Two-in-one liquid stopping device and infusion pump

Abstract

The embodiment of the invention provides a two-in-one liquid stopping device and an infusion pump, and relates to the field of medical instruments. The two-in-one liquid stopping device comprises a shell, a linkage component and a reset piece. The shell is provided with a mounting cavity, and an opening is formed in one side of the mounting cavity. The linkage component is rotatably mounted in the mounting cavity and provided with a first end extending out of the opening. A first clamping part is arranged on the side wall of the first end, and the first clamping part is configured to be matched with a second clamping part of the infusion pump so as to clamp an infusion tube. The side, located on the opening, of the linkage component is further provided with an inserting groove, and the inserting groove is configured to be in inserting connection with the liquid stopping clamp of the infusion tube with the liquid stopping clamp. The reset piece is arranged on the linkage component so as to drive the linkage component to rotate. The two-in-one liquid stopping device can be suitable for liquid stopping of two infusion tubes with and without liquid stopping clamps, and is higher in universality.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and more particularly, to a two-in-one liquid stop device and an infusion pump. Background Art

[0002] An infusion pump is a key device for precisely controlling the infusion speed and dose of liquid in the modern medical field, and is widely used in various departments of hospitals and emergency scenarios. Especially in treatments with extremely high requirements for infusion accuracy, such as chemotherapy and ICU monitoring, the infusion pump can effectively avoid errors caused by manual operation and provide guarantee for the safety of patients.

[0003] The infusion pump is used in conjunction with an infusion tube. In order to facilitate the stopping of infusion, a liquid stop component is provided inside the infusion pump, which can block the on-off of the infusion tube by mechanical or electronic control means. Currently, the common infusion tubes on the market are divided into two types: ordinary infusion tubes without a liquid stop clip and those with a liquid stop clip.

[0004] However, due to the differences in structure and function between these two types of infusion tubes, the corresponding liquid stop components of the infusion pump are also different. During clinical use, different infusion pumps need to be equipped for these two types of infusion tubes, which not only increases the management difficulty of medical devices but also reduces the versatility of the infusion pump. Summary of the Invention

[0005] The objectives of the present invention include providing a two-in-one liquid stop device and an infusion pump. The objective of the present invention is to provide a two-in-one liquid stop device and an infusion pump that can be applicable to infusion tubes with and without a liquid stop clip, and has stronger versatility.

[0006] The embodiments of the present invention can be implemented as follows: In a first aspect, the present invention provides a two-in-one liquid stop device applied to an infusion pump, including: A housing provided with an installation cavity, and an opening is formed on one side of the installation cavity; A linkage member rotatably installed in the installation cavity, and having a first end extending out of the opening. A first clamping portion is provided on the side wall of the first end, and the first clamping portion is configured to cooperate with a second clamping portion of the infusion pump to clamp the infusion tube. A plugging slot is further provided on one side of the linkage member located at the opening, and the plugging slot is configured to plug the liquid stop clip of the infusion tube with a liquid stop clip; A reset member provided on the linkage member to drive the linkage member to rotate; When cooperating with an infusion tube with a liquid stop clip: the liquid stop clip is inserted into the plugging slot, and when the tail gate of the infusion pump is closed, it can push the liquid stop clip to open and at the same time drive the linkage member to rotate in a first direction; when the tail gate is opened, the reset member can drive the linkage member to rotate in a second direction to apply pressure to the liquid stop clip to close the liquid stop clip; When cooperating with an infusion tube without a liquid stop clamp: First, place the infusion tube between the first clamping part and the second clamping part, and close the tail door of the infusion pump; during the opening process of the tail door, the reset member can drive the linkage member to rotate in the second direction so that the infusion tube is clamped between the first clamping part and the second clamping part; Wherein, the first direction and the second direction are opposite.

[0007] In an alternative embodiment, the linkage member includes a liquid stop wrench and a support member; One end of the liquid stop wrench is the first end, and the other end is the second end. The second end is rotatably installed in the installation cavity, and the first end extends out through the opening. The first clamping part is arranged on the side wall of the liquid stop wrench close to the first end; The support member is rotatably installed in the installation cavity and is located at the bottom of the liquid stop wrench and abuts against the liquid stop wrench; The insertion slot is arranged on one side of the support member corresponding to the opening and penetrates through the top of the support member, and can make the liquid stop clamp inserted into the insertion slot abut against the liquid stop wrench; The reset member is connected to the liquid stop wrench and / or the support member; The reset member can drive the liquid stop wrench to rotate in the second direction when the tail door of the infusion pump is opened; During the lifting process of the liquid stop wrench, the reset member can drive the support member to rotate in the second direction to support the liquid stop wrench so that the liquid stop wrench remains in the lifted state.

[0008] In an alternative embodiment, the reset member includes a first elastic member; The first elastic member is arranged on the liquid stop wrench, and one end of the first elastic member acts on the liquid stop wrench and the other end acts on the housing; When the tail door of the infusion pump is opened, the first elastic member can drive the liquid stop wrench to rotate in the second direction.

[0009] In an alternative embodiment, the first elastic member is a tension spring, one end of the tension spring is connected to the liquid stop wrench, and the other end of the tension spring is connected to the housing.

[0010] In an alternative embodiment, the reset member further includes a second elastic member; The second elastic member is arranged on the support member, and one end acts on the support member and the other end acts on the housing; During the lifting process of the liquid stop wrench, the second elastic member can drive the support member to rotate in the second direction; The elastic force of the first elastic member is greater than that of the second elastic member; During the opening process of the tailgate, the liquid stop wrench can apply pressure to the support member under the action of the first elastic member, so that the support member rotates in the first direction by overcoming the elastic force of the second elastic member.

[0011] In an alternative embodiment, the second elastic member is a torsion spring; The support member is rotatably mounted in the installation cavity through a rotating shaft and is connected to the housing; The support member is provided with an assembly portion corresponding to the rotating shaft, the torsion spring is mounted on the assembly portion, and one end of the torsion spring abuts against the support member and the other end abuts against the housing.

[0012] In an alternative embodiment, a limiting groove is provided on a side of the liquid stop wrench close to the support member, and a limiting platform is provided on a side of the support member close to the liquid stop wrench, and the limiting platform extends into the limiting groove; During the lifting process of the liquid stop wrench, the support member can rotate in the second direction under the action of the second elastic member so that the limiting portion abuts against the front side wall of the limiting groove and forms a support for the liquid stop wrench, and a gap is formed between the first clamping portion and the second clamping portion.

[0013] In an alternative embodiment, the two-in-one liquid stop device further includes a push rod, one end of the push rod is rotatably connected to the support member, and the other end extends out of the housing; Pressing the push rod can drive the support member to rotate in the first direction, so that the support member releases the support for the liquid stop wrench.

[0014] In an alternative embodiment, the two-in-one liquid stop device further includes a position detection sensor; The support member is provided with a detection portion; The position detection sensor is disposed on the housing and corresponds to the detection portion; After the support member rotates to a preset position in the first direction, the detection portion is located in the detection area of the position detection sensor.

