Automatic dosing device for a hydraulic infusion pump

Abstract

The application discloses an automatic medicine adding device of a hydraulic infusion pump and belongs to the technical field of medicine adding of the hydraulic infusion pump. The automatic medicine adding device comprises a base, a panel arranged on the base and used for mounting an infusion pump body, a medicine adding part, an angle sensor, a liquid-electric switch and an electrode sheet. The medicine adding part comprises a medicine bottle, a push rod and a medicine adding needle. The angle sensor is arranged on the panel and used for monitoring the mounting angle of the infusion pump body. The liquid-electric switch is arranged on the infusion pump body and used for controlling the on-off of the circuit and the liquid path of the infusion pump body. The electrode sheet is arranged at the position of a medicine liquid overflow outlet of the infusion pump body and used for monitoring whether the medicine liquid overflows. The automatic medicine adding device can realize the rapid supplement of the medicine liquid into the medicine storage device of the infusion pump, and the medicine liquid can be effectively prevented from being polluted in the transportation process without using a syringe for the transportation of the medicine liquid. Furthermore, the loss of the medicine liquid caused by the use of the syringe can be avoided.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic infusion pump dosing technology, and particularly relates to an automatic dosing device for a hydraulic infusion pump. Background Technology

[0002] A hydraulic infusion pump is a device that uses a positive displacement micro-pump to draw hydraulic fluid from a drug reservoir and pump it into the liquid chamber of a hydraulic drug reservoir. This causes the piston of the hydraulic drug reservoir to move forward, thereby pumping out the liquid from the drug chamber. When the hydraulic infusion pump leaves the factory, the positive displacement micro-pump is not pre-filled with liquid. Therefore, when starting the hydraulic infusion pump, the hydraulic fluid in the positive displacement micro-pump and the liquid chamber of the hydraulic drug reservoir must be filled first.

[0003] Currently, hydraulic infusion pumps have the following problems in actual use:

[0004] 1. When using infusion pump products, users need to manually draw the medicine from the bottle with a syringe and then inject it into the reservoir of the infusion pump. During this process, air bubbles and contamination are easily introduced. If the medicine is then injected into the human body, it can easily cause personal injury. Secondly, during the transfer of medicine, some medicine will be lost due to the dead volume in the syringe chamber.

[0005] 2. When using the infusion pump product, users need to manually turn on the circuit / hydraulic switch to enter the product's self-starting program for venting. The operation is relatively complicated. In most cases, users will choose to add the medicine and then turn on the hydraulic switch to start the self-starting program, or turn on the hydraulic switch first to start the self-starting program and then add the medicine after the program is completed. In both cases, the user's preparation time is relatively long.

[0006] 3. If users do not pay attention to the angle of the product when adding the medicine, and add medicine when the product is tilted at a large angle, the gas originally stored in the medicine reservoir will not be able to be discharged from the exhaust channel at the top, and will remain inside the medicine reservoir. This will affect the pumping accuracy on the one hand, and may also cause the gas to be pumped into the human body, causing personal injury.

[0007] 4. When loading the medicine, users need to visually determine whether the loading is complete. This can easily lead to misjudgment. One possibility is that the medicine is not fully loaded but the user thinks it is, which could cause internal gas to be pumped into the body and cause personal injury. Another possibility is that the user fills the medicine completely but cannot see the dripping liquid and thinks it is not full, so they continue to add medicine, ultimately resulting in the loss of the medicine. Summary of the Invention

[0008] This invention overcomes the shortcomings of the prior art and provides an automatic dosing device for a hydraulic infusion pump to solve the problems existing in the prior art.

[0009] To achieve the above objectives, the technical solution adopted by the present invention is: an automatic dosing device for a hydraulic infusion pump, comprising...

[0010] A base, on which a panel is provided for mounting the infusion pump body;

[0011] The medication dispensing unit includes a medicine bottle, a push rod, and a dispensing needle. The medicine bottle is mounted on the panel. A sealing rubber stopper is provided at the first end of the medicine bottle, and a push piston is provided at the second end. The push rod is located at the second end of the medicine bottle and pushes the medicine bottle and the push piston in sequence. The dispensing needle is located at the first end of the medicine bottle. One end of the dispensing needle corresponds to the position of the sealing rubber stopper, and the other end is located in the drug reservoir of the infusion pump body. After the dispensing needle pierces the sealing rubber stopper, the push piston pressurizes and pushes the medicine bottle, and the medicine enters the drug reservoir through the dispensing needle.

