Infusion pump dosing device

Abstract

The utility model relates to the field of medicine adding devices, and discloses an infusion pump medicine adding device which comprises a liquid storage part and a pump body, the liquid storage part comprises a hollow liquid storage shell, an adjusting part movably arranged on the liquid storage shell in the vertical direction, a liquid inlet pipe arranged on the liquid storage shell and a liquid outlet pipe arranged on the liquid storage shell and connected with the pump body, the adjusting part divides an inner cavity of the liquid storage shell into a sealed liquid storage cavity and a movable cavity communicated with the outside of the liquid storage shell, the liquid inlet pipe and the liquid outlet pipe movably penetrate through the movable cavity and penetrate into the liquid storage cavity, and scale marks facilitating observation of scale changes of the liquid storage cavity are arranged on the liquid storage shell. Through the cooperative use of the liquid storage shell, the adjusting part and the scale marks, before the pump body operates, the adjusting part can be adjusted by observing the scale marks in advance so as to adjust the capacity of the liquid storage cavity, the capacity adjustment of the liquid storage cavity is not affected no matter what state the pump body is in, and after the liquid storage cavity is filled with the medicine, the liquid storage cavity is filled with the medicine. The medicine dosage can be accurately kept at the adjusted capacity, the required medicine dosage is accurately output through cooperation of the pump body and the liquid outlet pipe, input of redundant medicine is avoided, and use safety of the medicine is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of drug adding devices, in particular to an infusion pump drug adding device. Background Art

[0002] An infusion pump is an intelligent infusion device that uses mechanical driving force to accurately control the number of infusion drops and the infusion flow rate to ensure accurate metering and safe entry into the patient's body. Infusion pumps are widely used in postoperative analgesia, chemotherapy and other micro-continuous or intermittent drug administration. The use of infusion pumps can be assisted by doctors and nurses to inject patients, or patients can adjust the dosage according to the degree of pain. Therefore, the clinical application of infusion pumps has greatly improved the accuracy, safety and quality of care of infusions.

[0003] In actual use, the infusion pump is usually connected to a container for adding medicine, such as a medicine bottle, an infusion bag, etc. First, the medicine to be used is injected into the corresponding container, and then the container is connected to the infusion pump for delivering the medicine. However, the amount of medicine in the existing container is only judged by the scale line on the container. During use, once the container is overturned, or if the infusion bag is made of flexible material, it is difficult to accurately control the delivery of the medicine amount during use, which increases the difficulty of operation for patients who need to accurately control the amount of medicine input. Utility Model Content

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide an infusion pump dosing device to solve the problem of difficulty in controlling the dosage of the drug.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide an infusion pump dosing device including a liquid storage part and a pump body, the liquid storage part including an internally hollow liquid storage shell, an adjusting part movably arranged on the liquid storage shell along the vertical direction, a liquid inlet pipe arranged on the liquid storage shell, and a liquid outlet pipe arranged on the liquid storage shell and connected to the pump body, the adjusting part divides the inner cavity of the liquid storage shell into a sealed liquid storage cavity and an active cavity connected to the outside of the liquid storage shell, the liquid inlet pipe and the liquid outlet pipe both movably pass through the active cavity and penetrate into the liquid storage cavity, and scale lines are arranged on the liquid storage shell for facilitating observation of changes in the scale of the liquid storage cavity, so that the capacity of the liquid storage shell can be limited by cooperating with the scale lines through the adjusting part, and the liquid storage shell can be accurately adjusted to the corresponding volume even in a tilted state, thereby improving the accuracy of the stored drug amount and improving the convenience of use.

[0006] Furthermore, the liquid storage shell is made of a hard transparent material, and the top of the liquid storage shell is open and a cover body is screwed on it. The scale lines are arranged on the outer surface of the liquid storage shell so that the adjustment of the adjustment part can be observed through the scale lines so as to control the volume of the liquid storage cavity.

[0007] Furthermore, the adjusting portion includes a sealing plug which is sealingly and slidably arranged in the inner cavity of the liquid storage shell along the vertical direction, and a vertical rod which is fixedly connected to the sealing plug and moves through the top of the liquid storage shell along the vertical direction. The sealing plug, the vertical rod and the liquid storage shell are coaxially arranged, and the part of the inner cavity of the liquid storage shell located below the sealing plug is defined as the liquid storage cavity, and the part located above the sealing plug is defined as the movable cavity. The height of the vertical rod is greater than the height of the liquid storage shell, so as to achieve the purpose of adjusting the capacity of the liquid storage cavity by moving the vertical rod. The use of the sealing plug ensures the sealing of the liquid storage cavity and the precise control of the volume.

