixedly connected to the inner wall of the anesthetic treatment tube; a sealing plug is slidably embedded between the anesthetic treatment tube and the anesthetic vaporizer; the sealing plug is horizontally movable to push atomized gas to the mask mechanism;

[0007] The medicine filling mechanism is installed on one side of the outer wall of the main body mechanism and is used to transfer the medicine liquid into the interior of the main body mechanism;

[0008] The mask mechanism is connected to the main body mechanism and is used to assist the patient's anesthesia and breathing.

[0009] Preferably, the interior of the cylindrical shell is fixedly connected to an internal drive motor, the interior of the cylindrical shell is fixedly installed with an inner seat, the interior of the inner seat is provided with a bearing, the inner wall of the bearing is provided with a threaded rod, and the end of the threaded rod away from the bearing is fixedly connected to the output end of the internal drive motor.

[0010] Preferably, the outer surface of the threaded rod is threadedly connected to a linkage plate, a snap-fit ​​seat is fixedly installed on the top of the linkage plate, the snap-fit ​​seat and the columnar shell are slidably connected, and the top of the snap-fit ​​seat extends to the outside of the columnar shell, and a locking assembly is fixedly installed on the top of the columnar shell.

[0011] Preferably, a limiting rod is fixedly connected to the interior of the columnar housing, and the linkage plate is slidably embedded in the limiting rod.

[0012] Preferably, an injection valve is fixedly mounted on one side of the outer wall of the anesthetic treatment tube, an extension rod is fixedly connected to one side of the outer wall of the sealing plug, and one end of the extension rod away from the sealing plug is engaged with the engagement seat.

[0013] Preferably, the drug filling mechanism includes a mounting plate, the inner surface of the mounting plate is fixedly connected to a drug tube, and the outer surface of the drug tube is fixedly mounted with a plurality of electric infusion pumps.

[0014] Preferably, the input ends of the plurality of electric infusion pumps are all threadedly connected to medicine bottles, the input end of the medicine tube is fixedly mounted with a diaphragm pump, and two circulation ports are opened on the top of the diaphragm pump.

[0015] Preferably, the output end of the drug tube is fixedly connected to a hose A, a peristaltic pump is fixedly installed on the output end of the hose A, a hose B is fixedly installed on the output end of the peristaltic pump, an injection valve is fixedly installed on one side of the outer wall of the anesthetic treatment drug tube, and the output end of the hose B is fixedly connected to the input end of the injection valve.

[0016] Preferably, the mask mechanism includes a mask body, the inner surface of the mask body is provided with two thermal flow sensors, an air valve is fixedly installed at the input end of the mask body, a hose C is fixedly installed at the input end of the air valve, a connector is fixedly installed at the output end of the anesthetic treatment tube, and the output end of the hose C is fixedly installed to the output end of the connector.

[0017] Preferably, a multi-channel solenoid valve is fixedly installed on the output end of the mask body, and a filter plate is fixedly installed on the output end of the multi-channel solenoid valve.

[0018] Beneficial effects of the present invention:

[0019] 1. During the atomization anesthesia process, the present invention can coordinate the operation of various components of the device through an automated control system according to the patient's inhalation and exhalation states. During inhalation, the atomized anesthetic gas is pushed to the mask for the patient to inhale. During exhalation, the delivery is stopped in time and the corresponding passage is closed, so that the anesthetic delivery is synchronized with the patient's breathing, which not only ensures the anesthetic effect, but also greatly reduces the possibility of anesthetic reflux caused by reverse pressure difference, thereby improving the safety and effectiveness of the anesthesia process.

[0020] 2. During use, the present invention can effectively control the amount of different liquid medicines input according to the body shape of different patients, which helps to ensure that the various components of the anesthetic are mixed in an accurate proportion, ensure the stability and safety of the anesthetic effect, and avoid problems such as excessive or shallow anesthesia caused by inaccurate dosage.

[0021] 3. The present invention forms a complete system from the preparation of the drug solution to the completion of the anesthetic, which improves the stability of each link of the anesthesia operation as a whole, ensures the safety of the patient, and also helps to improve the success rate of anesthesia and the anesthesia experience of the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a main structural perspective diagram of the present invention;

[0025] Figure 3 It is a cutaway perspective view of the main mechanism of the present invention;

[0026] Figure 4 This is a three-dimensional exploded view of the main mechanism of the present invention;

[0027] Figure 5 A three-dimensional diagram of the drug filling mechanism;

[0028] Figure 6 For the present invention Figure 5 A magnified view of the structure at A in FIG;

[0029] Figure 7 A three-dimensional diagram of the mask mechanism of the present invention;

[0030] Figure 8 It is a plan view of the mask body in the present invention.

