A buckle structure of an infusion pump

Abstract

The utility model relates to medical instrument technical field provides a kind of infusion pump buckling structure, including pump head subassembly and medicine box subassembly, the pump head subassembly is by pump head upper shell, pump head lower shell and bottom plate constitute, the medicine box subassembly is by medicine box constitute, it is characterized in that, key end buckle module and pull end buckle module are installed in the pump head upper shell, safety lock module is installed in the pump head lower shell, the key end buckle module is composed of pin A, buckle, key and torsional spring, the pull end buckle module is composed of fixed block A, handle, clamping hook, fixed block B, pin B, pin C and screw B, the safety lock module is composed of safety lock spring, safety sheet, button switch, safety lock fixed block, safety lock telescopic block, fixed screw and telescopic block spring constitute. When triple anti-misoperation structure of pull end buckle end is opened simultaneously, can guarantee medicine box normal drop, reduce the risk of misoperation medicine box drop, and practicality is stronger.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an infusion pump fastening structure. Background Technology

[0002] Infusion pumps are commonly used to inject drugs or medications into patients. They typically require a high degree of precision and the ability to control the flow rate.

[0003] However, when the existing fastening structure achieves a flow rate accuracy of ±10%, it is prone to flow rate instability, loose connection between the cartridge and the pump head, and susceptibility to external factors, which interfere with the accuracy of the flow rate. Furthermore, the existing fastening structure is prone to accidental activation, which can cause the pump head to separate from the cartridge due to the patient's mistake, resulting in termination of infusion or change of infusion status. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a fastening structure for an infusion pump to address the shortcomings of the existing technology.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An infusion pump locking structure includes a pump head assembly and a medicine box assembly. The pump head assembly includes a pump head shell, a pump head lower shell, and a base plate. The medicine box assembly includes a medicine box. The pump head shell includes a pull-out end buckle and a key end buckle, and the pump head lower shell includes a safety lock.

[0006] As a further improvement of this utility model, the lifting end buckle includes a fixing block A, a handle, a hook, a fixing block B, a pin B, a pin C, a screw B, a positioning hole B, and a screw positioning hole B, and the key end buckle includes a pin A, a buckle, and a torsion spring.

[0007] As a further improvement of this utility model, the safety lock includes a safety lock spring, a safety plate, a push-button switch, a safety lock fixing block, a safety lock telescopic block, and a fixing screw. The safety lock and the lifting end buckle work together to fasten the medicine box.

[0008] As a further improvement of this utility model, the upper end of the medicine box is provided with a medicine box hook and a medicine box latch.

[0009] As a further improvement of this utility model, the key end buckle also includes a key for use. The lower inner side of the key insertion port on the pump head shell is provided with a positioning step. The pin A passes through the buckle and the torsion spring and is hinged to the key end buckle groove on the pump head shell. The key is horizontally inserted into the shell through the key end buckle insertion port. After one end of the key contacts the buckle, the buckle is subjected to a force inward into the shell. At this time, the medicine box hook separates from the lower end of the buckle. After the key is rotated 90°, the positioning step contacts and fixes the protruding part of the key insertion end. At this time, the key end buckle and the medicine box are in a disassembled state.

[0010] As a further improvement of this utility model, the fixing block A includes a threaded hole and a positioning hole A, and the fixing block B includes a screw positioning hole A and a positioning post.

[0011] As a further improvement of this utility model, the pump head shell is provided with a positioning groove, the fixing block A is placed in the positioning groove of the pump head shell, the positioning post of the fixing block B is inserted into the positioning hole B and reaches the positioning hole A, and the screw B passes through the screw positioning hole A, the screw positioning hole B and the threaded hole in sequence to fix the fixing block B to the lifting end buckle end of the pump head shell.

[0012] As a further improvement of this utility model, the handle is connected to the fixed block B via pin C, and the hook is connected to the handle via pin B. The handle, hook, and fixed block B together form a vertically rotatable structure.

[0013] As a further improvement of this utility model, the safety lock is placed in the lower housing of the pump head above the pull-up end buckle. The safety lock spring acts between the lower housing of the pump head and the safety plate, so that the safety plate can move up and down in the direction of the safety lock spring by the elastic force of the safety lock spring. The push-button switch is below the safety plate. The push-button switch is opposite to the inclined surface of the safety lock telescopic block. The safety lock telescopic block cooperates with the safety lock fixing block through the telescopic block spring.