[0012] An angle sensor, located on the panel, is used to monitor the installation angle of the infusion pump body;

[0013] A hydraulic-electric switch is located on the body of the infusion pump to control the on / off state of the circuit and the liquid path of the infusion pump body.

[0014] An electrode plate is located at the drug overflow port of the infusion pump body to monitor whether the drug overflows.

[0015] In a preferred embodiment of the present invention, a bracket is provided on the panel, and a mounting groove is provided on the bracket. The medicine bottle is detachably mounted in the mounting groove, and the push rod is located in the mounting groove to push the medicine bottle and the push piston in sequence.

[0016] In a preferred embodiment of the present invention, the bracket is provided with a push spring and an unlocking knob. The push spring is connected to the push rod and drives the push rod, and the unlocking knob locks or unlocks the push spring.

[0017] In a preferred embodiment of the present invention, a trigger spring and a trigger switch are provided inside the bracket. After the medicine bottle is placed into the bracket, the trigger switch is triggered by pressure.

[0018] In a preferred embodiment of the present invention, the trigger switch is connected to the electrohydraulic unlocking switch via a linkage rope. When the trigger switch is triggered, the electrohydraulic switch is opened via the linkage rope and the electrohydraulic unlocking switch.

[0019] In a preferred embodiment of the present invention, the angle sensor is mounted on the panel via a circuit board, and the circuit board is provided with a PIN pin. When the infusion pump body is mounted on the panel, the PIN pin is inserted into the infusion pump body to form a conductive circuit.

[0020] In a preferred embodiment of the present invention, a resistor is provided on the angle sensor. After the infusion pump body is installed on the panel, when the current in the conducting circuit is less than the ratio of voltage to resistance, the current flows through the resistor, and the infusion pump body is installed in place with the panel. When the current in the conducting circuit is greater than the ratio of voltage to resistance, the current does not flow through the resistor, and the infusion pump body is not installed in place with the panel. When the current in the conducting circuit is equal to the ratio of voltage to resistance, the circuit is broken, and the infusion pump body is detached from the panel.

[0021] In a preferred embodiment of the present invention, an exhaust needle is provided on the panel. The exhaust needle is inserted into the medicine reservoir. When the electrohydraulic switch is turned on, the gas in the medicine reservoir is discharged.

[0022] In a preferred embodiment of the present invention, an infusion fitting is provided on the top of the medicine storage device, and the medicine overflow port is located at the end of the infusion fitting, through which the medicine overflows.

[0023] In a preferred embodiment of the present invention, there are two electrode plates with a gap between them. When the medicine overflows, the medicine drips between the two electrode plates, so that the two electrode plates form a passage through the conductive medicine to ensure that the medicine is filled.

[0024] This invention addresses the shortcomings of the prior art and has the following beneficial effects:

[0025] 1. The automatic drug dispensing device of the present invention enables the rapid replenishment of drug solution into the storage tank of the infusion pump. In this process, there is no need to use a syringe for drug solution transfer, which can effectively avoid the drug solution from being contaminated during the transfer process, and also avoid the loss of drug solution caused by the use of a syringe.

[0026] 2. After the medicine bottle is filled, the automatic dosing device of the present invention can link the hydraulic switch, eliminating the need for manual opening and closing of the hydraulic switch, thus improving efficiency and effectively preventing the situation where the hydraulic switch is not turned on due to human forgetfulness.

[0027] 3. The automatic dosing device of the present invention uses an angle sensor to monitor the angle of the hydraulic infusion pump, so as to avoid the installation angle of the hydraulic infusion pump being too large, which is conducive to the stable discharge of gas in the medicine storage container, avoids the situation of gas stagnation in the medicine storage container, improves the pumping accuracy of the medicine, and can also effectively prevent gas from being pumped into the human body.

