Medical nursing infusion pump

Abstract

The present invention provides a medical care infusion pump, comprising: a body; a channel tube connected to the body and capable of allowing the infusion tube to pass through; a liquid delivery mechanism, comprising a plurality of groups of pressing components arranged at intervals along the axial direction of the channel tube, the pressing components comprising two sliders slidably connected to the channel tube, the two sliders being able to approach each other to squeeze the infusion tube, or moving away from each other to release the infusion tube; each group of pressing components sequentially squeezes the infusion tube, capable of driving the liquid in the infusion tube to flow in one direction; two liquid delivery mechanisms are provided, and an angle exists between the two liquid delivery mechanisms in the axial projection of the channel tube; a synchronization component capable of driving the slider to slide, so as to drive the two liquid delivery mechanisms to squeeze the infusion tube in turn. The medical care infusion pump of the present invention is not prone to the situation where the infusion tube becomes flat and cannot fully rebound after delivering liquid, which helps to improve the stability of the infusion accuracy of the infusion pump.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a medical care infusion pump. Background Art

[0002] In offshore environments, due to limited medical resources and the unique characteristics of the environment, infusion pumps, as medical care equipment that can precisely control the speed and volume of infusion, are particularly important. They not only improve the efficiency and safety of infusion therapy, but also reduce the workload of medical staff, ensuring that patients receive timely and effective treatment in emergency situations.

[0003] Conventional infusion pumps typically include multiple sliders that slide and squeeze the infusion tube. Driven by a camshaft, each slider sequentially squeezes the tube. The tube wall is flattened when under pressure, and its elastic shape returns to shape when released, effectively pumping the liquid within the tube. However, the harsh offshore environment can cause the tube to age, and the infusion pump typically squeezes the tube in one direction, which can prevent the tube from rebounding to its normal state, resulting in unstable infusion accuracy. Summary of the Invention

[0004] In view of this, the present invention aims to provide a medical care infusion pump to make the infusion accuracy of the infusion pump more stable.

[0005] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0006] A medical care infusion pump, comprising:

[0007] body;

[0008] a channel tube, connected to the body and capable of allowing an infusion tube to pass through;

[0009] The liquid delivery mechanism includes a plurality of pressing assemblies spaced apart along the axial direction of the channel tube, each of the pressing assemblies including two sliders slidably connected to the channel tube, the two sliders being able to move closer to each other to squeeze the infusion tube, or move farther apart to release the infusion tube; each pressing assembly sequentially squeezes the infusion tube to drive a unidirectional flow of liquid within the infusion tube; two liquid delivery mechanisms are provided, and an angle is formed between the axial projections of the two liquid delivery mechanisms along the channel tube;

[0010] The synchronization component can drive the slider to slide, so as to drive the two liquid delivery mechanisms to squeeze the infusion tube in turn.

[0011] Furthermore, an elastic member is provided between the slider and the channel tube, and the elastic member always pushes the slider toward the outside of the channel tube;

[0012] The synchronization assembly includes a synchronization tube and a support block; the synchronization tube is coaxially rotatable and arranged outside the channel tube, and the support block is fixed to the inner wall of the synchronization tube. When the support block rotates with the synchronization tube, it can squeeze and push the slider to squeeze the infusion tube;

[0013] The supporting blocks are grouped into two, and multiple groups are provided along the axial direction of the synchronization tube corresponding to the sliders. The supporting blocks of each group are symmetrically arranged on both sides of the synchronization tube. An angle is provided between the axial projections of the supporting blocks of adjacent groups of the synchronization tube so that each group of pressing components of the same liquid delivery mechanism squeezes the infusion tube in turn.

[0014] Furthermore, a roller is provided on one end of the sliding block facing the synchronization tube, and the roller can roll along the surface of the supporting block to move closer to or away from the infusion tube.

[0015] Furthermore, the roller includes a wheel seat and a wheel body, the wheel seat is fixedly connected to the slider, and the wheel body is rotatably connected to the wheel seat; the elastic member is a spring, one end of which abuts the wheel seat and the other end abuts the outer wall of the channel tube;

[0016] One end of the slider located in the channel tube is provided with a squeezing portion in contact with the infusion tube, and the squeezing portion can restrict the slider from falling out of the channel tube.

[0017] Furthermore, the extrusion portion is a cuboid extending axially along the channel tube.

