CN211157843U - Electronic analgesia medicine infusion device - Google Patents
Electronic analgesia medicine infusion device Download PDFInfo
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- CN211157843U CN211157843U CN201920867564.3U CN201920867564U CN211157843U CN 211157843 U CN211157843 U CN 211157843U CN 201920867564 U CN201920867564 U CN 201920867564U CN 211157843 U CN211157843 U CN 211157843U
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Abstract
The utility model discloses an electronic analgesia infusion device, the device including be used for from relieving pain the medicine box and inhale the infusion set of human body, control infusion set suction medicine or injection liquid medicine after the medicine, the infusion set is piston injector, including the piston in arranging in this cylinder body in business turn over liquid mouth, injection cylinder body and inner, the outer end of piston with electrically controlled device connects, electrically controlled device including: an electric push-pull injection, a motor transmission mechanism for sucking liquid medicine and an electronic controller for controlling the electric push-pull injection and the liquid medicine suction. The utility model realizes the accurate control of pushing out the liquid medicine into the body of a patient after the pain relieving medicine in the medicine box is sucked into the injector.
Description
Technical Field
The utility model relates to the technical field of medical appliances, in particular to an electronic analgesia drug delivery device.
Background
Patient Controlled Analgesia (PCA) is currently an important mode of individualized analgesia, and electronic analgesia pumps are the main tools for realizing individualized analgesia. At present, the domestic electronic analgesic pump of entacapone and the human first electronic analgesic pump occupy most markets. When medical personnel used the electronic pump, at first by doctor or nurse configuration analgesia medicine income medicine module, because the current is single medicine box, some medicines can not use mixedly because of there being the incompatibility, this is one of the limitation of using analgesia pump at present. Then, the electronic drive device (control panel) is set with the first dose (setting the single dose given for the first time), the background dose (1 hour continuous infusion dose), the PCA dose (dose given by one press), the lock-in time (for safety, the interval between 2 PCA presses needs to be controlled), and the limit amount (first dose + background dose + PCA dose within 1 hour). When the patient uses the electronic pump, when the patient feels pain, the PCA button can be pressed to enable the PCA dosage preset by an anesthesiologist to be infused into the body relatively quickly, and the pain easing of the patient is realized through self-controlled drug administration. However, considering the adverse effects and side effects of opioid analgesics, it is not desirable to set the dose too large, and the number of administrations is not too large due to time limitations and safety dose limitations, which are not true on-demand analgesia.
In the electronic pump operation, all adopt mechanical extrusion formula at present, the medicine is extruded to the operation pipeline entering patient according to the parameter of setting for in a certain time, and this has 3 drawbacks: 1. when the medicine template is separated from the electronic driving module, if the machine does not give an alarm or is not discovered and processed by medical care personnel in time, the medicine in the medicine box can be quickly injected into the body of a patient without limit, and great potential safety hazards exist. 2. The dosing accuracy is difficult to control, i.e. the set dose to be dosed is directly in uncontrollable error from the actual running dose. 3. When the venous pressure of the end connected with the patient is larger than the pressure of the pipeline, blood backflow occurs to pollute the medicine box, and resource waste is caused.
In view of the above, in order to achieve the purpose of safe and accurate administration and achieve true pain relief on demand, it is necessary to develop a novel electronic pain relief pump.
SUMMERY OF THE UTILITY MODEL
The utility model provides an electronic analgesia medicine delivery device, which realizes the accurate control of the injection analgesic medicine suction injector and the release dosage.
The utility model adopts the following technical scheme:
an electronic analgesia and medicine infusion device comprises an infusion apparatus for sucking medicine from an analgesic medicine box and then injecting the medicine into a human body, and an electric control device for controlling the infusion apparatus to suck the medicine or inject liquid medicine.
Advantageous effects
The utility model discloses an electronic controller accurate control motor drive, linkage piston are to the outer pull of syringe cylinder body, and because the effect of vacuum negative pressure in the syringe cylinder body, the analgesic medicament is gone into in the business turn over liquid mouth follow analgesia medicine box through the syringe to suction, and electronic controller control motor drive linkage piston pushes to the syringe cylinder body is inside, and the analgesic medicament in with the cylinder body passes through syringe business turn over liquid mouth and injects in the human body. Because the electronic controller controls the precise motor transmission mechanism, the quantity of the liquid medicine sucked into and pushed out of the injection syringe is precisely controlled. The electronic controller can preset the medicine pushing quantity and automatically control the medicine liquid dosage injected into the human body according to the medicine pushing quantity, thereby ensuring the personal safety. In addition, the utility model discloses a three-way solenoid valve, or tee bend reposition of redundant personnel and two kinds of connected modes of two-way electric control valves connect medicine box, syringe and syringe needle, close the liquid outlet of medicine box when pushing away the medicine to prevent that blood from flowing back and polluting the medicine box.