[0028] 4. The automatic dosing device of the present invention uses electrode plates to confirm the filling of the drug solution, eliminating the need for manual visual confirmation, improving the confirmation accuracy, and effectively avoiding the loss of drug solution. Attached Figure Description

[0029] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0030] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0031] Figure 2 for Figure 1 A schematic diagram of the structure after removing the infusion pump body and the medicine bottle;

[0032] Figure 3 for Figure 2 Another perspective view;

[0033] Figure 4 for Figure 1 A sectional view;

[0034] Figure 5 for Figure 4 A schematic diagram of the structure of removing the medicine bottle;

[0035] Figure 6 This is a schematic diagram of the structure of the infusion pump body according to a preferred embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the back of the infusion pump body according to a preferred embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the structure of the exhaust needle for venting in a preferred embodiment of the present invention;

[0038] In the diagram: 10. Base; 11. Panel; 12. Infusion pump body; 121. Drug reservoir; 122. Slot; 20. Dosing section; 21. Drug bottle; 211. Sealing stopper; 212. Push piston; 22. Push rod; 23. Dosing needle; 30. Angle sensor; 31. PIN needle; 40. Electrohydraulic switch; 50. Electrode plate; 60. Bracket; 601. Mounting slot; 61. Push spring; 62. Unlock knob; 63. Trigger spring; 64. Trigger switch; 70. Linkage rope; 80. Resistor; 90. Exhaust needle; 100. Infusion accessories; 110. Fixing buckle. Detailed Implementation

[0039] The following drawings will disclose several embodiments of the present invention. For clarity, many physical details will be described in the following description. However, it should be understood that these physical details are not intended to limit the invention. That is, in some embodiments of the invention, these physical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0040] Furthermore, in this invention, the use of terms such as "first" and "second" is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish components or operations described using the same technical terms, and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, such a combination should be considered nonexistent and not within the scope of protection claimed by this invention.

[0041] This embodiment provides an automatic drug dosing device for a hydraulic infusion pump. This automatic drug dosing device enables the rapid replenishment of the drug solution into the drug reservoir 121 of the infusion pump. In this process, there is no need to use a syringe to transfer the drug solution, which can effectively avoid the contamination of the drug solution during the transfer process and also avoid the loss of the drug solution caused by the use of a syringe.

[0042] Combination Figures 1 to 7 As shown, the automatic drug dispensing device of this embodiment includes a base 10, a drug dispensing unit 20, an angle sensor 30, a hydraulic-electric switch 40, and an electrode plate 50. A panel 11 is provided on the base 10 to mount the infusion pump body 12. The drug dispensing unit 20 performs drug dispensing operation on the drug reservoir 121 of the infusion pump body 12. The angle sensor 30 detects the angle of the base 10 to obtain the angle of the infusion pump body 12, which is installed parallel to the panel 11, to avoid the installation angle of the infusion pump body 12 not meeting the requirements. The hydraulic-electric switch 40 can be opened in conjunction with the drug dispensing unit 20, and the electrode plate 50 can monitor the drug dispensing status of the drug reservoir 121 to avoid over-dosing and reduce drug loss.

[0043] In this embodiment, the angle sensor 30 is located on the panel 11 to monitor the installation angle of the infusion pump body 12. The electrohydraulic switch 40 is located on the infusion pump body 12, and the panel 11 is provided with an electrohydraulic unlocking switch. By pressing the electrohydraulic switch 40 on the infusion pump body 12, the circuit and liquid path of the infusion pump body 12 are controlled to open. The electrode plate 50 is located at the medicine overflow port of the infusion pump body 12 to monitor whether the medicine overflows.

[0044] Specifically, a hydraulic-electric unlocking switch is provided on the base 10, which is used to press the hydraulic-electric switch 40 on the infusion pump body 12, thereby opening the internal circuit and liquid path of the infusion pump body 12. The hydraulic-electric unlocking switch has a compression spring on its back and its front is close to the upper surface of the hydraulic-electric switch 40. In its initial state, it is locked in a certain position by the hydraulic-electric unlocking switch buckle. When the linkage rope 70 pulls open the hydraulic-electric unlocking switch buckle, the hydraulic-electric unlocking switch is pushed forward under the action of the spring, thereby pressing the hydraulic-electric switch 40, so that the internal circuit and liquid path of the infusion pump body 12 are connected. In this embodiment, the infusion pump body 12 and the panel 11 are connected by a fixing buckle 110. The infusion pump body 12 has a slot 122. The fixing buckle 110 cooperates with the slot 122 to ensure that the infusion pump body 12 will not be lifted when the hydraulic-electric unlocking switch is released, so as not to cause the hydraulic-electric switch 40 to malfunction.

