Nutrition infusion tube

Abstract

The embodiment of the utility model provides a nutrition infusion tube. The nutrition infusion tube comprises a peristaltic tube, an input tube connector, an output tube connector, a conveying tube and a supporting plate. The input pipe connector and the output pipe connector are both fixed to the supporting plate, the peristaltic pipe is connected between the input pipe connector and the output pipe connector, the supporting plate comprises a plate body and two supporting pieces, and the input pipe connector and the output pipe connector are both fixed to the plate body. The two supporting pieces are arranged on the same side of the plate body at intervals or the two supporting pieces are arranged on the two corresponding sides of the plate body, one supporting piece abuts against the input end of the peristaltic pipe, and the other supporting piece abuts against the output end of the peristaltic pipe, so that the two ends of the peristaltic pipe are prevented from getting close to each other in the direction facing the center line of the plate body. According to the nutrition infusion tube provided by the embodiment of the invention, the supporting piece is arranged in the nutrition infusion tube to change the form of the nutrition infusion tube when the nutrition infusion tube is not subjected to external force, so that an operator can be allowed to install the nutrition infusion tube in the nutrition infusion device with one hand, and the steps are simple and easy to implement.

Description

Technical Field

[0001] This application relates to the technical field of medical infusion devices, and particularly to a nutritional infusion tube. Background Art

[0002] A nutritional infusion tube is a medical device that can be installed in a nutritional infusion device to facilitate a patient to input water, nutrient solution, and self-made rice milk with a certain concentration into the body. In the prior art, during the process of assembling the nutritional infusion tube to the nutritional infusion device, the operator needs to cooperate with both hands to successfully install it, which is rather inconvenient to operate and the assembly process is cumbersome. Utility Model Content

[0003] The embodiment of this application provides a nutritional infusion tube. In the embodiment of this application, by providing a support member inside the nutritional infusion tube to maintain the shape of the nutritional infusion tube when no external force is applied, it allows the operator to install the nutritional infusion tube on the nutritional infusion device with one hand, facilitating the operator's use.

[0004] In a first aspect, the embodiment of this application provides a nutritional infusion tube. The nutritional infusion tube includes a peristaltic tube, an input tube connector, an output tube connector, a delivery tube, and a support plate; both the input tube connector and the output tube connector are fixed to the support plate. One end of the input tube connector is connected to the input end of the peristaltic tube, and the other end is connected to at least one delivery tube. One end of the output tube connector is connected to the output end of the peristaltic tube, and the other end is connected to another delivery tube; the support plate includes a plate body and two support members. Both the input tube connector and the output tube connector are fixed to the plate body. The two support members are spaced apart on the same side of the plate body or are respectively arranged on the opposite sides of the plate body. One of the support members abuts against a part of the input end of the peristaltic tube, and the other support member abuts against a part of the output end of the peristaltic tube to prevent a part of the input end of the peristaltic tube and a part of the output end of the peristaltic tube from approaching each other in the direction towards the center line of the plate body.

[0005] In a possible implementation, the two support members are located between the input end and the output end of the peristaltic tube.

[0006] In a possible implementation, the support member includes a connecting portion and a supporting portion. The connecting portion is fixedly connected to the plate body, and the supporting portion is spaced apart from the plate body and abuts against the input end or the output end of the peristaltic tube.

[0007] In a possible implementation, the nutritional infusion tube further includes a bending portion. The bending portion is connected between the connecting portion and the supporting portion, and the bending portion is in a curved shape; and / or, along the connecting direction of the connecting portion, the bending portion, and the supporting portion, the width of the bending portion is smaller than the width of the connecting portion and / or the width of the supporting portion; and / or, there is a hollowed-out area inside the bending portion.

[0008] In a possible implementation, the plate body has an installation opening, the peristaltic tube is installed in the installation opening, and the orthographic projection of the support portion in the direction towards the plate body covers at least part of the installation opening.

[0009] In a possible implementation, the maximum distance between the two support portions is in the range of 24 mm to 34 mm.

[0010] In a possible implementation, the support portion includes a main body portion, a first flap and a second flap. The first flap and the second flap are fixed to opposite sides of the main body portion, and part of the peristaltic tube is located on the main body portion between the first flap and the second flap.

[0011] In a possible implementation, the plate body has a top surface and a bottom surface. The peristaltic tube is closer to the bottom surface of the support plate than to the top surface of the support plate. The first flap is arranged closer to the top surface relative to the second flap; the orthographic projection of the first flap on the surface of the second flap is offset from the second flap; the distance between the first flap and the connecting portion is less than the distance between the second flap and the connecting portion, or the size of the second flap is larger than the size of the first flap. The first flap is closer to the connecting portion than the second flap.

[0012] In a possible implementation, the two ends of the peristaltic tube are axially symmetric with the center line of the plate body as the axis of symmetry, and the two support members are axially symmetric with the center line of the plate body.

[0013] In a possible implementation, the support member is made of acrylonitrile-butadiene-styrene copolymer resin material.

[0014] In the embodiment of the present application, by providing the support member to maintain the shape of the nutrient infusion tube before being subjected to an external force (for example, before being installed on the nutrient infusion device), it enables the operator to hold the peristaltic tube with one hand and easily sleeved it on the outer periphery of the roller of the nutrient infusion device, solving the problem in the prior art that the operator needs to use both hands to cooperate to pull or spread open the peristaltic tube and install it on the roller, and reducing the difficulty for the operator to install the nutrient infusion tube on the nutrient infusion device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the nutrient infusion system provided by the embodiment of the present application in some embodiments;

[0016] Figure 2 is Figure 1 a schematic structural diagram of the nutrient infusion system shown in another state;

[0017] Figure 3 is a schematic diagram of the installation environment of a nutrient infusion tube provided by the embodiment of the present application;

[0018] Figure 4 is Figure 2Schematic structural diagram of the nutrient infusion tube shown in some embodiments;

[0019] Figure 5 is Figure 4 Schematic structural diagram of the nutrient infusion tube shown in another perspective;

[0020] Figure 6 is Figure 5 Exploded schematic structural diagram of the nutrient infusion tube shown;

[0021] Figure 7 Partial process schematic diagram of a nutrient infusion tube provided by an embodiment of the present application installed on a nutrient infusion device;

[0022] Figure 8 is Figure 6 Schematic structural diagram of the support plate shown from another angle;

[0023] Figure 9 Schematic diagram of the nutrient infusion tube provided by an embodiment of the present application during the installation process;

[0024] Figure 10 Schematic structural diagram of another nutrient infusion tube provided by an embodiment of the present application.