Drawings
Fig. 1 is a schematic structural view of an electronic analgesic drug delivery device provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of an electronic analgesic drug delivery device provided in embodiment 2 of the present invention.
Fig. 3 is a second schematic structural view of an electronic analgesic drug delivery device provided in embodiment 2 of the present invention;
fig. 4 is a schematic structural diagram of an electronic analgesic drug delivery device provided in embodiment 3 of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Referring to fig. 1, it is a schematic structural diagram of an electronic analgesic drug delivery device provided in embodiment 1 of the present invention. The device comprises an infusion set for sucking the medicine from the pain relieving box and then injecting the medicine into a human body, an electric control device for controlling the infusion set to suck the medicine or inject the liquid medicine, a connecting pipe and a needle head. The infusion apparatus is a piston type injector 100, comprising a liquid inlet and outlet 101, an injection cylinder 102 and a piston 103 with the inner end arranged in the cylinder, the outer end of the piston 103 is connected with the electric control device, the electric control device comprises an electric push-pull type injection or liquid medicine suction motor transmission mechanism 200 and an electronic controller 300 for controlling the electric push-pull type injection or liquid medicine suction motor transmission mechanism. The connecting tube connects the inlet and outlet 101 and the needle 400.
In this embodiment, the electronic controller 300 precisely controls the motor transmission mechanism 200, the linkage piston 103 pulls and pulls out of the syringe cylinder 102, the analgesic is sucked into the syringe cylinder 102 through the liquid inlet and outlet 101 of the syringe due to the action of vacuum negative pressure, the electronic controller 300 controls the motor transmission mechanism 200 to push the linkage piston 103 into the syringe cylinder 102, and the analgesic in the syringe cylinder is injected into the human body through the syringe liquid inlet and outlet 101, the connecting tube and the needle 400. Because electronic controller 300 accurately controls motor drive 200, the amount of analgesic drug drawn into and expelled from the syringe is accurately controlled.
Fig. 2 is a schematic structural diagram of an electronic analgesic drug delivery device according to embodiment 2 of the present invention. This example 2 is based on example 1, with the following differences:
the electronic analgesia infusion device is provided with two groups of infusion sets and the electric control device and is controlled by the same electronic controller 300. The electronic controller 300 is a program controller with an embedded computer, which is a single-chip microcomputer MCU in this embodiment, as a core. The two groups of syringes 100', 100 ″ are respectively connected with the medicine box E, G, and three modes of the two medicine boxes E, G for containing medicines are as follows: one medicine box contains opium medicine and the other medicine box contains non-opium medicine, and the two medicine belts have incompatibility; one of the kits contains a mixture of opioids and non-opioids; one of the kits contains only opioids.
In this embodiment, the motor transmission mechanism includes a motor, and the motor is one of a dc brushless motor, a dc brush motor, a stepping motor, or a servo motor. The output shaft of the motor A, K is connected with a screw rod 201 ', 201 ", the screw rod 201 ', 201" is sleeved with a transmission block 202 ', 202 "with an inner screw, the transmission block 202 ', 202" is externally provided with a guide device 203 ', 203 "arranged along the axial direction of the screw rod 201 ', 201", the transmission block 202 ', 202 "is fixedly connected with the outer end of the piston 103 ', 103", so that the transmission block 202 ', 202 "can move forward and backward in the axial direction of the screw rod, thereby driving the piston 103 ', 103" to push inwards in the cylinder body 102 ', 102 "to extrude liquid medicine through the liquid inlet and outlet 101 ', 101", or pull outwards to suck liquid medicine through the liquid inlet and outlet 101 ', 101 ". The transmission blocks 202', 202 ″ are externally provided with limit switches K1, K2 along the axis direction of the screw rod, and the limit switches can be: the Hall sensor, the switch, the optical coupler or the groove-shaped optical coupler, and the limit switches K1 and K2 are connected with an input interface of the MCU and used for controlling the push-pull stroke of the piston.