[0008] Furthermore, a head with a transverse dimension larger than that of the vertical rod is arranged on one end of the vertical rod passing through the liquid storage shell, so as to facilitate pushing the vertical rod.

[0009] Furthermore, a reinforcing sheet coaxially sleeved on the vertical rod is fixedly connected to the top surface of the sealing plug, and the reinforcing sheet is made of hard material so that the sealing plug can remain stable in the horizontal direction, reducing or even avoiding errors on the scale caused by tilt.

[0010] Furthermore, the liquid inlet pipe has a first liquid inlet end and a first liquid outlet end, the first liquid outlet end is sealed through the sealing plug and penetrates into the liquid storage cavity; the liquid outlet pipe has a second liquid inlet end and a second liquid outlet end, the second liquid inlet end is sealed through the sealing plug and penetrates into the liquid storage cavity, and the second liquid outlet end is connected to the pump body.

[0011] Furthermore, the first liquid outlet and the second liquid inlet are both connected to a cannula made of hard material, and the two cannula seals pass through the sealing plug and penetrate into the liquid storage cavity, so that the first liquid outlet and the second liquid inlet can move accordingly when the height position of the sealing plug is moved.

[0012] Furthermore, the two cannulas are moved vertically in sequence through the top of the liquid storage shell and the reinforcement sheet and sealably slide through the sealing plug to penetrate into the liquid storage cavity, so that the length of the cannulas penetrating into the liquid storage cavity can be adjusted as needed.

[0013] Furthermore, the first liquid inlet end is provided with an end cap which penetrates in the axial direction, and the inner wall of the end cap is provided with an internal thread so as to facilitate connection with an external container such as an infusion bag.

[0014] Furthermore, an end plug connected to the inner cavity of the liquid inlet tube is screwed on the end cap of the liquid inlet tube, and an injection needle connected to the inner cavity of the liquid inlet tube is coaxially arranged on the end of the end plug away from the end cap, and two extension arms are formed on the end of the end plug away from the end cap extending backwards along the radial direction of the end plug, so that the end plug can be connected to the end cap as needed and then the injection needle can be used to pierce the corresponding medicine container such as infusion bottle with rubber or silicone plug.

[0015] The utility model provides an infusion pump dosing device, which has at least the following beneficial effects: through the coordinated use of the liquid storage shell, the adjustment part and the scale lines, before the pump body is operated, the adjustment part can be adjusted in advance by observing the scale lines to adjust the capacity of the liquid storage chamber, and no matter what state it is in, it will not affect the capacity adjustment of the liquid storage chamber. After the medicine is input into the liquid storage chamber and filled, it is ensured that the amount of medicine can be accurately maintained at the adjusted capacity, and the required amount of medicine is accurately output through the coordination of the pump body and the liquid outlet tube, avoiding the input of excess medicine, thereby ensuring the safe use of the medicine. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a front cross-sectional view of the utility model;

[0019] Figure 3 It is an exploded view of the utility model.

[0020] The meanings of the symbols in the accompanying drawings are:

[0021] Liquid storage part-1; liquid storage shell-11; liquid storage cavity-111; movable cavity-112; cover body-113; first perforation-1131; third perforation-1132; scale line-114; adjustment part-12; sealing plug-121; second perforation-1211; vertical rod-122; head-1221; reinforcement sheet-123; fourth perforation-1231; liquid inlet pipe-13; first liquid inlet end-131; first liquid outlet end-132; end cap-133; end plug-134; injection needle-135; extension arm-136; liquid outlet pipe-14; second liquid inlet end-141; second liquid outlet end-142; cannula-1a; pump body-2. DETAILED DESCRIPTION

[0022] The utility model will be further described below in conjunction with the accompanying drawings.

[0023] like Figures 1 to 3 As shown, an infusion pump dosing device of the utility model includes a liquid storage part 1 and a pump body 2. The liquid storage part 1 is used to store a certain amount of medicine. The pump body 2 is connected to the liquid storage part 1 and is used to transport the medicine in the liquid storage part 1 to provide medication to the patient.