[0025] 1 - Nutrient infusion system, 10 - Nutrient infusion tube, 11 - Peristaltic tube, 111 - Input end, 112 - Output end, 12 - Input tube connector, 121 - Reversing groove, 122 - First part, 123 - Second part, 13 - Output tube connector, 131 - Third part, 132 - Fourth part, 14 - Delivery tube, 141 - Output tube, 142 - Input tube, 15 - Support plate, 151 - Plate body, 151a - Top surface of support plate 15, 151b - Bottom surface of support plate 15, 151c - Ramp, 152 - Protrusion, 153 - Locking hole, 154 - Support member, 1541 - Connecting part, 1542 - Bent part, 1543 - Supporting part, 1543a - Main body part, 1543b - First retaining piece, 1543c - Second retaining piece, 155 - Installation groove, 155a - Installation opening, 16 - Magnet, 20 - Nutrient infusion device, 201 - Bottom surface of nutrient infusion device 20, 21 - Housing, 211 - Installation surface, 211a - First installation surface, 211b - Second installation surface, 211c - Third installation surface, 22 - Pump door, 23 - Installation space, 23a - First installation space, 23b - Second installation space, 23c - Third installation space, 24 - Driving component, 241 - Roller, 25 - Tube groove, 251 - Ultrasonic bubble sensor, 252 - Pressure sensor, 26 - Fixing component, 27 - Locking piece, 28 - Switching piece, 30 - Guide rail, 301 - First guide rail, 302 - Second guide rail, 303 - Third guide rail, 31 - Guide slot, 311 - First guide slot, 312 - Second guide slot. Specific Embodiments

[0026] The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0027] In the description of the embodiments of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. "Plurality" means at least two.

[0028] The orientation terms mentioned in the embodiments of the present application, such as "upper", "inner", "outer", "top", "bottom", "side", etc., are only with reference to the direction of the accompanying drawings. Therefore, the orientation terms used are for better and clearer description and understanding of the embodiments of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation to the embodiments of the present application.

[0029] In the embodiments of the present application, the limitations on the relative position relationship are mentioned, such as parallel and perpendicular. These limitations are for the current technological level and are not absolute strict limitations. A small deviation is allowed, and approximate parallelism, approximate perpendicularity, etc. are all acceptable. For example, A is parallel to B means that A is parallel to B or approximately parallel to B, and the included angle between A and B can be between 0 degrees and 10 degrees. For example, A is perpendicular to B means that A is perpendicular to B or approximately perpendicular to B, and the included angle between A and B can be between 80 degrees and 100 degrees.

[0030] In the embodiments of the present application, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. Among them, an integrally formed structural member means that during the process of forming one part of the structural member, this part is connected to the other part together and does not require connecting the two parts together by means of further processing (such as bonding, welding, snap connection, screw connection).

[0031] Please refer to Figure 1 and Figure 2 , Figure 1 which are schematic structural diagrams of the nutritional infusion system 1 provided by the embodiments of the present application in some embodiments, Figure 2 is Figure 1 a schematic structural diagram of the nutritional infusion system 1 shown in another state.

[0032] In some embodiments, the nutritional infusion system 1 may include a nutritional infusion tube 10 and a nutritional infusion device 20. The nutritional infusion tube 10 may be detachably mounted on the nutritional infusion device 20. Clinically, the nutritional infusion system 1 is generally used to deliver water, nutrient solution, and self-made rice milk of a certain concentration to patients to provide nutrition for them. Among them, the nutritional infusion device 20 may provide a driving force for the fluid in the pipeline of the nutritional infusion tube 10 mounted thereon to push the fluid in the pipeline of the nutritional infusion tube 10 forward, so as to transport fluids such as nutrient solution and cleaning solution in the pipeline of the nutritional infusion tube 10 to the patient.

[0033] Please refer to Figure 2 and Figure 3 , Figure 3 which is a schematic diagram of the installation environment of a nutritional infusion tube 10 provided by an embodiment of the present application.

[0034] In some embodiments, the nutritional infusion device 20 may include a housing 21 and a pump door 22. The pump door 22 may be rotatably connected to one side of the housing 21. Exemplarily, the housing 21 may be made of materials such as plastic and silica gel and is used to provide strength support for the nutritional infusion device 20. The pump door 22 may be hinged to the housing 21 through a door hinge. In some other embodiments, the pump door 22 may also be detachably connected to the housing 21 and covered on the housing 21 when needed. Alternatively, the pump door 22 may also be slidably connected to the housing 21. The present application does not limit the connection manner between the pump door 22 and the housing 21. In some embodiments, the nutritional infusion device 20 may also not include the pump door 22, and the present application also does not limit this.

[0035] Exemplarily, the nutritional infusion device 20 may have an installation space 23. The installation space 23 may be considered to be formed by the partial outer surface of the housing 21 recessing towards the inside of the housing 21. The installation space 23 may be used to accommodate other structural components (such as the nutritional infusion tube 10, etc.) in the nutritional infusion system 1. During the process of the pump door 22 opening relative to the housing 21, the structural components installed in the installation space 23 are exposed to facilitate the operator to install or replace the structural components in the installation space 23. When the pump door 22 is closed relative to the housing 21, the pump door 22 may cover the installation space 23 to protect the structural components installed in the installation space 23 and prevent external impurity water, dust, etc. from affecting the service life of the structural components in the installation space 23. Among them, as Figure 1 shown, the pump door 22 and the housing 21 may jointly form the outer contour of the nutritional infusion system 1. When the pump door 22 is closed relative to the housing 21, the overall shape of the nutritional infusion system 1 can be restored. The outer surface of the nutritional infusion system 1 may be considered approximately flat, ensuring the aesthetics of the product.

[0036] Exemplarily, please refer to again Figure 1As shown, the nutritional infusion device 20 can be erected on a support base such as a tabletop or a support frame. The nutritional infusion device 20 can have a bottom surface 201, and the bottom surface 201 of the nutritional infusion device 20 can be used to contact the support base such as a tabletop or a support frame. In some examples, a flexible support pad can also be provided on the bottom surface 201 of the nutritional infusion device 20 to avoid hard contact between the nutritional infusion device 20 and the support base, increase the friction between the nutritional infusion device 20 and the support base, ensure the stability of the nutritional infusion device 20, and also slow down the wear or scratching of the bottom surface 201 of the nutritional infusion device 20. Wherein, the side where the bottom surface 201 of the nutritional infusion device 20 is located is defined as the bottom side of the nutritional infusion device 20, and the top side of the nutritional infusion device 20 is opposite to the bottom side.

