Medical pump and medical infusion system

Abstract

The application discloses a medical pump and a medical infusion system. The medical pump comprises a shell, a fixing component, a pump body and a roller assembly. The fixing component is arranged on the shell and is used for fixing a liquid pipeline. The pump body is arranged in the shell. An output shaft of the pump body is provided with a threaded hole. The roller assembly comprises a rolling component and a screwing piece. The rolling component is at least partially arranged outside the shell and is sleeved on the output shaft. The screwing piece is arranged in the rolling component and is screwed to the threaded hole to fix the rolling component on the output shaft. When the output shaft drives the rolling component to rotate, the rolling component can extrude the liquid pipeline fixed by the fixing component to drive the liquid in the liquid pipeline to flow. The medical pump has the advantage that the rolling component is not easy to be damaged.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and more particularly to a medical pump and a medical infusion system. Background Technology

[0002] For peristaltic infusion medical devices, such as nutrition pumps and uterine distension pumps, they typically consist of a pump body and rollers, with the rollers mounted on the output shaft of the pump body. Furthermore, when the pump body drives the rollers to rotate, the rollers can compress the fluid tubing to deliver the fluid.

[0003] In related technologies, the roller is usually first fitted onto the output shaft, and then a screw is inserted through the roller and pressed against the outer circumference of the output shaft to fix the roller to the output shaft. However, in the field of infusion pumps, the rollers are all made of plastic, which makes the rollers relatively weak; therefore, during the operation of the pump body, the area of ​​the roller that mates with the screw is prone to cracking. Summary of the Invention

[0004] This application provides a medical pump and a medical infusion system to address the technical problem of rolling parts being prone to cracking.

[0005] In a first aspect, embodiments of this application provide a medical pump, comprising:

[0006] case;

[0007] A fixing component is disposed on the housing and is used to fix the liquid pipeline;

[0008] A pump body, the pump body portion being disposed inside the housing, the output shaft of the pump body passing through the housing and partially extending to the outside of the housing, the end of the output shaft located outside the housing having a threaded hole; and,

[0009] A roller assembly includes a rolling element and a threaded connector. The rolling element is at least partially located outside the housing and sleeved on the output shaft. The threaded connector passes through the rolling element and is screwed into the threaded hole to fix the rolling element to the output shaft. When the output shaft drives the rolling element to rotate, the rolling element can squeeze the liquid pipeline fixed by the fixing element to drive the liquid flow in the liquid pipeline.

[0010] In some embodiments, the rolling component includes a main body portion sleeved on the output shaft, and the threaded member passes through the main body portion and is threaded to the threaded hole to fix the rolling component to the output shaft;

[0011] Wherein, the main body is a plastic part; and / or,

[0012] The output shaft is a metal part, the material of the main body is different from that of the output shaft, and the hardness of the main body is lower than that of the output shaft.

[0013] In some embodiments, the opening of the threaded hole is located on the peripheral surface of the output shaft.

[0014] In some embodiments, the rolling component is provided with a first mounting hole, the output shaft passes through the first mounting hole, and the peripheral surface of the output shaft is provided with a flat portion, which abuts against the inner peripheral surface of the first mounting hole to restrict the rotation of the rolling component relative to the output shaft.

[0015] The opening of the threaded hole is located at the flat position.

[0016] In some embodiments, the number of the flat positions is at least two, and at least two of the flat positions are arranged radially symmetrically along the output shaft;

[0017] The threaded hole is a through hole, and the openings at both ends of the threaded hole are located at the flat position.

[0018] In some embodiments, one end of the screw connector is screwed to the output shaft, and the other end of the screw connector engages with the flat fitting to clamp the rolling component.

[0019] In some embodiments, the threaded hole extends axially along the output shaft.

[0020] In some embodiments, the screw connector passes through the rolling member from the side of the rolling member away from the housing and is screwed to the threaded hole;

[0021] The roller assembly further includes a shield, which includes at least one of a decorative element and a logo. The shield is disposed on the rolling component and shields the end of the screw member away from the housing.

