Safety self-control handle for infusion pump

Abstract

This utility model discloses a safety self-control handle for an infusion pump, including a pipeline comprising a flow-limiting tube, a reservoir, and an elastic tube; a pipeline groove is formed on the lower shell; the upper and lower shells are rotatably connected, with a pressure plate at the left end and a pressing part at the right end of the upper shell, and a first limiting member; a pressure plate is slidably connected to the lower shell, and a second limiting member is provided on the pressure plate; a reset component is used to provide a reset force for the upper shell to rotate counterclockwise; during the assembly stage, the pressure plate slides to the right to engage the second and first limiting members, restricting the rotation of the upper shell, and the pressure plate moves away from the high-resilience tube; during the preparation stage, the pressure plate slides to the left to disengage the second and first limiting members, restoring the device to normal operating status; during the medication addition stage, the pressing part moves down, and the upper shell rotates clockwise to compress the reservoir, at which time the internal flow path of the high-resilience tube opens, and the medication in the reservoir flows through the high-resilience tube into the human body. In this utility model, the pressure plate protects the high-resilience tube from compression during long-term storage.

Description

Technical Field

[0001] This utility model relates to the field of automatic control pipeline technology for infusion pumps, and in particular to a safety automatic control handle for infusion pumps. Background Technology

[0002] Disposable infusion pumps are currently a commonly used infusion tool for postoperative analgesia in clinical practice. They utilize the elastic recoil of a silicone reservoir and a precision flow-limiting device to achieve micro-volume, precise infusion, ensuring accurate dosage and safe delivery to the patient. The medication in the infusion pump is delivered to the patient through two lines: one for a continuous, constant-rate infusion of anesthetic medication, and the other for patients to adjust via a self-regulating handle to increase the infusion rate when experiencing pain, thereby relieving pain and achieving an analgesic effect.

[0003] The utility model patent with publication number CN205041889U discloses a self-controlled liquid dispensing device for a disposable infusion pump, including a pipeline assembly. The pipeline assembly includes a flow-limiting inlet pipe, a large high-elasticity pipe, a small high-elasticity pipe, and an outlet pipe, wherein the large high-elasticity pipe is pressed against the lower part of the button assembly.

[0004] However, the existing devices have complicated piping connections and are prone to leakage during use, which endangers patient safety.

[0005] The utility model patent with publication number CN209864871U discloses a disposable portable infusion pump dosing device for use between an infusion tube and a flow-limiting tube with a flow rate of 0.5 ml / 15 min. The rocker arm is connected to an elastic element that contacts the inner wall of the housing and a tip that contacts the elastic tube at one end away from the flow-limiting tube.

[0006] However, in the use of the above-mentioned devices, the tip that contacts the elastic tube may not spring back after being squeezed for a long time, resulting in the tube not flowing back. Secondly, the pressing area of ​​the self-control handle that contacts the finger is small, which is not ergonomic and makes it difficult to press. Utility Model Content

[0007] This invention aims to solve the problem in the prior art where the pressing area of ​​the self-control handle in contact with the fingers is small, which is not ergonomic and makes it difficult to press and operate.

[0008] This invention further solves the problem in the prior art where the automatic control pipeline of the infusion pump is affected by the long-term squeezing of the handle, thus affecting the flow path of the pump.

[0009] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0010] A safety self-control handle for an infusion pump, comprising:

[0011] The pipeline includes a flow-limiting tube, a reservoir, and an elastic tube connected sequentially from right to left;

[0012] The lower shell has a pipe groove arranged in the left-right direction and adapted to the pipe, and the pipe is arranged in the pipe groove;

[0013] The upper shell is arranged above the lower shell along the left-right direction and is rotatably connected to the lower shell. A downwardly extending pressure plate is provided at the left end of the rotation axis of the upper shell, and a downwardly protruding pressing part is provided at the right end of the rotation axis of the upper shell. The upper shell is provided with a first limiting member.

[0014] A pressing plate, wherein the pressing plate is slidably connected to the lower shell in the left-right direction, and the pressing plate is provided with a second limiting member that cooperates with the first limiting member;

[0015] A reset assembly, the reset assembly being used to provide a reset force for counterclockwise rotation of the upper housing;

[0016] Assembly stage: The pressure plate slides to the side closer to the upper shell so that the second limiting member and the first limiting member cooperate to restrict the upper shell from rotating counterclockwise. The pressure plate moves away from the high resilience tube, and the high resilience tube is in a released state without being squeezed.