[0037] It can be understood that, for the convenience of description hereinafter, in the embodiments of the present application, it is defined that Figure 1 the nutritional infusion device 20 shown is in an erected state, and it is defined that Figure 1 the nutritional infusion device 20 shown has an X-axis direction, a Y-axis direction, and a Z-axis direction. The X-axis direction can be parallel to the length direction of the nutritional infusion device 20, the Z-axis direction can be parallel to the height direction of the nutritional infusion device 20, the Y-axis direction can be parallel to the width direction of the nutritional infusion device 20, and any two of the X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other. In other embodiments, the nutritional infusion device 20 can also lie flat, be hung, or be connected to a support base such as a tabletop or a support frame in other postures, and the coordinate system setting of the nutritional infusion device 20 can be flexibly set according to specific actual needs, and the present application does not limit this.

[0038] In some embodiments, the nutritional infusion device 20 can further include a driving assembly 24. The driving assembly 24 can include rollers 241. The rollers 241 can be installed in the installation space 23 and are rotatably connected to the housing 21. Exemplarily, the housing 21 can have an installation surface 211, and the operator can face the installation surface 211 of the nutritional infusion device 20 to operate the structural members located in the installation space 23. In the embodiments of the present application, the rollers 241 can be exposed relative to the installation surface 211 and are arranged close to the bottom side of the nutritional infusion device 20. In other embodiments, the rollers 241 can be arranged close to the top side of the nutritional infusion device 20, or at the middle position of the housing 21, and the present application does not limit this.

[0039] Please refer to Figure 4 、 Figure 5 and Figure 6 , Figure 4 which Figure 2 is a schematic structural diagram of the nutritional infusion tube 10 shown in some embodiments, Figure 5 and Figure 4 is a schematic structural diagram of the nutritional infusion tube 10 shown from another perspective.Figure 6 is Figure 5 the exploded structural schematic diagram of the nutritional infusion tube 10 shown in the figure.

[0040] In some embodiments, the nutritional infusion tube 10 may include a peristaltic tube 11, an input tube connector 12, an output tube connector 13, and a delivery tube 14. One end of the input tube connector 12 is connected to the input end 111 of the peristaltic tube 11, and the other end is connected to at least one delivery tube 14. One end of the output tube connector 13 is connected to the output end 112 of the peristaltic tube 11, and the other end is connected to another delivery tube 14. Among them, by connecting the peristaltic tube 11, the input tube connector 12, the output tube connector 13, and the delivery tube 14, the pipeline part in the nutritional infusion tube 10 can be assembled into an integrated structure, improving the modularity of the structure in the nutritional infusion tube 10 and facilitating the reduction of the operation difficulty of moving and installing the nutritional infusion tube 10.

[0041] Exemplarily, the peristaltic tube 11 can be made of materials such as silica gel, and has characteristics such as high heat resistance, insulation, reliability, bendability, and flexibility. In the embodiments of the present application, the peristaltic tube 11 can directly sleeve on the input tube connector 12 and / or the output tube connector 13 by using its elasticity, or can also be connected to the input tube connector 12 and / or the output tube connector 13 by means of glue bonding, ultrasonic welding, etc. In other embodiments, the peristaltic tube 11 and the input tube connector 12 and / or the output tube connector 13 can also be an integrally formed structure, and the present application does not limit this. In some embodiments, the nutritional infusion tube 10 may not include the input tube connector 12 and / or the output tube connector 13 either. One end of the peristaltic tube 11 can be directly connected to at least one delivery tube 14, and the other end of the peristaltic tube 11 can be directly connected to another delivery tube 14, and the present application does not limit this.

[0042] Exemplarily, the number of the delivery tubes 14 can be 2, 3 or more. The delivery tubes 14 serve as fluid delivery paths. Multiple delivery tubes 14 can include an output tube 141 and at least one input tube 142. Multiple input tubes 142 can be respectively used to pour different fluids such as nutrient solution and cleaning solution into the peristaltic tube 11, and then be delivered to the patient via the output tube 141. Among them, the delivery tube 14 can be made of a synthetic material (Polyvinylchlorid, PVC) or a thermoplastic polyurethane elastomer rubber (Thermoplastic polyurethanes, TPU) made by adding other components to polyvinyl chloride, and the present application does not limit this.

[0043] In some examples, the input tube connector 12 can be a valve mechanism such as a two-way valve with one inlet and one outlet or a three-way valve with two inlets and one outlet. By controlling the position of the valve core in the valve, the communication of the channel between the delivery tube 14 and the peristaltic tube 11 can be controlled. For example, one of the inlets and outlets between the delivery tube 14 and the peristaltic tube 11 can be communicated. For another example, the other inlet and outlet between the delivery tube 14 and the peristaltic tube 11 can be communicated. Or the channel between the delivery tube 14 and the peristaltic tube 11 can be blocked, so as to realize the on-off and switching of different fluid passages in the nutrition infusion tube 10. The valve mechanism has high flexibility and strong reliability, which helps to improve the reliability of the nutrition infusion tube 10 and the nutrition infusion system 1. Among them, before the nutrition infusion tube 10 is installed on the nutrition infusion device 20, the pipeline in the nutrition infusion tube 10 can be in a blocked state. After the nutrition infusion tube 10 is installed on the nutrition infusion device 20, by rotating the angle of the valve core, the three-way / two-way valve is controlled to communicate with the corresponding pipeline according to the setting to realize the feeding of the nutrient solution. After the feeding is stopped, by rotating the control three-way / two-way valve core to reset to the blocked state, the uncontrolled free flow after the nutrition infusion tube 10 is removed from the nutrition infusion device 20 is avoided, so as to improve the reliability and safety of the nutrition infusion system 1. In other embodiments, the input tube connector 12 can also be other structures, which are not limited in this application.