When the motor is a brushless DC motor or a brush DC motor, the stepping motor is provided with or fixed with a K50 'K50' module which can synchronously rotate along with the motor output shaft on the motor output shaft, the module can be respectively driven by rotating for one circle, a groove-shaped optical coupling sensor K5 'K5' arranged beside the motor output shaft is triggered once or for multiple times, and pulses are respectively output by the groove-shaped optical coupling sensor K5 'K5' through the rotation of the module K50 'K50' to be counted as the rotation of the motor output shaftThe number of turns of (1), in the case of a single side, is fixed, and the amount of medicine pushed out or sucked in by the driving block 201' is driven by the motor output shaft per one turn V1. When in use, the setting amount V of the medicine pushing dosage is preset by the electronic controller 300, and the setting amount V can be freely set by pressing a button. Secondly, the electronic controller 300 obtains the dosage Z of the full-capacity liquid medicine in the medicine boxGeneral assemblyA dose V1 of the medicine pushing or sucking of the piston by one rotation of the output shaft of the motor and the number Q of the rotation of the output shaft of the currently pushed medicine motori push awayThat is, each time the output shaft of the motor rotates one turn, it is fed back to the electronic controller 300 how many turns the output shaft of the motor actually rotates, i.e., Qi push awayIs a variable, the electronic controller 300 calculates the total dosage Z of the medical fluid currently pushed out of the injection cylinder 102 ″i push away＝V1*Qi push awayFurther calculate the residual quantity Z of the medicine liquid in the current medicine boxi remains of＝ZGeneral assembly-Zi push away. The electronic controller 300 continuously detects the residual Z of the medicine box liquid medicinei remains ofIf the dosage is more than or equal to the set quantity V of the medicine pushing dosage, if so, the electronic controller 300 drives and controls the motor output shaft to rotate forwards or backwards to execute the medicine pushing step, and otherwise, the medicine drawing step is executed.
One of the ways of connecting the liquid inlet and outlet of the injector with the medicine box and the injection needle respectively is as follows:
the liquid inlet and outlet ports 101 ', 101' of the injector are connected with the liquid inlet and outlet main ports 501 ', 501' of a three-way electric control valve 500 ', 500', two controlled branch ports of the three-way electric control valve are respectively a liquid inlet branch port 502 ', 502' and a liquid discharge branch port 503 ', 503', the liquid inlet branch ports 502 ', 502' are connected with the medicine box E through connecting pipes, and the liquid discharge branch ports 503 ', 503' are connected with the injection needle 400 through connecting pipes. The three-way electric control valves 500 'and 500' are three-way electromagnetic valves or motor control valves. The motor B is connected with the three-way electromagnetic valve buckle and used for controlling the rotation of the three-way electromagnetic valve buckle, and the control end of the motor B is connected with the output end of the MCU. Be provided with limit switch K3, K4 on the tee bend automatically controlled valve, this limit switch is the hall sensor class, switching branch or cell type opto-coupler class, limit switch K3, K4 with singlechip MCU's input interface links to each other for control solenoid valve buckle switch rotary stroke is in order to realize tee bend solenoid valve business turn over liquid main entrance and exit select with the feed liquor branch mouth intercommunication or with flowing back branch mouth intercommunication.
During actual work, the MCU single chip microcomputer can output PWM signals to control the rotating speed of the motor A, K or directly control the rotation of the motor, the IO port of the MCU outputs high and low levels to control the forward and reverse rotation and start and stop of the motor, the rotation of the motor A, K drives the screw threads on the screw rods 201 'and 201' to rotate, the transmission blocks 202 'and 202' are driven to move in parallel on the guide devices 203 'and 203' to drive the pistons 103 'and 103' of the injector to move forward and reverse in the axial direction of the screw rods so as to pull out or push in the injector cylinders 102 'and 102' so that the injector can pump and push medicine, the transmission blocks 202 'and 202' are provided with limit switches M, N to ensure that the pistons of the injector work in a normal movement range (namely between the Hall sensors K1 and K2).
The high and low level of the I0 port of the MCU controls the positive and negative rotation and stop circuit of the motors B and J, the rotation of the motor B, J drives the rotation of the gear, the gear rotates and drives the rotation of the buckle of the three-way valve, the rotation of the buckle changes the three-way valve, the buckle is fixedly connected with the three-way valve, and the buckle is provided with limit switches C and L to ensure that the three-way valve is in a normal working rotation range (namely between the Hall sensors K3 and K4).