[0017] Preparation stage: The tablet is slid to the side away from the upper shell to disengage the second limiting member from the first limiting member, the upper shell rotates counterclockwise, the pressure plate squeezes the high resilience tube, the internal flow path of the high resilience tube is closed, and the pressing part is away from the liquid storage bladder.

[0018] Additional dosage stage: The pressing part moves down, the upper shell rotates clockwise, the pressing part squeezes the reservoir, the pressure plate moves away from the high-resilience tube, the internal flow path of the high-resilience tube opens, and the liquid in the reservoir flows through the high-resilience tube into the human body.

[0019] Preferably, the first limiting member includes a limiting hole disposed in the middle of the pressure plate;

[0020] The pressure plate is located on the left side of the upper shell, and the second limiting member includes a support rod extending to the right at the right end of the pressure plate. The support rod can be inserted into the limiting hole to limit the rotation of the lower shell.

[0021] Preferably, the upper surface of the upper shell has a large end composed of curves on the right and a long strip composed of smoothly connected curves on the left, with the large end corresponding to the pressing part.

[0022] Preferably, the reset assembly includes a silicone bundle disposed on the left side of the rotation center axis of the upper shell, and the silicone bundle is sleeved on the outside of the upper shell and the lower shell.

[0023] Preferably, the lower end face of the lower shell is provided with a first limiting groove arranged in the front-back direction corresponding to the silicone bundle, and the upper end face of the upper shell is provided with a second limiting groove arranged in the front-back direction corresponding to the silicone bundle.

[0024] Preferably, the upper end of the lower shell is provided with an upwardly extending protective shell corresponding to the outer periphery of the upper shell, which is used to prevent accidental pressing of the upper shell from squeezing the liquid storage bladder.

[0025] Preferably, a rotating support is provided on both the front and rear sides of the lower shell corresponding to the upper shell;

[0026] A swivel support is provided at the middle of the lower end of the upper shell, and the swivel support and the swivel base are rotatably connected.

[0027] Preferably, the upper end of the rotating hole of the rotating support is provided with an opening, and the upper edges on the left and right sides of the opening are provided with clearance grooves.

[0028] The rotary support includes a rotary support column extending downward from the lower end of the upper shell, and the lower end face of the support column is an arc-shaped surface that matches the rotary hole of the rotary support.

[0029] Preferably, the lower shell is provided with a bayonet;

[0030] The tablet press is equipped with a latch that engages with a slot on the lower shell;

[0031] When the tablet slides to the leftmost end, the latch and the bayonet form a latching connection to restrict the left and right movement of the tablet.

[0032] Preferably, the bayonet includes a guide groove horizontally arranged on the front and rear shells of the lower shell along the left and right direction, a guide slope is provided on the leftmost side of the guide groove, and a buckle groove is provided on the left side of the guide groove for engagement and connection.

[0033] The buckle includes buckles that extend downward from the lower end of the pressure plate and are arranged symmetrically front and back, with barbs at the ends of the buckles.

[0034] Preferably, the lower shell is provided with a sliding groove arranged in a horizontal direction;

[0035] The lower end of the tablet press is equipped with a sliding buckle, which slides in conjunction with the slide groove to allow the tablet press to slide left and right along the lower shell.

[0036] Preferably, the sliding groove includes a sliding groove horizontally arranged along the left-right direction on the front and rear shells of the lower shell;

[0037] The sliding buckle is an "L"-shaped structure extending downward from the lower end of the pressure plate. The sliding buckles are arranged symmetrically at the front and back. The lower ends of the symmetrically arranged sliding buckles are respectively provided with sliders extending horizontally forward and backward. The sliding buckles achieve sliding engagement through the sliders and the sliding grooves.

[0038] Preferably, the front and rear sides of the lower shell are provided with assembly grooves extending from their upper end faces to their lower end faces, and the left end face of the assembly groove is connected to the right end of the guide groove and the slide groove.

[0039] Preferably, the pipeline further includes a first connector, a second connector, and a transition pipe, with the flow-limiting pipe, transition pipe, reservoir, first connector, high-resilience pipe, and second connector connected sequentially from right to left.

[0040] The beneficial effects of this utility model are:

[0041] 1. The right side of the upper shell has a curved profile, which corresponds to the pressing part. The left side is a long strip with a smooth curve transition, which is easy to hold and press, and conforms to ergonomics.

