Liquid stopping structure and infusion pump

Abstract

The utility model provides an infusion pump which comprises a driving assembly and a liquid stopping structure, the liquid stopping structure is provided with an infusion tube, the liquid stopping structure comprises a mounting support, a liquid stopping assembly and a driving piece, and a movable groove is formed in the mounting support; the liquid stopping assembly is movably assembled in the movable groove and comprises a liquid stopping part and a first elastic part connected to one end of the liquid stopping part, the end, away from the liquid stopping part, of the first elastic part abuts against the inner wall of the movable groove, the liquid stopping assembly has a liquid stopping position and a retraction position, and the first elastic part is used for driving the liquid stopping assembly to move from the liquid stopping position to the retraction position; when the liquid stopping part is located at the liquid stopping position, the liquid stopping part abuts against the infusion tube to block the infusion tube, and when the liquid stopping part is located at the retracting position, the liquid stopping part is separated from the infusion tube to communicate the infusion tube. And the driving piece is movably assembled on the mounting bracket, has a moving direction close to or far away from the liquid stopping piece, and is used for driving the liquid stopping piece to move from the retraction position to the liquid stopping position. And the convenience and the use efficiency of the liquid stopping structure are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of infusion devices, and particularly relates to a liquid stopping structure and an infusion pump. Background Art

[0002] In the current clinical medical field, the traditional manual infusion method has been broken through, and an automatic infusion device mainly composed of an infusion pump is used to achieve automatic infusion. During the actual operation process, medical staff need to control the infusion volume. Therefore, in related technologies, a liquid stopping clip mechanism is built into the infusion pump to achieve safe infusion.

[0003] In the liquid stopping clip mechanism of the infusion pump in related technologies, a spring is usually used to pull or push against the liquid stopping clip, so that the liquid stopping clip clamps the infusion tube to achieve the liquid stopping effect. When using the liquid stopping clip for infusion, it is necessary to continuously pull the liquid stopping clip by hand alone. It is difficult for the liquid stopping clip to maintain the state of pressing or releasing the infusion tube, the operation is complex, and the actual use efficiency is low. Summary of the Utility Model

[0004] The technical purpose of the utility model is to provide a liquid stopping structure and an infusion pump, aiming to solve the problems that the liquid stopping structure of the infusion pump needs to be manually controlled and has low use efficiency.

[0005] To solve the above technical problems, the utility model is realized as follows. A liquid stopping structure for assembling an infusion tube includes:

[0006] An installation bracket with a movable groove provided therein;

[0007] A liquid stopping assembly movably assembled in the movable groove. The liquid stopping assembly includes a liquid stopping member and a first elastic member connected to one end of the liquid stopping member. The end of the first elastic member away from the liquid stopping member abuts against the inner wall of the movable groove. The liquid stopping assembly has a liquid stopping position and a retracted position. When the liquid stopping member is in the liquid stopping position, the liquid stopping member is far away from the notch of the movable groove, and the liquid stopping member abuts against the infusion tube. When the liquid stopping member is in the retracted position, the liquid stopping member is close to the notch of the movable groove, and the liquid stopping member disengages from the infusion tube. The first elastic member is used to drive the liquid stopping assembly from the liquid stopping position to the retracted position;

[0008] A driving member movably assembled on the installation bracket. The driving member has a movement direction of approaching or departing from the liquid stopping member, and the driving member is used to drive the liquid stopping member from the retracted position to the liquid stopping position.

[0009] In some embodiments of the utility model, the liquid-stopping component is arranged between the infusion tube and the driving member, and the liquid-stopping member includes a movable part and a stop top portion which are transmission-connected, the movable part abuts and cooperates with the driving member, and the stop top portion abuts and cooperates with the infusion tube, and when the driving member abuts against the movable part, the stop top portion is in the liquid-stopping position, and the stop top portion abuts against the infusion tube.