[0015] In an alternative embodiment, a mating groove is provided on a side of the liquid stop wrench close to the support member, the mating groove corresponds to and communicates with the insertion groove, and the liquid stop clip can be inserted into the insertion groove and the mating groove.

[0016] In a second aspect, the present embodiment further provides an infusion pump, including an infusion pump body, a tailgate, and the two-in-one liquid stop device according to any one of the above alternative embodiments; The two-in-one liquid stop device is arranged inside the infusion pump body, and a notch corresponding to the opening is arranged at the tail of the infusion pump body, and the first end extends out of the infusion pump body from the notch; The second clamping part is arranged on the infusion pump body and corresponds to the first clamping part; The tail door is rotatably installed on one side of the infusion pump body where the notch is arranged.

[0017] In an optional embodiment, the first clamping part has a connected first bottom surface and a first inclined surface. The first bottom surface is a plane, and the first inclined surface is located on one side of the first clamping part and is inclined relative to the first bottom surface so that the first clamping part becomes thinner in the direction of the first bottom surface; The second clamping part is provided with a cutting groove which has a connected second bottom surface and a second inclined surface. The second inclined surface is located on the side of the second bottom surface close to the first inclined surface, and the inclination direction of the second inclined surface is the same as that of the first inclined surface. The first bottom surface and the second bottom surface correspond to each other, and the first inclined surface and the second inclined surface correspond to each other.

[0018] In an optional embodiment, the tail door is provided with a first protrusion and a second protrusion. The first protrusion corresponds to the first end. When the tail door is closed, the first protrusion can support the first end from the bottom of the first end; The second protrusion is configured to push the liquid stop clamp open when the tail door is closed.

[0019] In an optional embodiment, the end face of the first protrusion is provided with a guiding inclined surface. During the closing process of the tail door, the end of the first end can cooperate with the guiding inclined surface to make the linkage member rotate and lift in the first direction.

[0020] The beneficial effects of the two-in-one liquid stop device and the infusion pump provided by the embodiments of the present invention include: In this application, the linkage member is rotatably installed in the installation cavity, and a first clamping portion corresponding to the second clamping portion of the infusion pump is provided on the side wall of the first end where the linkage member extends out of the opening. A plugging groove for plugging the liquid stop clip is also provided on one side of the linkage member located at the opening. A reset member is arranged on the linkage member to drive the linkage member to rotate. Thus, when cooperating with an infusion tube with a liquid stop clip: the liquid stop clip is plugged into the plugging groove, and when the tail gate of the infusion pump is closed, it can push the liquid stop clip open and drive the linkage member to rotate in the first direction at the same time; when the tail gate is opened, the reset member can drive the linkage member to rotate in the second direction to apply pressure to the liquid stop clip to close the liquid stop clip. When cooperating with an infusion tube without a liquid stop clip: first, the infusion tube is arranged between the first clamping portion and the second clamping portion, and the tail gate of the infusion pump is closed; during the process of opening the tail gate, the reset member can drive the linkage member to rotate in the second direction to clamp the infusion tube between the first clamping portion and the second clamping portion. Overall, the two-in-one liquid stop device provided in this application is applicable to both infusion tubes with liquid stop clips and infusion tubes without liquid stop clips, improving the versatility and being more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0022] Figure 1 Structural schematic diagram of the infusion pump provided in this embodiment; Figure 2 Structural schematic diagram of the infusion pump provided in this embodiment when the tail gate is opened; Figure 3 For Figure 2 Enlarged schematic diagram at A in Figure 4 Structural schematic diagram of the two-in-one liquid stop device provided in this embodiment; Figure 5 Exploded structural schematic diagram of a part of the two-in-one liquid stop device provided in this embodiment; Figure 6 Structural schematic diagram of the linkage member of the two-in-one liquid stop device provided in this embodiment; Figure 7 Schematic diagram of the movement direction of the support assembly during the process of lifting the liquid stop wrench of the two-in-one liquid stop device provided in this embodiment; Figure 8 Schematic diagram of the two-in-one liquid stop device provided in this embodiment when the support member supports the liquid stop wrench; Figure 9 Structural schematic diagram of the liquid stop clip provided in this embodiment; Figure 10 Schematic cross-sectional structure diagram of the liquid stop clip provided in this embodiment; Figure 11 Schematic diagram of the infusion pump provided in this embodiment with the tail gate open and the pressure infusion tube with the liquid stop clip assembled to the corresponding position; Figure 12 Partial cross-sectional schematic diagram at the support member of the infusion pump provided in this embodiment with the tail gate closed and the pressure infusion tube of the liquid stop clip assembled to the corresponding position; Figure 13 Partial cross-sectional schematic diagram at the liquid stop wrench of the infusion pump provided in this embodiment with the tail gate closed and the pressure infusion tube of the liquid stop clip assembled to the corresponding position; Figure 14 Partial cross-sectional schematic diagram at the support member of the infusion pump provided in this embodiment with the tail gate open and the infusion tube without the liquid stop clip arranged between the first clamping portion and the second clamping portion; Figure 15 Partial cross-sectional schematic diagram of the infusion pump provided in this embodiment with the tail gate closed; Figure 16 Partial cross-sectional schematic diagram of the infusion pump provided in this embodiment with the tail gate open and the infusion tube without the liquid stop clip clamped between the first clamping portion and the second clamping portion; Figure 17 Schematic structure diagram of the liquid stop wrench of the two-in-one liquid stop device provided in this embodiment.

[0023] Icons: 100 - Two-in-one liquid stop device; 110 - Housing; 111 - Installation cavity; 112 - Opening; 113 - Left housing; 114 - Right housing; 115 - Insertion hole; 130 - Linkage member; 131 - First end; 132 - First clamping portion; 133 - Insertion slot; 134 - Liquid stop wrench; 135 - Support member; 136 - Second end; 137 - Fitting groove; 138 - Mounting shaft; 139 - Hanging portion; 140 - Rotating shaft; 141 - Assembly portion; 142 - Limiting groove; 143 - Limiting platform; 144 - First bottom surface; 145 - First inclined surface; 146 - Detection portion; 147 - Light-shielding plate; 150 - Reset member; 151 - First elastic member; 152 - Tension spring; 153 - Second elastic member; 154 - Torsion spring; 170 - Push rod; 190 - Position detection sensor; 191 - Transmitting end; 193 - Receiving end; 200 - Liquid stop clip; 210 - Base; 230 - Movable arm; 231 - Limiting portion; 250 - First elastic arm; 270 - Second elastic arm; 271 - Clamping portion; 300 - Infusion pump; 310 - Infusion pump body; 311 - Rear end plate; 313 - Notch; 315 - Clamping slot; 317 - Second clamping portion; 319 - Cutting groove; 321 - Second bottom surface; 323 - Second inclined surface; 330 - Tail gate; 331 - First protrusion; 333 - Second protrusion; 335 - Third protrusion. Detailed implementation manners

[0024] Since these two types of infusion tubes differ in structure and function, the corresponding liquid stop assemblies of the infusion pumps are also different. During clinical use, different infusion pumps need to be equipped for these two types of infusion tubes, which not only increases the management difficulty of medical equipment but also reduces the versatility of the infusion pump.