[0042] 2. The support rod is inserted into the limiting hole to restrict the upper shell from rotating counterclockwise. The pressure plate is away from the high resilience tube, and the high resilience tube is in a released state without being squeezed, ensuring that the silicone tube can still be used normally during long-term storage.

[0043] 3. The rotating hole of the rotating support has an opening at the upper end, which can be directly inserted into the lower end face of the rotating support column. Then, the silicone bundle is placed on the outside of the upper and lower shells, which simplifies the entire assembly process and improves assembly efficiency.

[0044] 4. The pressure plate slides along the left and right direction to connect with the lower shell. Sliding the pressure plate away from the upper shell causes the support rod and the limiting hole to disengage. The upper shell rotates counterclockwise, and the pressure plate squeezes the high-resilience tube. By simply sliding the pressure plate, this utility model can be quickly converted from the assembly state to the use state, which is convenient and quick to operate. In addition, the lower shell is provided with a bayonet, and the pressure plate is provided with a buckle that cooperates with the bayonet on the lower shell. When the pressure plate slides to the leftmost end, the buckle and the bayonet form a buckle connection to restrict the left and right movement of the pressure plate and ensure the normal use of this utility model. Attached Figure Description

[0045] Figure 1 This is a three-dimensional view of the pipeline structure in this utility model;

[0046] Figure 2 This is a three-dimensional structural diagram of the present invention after assembly;

[0047] Figure 3 This is a three-dimensional structural diagram of the present invention during the preparation stage;

[0048] Figure 4 This is a three-dimensional structural diagram of the additional medicine liquid stage of this utility model;

[0049] Figure 5 This is an exploded schematic diagram of this utility model;

[0050] Figure 6This is a top view of the lower shell of the safety self-control handle in this utility model;

[0051] Figure 7 This is a schematic diagram of the upper three-dimensional structure of the lower shell in this utility model. Figure 1 ;

[0052] Figure 8 yes Figure 7 Enlarged view of point A in the middle;

[0053] Figure 9 This is a schematic diagram of the upper three-dimensional structure of the lower shell in this utility model. Figure 2 ;

[0054] Figure 10 yes Figure 9 Enlarged view of point B in the middle;

[0055] Figure 11 This is a frontal three-dimensional structural diagram showing the connection relationship between the lower shell and the pipeline in this utility model;

[0056] Figure 12 This is a frontal three-dimensional structural diagram of the upper shell in this utility model;

[0057] Figure 13 This is a top-view three-dimensional structural diagram of the upper shell in this utility model;

[0058] Figure 14 This is a frontal three-dimensional structural diagram of the tablet compression device in this utility model;

[0059] Figure 15 This is a front view of the tablet press in this utility model;

[0060] Figure 16 This is a top-view three-dimensional structural diagram of the tablet compression device in this utility model;

[0061] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. Detailed Implementation

[0062] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0063] like Figure 1-16 As shown, a safety self-control handle for an infusion pump includes a lower shell 3, in which a pipeline is arranged in the left-right direction. An upper shell 1, which rotates along a vertical plane, is rotatably connected to the right side of the lower shell 3. A reset assembly and a pressure plate 4 for limiting the reset of the upper shell 1 are connected between the upper shell 1 and the lower shell 3.

[0064] The pipeline includes a flow-limiting tube 27, a reservoir 25, and a high-resilience tube connected sequentially from right to left. In this embodiment, the pipeline also includes a first connector, a second connector, and a transition tube 26. The left end of the flow-limiting tube 27 is connected to the right end of the transition tube 26. The left end of the transition tube 26 is connected to the right end of the reservoir 25. The left end of the reservoir 25 is connected to the right end of the first connector. The left end of the first connector is connected to the right end of the high-resilience tube. The left end of the high-resilience tube is connected to the right end of the second connector. The left end of the second connector is connected to the right end of the infusion tube 21.

[0065] Transition pipe 26 is used to better connect pipes of different diameters and materials.

[0066] To ensure reliable and convenient connection, in this embodiment, the first connector is a first two-way connector 24, the second connector 22 is a second two-way connector 22, and the left end interface of the reservoir 25 and the right end interface of the first two-way connector 24 are bonded and fixed.

