Electric medicine extractor

Abstract

The invention discloses an electric medicine pumping device, and relates to the technical field of medical instruments, the electric medicine pumping device comprises a box body, a pressing connection mechanism and a medicine pumping pump, the pressing connection mechanism is arranged in the box body, the pressing connection mechanism comprises an annular lifting part, a lifting platform and a needle head group, and at least one needle head of the needle head group is communicated with the medicine pumping pump through the lifting platform; the lifting platform is sleeved with the annular lifting part, a rubber mat is arranged at the top of the annular lifting part, the box is provided with an opening allowing a medicine outlet of a medicine container to abut against the top of the annular lifting part, a pulley is arranged between the annular lifting part and the lifting platform, a rope is connected between the annular lifting part and the lifting platform, and the rope is wound on the pulley. The annular lifting piece is connected with a first reset spring, a limiting piece used for preventing the lifting table from excessively rising is arranged in the box body, and the pesticide pump is electrically connected with the control system. The medicine pumping precision and the medicine pumping efficiency are improved through the medicine pumping pump, after medicine pumping is completed, the needle automatically retracts into the rubber mat, and the risk that the needle is polluted is reduced.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an electric drug aspirator. Background Technology

[0002] Intravenous infusion is a commonly used treatment method in the medical field. It involves delivering the liquid medicine in the medicine container to the human body through an infusion set. The medicine container is generally divided into a medicine bottle or a medicine bag. During use, the medicine container is hung at a high place for infusion.

[0003] However, before intravenous infusion, the volume of medication in the container needs to be controlled to avoid exceeding the required infusion volume, which could easily lead to overdose. For example, to administer 125ml of mannitol, 125ml needs to be drawn from a standard 250ml mannitol container before intravenous infusion. The applicant knows that the medication is drawn from the container using a syringe. However, the commonly used syringe capacity is usually smaller than the required volume, which requires repeated drawing. During repeated drawing, the syringe comes into contact with the external environment as it discharges the medication and moves back and forth between the outlet of the container and the container receiving the discharged solution. This makes it susceptible to contamination, increasing the risk of contamination of the remaining medication in the container. Moreover, manual repeated drawing has the problems of low dosage accuracy and low extraction efficiency.

[0004] Therefore, there is an urgent need for an electric pesticide extractor with high extraction accuracy, high extraction efficiency, and low pollution risk. Summary of the Invention

[0005] The purpose of this invention is to provide an electric drug extractor to solve the problems existing in the prior art. By utilizing the pulley-assisted lifting relationship between the annular lifting component and the lifting platform, the needle automatically enters the drug container when it is inserted and retracts into the rubber pad when the drug container is pulled out. Combined with the drug extraction function of the drug pump, the drug extraction accuracy and efficiency are improved while reducing the risk of contamination.

[0006] To achieve the above objectives, the present invention provides the following solution: The present invention provides an electric medicine drawer, including a housing, a pressing and connecting mechanism, and a medicine drawer pump. The pressing and connecting mechanism is disposed in the housing and includes an annular lifting member, a lifting platform, and a needle assembly. The needles of the needle assembly are inserted into the lifting platform. At least one needle of the needle assembly is connected to the medicine drawer pump through the lifting platform. When the medicine container is a medicine bottle, at least one needle of the needle assembly serves as an exhaust needle. The exhaust needle is connected to a venting pipe through the lifting platform. The annular lifting member... The annular lifting component, fitted around the outer periphery of the lifting platform, has a rubber pad at its top for the needle to pierce through. The housing has a dispensing port for the medicine container to abut against the opening at the top of the annular lifting component. At least two pulleys of constant horizontal height are connected between the annular lifting component and the lifting platform. A rope connects the annular lifting component and the lifting platform, and the rope is wound around the pulleys. The annular lifting component is connected to a first return spring for resetting its position. A limiting component is provided inside the housing to prevent the lifting platform from rising excessively. The medicine pump is electrically connected to the control system.

[0007] Preferably, the rubber pad is detachably mounted on the top of the annular lifting member, and the lifting platform is provided with an electric telescopic rod and an electric clamping mechanism. The electric clamping mechanism is mounted on the telescopic rod of the electric telescopic rod, the electric telescopic rod is vertically arranged, and the needle is located on the clamping path of the electric clamping mechanism.