[0025] In view of the above problems, the present invention provides a two-in-one liquid stop device and an infusion pump device, which can be applicable to two types of infusion tubes with and without a liquid stop clip, thereby improving the poor versatility of the above-mentioned infusion pump.

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated herein can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0028] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, further definition and explanation thereof is not required in subsequent figures.

[0029] In the description of the present invention, it should be noted that if terms such as "upper", "lower", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the figures or the orientation or positional relationship in which the product of the present invention is usually placed during use. This is only for the convenience of describing the present invention 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 a limitation to the present invention.

[0030] In addition, if terms such as "first", "second", etc. are used only for distinguishing descriptions, they cannot be understood as indicating or implying relative importance.

[0031] It should be noted that, without conflict, the features in the embodiments of the present invention can be combined with each other.

[0032] The overall structure, working principle and technical effects achieved by the two-in-one liquid stop device and infusion pump provided by the present invention will be introduced in detail below through embodiments in conjunction with the figures.

[0033] Please refer to Figures 1 to 17 , this embodiment provides an infusion pump 300, which is applicable to infusion tubes with a liquid stop clip 200 and infusion tubes without a liquid stop clip 200, and has strong versatility.

[0034] It should be noted that the difference between an infusion tube with a liquid stop clip 200 and an infusion tube without a liquid stop clip 200 is that the infusion tube with a liquid stop clip 200 has an additional liquid stop clip 200. The function of the liquid stop clip 200 is to be able to open or block the flow of liquid in the infusion tube. The liquid stop clip 200 of the infusion tube with a liquid stop clip 200 is generally installed on the infusion tube and belongs to the standard component of this type of infusion tube when it leaves the factory. While the infusion tube without a liquid stop clip 200 is a conventional infusion tube, and no liquid stop clip 200 is provided on the infusion tube when it leaves the factory. The infusion tube with a liquid stop clip 200 is commonly used for long-term or intermittent drug infusion. During the infusion process, the flow of liquid can be flexibly controlled, which is convenient for medical staff to adjust the infusion speed, pause or continue the infusion according to the patient's condition and physical condition, ensuring the accuracy and safety of the treatment.

[0035] The liquid stop clip 200 is generally integrally formed by processes such as injection molding. The liquid stop clip 200 includes a base 210 and a movable arm 230. A first elastic arm 250 is connected between one end of the base 210 and one end of the movable arm 230. The first elastic arm 250 is used to provide a force for the movable arm 230 and the base 210 to move away from each other. A second elastic arm 270 is provided at the other end of the base 210. A clamping portion 271 is provided at one end of the second elastic arm 270 away from the base 210. A limiting portion 231 is provided at one end of the movable arm 230 away from the base 210. The infusion tube is generally threaded between the base 210 and the elastic arm. Applying a pressure to the movable arm 230 in the direction of the base 210 can cause the limiting portion 231 to be clamped with the clamping portion 271, and the movable arm 230 and the base 210 can clamp the infusion tube, so that the liquid in the infusion tube cannot flow. When the limiting portion 231 is clamped with the clamping portion 271, the clamping portion 271 is located inside the limiting portion 231. Pressing the second elastic arm 270 inward to deform the second elastic arm 270 will cause the clamping portion 271 to disengage from the movable arm 230 and release the clamping, and then the movable arm 230 will be lifted under the action of the first elastic arm 250, thereby opening the liquid stop clip 200.

[0036] In this embodiment, the infusion pump 300 includes an infusion pump body 310, a tail door 330, and a two-in-one liquid stop device 100. Among them, the infusion pump body 310 has a rear end plate 311, the tail door 330 is movably installed outside the rear end plate 311, and an assembly cavity is provided inside the infusion pump body 310, and the rear end plate 311 is provided with a notch 313 communicating with the assembly cavity. The two-in-one liquid stop device 100 is disposed in the assembly cavity corresponding to the notch 313, and a part of the structure extends out of the notch 313. The rear end plate 311 is provided with a clamping groove 315. The pipe part of the infusion tube with or without the liquid stop clip 200 can be clamped in the clamping groove 315. After the tail door 330 is closed, it can cover the outside of the rear end plate 311.

[0037] Please refer to Figures 1 to 17 , further, the bottom of the tail door 330 and the bottom of the rear end plate 311 are hinged by a hinge shaft. A buckle structure (not shown in the figure) is provided at the top of the rear end plate 311, and a locking structure (not shown in the figure) is provided on the tail door 330 corresponding to the buckle assembly. When the tail door 330 rotates along the hinge shaft to the closed position, the locking assembly will be clamped in the buckle structure to fix the tail plate in the closed position. When it is necessary to open the tail door 330, the clamping of the buckle assembly can be released by operating the locking structure, so that the tail door 330 rotates and opens. The tail door 330 can shield the two-in-one liquid stop device 100 and structures such as the infusion tube installed in the clamping groove 315 inside to avoid misoperation.

[0038] Further, the two-in-one liquid stop device 100 includes a housing 110, a linkage member 130, and a reset member 150. The housing 110 is provided with an installation cavity 111, and an opening 112 is formed on one side of the installation cavity 111. The housing 110 and the rear end plate 311 are connected by fasteners. The opening 112 corresponds to the notch 313. The linkage member 130 is rotatably installed in the installation cavity 111 and has a first end 131 extending out of the opening 112, and the first end 131 extends out of the rear end plate 311 through the notch 313. A first clamping portion 132 is provided on the side wall of the first end 131. A second clamping portion 317 is provided in the lower edge area of the rear end plate 311 located in the clamping groove 315, and the second clamping portion 317 and the first clamping portion 132 are in corresponding positions. The first clamping portion 132 is configured to cooperate with the second clamping portion 317 to clamp the infusion tube. A plug-in slot 133 is further provided on one side of the linkage member 130 located at the opening 112, and the plug-in slot 133 also corresponds to the notch 313. The plug-in slot 133 is configured to plug the liquid stop clip 200 of the infusion tube with the liquid stop clip 200. When using the infusion tube with the liquid stop clip 200, medical staff can insert one end of the first elastic arm 250 of the liquid stop clip 200 into the plug-in slot 133 through the notch 313 and the opening 112. The reset member 150 is provided on the linkage member 130 to drive the linkage member 130 to rotate.

[0039] When the two-in-one liquid stop device 100 cooperates with the infusion tube with the liquid stop clip 200: first, one end of the liquid stop clip 200 corresponding to the first elastic arm 250 is inserted into the plug-in slot 133. When the tail gate 330 of the infusion pump 300 is closed, it can push the liquid stop clip 200 to open while causing the linkage member 130 to rotate in the first direction. When the tail gate 330 is opened, the reset member 150 can drive the linkage member 130 to rotate in the second direction to apply pressure to the liquid stop clip 200 to close the liquid stop clip 200.

[0040] When the two-in-one liquid stop device 100 cooperates with the infusion tube without the liquid stop clip 200: first, the infusion tube is arranged between the first clamping portion 132 and the second clamping portion 317, and the tail gate 330 of the infusion pump 300 is closed; during the opening process of the tail gate 330, the reset member 150 can drive the linkage member 130 to rotate in the second direction to clamp the infusion tube between the first clamping portion 132 and the second clamping portion 317.