[0014] As a further improvement of this utility model, when the push button switch and the inclined surface of the safety lock telescopic block are opposite each other, they are placed together inside the lower housing of the pump head, and the safety lock fixing block is fixed inside the lower housing of the pump head by fixing screws, so that the safety lock is stable.

[0015] As a further improvement of this utility model, when the safety lock and the lifting end buckle work together to fasten the medicine box, they are both in a locked state. When the safety plate is pulled upward, the safety lock spring is compressed, and the safety plate is in an unlocked state. When the button switch is pressed into the housing, the button switch pushes the safety lock telescopic block to compress the telescopic block spring and move it into the safety lock fixing block. At this time, the safety lock telescopic block is in an unlocked state. Rotating the handle drives the hook to unlock the contact end with the medicine box hook, realizing the disassembly function.

[0016] The beneficial effects of this utility model are: 1. The lifting end buckle and safety lock of this utility model work together to fasten the medicine box. The lifting end buckle is equipped with a triple anti-accidental contact structure of safety plate, button switch and handle. After the safety plate is pulled up, the action of pressing the button switch inward towards the inside of the shell is unlocked. After the safety lock telescopic block is subjected to the force of the button switch inward towards the inside of the shell, it compresses the telescopic block spring and moves into the inside of the safety lock fixing block. At this time, the safety lock telescopic block moves upward, and the triple anti-accidental contact structure opens at the same time, and the medicine box falls off normally, reducing the risk of accidental contact causing the medicine box to fall off.

[0017] 2. The pull-out buckle of this utility model, after the hook is connected to the medicine box hook, pulls the handle upward to lock the safety lock telescopic block on the handle. This connection method is tight and effectively eliminates the influence of different medicine box assemblies on the flow rate, making the performance of the infusion pump more stable, ensuring the accuracy of the infusion volume and the safety of the patient. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Appendix Figure 1 This is an exploded view of the fastening structure of an infusion pump.

[0020] Appendix Figure 2 This is an installation diagram of the key end buckle module.

[0021] Appendix Figure 3 This is an installation diagram of the lifting end buckle module.

[0022] Appendix Figure 4 This is a cross-sectional view of the safety lock module.

[0023] Appendix Figure 5 This is an assembly diagram of the fastening structure of an infusion pump, including a key-end latching module and a lifting-end latching module.

[0024] Appendix Figure 6 This is an assembly diagram of the fastening structure of an infusion pump, including a lifting end snap-fit ​​module.

[0025] In the diagram: 1 is the lower housing of the pump head, 2 is the upper housing of the pump head, 3 is the medicine box, 4 is the base plate, 11 is the safety lock spring, 12 is the safety plate, 13 is the push-button switch, 14 is the safety lock fixing block, 15 is the telescopic block, 16 is the fixing screw, 17 is the telescopic block spring, 21 is pin A, 22 is the buckle, 23 is the key, 24 is the fixing block A, 241 is the positioning groove, 25 is the handle, 26 is the hook, 261 is pin B, 27 is the fixing block B, 271 is screw B, 2711 is screw positioning hole A, 2712 is the threaded hole, 2713 is screw positioning hole B, 272 is pin C, 273 is positioning hole A, 274 is positioning hole B, 275 is the positioning post, 28 is the torsion spring, 31 is the medicine box hook, and 32 is the medicine box latch. Detailed Implementation

[0026] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] like Figure 1-4 As shown, an infusion pump fastening structure includes a pump head assembly and a medicine box assembly. The pump head assembly includes a pump head shell 2, a pump head lower shell 1, and a base plate 4. The medicine box assembly includes a medicine box 3. The pump head shell 2 includes a pull-out end buckle and a key end buckle, and the pump head lower shell 1 includes a safety lock.

[0028] In one specific embodiment, the lifting end buckle further includes a fixing block A24, a handle 25, a hook 26, a fixing block B27, a pin B261, a pin C272, a screw B271, a positioning hole B274 and a screw positioning hole B2713, and the key end buckle includes a pin A21, a buckle 22 and a torsion spring 28.

[0029] In one specific embodiment, the safety lock further includes a safety lock spring 11, a safety plate 12, a push-button switch 13, a safety lock fixing block 14, a safety lock telescopic block 15, and a fixing screw 16. The safety lock and the lifting end buckle work together to fasten the medicine box 3.

[0030] In one specific embodiment, the upper end of the medicine box 3 is provided with a medicine box hook 31 and a medicine box latch 32.