[0031] The reference numerals in the figures are as follows:

[0032] 1. Main body; 11. Columnar shell; 111. Support frame; 112. Anti-skid column; 12. Internal drive motor; 13. Inner seat; 131. Bearing; 132. Threaded rod; 14. Limit rod; 15. Linkage plate; 151. Snap-fit ​​seat; 16. Locking assembly; 17. Anesthetic agent handling tube; 171. Connector; 172. Anesthetic agent vaporizer; 173. Injection valve; 18. Sealing plug; 181. Extension rod; 2. Drug filling mechanism; 21. Mounting plate; 211. Drug tube; 22. Electric infusion pump; 221. Medicine bottle; 23. Diaphragm pump; 231. Circulation port; 24. Hose A; 25. Peristaltic pump; 26. Hose B; 3. Mask mechanism; 31. Mask body; 311. Thermal flow sensor; 32. Air valve; 321. Hose C; 33. Multi-channel solenoid valve; 331. Filter plate. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] like Figure 1-8 A medical anesthesia machine capable of preventing anesthetic backflow comprises: a main body mechanism 1, a drug filling mechanism 2 and a mask mechanism 3, wherein the main body mechanism 1 comprises a columnar housing 11, a non-slip column 112 is fixedly mounted on the top of the support frame 111, an anesthetic treatment drug tube 17 is mounted on the non-slip column 112, an anesthetic treatment drug tube 17 is fixedly connected to the inner wall of the anesthetic treatment drug tube 17 with an anesthetic evaporator 172, a sealing plug 18 is slidably embedded between the anesthetic treatment drug tube 17 and the anesthetic evaporator 172, and the sealing plug 18 can move horizontally to push the atomized gas to the mask mechanism 3;

[0035] like Figure 4 The anesthetic evaporator 172 is fixedly connected to the inside of the anesthetic treatment tube 17, dividing the inside of the anesthetic treatment tube 17 into two sealed spaces, an upper space and a lower space. Pressure regulating valves are provided on the outside of the two sealed spaces. With the help of the pressure regulating valves, it can be ensured that the inside of the two sealed spaces is always maintained at a specific air pressure value. When the mixed liquid medicine enters the sealed space below, the anesthetic evaporator 172 at the top will start to operate and evaporate the liquid medicine in the closed space below. Then, through its own specific output port, the output port is connected to the upper space, and the generated anesthetic gas is transferred to the upper space.

[0036] The drug filling mechanism 2 is mounted on one side of the outer wall of the main body 1 and is used to deliver the drug liquid to the anesthetic treatment tube 17 of the main body 1, located inside the closed space below the anesthetic vaporizer 172, and atomize the drug liquid. The device is precisely driven to push the atomized gas.

[0037] The mask mechanism 3 is connected to the main body mechanism 1 and can detect the direction of gas flow through self-detection, determine whether the patient is inhaling or exhaling, and thus summarize and analyze the detection signals and output different instructions.

[0038] like Figure 1 、 Figure 2 and Figure 3 The interior of the cylindrical shell 11 is fixedly connected to the internal drive motor 12, and the interior of the cylindrical shell 11 is fixedly installed with an inner seat 13. A bearing 131 is provided inside the inner seat 13, and a threaded rod 132 is provided on the inner wall of the bearing 131. The inner surface of the inner seat 13 is fixed to the outer ring of the bearing 131, and the threaded rod 132 is fixed to the inner ring of the bearing 131, so that one end of the threaded rod 132 can be rotatably connected to the inner seat 13 through the bearing 131, and the end of the threaded rod 132 away from the bearing 131 is fixedly connected to the output end of the internal drive motor 12.

[0039] like Figure 1 、 Figure 2 and Figure 3 The outer surface of the threaded rod 132 is threadedly connected to a linkage plate 15, and a snap-fit ​​seat 151 is fixedly installed on the top of the linkage plate 15. The snap-fit ​​seat 151 is slidably connected to the columnar shell 11. The columnar shell 11 has a sliding groove for the movement of the snap-fit ​​seat 151, and the top of the snap-fit ​​seat 151 extends to the outside of the columnar shell 11. A locking assembly 16 is fixedly installed on the top of the columnar shell 11.