[0022] In some embodiments, the rolling component is provided with a first mounting hole, the output shaft passes through the first mounting hole, and the peripheral surface of the output shaft is provided with a flat portion, which abuts against the inner peripheral surface of the first mounting hole to restrict the rotation of the roller relative to the output shaft.

[0023] In some embodiments, one end of the screw connector is screwed to the output shaft, and the other end of the screw connector engages with the axial end face of the output shaft to clamp the rolling component.

[0024] In some embodiments, the rolling component includes a first mounting hole through which the output shaft passes;

[0025] The peripheral surface of the output shaft is provided with at least two flat sections, which abut against the inner peripheral surface of the first mounting hole to restrict the rotation of the rolling component relative to the output shaft.

[0026] In some embodiments, one end of the screw connector is screwed to the output shaft, and the other end of the screw connector engages with the outer surface of the output shaft to clamp the rolling component.

[0027] In some embodiments, the rolling component includes:

[0028] A roller, the roller being sleeved on the output shaft, and a threaded connector passing through the roller and screwed into the threaded hole to fix the rolling component to the output shaft; and,

[0029] At least two rotating members are rotatably mounted on the roller, and the at least two rotating members are circumferentially spaced around the roller; when the output shaft drives the roller to rotate, the rotating members can squeeze the liquid pipeline fixed by the fixed component to drive the liquid flow in the liquid pipeline.

[0030] In some embodiments, the roller includes a first flange and a second flange spaced apart along the axial direction of the output shaft. The first flange is located on the side of the roller away from the housing. The first flange is provided with a second mounting hole, which is a blind hole with its opening facing the second flange.

[0031] The rolling component further includes a mounting member, one end of which passes through the second flange and the other end of which is fixed in the second mounting hole. The rotating component is rotatably sleeved on the mounting member.

[0032] In some embodiments, the fixing member includes a first surface and a second surface disposed opposite to each other, the second surface being located on the side of the fixing member facing the roller assembly;

[0033] The fixing component is also provided with at least two third mounting holes, which extend from the first surface to the second surface and are used to install and fix the liquid pipeline.

[0034] Secondly, embodiments of this application also provide a medical infusion system, comprising:

[0035] Such as the medical pumps mentioned above; and,

[0036] A liquid conduit for mounting and fixing to the fixed component and for winding around the rolling component.

[0037] The beneficial effects of the embodiments of this application are as follows:

[0038] Compared to the method where the screw connector merely abuts against the outer surface of the output shaft to fix the rolling component to the output shaft, the embodiments of this application fix the rolling component to the output shaft by screwing the screw connector into the threaded hole of the output shaft. This can improve the phenomenon of stress concentration on the rolling component when the medical pump is working, thereby improving the technical problem of the rolling component being prone to cracking. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0041] Figure 1 This is a schematic diagram of the structure of a medical infusion system according to an embodiment of this application.

[0042] Figure 2 for Figure 1 The medical infusion system shown is a partial cross-sectional view along the AA direction.

[0043] Figure 3 for Figure 2 The diagram shows another output shaft of the medical infusion system.

[0044] Figure 4 for Figure 3 The diagram shows the structure of the shielding component of the medical infusion system.

[0045] Figure 5 for Figure 2 The diagram shows the assembly of the output shaft and roller assembly.

[0046] Figure 6 for Figure 5 The exploded view of the output shaft and roller assembly is shown.

[0047] Explanation of reference numerals in the attached figures:

[0048] 100. Shell;

[0049] 200. Fixing component; 21. First surface; 22. Second surface; 23. Third mounting hole;

[0050] 300. Pump body; 31. Output shaft; 32. Threaded hole; 33. Flat part; 331. First transmission plane; 34. Axial end face;

[0051] 400. Roller assembly; 41. Rolling component; 411. Roller; 4111. First mounting hole; 4111a. Second transmission plane; 4112. First flange; 4112a. Second mounting hole; 4113. Second flange; 412. Rotating component; 413. Mounting component; 42. Threaded connection; 421. Threaded rod; 422. Third flange; 43. Blocking component;

[0052] 500. Liquid piping. Detailed Implementation

[0053] The technical solutions of the embodiments of this application 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 application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0054] Firstly, this application provides a medical pump, which can be an infusion pump such as a nutrition pump or a uterine distension pump, or any other type of medical pump. This application does not limit the specific type of medical pump.