[0010] In some embodiments of the utility model, the movable part includes a shell, a second elastic member and a top member, an installation cavity is provided in the shell, the top member and the second elastic member are provided in the installation cavity, the abutting top member is provided on the outer peripheral side of the shell and is transmission-connected to the top member, one end of the second elastic member is connected to the top member, and the other end abuts against the cavity wall of the installation cavity, and the top member is exposed in the installation cavity.

[0011] In some embodiments of the utility model, a first inclined surface and a top surface connected to the first inclined surface are provided on one side of the top, a first abutting inclined surface and an abutting plane connected to the first abutting inclined surface are provided on one end of the driving member close to the top, when the driving member moves in a direction close to the top, the first abutting inclined surface abuts against the first inclined surface, and when the liquid-stopping member is in the liquid-stopping position, the top surface abuts against the abutting plane.

[0012] In some embodiments of the utility model, a second inclined surface is provided on the side of the top away from the first inclined surface, and the two ends of the top surface are respectively connected to the first inclined surface and the second inclined surface, and the driving member is provided with the second abutting inclined surface away from the first abutting inclined surface and connected to the abutting plane, and when the driving member moves away from the top, the second abutting inclined surface abuts against the second inclined surface.

[0013] In some embodiments of the utility model, a first connecting column is protruding from the cavity wall of the installation cavity, a second connecting column is protruding from the side of the top connected to the second elastic member, and both ends of the second elastic member are respectively inserted into the first connecting column and the second connecting column.

[0014] In some embodiments of the present invention, the mounting bracket includes a first bracket and a second bracket that are detachably connected, and the first bracket and the second bracket enclose the movable groove.

[0015] The utility model also provides an infusion pump, comprising a driving component and the liquid-stopping structure as described above, wherein the driving component comprises a motor drivingly connected to the driving member, and the motor is used to drive the driving member to approach or move away from the liquid-stopping member.

[0016] In some embodiments of the present utility model, a through-connected groove is provided inside the infusion pump, and the infusion tube is arranged inside the connected groove. When the liquid stop member is in the liquid stop position, a part of the liquid stop member extends into the connected groove, and the liquid stop member and the groove wall of the connected groove clamp the infusion tube.

[0017] In some embodiments of the present utility model, the driving assembly includes a sensor electrically connected to the motor. The sensor is arranged inside the connected groove. When the infusion tube is placed inside the connected groove, the sensor controls the motor to start.

[0018] Compared with the prior art, the beneficial effects of the liquid stop structure and the infusion pump in the present utility model are as follows:

[0019] The present utility model provides an infusion pump, which includes a driving assembly and a liquid stop structure. The liquid stop structure is equipped with an infusion tube. The liquid stop structure includes a mounting bracket, a liquid stop assembly, and a driving member. An activity groove is provided inside the mounting bracket; the liquid stop assembly is movably assembled inside the activity groove. The liquid stop assembly includes a liquid stop member and a first elastic member connected to one end of the liquid stop member. The end of the first elastic member away from the liquid stop member abuts against the inner wall of the activity groove. The liquid stop assembly has a liquid stop position and a retracted position. The first elastic member is used to drive the liquid stop assembly from the liquid stop position to the retracted position. When the liquid stop member is in the liquid stop position, the liquid stop member abuts against the infusion tube to block the infusion tube. When the liquid stop member is in the retracted position, the liquid stop member is separated from the infusion tube to connect the infusion tube; the driving member is movably assembled on the mounting bracket. The driving member has a movement direction of approaching or departing from the liquid stop member. The driving member is used to drive the liquid stop member from the retracted position to the liquid stop position. After the infusion tube is assembled, when it is necessary to perform a liquid stop operation on the infusion tube, the driving member moves closer to the liquid stop member, driving the liquid stop member from the retracted position to the liquid stop position. The first elastic member is compressed, and the liquid stop member presses the infusion tube, thereby cutting off the liquid flow inside the infusion tube. When it is necessary to release the infusion tube, the driving member moves away from the liquid stop member, and the driving member releases the control of the liquid stop member. The compressed first elastic member releases elastic potential energy to drive the liquid stop member from the liquid stop position to the retracted position. The liquid stop member releases the pressing on the infusion tube, and the liquid inside the infusion tube resumes flowing. With such a setting, effective control of the infusion tube can be achieved, without the need for manual continuous operation of the liquid stop member, eliminating ineffective operations and improving the convenience and use efficiency of the liquid stop structure. Description of the Drawings