[0008] Preferably, the housing is provided with an annular guide member, which is connected to the inner wall of the housing. The outer diameter of the annular guide member is not less than the diameter of the opening. The annular guide member is coaxially arranged with the opening. The inner diameter of the annular guide member matches the outer diameter of the annular lifting member. A groove is formed on the annular guide member. An outwardly extending blocking member is provided at the top of the annular lifting member. The blocking member extends into the groove. The first reset spring is disposed in the groove.

[0009] Preferably, the housing is provided with a second reset spring for resetting the lifting platform.

[0010] Preferably, an electromagnet is provided inside the box, and an iron block is provided on the outer peripheral wall of the annular lifting component, with the electromagnet positioned on one side of the descending path of the iron block.

[0011] Preferably, the bottom of the lifting platform is provided with a guide rod, and the housing is provided with a guide cylinder, with the guide rod slidably disposed vertically within the guide cylinder.

[0012] Preferably, the box body is provided with a waste liquid tank, and the outlet of the drug pump is connected to the waste liquid tank.

[0013] Preferably, the waste liquid tank is equipped with a liquid level monitoring mechanism, and both the liquid level monitoring mechanism and the alarm mechanism are electrically connected to the control system. The alarm mechanism is installed on the tank body.

[0014] Preferably, the waste liquid tank is a pull-out waste liquid tank.

[0015] Preferably, the top of the box is provided with a straightening mechanism for straightening the medicine container.

[0016] The present invention achieves the following main technical effects compared to the prior art: When the outlet of the medicine container is inserted downwards into the opening and pushes the annular lifting component downwards, the lifting platform moves upwards due to the presence of ropes and pulleys. The needle on the lifting platform pierces the rubber pad and enters the medicine container, completing the connection between the pump and the medicine container. At this time, the pump can be turned on to extract a measured amount of medicine from the medicine container. Compared with the manual method of using a syringe to draw medicine, this greatly improves the accuracy and efficiency of medicine extraction. Moreover, after the medicine is extracted, during the process of pulling out the medicine container, the annular lifting component rises and resets under the elastic force of the first return spring, and the lifting platform descends. The needle automatically retracts into the rubber pad. Due to the puncture point of the rubber pad, it closes, preventing the needle from being exposed to the external environment for a long time, thereby reducing the risk of needle contamination and thus preventing the risk of contamination of the medicine in the medicine container in the next operation.

[0017] Other solutions of the present invention achieve the following technical effects compared with the prior art: The electric clamping mechanism can automatically clamp the needle and pull it out of the lifting platform under the drive of the electric telescopic rod. By removing the rubber pad, the needle can be conveyed out of the opening and replaced with a new needle by working with the electric telescopic rod, which improves the convenience of changing needles.

[0018] Waste liquid tanks can be used to store extracted waste liquid, avoiding direct discharge and pollution of the surrounding environment. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the structure of an electric medicine dispenser using a pressing and connecting mechanism for a medicine bag in an embodiment of the present invention; Figure 2This is an enlarged view of the pressing and connecting mechanism for the medicine-holding bag in an embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of an electric medicine dispenser using a press-to-connect mechanism for a medicine bottle in an embodiment of the present invention; The components include: 1. Box body; 2. Press-to-connect mechanism; 3. Drug pump; 4. Annular lifting component; 5. Lifting platform; 6. Needle; 7. Rubber pad; 8. Pulley; 9. First return spring; 10. Rope; 11. Electric telescopic rod; 12. Electric clamping mechanism; 13. Annular guide component; 14. Second return spring; 15. Electromagnet; 16. Iron block; 17. Guide rod; 18. Guide cylinder; 19. Waste liquid tank; 20. Telescopic cylinder; 21. Straightening block; 22. Partition; 23. Exhaust needle. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] The purpose of this invention is to provide an electric drug extractor to solve the problems existing in the prior art. By utilizing the pulley-assisted lifting relationship between the annular lifting component and the lifting platform, the needle automatically enters the drug container when it is inserted and retracts into the rubber pad when the drug container is pulled out. Combined with the drug extraction function of the drug pump, the drug extraction accuracy and efficiency are improved while reducing the risk of contamination.