When medicine is drawn, the single chip microcomputer MCU receives a medicine drawing signal and outputs a control signal to control the motor B, J to rotate forwards, the motor B, J drives the rotary buckle to reach a state that the liquid inlet and outlet main ports 501 'and 501' of the three-way electric control valve are communicated with the liquid inlet branch ports 502 'and 502', limit switches C and L on the buckles 504 'and 504' trigger the Hall sensor K3, when the MCU receives a trigger signal of the Hall sensor K3, the motor B, J stops rotating, the motor A, K starts rotating forwards, the injector draws medicine when the motor A, K rotates forwards, the limit switches M, N on the transmission blocks 202 'and 202' which move in parallel when the medicine is drawn fully trigger the Hall sensor K2, when the single chip microcomputer MCU receives a trigger signal of the Hall sensor K2, the motor A, K stops rotating, then the motor B, J starts rotating backwards again, the liquid inlet and outlet main ports 501 'and 501' of the electric control three-way valve are communicated with the liquid outlet branch ports 503 'and 503', when the medicine is drawn fully, when the communication state is reached, the three-way electromagnetic valve buckle has the limit switches C and L trigger the Hall sensor K4, and the.
When pushing medicine, the single chip microcomputer MCU receives a signal of a medicine pushing key, outputs a control signal to control the motor A, K to rotate reversely, when the motor A, K rotates reversely, the injector pushes medicine, the speed and time of pushing medicine are strictly operated from set parameters, when the injector pushes the medicine completely, the upper limit switch M, N of the transmission blocks 202 ' and 202 ' triggers the Hall sensor K1, the single chip microcomputer MCU receives a trigger signal of the Hall sensor K1 and outputs a control signal to stop the motor A, K from rotating, at this time, the motor B, J is started to rotate positively, the motor B, J drives the rotary three-way valve buckle to reach the state that the inlet and outlet main ports 501 ' and 501 ' of the three-way electromagnetic valve are communicated with the inlet branch ports 502 ' and 502 ', the limiting switches C and L on the three-way valve buckle 504 ' can trigger the Hall sensor K3, when the single chip microcomputer MCU receives a trigger signal of the Hall sensor K3, outputs a control signal to stop.
Fig. 3 is a second schematic structural view of an electronic analgesic drug delivery device according to embodiment 2 of the present invention.
The second mode that the liquid inlet and outlet of the injector are respectively connected with the medicine box and the injection needle head is as follows:
the liquid inlet and outlet 101 ', 101' of the injector are connected with one end of two-way electric control valves D1, D2 or H1, H2 through a three-way shunt, the other end of the two-way electric control valves D1, D2 or H1, H2 are respectively a liquid inlet branch port 602 ', 602' and a liquid discharge branch port 603 ', 603', the liquid inlet branch port is connected with the medicine box through a connecting pipe, and the liquid discharge branch port is connected with the injection needle through a connecting pipe. The MCU signal of the singlechip controls the on-off of the two-way electric control valves D1 and D2 or H1 and H2, and is used for realizing the selection of the three-way flow dividing inlet and outlet main ports 601 'and 601' to be communicated with the liquid inlet branch ports 602 'and 602' or the liquid discharge branch ports.
During actual work, the MCU single chip microcomputer outputs a PWM signal to control the rotating speed of the motor A, K, the IO port of the MCU outputs high and low levels to control the forward and reverse rotation and start and stop of the motor, the rotation of the motor A, K drives the screw threads on the screw rods 201 'and 201 ", the transmission blocks 202' and 202" are driven to move in parallel on the guide devices 203 'and 203 "to drive the pistons 103' and 103" of the injector to move forward and reverse in the axial direction of the screw rods, so that the pistons are pulled out of or pushed into the injector cylinders 102 'and 102 ", the injector can draw and push medicines, the transmission blocks 202' and 202" are provided with limit switches M, N, and the pistons of the injector are ensured to work in a normal movement range (namely between the Hall sensors K1 and K2). The high and low level of the I0 port of the MCU controls the on-off of two-way electric control valves D1 and D2 or H1 and H2.