[0067] To ensure high resilience, in this embodiment, the high resilience tube material is silicone tube 23. When silicone tube 23 is squeezed, the internal flow path is blocked. When silicone tube 23 is released, it returns to its original shape and the internal flow path is opened. The left end of silicone tube 23 is sleeved on the right end of the second two-way valve 22, and the right end of silicone tube 23 is sleeved on the left end of the first two-way valve 24.

[0068] The lower shell 3 is a shell structure with an opening at the top and symmetrical front and back. The lower shell 3 has a pipe groove 31 arranged in the left and right direction and extending downward from its upper end for placing the infusion pump self-control pipeline 2. In this embodiment, the pipe groove 31 includes an infusion tube clamping groove 311, a second two-way clamping groove 312, a silicone tube placement groove 313, a first two-way clamping groove 314, a reservoir placement groove 315, a transition tube clamping groove 316, and a flow limiting tube clamping groove 317 arranged sequentially from the left end face to the right end face of the lower shell 3. The infusion tubing slot 311 is U-shaped, and the infusion tubing 21 and the infusion tubing slot 311 are press-fitted. The second two-way slot 312 and the second two-way valve 22 are matched in shape. The second two-way slot 312 includes a two-way boss slot 3121, and the second two-way valve 22 and the second two-way slot 312 are press-fitted. The silicone tube placement slot 313 has a rectangular longitudinal section, and the silicone tube 23 is housed in the silicone tube placement slot 313. The first two-way slot 312... 14 and the first two-way valve 24 are compatible in shape, and the first two-way valve slot 314 and the first two-way valve 24 are interference fit; the liquid storage bladder placement slot 315 and the liquid storage bladder 25 are compatible, and the liquid storage bladder 25 is housed in the liquid storage bladder placement slot 315; the transition tube slot 316 is "U" shaped, and the transition tube 26 and the transition tube slot 316 are interference fit; the flow limiting tube slot 317 is "U" shaped, and the flow limiting tube 27 and the flow limiting tube slot 317 are interference fit.

[0069] The upper end of the lower shell 3 is provided with an upwardly extending protective shell corresponding to the outer periphery of the upper shell 1, which is used to prevent the upper shell 1 from being accidentally pressed and squeezed into the liquid storage bladder 25. In this embodiment, the protective shell includes a protective shell 36. The protective shell 36 starts from the rotation axis of the lower shell 3 corresponding to the upper shell 1 and extends to the right and gradually upward. The protective shell 36 is symmetrically distributed along the central axis of the pipeline groove 31.

[0070] Rotary supports 34 are provided on both the front and rear sides of the lower shell 3 corresponding to the upper shell 1. The rotating supports 34 are rotatably connected to the upper shell 1. In this embodiment, in order to facilitate assembly and manufacturing, the upper end of the rotating hole of the rotating support 34 is provided with an opening. In order to avoid interference during rotation, the upper edges on the left and right sides of the opening are provided with clearance grooves.

[0071] The lower shell 3 is provided with a bayonet for the pressure plate 4 to slide to the leftmost end and form a snap-fit ​​connection with the lower shell 3. In this embodiment, the bayonet includes a guide groove 32 horizontally arranged on the front and rear shells of the lower shell 3 along the left-right direction. A guide slope is provided on the leftmost side of the guide groove 32, and a slot for engaging the snap-fit ​​connection is provided on the left side of the guide groove 32. Further, the slot is a two-way boss slot 3121, and the two-way boss slot 3121 and the guide groove 32 form the bayonet.

[0072] The lower shell 3 is provided with a sliding groove for keeping the lower shell 3 sliding horizontally. In this embodiment, the sliding groove includes a sliding groove 37 on the front and rear shells of the lower shell 3, located at the lower end of the guide groove 32 and parallel to the guide groove 32.

[0073] To facilitate the assembly of the tablet 4 onto the lower shell 3, the front and rear sides of the lower shell 3 are provided with assembly grooves 33 extending from their upper end faces to their lower end faces, and the left end face of the assembly groove 33 is connected to the right end of the guide groove 32 and the slide groove 37.

[0074] The upper shell 1 is positioned above the lower shell 3 along the left-right direction and is rotatably connected to the lower shell 3. A rotational support is provided at the middle of the lower end of the upper shell 1 to form a rotational fit with the lower shell 3. In this embodiment, the rotational support includes a rotational support column 14 extending downward from the lower end of the upper shell 1. The lower end surface of the support column 14 is an arc-shaped surface that matches the rotation hole of the rotational support 34.