[0023] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Please refer to the following: Figures 1-3As shown, an electric medicine aspirator is provided, including a housing 1, a pressing and connecting mechanism 2, and a medicine aspirating pump 3. The medicine aspirating pump 3 can be a peristaltic pump or a diaphragm pump, etc. The pressing and connecting mechanism 2 is disposed inside the housing 1 and includes an annular lifting member 4, a lifting platform 5, and a needle assembly. The needles 6 of the needle assembly are inserted and disposed on the lifting platform 5, and the needles 6 are connected to the medicine aspirating pump 3 through the lifting platform 5. The composition of the needle assembly varies depending on the medicine container. Taking a medicine bag as an example, the number of needles 6 in the needle assembly is up to At least one needle 6 is required, and all needles 6 are connected to the drug pump 3 via the lifting platform 5. When facing the medicine bottle, the needle group must contain at least two needles 6, with at least one needle 6 connected to the drug pump 3 via the lifting platform 5. At least one needle 6 serves as an exhaust needle 23, which is connected to the external ambient air via the lifting platform 5 and the ventilation pipe. The connection between the needle 6 and the lifting platform 5 is as follows: the lifting platform 5 is equipped with a matching insertion post for the needle 6. The insertion post is hollow, and its inner cavity is connected to the needle. While the head 6 is connected, the inner cavity of the insertion post is connected to the inlet of the drug pump 3 through a hose, or the inner cavity of the insertion post is connected to the external ambient air through a venting pipe. The venting pipe is a hose. The annular lifting component 4 is sleeved on the outer periphery of the lifting platform 5. The top of the annular lifting component 4 is provided with a rubber pad 7 for the needle 6 to pierce. The box body 1 is provided with an outlet for the drug container to abut against the opening at the top of the annular lifting component 4. At least two pulleys 8 with a constant horizontal height are provided between the annular lifting component 4 and the lifting platform 5. The pulleys 8 can be supported in the box body 1 by a support rod. A rope 10 is connected between the annular lifting component 4 and the lifting platform 5. The rope 10 is wound around the pulleys 8. The annular lifting component 4 is connected with a first return spring 9 for resetting it. The box body 1 is provided with a limiter to prevent the lifting platform 5 from rising excessively, so as to avoid the lifting platform 5 from rising excessively when the drug container is pulled out upward. The drug pump 3 is electrically connected to the control system. The control system is used to control the opening and closing of the drug pump 3 and its power to control the amount of drug drawn.

[0025] Alternatively, the outlet of the vent needle 23 can be connected to the venting pipeline and the drug pump 3 via a solenoid reversing valve. In this way, by controlling the solenoid reversing valve, the vent needle 23 can be switched to be used as the vent needle for the medicine bottle or as the liquid extraction needle for the medicine bag.

[0026] The working principle of this device is as follows: When the outlet of the medicine container is inserted downward into the opening and pushes the annular lifting component 4 downward, the lifting platform 5 moves upward due to the presence of the rope 10 and pulley 8. The needle 6 on the lifting platform 5 pierces the rubber pad 7 and enters the medicine container, completing the connection between the drug pump 3 and the medicine container. At this time, the drug pump 3 can be turned on to extract the medicine liquid in the medicine container in a quantitative manner. After the drug extraction is completed, during the process of pulling out the medicine container, the annular lifting component 4 rises and resets under the elastic force of the first reset spring 9, the lifting platform 5 produces a downward action, the needle 6 automatically retracts into the rubber pad 7, and the puncture port of the rubber pad 7 closes due to the characteristics of the rubber pad 7 itself.

[0027] The inner diameter of the opening should be slightly larger than the outer diameter of the annular lifting member 4, while the inner diameter of the annular lifting member 4 should be smaller than the outer diameter of the medicine outlet of the medicine container, so that the medicine container can push the annular lifting member 4 to move.

[0028] The air inlet of the ventilation pipeline is located on the housing. An air filter can be installed at this air inlet to filter the air and reduce the impact on the liquid medicine in the medicine bottle. A one-way valve can be installed near the exhaust needle 23 of the ventilation pipeline to prevent the liquid medicine from entering the ventilation pipeline. Alternatively, a sterile water-resistant and breathable medical membrane can be installed at the needle port of the exhaust needle 23 to achieve the purpose of allowing only gas to enter the medicine bottle and preventing the liquid medicine from being discharged from the exhaust needle 23.

[0029] The tip of the vent needle 23 should be at a higher level than the tip of the needle 6 connected to the drug pump 3, so that the liquid level in the medicine bottle is lower than the air level, thus avoiding the gas being drawn out and affecting the accuracy of the drug volume.