[0040] like Figure 3 The interior of the cylindrical shell 11 is fixedly connected to a limit rod 14, and the linkage plate 15 is slidably embedded in the limit rod 14. There is an arc groove at the bottom of the linkage plate 15, and the arc groove fits on the surface of the limit rod 14, so that the limit rod 14 can provide a guide for the linkage plate 15, so that the linkage plate 15 can only move horizontally in the direction of the limit rod 14.

[0041] like Figure 3 and Figure 4 An injection valve 173 is fixedly installed on one side of the outer wall of the anesthetic treatment tube 17, and an extension rod 181 is fixedly connected to one side of the outer wall of the sealing plug 18. The end of the extension rod 181 away from the sealing plug 18 is engaged with the engaging seat 151. The extension rod 181 and the engaging seat 151 are connected by a snap connection, so that when the engaging seat 151 moves, it can drive the extension rod 181 to move together.

[0042] like Figure 2 and Figure 5 The drug filling mechanism 2 includes a mounting plate 21, which is fixedly connected to the cylindrical shell 11. The inner surface of the mounting plate 21 is fixedly connected to a drug tube 211, and the outer surface of the drug tube 211 is fixedly mounted with multiple electric infusion pumps 22.

[0043] like Figure 2 、 Figure 5 and Figure 6 The input ends of the multiple electric infusion pumps 22 are all threadedly connected to the medicine bottles 221. The input port of the input end of the electric infusion pump 22 is provided with an internal thread, which can be threadedly connected to the medicine bottle 221. Each electric infusion pump 22 can be independently controlled and can adjust the input amount of the medicine liquid in each medicine bottle 221 according to the anesthesia needs of different patients. The input end of the drug tube 211 is fixedly installed with a diaphragm pump 23, and two circulation ports 231 are opened on the top of the diaphragm pump 23.

[0044] like Figure 2 and Figure 5 The output end of the drug tube 211 is fixedly connected to a hose A24, and a peristaltic pump 25 is fixedly installed at the output end of the hose A24. During the delivery of the drug solution, if the air pressure increases due to the delivery of the drug solution, the peristaltic pump 25 can automatically discharge an appropriate amount of gas to ensure that the air pressure is maintained within a normal range; if the air pressure decreases, gas can be replenished through the corresponding air inlet channel, thereby effectively balancing the pressure difference in the sealing device;

[0045] like Figure 4 and Figure 5 A hose B26 is fixedly installed at the output end of the peristaltic pump 25, and an injection valve 173 is fixedly installed on one side of the outer wall of the anesthetic treatment tube 17. The output end of the hose B26 is fixedly connected to the input end of the injection valve 173, so that the drug solution can be input into the interior of the anesthetic treatment tube 17 through the hose B26 and the injection valve 173.

[0046] like Figure 2 、 Figure 4 、 Figure 7 and Figure 8The mask mechanism 3 includes a mask body 31. Two thermal flow sensors 311 are provided on the inner surface of the mask body 31. The thermal flow sensors 311 are located at the front of the patient's mouth and nose. When the patient inhales, the gas flows toward the respiratory tract. During this process, the heat generated by the heating element is carried away, causing the temperature sensitive element to detect the corresponding temperature change. Based on the relationship between heat transfer and gas flow, combined with pre-calibration and a built-in algorithm model, the sensor can accurately determine that the gas is flowing toward the patient's body at this time, and can further calculate the inhalation flow rate. Similarly, when the patient exhales, the exhaled gas flows in the opposite direction, and its effect on the heat of the heating element is completely different from that during inhalation. Based on this, it can be determined that the patient is in an exhalation state, and the exhalation flow data can also be obtained. In this process, the detected signal is first amplified and filtered, and then needs to be converted into a digital signal. It is then further calculated and analyzed by a digital processing unit (such as a microcontroller). The microcontroller generates corresponding automatic control instructions based on the inhalation and exhalation state and flow results obtained by the analysis to control the internal drive motor 12.

