CN218652649U - Liquid stopping clamp structure and infusion pump - Google Patents

Abstract

An embodiment of the utility model provides a end liquid and press from both sides structure and transfer pump relates to the transfer pump field. The problem that the pump door is easily stressed due to the fact that the liquid stopping clamp is opened after the pump door is closed is solved. The liquid stopping clamp structure comprises a liquid stopping cover, a liquid stopping wrench, a sliding block, a first spring and a second spring; the liquid stopping wrench is arranged in the liquid stopping cover in a swinging mode through a first spring; the sliding block is slidably arranged in the liquid stopping cover through a second spring; the liquid stopping wrench swings to a first position and compresses the liquid stopping of the infusion tube in the channel; or the liquid stopping wrench swings to the second position and abuts against the sliding block to give way; or the liquid stopping wrench is abutted against the pump door in the state that the pump door is closed, so that the infusion tube in the channel is opened; or the liquid stop wrench is reset to the first position in a state that the pump door is opened. The infusion pump comprises a liquid stopping clip structure. Several states of the liquid stopping wrench are realized by matching the sliding block with the pump door, the structure is simplified, and the force born by the pump door can be greatly reduced after the pump door is closed.

Description

Liquid stopping clamp structure and infusion pump

Technical Field

The utility model relates to an transfer pump field particularly, relates to a end liquid and press from both sides structure and transfer pump.

Background

The liquid stop mechanism is an important pause function component when the infusion pump is used. In actual use, the pump door limit controls the opening of the liquid stopping clamp. When the infusion tube is placed in the open door, the infusion tube needs to be manually pulled to open the tube.

When the existing liquid stopping clamp is closed by the pump door, the opening of the liquid stopping clamp is controlled by the limiting of the pump door, so that the relative position of the pump door can bear an outward force, the door can be inclined, errors of other functions can be caused, such as pressure detection, and the integral appearance of a product can be influenced by probability.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a stop liquid and press from both sides structure, it can improve the pump door and close the back and end opening of liquid clamp and easily make the great problem of pump door atress.

The utility model discloses a purpose still includes, provides an infusion pump, and it can improve the pump door and close the big problem of opening of easy messenger pump door atress of back end liquid clamp.

The embodiment of the utility model discloses a can realize like this:

the embodiment of the utility model provides a liquid stopping clamp structure for installing in the transfer pump, the transfer pump includes pump stand and pump door, the pump stand is provided with the passageway that is used for installing the transfer line, liquid stopping clamp structure includes liquid stopping cover, liquid stopping spanner, slider, first spring and second spring;

the liquid stopping cover is arranged in the pump seat and is positioned on one side of the channel; the liquid stopping wrench is arranged in the liquid stopping cover in a swinging mode through the first spring; the sliding block is slidably arranged in the liquid stopping cover through the second spring;

the liquid stopping wrench is used for swinging to a first position under the action of the first spring and pressing and stopping the liquid of the infusion tube in the channel; or the liquid stopping wrench is used for swinging to a second position under the action of external force and abutting against the sliding block so as to give way to the channel; or the liquid stopping wrench is used for abutting against the pump door in a state that the pump door is closed so as to swing to a third position and be separated from the sliding block, so that the infusion tube in the channel is opened; or the liquid stop wrench is used for resetting to the first position when the pump door is opened.

In addition, the utility model discloses a liquid-stopping clamp structure that embodiment provided can also have following additional technical characterstic:

optionally, the liquid stopping wrench has a first abutting portion, and the slider has a second abutting portion; the first butting part is in sliding fit with the second butting part so as to switch between a first butting position and a second butting position;

when the liquid stop wrench swings to the first position, the first abutting part abuts against the second abutting part at the first abutting position to prevent the sliding block from popping up; when the liquid stop wrench swings to the second position, the second abutting part abuts against the first abutting part at the second abutting position so as to prevent the liquid stop wrench from swinging to the first position; the liquid stopping wrench and the sliding block are simultaneously abutted against the pump door in a state that the pump door is closed, so that the first abutting part is separated from the second abutting part; the first abutting portion is used for resetting to the first abutting position in a state that the pump door is opened so as to abut against the second abutting portion.