[0030] Multiple press-on mechanisms 2 can be installed inside the housing 1. These multiple press-on mechanisms 2 are applied to medicine containers of different specifications (including medicine bags and medicine bottles of different specifications). At the same time, different press-on mechanisms 2 can be set for medicine containers of the same specification. The needles 6 inside are of different specifications so as to be suitable for drawing different types of medicine liquids. Different press-on mechanisms 2 can each correspond to a medicine pump 3, or they can share a medicine pump 3. However, an electromagnetic control valve needs to be installed on the hose between the lifting platform 5 and the medicine pump 3 to select the operation of a certain press-on mechanism 2 by controlling the on and off.

[0031] The pad 7 can be made of rubber or silicone. An annular groove is provided on the top of the annular lifting component 4 for embedding the pad 7. The embedding method can improve the ease of installation and disassembly of the pad 7.

[0032] Multiple pulleys 8 can be set, and multiple ropes 10 can be set accordingly. Multiple pulleys 8 are evenly arranged around the axis of the lifting platform 5 to avoid the problem of ropes 10 breaking and affecting the normal use of the device when there are too few pulleys 8.

[0033] The two ends of the rope 10 can be connected to the lifting platform 5 and the annular lifting component 4 by binding. A U-shaped component can be fixedly connected to the lifting platform 5 and the annular lifting component 4 for binding the rope 10.

[0034] The rubber pad 7 is detachably mounted on the top of the annular lifting component 4. The lifting platform 5 is equipped with an electric telescopic rod 11 and an electric clamping mechanism 12. The electric clamping mechanism 12 is mounted on the telescopic rod of the electric telescopic rod 11. The electric telescopic rod 11 is vertically positioned, and the needle 6 is located on the clamping path of the electric clamping mechanism 12. The electric clamping mechanism 12 can automatically clamp the needle 6 and pull the needle 6 out of the lifting platform 5 under the drive of the electric telescopic rod 11. By removing the rubber pad 7, the needle 6 can be conveyed out from the opening with the help of the electric telescopic rod 11, and a new needle 6 can be replaced, improving the convenience of replacing the needle 6. The electric clamping mechanism 12 can be a clamping mechanism with two clamping arms moving relative to each other, or it can be a clamping mechanism with two clamping arms swinging relative to each other. When dealing with multiple needles 6, multiple sets of electric telescopic rods 11 and electric clamping mechanisms 12 can be set to control different needles 6 respectively, or multiple needles 6 can be arranged in a row, and the clamping arm length of the electric clamping mechanism 12 can be extended to control multiple needles 6 simultaneously.

[0035] An annular guide 13 can be installed inside the housing 1. The annular guide 13 is connected to the inner wall of the housing 1. The outer diameter of the annular guide 13 is not less than the diameter of the opening. The annular guide 13 is coaxially arranged with the opening. The inner diameter of the annular guide 13 matches the outer diameter of the annular lifting member 4. The annular guide 13 can guide the lifting movement of the annular lifting member 4. At the same time, outside air at the opening can only enter the housing 1 through the gap between the annular guide 13 and the annular lifting member 4, reducing the area of ​​the housing 1 connected to the outside environment and further reducing the contamination of the needle 6. To mitigate the risk, based on the setting of the annular guide 13, the first reset spring 9 can be set on the annular guide 13. Specifically, the annular guide 13 has a groove, which can be multiple individual vertical strip grooves or a whole annular groove. The top of the annular lifting member 4 is provided with an outwardly extending blocking member, which can be multiple individual blocks or a whole annular member. The blocking member extends into the groove. The first reset spring 9 is set in the groove, with one end connected to the blocking member and the other end connected to the bottom wall of the groove. The number of first reset springs 9 can be set as needed.

[0036] The housing 1 is equipped with a second return spring 14 for resetting the lifting platform 5. The two ends of the second return spring 14 can be directly connected to the bottom of the lifting platform 5 and the housing 1 so that the lifting platform 5 can be reset and wait for the next operation after the medicine container is pulled out.

[0037] Since the design of the return spring provides the device with a reset capability, this reset force may affect the stable insertion and extraction of the medicine container. Therefore, an electromagnet 15 is installed inside the housing 1, and an iron block 16 is installed on the outer peripheral wall of the annular lifting component 4. The electromagnet 15 is located on one side of the descending path of the iron block 16. When the medicine container is inserted downwards, the electromagnet 15 is energized. When the iron block 16 moves to the position corresponding to the electromagnet 15, it is attracted by the electromagnet 15 to overcome the reset force and achieve the positioning of the annular lifting component 4. When it is necessary to pull out the medicine container, the power to the electromagnet 15 can be disconnected, so that it loses its attraction to the iron block 16, ensuring the convenience of pulling out the medicine container.