[0044] Combined with Figure 2 As shown, in the embodiment of the present application, the pipeline of the nutrition infusion tube 10 can be wound around the outer periphery of the roller 241. The roller 241 can generate a certain pressure on the pipeline of the nutrition infusion tube 10. For example, when the nutrition infusion tube 10 is installed in place, the peristaltic tube 11 can be in contact with at least part of the roller 241. When the roller 241 rotates, the peristaltic tube 11 is in a stretched state. When the roller 241 rotates, the roller 241 can generate a driving force on the fluid in the pipeline of the peristaltic tube 11, and push the fluid in the pipeline of the peristaltic tube 11 to flow along the pipeline to deliver the nutrients flowing into the peristaltic tube 11 to the patient; when the roller 241 stops rotating, the pressure of the roller 241 on the pipeline of the peristaltic tube 11 is relatively large, and the fluid passage in the pipeline of the peristaltic tube 11 is equivalent to being blocked, and the fluid in the pipeline of the peristaltic tube 11 stops flowing forward, so the delivery of nutrients to the patient stops.

[0045] In some embodiments, the nutritional infusion tube 10 may further include a support plate 15, and both the input tube connector 12 and the output tube connector 13 are fixed to the support plate 15. By providing the support plate 15 to connect the input tube connector 12 and the output tube connector 13, the support plate 15 can be used to fix the relative positions of the input tube connector 12 and the output tube connector 13, which is beneficial to maintaining the shape of the nutritional infusion tube 10, enabling the flexible pipeline to have a fixed shape and position, facilitating installation, and further improving the integration of the structure of the nutritional infusion tube 10, reducing the operation difficulty of moving the nutritional infusion tube 10.

[0046] Please refer to Figure 5 and Figure 6 , for example, the support plate 15 may have two mounting grooves 155, and the input tube connector 12 and the output tube connector 13 are respectively fixed in the two mounting grooves 155. Among them, the input tube connector 12 and / or the output tube connector 13 can be fixed in the mounting groove 155 by means of snap connection, glue bonding, etc. The mounting groove 155 can limit and position the input tube connector 12 and the output tube connector 13 located therein, and by arranging the input tube connector 12 and the output tube connector 13 in the mounting groove 155, the mounting groove 155 can also support the input tube connector 12 and the output tube connector 13, which is beneficial to improving the strength of the structure at the connection of the input tube connector 12, the peristaltic tube 11, the output tube connector 13, and the delivery tube 14, thereby improving the connection reliability of the nutritional infusion tube 10.

[0047] Among them, the arrangement direction of the two mounting grooves 155 may be parallel to the arrangement direction of the input tube connector 12 and the output tube connector 13. In the embodiments of the present application, the input tube connector 12 and the output tube connector 13 may be arranged in the X-axis direction, that is, the two mounting grooves 155 may be arranged in the X-axis direction. In other embodiments, the arrangement direction of the two mounting grooves 155 and the arrangement direction of the input tube connector 12 and the output tube connector 13 may intersect or be perpendicular to the X-axis direction, etc. The embodiments of the present application do not limit this.

[0048] Among them, the support plate 15 may have a top surface 151a (as shown in Figure 4 ) and a bottom surface 151b (as shown in Figure 5 ). The top surface 151a of the support plate 15 and the bottom surface 151b of the support plate 15 are located on opposite sides of the support plate 15 in the Y-axis direction. The bottom surface 151b of the support plate 15 is closer to the mounting surface 211 than the top surface 151a of the support plate 15. The mounting groove 155 can be regarded as being recessed from a part of the bottom surface 151b toward the top surface 151a side.

[0049] Please refer to Figure 2 and Figure 3, in some embodiments, the nutritional infusion device 20 may have two tube grooves 25. After the nutritional infusion tube 10 is installed in the nutritional infusion device 20, the partial pipelines of the peristaltic tube 11 connected to the input tube connector 12 and the partial pipelines of the peristaltic tube 11 connected to the output tube connector 13 can be respectively fixed in the two tube grooves 25. By providing the tube grooves 25 in the nutritional infusion device 20, the tube grooves 25 can limit the extending direction of the pipeline of the peristaltic tube 11, which helps to make the pipeline of the nutritional infusion tube 10 more smoothly wound around the outer periphery of the roller 241. In addition, by providing the tube grooves 25 to fix the relative positions of the nutritional infusion tube 10 and the nutritional infusion device 20, problems such as the dropping of the nutritional infusion tube 10 can also be avoided when external factors, such as an operator accidentally colliding with the nutritional infusion system 1, occur.

[0050] Exemplarily, an ultrasonic bubble sensor 251 may be embedded in the groove wall of the tube groove 25. When the peristaltic tube 11 is embedded in the tube groove 25, the ultrasonic bubble sensor 251 can emit and receive ultrasonic waves, and then judge whether there are bubbles according to the differences in their reflection and propagation, so as to detect the bubbles in the pipeline of the peristaltic tube 11, which is beneficial to improving the safety and reliability of the nutritional infusion system 1.

[0051] Exemplarily, other detection devices such as a pressure sensor 252 may also be provided in the nutritional infusion device 20 to detect other parameters such as the blockage pressure of the pipeline of the peristaltic tube 11, so as to monitor the normal and smooth operation of the nutritional infusion system 1, which is convenient for the operator to timely understand and control the working state of the nutritional infusion system 1. This application does not make any limitations thereto. In the embodiments of this application, an ultrasonic bubble sensor 251 and a pressure sensor 252 may be respectively provided in the two tube grooves 25, Figure 2 and Figure 3 only schematically shows the positions of the ultrasonic bubble sensor 251 and the pressure sensor 252, and can be designed according to actual needs.

[0052] Exemplarily, the tube groove 25 can be arranged on the top side of the roller 241 facing the nutritional infusion device 20. The distance between the ends of the two tube grooves 25 close to the roller 241 can be greater than the distance between the ends of the two tube grooves 25 far from the roller 241. The ends of the two tube grooves 25 close to the roller 241 can be approximately in an "eight" - shaped structure. By setting the shape of the tube groove 25, the good shaping effect of the tube groove 25 on the nutritional infusion tube 10 is utilized, which can help the nutritional infusion tube 10 maintain a bent state similar to a "water droplet shape", facilitating the peristaltic tube 11 to be more smoothly wound around the roller 241. In other embodiments, the relative position of the tube groove 25 and the roller 241 can also be flexibly set according to actual needs. The tube groove 25 can also be linear, curved or of other shapes, which is not limited in this application. Or, in some other embodiments, the tube groove 25 may not be provided in the nutritional infusion device 20.

[0053] Please refer to Figure 7 , Figure 7 which is a partial process schematic diagram of installing a nutritional infusion tube 10 on a nutritional infusion device 20 provided by an embodiment of the present application. Among them, Figure 7 7A in Figure 7 means that the nutritional infusion tube 10 has just been sleeved on the roller 241,

[0054] 7B in

[0055] means that the nutritional infusion tube 10 has been installed in a preset position.