[0041] In this embodiment, the linkage member 130 is rotatably installed in the installation cavity 111, and a first clamping portion 132 corresponding to the second clamping portion 317 of the infusion pump body 310 is provided on the side wall of the first end 131 where the linkage member 130 extends out of the opening 112. A plugging groove 133 for plugging the stop clamp 200 is also provided on one side of the linkage member 130 located at the opening 112. The reset member 150 is arranged on the linkage member 130 to drive the linkage member 130 to rotate. When the infusion pump 300 is used in cooperation with the infusion tube with the stop clamp 200: the stop clamp 200 is plugged into the plugging groove 133, and when the tail door 330 of the infusion pump 300 is closed, it can push the stop clamp 200 to open and drive the linkage member 130 to rotate in the first direction at the same time. When the tail door 330 is opened, the reset member 150 can drive the linkage member 130 to rotate in the second direction to apply pressure to the stop clamp 200 to close the stop clamp 200. When the infusion pump 300 is used in cooperation with the infusion tube without the stop clamp 200: first, the infusion tube is arranged between the first clamping portion 132 and the second clamping portion 317, the tail door 330 is closed, and the first clamping portion 132 releases the clamping of the infusion tube. During the opening process of the tail door 330, the reset member 150 can drive the linkage member 130 to rotate in the second direction to clamp the infusion tube between the first clamping portion 132 and the second clamping portion 317. Overall, the two-in-one stop device 100 provided by this embodiment is applicable to both the infusion tube with the stop clamp 200 and the infusion tube without the stop clamp 200, improving the versatility and being more convenient to use.

[0042] It should be noted that the first direction and the second direction are opposite, one is clockwise and the other is counterclockwise. In this embodiment, the first direction is the counterclockwise direction and the second direction is the clockwise direction. When the linkage member 130 rotates in the first direction, its first end 131 will rise. When the linkage member 130 rotates in the second direction, its first end 131 will descend. Here, the rise and fall are described relative to the second clamping portion 317. Of course, in some embodiments of the present application, the two-in-one stop device 100 can also be rotated 180° and assembled in the installation cavity 111, and the second clamping portion 317 is arranged on the upper edge of the clamping groove 315.

[0043] Specifically, when the infusion pump 300 is used in cooperation with the infusion tube with the stop clamp 200: First, open the tail door 330, and then insert the liquid stop clip 200 corresponding to one end of the first elastic arm 250 into the insertion slot 133. After that, snap the infusion tube into the snap-in groove 315. Finally, close the tail door 330 of the infusion pump 300. The overall operation process is relatively simple and does not require operating the two-in-one liquid stop device 100, which saves time. Closing the tail door 330 of the infusion pump 300 can push the liquid stop clip 200 to move. When the liquid stop clip 200 moves, it can drive the linkage member 130 to rotate in the first direction. At the same time, when the tail door 330 pushes the liquid stop clip 200 to move, the tail door 330 will also abut against the second elastic arm 270 of the liquid stop clip 200, causing the second elastic arm 270 to deform and the clamping portion 271 to release the clamping of the limiting portion 231. After the clamping is released, the movable arm 230 of the liquid stop clip 200 will move away from the base 210 under the action of the first elastic arm 250, releasing the clamping of the infusion tube. During the opening process of the tail door 330: First, the tail door 330 will release the abutment against the second elastic arm 270, causing the second elastic arm 270 to recover its deformation. At the same time, the reset member 150 can drive the linkage member 130 to rotate in the second direction. When the linkage member 130 rotates in the second direction, the first end 131 descends, applying pressure to the movable arm 230 of the liquid stop clip 200, causing the first elastic arm 250 to deform and the movable arm 230 to move towards the base 210, so that the clamping portion 271 is clamped with the limiting portion 231 to achieve liquid stop.

[0044] Overall, when the infusion pump 300 is used in cooperation with the infusion tube with the liquid stop clip 200, no additional operation on the two-in-one liquid stop device 100 is required. Only the infusion pipeline and the liquid stop clip 200 need to be installed in the preset positions, and other operations will be linked to the opening and closing of the tail door 330, which is more convenient.

[0045] Specifically, when the infusion pump 300 is used in cooperation with the infusion tube without the liquid stop clip 200: First, open the tail door 330, drive the linkage member 130 to rotate in the first direction, so that the first clamping portion 132 rotates away from the second clamping portion 317 to form a gap between them, then place the infusion tube between the first clamping portion 132 and the second clamping portion 317 and in the snap-in groove 315, and then close the tail door 330. When liquid stop is needed, just open the tail door 330. During the opening process of the tail door 330, the reset member 150 can drive the linkage member 130 to rotate in the second direction, making the first end 131 of the linkage member 130 move towards the infusion tube close to the second clamping portion 317 and clamp the infusion tube between the first clamping portion 132 and the second clamping portion 317, thus achieving liquid stop.

[0046] Overall, when the infusion pump 300 is used in conjunction with an infusion tube without a liquid stop clip 200, when the tail door 330 is opened, the linkage member 130 can be rotated in the second direction, and the first clamping portion 132 and the second clamping portion 317 cooperate to clamp the infusion tube without a liquid stop clip 200 to achieve liquid stop. The liquid stop is more convenient, and no additional operation is required. Only by opening the tail door 330 can the liquid stop be achieved, and the operation is more convenient.

[0047] In this embodiment, the housing 110 includes a left housing 113 and a right housing 114. The left housing 113 and the right housing 114 are assembled together by fasteners and enclose to form an installation cavity 111. The opening 112 is provided at the front end of the right housing 114. Setting the housing 110 in two parts facilitates the installation of the linkage member 130 in the installation cavity 111.

[0048] Please refer to Figures 1 to 17 , further, the linkage member 130 includes a liquid stop wrench 134 and a support member 135. One end of the liquid stop wrench 134 is the first end 131, and the other end is the second end 136. The second end 136 is rotatably installed in the installation cavity 111, and the first end 131 extends in the direction of the opening 112 and protrudes from the notch 313 out of the infusion pump body 310. The first clamping portion 132 is provided on the side wall of the liquid stop wrench 134 near the first end 131 and is arranged relative to the second clamping portion 317. The support member 135 is rotatably installed in the installation cavity 111 and is located at the bottom of the liquid stop wrench 134 and can abut against the liquid stop wrench 134. The insertion slot 133 is provided on one side of the support member 135 corresponding to the opening 112, and the top penetrates through the support member 135, and can make the liquid stop clip 200 inserted in the insertion slot 133 abut against the liquid stop wrench 134. The reset member 150 is connected to the liquid stop wrench 134 and the support member 135. The reset member 150 can drive the liquid stop wrench 134 to rotate in the second direction when the tail door 330 of the infusion pump 300 is opened. During the process of lifting the liquid stop wrench 134, the reset member 150 can also drive the support member 135 to rotate in the second direction to support the liquid stop wrench 134 and keep the liquid stop wrench 134 in the lifted state.