[0075] The upper shell 1 has a downwardly extending pressure plate 13 at the left end, which serves as an actuator to squeeze or release the high resilience tube by rotating in the vertical plane to control the flow path inside.

[0076] The upper shell 1 is provided with a first limiting member that cooperates with the pressure plate 4 to limit the counterclockwise rotation of the upper shell 1. In this embodiment, the first limiting member includes a limiting hole 12 provided in the middle of the pressure plate 13.

[0077] The upper shell 1 has a downward protruding pressing part 15 at the right end. The lower end of the pressing part 15 is adapted to the shape of the liquid storage bladder 25 and is used to squeeze or release the liquid storage bladder 25 when rotated.

[0078] The upper surface of the upper shell 1 has a large end composed of curves on the right and a long strip composed of smooth transitions of curves on the left. The large end corresponds to the pressing part 15.

[0079] The pressure plate 4 has a symmetrical structure. A second limiting member is provided on the pressure plate 4 to cooperate with the first limiting member to form a limiting mechanism to restrict the rotation of the upper shell 1. In this embodiment, the second limiting member includes a support rod 41 extending to the right at the right end of the pressure plate 4. The support rod 41 cooperates with the limiting hole 12 and can be inserted into the limiting hole 12 to restrict the rotation of the lower shell 3.

[0080] The lower end of the pressure plate 4 is provided with symmetrically arranged sliding buckles 42, which slide in conjunction with the sliding groove 37 to enable the pressure plate 4 to slide left and right on the lower shell 3. In this embodiment, the sliding buckles 42 are "L"-shaped structures extending downward from the lower end of the pressure plate 4. The lower ends of the symmetrically arranged sliding buckles 42 are respectively provided with sliders 421 extending horizontally forward and backward. The sliding buckles 42 slide in conjunction with the sliding groove 37 through the sliders 421.

[0081] The pressure plate 4 is also provided with a buckle that cooperates with the latch on the lower shell 3. The buckle and the latch form a buckle connection to restrict the left and right movement of the pressure plate 4. In this embodiment, the buckle includes a buckle 44 that extends downward from the lower end of the pressure plate 4 and is arranged symmetrically front and back. The end of the buckle 44 is provided with a barb 441. The buckle 44 undergoes elastic deformation under the guidance of the guide slope of the guide groove 32. The barb 441 is engaged with the right end face of the two-way boss groove 3121, thereby restricting the left and right movement of the pressure plate 4.

[0082] A reset assembly is disposed between the lower shell 3 and the upper shell 1 to provide a reset force for the upper shell 1 to rotate counterclockwise. In this embodiment, the reset assembly includes a silicone bundle 5 disposed on the left side of the rotating support column 14, and the silicone bundle 5 is sleeved on the outside of the upper shell 1 and the lower shell 3.

[0083] Furthermore, in order to limit the relative sliding of the silicone bundle 5 relative to the upper shell 1 and the lower shell 3, a first limiting groove 38 is provided on the lower end face of the lower shell 3 corresponding to the silicone bundle 5, and a second limiting groove 11 is provided on the upper end face of the upper shell 1 corresponding to the silicone bundle 5, which is also provided in the front-back direction.

[0084] The two-way valve, transition pipe 26, and flow restrictor 27 are all existing technologies, and their specific structures are irrelevant to the present invention, so they will not be described in detail here.

[0085] The working process of this utility model is as follows:

[0086] like Figure 2 As shown, the assembly stage:

[0087] ① Connect both ends of the infusion pump self-control line 2 to the infusion pipe, and then put the infusion pump self-control line 2 into the corresponding pipe groove 31. At this time, the infusion pump self-control line 2 has been fixed in the lower shell 3.

[0088] ② Align the sliding buckle 42 of the pressure plate 4 with the assembly groove 33 and insert it downwards. Then align the slider 421 of the sliding buckle 42 with the groove 37 and insert it into the groove 37. Slide the pressure plate 4 to the left through the anti-slip groove 43, but do not snap it into the lower shell 3.

[0089] ③ Align the support column 14 of the upper shell 1 with the rotating support 34 of the lower shell 3 to form a rotational fit.

[0090] ④ Slide the pressure plate 4 to the right so that the support rod 41 is aligned with the limiting hole 12 of the upper shell 1 and inserted. At this time, the pressure plate 13 of the upper shell 1 does not squeeze the silicone tube 23.