[0047] An air valve 32 is fixedly installed at the input end of the mask body 31, and a hose C321 is fixedly installed at the input end of the air valve 32. A connector 171 is fixedly installed at the output end of the anesthetic treatment tube 17. The output end of the hose C321 and the output end of the connector 171 are fixedly installed, so that the atomized liquid in the anesthetic treatment tube 17 can be input into the mask body 31 through the connector 171 and the hose C321.

[0048] like Figure 2 、 Figure 7 and Figure 8 A multi-channel solenoid valve 33 is fixedly installed at the output end of the mask body 31 , and a filter plate 331 is fixedly installed at the output end of the multi-channel solenoid valve 33 .

[0049] Working principle: Multiple medicine bottles 221 containing different liquid medicine components are connected to the interior of the electric infusion pump 22 through threaded connections. Then, with the adsorption effect of the multiple electric infusion pumps 22, the liquid medicine can be sucked from the corresponding liquid medicine bottles in a controlled amount and delivered to the interior of the medicine tube 211. Subsequently, the peristaltic pump 25 starts working, using the hose A24, hose B26 and injection valve 173 as the delivery medium, and delivers the liquid medicine by peristalsis.

[0050] The liquid medicine in the drug tube 211 will be smoothly transferred to the interior of the anesthetic treatment tube 17. In addition, during this transfer process, the different liquid medicines can be fully mixed with each other, and the degree of mixing is also improved. The liquid medicine will be input into the space below the anesthetic vaporizer 172 in the anesthetic treatment tube 17 through the injection valve 173. When the mixed liquid medicine enters the sealed space below, the anesthetic vaporizer 172 located at the top will start to operate, evaporate the liquid medicine in the space below, and then transfer the generated anesthetic gas to the space above the anesthetic vaporizer 172 in the anesthetic treatment tube 17 through its own specific output port.

[0051] At the same time, the mask mechanism 3 is worn on the patient's face. When atomization anesthesia is performed, the thermal flow sensor 311 detects and determines whether the patient is in an exhalation or inhalation state, and finally generates a corresponding automatic control instruction. Relying on the automatic control system for operation, the internal drive motor 12 will start and stop continuously according to the corresponding instruction. When the internal drive motor 12 is in the power-on state, its output end starts to run and drives the threaded rod 132 to rotate inside the two bearings 131. When the threaded rod 132 rotates, it will generate a threaded transmission with the inside of the linkage plate 15, and the linkage plate 15 is limited at the limit position. The outer wall of the rod 14 drives the linkage plate 15 and the engaging seat 151 fixed to the top thereof to move laterally. Since the extension rod 181 is engaged with the inside of the engaging seat 151, when the linkage plate 15 moves, it pushes the extension rod 181 to move laterally as well. Then, the extension rod 181 is used as a medium to push the sealing plug 18 to move between the anesthetic agent processing tube 17 and the anesthetic agent vaporizer 172, thereby pushing the atomized anesthetic gas for processing, so that it is transferred to the inside of the mask body 31 through the hose C321 and then inhaled into the body of the patient.

[0052] On the contrary, when the patient is in the exhalation state, the internal drive motor 12 stops running, and the corresponding control command is transmitted to the inside of the air valve 32, so that the air valve 32 remains in the closed state, thereby disconnecting the communication between the mask body 31 and the hose C321 during the entire anesthetic gas delivery process;

[0053] When the patient inhales, the anesthetic gas enters the respiratory tract along the direction of natural inhalation airflow. The air pressure distribution of the breathing circuit is conducive to the forward flow of gas and is not easy to produce reverse pressure difference, thereby reducing the possibility of anesthetic reflux; and when the patient exhales, the anesthesia pathway is closed, which can effectively prevent the expiratory airflow from impacting the delivery pipeline in reverse, maintain the air pressure in the pipeline stable, and promote the orderly flow of gas according to the normal rule of inhalation entering and exhalation pausing delivery, thereby reducing the hidden dangers of anesthetic reflux caused by abnormal pressure difference.

[0054] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and modifications fall within the scope of the invention as claimed.