Optionally, the first abutting portion has a first abutting surface and a first arc surface arranged at an included angle; the second abutting part is provided with a second abutting surface and a second cambered surface which are arranged at an included angle; the first abutting surface is in sliding fit with the second abutting surface, and the first cambered surface is in sliding fit with the second cambered surface;

the first cambered surface is used for abutting against the second cambered surface at the first abutting position; the second cambered surface is used for guiding the first cambered surface to move to the first abutting position when the pump door is opened; the first abutting surface is used for abutting against the second abutting surface at the second abutting position.

Optionally, the liquid stop wrench has a liquid stop portion and a wrenching portion; the liquid stopping part and the pulling part are both arranged at the opening of the liquid stopping cover; the liquid stopping part is used for compressing and stopping liquid for the infusion tube under the condition that the liquid stopping wrench swings to the first position; the wrenching part is used for wrenching under the action of external force so as to enable the liquid stopping wrench to swing to the second position.

Optionally, the liquid stop wrench further has a swing portion; the swing part is provided with two ends with opposite positions, and one end of the swing part is connected in the liquid stopping cover in a swing mode through the first spring; the liquid stopping part and the pulling part are connected to the other end of the swinging part together.

Optionally, a U-shaped gap is formed between the liquid stopping portion and the pulling portion.

Optionally, the first abutting portion is disposed between the pulling portion and the swinging portion.

Optionally, the sliding blocks are arranged side by side on one side of the liquid stop wrench.

Optionally, a guide groove is formed in the liquid stop cover, the slider is slidably disposed in the guide groove through the second spring, and the guide groove is used for guiding the second abutting portion of the slider to slide between the first abutting position and the second abutting position.

The embodiment of the utility model also provides an infusion pump. The infusion pump comprises a pump seat, a pump door, an infusion tube and a liquid stopping clamp structure; the pump door is rotatably connected to the pump base, and the pump base is provided with a channel for installing the infusion tube.

The utility model discloses end beneficial effect that liquid presss from both sides structure and transfer pump includes, for example:

the liquid stopping clamp structure comprises a liquid stopping cover, a liquid stopping wrench, a sliding block, a first spring and a second spring; the liquid stopping cover is arranged in the pump seat and is positioned on one side of the channel; the liquid stopping wrench is arranged in the liquid stopping cover in a swinging mode through a first spring; the sliding block is slidably arranged in the liquid stopping cover through a second spring; the liquid stopping wrench is used for swinging to a first position under the action of the first spring and pressing and stopping the liquid of the infusion tube in the channel; or the liquid stopping wrench is used for swinging to a second position under the action of external force and abutting against the sliding block so as to give way to the channel; or the liquid stopping wrench is used for abutting against the pump door in a closed state of the pump door to swing to the third position and separate from the sliding block, so that the infusion tube in the channel is opened; or the liquid stop wrench is used for resetting to the first position in a state that the pump door is opened.

When the hydraulic wrench is used, the hydraulic wrench is wrenched from the first position to the second position by hand, and then the slide block supports the hydraulic wrench to fix the hydraulic wrench in an open state; then the infusion tube is put into the channel, then the door is closed, when the pump door is closed, the pump door props against the liquid stopping wrench, the liquid stopping wrench is made to swing from the second position to the third position, the infusion tube is in an open state, and the liquid stopping wrench is separated from the sliding block at the moment; after the pump door is opened, the liquid stopping wrench is reset to the first position to compress the liquid stopping of the infusion tube. The whole state of the liquid stopping wrench is realized by the matching of the sliding block and the pump cover, the position of the liquid stopping wrench is mainly controlled by the sliding block, the force born by the pump door can be greatly reduced under the closing state of the pump door, and the problem that the stress of the pump door is large due to the fact that the liquid stopping clamp is opened after the pump door is closed is well improved.