[0031] In one specific embodiment, the key end buckle further includes a key 23 for use with it. The lower end of the key 23 insertion port of the pump head shell 2 is provided with a positioning step 231. The pin A21 passes through the buckle 22 and the torsion spring 28 and is hinged to the key end buckle groove of the pump head shell 2.

[0032] In one specific embodiment, the fixing block A24 further includes a threaded hole 2712 and a positioning hole A273, and the fixing block B27 includes a screw positioning hole A2711 and a positioning post 275.

[0033] In a specific embodiment, the pump head shell 2 is further provided with a positioning groove 241, the fixing block A24 is placed in the positioning groove 241 of the pump head shell 2, the positioning post 275 of the fixing block B27 is inserted into the positioning hole B274 and reaches the positioning hole A273, and the screw B271 passes through the screw positioning hole A2711, the screw positioning hole B2713 and the threaded hole 2712 in sequence to fix the fixing block B27 to the lifting end buckle end of the pump head shell 2.

[0034] In one specific embodiment, the handle 25 is further connected to the fixing block B27 via pin C272, and the hook 26 is connected to the handle 25 via pin B261. The handle 25, the hook 26, and the fixing block B27 together form a vertically rotatable structure.

[0035] In one specific embodiment, the safety lock is further placed in the lower housing 1 of the pump head above the lifting end buckle. The safety lock spring 11 acts between the lower housing 1 of the pump head and the safety plate 12, so that the safety plate 12 can move up and down in the direction of the safety lock spring 11 by the elastic force of the safety lock spring 11. The push-button switch 13 is below the safety plate 12. The push-button switch 13 is opposite to the inclined surface of the safety lock telescopic block 15. The safety lock telescopic block 15 cooperates with the safety lock fixing block 14 through the telescopic block spring 17.

[0036] In one specific embodiment, the safety lock fixing block 14 is further fixed to the inside of the pump head lower shell 1 by fixing screws 16.

[0037] like Figure 5 As shown, in a specific embodiment, further, when the medicine box and pump head are installed together, the medicine box 3 is pushed upward, and the medicine box hook 32 contacts the key end buckle 22. The key end buckle 22 first retracts under the force of the inclined plane, and then returns to its original position under the action of the torsion spring 28, so that the medicine box hook 32 and the key end buckle 22 are engaged. The lifting end buckle module hook 26 rotates into the bend of the medicine box hook 31. At this time, the handle 25 rotates upward and contacts the "D" face of the telescopic block 15. It continues to rotate to make the telescopic block 15 retract upward. Then, under the force of the telescopic block spring 17, it restores and locks the handle 25, so that it can no longer rotate or move. At this time, the medicine box and pump head are engaged.

[0038] In a specific embodiment, further, when disassembling the medicine box, the key end buckle is disassembled, and the key 23 is horizontally inserted into the housing through the key end buckle insertion port. After one end of the key 23 contacts the buckle 22, the buckle 22 is subjected to a force inward towards the housing, and the buckle 22 moves inward towards the housing limit position. At this time, the medicine box hook 32 separates from the lower end of the buckle 22. Then, the key 23 is rotated 90°, and the protruding part on one side of the key 23 can be fixed by the positioning step 231, so that the buckle 22 is in the open state after being disengaged from the medicine box hook 32, and the medicine box can be detached. When the pump head is disengaged, the safety lock and the lifting end buckle work together to lock the medicine box 3. When the lifting end buckle is disassembled, first pull the safety plate 12 upward, compressing the safety lock spring 11. At this time, the safety plate 12 is in the unlocked state. Then, press the button switch 13 into the housing. The button switch 13 pushes the safety lock telescopic block 15 to compress the telescopic block spring 17 and move it into the safety lock fixing block 14. At this time, the safety lock telescopic block 15 is in the unlocked state. Finally, rotate the handle 25 to unlock the contact end of the hook 26 with the medicine box hook 31, thus realizing the disassembly function.

[0039] like Figure 6 As shown, an infusion pump fastening structure is an improvement on the original design, which consists of a key-end fastening module and a pull-end fastening module on both sides of the pump head. The key-end fastening module is eliminated, and only the pull-end fastening module is used. This design further ensures a better fit between the medicine box and the pump head, thus enhancing the aforementioned effects.

[0040] It is understood that the above specific description of this utility model is only used to illustrate this utility model and is not limited to the technical solutions described in the embodiments of this utility model. Those skilled in the art should understand that modifications or equivalent substitutions can still be made to this utility model to achieve the same technical effect; as long as the use needs are met, they are all within the protection scope of this utility model.