Claims

1. A medical anesthesia machine capable of preventing anesthetic backflow, comprising: The main body mechanism (1), the drug filling mechanism (2) and the mask mechanism (3) are characterized in that: the main body mechanism (1) includes a columnar shell (11) and a support frame (111); an anti-skid column (112) is fixedly installed on the top of the columnar shell (11); an anesthetic treatment drug tube (17) is installed on the anti-skid column (112); an anesthetic evaporator (172) is fixedly connected to the inside of the anesthetic treatment drug tube (17), and the inside of the anesthetic treatment drug tube (17) is divided into an upper and a lower sealed space; when the mixed drug liquid enters the lower sealed space, the anesthetic evaporator (172) located at the top will start to operate and evaporate the drug liquid in the lower sealed space; A sealing plug (18) is slidably embedded between the anesthetic agent processing tube (17) and the anesthetic agent vaporizer (172), and the sealing plug (18) can be horizontally moved to push the atomized gas to the mask mechanism (3); The drug filling mechanism (2) is mounted on one side of the outer wall of the main body mechanism (1) and is used to deliver the drug liquid to the anesthetic treatment drug tube (17) of the main body mechanism (1), located inside the sealed space below the anesthetic vaporizer (172); The mask mechanism (3) includes a mask body (31), two thermal flow sensors (311) are provided on the inner surface of the mask body (31), an air valve (32) is fixedly mounted on the input end of the mask body (31), a hose C (321) is fixedly mounted on the input end of the air valve (32), a connector (171) is fixedly mounted on the output end of the anesthetic treatment tube (17), and the output end of the hose C (321) is fixedly mounted on the output end of the connector (171); A multi-channel solenoid valve (33) is fixedly mounted on the output end of the mask body (31), and a filter plate (331) is fixedly mounted on the output end of the multi-channel solenoid valve (33); The mask mechanism (3) is connected to the main body mechanism (1) and is used to assist the patient's anesthesia and breathing.

2. A medical anesthesia machine capable of preventing anesthetic backflow according to claim 1, characterized in that: An internal drive motor (12) is fixedly connected to the interior of the columnar housing (11), an inner seat (13) is fixedly installed inside the columnar housing (11), a bearing (131) is provided inside the inner seat (13), a threaded rod (132) is provided on the inner wall of the bearing (131), and an end of the threaded rod (132) away from the bearing (131) is fixedly connected to the output end of the internal drive motor (12).

3. The medical anesthesia machine capable of preventing anesthetic backflow according to claim 2, characterized in that: The outer surface of the threaded rod (132) is threadedly connected to a linkage plate (15), a snap-fit ​​seat (151) is fixedly mounted on the top of the linkage plate (15), the snap-fit ​​seat (151) and the columnar housing (11) are slidably connected, and the top of the snap-fit ​​seat (151) extends to the outside of the columnar housing (11), and a locking assembly (16) is fixedly mounted on the top of the columnar housing (11).

4. The medical anesthesia machine capable of preventing anesthetic backflow according to claim 3, characterized in that: The interior of the columnar housing (11) is fixedly connected to a limiting rod (14), and the linkage plate (15) is slidably embedded in the limiting rod (14).

5. The medical anesthesia machine capable of preventing anesthetic backflow according to claim 3, characterized in that: An injection valve (173) is fixedly mounted on one side of the outer wall of the anesthetic treatment tube (17), and an extension rod (181) is fixedly connected to one side of the outer wall of the sealing plug (18), and one end of the extension rod (181) away from the sealing plug (18) is engaged with the engagement seat (151).

6. The medical anesthesia machine capable of preventing anesthetic backflow according to claim 1, characterized in that: The drug filling mechanism (2) comprises a mounting plate (21), the inner surface of the mounting plate (21) being fixedly connected to a drug tube (211), and the outer surface of the drug tube (211) being fixedly mounted with a plurality of electric infusion pumps (22).

7. The medical anesthesia machine capable of preventing anesthetic backflow according to claim 6, characterized in that: The input ends of the plurality of electric infusion pumps (22) are all threadedly connected to medicine bottles (221), and a diaphragm pump (23) is fixedly installed on the input end of the medicine tube (211). The top of the diaphragm pump (23) is provided with two circulation ports (231).

8. The medical anesthesia machine capable of preventing anesthetic backflow according to claim 7, characterized in that: The output end of the drug tube (211) is fixedly connected to a hose A (24), the output end of the hose A (24) is fixedly installed with a peristaltic pump (25), the output end of the peristaltic pump (25) is fixedly installed with a hose B (26), an injection valve (173) is fixedly installed on one side of the outer wall of the anesthetic treatment drug tube (17), and the output end of the hose B (26) is fixedly connected to the input end of the injection valve (173).

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