[0055] The process of installing the nutritional infusion tube 10 on the nutritional infusion device 20 generally may include: sleeving the peristaltic tube 11 on the outer periphery of the roller 241; moving the support plate 15 to stretch the peristaltic tube 11 so that the peristaltic tube 11 can be in contact with at least part of the roller 241; and fixing the nutritional infusion tube 10 to the nutritional infusion device 20.

[0055] In the prior art, in the process of assembling the nutrition infusion tube 10 on the nutrition infusion device 20, the operator usually needs to use both hands to overcome the elastic force of the peristaltic tube 11 first, pull the peristaltic tube 11 open, and then put it on the roller 241; and, in the process of moving the support plate 15 to stretch the peristaltic tube 11, it is necessary to pinch the upper and lower ends of the support plate 15 (in the embodiment of the present application, the two ends of the support plate in the Z-axis direction) to apply force. During the stretching of the peristaltic tube 11, the support plate 15 is suspended in the air, which is not easy for the operator to operate and apply force, and the support plate 15 is also easy to deviate from the preset position, affecting the accuracy and reliability of the installation position of the nutrition infusion tube 10 after it is installed in the nutrition infusion device 20. In addition, when the nutrition infusion tube 10 is fixed to the nutrition infusion device 20, the support plate 15 is pressed in a direction perpendicular to the roller 241 (i.e., the Y-axis direction in the embodiment of the present application) so that the support plate 15 is inserted into the structural member for fixing the support plate 15 provided on the nutrition infusion device 20. However, pressing the support plate 15 downward in midair and causing it to fall vertically can easily damage the support plate 15. It can be seen that the assembly process of the prior art is cumbersome and requires the operator to work with both hands, which is inconvenient to operate and has low reliability.

[0056] Therefore, if Figure 2 , Figure 4 as well as Figure 5 As shown, an embodiment of the present application provides a nutrition infusion tube 10, and the structure of the nutrition infusion tube 10 is specifically the structure of the support plate 15, which is improved compared with the existing structure. The nutrition infusion tube 10 can allow the operator to install it on the nutrition infusion device 20 with one hand, and the installation process is simple and easy to implement.

[0057] See also Figure 5 as well as Figure 7 As shown, in some embodiments, the maximum spacing L1 of the peristaltic tube 11 in the first direction may be greater than or equal to the maximum spacing L2 between any two points on the roller 241. It is understood that the maximum spacing L1 of the peristaltic tube 11 in the first direction refers to the maximum spacing L1 of the peristaltic tube 11 in the first direction (such as the maximum spacing L1 of the peristaltic tube 11 in the first direction) before the nutrition infusion tube 10 is not sleeved on the roller 241 (that is, before the peristaltic tube 11 is in a normal state or is not deformed by external force). Figure 4 By setting the maximum distance L1 between the peristaltic tubes 11 in the normal state to be greater than or equal to the maximum distance L2 between any two points on the roller 241 (as shown in FIG. Figure 2 As shown in the figure, the peristaltic tube 11 can be easily sleeved on the roller 241, which simplifies the process in the prior art where the user needs to overcome the elastic force of the peristaltic tube 11 to stretch it open before sleeved on the roller 241. The user can sleeve the nutrition infusion tube 10 on the outer periphery of the roller 241 with one hand, thereby simplifying the process of assembling the nutrition infusion tube 10 on the nutrition infusion device 20 and facilitating the use of the operator.

[0058] Among them, the first direction may be parallel to the mounting surface 211 of the housing 21. For example, the first direction may be parallel to the X-axis direction. In other embodiments, the first direction may also be parallel to the Y-axis direction or the Z-axis direction, or intersect with the X-axis direction and / or the Y-axis direction and / or the Z-axis direction. This application does not limit this. In the embodiments of this application, the arrangement direction of the input tube connector 12 and the output tube connector 13 may be parallel to the X-axis direction. That is, the first direction may be parallel to the arrangement direction of the input tube connector 12 and the output tube connector 13. In other embodiments, the arrangement direction of the input tube connector 12 and the output tube connector 13 may also intersect with the X-axis direction. The embodiments of this application do not limit this either.

[0059] In the embodiments of this application, the roller 241 may be approximately cylindrical. The maximum distance L2 between any two points on the roller 241 can also be understood as the length of the diameter of the roller 241. That is, the maximum distance L1 of the peristaltic tube 11 in the first direction can be greater than or equal to the diameter (maximum distance L2) of the roller 241 in the first direction, so that the peristaltic tube 11 in the non-deformed state can be sleeved on the outer periphery of the roller 241 with one hand. At this time, the plane where the peristaltic tube 11 is located can be considered parallel to the end face of the roller 241. The peristaltic tube 11 is directly opposite to the roller 241. The connection line between the two points with the maximum distance on the roller 241 can be parallel to the first direction (that is, the connection line between the two points with the maximum distance on the roller 241 can be parallel to the X-axis direction). Among them, the non-deformed state means that no additional external force is applied to the peristaltic tube 11 by the operator. At this time, the peristaltic tube 11 may be in a completely non-deformed state, or may have a slight deformation due to the support of other structures inside the nutrition infusion tube 10.

[0060] In the embodiments of this application, the diameter of the end face of the roller 241 may be 33 mm. Exemplarily, the maximum distance L1 of the peristaltic tube 11 in the first direction in the normal state may be greater than or equal to 33 mm. In other embodiments, the maximum distance L2 between any two points of the roller may also be other values, such as 30 mm, 32 mm, 35 mm, 38 mm, etc. The maximum distance L1 of the peristaltic tube 11 in the first direction in the normal state can be set as needed.

[0061] It is understandable that there may be an angle between the direction of the line connecting any two points on the roller 241 and the first direction. In the embodiment of the present application, that is, there may be an angle between the line connecting the two points with the maximum spacing on the roller 241 and the X-axis direction. For example, the surface cross-section of the roller 241 may also be an ellipse, a square, a triangle or other shapes. The maximum spacing between any two points on the roller 241 may be the length of the long axis of the roller 241 or the length of the diagonal of the roller 241. In the process of sleeve-mounting the peristaltic tube 11 on the periphery of the roller 241, the peristaltic tube 11 in a non-deformed state may also be brought into contact with part of the periphery of the roller 241. The contact point between the roller 241 and the peristaltic tube 11 is used as the fulcrum. After the peristaltic tube 11 is slightly deformed by moving the support plate 15, another part of the peristaltic tube 11 is brought into contact with another part of the periphery of the roller 241. Among them, the force of moving the support plate 15 to cause slight deformation of the peristaltic tube 11 is much smaller than the maximum force that the operator can provide with one hand. At this time, moving the support plate 15 can be understood as rotating or translating the support plate 15 at any angle to adjust the support plate 15 to a state facing the mounting surface 211, so that one side of the support plate 15 in the Z-axis direction can be parallel to the X-axis direction, or the arrangement direction of the two sides of the support plate 15 in the X-axis direction can be parallel to the X-axis direction.