[0018] Furthermore, the channel tube includes a fixed portion and a movable portion;

[0019] The fixed part and the movable part are both groove-shaped plate structures and can be buckled together to form a tubular structure. The fixed part is fixedly connected to the machine body, and the movable part is detachably connected to the fixed part.

[0020] Furthermore, the movable portion is inserted into the fixed portion along the direction in which it is buckled with the fixed portion.

[0021] Furthermore, a door is hingedly connected to the machine body, and a pressing block is provided on the door. When the door is closed, the pressing block presses the movable part onto the fixed part.

[0022] Furthermore, the medical care infusion pump includes two sets of limit assemblies arranged on the channel tube, and the two sets of limit assemblies are rotatably connected to the two ends of the synchronization tube respectively;

[0023] The synchronization tube is formed by buckling two semicircular arc plates;

[0024] The limiting assembly includes a first limiting member and a second limiting member. The first limiting member is provided on the fixed part, and the second limiting member is provided on the movable part. When the movable part is buckled with the fixed part, the synchronous tube can be restricted to rotate along its own central axis between the first limiting member and the second limiting member.

[0025] Furthermore, the medical care infusion pump includes a driving part and a transmission part arranged on the body;

[0026] The transmission part includes a gear shaft and at least one group of half gear rings; the gear shaft is rotatably connected to the machine body and can be driven to rotate by the driving part, and the half gear rings in the same group are respectively fixed to the two semi-circular arc plates. When the two semi-circular arc plates are buckled, the half gear rings in the same group are spliced into a complete outer gear ring and can engage with the gear shaft.

[0027] Compared with the prior art, the present invention has the following advantages:

[0028] The medical care infusion pump described in the present invention controls the slider through the synchronization component, and the two liquid delivery mechanisms can take turns squeezing the infusion tube to achieve unidirectional pumping of the liquid in the infusion tube. Because the two liquid delivery mechanisms have different squeezing directions on the infusion tube, compared with the existing unidirectional squeezing infusion pump, after delivering the same volume of liquid, it is less likely for the infusion tube to become flat and unable to fully rebound, which helps to improve the stability of the infusion accuracy of the infusion pump.

[0029] Secondly, the elastic member can make the slider stay away from the infusion tube when it is not affected by the supporting block, that is, it does not squeeze the infusion tube; when the synchronous tube rotates so that the supporting block pushes the slider, the slider can be gradually pushed toward the infusion tube to press the infusion tube, and the two symmetrical supporting blocks act on the slider of the same group of pressing components at the same time, so as to achieve the squeezing of the infusion tube; when the synchronous tube continues to rotate and the supporting block is separated from the slider, the slider can be released to separate the slider from the infusion tube.

[0030] Furthermore, the provision of a roller converts the sliding friction between the slider and the support block into rolling friction, enabling the support block to push the slider more smoothly. The provision of a wheel seat provides a position for the spring to act, enabling the spring to push the wheel seat, thereby pressing the wheel body against the inner wall of the support block or the synchronization tube. The provision of the extrusion portion as a rectangular parallelepiped extending axially along the channel tube increases the contact area between the extrusion portion and the infusion tube when squeezing the infusion tube, resulting in a better squeezing effect and higher pumping efficiency.

[0031] Furthermore, the provision of a fixed portion and a movable portion allows the movable portion to be removed when the infusion tube needs to be installed or removed, facilitating its entry and exit. The compression block securely compresses the movable portion, ensuring the connection strength between the movable and fixed portions, preventing the movable portion from separating from the fixed portion during operation. The plug-in connection between the movable and fixed portions simplifies the connection and facilitates installation.

[0032] Furthermore, the limiting assembly not only limits the axial position of the synchronous tube but also maintains the positional relationship between the two semi-circular plates, preventing them from deviating from their position during rotation. The drive unit rotates the gear shaft, which in turn drives the synchronous tube equipped with the half gear ring, enabling the synchronous assembly to control the liquid delivery mechanism. The gear transmission method offers high transmission efficiency, a constant transmission ratio, and a compact structure that takes up little space. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which constitute part of the present invention, are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0034] Figure 1 This is a schematic diagram of the overall structure of a medical care infusion pump according to an embodiment of the present invention;

[0035] Figure 2 An exploded diagram of the connection relationship between the liquid delivery mechanism, the synchronization component, and the limit component according to an embodiment of the present invention;

[0036] Figure 3 for Figure 2 A partial enlarged view of part A in the middle;

[0037] Figure 4 A schematic structural diagram of a driving unit and a transmission unit according to an embodiment of the present invention;