[0055] Please refer to Figure 1 and Figure 2 The medical pump includes a housing 100, a fixed component 200, and a roller assembly 400.

[0056] A fixing component 200 is disposed on the housing 100 and is used to fix the liquid pipeline 500. The pump body 300 is partially disposed inside the housing 100, and the output shaft 31 of the pump body 300 passes through the housing 100 and partially extends to the outside of the housing 100. The end of the output shaft 31 located outside the housing 100 is provided with a threaded hole 32.

[0057] The roller assembly 400 includes a rolling element 41 and a screwed member 42. The rolling element 41 is at least partially located outside the housing 100 and sleeved on the output shaft 31. The screwed member 42 passes through the rolling element 41 and is screwed into the threaded hole 32 to fix the rolling element 41 to the output shaft 31. When the output shaft 31 drives the rolling element 41 to rotate, the rolling element 41 can compress the liquid conduit 500 fixed by the fixing member 200 to drive the liquid flow within the liquid conduit 500.

[0058] Therefore, compared to the screw connector 42 merely abutting against the outer surface of the output shaft 31 to fix the rolling component 41 to the output shaft 31, the embodiment of this application fixes the rolling component 41 to the output shaft 31 by screwing the screw connector 42 to the threaded hole 32 of the output shaft 31, which can improve the phenomenon of stress concentration on the rolling component 41 when the medical pump is working, thereby improving the technical problem that the rolling component 41 is prone to cracking.

[0059] In some embodiments, the rolling component 41 includes a main body that is sleeved on the output shaft 31, and a screw connector 42 that passes through the main body and is screwed to the threaded hole 32 to fix the rolling component 41 to the output shaft 31.

[0060] The main body can be a plastic part, such as a rubber part or any other type of plastic part; this application embodiment does not limit this. Furthermore, the plastic main body allows the rolling component 41 to have the advantage of low cost.

[0061] The output shaft 31 can be made of metal to ensure that it has sufficient rigidity, thereby preventing the long output shaft 31 from wobbling, bending, or even breaking during operation of the pump body 300. The material of the main body is different from that of the output shaft 31, and the hardness of the main body is lower than that of the output shaft 31. This ensures that the output shaft 31 has sufficient rigidity while allowing the main body to be made of a lower-cost material without requiring excessive rigidity.

[0062] For example, the main body can be the aforementioned plastic part. Of course, the main body can also be some metal parts with low hardness or polymer material parts, etc. The embodiments of this application do not limit this.

[0063] It should also be noted that when the hardness of the main body is lower than that of the output shaft 31, the structure of screwing the main body to the output shaft 31 via the screw connector 42 can distribute more of the stress on the roller assembly 400 to the screw connector 42 and the output shaft 31. Since the output shaft 31 has a higher hardness, it is less likely to be damaged. Correspondingly, the stress at the mating point between the main body and the screw connector 42 is reduced to avoid the main body with lower hardness from cracking.

[0064] The above is an overall introduction to the technical solutions of the embodiments of this application.

[0065] In the first opening orientation of the threaded hole 32, the opening of the threaded hole 32 is located on the peripheral surface of the output shaft 31.

[0066] Correspondingly, the screw connector 42 can pass through the outer periphery of the rolling member 41 and be screwed into the threaded hole 32, so that the end of the screw connector 42 away from the threaded hole 32 faces the outer periphery of the rolling member 41. In the actual use of the medical pump, since the liquid pipeline 500 is to be wound around the peripheral surface of the rolling member 41, the peripheral surface of the rolling member 41 is an uncommon surface during operation; therefore, it can also be understood that the end of the screw connector 42 away from the threaded hole 32 is hidden in the uncommon surface of the rolling member 41, which can provide a high degree of protection for the screw connector 42 and improve the aesthetics of the roller assembly 400.