[0062] Please refer to Figure 5 , Figure 7 and Figure 8 As shown, Figure 8 yes Figure 6 The support plate 15 is shown as a schematic structural diagram at another angle.

[0063] In some embodiments, the support plate 15 may include a plate body 151 and a support member 154. The support member 154 may be disposed on a side of the plate body 151 facing the roller 241. The support member 154 may abut against the peristaltic tube 11 to prevent the input end 111 (such as Figure 5 ) and the output end 112 of the peristaltic tube 11 (as shown Figure 5approach each other in the direction towards the center line O of the plate body to maintain the shape of the peristaltic tube 11 in the normal state, so that the maximum distance L1 of the peristaltic tube 11 in the first direction (i.e., the X-axis direction) in the normal state can be greater than or equal to the maximum distance L2 between any two points of the roller 241. For example, the number of the support members 154 can be two. The two support members 154 can be arranged at intervals on the same side of the plate body 151. The two support members 154 can respectively abut against a part of the input end 111 of the peristaltic tube 11 and a part of the output end 112 of the peristaltic tube 11 to prevent the output end 112 of a part of the peristaltic tube 11 from approaching the input end 111 of a part of the peristaltic tube 11 in the first direction, so that the maximum distance L1 of the peristaltic tube 11 in the first direction in the normal state can be greater than or equal to the maximum distance L2 between any two points of the roller 241. Wherein, the input end 111 of the peristaltic tube 11 is an area or section with a certain length, which can include the part where the peristaltic tube 11 is connected to the input tube connector 12, and can also include the pipeline of the peristaltic tube 11 near the input tube connector 12. Similarly, the output end 112 of the peristaltic tube 11 is also an area or section with a certain length, which can include the part where the peristaltic tube 11 is connected to the output tube connector 13, and can also include the pipeline of the peristaltic tube 11 near the output tube connector 13.

[0064] In some examples, the two support members 154 can also be respectively arranged on the corresponding two sides of the plate body 151. For example, in the embodiment of the present application, the two support members 154 can also be arranged on the two sides of the plate body 151 opposite to each other in the X-axis direction to respectively prevent at least a part of the input end 111 of the peristaltic tube 11 and at least a part of the output end 112 of the peristaltic tube 11 from approaching each other in the direction towards the center line O of the plate body (i.e., the X-axis direction). In the embodiment of the present application, the setting position of the support member 154 is not limited.

[0065] In some examples, the two support members 154 can be arranged between the input end 111 and the output end 112 of the peristaltic tube 11, which can reduce the size of the support plate 15 while facilitating the support member 154 to prevent the two ends of the peristaltic tube 11 from approaching each other, so as to facilitate the operator to use.

[0066] In some embodiments, the plate body 151 and / or the support member 154 can be made of materials including but not limited to acrylonitrile-butadiene-styrene copolymer (ABS) resin and other materials with relatively high strength and toughness. The present application does not specifically limit the materials of the plate body 151 and the support member 154. Wherein, the support member 154 can be connected to the plate body 151 by means of glue bonding, welding, etc., or the support member 154 and the plate body 151 can also be an integral structure. The embodiment of the present application does not limit this.

[0067] Specifically, in the embodiments of the present application, as Figure 5 and Figure 6 shown, the installation groove 155 can penetrate the plate body 151 in the Z-axis direction. The side of the installation groove 155 facing the support member 154 can have an installation opening 155a. The part where the peristaltic tube 11 is connected to the input tube connector 12 can be located in the installation groove 155, and the part of the peristaltic tube 11 near the input tube connector 12 can be the pipeline where the peristaltic tube 11 extends out of the installation opening 155a; the part where the peristaltic tube 11 is connected to the output tube connector 13 can be located in the installation groove 155, and the part of the peristaltic tube 11 near the output tube connector 13 can be the pipeline where the peristaltic tube 11 extends out of the installation opening 155a. The two support members 154 can respectively abut against the part of the input end 111 of the peristaltic tube 11 that extends out of its corresponding installation opening 155a, and abut against the part of the output end 112 of the peristaltic tube 11 that extends out of its corresponding installation opening 155a, so as to prevent the output end 112 of this part of the peristaltic tube 11 from approaching the input end 111 of this part of the peristaltic tube 11 in the first direction, so that the maximum distance L1 of the peristaltic tube 11 in the first direction under normal conditions can be greater than or equal to the maximum distance L2 between any two points of the roller 241.

[0068] Please refer to Figure 7 and Figure 9 shown, Figure 9 is a schematic diagram of the installation process of the nutritional infusion tube 10 provided by the embodiments of the present application. Among them, Figure 9 the position, size, etc. of the nutritional infusion tube 10 in

[0069] When an external force is applied to make the support plate 15 move in a direction away from the roller 241, the peristaltic tube 11 will be stretched and elongated as the support plate 15 moves until the support plate 15 reaches a preset position, and the peristaltic tube 11 abuts against at least part of the roller 241 in a straightened state. Among them, the peristaltic tube 11 being in a straightened state can be understood as the state where the peristaltic tube 11 is just straightened, that is, between the state where it is about to generate a tensile force but has not yet generated it, and the state where the peristaltic tube 11 is about to break when it is further stretched. During this process, the maximum distance of the peristaltic tube 11 in the first direction can be considered to be shrinking. In the embodiments of the present application, the support member 154 can have a certain elastic deformation ability, that is, the support member 154 can deform as the peristaltic tube 11 is stretched and elongated, so as to adapt to different maximum distances of the peristaltic tube 11 in the first direction, and can prevent the support member 154 from obstructing the peristaltic tube 11 when it moves, or even piercing the peristaltic tube 11.