[0038] Based on the setting of the annular guide 13, the electromagnet 15 can be set on the inner wall of the groove of the annular guide 13, and the iron block 16 can be set on the outer peripheral wall of the blocking component. The specific setting positions of the electromagnet 15 and the iron block 16 can also be selected according to actual needs, with the aim of completing the descent positioning function.

[0039] A guide rod 17 can be installed at the bottom of the lifting platform 5, and a guide cylinder 18 can be installed inside the housing 1. The guide rod 17 is vertically slidably installed inside the guide cylinder 18 to guide the movement of the lifting platform 5.

[0040] Based on the setup of guide rod 17 and guide cylinder 18, a second return spring 14 can be installed between the bottom end of guide rod 17 and the inner bottom wall of guide cylinder 18 to make full use of space.

[0041] Based on the guide rod 17 and guide cylinder 18, an annular flange extending outwards can be provided at the bottom of the guide rod 17, and an annular baffle extending inwards can be provided at the top opening of the guide cylinder 18. The inner diameter of the annular baffle matches the outer diameter of the guide rod 17, and the inner diameter of the guide cylinder 18 matches the outer diameter of the annular flange. The annular baffle can block the annular flange to prevent the guide rod 17 from coming out of the guide cylinder 18. At the same time, this structure can be used as a limiting component to prevent the lifting platform 5 from rising excessively.

[0042] The limiting components can also be structures such as limiting rods and limiting blocks. The limiting rods and limiting blocks are directly fixed inside the housing 1 and are located above the lifting platform 5 to directly block the lifting platform 5.

[0043] A waste liquid tank 19 can be installed inside the housing 1. The outlet of the drug pump 3 is connected to the waste liquid tank 19. The waste liquid tank 19 can be used to store the extracted waste liquid, avoiding direct discharge and pollution of the surrounding environment.

[0044] A liquid level monitoring mechanism is installed inside the waste liquid tank 19. The liquid level monitoring mechanism can be a liquid level sensor. Both the liquid level monitoring mechanism and the alarm mechanism are electrically connected to the control system. The alarm mechanism can be an audible and visual alarm. The alarm mechanism is installed on the tank body 1. When the liquid level sensor detects that the current liquid level has reached the set height, the control system controls the alarm mechanism to sound an alarm, reminding the staff that the waste liquid tank 19 is full and needs to be emptied.

[0045] The waste liquid tank 19 can be set as a pull-out waste liquid tank, which can be pulled out from the tank body 1 by sliding the slide rail slider. At this time, a handle needs to be set on the outer wall of the waste liquid tank 19. Based on the pull-out nature of the waste liquid tank 19, an inlet is set on the top of the waste liquid tank 19. Both the inlet of the waste liquid tank 19 and the outlet of the drug pump 3 are equipped with sealing rings. After the waste liquid tank 19 is pushed into the tank body 1 and is in place, the two are fitted together to achieve a sealed connection.

[0046] An additional straightening mechanism for straightening the medicine container is provided on the top of the box 1. The straightening mechanism can be a telescopic cylinder 20. Specifically, telescopic cylinders 20 are provided on both sides of the opening. Both telescopic cylinders 20 extend simultaneously to straighten the medicine container. A flexible pad can be provided at the telescopic end of the telescopic cylinder 20 to avoid clamping and damaging the medicine container. Alternatively, a corresponding straightening block 21 can be provided at the telescopic end of the telescopic cylinder 20. A flexible pad is provided on the straightening block 21, and the straightening block 21 is used to replace the telescopic end of the telescopic cylinder 20 to straighten the medicine container.

[0047] An anti-slip pad is installed at the bottom of the box 1 to increase the friction between the box 1 and the placement platform and enhance the stability of the box 1.

[0048] An opening and closing door structure can be designed on one side of the housing 1, which allows for convenient maintenance of the internal parts.

[0049] A partition 22 is provided inside the housing 1. Above the partition 22 is the space where the press-to-connect mechanism 2 is located. Below the partition 22 is the space where the waste liquid tank 19, power supply and control system are located. The housing 1 needs to have openings for heat dissipation at the location corresponding to the power supply.