When medicine is pumped, the single chip microcomputer MCU receives a signal of a medicine pumping key, outputs a control signal to control the two-way electric control valve D1 and the H1 to be closed, the two-way electric control valve D2 and the H2 to be opened, when the state that the inlet and outlet main port and the inlet branch port 602 'and 602' of the three-way shunt are communicated is reached, at the moment, the motor A, K is started to rotate forwards, the injector pumps medicine when the motor A, K rotates forwards, the limit switch M, N on the transmission blocks 202 'and 202' which move in parallel when the medicine is pumped fully triggers the Hall sensor K2, the single chip microcomputer MCU receives a trigger signal of the Hall sensor K2 to stop the motor A, K to rotate, at the moment, the single chip microcomputer MCU outputs a control signal to control the two-way electric control valve D1 and the H1 to be opened, the two-way electric control valve D2 and the H2 to be closed, so that the inlet and.
When pushing medicine, the single chip microcomputer MCU receives a signal of a medicine pushing button, outputs a control signal to control the motor A, K to rotate reversely, when the motor A, K rotates reversely, the injector pushes medicine, the speed and time of pushing medicine are strictly operated from set parameters, when the injector pushes medicine, the limiting switches M, N on the transmission blocks 202 ', 202' trigger the Hall sensor K1, the single chip microcomputer MCU receives a trigger signal of the Hall sensor K1 and outputs a control signal to stop the motor A, K to rotate, at the moment, the single chip microcomputer MCU outputs a control signal to control the closing of the two-way control valves D1 and H1, the two-way control valves D2 and H2 are opened, the three-way split inlet and outlet liquid main ports 601 ', 601' are communicated with the liquid inlet branch ports 602 ', 602', and medicine pushing is completed.
Fig. 4 is a schematic structural view of an electronic analgesic drug delivery device provided in embodiment 3 of the present invention. This example 3 is based on example 2, with the difference in the implementation of the motor drive.
The motor transmission mechanism comprises a motor, and the motor is one of a direct current brushless motor, a stepping motor or a servo motor. The output shaft of the motor A, K is connected with a cam link mechanism, the cam link mechanism comprises a disc 701 'and 701 ", the circle center of the back of the disc is fixedly connected with the output shaft of the motor A, K, the front of the disc is provided with a shaft body 702' and 702" deviating from the circle center, and the shaft body 702 'and 702 "is rotatably hinged with one end of a connecting rod 703' and 703"; the side surfaces of the transmission blocks 202 'and 202 "are provided with shaft bodies 704' and 704", one ends of connecting rods 705 'and 705 "are connected on the shaft bodies 704' and 704", and the other ends of the connecting rods 705 'and 705 "are rotatably hinged with the other ends of the connecting rods 703' and 703" as power output ends.
In operation, when the shaft 702 ', 702 "is rotated on the disc 701 ', 701" to the farthest distance from the injector, the linkage 703 ', 703 ", 705 ', 705" slides along the linear motion guide 203 ', 203 ", so that the piston 103 ', 103" is pulled out of the injector cylinder 102 ', 102 ", completing the drug withdrawal. When the shaft 702 ', 702 "is rotated on the disc 701', 701" to the nearest distance from the syringe, the linkage blocks 202 ', 202 "of the links 703', 703", 705 ', 705 "slide on the linear motion guides 203', 203", so that the pistons 103 ', 103 "are pushed into the syringe cylinders 102', 102", completing the drug delivery.
The motor transmission mechanism in this embodiment may replace one or both of the two sets of motor transmission mechanisms in embodiment 2.
The foregoing is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
Claims (25)
1. An electronic analgesia and medicine infusion device comprises an infusion apparatus for sucking medicine from an analgesic medicine box and then injecting the medicine into a human body, and an electric control device for controlling the infusion apparatus to suck the medicine or inject liquid medicine.
2. The electronic analgesic drug delivery device of claim 1 wherein the motor drive mechanism comprises an electric motor, the electric motor being one of a dc brushless motor, a stepper motor, or a servo motor; the output shaft of the motor is connected with a screw rod, a transmission block with an inner screw is sleeved on the screw rod, a guide device arranged along the axial direction of the screw rod is arranged outside the transmission block, and the transmission block is fixedly connected with the outer end of the piston, so that the transmission block can move forward and backward in the axial direction of the screw rod, and the piston is driven to push, extrude or pull and absorb liquid medicine through a liquid inlet and a liquid outlet in the cylinder body in the inward and outward directions.
3. The electronic analgesic drug delivery device of claim 2, wherein a limit sensor is disposed outside the transmission block along the axis of the screw rod, and the limit sensor is connected to the input interface of the electronic controller for controlling the stroke of pushing and pulling the piston.