[0070] In some embodiments, the center line O of the plate body 151 (such as Figure 2As shown in the figure, the center line O of the plate 151 can be perpendicular to the first direction (that is, in the embodiment of the present application, the center line O of the plate 151 can be perpendicular to the X-axis direction). After the nutrition infusion tube 10 is installed on the nutrition infusion device 20, the center line O of the plate 151 can pass through the rotation center of the roller 241, and the two ends of the peristaltic tube 11 can be axially symmetrical with the center line O of the plate 151 as the symmetry axis. The two support members 154 can be axially symmetrical with the center line O of the plate 151 to ensure that the two ends of the peristaltic tube 11 are evenly stressed. In some other embodiments, the two support members 154 may not be axially symmetrical, and the present application does not limit this.

[0071] like Figure 8 As shown, illustratively, the support member 154 may include a connecting portion 1541, a bending portion 1542 and a supporting portion 1543 connected in sequence, the connecting portion 1541 is fixedly connected to the plate body 151, the supporting portion 1543 is spaced apart from the plate body 151, and the supporting portion 1543 abuts against the input end 111 of the peristaltic tube 11 or the output end 112 of the peristaltic tube 11, the bending portion 1542 is connected between the connecting portion 1541 and the supporting portion 1543, and the bending portion 1542 is curved. Among them, the spacing of the supporting portion 1543 and the plate body 151 can be understood as a gap between the supporting portion 1543 and the plate body 151. By setting the bending portion 1542 in a curved shape, the anti-bending performance of the support member 154 can be improved, the stress buffering effect can be achieved, and the support member 154 can be prevented from breaking when deformed. In some other embodiments, the support member 154 may not include the bending portion 1542 , and the support member 154 may be approximately straight or in other shapes, abutting between the peristaltic tube 11 and the plate 151 . The embodiment of the present application does not limit the shape of the support member 154 .

[0072] In some examples, along the connection direction of the connection portion 1541, the bending portion 1542 and the support portion 1543, the width of the bending portion 1542 is smaller than the width of the connection portion 1541 and / or the width of the support portion 1543; and / or, a hollow area is provided in the bending portion 1542. By setting the bending portion 1542 to be narrower or lighter than the connection portion 1541 and the support portion 1543, the bending portion 1542 is easier to deform, that is, the ability of the support member 154 to deform during the stretching and elongation process of the peristaltic tube 11 can be improved, so as to improve the reliability of the support member 154 abutting against the peristaltic tube 11.

[0073] In some embodiments, the orthographic projection of the support portion 1543 toward the plate body 151 covers at least a portion of the corresponding mounting opening 155a. By setting the projection of the support portion 1543 on the plate body 151 to partially or completely cover the corresponding mounting opening 155a, it is possible to ensure that the length of the support member 154 is sufficient to open the peristaltic tube 11, thereby changing the maximum spacing of the peristaltic tube 11 in the first direction in the normal state.

[0074] Please refer to Figure 4 、 Figure 5 and Figure 8 In some embodiments, the support portion 1543 may include a main body portion 1543a, a first flap 1543b, and a second flap 1543c. The first flap 1543b and the second flap 1543c are fixed to opposite sides of the main body portion 1543a, and the peristaltic tube 11 is located on the main body portion 1543a between the first flap 1543b and the second flap 1543c. By providing the first flap 1543b and the second flap 1543c, the first flap 1543b and the second flap 1543c can surround at least a part of the outer periphery of the peristaltic tube 11 to limit and prevent the peristaltic tube 11 from moving in its radial direction and disengaging from the support member 154, which can improve the connection reliability of the support portion 1543 abutting against the peristaltic tube 11. In some embodiments, the support portion 1543 may also not include the first flap 1543b and / or the second flap 1543c, and the embodiments of the present application do not limit this.

[0075] Exemplarily, the orthographic projection of the first flap 1543b in the direction towards the plane where the second flap 1543c is located is staggered from the second flap 1543c, which is beneficial to reducing the manufacturing difficulty of the support member 154 and facilitating the mold opening for manufacturing the support member 154.

[0076] In addition, when the nutrient infusion tube 10 is installed on the nutrient infusion device 20, the second flap 1543c may be closer to the bottom surface 151b of the support plate 15 than the first flap 1543b. The second flap 1543c can be used to block the peristaltic tube 11 from disengaging from the installation groove 155. By setting the distance between the first flap 1543b and the connecting portion 1541 to be less than the distance between the second flap 1543c and the connecting portion 1541, and / or by making the size of the second flap 1543c larger than the size of the first flap 1543b, etc., the area surrounded by the second flap 1543c in the circumferential direction of the peristaltic tube 11 is larger, which is beneficial for the second flap 1543c to achieve a better blocking effect.

[0077] In the embodiments of the present application, the maximum distance between the two support portions 1543 may be in the range of 24 mm to 34 mm. Exemplarily, the maximum distance between the two support portions 1543 may be 24 mm, 26 mm, 30 mm, 34 mm, etc. By setting the range of the maximum distance between the two support portions 1543, it can ensure that the length of the support member 154 is sufficient to support the peristaltic tube 11 while preventing the support member 154 from being too large, resulting in interference with other structural members on the nutrient infusion device when the support member 154 deforms during the installation process. In other embodiments, the maximum distance between the two support portions 1543 in the first direction may also be set according to actual needs, and the present application does not limit this.

[0078] Please refer to Figure 2 and Figure 3 As shown, on the mounting surface 211, structures such as bosses or grooves can also be provided to divide the mounting space 23 into several interconnected regions with different depths, so as to better arrange and install structural members of different sizes in the mounting space 23. In some examples, the mounting space 23 can include a first mounting space 23a, a second mounting space 23b, and a third mounting space 23c that are sequentially connected in the Z-axis direction. In the Y-axis direction, the depth of the first mounting space 23a is greater than that of the second mounting space 23b, and the depth of the third mounting space 23c is greater than that of the second mounting space 23b. Exemplarily, in the embodiments of the present application, the mounting surface 211 can also be considered to be divided into a first mounting surface 211a, a second mounting surface 211b, and a third mounting surface 211c. The first mounting surface 211a is located in the first mounting space 23a, the second mounting surface 211b is located in the second mounting surface 211b, and the third mounting surface 211c is located in the third mounting surface 211c. The first mounting surface 211a, the second mounting surface 211b, and the third mounting surface 211c have the same orientation and are staggered from each other.