[0038] Figure 5 This is a structural schematic diagram of the liquid delivery mechanism and the supporting block according to an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 1. Body;

[0041] 2. Channel pipe;

[0042] 201, fixed part; 202, movable part;

[0043] 3. Liquid delivery mechanism;

[0044] 301, pressing assembly; 3011, slider; 30111, extrusion portion; 3012, elastic member; 3013, roller; 30131, wheel seat; 30132, wheel body;

[0045] 4. Synchronization components;

[0046] 401, synchronous pipe; 402, top support block;

[0047] 5. Aircraft door;

[0048] 6. Press the block;

[0049] 7. Limiting components;

[0050] 701, first limiting member; 702, second limiting member;

[0051] 8. Driving unit;

[0052] 9. Transmission unit;

[0053] 901, gear shaft; 902, half ring gear;

[0054] 10. Infusion tube. DETAILED DESCRIPTION

[0055] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0056] In the description of the present invention, it should be noted that if terms such as "upper," "lower," "inner," and "outer" appear to indicate orientation or positional relationships, these are based on the orientation or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0057] Furthermore, in the description of the present invention, unless otherwise expressly defined, the terms "mounted," "connected," "connect," and "connector" should be interpreted broadly. For example, they may refer to fixed, removable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will appreciate the specific meanings of these terms in the present invention based on the specific circumstances.

[0058] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0059] This embodiment relates to a medical care infusion pump to make the infusion accuracy of the infusion pump more stable.

[0060] In terms of overall structure, a medical care infusion pump in this embodiment includes a body, a channel tube, a liquid delivery mechanism and a synchronization component. The channel tube is connected to the body and can allow the infusion tube to pass through. The liquid delivery mechanism includes multiple groups of pressing components arranged at intervals along the axial direction of the channel tube. The pressing component includes two sliders slidably connected to the channel tube. The two sliders can approach each other to squeeze the infusion tube, or move away from each other to release the infusion tube; each group of pressing components squeezes the infusion tube in turn, and can drive the liquid in the infusion tube to flow in one direction; there are two liquid delivery mechanisms, and there is an angle between the two liquid delivery mechanisms in the axial projection of the channel tube. The synchronization component can drive the slider to slide to drive the two liquid delivery mechanisms to squeeze the infusion tube in turn.

[0061] As configured above, the medical nursing infusion pump of this embodiment controls the slider through the synchronization component, and the two liquid delivery mechanisms can take turns squeezing the infusion tube to achieve unidirectional pumping of the liquid in the infusion tube. Because the two liquid delivery mechanisms squeeze the infusion tube in different directions, compared with the existing unidirectional squeezing infusion pump, it is less likely for the infusion tube to become flat and unable to fully rebound after delivering the same volume of liquid, which helps to improve the stability of the infusion accuracy of the infusion pump.

[0062] Based on the above overall introduction, refer to Figures 1 to 5 As shown, specifically, the medical care infusion pump of this embodiment is portable, and a handle is hinged on the top to facilitate the movement and transportation of the whole. An operating panel is provided on the upper part of the body 1, and a concave chamber is provided on the lower part to accommodate other structures. Secondly, a door 5 is hinged on the body 1, and the door 5 can be opened and closed to open or close the chamber of the body 1. Preferably, the two liquid delivery mechanisms 3 of this embodiment are arranged vertically in the axial projection of the channel tube 2, that is, when the sliders 3011 of the two liquid delivery mechanisms 3 squeeze the infusion tube 10, the squeezing directions are perpendicular to each other, which can better prevent the infusion tube 10 from becoming flat and being unable to fully rebound. Correspondingly, the channel tube 2 of this embodiment is a regular octagonal tube, which is convenient for arranging two groups of liquid delivery mechanisms 3.

[0063] Regarding the specific structure of the liquid delivery mechanism 3, an elastic member 3012 is provided between the slider 3011 and the channel tube 2 in this embodiment. The elastic member 3012 constantly pushes the slider 3011 toward the outside of the channel tube 2. The synchronization assembly 4 includes a synchronization tube 401 and a support block 402. The synchronization tube 401 is coaxially rotatably disposed outside the channel tube 2. The support block 402 is fixedly attached to the inner wall of the synchronization tube 401. When the support block 402 rotates with the synchronization tube 401, it can squeeze and push the slider 3011 to squeeze the infusion tube 10. The support blocks 402 are arranged in groups of two, and multiple groups are provided along the axial direction of the synchronization tube 401 corresponding to the sliders 3011. Each group of support blocks 402 is symmetrically arranged on both sides of the synchronization tube 401. The projections of the support blocks 402 of adjacent groups on the axial direction of the synchronization tube 401 are angled, so that each group of pressing assemblies 301 of the same liquid delivery mechanism 3 can squeeze the infusion tube 10 in sequence.