[0049] In this embodiment, the linkage member 130 is set as the liquid stop wrench 134 and the support member 135, the first clamping portion 132 is provided on the liquid stop wrench 134, the insertion slot 133 is provided on the support member 135, and the support member 135 is provided at the bottom of the liquid stop wrench 134. In this way, the structure of the linkage member 130 is simple, and it can be used in conjunction with an infusion tube with a liquid stop clip 200 and an infusion tube without a liquid stop clip 200.

[0050] When the two-in-one liquid stop device 100 is matched with the infusion tube with a liquid stop clip 200: Open the tail door 330 and insert the liquid stop clip 200 into the insertion slot 133 of the support member 135. Since the top of the insertion slot 133 penetrates, the liquid stop wrench 134 also abuts against the movable arm 230 of the liquid stop clip 200. In this way, during the process of closing the tail door 330, the tail door 330 pushes the liquid stop clip 200 to move, and the liquid stop clip 200 pushes the support member 135 to rotate along the first direction. At the same time, it will also make the liquid stop wrench 134 rotate in the first direction, causing the first end 131 to lift and not exert pressure on the movable arm 230. In this way, after the second elastic arm 270 deforms until the engaging portion 271 is disengaged from the limiting portion 231, the movable arm 230 will separate from the base 210 under the action of the first elastic arm 250 to release the clamping of the infusion tube. During the process of opening the tail door 330, the reset member 150 can make the liquid stop wrench 134 rotate in the second direction, causing the first end 131 to descend and abut against the movable arm 230 of the liquid stop clip 200, exerting pressure on the movable arm 230 to make the movable arm 230 move towards the base 210 to clamp the infusion pipeline and making the limiting portion 231 engage with the engaging portion 271 to keep the liquid stop clip 200 in the liquid stop state.

[0051] Please refer to Figures 1 to 17 , when the two-in-one liquid stop device 100 is matched with the infusion tube without a liquid stop clip 200, first lift the liquid stop wrench 134. At this time, the support member 135 will rotate in the second direction under the action of the reset member 150, so that the support member 135 forms a support for the lifted liquid stop wrench 134 to keep the first clamping portion 132 and the second clamping portion 317 in the open state. Then, set the infusion tube between the first clamping portion 132 and the second clamping portion 317. Due to the support of the support member 135, the setting of the infusion tube is more convenient. Finally, when ready, close the tail door 330. When liquid stop is needed, just open the tail door 330. After opening the tail door 330, the liquid stop wrench 134 will rotate in the second direction under the action of the reset member 150, so that the first clamping portion 132 and the second clamping portion 317 cooperate to clamp the infusion tube to achieve liquid stop.

[0052] Furthermore, a cooperation groove 137 is provided on the side of the liquid stop wrench 134 close to the support member 135. The cooperation groove 137 corresponds to and communicates with the insertion slot 133, and the liquid stop clip 200 can be inserted into the insertion slot 133 and the cooperation groove 137.

[0053] In this embodiment, the cooperation groove 137 is provided, so that part of the liquid stop clip 200 can be inserted into the insertion slot 133, and part will also be inserted into the cooperation groove, which is convenient for better exerting pressure on the movable arm 230 when the liquid stop wrench 134 rotates in the second direction.

[0054] Please refer to Figures 1 to 17, in this embodiment, the second end 136 of the liquid stop wrench 134 is installed in the installation cavity 111 through the installation shaft 138, and the installation shaft 138 is connected to the left housing 113 and the right housing 114. By providing the installation shaft 138 to install the liquid stop wrench 134 in this embodiment, it is convenient for the liquid stop wrench 134 to rotate in the first direction and the second direction, and it is also convenient for the first end 131 of the liquid stop wrench 134 to be lifted and lowered.

[0055] In this embodiment, the reset member 150 includes a first elastic member 151. The first elastic member 151 is disposed on the liquid stop wrench 134, and one end of the first elastic member 151 acts on the liquid stop wrench 134, and the other end acts on the housing 110. When the tail door 330 of the infusion pump 300 is opened, the first elastic member 151 can drive the liquid stop wrench 134 to rotate in the second direction.

[0056] In this embodiment, the first elastic member 151 is provided, and the first elastic member 151 can be used to conveniently drive the liquid stop wrench 134 to rotate in the second direction. Such a setting makes the structure simpler and the cost lower.

[0057] Please refer to Figures 1 to 17 , in this embodiment, the first elastic member 151 is a tension spring 152. One end of the tension spring 152 is connected to the liquid stop wrench 134, and the other end of the tension spring 152 is connected to the housing 110.

[0058] In this embodiment, the first elastic member 151 is set as the tension spring 152. When the liquid stop wrench 134 rotates in the first direction, the tension spring 152 will be stretched to store energy. When the liquid stop wrench 134 lacks support, the tension spring 152 can pull the liquid stop wrench 134 to rotate in the second direction under the action of the restoring force, so as to apply pressure to the liquid stop clip 200 or clamp the infusion tube between the first clamping portion 132 and the second clamping portion 317. In this way, the cost is low and it is convenient for installation.

[0059] Furthermore, the liquid stop wrench 134 is provided with a hanging portion 139, and the hanging portion 139 is located on the side of the installation shaft 138 close to the first end 131. One end of the tension spring 152 is connected to the hanging portion 139, and the other end is connected to the housing 110. The tension spring 152 is in a pre-stretched state during installation. Even when the liquid stop wrench 134 rotates to the moving stop point position in the second direction, the tension spring 152 is also in a stretched state and has a large elastic force. In this way, it can be ensured that the first clamping portion 132 and the second clamping portion 317 can clamp the infusion tube to achieve liquid stopping and can apply pressure to the liquid stop clip 200.

[0060] Of course, in some other embodiments of the present application, the first elastic member 151 can also be implemented by structures such as a torsion spring 154, an elastic band, a spring sheet, etc., as long as it can provide a pulling force in the second direction to the liquid stop wrench 134.

[0061] Secondly, in some other embodiments of the present application, the reset member 150 may also be a motor, which is connected to the stop lever 134 through transmission, and the forward and reverse rotation of the motor is linked to the opening and closing of the tailgate 330 through a program, for example, a sensor or a proximity switch is set on the tailgate 330. When the tailgate 330 is closed, the stop lever 134 is driven by the motor to rotate in the first direction, and when the tailgate 330 is opened, the stop lever 134 is driven by the motor to rotate in the second direction.

[0062] Please refer to Figures 1 to 17 In this embodiment, the reset member 150 further includes a second elastic member 153, which is disposed on the support member 135, and one end of the second elastic member 153 acts on the support member 135, and the other end acts on the housing 110. In the process of lifting the stop lever 134, the second elastic member 153 can drive the support member 135 to rotate in the second direction to support the stop lever 134. The elastic force of the first elastic member 151 is greater than the elastic force of the second elastic member 153. In the process of opening the tailgate 330, the stop lever 134 can apply pressure to the support member 135 under the action of the first elastic member 151, so that the support member 135 overcomes the elastic force of the second elastic member 153 and rotates in the first direction.