[0067] In some embodiments, the threaded hole 32 can be a blind hole, thereby reducing the size of the opening on the output shaft 31 to avoid the threaded hole 32 being too large, which would reduce the strength of the output shaft 31 and thus prevent the output shaft 31 from wobbling, bending or even breaking when rotating.

[0068] In some other embodiments, the threaded hole 32 may also be a through hole. Therefore, the screw connector 42 may be selectively screwed into the threaded hole 32 from any end of the threaded hole 32 (i.e., different sides of the output shaft 31 in the circumferential direction) according to the actual situation, so as to meet more different installation scenario requirements and improve the versatility of the pump body 300. This application embodiment does not limit this.

[0069] The above is a description of the first opening orientation of the threaded hole 32 in the embodiments of this application.

[0070] Please continue to refer to this. Figure 3 In the second opening orientation of the threaded hole 32, the threaded hole 32 extends axially along the output shaft 31. That is, the opening of the threaded hole 32 is located on the axial end face 34 of the free end of the output shaft 31.

[0071] Correspondingly, the screw connector 42 is inserted through the rolling component 41 on the side of the housing 100 away from the rolling component 41 and is screwed to the threaded hole 32.

[0072] In the actual assembly process, the rolling component 41 can be first fitted onto the output shaft 31, and then the screw connector 42 can be threaded through the rolling component 41 from the side of the rolling component 41 away from the housing 100 and screwed into the threaded hole 32.

[0073] Therefore, during the process of tightening the screw connector 42, the housing 100 is less likely to interfere with the user's hands and tools such as screwdrivers, so that the screw connector 42 has the advantage of being easy to tighten.

[0074] In some embodiments, the end of the screw connector 42 away from the housing 100 (or output shaft 31) is disposed inside the rolling member 41. For example, the screw connector 42 may be a countersunk screw, thereby preventing the end of the screw connector 42 away from the housing 100 (or output shaft 31) from protruding outside the rolling member 41, thus improving the aesthetics of the roller assembly 400.

[0075] Please continue to refer to this. Figure 4In some embodiments, the roller assembly 400 further includes a shield 43, which includes at least one of a decorative element and a marking. The shield is disposed on the rolling member 41 and shields the end of the screw connector 42 that is away from the housing 100 (or output shaft 31). This prevents the end of the screw connector 42 away from the housing 100 (or output shaft 31) from being exposed, thereby improving the aesthetics of the roller assembly 400.

[0076] For example, the shielding element 43 may include a decorative cover, a decorative panel, a knowledge label, etc., which are not limited in this application embodiment.

[0077] The above is a description of the second opening orientation of the threaded hole 32 in the embodiments of this application.

[0078] Please continue to refer to this. Figure 5 and Figure 6 In some embodiments, the rolling component 41 is provided with a first mounting hole 4111, the output shaft 31 passes through the first mounting hole 4111, and the peripheral surface of the output shaft 31 is provided with a flat part 33, which abuts against the inner peripheral surface of the first mounting hole 4111 to restrict the rotation of the rolling component 41 relative to the output shaft 31.

[0079] For example, the flat part 33 may include a first transmission plane 331, and the inner peripheral surface of the first mounting hole 4111 may include a second transmission plane 4111a. The first transmission plane 331 and the second transmission plane 4111a abut against each other to restrict the rotation of the rolling member 41 relative to the output shaft 31.

[0080] Furthermore, as the roller assembly 400 rotates with the output shaft 31, the stress on the roller assembly 400 can be partially distributed to the mating point between the rolling component 41 and the flat part 33 (i.e., the second transmission plane 4111a), thereby further preventing the stress on the rolling component 41 from becoming too concentrated and causing breakage.