The infusion pump comprises the liquid stopping clamp structure, and the problem that the stress of the pump door is large due to the fact that the liquid stopping clamp is opened after the pump door is closed can be solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a liquid stopping clip structure provided in an infusion pump according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a liquid stopping clip structure provided in an embodiment of the present invention;

fig. 3 is an exploded view of a liquid stopping clip structure provided in an embodiment of the present invention;

fig. 4 is a partial cross-sectional view of a liquid stopping wrench located at a second position in a liquid stopping clip structure provided by an embodiment of the present invention.

An icon: 10-an infusion pump; 11-a pump mount; 12-a channel; 13-a pump door; 100-liquid stop clamp structure; 200-liquid stopping cover; 210-a guide slot; 220-mounting grooves; 300-liquid stop wrench; 310-a liquid stop portion; 320-pulling part; 330-a swing part; 340-a first holding portion; 341-first holding surface; 342-a first arc; 400-a slide block; 410-a second holding portion; 411-second butting face; 412-second arc; 500-a first spring; 600-a second spring; 700-rotating shaft.

Detailed Description

To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "upper", "lower", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the products of the present invention are used, the description is only for convenience of description and simplification, but the indication or suggestion that the indicated device or element must have a specific position, be constructed and operated in a specific orientation, and thus, should not be interpreted as a limitation of the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

The liquid stop clip structure 100 provided in the present embodiment is described in detail below with reference to fig. 1 to 4.

Referring to fig. 1, 2, 3 and 4, an embodiment of the present invention provides a liquid stopping clip structure 100 for being installed in an infusion pump 10, the infusion pump 10 includes a pump seat 11 and a pump door 13, the pump seat 11 is provided with a channel 12 for installing an infusion tube, the liquid stopping clip structure 100 includes a liquid stopping cover 200, a liquid stopping wrench 300, a slider 400, a first spring 500 and a second spring 600; the liquid stopping cover 200 is arranged in the pump base 11 and is positioned at one side of the channel 12; the liquid stop wrench 300 is swingably provided in the liquid stop cover 200 by a first spring 500; the slider 400 is slidably disposed in the liquid stop cover 200 by a second spring 600; the liquid stopping wrench 300 is used for swinging to a first position under the action of the first spring 500 and pressing and stopping liquid for the infusion tube in the channel 12; or the liquid stopping wrench 300 is used for swinging to the second position under the action of external force and abutting against the slide block 400 so as to give way to the channel 12; or the liquid stop wrench 300 is used for abutting against the pump door 13 in a state that the pump door 13 is closed so as to swing to a third position and separate from the slide block 400, thereby opening the infusion tube in the channel 12; or the liquid stop wrench 300 is used to be reset to the first position in a state where the pump door 13 is opened.

The pump door 13 is rotatably connected to the pump base 11, and the pump door 13 is opened or closed during rotation relative to the pump base 11. The pump base 11 is formed with a passage 12, and the passage 12 is used for installing a transfusion tube. The liquid stop cover 200 is detachably connected to the pump base 11. Specifically, the liquid stop cover 200 has an opening, and the opening faces upward after the liquid stop cover 200 is snapped into the pump base 11.

The first spring 500 makes the liquid stop wrench 300 have a movement tendency of swinging to the first position, and the liquid stop wrench 300 swings to the first position under the action of the first spring 500 in a natural state to press the infusion tube and close the infusion tube. After the pump door 13 is opened, the liquid stopping wrench 300 is located at the first position, the liquid stopping wrench 300 is pulled by hand to swing the liquid stopping wrench 300 from the first position to the second position, at this time, the sliding block 400 moves under the action of the second spring 600 to abut against the liquid stopping wrench 300, the liquid stopping wrench 300 is prevented from swinging from the second position to the first position, and the channel 12 is made free, and in this state, the infusion tube can be mounted or dismounted on the channel 12. Referring to fig. 4, the pump door 13 is then closed, the pump door 13 abuts against the liquid stopping wrench 300, the liquid stopping wrench 300 is separated from the sliding block 400, the sliding block 400 also abuts against the pump door 13, and simultaneously the liquid stopping wrench 300 swings from the second position to the third position to make part of the channel 12 clear, that is, the infusion tube can be opened to circulate the infusion tube. At the moment when the pump door 13 is opened, the liquid stop wrench 300 is returned from the third position to the first position by the first spring 500, and the infusion tube is pressed and stopped.