[0024] In this embodiment, the liquid storage part 1 includes a liquid storage shell 11 with a hollow interior, an adjusting part 12 movably arranged on the liquid storage shell 11 along the vertical direction, a liquid inlet pipe 13 arranged on the liquid storage shell 11, and a liquid outlet pipe 14 arranged on the liquid storage shell 11 and connected to the pump body 2. The liquid storage shell 11 is used to store medicine, and the adjusting part 12 divides the inner cavity of the liquid storage shell 11 into a sealed liquid storage cavity 111 and an active cavity 112 connected to the outside of the liquid storage shell 11. The active cavity 112 enables the adjusting part 12 to adjust the capacity of the liquid storage cavity 111. By limiting the capacity of the liquid storage cavity 111 in advance, it is avoided that too much or too little medicine is stored to cause unnecessary trouble. The liquid inlet pipe 13 is used to inject medicine into the liquid storage cavity 111, and the liquid outlet pipe 14 is used to connect to the pump body 2 so that the pump body 2 outputs the medicine, thereby completing the process of adding and preparing medicine.

[0025] In the content defined in this embodiment, the liquid storage shell 11 is made of a hard transparent material, such as glass, plastic, etc., so that the situation in the inner cavity of the liquid storage shell 11 can be clearly and intuitively seen; the liquid storage shell 11 is a cylindrical structure, and can also be other geometric structures. The top of the liquid storage shell 11 is open and extends upward in the vertical direction to form a connecting port in the shape of a circular tube. The diameter of the connecting port is smaller than the diameter of the liquid storage shell 11. An external thread is provided on the outer wall of the connecting port. A cover body 113 is provided at the connecting port. The cover body 113 is also a cylindrical structure and is hollow and open at the bottom. The outer diameter of the cover body 113 is consistent with the outer diameter of the liquid storage shell 11, and the inner diameter of the cover body 113 is consistent with the inner diameter of the connecting port. An internal thread is provided on the inner wall of the cover body 113, so that the top of the liquid storage shell 11 is screwed with the cover body 113, so as to facilitate the cleaning of the liquid storage shell 11. The liquid storage shell 11 is provided with scale lines 114, which are arranged on the outer surface of the liquid storage shell 11 to facilitate observation of scale changes in the liquid storage cavity 111, so that the adjustment part 12 can adjust the capacity of the liquid storage cavity 111 by observing the scale changes.

[0026] In the content defined in this embodiment, the regulating part 12 includes a sealing plug 121 sealed and slidably arranged in the inner cavity of the liquid storage shell 11 in the vertical direction, a vertical rod 122 fixedly connected to the sealing plug 121 and movable through the top of the liquid storage shell 11 in the vertical direction, and a reinforcing sheet 123 fixedly connected to the top surface of the sealing plug 121. The sealing plug 121 divides the inner cavity of the liquid storage shell 11 into two independent cavities from top to bottom, and defines the portion of the inner cavity of the liquid storage shell 11 below the sealing plug 121 as the liquid storage cavity 111. The portion of the inner cavity of the liquid storage shell 11 located above the sealing plug 121 is defined as a movable cavity 112. The movable cavity 112 provides space for the sealing plug 121 to move, so that the sealing plug 121 can adjust the capacity of the liquid storage cavity 111. The vertical rod 122 is convenient for medical staff to move the sealing plug 121. The reinforcing sheet 123 provides support for the flexible sealing plug 121 to prevent the sealing plug 121 from excessively deforming during movement and failing to seal the liquid storage cavity 111, thereby ensuring the capacity accuracy of the liquid storage cavity 111.