[0020] Figure 1 is the overall structural schematic diagram of the liquid stop structure (excluding the driving member) in an embodiment of the present utility model;

[0021] Figure 2 is Figure 1 the internal structural schematic diagram of the liquid stop structure;

[0022] Figure 3 isFigure 1 Schematic structural diagram of the stop fluid structure and the stop fluid component;

[0023] Figure 4 is Figure 1 Cross-sectional schematic diagram of the stop fluid structure and the stop fluid component;

[0024] Figure 5 Schematic structural diagram of the driving component of the stop fluid structure in an embodiment of the present utility model;

[0025] Figure 6 Schematic structural diagram of the stop fluid component of the infusion pump in a retracted position in an embodiment of the present utility model;

[0026] Figure 7 Schematic structural diagram of the stop fluid component of the infusion pump in a stop fluid position in an embodiment of the present utility model;

[0027] Figure 8 Cross-sectional schematic diagram of the stop fluid component of the infusion pump in a retracted position in an embodiment of the present utility model;

[0028] Figure 9 Cross-sectional schematic diagram of the stop fluid component of the infusion pump in a stop fluid position in an embodiment of the present utility model;

[0029] Figure 10 Schematic structural diagram of the stop fluid component of the infusion pump in a retracted position in another embodiment of the present utility model.

[0030] In the drawings, each reference numeral represents:

[0031] 1000, infusion pump; 100, stop fluid structure; 11, mounting bracket; 111, first bracket; 112, second bracket; 113, movable groove; 115, limiting portion; 116, sliding hole; 12, stop fluid assembly; 121, stop fluid component; 1211, ejector; 1212, first inclined surface; 1213, top surface; 1214, second inclined surface; 1215, second elastic member; 1216, mounting cavity; 1217, abutting portion; 1218, first connecting column; 1219, second connecting column; 122, first elastic member; 13, driving component; 131, first abutting inclined surface; 132, second abutting inclined surface; 133, abutting plane; 200, communication groove. Detailed implementation manners

[0032] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0033] In the description of the present utility model, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "circumferential", "radial", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

[0034] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality" means two or more unless otherwise specifically defined.

[0035] Please refer to Figure 1 and Figure 2 with Figure 8 and Figure 9The utility model proposes an infusion pump 1000. The infusion pump 1000 includes a driving assembly and a liquid-stopping structure 100. The driving assembly includes a motor that is transmission-connected to a driving member 13. The motor is used to drive the driving member 13 to move closer to or away from a liquid-stopping member 121. The liquid-stopping structure 100 is used to assemble an infusion tube (not shown in the figure). The liquid-stopping structure 100 includes a mounting bracket 11, a liquid-stopping assembly 12 and a driving member 13. A movable groove 113 is provided in the mounting bracket 11. The liquid-stopping assembly 12 is movably assembled in the movable groove 113. The liquid-stopping assembly 12 includes a liquid-stopping member 121 and a first elastic member 122 connected to one end of the liquid-stopping member 121. One end of the first elastic member 122 away from the liquid-stopping member 121 abuts against the inner wall of the movable groove 113. The liquid-stopping assembly 12 has a liquid-stopping position and a retracted position. The liquid-stopping member 121 is in a stop position. When the liquid stop member 121 is in the liquid position, the notch of the movable groove 113 is set far away from each other, and the liquid stop member 121 presses against the infusion tube. When the liquid stop member 121 is in the retracted position, the notch of the liquid stop member 121 and the movable groove 113 are set close to each other, and the liquid stop member 121 is separated from the infusion tube. The first elastic member 122 is used to drive the liquid stop assembly 12 from the liquid stop position to the retracted position; the driving member 13 is movably assembled on the mounting bracket 11, and the driving member 13 has a movement direction approaching or moving away from the liquid stop member 121. The driving member 13 is used to drive the liquid stop member 121 from the retracted position to the liquid stop position.