It should be noted that: a first boss and a second boss are arranged on the inner side of the pump door 13, and the first boss is used for abutting against the liquid stop wrench 300 in a state that the pump door 13 is closed, so that the liquid stop wrench 300 is kept at a third position; the second protrusion is used for abutting against the slider 400 when the pump door 13 is closed, so that the slider 400 is kept in a state of being separated from the liquid stop wrench 300.

The liquid stopping wrench 300 is mainly realized by matching with the sliding block 400 in the switching process of the first position, the second position and the third position, the structure is simplified, the force borne by the pump door 13 can be greatly reduced under the closing state of the pump door 13, and the problem that the stress of the pump door 13 is large due to the fact that the liquid stopping clamp is opened after the pump door 13 is closed is solved well.

Referring to fig. 3 and 4, in the present embodiment, the liquid stop wrench 300 has a first abutting portion 340, and the sliding block 400 has a second abutting portion 410; the first abutting portion 340 and the second abutting portion 410 are slidably engaged to switch between the first abutting position and the second abutting position; when the liquid stop wrench 300 swings to the first position, the first abutting portion 340 abuts against the second abutting portion 410 at the first abutting position to prevent the sliding block 400 from popping out; when the liquid stop wrench 300 swings to the second position, the second abutting portion 410 abuts against the first abutting portion 340 at the second abutting position to prevent the liquid stop wrench 300 from swinging to the first position; the liquid stop wrench 300 and the slide block 400 abut against the pump door 13 at the same time when the pump door 13 is closed, so that the first abutting portion 340 is separated from the second abutting portion 410; the first abutting portion 340 is used for resetting to the first abutting position in a state that the pump door 13 is opened, so as to abut against the second abutting portion 410.

The liquid stop wrench 300 swings to the first position under the action of the first spring 500, the first abutting portion 340 abuts against the second abutting portion 410 at the first abutting position, the slider 400 is prevented from ejecting out the liquid stop cover 200, and the slider 400 compresses the second spring 600. The liquid stop wrench 300 swings from the first position to the second position against the action force of the first spring 500 under the action of an external force, the slider 400 partially pops out the liquid stop cover 200 under the action of the second spring 600, meanwhile, the second abutting portion 410 slides from the first abutting position to the second abutting position relative to the first abutting portion 340, and abuts against the first abutting portion 340 at the second abutting position to prevent the liquid stop wrench 300 from swinging, so that the liquid stop wrench 300 stays at the second position. When the pump door 13 is closed, the pump door 13 presses the liquid stopping wrench 300 and the sliding block 400 downward at the same time, the liquid stopping wrench 300 swings to a third position, the third position is located between the first position and the second position, the liquid stopping wrench 300 does not completely press the channel 12, the infusion tube circulates, meanwhile, the first abutting portion 340 and the second abutting portion 410 are separated, and the sliding block 400 abuts against the pump door 13. When the pump door 13 is opened, the first abutting portion 340 is reset to the first abutting position, and the second abutting portion 410 is abutted.

It should be noted that, when the liquid stop wrench 300 is located at the second position, the slider 400 partially pops out of the liquid stop cover 200, but the slider 400 does not entirely pop out of the liquid stop cover 200, because the slider 400 is pressed by the liquid stop wrench 300, and the side of the slider 400 is further provided with a blocking portion which presses against the liquid stop cover 200 to prevent the slider 400 from entirely popping out of the liquid stop cover 200.