[0081] In addition, by providing a flat part 33 on the surface of the output shaft 31, the flat part 33 can also be used as a foolproof structure, thereby avoiding foolproof positioning when the rolling part 41 is sleeved on the output shaft 31, and also facilitating subsequent screwing and fixing after aligning the screwed part 42 with the threaded hole 32 on the output shaft 31.

[0082] The number of flat positions 33 can be one or at least two, such as two, three, four, five, etc. This application does not limit this.

[0083] When there are at least two flat sections 33, there are also at least two second transmission planes 4111a on the inner circumferential surface of the first mounting hole 4111, and the second transmission planes 4111a and flat sections 33 are arranged in a one-to-one correspondence. Therefore, during the rotation of the roller assembly 400 following the output shaft 31, the multiple flat sections 33 can distribute the stress on the roller assembly 400 onto multiple second transmission planes 4111a, thereby avoiding excessive stress concentration on the rolling component 41 and the resulting breakage.

[0084] Taking the case where there are at least two flat positions 33 as an example, the at least two flat positions 33 can be evenly spaced along the circumference of the output shaft 31. Furthermore, as the roller assembly 400 rotates with the output shaft 31, the force on the roller assembly 400 in the circumference of the output shaft 31 is more even and reasonable, so as to avoid the situation where the stress on one side of the roller assembly 400 in the circumference of the output shaft 31 is too concentrated and causes breakage.

[0085] As mentioned above, in some embodiments, the threaded hole 32 extends along the axial direction of the output shaft 31, and the opening of the threaded hole 32 can be located at the flat position 33.

[0086] It is understandable that, compared to using a screw connector 42 for locking at the curved surface of the outer peripheral side of the output shaft 31, the present application embodiment can improve the stability and reliability of the connection between the rolling assembly and the output shaft 31 by locking at the flat part 33 of the output shaft 31 (i.e., at the first transmission plane 331).

[0087] Correspondingly, when the threaded hole 32 is a through hole, there can be at least two flat parts 33 symmetrically arranged radially along the output shaft 31, with the openings at both ends of the threaded hole 32 located at the flat parts 33. Therefore, the screw connector 42 can be selectively screwed into the threaded hole 32 from either end (or different sides of the output shaft 31 in the circumferential direction) according to the actual situation to meet more different installation scenario requirements. This application embodiment does not limit this.

[0088] In some embodiments, one end of the screw connector 42 is screwed and fixed to the output shaft 31, and the other end of the screw connector 42 is engaged with the outer surface of the output shaft 31 to clamp the rolling component 41.

[0089] For example, the screw connector 42 includes a threaded rod 421 and a third flange 422. The threaded rod 421 is screwed into the threaded hole 32, and the third flange 422 protrudes from the outer periphery of the end of the threaded rod 421 away from the threaded hole 32. The third flange 422 engages with the outer surface of the output shaft 31 to clamp and fix the component 200.

[0090] Furthermore, on the one hand, during the rotation of the roller assembly 400 following the output shaft 31, the wobbling of the rolling component 41 can be avoided; on the other hand, during the rotation of the roller assembly 400 following the output shaft 31, the stress of the rolling component 41 can be partially distributed at the mating point of the rolling component 41 and the third flange 422 on the side facing the output shaft 31, and partially distributed at the mating point of the rolling component 41 and the third flange 422 on the side facing the output shaft 31 (i.e., at the second transmission plane 4111a), thereby further dispersing the stress of the rolling component 41 and preventing the rolling component 41 from breaking.

[0091] The screw 42 can be a screw, with the tail of the screw forming a third flange 422.

[0092] When the opening of the threaded hole 32 is located on the circumferential surface of the output shaft 31, one end of the screw connector 42 is screwed and fixed to the output shaft 31, and the other end of the screw connector 42 is engaged with the outer surface of the output shaft 31 to clamp the rolling component 41.