[0050] In actual use, the medicine container is inserted downwards into the opening, the annular lifting component 4 is lowered, and the lifting platform 5 rises synchronously. The needle 6 passes through the rubber pad 7 and is inserted into the medicine container. At this time, the drug pump 3 can be started to draw the medicine. The drawn medicine is discharged into the waste liquid tank 19. The amount of medicine drawn by the drug pump 3 can be set by the control system. After the medicine is drawn, the remaining amount of medicine required for intravenous infusion in the medicine container is then removed. The lifting platform 5 and the annular lifting component 4 are reset to wait for the next medicine drawing operation. When drawing medicine from different medicine containers for the same medicine, the needle 6 can be changed after a period of time. If the medicine to be drawn next time is different, or if a different size needle 6 is required for smooth medicine drawing, the needle 6 can be changed using the electric telescopic rod 11 and the electric clamping mechanism 12.

[0051] Any adaptive changes made according to actual needs are within the scope of protection of this invention.

[0052] It should be noted that, for those skilled in the art, it is obvious that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Specific examples have been used to illustrate the principles and implementation methods of this invention. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this invention. Furthermore, those skilled in the art will recognize that, based on the ideas of this invention, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this invention.

Claims

1. An electric medicine extractor, characterized in that, The device includes a housing, a press-to-connect mechanism, and a drug-drawing pump. The press-to-connect mechanism is located inside the housing and includes a ring-shaped lifting member, a lifting platform, and a needle assembly. The needles of the needle assembly are inserted into the lifting platform. At least one needle of the needle assembly is connected to the drug-drawing pump through the lifting platform. When the medicine container is a medicine bottle, at least one needle of the needle assembly serves as an exhaust needle, which is connected to a venting pipe through the lifting platform. The ring-shaped lifting member is sleeved around the outer periphery of the lifting platform. The top of the ring-shaped lifting member is provided with a rubber pad for the needle to pierce through. The housing has an outlet for the medicine container to abut against the opening at the top of the ring-shaped lifting member. At least two pulleys with a constant horizontal height are provided between the ring-shaped lifting member and the lifting platform. A rope is connected between the ring-shaped lifting member and the lifting platform and is wound around the pulleys. The ring-shaped lifting member is connected to a first return spring for resetting. A limiting member is provided inside the housing to prevent the lifting platform from rising excessively. The drug-drawing pump is electrically connected to a control system.

2. The electric drug extractor according to claim 1, characterized in that, The rubber pad is detachably mounted on the top of the annular lifting component. An electric telescopic rod and an electric clamping mechanism are provided on the lifting platform. The electric clamping mechanism is mounted on the telescopic rod of the electric telescopic rod. The electric telescopic rod is vertically arranged, and the needle is located on the clamping path of the electric clamping mechanism.

3. The electric drug extractor according to claim 1, characterized in that, An annular guide is provided inside the housing, and the annular guide is connected to the inner wall of the housing. The outer diameter of the annular guide is not less than the diameter of the opening. The annular guide is coaxially arranged with the opening. The inner diameter of the annular guide matches the outer diameter of the annular lifting member. A groove is provided on the annular guide. An outwardly extending blocking member is provided at the top of the annular lifting member. The blocking member extends into the groove. The first reset spring is disposed in the groove.

4. The electric drug extractor according to claim 1, characterized in that, The housing is equipped with a second reset spring for resetting the lifting platform.

5. The electric drug extractor according to claim 1, characterized in that, An electromagnet is installed inside the box, and an iron block is installed on the outer peripheral wall of the annular lifting component. The electromagnet is located on one side of the descending path of the iron block.

6. The electric drug extractor according to claim 1, characterized in that, The bottom of the lifting platform is provided with a guide rod, and the box body is provided with a guide cylinder. The guide rod is vertically slidably disposed in the guide cylinder.

7. The electric drug extractor according to claim 1, characterized in that, The box is equipped with a waste liquid tank, and the outlet of the drug pump is connected to the waste liquid tank.

8. The electric drug extractor according to claim 7, characterized in that, The waste liquid tank is equipped with a liquid level monitoring mechanism. Both the liquid level monitoring mechanism and the alarm mechanism are electrically connected to the control system. The alarm mechanism is located on the tank body.

9. The electric drug extractor according to claim 7, characterized in that, The waste liquid tank is a pull-out type.

10. The electric drug extractor according to claim 1, characterized in that, The top of the box is equipped with a straightening mechanism for uprighting the medicine container.

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