Referring to fig. 4, in the present embodiment, the first abutting portion 340 has a first abutting surface 341 and a first arc surface 342 disposed at an included angle; the second abutting portion 410 has a second abutting surface 411 and a second arc surface 412 arranged at an included angle; the first abutting surface 341 is in sliding fit with the second abutting surface 411, and the first arc surface 342 is in sliding fit with the second arc surface 412; the first arc surface 342 is used for abutting against the second arc surface 412 at a first abutting position; the second arc surface 412 is used for guiding the first arc surface 342 to move to the first abutting position when the pump door 13 is in the open state; the first abutting surface 341 is configured to abut against the second abutting surface 411 at the second abutting position.

Specifically, the first abutting surface 341 and the first arc surface 342 are approximately V-shaped, and the second abutting surface 411 and the second arc surface 412 are approximately V-shaped.

Referring to the relative position shown in fig. 4, the first arc surface 342 is inclined, and the first abutting surface 341 is vertical. The second arc surface 412 is disposed transversely, and the second abutting surface 411 is disposed vertically. When the liquid stop wrench 300 is located at the first position, the first abutting portion 340 is located above the second abutting portion 410, and the first arc surface 342 abuts against the second arc surface 412; when the liquid stop wrench 300 is located at the second position, the first abutting portion 340 is located at the side of the second abutting portion 410, and the first abutting surface 341 abuts against the second abutting surface 411; when the pump door 13 is closed, the liquid stop wrench 300 and the slider 400 both move downward, the first abutting portion 340 is separated from the second abutting portion 410, the first abutting portion 340 is located above the second abutting portion 410, and the first arc surface 342 is located above the second arc surface 412; when the pump door 13 is closed and the liquid stop wrench 300 is reset to the first position, the first arc surface 342 slides above the second arc surface 412 to abut against the second arc surface 412, and the liquid stop wrench 300 is reset.

Referring to fig. 3 and 4, in the present embodiment, the liquid stop wrench 300 has a liquid stop portion 310 and a pulling portion 320; the liquid stopping part 310 and the pulling part 320 are both arranged at the opening of the liquid stopping cover 200; the liquid stopping part 310 is used for pressing and stopping the liquid for the infusion tube when the liquid stopping wrench 300 swings to the first position; the pulling portion 320 is used for pulling under an external force to swing the liquid stop wrench 300 to the second position.

Specifically, the pulling portion 320 is provided with grains for increasing the friction between the hand and the pulling portion 320 when the pulling portion 320 is pulled by hand. Specifically, the cross section of the liquid stopping part 310 is approximately V-shaped, so that the contact surface with the infusion tube can be reduced, the unit area pressure can be increased, the infusion tube can be pressed, and the purpose of closing the infusion tube is achieved.

Referring to fig. 3 and 4, in the present embodiment, the liquid stop wrench 300 further has a swing portion 330; the swing part 330 has two opposite ends, and one end of the swing part 330 is swingably connected in the liquid stop cover 200 through a first spring 500; the liquid stop portion 310 and the trigger portion 320 are connected to the other end of the swing portion 330.

Specifically, the overall layout of the liquid stop portion 310, the pulling portion 320, and the swing portion 330 is substantially in a "Y" shape.

The liquid stop wrench 300 further comprises a rotating shaft 700, the rotating shaft 700 is installed in the liquid stop cover 200, the first spring 500 is placed in the liquid stop cover 200, the swing portion 330 is rotatably connected to the rotating shaft 700 and abuts against the first spring 500, and the first spring 500 enables the liquid stop wrench 300 to have a movement tendency of swinging to a first position around the rotating shaft 700. The swing portion 330 is located in the liquid-stopping cover 200, the liquid-stopping portion 310 and the pulling portion 320 are located at the same end of the swing portion 330, and the liquid-stopping portion 310 and the pulling portion 320 are partially located outside the liquid-stopping cover 200.