[0064] By adopting the above structure, the elastic member 3012 can keep the slider 3011 away from the infusion tube 10 when not under the action of the supporting block 402, that is, it does not squeeze the infusion tube 10. When the synchronous tube 401 rotates, causing the supporting block 402 to push the slider 3011, the slider 3011 can be gradually pushed toward the infusion tube 10 to press the infusion tube 10. The two symmetrical supporting blocks 402 simultaneously act on the sliders 3011 of the same pressing assembly 301, thereby squeezing the infusion tube 10. When the synchronous tube 401 continues to rotate and the supporting block 402 disengages from the slider 3011, the slider 3011 can be released and separated from the infusion tube 10.

[0065] Specifically, the end of the slider 3011 facing the synchronization tube 401 is provided with a roller 3013. The roller 3013 can roll along the surface of the support block 402 to move the slider closer to or further away from the infusion tube 10. The provision of the roller 3013 converts the sliding friction between the slider 3011 and the support block 402 into rolling friction, enabling the support block 402 to push the slider 3011 more smoothly. Preferably, the support block 402 is crescent-shaped in the radial cross-section of the channel tube 2. During contact with the roller 3013, the roller 3013 can be gradually pressed down and released, thereby pumping the liquid in the infusion tube 10 more smoothly and evenly. The circumferential angle occupied by the support block 402 on the inner wall of the synchronization tube 401 is less than 90 degrees, so that only one of the two sets of pressing assemblies 301 on the same radial plane on the infusion tube 10 is affected by the support block 402, thereby preventing motion interference between adjacent sliders 3011.

[0066] Furthermore, the roller 3013 includes a wheel seat 30131 and a wheel body 30132. The wheel seat 30131 is fixedly connected to the slider 3011, and the wheel body 30132 is rotatably connected to the wheel seat 30131. The elastic member 3012 is a spring, one end of which abuts the wheel seat 30131 and the other end abuts the outer wall of the channel tube 2. The end of the slider 3011 located within the channel tube 2 is provided with a pressing portion 30111 that contacts the infusion tube 10. The pressing portion 30111 can prevent the slider 3011 from falling out of the channel tube 2. The wheel seat 30131 provides a position for the spring to act, allowing the spring to push against the wheel seat 30131, thereby pressing the wheel body 30132 against the inner wall of the support block 402 or the synchronization tube 401. As a preferred embodiment, the spring is sleeved on the slider 3011 in this embodiment. The size of the extrusion portion 30111 is larger than the size of the upper middle portion of the slider 3011 , so that one end of the extrusion portion 30111 of the slider 3011 will not fall out of the channel tube 2 .

[0067] Preferably, the extrusion portion 30111 is a rectangular parallelepiped extending axially along the channel tube 2. This configuration allows the extrusion portion 30111 to have a larger contact area with the infusion tube 10 when squeezing the infusion tube 10, resulting in a better squeezing effect and higher pumping efficiency. The extrusion portion 30111, facing one end of the infusion tube 10, has rounded corners at both ends along the axial direction of the channel tube 2, making it less likely to damage the infusion tube 10.

[0068] Secondly, with regard to the structure of the channel tube 2, the channel tube 2 of this embodiment includes a fixed portion 201 and a movable portion 202. The fixed portion 201 and the movable portion 202 are both grooved plate structures, and can be interlocked with each other to form a tubular structure. The fixed portion 201 is fixedly connected to the machine body 1, and the movable portion 202 is detachably connected to the fixed portion 201. The fixed portion 201 and the movable portion 202 are provided so that when the infusion tube 10 needs to be installed or removed, the movable portion 202 can be removed to facilitate the entry and exit of the infusion tube 10. Preferably, the opening of the fixed portion 201 faces the direction of the machine door 5, which can facilitate the operator to load and unload the movable portion 202.

[0069] Specifically, the movable portion 202 is plugged into the fixed portion 201 along the direction in which it engages with the fixed portion 201. With respect to the four sliders 3011 in the same circumferential direction, three sliders 3011 are provided on the fixed portion 201, and one slider 3011 is provided on the movable portion 202. The sliding direction of the slider 3011 on the movable portion 202 is the same as the direction in which the movable portion 202 plugs into the fixed portion 201. The plug-in connection between the movable portion 202 and the fixed portion 201 simplifies the connection and facilitates installation.