[0027] In this embodiment, the sealing plug 121 and the column are both cylindrical structures, and the sealing plug 121, the column 122 and the liquid storage shell 11 are coaxially arranged so that the column can act more evenly when driving the sealing plug 121 to move. The sealing plug 121 can be made of materials such as rubber or silicone, and the diameter of the sealing plug 121 is larger than the inner diameter of the liquid storage shell 11 and smaller than the outer diameter of the liquid storage shell 11, so that the sealing plug 121 can slide in the liquid storage cavity 111 along the vertical direction and block in the liquid storage shell 11, so that the liquid storage cavity 111 is called a sealed cavity. The bottom end of the vertical rod 122 is fixedly connected to the sealing plug 121, and the top end of the vertical rod 122 extends upward in the vertical direction. In order to facilitate the pushing of the sealing plug 121 by the vertical rod 122, a first through hole 1131 is provided on the cover body 113 at a position directly opposite to the vertical rod 122 in the vertical direction. The height of the vertical rod 122 is greater than the height of the liquid storage shell 11, and the top end of the vertical rod 122 passes through the first through hole 1131 to pass out of the liquid storage shell 11. In order to enable the sealing plug 121 to slide in the liquid storage shell 11 in the vertical direction, the diameter of the first through hole 1131 is greater than the diameter of the vertical rod 122, so that there is a gap between the vertical rod 122 and the first through hole 1131 after passing through the first through hole 1131, so that the vertical rod 122 can move through and pass out of the liquid storage shell 11, and the movable cavity 112 is connected to the outside of the liquid storage shell 11. The portion of the vertical rod 122 that is higher than the liquid storage shell 11 is always located outside the liquid storage shell 11, so that the sealing plug 121 can be driven to move from outside the liquid storage shell 11 by the vertical rod 122. In order to further facilitate the operation of the vertical rod 122, a head 1221 with a lateral dimension greater than that of the vertical rod 122 is provided on one end of the vertical rod 122 that passes through the liquid storage shell 11. The head 1221 is also cylindrical and is coaxially arranged with the vertical rod 122. The diameter of the head 1221 is greater than the diameter of the vertical rod 122, so that the vertical rod 122 can be grasped by the head 1221. A circle of anti-skid pads made of rubber can also be arranged on the outer side wall of the head 1221. In this embodiment, the reinforcing sheet 123 is annular in structure and is made of a hard material such as stainless steel. The inner diameter of the reinforcing sheet 123 is consistent with the inner diameter of the vertical rod 122 and is sleeved on the vertical rod 122 to be coaxially arranged with the vertical rod 122. The outer ring diameter of the reinforcing sheet 123 is smaller than the diameter of the sealing plug 121, and the difference between the outer ring diameter of the reinforcing sheet 123 and the diameter of the sealing plug 121 is within 5 mm. The bottom surface of the reinforcing sheet 123 is fixedly connected to the top surface of the sealing plug 121. Of course, the reinforcing sheet 123 can also be fixedly connected to the bottom surface of the sealing plug 121 to support the sealing plug 121 and prevent the sealing plug 121 from being greatly deformed due to the extrusion of the inner wall of the liquid storage shell 11 during movement. The reinforcing sheet 123 causes the seal of the sealing plug 121 located outside the reinforcing sheet 123 in the vertical direction to be deformed during extrusion and press against the inner wall of the liquid storage shell 11, thereby maintaining the seal.