[0036] The infusion tube is connected to an external functional device, such as a liquid storage tank for providing a liquid source or a syringe for injecting liquid. The infusion tube is assembled in the liquid stopping structure 100. The infusion tube can be a hose, which is deformed with the pressure of the liquid stopping part 121. After the two sides of the infusion tube are deformed, the pipeline is blocked, thereby preventing the flow of liquid in the infusion tube.

[0037] In this embodiment, the initial position of the liquid-stopping member 121 in the liquid-stopping structure 100 is the retracted position, at which time the first elastic member 122 is at its original length. After the infusion tube is assembled, when the infusion tube needs to be operated to stop the liquid, the driving member 13 moves close to the liquid-stopping member 121, drives the liquid-stopping member 121 from the retracted position to the liquid-stopping position, the first elastic member 122 is compressed, and the liquid-stopping member 121 presses the infusion tube, thereby cutting off the flow of liquid in the infusion tube. When the infusion tube needs to be released, the driving member 13 moves away from the liquid-stopping member 121, the driving member 13 releases the control of the liquid-stopping member 121, the compressed first elastic member 122 obtains the released elastic potential energy to drive the liquid-stopping member 121 from the liquid-stopping position to the retracted position, the liquid-stopping member 121 releases the pressure on the infusion tube, and the liquid in the infusion tube resumes flowing. Such a configuration can achieve effective control of the infusion tube without the need for manual continuous operation of the liquid-stopping member 121 , thereby eliminating invalid operations and improving the convenience and use efficiency of the liquid-stopping structure 100 .

[0038] In this embodiment, the driving member 13 can be controlled by a motor. A wireless controller or a control switch can be provided inside the motor. By remotely turning on the wireless control or pressing the control switch by the user, the control of the driving member 13 approaching or departing from the liquid stopping member 121 is realized. For a specific control method, for example, the driving member 13 is controlled according to a specific time period, and the driving member 13 drives the liquid stopping member 121 from the retracted position to the liquid stopping position according to a specific cycle, so as to realize the periodic control of the liquid stopping member 121 and perform programmed control.

[0039] For the convenience of installing the infusion tube, please refer to Figure 6 and Figure 7 , a through-connected groove 200 is provided in the infusion pump 1000. An infusion tube is provided in the connected groove 200. When the liquid stopping member 121 is in the liquid stopping position, a part of the liquid stopping member 121 extends into the connected groove 200, and the liquid stopping member 121 and the groove wall of the connected groove 200 clamp the infusion tube. One side of the infusion tube abuts against the groove wall of the connected groove 200, and the other side cooperates with the liquid stopping member 121. The two sides clamp the infusion tube, which is beneficial to improving the liquid stopping effect of the liquid stopping member 121. The extending direction of the connected groove 200 and the extending direction of the movable groove 113 can have an angle. Preferably, the included angle between the two can be a right angle.

[0040] Furthermore, the liquid stopping assembly 12 is provided between the infusion tube and the driving member 13. The liquid stopping member 121 includes a movable part and an abutting part 1217 that are connected in transmission. The movable part abuts and cooperates with the driving member 13, and the abutting part 1217 abuts and cooperates with the infusion tube. When the driving member 13 abuts against the movable part, the abutting part 1217 of the liquid stopping member 121 is in the liquid stopping position, and the abutting part 1217 and the groove wall of the connected groove 200 clamp the infusion tube. The driving member 13 is used to drive the movable part, and the movable part moves towards the infusion tube, compressing the first elastic member 122. The movement of the movable part drives the abutting part 1217 to move. The abutting part 1217 has a retracted position and a liquid stopping position, and the abutting part 1217 is driven by the driving member 13 to reach the liquid stopping position from the retracted position.