[0045] Combination Figure 1 , Figure 2 , Figure 4 as well as Figure 5 As shown, the medication dispensing unit 20 in this embodiment includes a medicine bottle 21, a push rod 22, and a medication dispensing needle 23. The medicine bottle 21 is mounted on the panel 11. A sealing rubber stopper 211 is provided at the first end of the medicine bottle 21, and a push piston 212 is provided at the second end. The push rod 22 is located at the second end of the medicine bottle 21 and pushes the medicine bottle 21 and the push piston 212 in sequence. The medication dispensing needle 23 is located at the first end of the medicine bottle 21. In this embodiment, the medication dispensing needle 23 is a curved needle. One end of the medication dispensing needle 23 corresponds to the position of the sealing rubber stopper 211, and the other end is located in the drug reservoir 121 of the infusion pump body 12. The medication dispensing needle 23 pushes the sealing rubber stopper 211... After puncture, the push piston 212 pressurizes and pushes the medicine bottle 21, and the medicine enters the medicine reservoir 121 through the dosing needle 23. After the medicine bottle 21 is installed, the push rod 22 pushes the medicine bottle 21 until the stroke of the medicine bottle 21 ends. At this time, the dosing needle 23 punctures the sealing rubber stopper 211 at the first end of the medicine bottle 21, releasing the sealing state inside the medicine bottle 21. Then the push rod 22 continues to push the push piston 212 to move inside the medicine bottle 21. Driven by the push piston 212, the medicine in the medicine bottle 21 enters the medicine reservoir 121 through the dosing needle 23, thereby completing the dosing process of the medicine reservoir 121.

[0046] In this embodiment, a bracket 60 is provided on the panel 11, and a mounting groove 601 is provided on the bracket 60. The medicine bottle 21 is detachably installed in the mounting groove 601, and the push rod 22 is located in the mounting groove 601 to push the medicine bottle 21 and the push piston 212 in sequence to perform the drug dispensing operation.

[0047] Furthermore, the bracket 60 is equipped with a push spring 61 and an unlocking knob 62. The push spring 61 is connected to and drives the push rod 22. The unlocking knob 62 locks or unlocks the push spring 61. After the medicine bottle 21 is loaded, the push spring 61 is in a compressed state and has compressive force. After the unlocking knob 62 is released, the push spring 61 is released from the compressed state and drives the push rod 22, so that the push rod 22 can push the medicine bottle 21 and the push piston 212 in sequence to complete the drug addition process. The push spring 61 drives the push rod 22, which has a simple structure and achieves stable drive of the push rod 22, improving the motion stability of the push rod 22 and stably controlling the maximum stroke of the push rod 22, avoiding insufficient or excessive stroke of the push rod 22. The unlocking knob 62 can lock or unlock the push spring 61, which is conducive to the rapid and stable loading of the medicine bottle 21. The unlocking knob 62 facilitates user operation and can also effectively prevent user misoperation.

[0048] Combination Figure 2 , Figure 3 as well as Figure 5 As shown, the bracket 60 in this embodiment is equipped with a trigger spring 63 and a trigger switch 64. When the medicine bottle 21 is not installed, the trigger switch 64 protrudes from the inner surface of the medicine bottle 21 mounting part under the action of the trigger spring 63, which has the function of blocking the push rod. That is, the trigger switch 64 also has the function of preventing accidental activation of the push rod. When the medicine bottle 21 is not installed, even if the user accidentally opens the push rod unlocking knob, the push rod will not move forward. After the medicine bottle 21 is installed into the mounting groove 601 of the bracket 60, the trigger switch 64 is triggered by pressure. The trigger switch 64 is connected to the hydraulic switch 40 through the linkage rope 70. When the trigger switch 64 is triggered, the hydraulic switch 40 is opened through the linkage rope 70. After the medicine bottle 21 is installed, the trigger switch 64 is triggered by pressure, and the hydraulic switch 40 is opened under the action of the linkage rope 70. Thus, the circuit and liquid circuit inside the infusion pump body 12 are opened.