[0070] Furthermore, to ensure the connection strength between the movable portion 202 and the fixed portion 201 during operation of the medical nursing infusion pump, a pressing block 6 is provided on the door 5 of this embodiment. When the door 5 is closed, the pressing block 6 presses the movable portion 202 against the fixed portion 201. The pressing block 6 can firmly press the movable portion 202, ensuring the connection strength between the movable portion 202 and the fixed portion 201, so that the movable portion 202 is not easily separated from the fixed portion 201 during operation.

[0071] In addition, the medical care infusion pump includes two sets of limit assemblies 7 arranged on the channel tube 2, and the two sets of limit assemblies 7 are respectively rotatably connected to the two ends of the synchronous tube 401. The synchronous tube 401 is formed by two semi-circular arc plates buckled together. The limit assembly 7 includes a first limiter 701 and a second limiter 702. The first limiter 701 is provided on the fixed portion 201, and the second limiter 702 is provided on the movable portion 202. When the movable portion 202 is buckled with the fixed portion 201, the synchronous tube 401 can be restricted to rotate along its own central axis between the first limiter 701 and the second limiter 702. The limit assembly 7 is disc-shaped, and an axially extending edge is provided on one side of the synchronous tube 401. The edge is cylindrical and can maintain the positional relationship of the two semi-circular arc plates, so that the two semi-circular arc plates are not easily deviated or misplaced when the synchronous tube 401 rotates. Of course, the limit assembly 7 can also be of other shapes, as long as it can ensure that the two semi-circular arc plates are buckled together when the synchronous tube 401 rotates.

[0072] In addition, regarding the specific driven mode of the synchronization component 4, the medical care infusion pump of this embodiment includes a driving part 8 and a transmission part 9 provided on the body 1. The transmission part 9 includes a gear shaft 901 and at least one group of half gear rings 902. The gear shaft 901 is rotatably connected to the body 1 and can be driven to rotate by the driving part 8. The half gear rings 902 in the same group are respectively fixed to the two semi-circular arc plates. When the two semi-circular arc plates are buckled, the half gear rings 902 in the same group are spliced into a complete outer gear ring and can engage with the gear shaft 901. Preferably, the driving part 8 of this embodiment is a motor, which is mounted on the bottom wall of the chamber of the body 1, and the output shaft is keyed to the gear shaft 901.

[0073] With this arrangement, the drive unit 8 rotates the gear shaft 901, which in turn drives the synchronizer tube 401 equipped with the half gear ring 902, thereby achieving control of the liquid delivery mechanism 3 by the synchronizer assembly 4. This gear transmission method offers high transmission efficiency, a constant transmission ratio, and a compact structure that occupies minimal space. Specifically, in this embodiment, two sets of half gear rings 902 are provided, one located axially near each end of the synchronizer tube 401. The corresponding gear shaft 901 also features two gears that mesh with the two sets of half gear rings 902, ensuring relatively stable rotation of the synchronizer tube 401.

[0074] It is understandable that the transmission part 9 may also be a transmission structure of a synchronous belt and a synchronous pulley, or a transmission structure of a belt and a pulley, as long as the synchronous tube 401 can be driven to rotate.