[0041] In one embodiment, a through hole for the abutting part 1217 to protrude can be opened at the bottom of the movable groove 113. When the abutting part 1217 protrudes through the through hole, it can abut against the infusion tube. The first elastic member 122 is installed at the bottom of the groove avoiding the through hole. The circumferential side of the abutting part 1217 compresses the first elastic member 122, and the first elastic member 122 realizes the return of the abutting part 1217 from the liquid stopping position to the retracted position.

[0042] Please refer to Figure 3 and Figure 4, in this embodiment, the movable part includes a housing, a second elastic member 1215 and a stopper 1211. An installation cavity 1216 is provided in the housing. The stopper 1211 and the second elastic member 1215 are arranged in the installation cavity 1216. An abutting portion 1217 is provided on the outer peripheral side of the housing and is in transmission connection with the stopper 1211. One end of the second elastic member 1215 is connected to the stopper 1211, and the other end abuts against the cavity wall of the installation cavity 1216. The stopper 1211 is exposed from the installation cavity 1216. The cooperation of the stopper 1211 and the second elastic member 1215 is used to adapt to infusion tubes of different thicknesses. The thickness of the thicker infusion tube is also larger after being pressed by the abutting portion 1217. At this time, the driving member 13 continuously presses the stopper 1211, and the second elastic member 1215 can be compressed to shorten the overall length of the liquid stop member 121, leaving a suitable area to adapt to the thicker infusion tube. When the thickness of the infusion tube is normal, the second elastic member 1215 does not need to be compressed or is compressed to a small extent to maintain the length of the liquid stop member 121 and also leave a suitable area.

[0043] Specifically, a first connecting column 1218 protrudes from the cavity wall of the installation cavity 1216, a second connecting column 1219 protrudes from the side of the stopper 1211 where the second elastic member 1215 is connected, and both ends of the second elastic member 1215 are respectively inserted into the first connecting column 1218 and the second connecting column 1219. The first connecting column 1218 and the second connecting column 1219 stabilize the position of the second elastic member 1215, and the second elastic member 1215 will not shift in the installation cavity 1216.

[0044] Please refer to Figure 5, for the convenience of the cooperation between the stopper 1211 and the driving member 13, one side of the stopper 1211 is provided with a first inclined surface 1212 and a top surface 1213 connected to the first inclined surface 1212. One end of the driving member 13 close to the notch of the movable groove 113 is provided with a first abutting inclined surface 131 and an abutting plane 133 connected to the first abutting inclined surface 131. When the driving member 13 moves in the direction close to the stopper 1211, the first abutting inclined surface 131 abuts against the first inclined surface 1212. When the abutting part 1217 is in the liquid stopping position, the top surface 1213 is in contact with the abutting plane 133. The extending direction of the top surface 1213 is the extending direction of the infusion tube, which can be a horizontal plane. There is an included angle between the first inclined surface 1212 and the top surface 1213. The extending direction of the abutting plane 133 is also the same as the extending direction of the infusion tube. There is an included angle between the first abutting inclined surface 131 and the abutting plane 133. The inclined directions of the first abutting inclined surface 131 and the first inclined surface 1212 are the same, but the positions of the top surface 1213 and the abutting plane 133 are arranged oppositely. That is, when the first abutting inclined surface 131 and the first inclined surface 1212 are in contact, the inclined surfaces are convenient for contact and introduction. As the two gradually come into contact and are introduced, the top surface 1213 is displaced to be in contact with the abutting plane 133, thereby driving the stopper 1211 to compress the first elastic member 122, and the abutting part 1217 reaches the liquid stopping position to press the infusion tube.