[0063] In this embodiment, a second elastic member 153 is provided to the support member 135, so that the second elastic member 153 can drive the support member 135 to rotate in the second direction, thereby supporting the liquid stop wrench 134 after the liquid stop wrench 134 is lifted, making it easier to remove the infusion tube and the liquid stop clamp 200.

[0064] Further, the second elastic member 153 is a torsion spring 154. The support member 135 is rotatably mounted in the mounting cavity 111 through the rotating shaft 140, and is connected to the housing 110. The support member 135 is provided with an assembly portion 141 corresponding to the rotating shaft 140, and the torsion spring 154 is mounted on the assembly portion 141, and one end of the torsion spring 154 is connected to the support member 135, and the other end abuts against the housing 110.

[0065] In this embodiment, the second elastic member 153 is configured as a torsion spring 154 , and the torsion spring 154 can be used to better drive the support member 135 to rotate.

[0066] In some other embodiments of the present application, the torsion spring 154 may also be replaced by other elastic members, such as the tension spring 152, an elastic band, a spring, etc.

[0067] Of course, in some other embodiments of the present application, the reset member 150 that drives the support member 135 to rotate can also be set as a motor, and the motor is connected to the support member 135 by transmission, and the forward and reverse rotation of the motor is linked with the rotation of the tailgate 330 and the stop wrench 134 through a program. When the tailgate 330 is opened, the motor drives the support member 135 to rotate in the second direction to release the support for the stop wrench 134. After the stop wrench 134 is lifted, the motor drives the support member 135 to rotate in the second direction to form support for the stop wrench 134. Secondly, the stop wrench 134 and the support member 135 can also be connected by transmission through a transmission member, and the reset member 150 can be set as a motor, and the motor can drive the stop wrench 134 and the support member 135 to rotate.

[0068] Secondly, in some other embodiments of the present application, the second elastic member 153 may not be provided, and the support member 135 and the liquid stop wrench 134 may be directly connected in transmission, and both are driven to rotate by the first elastic member 151.

[0069] In some other embodiments of the present application, the support member 135 can also be directly fixed to the housing 110, and the position corresponding to the bottom of the stop wrench 134 forms a mounting seat for the stop wrench 200. In this case, after the stop wrench 134 is lifted, since the support member 135 cannot rotate, it will not support the stop wrench 134, which will make the operation slightly more troublesome, but it can also achieve the adaptation of both infusion tubes with and without the stop wrench 200.

[0070] Please refer to Figures 1 to 17 In this embodiment, the bottom end of the support member 135 is rotatably mounted in the mounting cavity 111 via the rotating shaft 140, so that the support member 135 rotates and cooperates with the first elastic member 151 to raise or lower the first end 131 of the stop wrench 134. One end of the tension spring 152 that provides a reset tension force to the stop wrench 134 is mounted on the rotating shaft 140, so that the overall structure is less and the cost is relatively low.

[0071] In this embodiment, a limiting groove 142 is provided on one side of the stop wrench 134 close to the support member 135, and a limiting platform 143 is provided on one side of the support member 135 close to the stop wrench, and the limiting platform 143 extends into the limiting groove 142. When the stop wrench 134 is lifted, the support member 135 can rotate toward the second direction under the action of the second elastic member 153 so that the limiting portion 231 abuts against the front side wall of the limiting groove 142 and supports the stop wrench 134, so that a gap is formed between the first clamping portion 132 and the second clamping portion 317.

[0072] In this embodiment, a limiting groove 142 is provided on one side of the stop wrench 134 close to the support member 135, and a limiting platform 143 is provided on one side of the support member 135 close to the stop wrench 134. The cooperation between the limiting platform 143 and the limiting groove 142 can limit the rotation angle of the support member 135, so as to prevent the support member 135 from rotating in the second direction under the action of the torsion spring 154 and separating the support member 135 from the stop wrench 134. Secondly, after the stop wrench 134 is lifted, the support member 135 can rotate in the second direction under the action of the second elastic member 153 so that the limiting portion 231 abuts against the front side wall of the limiting groove 142 and supports the stop wrench 134, so that a gap is formed between the first clamping portion 132 and the second clamping portion 317, so that when using an infusion tube without the stop clamp 200, the operator can conveniently install the infusion tube between the first clamping portion 132 and the second clamping portion 317.

[0073] It should be noted that in the initial state, the preset elastic force of the first elastic member 151 (i.e., the tension spring 152) is much greater than the elastic force of the second elastic member 153 (i.e., the torsion spring 154). After the first end 131 of the stop wrench 134 is lifted, the support member 135 can rotate under the action of the torsion spring 154 to support the stop wrench 134 and can separate the first clamping portion 132 and the second clamping portion 317 without other external forces because: the line connecting the rotation point of the support member 135 and the limit platform 143 is located on the side of the vertical line passing through the rotation point close to the first end 131, so that even if the stop wrench 134 provides downward pressure on the support member 135, the limit platform 143 abuts against the front side wall of the limit groove 142, and the support member 135 will not rotate in the second direction, thereby achieving stable support.

[0074] It should also be noted that, due to the presence of the housing 110, the stop wrench 134 will not fall out of the limit slot 142 when the stop wrench 134 is manually lifted to the highest position. Specifically, the lifting height of the stop wrench 134 can be limited by setting the size of the opening 112 and setting the limit.

[0075] Please refer to Figures 1 to 17 Further, the two-in-one stopper 100 further includes a push rod 170, one end of which is rotatably connected to the support member 135, and the other end of which extends out of the housing 110. Pressing the push rod 170 can drive the support member 135 to rotate along the first direction to release the support member 135 from supporting the stopper wrench 134.

[0076] In this embodiment, a push rod 170 is provided, and the push rod 170 is rotatably connected to the support member 135 , so that it is convenient to push the support member 135 to rotate in the second direction to release the support for the stop wrench 134 .

[0077] Further, the rear end plate 311 is provided with an extension hole corresponding to the push rod 170, and the front end of the push rod 170 extends out of the rear end plate 311 through the extension hole.

[0078] Further, the tailgate 330 is provided with a first protrusion 331, and the first protrusion 331 is correspondingly arranged with the first end 131. When the tailgate 330 is closed, the first protrusion 331 can support the first end 131 from the bottom of the first end 131.

[0079] When used in cooperation with an infusion tube without a clamp 200, first lift the stop fluid wrench 134 (since the stop fluid wrench 134 will remain in the lifted state due to the support of the support member 135), then place the infusion tube between the first clamping portion 132 and the second clamping portion 317. After closing the tailgate 330, it is necessary to push the push rod 170 inward so that the support member 135 rotates in the first direction until the connection line between the rotation point of the support member 135 and the limit platform 143 turns to the side close to the second end 136 of the perpendicular line passing through the rotation point of the support member 135, so that the support member 135 releases the support for the stop fluid wrench 134 and drops. Then, close the tailgate 330 again. During the closing process of the tailgate 330, the first end 131 of the stop fluid wrench 134 will overlap on the first protrusion 331, and the stop fluid wrench 134 will be lifted as the tailgate 330 is closed. After the tailgate 330 is completely closed, due to the large elastic force of the tension spring 152, the first end 131 overlaps on the first protrusion 331, and the tension spring 152 can overcome the elastic force of the torsion spring 154 and press the support member 135 so that the support member 135 has a tendency to rotate in the first direction, and the first end 131 and the first protrusion 331 are kept in an abutting state. After the tailgate 330 is opened next time, the stop fluid wrench 134 will rotate in the second direction under the action of the tension spring 152 and press the support member 135 to rotate in the first direction, so that the first clamping portion 132 approaches the second clamping portion 317 to clamp the infusion tube.