[0049] Specifically, in this embodiment, a switch latch is provided at the position of the electrohydraulic switch 40. In the initial state, the trigger switch 64 is not triggered, and the linkage rope 70 is in a taut state. The electrohydraulic switch 40 is in a closed state through the switch latch. When the trigger switch 64 is triggered by pressure, it will pull the linkage rope 70, which will further pull the switch latch at the end of the linkage rope 70 from the latched position, so that the electrohydraulic unlocking switch is released. Then, the electrohydraulic switch 40 of the infusion pump body 12 is pressed, and the electrohydraulic switch 40 is in an open state. Therefore, after the medicine bottle 21 is installed, the linkage processing of the electrohydraulic switch 40 can be realized. In this process, there is no need to manually open and close the electrohydraulic switch 40, which improves efficiency and can also effectively avoid the situation where the electrohydraulic switch 40 is not opened due to human forgetfulness.

[0050] In this embodiment, the linkage rope 70 can be connected to the rotary unlocking switch. By opening the rotary unlocking switch and pulling the linkage rope 70, the electro-hydraulic unlocking switch is opened, and finally the electro-hydraulic switch 40 on the infusion pump body 12 is opened.

[0051] Combination Figure 2 and Figure 3 As shown, the angle sensor 30 is mounted on the panel 11 via a circuit board. The circuit board is equipped with a PI N pin 31. When the infusion pump body 12 is mounted on the panel 11, the PI N pin 31 is inserted into the infusion pump body 12 to form a conductive circuit. After the infusion pump body 12 is installed, the PI N pin 31 is inserted into the infusion pump body 12. At this time, the angle sensor 30 detects the installation angle of the infusion pump body 12 according to the formed conductive circuit. The angle sensor 30 obtains the angle of the infusion pump body 12, which is installed parallel to the panel 11, by detecting the angle of the base 10.

[0052] Specifically, the angle sensor 30 is equipped with a resistor 80. After the infusion pump body 12 is installed on the panel 11, when the current in the conducting circuit is less than the ratio of voltage to resistance, the current flows through the resistor 80, and the infusion pump body 12 is properly installed on the panel 11. When the current in the conducting circuit is greater than the ratio of voltage to resistance, the current does not flow through the resistor 80, and the infusion pump body 12 is not properly installed on the panel 11. When the current in the conducting circuit is equal to the ratio of voltage to resistance 80, the circuit is broken, and the infusion pump body 12 is detached from the panel 11.

[0053] In this embodiment, if the current in the conducting circuit is 10-20mA, it indicates that the current passes through resistor 80, and thus indicates that the installation angle between the infusion pump body 12 and the panel 11 is within a predetermined range. If the current in the conducting circuit is 30-40mA, it indicates that the current does not pass through resistor 80, and thus indicates that the installation angle between the infusion pump body 12 and the panel 11 is not within a predetermined range. If the current in the conducting circuit is 0, it indicates that the circuit is open, and thus indicates that the infusion pump body 12 is detached from the panel 11. In this embodiment, the current value is read by an external ammeter. The installation angle of the infusion pump body 12 on the panel 11 is determined according to the different current values.

[0054] Combination Figure 2 , Figure 6 as well as Figure 7 As shown, the panel 11 of this embodiment is provided with an exhaust needle 90. When the hydraulic switch 40 is turned on, the exhaust needle 90 is inserted into the medicine reservoir 121 to expel the gas inside the medicine reservoir 121. A waterproof and breathable membrane is provided at the end of the exhaust needle 90. When the medicine enters the medicine reservoir 121, it will compress the gas inside the medicine reservoir 121, causing the gas to be discharged through the exhaust needle 90. When the medicine is stored in the medicine reservoir 121, all the gas is discharged from the medicine reservoir 121, avoiding the situation of gas stagnation in the medicine reservoir 121. This improves the pumping accuracy of the medicine in the subsequent infusion pump body 12 in actual use and can also effectively prevent gas from being pumped into the human body and causing human injury.