[0045] Further, please refer to Figure 10 , a second inclined surface 1214 is provided on the side of the stopper 1211 away from the first inclined surface 1212. The two ends of the top surface 1213 are respectively connected to the first inclined surface 1212 and the second inclined surface 1214. The driving member 13 is provided with a second abutting inclined surface 132 that is away from the first abutting inclined surface 131 and is connected to the abutting plane 133. When the driving member 13 moves in the direction away from the stopper 1211, the second abutting inclined surface 132 abuts against the second inclined surface 1214. When the top surface 1213 of the stopper 1211 is in contact with the extending plane of the driving member 13, the abutting part 1217 is in the retracted position. The second abutting inclined surface 132 provided on the driving member 13 makes there be a height difference between the abutting plane 133 and the extending plane of the driving member 13. The extending plane of the driving member 13 refers to the upper surface of the driving member and the plane parallel to the abutting plane 133.

[0046] To improve the transmission accuracy between the top 1211 and the driving member 13 and prevent the driving member 13 from detaching from the top 1211, when the abutting portion 1217 needs to move from the liquid stop position to the retraction position, the second abutting inclined surface 132 of the driving member 13 can continuously move away from the top 1211, so that the top surface 1213 of the top 1211 is in contact with the extension plane of the driving member 13. Then, while the top 1211 always remains in contact with the driving member 13, the transmission control of the abutting portion 1217 is achieved. When the abutting portion 1217 needs to move from the retraction position to the liquid stop position, the second abutting inclined surface 132 of the driving member 13 can move towards the top 1211, and the second abutting inclined surface 132 abuts against the second inclined surface 1214 of the top 1211, facilitating the driving member 13 to move to the position where the abutting plane 133 is in contact with the top surface 1213. Adding the second abutting inclined surface 132 effectively increases the length of the cooperation area between the driving member 13 and the top 1211. Controlling the forward and backward movement of the driving member 13 requires the motor to rotate in forward and reverse directions. The increase in the length of the cooperation area between the driving member 13 and the top 1211 also increases the rotation cycle of the motor in forward and reverse directions. With a longer cycle, the control accuracy of the motor is improved.

[0047] The mounting bracket 11 includes a first bracket 111 and a second bracket 112 that are detachably connected, and the first bracket 111 and the second bracket 112 enclose to form a movable groove 113. The form of the detachable mounting bracket 11 is conducive to the maintenance of the interior of the liquid stop assembly 12.

[0048] In this embodiment, the driving assembly includes a sensor electrically connected to the motor. The sensor is disposed in the communication groove 200. When an infusion tube is placed in the communication groove 200, the sensor controls the motor to start. The sensor can be a radar module, a laser module, etc. When the infusion tube enters the communication groove 200, the sensor transmits a signal to the motor, and the motor starts to drive the driving member 13 to move towards the top 1211, and the first abutting inclined surface 131 of the driving member 13 contacts the first inclined surface 1212 of the top 1211. The sensor can also include the function of detecting the height change of the driving member 13 in the vertical direction. As the first abutting inclined surface 131 and the first inclined surface 1212 continuously contact, the height of the top 1211 in the vertical direction continuously changes. When the driving member 13 moves to the position where the abutting plane 133 is in contact with the top surface 1213 of the top 1211, the height of the top 1211 in the vertical direction stops changing, and the sensor transmits a stop signal, causing the motor to stop rotating. At this time, the abutting portion 1217 moves from the retraction position to the liquid stop position, compresses the infusion tube, and cuts off the liquid flow in the infusion tube.

[0049] The driving assembly further includes a control switch, which is electrically connected to the motor and the sensor. The control switch controls the motor to continue rotating, so that the second abutting inclined surface 132 of the driving member 13 contacts the second inclined surface 1214 of the ejector 1211 until the extended plane of the driving member 13 abuts against the top surface 1213 of the ejector 1211, and the height of the ejector 1211 in the vertical direction no longer changes. The sensor transmits a signal to stop the motor again, thereby realizing the release of the pressing of the infusion tube by the abutting portion 1217.