[0075] The medical care infusion pump of this embodiment controls the slider 3011 through the synchronization component 4, so that the two liquid delivery mechanisms 3 can take turns squeezing the infusion tube 10, achieving unidirectional pumping of the liquid in the infusion tube 10. Because the two liquid delivery mechanisms 3 squeeze the infusion tube 10 in different directions, compared with existing unidirectional squeezing infusion pumps, the infusion tube 10 is less likely to become flat and unable to fully rebound after delivering the same volume of liquid, which helps to improve the stability of the infusion pump's infusion accuracy. At the same time, due to the detachable structure of the channel tube 2 and the synchronization tube 401, the installation of the infusion tube 10 is also relatively convenient.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A medical nursing infusion pump, characterized in that: include: Body (1); A channel tube (2) is connected to the body (1) and is capable of allowing an infusion tube to pass through; The liquid delivery mechanism (3) comprises a plurality of pressing assemblies (301) arranged at intervals along the axial direction of the channel tube (2), the pressing assemblies (301) comprising two sliders (3011) slidably connected to the channel tube (2), the two sliders (3011) being able to move closer to each other to squeeze the infusion tube, or move away from each other to release the infusion tube; each group of pressing assemblies (301) sequentially squeezes the infusion tube, and is able to drive the liquid in the infusion tube to flow in one direction; the liquid delivery mechanism (3) is provided with two, and an angle is formed between the two liquid delivery mechanisms (3) with respect to the axial projection of the channel tube (2); A synchronization component (4) is capable of driving the slider (3011) to slide, thereby driving the two liquid delivery mechanisms (3) to squeeze the infusion tube in turn; An elastic member (3012) is provided between the slider (3011) and the channel tube (2), and the elastic member (3012) always pushes the slider (3011) toward the outside of the channel tube (2); The synchronization assembly (4) includes a synchronization tube (401) and a supporting block (402); the synchronization tube (401) is coaxially rotatably arranged outside the channel tube (2); the supporting block (402) is fixedly connected to the inner wall of the synchronization tube (401); when the supporting block (402) rotates with the synchronization tube (401), it can squeeze and push the slider (3011) to squeeze the infusion tube; The supporting blocks (402) are arranged in groups of two, and multiple groups are provided along the axial direction of the synchronous tube (401) corresponding to the sliders (3011). The supporting blocks (402) of each group are symmetrically arranged on both sides of the synchronous tube (401). An angle is provided between the projections of the supporting blocks (402) of adjacent groups on the axial direction of the synchronous tube (401), so that the pressing components (301) of the same liquid feeding mechanism (3) squeeze the infusion tube in sequence. The channel tube (2) comprises a fixed portion (201) and a movable portion (202); The fixed portion (201) and the movable portion (202) are both grooved plate structures and can be interlocked to form a tubular structure; the fixed portion (201) is fixedly connected to the body (1); and the movable portion (202) is detachably connected to the fixed portion (201); It comprises two groups of limit assemblies (7) arranged on the channel tube (2), and the two groups of limit assemblies (7) are rotatably connected to the two ends of the synchronization tube (401); The synchronization tube (401) is formed by buckling two semicircular arc plates; The limiting assembly (7) comprises a first limiting member (701) and a second limiting member (702), wherein the first limiting member (701) is provided on the fixed portion (201), and the second limiting member (702) is provided on the movable portion (202), and when the movable portion (202) is engaged with the fixed portion (201), the synchronous tube (401) can be limited to rotate along its own central axis between the first limiting member (701) and the second limiting member (702); It comprises a driving part (8) and a transmission part (9) arranged on the machine body (1); The transmission part (9) includes a gear shaft (901) and at least one group of half gear rings (902); the gear shaft (901) is rotatably connected to the machine body (1) and can be driven to rotate by the driving part (8); the half gear rings (902) in the same group are respectively fixed to the two semi-circular arc plates; when the two semi-circular arc plates are buckled, the half gear rings (902) in the same group are spliced into a complete outer gear ring and can mesh with the gear shaft (901).

2. The medical nursing infusion pump according to claim 1, characterized in that: A roller (3013) is provided at one end of the slider (3011) facing the synchronization tube (401), and the roller (3013) can roll along the surface of the supporting block (402) to move closer to or farther away from the infusion tube.

3. The medical nursing infusion pump according to claim 2, characterized in that: The roller (3013) comprises a wheel seat (30131) and a wheel body (30132), wherein the wheel seat (30131) is fixedly connected to the slider (3011), and the wheel body (30132) is rotatably connected to the wheel seat (30131); the elastic member (3012) is a spring, one end of which abuts against the wheel seat (30131) and the other end abuts against the outer wall of the channel tube (2); One end of the slider (3011) located inside the channel tube (2) is provided with a squeezing portion (30111) in contact with the infusion tube, and the squeezing portion (30111) can restrict the slider (3011) from falling out of the channel tube (2).

4. The medical nursing infusion pump according to claim 3, characterized in that: The extrusion portion (30111) is a rectangular parallelepiped extending axially along the channel tube (2).

5. The medical care infusion pump according to claim 1, characterized in that: The movable portion (202) is inserted into the fixed portion (201) along a direction in which it engages with the fixed portion (201).

6. The medical nursing infusion pump according to claim 5, characterized in that: A door (5) is hingedly connected to the machine body (1), and a pressing block (6) is provided on the machine door (5). When the machine door (5) is closed, the pressing block (6) presses the movable part (202) onto the fixed part (201).

Images