[0055] In this embodiment, the top of the medicine storage container 121 is provided with an infusion accessory 100. The medicine overflow port is located at the end of the infusion accessory 100. After the medicine storage container 121 is full, the excess medicine overflows through the end of the infusion accessory 100. There are two electrode plates 50 with a gap between them. When the medicine overflows to the gap, the two electrode plates 50 are connected to determine that the medicine is full. Since the medicine has weak conductivity, when the medicine drips into the gap between the two electrode plates 50, it will cause the two electrode plates 50 to be connected to form a circuit. The circuit monitoring can determine whether the medicine is full. In this process, there is no need for manual visual confirmation, which improves the confirmation accuracy and can also effectively avoid the loss of medicine.

[0056] In this embodiment, the automatic drug dispensing device of the hydraulic infusion pump is used in practical applications. The medicine bottle 21 is loaded into the mounting slot 601 of the bracket 60. At this time, the trigger switch 64 is triggered by pressure, and the hydraulic-electric switch 40 is opened via the linkage rope 70. The loaded medicine bottle 21 is pushed by the push rod 22 until the sealing rubber stopper 211 at the first end of the medicine bottle 21 is pierced by the drug dispensing needle 23. Then, the push rod 22 continues to push the push piston 212, which squeezes the liquid medicine in the medicine bottle 21, so that the liquid medicine enters the medicine storage tank 121 of the infusion pump body 12 through the drug dispensing needle 23. When the hydraulic-electric switch 40 is opened, the vent needle 90 vents the medicine storage tank 121 to prevent the presence of gas in the medicine storage tank 121, thereby improving the pumping accuracy of the medicine liquid in the infusion pump body 12 during actual use.

[0057] In this embodiment, the automatic dosing device uses an angle sensor 30 to monitor the angle of the hydraulic infusion pump, effectively avoiding excessive installation angle of the hydraulic infusion pump. This facilitates the stable discharge of gas from the storage tank 121, preventing gas from stagnating in the storage tank 121, improving the pumping accuracy of subsequent medication, and effectively preventing gas from being pumped into the human body. In addition, an electrode plate 50 is used to confirm the filling of the medication, eliminating the need for manual visual confirmation, improving the confirmation accuracy, and effectively preventing medication loss.

[0058] While the invention has been described above with reference to various embodiments, it should be understood that many changes and modifications can be made without departing from the scope of the invention. That is, the methods, systems, or devices discussed above are merely examples. Various configurations can be appropriately omitted, substituted, or added to various processes or components. For example, in alternative configurations, methods can be performed in a different order than described, and / or various stages can be added, omitted, and / or combined. Moreover, features described with respect to certain configurations can be combined in various other configurations. Different aspects and elements of the configuration can be combined in a similar manner. Furthermore, as technology develops, many elements are merely examples and do not limit the scope of this disclosure or the claims.

[0059] Specific details are provided in the specification to offer a thorough understanding of exemplary configurations, including implementations. However, configurations can be practiced without these specific details; for example, well-known circuits, processes, algorithms, structures, and techniques have been shown without unnecessary detail to avoid obscuring the configuration. This description provides only exemplary configurations and does not limit the scope, applicability, or configuration of the claims. Rather, the foregoing description of the configurations will provide those skilled in the art with an enabling description for implementing the described techniques. Various changes can be made to the function and arrangement of the elements without departing from the spirit or scope of this disclosure.

[0060] Furthermore, although each operation can be described as a sequential process, many operations can be executed in parallel or simultaneously. Additionally, the order of operations can be rearranged. A process may have additional steps. Moreover, examples of methods can be implemented using hardware, software, firmware, middleware, code, hardware description languages, or any combination thereof. When implemented in software, firmware, middleware, or code, the program code or code segments used to perform the necessary tasks can be stored in a non-transitory computer-readable medium such as a storage medium and executed by a processor.

[0061] In summary, the above detailed description is intended to be exemplary rather than limiting, and it should be understood that the claims (including all equivalents) are intended to define the spirit and scope of the invention. These embodiments should be understood as illustrative only and not as limiting the scope of protection of the invention. After reading this description, those skilled in the art can make various alterations or modifications to the invention, and these equivalent changes and modifications also fall within the scope defined by the claims.