[0041] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. An infusion pump fastening structure, comprising a pump head assembly and a medicine box assembly, wherein the pump head assembly comprises a pump head upper shell (2), a pump head lower shell (1), and a base plate (4), and the medicine box assembly comprises a medicine box (3), characterized in that, The pump head shell (2) includes a lifting end buckle and a key end buckle, and the pump head lower shell (1) includes a safety lock; The lifting end buckle includes a fixing block A (24), a handle (25), a hook (26), a fixing block B (27), a pin B (261), a pin C (272), a screw B (271), a positioning hole B (274), and a screw positioning hole B (2713). The safety lock includes a safety lock spring (11), a safety plate (12), a push button switch (13), a safety lock fixing block (14), a safety lock telescopic block (15), and a fixing screw (16). The safety lock and the lifting end buckle work together to fasten the medicine box (3).

2. The infusion pump fastening structure according to claim 1, characterized in that, The key end buckle includes pin A (21), buckle (22), and torsion spring (28).

3. The infusion pump fastening structure according to claim 2, characterized in that, The medicine box (3) is provided with a medicine box hook (31) and a medicine box latch (32) at the upper end.

4. The infusion pump fastening structure according to claim 3, characterized in that, The key end buckle also includes a key (23) for use. The lower end of the key (23) insertion port of the pump head shell (2) is provided with a positioning step (231). The pin A (21) passes through the buckle (22) and the torsion spring (28) and is hinged to the key end buckle slot of the pump head shell (2). The key (23) is inserted horizontally into the shell through the key end buckle insertion port. After one end of the key (23) contacts the buckle (22), the buckle (22) is subjected to a force towards the inside of the shell. At this time, the medicine box hook (32) separates from the lower end of the buckle (22). After the key (23) is rotated 90°, the positioning step (231) contacts the protruding part of the key (23) insertion end and fixes it. At this time, the key end buckle and the medicine box (3) are in a disassembled state.

5. The infusion pump fastening structure according to claim 2, characterized in that, The fixing block A (24) includes a threaded hole (2712) and a positioning hole A (273), and the fixing block B (27) includes a screw positioning hole A (2711) and a positioning post (275).

6. The infusion pump fastening structure according to claim 5, characterized in that, The pump head shell (2) is provided with a positioning groove (241). The fixing block A (24) is placed in the positioning groove (241) of the pump head shell (2). The positioning post (275) of the fixing block B (27) is inserted into the positioning hole B (274) and reaches the positioning hole A (273). The screw B (271) passes through the screw positioning hole A (2711), the screw positioning hole B (2713) and the threaded hole (2712) in sequence to fix the fixing block B (27) to the lifting end buckle end of the pump head shell (2).

7. The infusion pump fastening structure according to claim 6, characterized in that, The handle (25) is connected to the fixing block B (27) via pin C (272), and the hook (26) is connected to the handle (25) via pin B (261). The handle (25), hook (26) and fixing block B (27) together form a vertically rotatable structure.

8. The infusion pump fastening structure according to claim 1, characterized in that, The safety lock is placed in the lower housing (1) of the pump head above the lifting end buckle. The safety lock spring (11) acts between the lower housing (1) of the pump head and the safety plate (12), so that the safety plate (12) can move up and down in the direction of the safety lock spring (11) by the elastic force of the safety lock spring (11). The push button switch (13) is below the safety plate (12). The push button switch (13) is opposite to the inclined surface of the safety lock telescopic block (15). The safety lock telescopic block (15) cooperates with the safety lock fixing block (14) through the telescopic block spring (17).

9. The infusion pump fastening structure according to claim 8, characterized in that, The safety lock fixing block (14) is fixed inside the pump head lower shell (1) by fixing screws (16). When the safety lock and the lifting end buckle work together to fasten the medicine box (3), they are in a locked state. When the safety plate (12) is pulled up, the safety lock spring (11) is compressed. At this time, the safety plate (12) is in an unlocked state. Press the button switch (13) inside the shell. The button switch (13) pushes the safety lock telescopic block (15) to compress the telescopic block spring (17) and move it into the safety lock fixing block (14). At this time, the safety lock telescopic block (15) is in an unlocked state. Rotate the handle (25) to unlock the contact end of the hook (26) with the medicine box hook (31) and realize the disassembly function.

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