Referring to fig. 3 and 4, in the present embodiment, a U-shaped gap is formed between the liquid stop portion 310 and the pulling portion 320. When the pulling portion 320 is pulled, the liquid stopping portion 310 is driven to swing synchronously.

Referring to fig. 3 and 4, in the present embodiment, the first abutting portion 340 is disposed between the pulling portion 320 and the swinging portion 330. The swing portion 330 is located inside the liquid-stopping cover 200, the pulling portion 320 is located outside the liquid-stopping cover 200, and the first abutting portion 340 is located on a side portion of the liquid-stopping wrench 300 and is used for sliding fit with the slider 400.

Referring to fig. 3, in the present embodiment, the sliders 400 are arranged side by side at one side of the liquid stop wrench 300. The sliding block 400 slides under the action of the second spring 600 and does not interfere with the swinging of the liquid stop wrench 300 under the action of the first spring 500, and the liquid stop wrench 300 is switched among the first position, the second position and the third position through the matching of the first abutting part 340 and the second abutting part 410.

Referring to fig. 3, in the present embodiment, a guide groove 210 is disposed inside the liquid-stop cover 200, the slider 400 is slidably disposed in the guide groove 210 through a second spring 600, and the guide groove 210 is used for guiding the second abutting portion 410 of the slider 400 to slide between the first abutting position and the second abutting position.

Specifically, the liquid stop cover 200 is further provided inside with a mounting groove 220, the mounting groove 220 is arranged side by side with the guide groove 210, the liquid stop wrench 300 is rotatably arranged in the mounting groove 220, and the slider 400 is slidably arranged in the guide groove 210.

According to the liquid stop clip structure 100 provided by the embodiment, the working principle of the liquid stop clip structure 100 is as follows: the slider 400 is installed in the liquid stop cover 200 through a second spring 600 and slides back and forth under the action of the liquid stop wrench 300 and the pump door 13; the liquid stop wrench 300 is swingably provided in the liquid stop cover 200 by a first spring 500, and swings between a first position, a second position, and a third position by an external force, the slider 400, and the pump door 13.

The liquid-stopping clip structure 100 provided by the embodiment has at least the following advantages:

the state of the liquid stop wrench 300 is mainly controlled by the slider 400, the structure is simplified, the force borne by the pump door 13 can be reduced, and the interference to other functions is reduced. Meanwhile, the operation is convenient, and the occupied space is small.

The embodiment of the utility model also provides an infusion pump 10. The infusion pump 10 comprises a pump seat 11, a pump door 13, an infusion tube and a liquid stopping clamp structure 100; the pump door 13 is rotatably connected to the pump base 11, and the pump base 11 is provided with a passage 12 for installing a transfusion tube. The liquid stop clip structure 100 is disposed in the pump mount 11. The problem that the pump door 13 is easily stressed due to the fact that the liquid stopping clamp is opened after the pump door 13 is closed can be solved.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. The utility model provides a end liquid and press from both sides structure for install in the transfer pump, the transfer pump includes pump seat (11) and pump door (13), pump seat (11) are provided with passageway (12) that are used for installing the transfer line, its characterized in that, end liquid and press from both sides the structure and include:

the liquid stopping device comprises a liquid stopping cover (200), a liquid stopping wrench (300), a sliding block (400), a first spring (500) and a second spring (600);

the liquid stopping cover (200) is arranged in the pump seat (11) and is positioned on one side of the channel (12); the liquid stopping wrench (300) is arranged in the liquid stopping cover (200) in a swinging mode through the first spring (500); the sliding block (400) is slidably arranged in the liquid stopping cover (200) through the second spring (600);

the liquid stopping wrench (300) is used for swinging to a first position under the action of the first spring (500) and pressing and stopping the liquid of the infusion tube in the channel (12); or the liquid stopping wrench (300) is used for swinging to a second position under the action of external force and abutting against the sliding block (400) so as to give way to the channel (12); or the liquid stopping wrench (300) is used for abutting against the pump door (13) in a state that the pump door (13) is closed so as to swing to a third position and be separated from the sliding block (400), so that the infusion tube in the channel (12) is opened; or the liquid stop wrench (300) is used for resetting to the first position in a state that the pump door (13) is opened.