Claims

1. An automatic dosing device for a hydraulic infusion pump, characterized in that, include A base (10) on which a panel (11) is provided for mounting the infusion pump body (12); The dosing unit (20) includes a medicine bottle (21), a push rod (22), and a dosing needle (23). The medicine bottle (21) is mounted on the panel (11). A sealing rubber stopper (211) is provided at the first end of the medicine bottle (21), and a push piston (212) is provided at the second end. The push rod (22) is located at the second end of the medicine bottle (21) and pushes the medicine bottle (21) and the push piston (212) in sequence. The dosing needle (23) is located at the first end of the medicine bottle (21). One end of the dosing needle (23) corresponds to the position of the sealing rubber stopper (211), and the other end is located in the medicine reservoir (121) of the infusion pump body (12). After the dosing needle (23) pierces the sealing rubber stopper (211), the pressure is applied to the inside of the medicine bottle (21) by the push piston (212), and the medicine liquid enters the medicine reservoir (121) through the dosing needle (23). An angle sensor (30) is located on the panel (11) to monitor the installation angle of the infusion pump body (12); A hydraulic-electric switch (40) is located on the infusion pump body (12) to control the circuit opening and closing and the liquid circuit opening and closing of the infusion pump body (12); Electrode (50) is located at the drug overflow port of the infusion pump body (12) to monitor whether the drug overflows.

2. The automatic dosing device for a hydraulic infusion pump according to claim 1, characterized in that, A bracket (60) is provided on the panel (11), and a mounting groove (601) is provided on the bracket (60). The medicine bottle (21) is detachably installed in the mounting groove (601), and the push rod (22) is located in the mounting groove (601) to push the medicine bottle (21) and the push piston (212) in sequence.

3. The automatic dosing device for a hydraulic infusion pump according to claim 2, characterized in that, The bracket (60) is provided with a push spring (61) and an unlocking knob (62). The push spring (61) is connected to the push rod (22) and drives the push rod (22). The unlocking knob (62) locks or unlocks the push spring (61).

4. The automatic dosing device for a hydraulic infusion pump according to claim 2, characterized in that, The bracket (60) is equipped with a trigger spring (63) and a trigger switch (64). After the medicine bottle (21) is installed in the bracket (60), the trigger switch (64) is triggered by pressure.

5. An automatic dosing device for a hydraulic infusion pump according to claim 4, characterized in that, The trigger switch (64) is connected to the electrohydraulic unlocking switch via the linkage rope (70). When the trigger switch (64) is triggered, the electrohydraulic switch (40) is opened via the linkage rope (70) and the electrohydraulic unlocking switch.

6. An automatic dosing device for a hydraulic infusion pump according to claim 1, characterized in that, The angle sensor (30) is mounted on the panel (11) via a circuit board. The circuit board is provided with a PIN pin (31). When the infusion pump body (12) is mounted on the panel (11), the PIN pin (31) is inserted into the infusion pump body (12) to form a conductive circuit.

7. An automatic dosing device for a hydraulic infusion pump according to claim 6, characterized in that, The angle sensor (30) is equipped with a resistor (80). After the infusion pump body (12) is installed on the panel (11), when the current of the conducting circuit is less than the ratio of voltage to resistance, the current passes through the resistor (80), and the infusion pump body (12) and the panel (11) are installed in place. When the current of the conducting circuit is greater than the ratio of voltage to resistance, the current does not pass through the resistor (80), and the infusion pump body (12) and the panel (11) are not installed in place. When the current of the conducting circuit is equal to the ratio of voltage to resistance, the circuit is broken, and the infusion pump body (12) is detached from the panel (11).

8. An automatic dosing device for a hydraulic infusion pump according to claim 1, characterized in that, An exhaust needle (90) is provided on the panel (11). The exhaust needle (90) is inserted into the medicine reservoir (121). When the electrohydraulic switch (40) is turned on, the gas in the medicine reservoir (121) is discharged.

9. An automatic dosing device for a hydraulic infusion pump according to claim 1, characterized in that, The top of the medicine storage device (121) is provided with an infusion fitting (100), and the medicine overflow port is located at the end of the infusion fitting (100), through which the medicine overflows.

10. An automatic dosing device for a hydraulic infusion pump according to claim 1, characterized in that, The number of electrode plates (50) is two and there is a gap between them. When the medicine overflows, the medicine drips between the two electrode plates (50), so that the two electrode plates (50) form a passage through the conductive medicine to ensure that the medicine is filled.

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