[0080] When used in cooperation with the infusion tube with the liquid stop clamp 200, during the closing process of the tailgate 330, the first protrusion 331 will abut against the bottom surface of the first end 131 of the liquid stop wrench 134, and the first end 131 of the liquid stop wrench 134 will be lifted as the tailgate 330 closes. At the same time, the tailgate 330 will also push the liquid stop clamp 200 to move, and then the liquid stop clamp 200 will push the support member 135 to rotate in the first direction. After the tailgate 330 is opened, the first end 131 of the liquid stop wrench 134 loses the external force support of the first protrusion 331 and will rotate in the second direction under the action of the tension spring 152. At the same time, it presses the support member 135 to rotate in the first direction and applies pressure to the liquid stop clamp 200 to close the liquid stop clamp 200. When the tailgate 330 is fully opened and the liquid stop clamp 200 needs to be taken out, the first end 131 of the liquid stop wrench 134 can be manually lifted. At this time, the support member 135 will rotate in the second direction under the action of the torsion spring 154 and push out the liquid stop clamp 200, so as to facilitate taking out the liquid stop clamp 200.

[0081] Furthermore, the end face of the first protrusion 331 is a slope, the convex height at the bottom is relatively high, and the convex height at the top is relatively low, so as to realize guiding and lifting the first end 131 when closing the tailgate 330. It can also avoid abutting against the end face of the first end 131 and causing interference. The first protrusion 331 can be trapezoidal or triangular.

[0082] Furthermore, the tailgate 330 is also provided with a second protrusion 333. The second protrusion 333 is configured to push the liquid stop clamp 200 to open when closing the tailgate 330.

[0083] Specifically, the second protrusion 333 corresponds to the position of the second elastic arm 270 after the second protrusion 333 and the liquid stop clamp 200 are inserted into the insertion groove 133. During the closing process of the tailgate 330, the second protrusion 333 will abut against the tail end of the second elastic arm 270 and push the second elastic arm 270 to deform, so that the clamping portion 271 and the limiting portion 231 are disengaged from the clamping.

[0084] It should be noted that the number of the second protrusions 333 can be set according to the structure of the second elastic arm 270, such as one, two or more.

[0085] Further, the first clamping portion 132 has a connected first bottom surface 144 and a first inclined surface 145. The first bottom surface 144 is a flat surface. The first inclined surface 145 is located on one side of the first clamping portion 132 and is inclined relative to the first bottom surface 144 so that the first clamping portion 132 becomes thinner in the direction of the first bottom surface 144. The second clamping portion 317 is provided with a cutting groove 319. The cutting groove 319 has a connected second bottom surface 321 and a second inclined surface 323. The second inclined surface 323 is located on the side of the second bottom surface 321 close to the first inclined surface 145, and the inclination direction of the second inclined surface 323 is the same as the inclination direction of the first inclined surface 145. The first bottom surface 144 corresponds to the second bottom surface 321, and the first inclined surface 145 corresponds to the second inclined surface 323.

[0086] In this embodiment, setting the first clamping portion 132 and the second clamping portion 317 as the above structures can avoid the problem of liquid leakage caused by damage to the infusion tube during the clamping process.

[0087] Further, a third protrusion 335 is provided at a position corresponding to the push rod 170 on the inner side of the tailgate 330. When the tailgate is closed, the third protrusion 335 can press the push rod to rotate the support member 135 in the first direction, so that the support of the stop liquid wrench by the support member can be released. And it can assist in pushing the support member 135 to rotate, making the operation more convenient.

[0088] Further, the two-in-one stop liquid device 100 further includes a position detection sensor 190. The support member 135 is provided with a detection portion 146. The position detection sensor 190 is disposed on the housing 110 and corresponds to the detection portion 146. After the support member 135 is rotated in the first direction to a preset position, the detection portion 146 is located in the detection area of the position detection sensor 190.

[0089] In this embodiment, by setting the detection sensor, linkage control can be achieved. For example, when the detection sensor detects that the support member 135 rotates to a preset angle, the working states of other electric control components such as the peristaltic pump are automatically controlled, and manual operation is not required, making the control more convenient.

[0090] In this embodiment, the detection sensor is a photoelectric door sensor, which has a transmitting end 191 and a receiving end 193 that are spaced apart and oppositely arranged. An insertion hole 115 is provided on the side wall of the housing. The photoelectric door sensor is installed outside the housing, and the transmitting end 191 and the receiving end 193 extend into the housing through the insertion hole 115. The light-shielding portion is a light-shielding plate 147 provided on the side of the support member 135 away from the insertion slot 133. After the support member 135 rotates in the first direction until the light-shielding plate 147 extends between the transmitting end 191 and the receiving end 193 to achieve light shielding, it is detected by the photoelectric door sensor.

[0091] Of course, in some other embodiments of the present application, the detection sensor can also be a proximity sensor or other types of sensors that can meet the usage requirements.

[0092] In summary, the infusion pump 300 provided in this embodiment can not only meet the use of the infusion tube with the liquid stop clamp 200, but also meet the use of the ordinary infusion tube without the liquid stop clamp 200, thus improving the versatility. Most importantly, the two-in-one liquid stop device 100 of the infusion pump 300 provided in this embodiment has a simple structure and convenient operation.

[0093] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention.

Claims

1. A two-in-one liquid stop device, applied to an infusion pump, characterized in that, Comprising: A housing (110) provided with an installation cavity (111), and an opening (112) is formed on one side of the installation cavity (111); A linkage member (130) rotatably installed in the installation cavity (111), and having a first end (131) extending out of the opening (112). A first clamping portion (132) is provided on the side wall of the first end (131). The first clamping portion (132) is configured to cooperate with a second clamping portion (317) of the infusion pump to clamp an infusion tube. A plugging slot (133) is further provided on one side of the linkage member (130) located at the opening (112). The plugging slot (133) is configured to plug a stop clamp (200) of an infusion tube with a stop clamp (200); A reset member (150), the reset member (150) is provided on the linkage member (130) to drive the linkage member (130) to rotate; When cooperating with an infusion tube with a stop clamp (200): The stop clamp (200) is inserted into the plugging slot (133). When the tail gate (330) of the infusion pump is closed, it can push the stop clamp (200) to open and at the same time drive the linkage member (130) to rotate in a first direction; When the tail gate (330) is opened, the reset member (150) can drive the linkage member (130) to rotate in a second direction to apply pressure to the stop clamp (200) to close the stop clamp (200); When cooperating with an infusion tube without a stop clamp (200): First, arrange the infusion tube between the first clamping portion (132) and the second clamping portion (317), and close the tail gate (330) of the infusion pump; During the opening process of the tail gate (330), the reset member (150) can drive the linkage member (130) to rotate in the second direction to clamp the infusion tube between the first clamping portion (132) and the second clamping portion (317); Wherein, the first direction and the second direction are opposite.