[0050] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A liquid stop structure for assembling an infusion tube, characterized in that, include: A mounting bracket with a movable slot therein; A liquid-stopping component is movably assembled in the movable groove, the liquid-stopping component comprises a liquid-stopping member and a first elastic member connected to one end of the liquid-stopping member, one end of the first elastic member away from the liquid-stopping member abuts against the inner wall of the movable groove, the liquid-stopping component has a liquid-stopping position and a retracted position, when the liquid-stopping member is in the liquid-stopping position, the liquid-stopping member is arranged away from the notch of the movable groove, and the liquid-stopping member abuts against the infusion tube, when the liquid-stopping member is in the retracted position, the liquid-stopping member is arranged close to the notch of the movable groove, and the liquid-stopping member is separated from the infusion tube, and the first elastic member is used to drive the liquid-stopping component from the liquid-stopping position to the retracted position; A driving member is movably assembled on the mounting bracket, the driving member has a movement direction approaching or moving away from the liquid-stopping member, and the driving member is used to drive the liquid-stopping member from the retracted position to the liquid-stopping position.

2. The liquid stop structure according to claim 1, characterized in that, The liquid-stopping component is arranged between the infusion tube and the driving member, and the liquid-stopping member includes a movable part and a stopper part which are transmission-connected, the movable part abuts and cooperates with the driving member, and the stopper part abuts and cooperates with the infusion tube, when the driving member abuts against the movable part, the stopper part is in the liquid-stopping position, and the stopper part abuts against the infusion tube.

3. The liquid stop structure according to claim 2, wherein The movable part includes a shell, a second elastic member and a top member. A mounting cavity is provided in the shell. The top member and the second elastic member are provided in the mounting cavity. The abutting top member is provided on the outer peripheral side of the shell and is transmission-connected to the top member. One end of the second elastic member is connected to the top member, and the other end abuts against the cavity wall of the mounting cavity. The top member is exposed in the mounting cavity.

4. The liquid stop structure according to claim 3, characterized in that, A first inclined surface and a top surface connected to the first inclined surface are provided on one side of the top, and a first abutting inclined surface and an abutting plane connected to the first abutting inclined surface are provided on one end of the driving member close to the top. When the driving member moves in a direction close to the top, the first abutting inclined surface abuts against the first inclined surface, and when the liquid-stopping member is in the liquid-stopping position, the top surface abuts against the abutting plane.

5. The liquid stop structure according to claim 4, characterized in that, A second inclined surface is provided on the side of the top away from the first inclined surface, and the two ends of the top surface are respectively connected to the first inclined surface and the second inclined surface. The driving member is provided with the second abutting inclined surface away from the first abutting inclined surface and connected to the abutting plane. When the driving member moves away from the top, the second abutting inclined surface abuts against the second inclined surface.

6. The liquid stop structure according to claim 2, wherein, A first connecting column is protruding from the cavity wall of the installation cavity, a second connecting column is protruding from one side of the top connected to the second elastic member, and two ends of the second elastic member are respectively plugged into the first connecting column and the second connecting column.

7. The liquid stop structure according to claim 1, wherein The mounting bracket includes a first bracket and a second bracket that are detachably connected, and the first bracket and the second bracket are combined to form the movable groove.

8. An infusion pump, characterized in that, It comprises a driving component and the liquid-stopping structure according to any one of claims 1 to 7, wherein the driving component comprises a motor drivingly connected to the driving member, and the motor is used to drive the driving member to approach or move away from the liquid-stopping member.

9. The infusion pump according to claim 8, wherein A communication groove is provided in the infusion pump in a penetrating manner, and the infusion tube is provided in the communication groove. When the liquid stop member is in the liquid stop position, a part of the liquid stop member extends into the communication groove, and the liquid stop member and the groove wall of the communication groove clamp the infusion tube.

10. The infusion pump according to claim 8, characterized in that, The driving assembly includes a sensor electrically connected to the motor. The sensor is provided in the communication groove. When the infusion tube is placed in the communication groove, the sensor controls the motor to start.

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