[0093] For example, one end of the screw connector 42 can be screwed to the output shaft 31, and the other end of the screw connector 42 (such as the third flange 422 of the end of the screw connector 42 away from the output shaft 31) can cooperate with the flat part 33 of the output shaft 31 to clamp the rolling component 41.

[0094] Furthermore, during the process of the pump body 300 driving the roller assembly 400 to rotate through the output shaft 31, part of the stress on the rolling component 41 is located at the part where the rolling component 41 and the outer peripheral surface of the screw connector 42 are in contact, part is located at the mating point of the rolling component 41 and the flat part 33 (i.e., at the second transmission plane 4111a), and part is located at the mating point of the rolling component 41 and the side surface of the third flange 422 facing the corresponding flat part 33, thereby improving the problem of stress concentration on the rolling component 41.

[0095] When the threaded hole 32 extends along the axial direction of the output shaft 31, one end of the screw connector 42 is screwed and fixed to the output shaft 31, and the other end of the screw connector 42 (such as the third flange 422 of the end of the screw connector 42 away from the output shaft 31) cooperates with the axial end face 34 of the output shaft 31 to clamp the rolling component 41.

[0096] Furthermore, during the process of the pump body 300 driving the roller assembly 400 to rotate through the output shaft 31, part of the stress on the roller assembly 400 is located at the mating point of the threaded rod 421 and the inner circumferential surface of the threaded hole 32, part is located at the mating point of the rolling component 41 and the axial end face 34 of the output shaft 31, and part is located at the mating point of the rolling component 41 and the side surface of the third flange 422 facing the output shaft 31, thereby improving the problem of stress concentration on the rolling component 41.

[0097] In some embodiments, the rolling component 41 includes a roller 411 and at least two rotating members 412. The roller 411 is sleeved on the output shaft 31, and a threaded member 42 passes through the roller 411 and is screwed to the threaded hole 32 to fix the rolling component 41 to the output shaft 31. The rotating members 412 are rotatably mounted on the roller 411, and at least two rotating members 412 are circumferentially spaced around the roller 411; when the output shaft 31 drives the roller 411 to rotate, the rotating members 412 can compress the liquid conduit 500 fixed by the fixing member 200 to drive the liquid flow within the liquid conduit 500.

[0098] Furthermore, during the process of the rolling component 41 squeezing the liquid pipeline 500, the rolling component 41 can generate rolling friction with the liquid pipeline 500 through the rotating component 412, thereby reducing the friction between the rolling component 41 and the liquid pipeline 500. This allows the pump body 300 to drive the liquid flow in the liquid pipeline 500 more smoothly through the rolling component 41, and also reduces the wear of the liquid pipeline 500 and the rolling component 41, thereby improving the service life of the medical pump.

[0099] In some embodiments, the roller 411 includes a first flange 4112 and a second flange 4113 spaced apart along the axial direction of the output shaft 31. The first flange 4112 is located on the side of the roller 411 away from the housing 100, and the first flange 4112 has a second mounting hole 4112a, which is a blind hole with its opening facing the second flange 4113. The roller assembly 400 also includes a mounting member 413, one end of which passes through the second flange 4113, and the other end of which is fixed in the second mounting hole 4112a. A rotating member 412 is rotatably fitted onto the mounting member 413.

[0100] Therefore, it can be simply understood that the second flange 4113 is located on the side of the first flange 4112 closer to the housing 100. Correspondingly, the second mounting hole 4112a is a blind hole with its opening facing the second flange 4113, which can also be understood as the second mounting hole 4112a being a blind hole with its opening facing the housing 100. In this case, compared to the second mounting hole 4112a being a through hole, the embodiments of this application can use the first flange 4112 and the housing 100 to shield both ends of the mounting member 413, thereby improving the aesthetics of the roller assembly 400 and providing better protection for the mounting member 413.

[0101] Therefore, one assembly process for the roller assembly 400 can be as follows:

[0102] First, the rotating member 412 is positioned between the first flange 4112 and the second flange 4113.