[0028] In the present embodiment, the liquid inlet pipe 13 and the liquid outlet pipe 14 are both tubular structures with a hollow interior and through-connected ends. The liquid inlet pipe 13 has a first liquid inlet end 131 and a first liquid outlet end 132. The first liquid inlet end 131 is used to inject medicine, and the first liquid outlet end 132 moves through the movable cavity 112 and penetrates into the liquid storage cavity 111. The first liquid outlet end 132 is sealed with the sealing plug 121 so that the first liquid outlet end 132 seals through the sealing plug 121 to penetrate into the liquid storage cavity 111 to maintain the sealing of the liquid storage cavity 111; the liquid outlet pipe 14 has a second liquid inlet end 141 and a second liquid outlet end 142. The second liquid inlet end 141 moves through the movable cavity 112 and penetrates into the liquid storage cavity 111 to output the medicine in the liquid storage cavity 111, and the second liquid outlet end 142 is connected and communicated with the pump body 2 to transport the medicine in the liquid storage cavity 111 to the pump body 2. The second liquid inlet end 141 is sealed with the sealing plug 121, so that the second liquid inlet end 141 passes through the sealing plug 121 and enters the liquid storage cavity 111 to maintain the seal in the liquid storage cavity 111. The sealing plug 121 is provided with two second through holes 1211 in the vertical direction, and the first liquid outlet end 132 and the second liquid inlet end 141 pass through the two second through holes 1211 to enter the liquid storage cavity 111. The liquid inlet pipe 13 and the liquid outlet pipe 14 are both soft tubes, and the first liquid inlet end 131 and the second liquid outlet end 142 are both located outside the liquid storage shell 11, so that a portion of the liquid inlet pipe 13 and the liquid outlet pipe 14 are located in the active cavity 112. Since the sealing plug 121 will squeeze the active cavity 112 during the upward movement, this may cause the sealing plug 121 to cause the portions of the liquid inlet pipe 13 and the liquid outlet pipe 14 located in the active cavity 112 to be bent and blocked due to being squeezed during the movement. In order to avoid this problem, a plug 1a made of a hard material is connected to the first liquid outlet end 132 and the second liquid inlet end 141. The two plugs 1a seal through the sealing plug 121 and penetrate into the liquid storage cavity 111, and the diameters of the two plugs 1a are the same. Specifically, a third through hole 1132 is provided at a position on the cover body 113 that is vertically opposite to the two insertion tubes 1a, and the diameter of the third through hole 1132 is larger than the diameter of the insertion tube 1a, so that the insertion tube 1a can movably pass through the third through hole 1132. A fourth through hole 1231 is provided vertically opposite to the two second through holes 1211 on the reinforcing sheet 123, and the diameter of the fourth through hole 1231 is larger than the diameter of the insertion tube 1a, so that the insertion tube 1a can movably pass through the fourth through hole 1231 to movably pass through the reinforcing sheet 123. Both insertion tubes 1a can pass through the corresponding third through hole 1132, fourth through hole 1231 and second through hole 1211 in the vertical direction to penetrate into the liquid storage chamber 111.In order to ensure the sealing of the liquid storage chamber 111, the diameter of the second through hole 1211 is slightly smaller than the diameter of the insert tube 1a, that is, the difference between the diameter of the insert tube 1a and the diameter of the second through hole 1211 is about 2 mm, so that the two insert tubes 1a can slide through the top of the liquid storage shell 11 and the reinforcing sheet 123 in the vertical direction and then seal and slide through the sealing plug 121 to penetrate into the liquid storage chamber 111. It should be noted that the ends of the two insert tubes 1a can be flush with the bottom surface of the sealing plug 121 to avoid the existence of the insert tubes 1a affecting the accuracy of the volume in the liquid storage chamber 111; the length of the insert tubes 1a is greater than the length of the liquid storage shell 11, the insert tube 1a of the liquid inlet tube 13 is defined as the first liquid outlet end 132, and the insert tube 1a of the liquid outlet tube 14 is defined as the second liquid inlet end 141.

[0029] In the content defined in this embodiment, an end cap 133 penetrating along the axial direction is provided at the end of the first liquid inlet end 131. The end cap 133 is a cylindrical structure and is hollow inside. Both ends of the end cap 133 are penetrated. One end of the end cap 133 is fixedly connected to the first liquid inlet end 131. The inner and outer diameters of the end cap 133 are larger than the diameter of the first liquid inlet end 131. The inner wall of the end cap 133 is provided with an internal thread so that it can be directly connected to a container such as an infusion bag through the end cap 133 when necessary. Most infusion bags have an interface that can be connected to the end cap 133. In order to enable the first liquid inlet end 131 to be directly connected to some infusion bottles, an end plug 134 communicating with the inner cavity of the liquid inlet tube 13 is screwed on the end cap 133 of the liquid inlet tube 13. The end plug 134 is a cylindrical structure and both ends of the inner cavity are penetrated. The outer diameter of the end plug 134 is consistent with the inner diameter of the end cap 133, and an outer thread is provided on the outer wall of one end of the end plug 134 so that the end plug 134 can be threadedly connected with the end cap 133. An injection needle 135 connected to the inner cavity of the liquid inlet tube 13 is coaxially provided on the end of the end plug 134 away from the end cap 133, so that when it is necessary to directly connect with a container such as an infusion bottle, after the end plug 134 is connected to the end cap 133, the injection needle 135 can be passed through the sealing plug of the infusion bottle to absorb the medicine in the infusion bottle. In order to facilitate the threading of the end plug 134 on the end cap 133, two extension arms 136 are formed on the outer wall of the end of the end plug 134 away from the end cap 133 and extend in the radial direction of the end plug 134 in reverse direction. By pinching the two extension arms 136, the end plug 134 can be easily connected to the end cap 133.

[0030] In this embodiment, the pump body 2 has an input end and an output end. The input end of the pump body 2 is connected and communicated with the second liquid outlet end 142 of the liquid outlet tube 14, and the output end of the pump body 2 is connected according to the use needs of medical staff. The pump body 2 is an infusion pump, which is a prior art and will not be described in detail here.