4. The electronic analgesic drug delivery device of claim 1 wherein the motor drive mechanism comprises an electric motor, the electric motor being one of a dc brushless motor, a stepper motor, or a servo motor; the output shaft of the motor is connected with a cam link mechanism, the power output end of a link rod of the cam link mechanism is connected with a slide block, and the slide block slides forwards and backwards on a linear motion guide device and is fixedly connected with the outer end of the piston, so that the piston is driven to push, extrude or pull and suck liquid medicine in the cylinder body along the positive and negative directions through the liquid inlet and outlet.
5. The electronic analgesic delivery device of claim 4, wherein a limit sensor is disposed outside the slider along the guiding direction, and the limit sensor is connected to the input interface of the electronic controller for controlling the stroke of pushing and pulling the piston.
6. The electronic analgesic delivery device of any one of claims 1 to 5 wherein there are two sets of the injector and the electronic control device.
7. The electronic analgesic delivery device of claim 6 wherein both sets of the injector and the electronic control unit are controlled by the same electronic controller.
8. The electronic analgesic delivery device of claim 6, wherein the two sets of inlet and outlet ports are connected to respective inlet and outlet manifolds of a three-way electrically controlled valve, and the two controlled branch ports of the three-way electrically controlled valve are inlet branch ports and outlet branch ports thereof.
9. The electronic analgesic delivery device of claim 7, wherein the two sets of inlet and outlet ports are connected to respective inlet and outlet manifolds of a three-way electrically controlled valve, and the two controlled ports of the three-way electrically controlled valve are inlet branch ports and outlet branch ports.
10. The electronic analgesic delivery device of claim 6, wherein the two sets of inlet and outlet ports are connected to one end of two-way electrically controlled valves through a three-way branch, and the other end of the two-way electrically controlled valves is a liquid inlet branch port and a liquid outlet branch port.
11. The electronic analgesic delivery device of claim 7, wherein the two sets of inlet and outlet ports are connected to one end of two-way electrically controlled valves through a three-way branch, and the other end of the two-way electrically controlled valves is a liquid inlet branch and a liquid outlet branch.
12. The electronic analgesic delivery device of claim 8, wherein the two sets of inlet ports are connected to the drug cassette A and the drug cassette B respectively through connecting pipes.
13. The electronic analgesic delivery device of claim 12, wherein the drain branch is connected to the injection needle via a connecting tube.
14. The electronic analgesic delivery device of claim 9, wherein the two sets of inlet ports are connected to the drug cassette a and the drug cassette B through connecting pipes.
15. The electronic analgesic delivery device of claim 14, wherein the drain branch is connected to the injection needle via a connecting tube.
16. The electronic analgesic delivery device of claim 10, wherein the two sets of inlet ports are connected to the drug cassette a and the drug cassette B through connecting pipes.
17. The electronic analgesic delivery device of claim 16, wherein the drain branch is connected to the injection needle via a connecting tube.
18. The electronic analgesic delivery device of claim 11, wherein the two sets of inlet ports are connected to the drug cassette a and the drug cassette B through connecting pipes.
19. The electronic analgesic delivery device of claim 18, wherein the drain branch is connected to the injection needle via a connecting tube.
20. The electronic analgesic delivery device of claim 8, wherein the three-way electrically controlled valve is a three-way solenoid valve or a motor controlled valve.
21. The electronic analgesic delivery device of claim 9 wherein the two sets of three-way electrically controlled valves are three-way solenoid valves or motor controlled valves.
22. The electronic analgesic delivery device of claim 10, wherein the two-way electrically controlled valve is a two-way solenoid valve or a motor controlled valve.
23. The electronic analgesic delivery device of claim 11, wherein the two-way electrically controlled valve is a two-way solenoid valve or a motor controlled valve.
24. The electronic analgesic delivery device of any one of claims 1 to 5 wherein the electronic controller is a programmed controller with an embedded computer as a core.
25. The electronic analgesic delivery device of claim 24, wherein the electronic controller comprises an embedded computer.
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| CN201920867564.3U CN211157843U (en) | 2019-06-10 | 2019-06-10 | Electronic analgesia medicine infusion device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920867564.3U CN211157843U (en) | 2019-06-10 | 2019-06-10 | Electronic analgesia medicine infusion device |
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| CN211157843U true CN211157843U (en) | 2020-08-04 |
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