[0103] Then, the mounting part 413 is passed through the second flange 4113 and the rotating part 412 in sequence and connected to the first flange 4112 to realize the assembly of the roller 411, the mounting part 413 and the rotating part 412.

[0104] Next, the roller 411 is fitted onto the end of the output shaft 31 located outside the housing 100.

[0105] Finally, the roller 411 and the output shaft 31 are screwed together and fixed by passing the screw connector 42 through the roller 411.

[0106] In some embodiments, the mounting component 413 may include bolts, rivets, pins, latches, etc., but this application embodiment does not limit this.

[0107] It is also understandable that, as mentioned above, in some embodiments, the rolling component 41 includes a main body that is sleeved on the output shaft 31, and a screw connector 42 that passes through the main body and is screwed to the threaded hole 32 to fix the rolling component 41 to the output shaft 31. Therefore, the main body may be formed by a roller 411.

[0108] In some other embodiments, the rolling component 41 may not be provided with the rotating component 412.

[0109] For example, the rolling component 41 may be provided with a roller 411, and the roller 411 is fixedly provided with at least two protruding structures, which are spaced apart circumferentially along the roller 411. When the output shaft 31 drives the roller 411 to rotate, the protruding structures can squeeze the liquid pipeline 500 fixed by the fixing component 200 to drive the liquid flow in the liquid pipeline 500.

[0110] The protruding structure and the roller 411 can be integrally formed or separately formed; this application embodiment does not limit this.

[0111] The above is a brief introduction to the roller assembly 400 in the embodiments of this application.

[0112] In some embodiments, the fixing member 200 includes a first surface 21 and a second surface 22 disposed opposite to each other, the second surface 22 being located on the side of the fixing member 200 facing the roller assembly 400. The fixing member 200 is also provided with at least two third mounting holes 23 extending from the first surface 21 to the second surface 22, the third mounting holes 23 being used to mount and fix the liquid pipeline 500.

[0113] For example, the liquid line 500 may include an arc-shaped pipe segment that is arranged around the outer periphery of the rolling member 41, with each end of the arc-shaped pipe segment fixed to one of the third mounting holes 23. Therefore, during the process of the pump body 300 driving the rolling member 41 to rotate via the output shaft 31, the rolling member 41 can compress the liquid line 500 fixed by the fixing member 200 to drive the liquid flow within the liquid line 500.

[0114] The fixing component 200 and the housing 100 can be integrally formed or separately formed. This application embodiment does not limit this.

[0115] The fixing component 200 can be disposed on the outer surface of the housing 100.

[0116] Secondly, embodiments of this application also provide a medical infusion system, including a medical pump and a liquid tubing 500. The medical pump is the same as described in the first aspect. The liquid tubing 500 is used to mount and fix to the fixed component 200 and is wound around the rolling component 41.

[0117] Therefore, since the medical pump is the medical pump described in the first aspect, the medical infusion system has the advantage that the rolling part 41 is not easy to crack.

[0118] In some embodiments, the specific structure of the liquid pipeline 500 can be referred to the specific structure of the liquid pipeline 500 described in the first aspect, and will not be repeated here in the embodiments of this application.

[0119] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0120] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0121] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0122] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A medical pump, characterized in that, include: case; A fixing component is disposed on the housing and is used to fix the liquid pipeline; The pump body is partially disposed inside the housing, and the output shaft of the pump body passes through the housing and partially extends to the outside of the housing. The end of the output shaft located outside the housing is provided with a threaded hole. and, A roller assembly, comprising a rolling element and a threaded connector, wherein the rolling element is at least partially located outside the housing and sleeved on the output shaft, and the threaded connector passes through the rolling element and is screwed into the threaded hole to fix the rolling element to the output shaft; When the output shaft drives the rolling component to rotate, the rolling component can squeeze the liquid pipeline fixed by the fixed component to drive the liquid flow in the liquid pipeline.