[0031] One embodiment of an infusion pump dosing device of the utility model works as follows: first, according to actual use requirements, the sealing plug 121 is pushed by the head 1221 of the vertical rod 122 to move the sealing plug 121 to a suitable position according to the scale line 114 so that the volume of the liquid storage chamber 111 meets the requirements, and then the two cannulas 1a can be inserted into the liquid storage chamber 111 as needed, and the medicine can be sent into the liquid storage chamber 111 through the liquid inlet pipe 13 by external power, or the pump body 2 can be opened to form a negative pressure in the liquid storage chamber 111 to absorb the medicine, until the liquid storage chamber 111 is filled with the medicine, and the pump body 2 is started as needed, and the pump body 2 extracts the medicine in the liquid storage chamber 111. At this time, the liquid inlet pipe 13 provides air for the liquid storage chamber 111 so that the medicine is extracted by the liquid outlet pipe 14 and provided to the patient until the medication is completed.

Claims

1. An infusion pump dosing device, comprising a liquid storage portion and a pump body, characterized in that: The liquid storage part includes a liquid storage shell with a hollow interior, an adjusting part movably arranged on the liquid storage shell in a vertical direction, a liquid inlet pipe arranged on the liquid storage shell, and a liquid outlet pipe connected to the pump body arranged on the liquid storage shell. The adjusting part divides the inner cavity of the liquid storage shell into a sealed liquid storage cavity and a movable cavity connected to the outside of the liquid storage shell. The liquid inlet pipe and the liquid outlet pipe both movably pass through the movable cavity and penetrate into the liquid storage cavity. Scale lines are arranged on the liquid storage shell to facilitate observation of scale changes in the liquid storage cavity.

2. An infusion pump dosing device as claimed in claim 1, characterized in that: The liquid storage shell is made of a hard transparent material, and the top of the liquid storage shell is open and a cover body is screwed thereon, and the scale lines are arranged on the outer surface of the liquid storage shell.

3. The infusion pump dosing device according to claim 1, characterized in that: The adjusting part includes a sealing plug which is sealingly and slidably arranged in the inner cavity of the liquid storage shell in the vertical direction, and a vertical rod which is fixedly connected to the sealing plug and moves through the top of the liquid storage shell in the vertical direction. The sealing plug, the vertical rod and the liquid storage shell are coaxially arranged, and the part of the inner cavity of the liquid storage shell located below the sealing plug is defined as the liquid storage cavity, and the part located above the sealing plug is defined as the movable cavity. The height of the vertical rod is greater than the height of the liquid storage shell.

4. An infusion pump dosing device as claimed in claim 3, characterized in that: A head with a transverse dimension greater than that of the vertical rod is arranged on one end of the vertical rod passing through the liquid storage shell.

5. An infusion pump dosing device as claimed in claim 4, characterized in that: A reinforcing sheet coaxially sleeved on the vertical rod is fixedly connected to the top surface of the sealing plug, and the reinforcing sheet is made of hard material.

6. An infusion pump dosing device as claimed in claim 5, characterized in that: The liquid inlet pipe has a first liquid inlet end and a first liquid outlet end, the first liquid outlet end is sealed through the sealing plug and penetrates into the liquid storage cavity; the liquid outlet pipe has a second liquid inlet end and a second liquid outlet end, the second liquid inlet end is sealed through the sealing plug and penetrates into the liquid storage cavity, and the second liquid outlet end is connected to the pump body.

7. An infusion pump dosing device as claimed in claim 6, characterized in that: The first liquid outlet and the second liquid inlet are both connected with a cannula made of hard material, and the two cannula sealably pass through the sealing plug and penetrate into the liquid storage cavity.

8. An infusion pump dosing device as claimed in claim 7, characterized in that: The two inserting tubes are moved in turn along the vertical direction through the top of the liquid storage shell and the reinforcing sheet and seal-slide through the sealing plug to penetrate into the liquid storage cavity.

9. An infusion pump dosing device as claimed in claim 8, characterized in that: The first liquid inlet end is provided with an end cap which penetrates in the axial direction, and the inner wall of the end cap is provided with an internal thread.

10. An infusion pump dosing device as claimed in claim 9, characterized in that: An end plug connected to the inner cavity of the liquid inlet tube is screwed on the end cap of the liquid inlet tube, an injection needle connected to the inner cavity of the liquid inlet tube is coaxially arranged on the end of the end plug away from the end cap, and two extension arms are formed on the end of the end plug away from the end cap extending backwards along the radial direction of the end plug.

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