2. The structure of claim 1, wherein:

the liquid stopping wrench (300) is provided with a first abutting part (340), and the sliding block (400) is provided with a second abutting part (410); the first abutting part (340) is in sliding fit with the second abutting part (410) so as to switch between a first abutting position and a second abutting position;

when the liquid stop wrench (300) swings to the first position, the first abutting part (340) abuts against the second abutting part (410) at the first abutting position to prevent the sliding block (400) from popping out; when the liquid stop wrench (300) swings to the second position, the second abutting part (410) abuts against the first abutting part (340) at the second abutting position so as to prevent the liquid stop wrench (300) from swinging to the first position; the liquid stopping wrench (300) and the sliding block (400) are abutted against the pump door (13) at the same time when the pump door (13) is closed, so that the first abutting part (340) is separated from the second abutting part (410); the first abutting portion (340) is used for resetting to the first abutting position under the condition that the pump door (13) is opened so as to abut against the second abutting portion (410).

3. The structure of claim 2, wherein:

the first abutting part (340) is provided with a first abutting surface (341) and a first cambered surface (342) which are arranged in an included angle; the second abutting part (410) is provided with a second abutting surface (411) and a second cambered surface (412) which are arranged at an included angle; the first abutting surface (341) is in sliding fit with the second abutting surface (411), and the first cambered surface (342) is in sliding fit with the second cambered surface (412);

the first cambered surface (342) is used for abutting against the second cambered surface (412) at the first abutting position; the second cambered surface (412) is used for guiding the first cambered surface (342) to move to the first abutting position when the pump door (13) is in an open state; the first abutting surface (341) is used for abutting against the second abutting surface (411) at the second abutting position.

4. A liquid stop clip structure according to any one of claims 2 to 3, wherein:

the liquid stop wrench (300) is provided with a liquid stop part (310) and a wrenching part (320); the liquid stopping part (310) and the pulling part (320) are arranged at the opening of the liquid stopping cover (200); the liquid stopping part (310) is used for pressing and stopping the liquid for the infusion tube when the liquid stopping wrench (300) swings to the first position; the pulling part (320) is used for pulling under the action of external force so as to enable the liquid stop wrench (300) to swing to the second position.

5. The structure of claim 4, wherein:

the liquid stopping wrench (300) is also provided with a swinging part (330); the swing part (330) is provided with two opposite ends, and one end of the swing part (330) is connected in the liquid stopping cover (200) in a swing mode through the first spring (500); the liquid stop portion (310) and the pulling portion (320) are connected to the other end of the swing portion (330) together.

6. The structure of claim 5, wherein:

a U-shaped gap is formed between the liquid stopping part (310) and the wrenching part (320).

7. The structure of claim 5, wherein:

the first abutting portion (340) is arranged between the wrenching portion (320) and the swinging portion (330).

8. A liquid stop clip structure according to any one of claims 2 to 3, wherein:

the sliding blocks (400) are arranged on one side of the liquid stopping wrench (300) side by side.

9. The structure of claim 8, wherein:

the liquid stopping cover (200) is internally provided with a guide groove (210), the sliding block (400) is slidably arranged in the guide groove (210) through the second spring (600), and the guide groove (210) is used for guiding the second abutting part (410) of the sliding block (400) to slide between the first abutting position and the second abutting position.

10. An infusion pump, characterized in that:

the infusion pump comprises a pump seat (11), a pump door (13), an infusion tube and the liquid stopping clamp structure of any one of claims 1 to 9; the pump door (13) is rotatably connected to the pump seat (11), and the pump seat (11) is provided with a channel (12) for installing the infusion tube.

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