2. The medical pump according to claim 1, characterized in that, The rolling component includes a main body portion, which is sleeved on the output shaft. The threaded connector passes through the main body portion and is threaded to the threaded hole to fix the rolling component to the output shaft. Wherein, the main body is a plastic part; and / or, The output shaft is a metal part, the material of the main body is different from that of the output shaft, and the hardness of the main body is lower than that of the output shaft.

3. The medical pump according to claim 1, characterized in that, The opening of the threaded hole is located on the peripheral surface of the output shaft.

4. The medical pump according to claim 3, characterized in that, The rolling component is provided with a first mounting hole, the output shaft passes through the first mounting hole, and the peripheral surface of the output shaft is provided with a flat part, which abuts against the inner peripheral surface of the first mounting hole to restrict the rotation of the rolling component relative to the output shaft. The opening of the threaded hole is located at the flat position.

5. The medical pump according to claim 4, characterized in that, The number of the flat positions is at least two, and at least two of the flat positions are arranged symmetrically along the radial direction of the output shaft; The threaded hole is a through hole, and the openings at both ends of the threaded hole are located at the flat position.

6. The medical pump according to claim 4, characterized in that, One end of the screw connector is screwed and fixed to the output shaft, and the other end of the screw connector is engaged with the flat part to clamp the rolling component.

7. The medical pump according to claim 1, characterized in that, The threaded hole extends axially along the output shaft.

8. The medical pump according to claim 7, characterized in that, The screw connector passes through the rolling component from the side of the rolling component away from the housing and is screwed and fixed to the threaded hole; The roller assembly further includes a shield, which includes at least one of a decorative element and a logo. The shield is disposed on the rolling component and shields the end of the screw member away from the housing.

9. The medical pump according to claim 7, characterized in that, The rolling component is provided with a first mounting hole, the output shaft passes through the first mounting hole, and the peripheral surface of the output shaft is provided with a flat part, which abuts against the inner peripheral surface of the first mounting hole to restrict the roller from rotating relative to the output shaft.

10. The medical pump according to claim 7, characterized in that, One end of the screw connector is screwed and fixed to the output shaft, and the other end of the screw connector is engaged with the axial end face of the output shaft to clamp the rolling component.

11. The medical pump according to claim 1, characterized in that, The rolling component includes a first mounting hole, and the output shaft passes through the first mounting hole; The peripheral surface of the output shaft is provided with at least two flat sections, which abut against the inner peripheral surface of the first mounting hole to restrict the rotation of the rolling component relative to the output shaft.

12. The medical pump according to claim 1, characterized in that, One end of the screw connector is screwed and fixed to the output shaft, and the other end of the screw connector is engaged with the outer surface of the output shaft to clamp the rolling component.

13. The medical pump according to any one of claims 1 to 12, characterized in that, The rolling component includes: A roller, the roller being sleeved on the output shaft, and a threaded connector passing through the roller and screwed into the threaded hole to fix the rolling component to the output shaft; and, At least two rotating members are rotatably mounted on the roller, and the at least two rotating members are circumferentially spaced around the roller; when the output shaft drives the roller to rotate, the rotating members can squeeze the liquid pipeline fixed by the fixed component to drive the liquid flow in the liquid pipeline.

14. The medical pump according to claim 13, characterized in that, The roller includes a first flange and a second flange spaced apart along the axial direction of the output shaft. The first flange is located on the side of the roller away from the housing. The first flange is provided with a second mounting hole, which is a blind hole with its opening facing the second flange. The rolling component further includes a mounting member, one end of which passes through the second flange and the other end of which is fixed in the second mounting hole. The rotating component is rotatably sleeved on the mounting member.

15. The medical pump according to any one of claims 1 to 12, characterized in that, The fixing component includes a first surface and a second surface disposed opposite to each other, the second surface being located on the side of the fixing component facing the roller assembly; The fixing component is also provided with at least two third mounting holes, which extend from the first surface to the second surface and are used to install and fix the liquid pipeline.

16. A medical infusion system, characterized in that, include: The medical pump as described in any one of claims 1 to 15; and, A liquid conduit for mounting and fixing to the fixed component and for winding around the rolling component.

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