[0091] ⑤ The silicone bundle 5 is fitted onto the outside of the upper shell 1 and the lower shell 3, and corresponds to the first limiting groove 38 and the second limiting groove 11. The silicone bundle 5 generates a tightening force, causing the upper shell 1 to rotate counterclockwise.

[0092] like Figure 3 As shown, the preparation stage:

[0093] ① After the medical staff opened the outer packaging bag, they slid the pressure plate 4 to the left, so that the support rod 41 was disengaged from the limiting hole 12 of the upper shell 1. The silicone bundle 5 generated a tightening force, causing the upper shell 1 to rotate counterclockwise. The pressure plate 13 of the upper shell 1 squeezed the silicone tube 23, thereby blocking the silicone tube 23.

[0094] ② Continue to slide the tablet 4 to the left. The buckle 44 of the tablet 4 slides to the left along the guide groove 32 until the buckle 44 passes the guide slope set on the leftmost side of the guide groove 32. Under the guidance of the guide slope of the guide groove 32, the buckle 44 undergoes elastic deformation. The barb 441 is engaged in the right end face of the two-way boss groove 3121, thereby restricting the left and right movement of the tablet 4. The tablet 4 is no longer used.

[0095] ③ The liquid medicine passes through the flow limiting tube 27 and the transition tube 26 in sequence and enters the reservoir 25.

[0096] like Figure 4 As shown, the additional dosage stage:

[0097] ① When the patient experiences pain, pressing the upper end face of the pressing part 15 of the upper shell 1 with their finger causes the upper shell 1 to rotate clockwise around the central axis of the rotating hole of the rotating support 34. As the pressing part 15 rotates, it squeezes the reservoir 25. The pressing part 15 and the reservoir 25 are adapted to the shape of the finger, making it easier to press.

[0098] ② When the pressing part 15 rotates and squeezes the reservoir 25, the pressure plate 13 of the upper shell 1 no longer squeezes the silicone tube 23. Therefore, the internal channel of the infusion pump's self-controlled pipeline 2 is open, and the medication in the reservoir 25 flows to the infusion tube 21 and is delivered to the patient, thereby achieving an analgesic effect. In addition, the inner diameter of the flow-limiting tube 26 is extremely small. When the reservoir 25 is squeezed, most of the medication flows to the infusion tube 21, and very little medication returns to the flow-limiting tube 26, thus ensuring the amount of medication delivered to the patient.

[0099] The above embodiments are only used to illustrate and not limit the technical solutions of this utility model. Although the utility model has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the utility model without departing from the spirit and scope of the utility model. Any modifications or partial substitutions should be covered within the scope of the claims of this utility model.

[0100] If the terms "first" or "second" are used in this document to define the components, those skilled in the art should know that the use of "first" or "second" is merely for the convenience of describing this utility model and simplifying the description, and unless otherwise stated, the above terms have no special meaning.

[0101] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0102] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0103] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A safety override handle for an infusion pump, comprising: include: The pipeline includes a flow-limiting tube, a reservoir, and an elastic tube connected sequentially from right to left; The lower shell has a pipe groove arranged in the left-right direction and adapted to the pipe, and the pipe is arranged in the pipe groove; The upper shell is arranged above the lower shell along the left-right direction and is rotatably connected to the lower shell. A downwardly extending pressure plate is provided at the left end of the rotation axis of the upper shell, and a downwardly protruding pressing part is provided at the right end of the rotation axis of the upper shell. The upper shell is provided with a first limiting member. A pressing plate, wherein the pressing plate is slidably connected to the lower shell in the left-right direction, and the pressing plate is provided with a second limiting member that cooperates with the first limiting member; A reset assembly, the reset assembly being used to provide a reset force for counterclockwise rotation of the upper housing; Assembly stage: The pressure plate slides to the side closer to the upper shell so that the second limiting member and the first limiting member cooperate to restrict the upper shell from rotating counterclockwise. The pressure plate moves away from the high resilience tube, and the high resilience tube is in a released state without being squeezed. Preparation stage: The tablet is slid to the side away from the upper shell to disengage the second limiting member from the first limiting member, the upper shell rotates counterclockwise, the pressure plate squeezes the high resilience tube, the internal flow path of the high resilience tube is closed, and the pressing part is away from the liquid storage bladder. Additional dosage stage: The pressing part moves down, the upper shell rotates clockwise, the pressing part squeezes the reservoir, the pressure plate moves away from the high-resilience tube, the internal flow path of the high-resilience tube opens, and the liquid in the reservoir flows through the high-resilience tube into the human body.