2. The two-in-one liquid stop device according to claim 1, characterized in that, The linkage member (130) includes a stop clamp wrench (134) and a support member (135); One end of the stop clamp wrench (134) is the first end (131), and the other end is a second end (136). The second end (136) is rotatably installed in the installation cavity (111), and the first end (131) extends out of the opening (112). The first clamping portion (132) is provided on the side wall of the stop clamp wrench (134) near the first end (131); The support member (135) is rotatably installed in the installation cavity (111), and is located at the bottom of the stop clamp wrench (134), and can abut against the stop clamp wrench (134); The plugging slot (133) is provided on one side of the support member (135) corresponding to the opening (112), and the top penetrates through the support member (135), enabling the stop clamp (200) inserted into the plugging slot (133) to abut against the stop clamp wrench (134); The reset member (150) is connected to the stop clamp wrench (134) and / or the support member (135); The reset member (150) can drive the liquid stop wrench (134) to rotate in the second direction when the rear door (330) of the infusion pump is opened; During the process of lifting the liquid stop wrench (134), the reset member (150) can drive the support member (135) to rotate in the second direction to support the liquid stop wrench (134) so that the liquid stop wrench (134) is maintained in the lifted state.

3. The two-in-one liquid stopping device according to claim 2, wherein, The reset member (150) includes a first elastic member (151); The first elastic member (151) is disposed on the liquid stop wrench (134), and one end of the first elastic member (151) acts on the liquid stop wrench (134), and the other end acts on the housing (110); When the rear door (330) of the infusion pump is opened, the first elastic member (151) can drive the liquid stop wrench (134) to rotate in the second direction.

4. The two-in-one liquid stopping device according to claim 3, wherein, The first elastic member (151) is a tension spring (152), one end of the tension spring (152) is connected to the liquid stop wrench (134), and the other end of the tension spring (152) is connected to the housing (110).

5. The two-in-one liquid stopping device according to claim 3 or 4, wherein The reset member (150) further includes a second elastic member (153); The second elastic member (153) is disposed on the support member (135), and one end acts on the support member (135), and the other end acts on the housing (110); During the process of lifting the liquid stop wrench (134), the second elastic member (153) can drive the support member (135) to rotate in the second direction to support the liquid stop wrench (134); The elastic force of the first elastic member (151) is greater than the elastic force of the second elastic member (153); During the process of opening the rear door (330), the liquid stop wrench (134) can apply a pressure to the support member (135) under the action of the first elastic member (151) so that the support member (135) overcomes the elastic force of the second elastic member (153) and rotates in the first direction.

6. The two-in-one liquid stopping device according to claim 5, wherein The second elastic member (153) is a torsion spring (154); The support member (135) is rotatably mounted in the installation cavity (111) through a rotating shaft (140) and is connected to the housing (110); The support member (135) is provided with an assembly portion (141) corresponding to the rotating shaft (140), the torsion spring (154) is mounted on the assembly portion (141), and one end of the torsion spring (154) abuts against the support member (135), and the other end abuts against the housing (110).

7. The two-in-one liquid stopping device according to claim 5, wherein A limiting groove (142) is provided on one side of the liquid stop wrench (134) close to the support member (135), and a limiting platform (143) is provided on one side of the support member (135) close to the liquid stop wrench (134), and the limiting platform (143) extends into the limiting groove (142); During the process of lifting the liquid stop wrench (134), the support member (135) can rotate in the second direction under the action of the second elastic member (153) so that the limiting platform (143) abuts against the front side wall of the limiting groove (142) and forms a support for the liquid stop wrench (134), and a gap is formed between the first clamping portion (132) and the second clamping portion (317).

8. The two-in-one liquid stopping device according to claim 7, wherein, The two-in-one liquid stop device further includes a push rod (170). One end of the push rod (170) is rotatably connected to the support member (135), and the other end extends out of the housing (110). Pressing the push rod (170) can drive the support member (135) to rotate in the first direction, so that the support member (135) releases the support for the liquid stop wrench (134).

9. The two-in-one liquid stopping device according to any one of claims 2-4, characterized in that The two-in-one liquid stop device further includes a position detection sensor (190). The support member (135) is provided with a detection portion (146). The position detection sensor (190) is arranged on the housing (110) and corresponds to the detection portion (146). After the support member (135) rotates in the first direction to a preset position, the detection portion (146) is located in the detection area of the position detection sensor (190).

10. The two-in-one liquid stopping device according to any one of claims 2-4, characterized in that, On one side of the liquid stop wrench (134) close to the support member (135), a mating groove (137) is provided. The mating groove (137) corresponds to and communicates with the insertion groove (133), and the liquid stop clip (200) can be inserted into the insertion groove (133) and the mating groove (137).

11. An infusion pump, characterized in that, It includes an infusion pump body (310), a tail door (330) and the two-in-one liquid stop device according to any one of claims 1-10. The two-in-one liquid stop device is arranged in the infusion pump body (310), and a notch (313) corresponding to the opening (112) is provided at the tail of the infusion pump body (310), and the first end (131) extends out of the infusion pump body (310) through the notch (313). The second clamping portion (317) is arranged on the infusion pump body (310) and corresponds to the first clamping portion (132). The tail door (330) is rotatably installed on one side of the infusion pump body (310) where the notch (313) is provided.

12. The infusion pump according to claim 11, characterized in that, The first clamping portion (132) has a connected first bottom surface (144) and a first inclined surface (145). The first bottom surface (144) is a plane. The first inclined surface (145) is located on one side of the first clamping portion (132) and is inclined relative to the first bottom surface (144) so that the first clamping portion (132) becomes thinner in the direction of the first bottom surface (144). The second clamping portion (317) is provided with a cutting groove (319), the cutting groove (319) has a connected second bottom surface (321) and a second inclined surface (323), the second inclined surface (323) is located on a side of the second bottom surface (321) close to the first inclined surface (145), and the inclination direction of the second inclined surface (323) is the same as that of the first inclined surface (145), the first bottom surface (144) corresponds to the second bottom surface (321), and the first inclined surface (145) corresponds to the second inclined surface (323).

13. The infusion pump according to claim 11, characterized in that, The tailgate (330) is provided with a first protrusion (331) and a second protrusion (333), the first protrusion (331) corresponds to the first end (131), and when the tailgate (330) is closed, the first protrusion (331) can support the first end (131) from the bottom of the first end (131). The second protrusion (333) is configured to push the liquid stop clip (200) to open when the tailgate (330) is closed.

14. The infusion pump according to claim 13, wherein, The end face of the first protrusion (331) is provided with a guiding inclined surface, and during the closing process of the tailgate (330), the end of the first end (131) can cooperate with the guiding inclined surface to rotate the linkage member (130) in the first direction and lift it.

Images