2. A safety handle for an infusion pump as defined in claim 1, characterized in that The first limiting member includes a limiting hole provided in the middle of the pressure plate; The pressure plate is located on the left side of the upper shell, and the second limiting member includes a support rod extending to the right at the right end of the pressure plate. The support rod can be inserted into the limiting hole to limit the rotation of the lower shell.

3. A safety handle for an infusion pump as defined in claim 1, wherein The upper surface of the upper shell has a large end composed of curves on the right and a long strip composed of smoothly connected curves on the left, with the large end corresponding to the pressing part.

4. A safety handle for an infusion pump as defined in claim 1, wherein, The reset assembly includes a silicone bundle disposed on the left side of the rotation center axis of the upper shell, and the silicone bundle is stretched and sleeved on the outside of the upper and lower shells.

5. A safety handle for an infusion pump as defined in claim 4, wherein, The lower end face of the lower shell is provided with a first limiting groove arranged in the front-to-back direction corresponding to the silicone bundle, and the upper end face of the upper shell is provided with a second limiting groove arranged in the front-to-back direction corresponding to the silicone bundle.

6. A safety handle for an infusion pump as defined in claim 1, wherein, The upper end of the lower shell is provided with an upwardly extending protective shell corresponding to the outer periphery of the upper shell, which is used to prevent accidental pressing of the upper shell from squeezing the liquid storage bladder.

7. A safety handle for an infusion pump as defined in claim 1, wherein, Rotary supports are provided on both the front and rear sides of the lower shell corresponding to the upper shell in the middle. A swivel support is provided at the middle of the lower end of the upper shell, and the swivel support and the swivel base are rotatably connected.

8. A safety self-control handle for an infusion pump as described in claim 7, characterized in that, The rotating support has an opening at the top of the rotating hole, and clearance grooves are provided on the upper edges of the left and right sides of the opening. The rotary support includes a rotary support column extending downward from the lower end of the upper shell, and the lower end face of the support column is an arc-shaped surface that matches the rotary hole of the rotary support.

9. A safety self-control handle for an infusion pump as described in claim 1, characterized in that, The lower shell is provided with a bayonet; The tablet press is equipped with a latch that engages with a slot on the lower shell; When the tablet slides to the leftmost end, the latch and the bayonet form a latching connection to restrict the left and right movement of the tablet.

10. A safety self-control handle for an infusion pump as described in claim 9, characterized in that, The bayonet includes a guide groove horizontally arranged on the front and rear shells of the lower shell along the left and right direction. A guide slope is provided on the leftmost side of the guide groove, and a buckle groove for engaging with the buckle is provided on the left side of the guide groove. The buckle includes buckles that extend downward from the lower end of the pressure plate and are arranged symmetrically front and back, with barbs at the ends of the buckles.

11. A safety self-control handle for an infusion pump as described in claim 10, characterized in that, The lower shell is provided with a sliding groove arranged in the horizontal direction; The lower end of the tablet press is equipped with a sliding buckle, which slides in conjunction with the slide groove to allow the tablet press to slide left and right along the lower shell.

12. A safety self-control handle for an infusion pump as described in claim 11, characterized in that, The slide groove includes a slide groove horizontally arranged along the left-right direction on the front and rear shells of the lower shell; The sliding buckle is an "L"-shaped structure extending downward from the lower end of the pressure plate. The sliding buckles are arranged symmetrically at the front and back. The lower ends of the symmetrically arranged sliding buckles are respectively provided with sliders extending horizontally forward and backward. The sliding buckles achieve sliding engagement through the sliders and the sliding grooves.

13. A safety self-control handle for an infusion pump as described in claim 12, characterized in that, The lower shell has assembly grooves on its front and rear sides extending from its upper end to its lower end, and the left end of the assembly groove is connected to the right end of the guide groove and the slide groove.

14. A safety self-control handle for an infusion pump as described in any one of claims 1-13, characterized in that, The pipeline also includes a first connector, a second connector, and a transition pipe. The flow limiting pipe, the transition pipe, the liquid reservoir, the first connector, the high resilience pipe, and the second connector are connected sequentially from right to left.

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