[0079] In the embodiments of the present application, the roller 241 can be arranged in the first mounting space 23a, and the tube groove 25 can be arranged on the second mounting surface 211b of the second mounting space 23b. As Figure 2 shown, when the nutrient infusion tube 10 is installed in place, the support plate 15 can be located in the third mounting space 23c, and part of the peristaltic tube 11 is embedded in the tube groove 25 in the second mounting space 23b. The peristaltic tube 11 can be straightened and kept in contact with at least part of the roller 241. Among them, the first mounting space 23a, the second mounting space 23b, and the third mounting space 23c can also be divided into multiple sub-mounting spaces with different depths, and the present application does not limit this. In other embodiments, the dimensional relationship of the first mounting space 23a, the second mounting space 23b, and the third mounting space 23c can be different from that in the embodiments of the present application, and the mounting space 23 can be divided into more or fewer regions, and the present application does not limit this.

[0080] In some embodiments, one of the nutrient infusion device 20 and the support plate 15 includes a guide rail, and the other includes a guide groove; for applying an external force to make the support plate 15 move in a direction away from the roller 241 to reach a preset position, the support plate 15 can be made to move in a direction perpendicular to the first direction and move along the matching track of the guide rail and the guide groove to reach the preset position. Through the cooperation of the guide rail and the guide groove, the movement track of the support plate 15 can be limited, and the accuracy of the installation position of the support plate 15 is improved.

[0081] For example, please refer to Figure 3 andFigure 5 In the embodiment of the present application, the nutrition infusion device 20 may include a guide rail 30, and the support plate 15 may include a guide groove 31. During the process of applying an external force to move the support plate 15 in a direction away from the roller 241, the guide rail 30 can be embedded in the guide groove 31, and the support plate 15 can move along the extension path of the guide rail 30. In other embodiments, the nutrition infusion device 20 may include a guide groove 31, and the support plate 15 may include a guide rail 30. During the process of applying an external force to move the support plate 15 in a direction away from the roller 241, the guide rail 30 can be embedded in the guide groove 31, and the support plate 15 can move along the extension path of the guide groove 31. Wherein, the guide groove 31 may be provided between two mounting grooves 155. In other embodiments, the number of the guide grooves 31 provided on the support plate 15 may also be two, three or more, and the guide groove 31 may also be provided at other positions on the support plate 15. The present application does not limit this.

[0082] Exemplarily, the moving direction of the support plate 15 may include a second direction and a third direction, and any two of the first direction, the second direction and the third direction are perpendicular to each other; the guide rail 30 may include a first guide rail 301 and a second guide rail 302. The first guide rail 301 is closer to the roller 241 than the second guide rail 302. There is a stepped shape between the first guide rail 301 and the second guide rail 302, and the extension directions of the first guide rail 301 and the second guide rail 302 are both parallel to the second direction.

[0083] In the embodiment of the present application, the first guide rail 301 may be installed on the second mounting surface 211b in the second mounting space 23b, and the extension direction of the first guide rail 301 may be parallel to the Z-axis direction. The second guide rail 302 may be installed on the third mounting surface 211c in the third mounting space 23c, and the extension direction of the second guide rail 302 may be parallel to the Z-axis direction. Wherein, the third mounting space 23c is "sunk" relative to the second mounting space 23b, that is, there is a stepped shape between the first guide rail 301 and the second guide rail 302, and the first guide rail 301 protrudes relative to the second guide rail 302.

[0084] Adaptively, the guide groove 31 may include a first guide groove 311 and a second guide groove 312 arranged along the second direction (i.e., the Z-axis direction). When the nutrition infusion tube 10 is installed on the nutrition infusion device 20, the first guide groove 311 is closer to the roller 241 than the second guide groove 312. There may also be a stepped shape between the first guide groove 311 and the second guide groove 312, and the second guide groove 312 may protrude relative to the first guide groove 311 and cooperate with the step between the first guide rail 301 and the second guide rail 302.

[0085] After the nutrition infusion tube 10 is installed on the nutrition infusion device 20, when an external force is applied to make the support plate 15 move in the second direction, the first guide rail 301 is embedded in the first guide groove 311. When an external force is applied to make the support plate 15 move in the third direction, the connection between the first guide groove 311 and the second guide groove 312 abuts against the connection between the first guide rail 301 and the second guide rail 302.

[0086] By setting the cooperation of the continuously arranged guide rails 30 and guide grooves 31, during the movement of the support plate 15, the guide rails 30 can support and limit the movement of the support plate 15, improving the accuracy of the installation position of the nutrition infusion tube 10 during the installation process on the nutrition infusion device 20. Moreover, by setting the guide groove 31 in a stepped shape, the thickness of the support plate 15 at the second guide groove 312 can be made thinner, which is beneficial to saving manufacturing costs.

[0087] In some examples, the guide rail 30 may further include a third guide rail 303. The third guide rail 303 can be connected between the first guide rail 301 and the second guide rail 302. The third guide rail 303 can be perpendicular to the second mounting surface 211b and the third mounting surface 211c. The third guide rail 303 serves as a transition section, which is beneficial to avoiding the process of the support plate 15 hanging and falling. When the support plate 15 moves in the third direction (i.e., the Y-axis direction), it can support and limit the support plate 15.

[0088] In some other embodiments, the first guide rail 301 and the second guide rail 302 may also be linearly connected. In other words, in some other embodiments, the guide rail 30 may not include the third guide rail 303. This application does not make any limitations in this regard. In addition, when the nutrition infusion device 20 includes a guide groove and the support plate 15 is provided with a guide rail, the guide rail may also be formed by connecting multiple tracks with different dimensions or a straight-connected track. It can be set according to actual needs, and this application does not make any limitations in this regard.

[0089] In some embodiments, such as Figure 7 shown, the top surface 151a of the support plate 15 (as Figure 4 shown) may be provided with a slope 151c. The angle between the slope 151c and the bottom surface 151b of the support plate 15 (as Figure 5 shown) is an acute angle. In the embodiments of this application, the slope 151c can also be considered to extend upward from the side of the support plate 15 close to the roller 241 to the side of the support plate 15 away from the roller 241.

[0090] By setting the slope 151c, the slope 151c can be used as a fulcrum to apply an external force to make the support plate 15 move in a direction away from the roller 241. The slope 151c can decompose the force applied by the operator thereon into a force component parallel to the mounting surface 211 of the nutrition infusion device 20 for pushing / pulling the support plate 15 to lengthen the peristaltic tube 11, and a force component perpendicular to the nutrition infusion device 20 for making the support plate 15 close to the nutrition infusion device 20, so that the support plate 15 always sticks to the mounting surface 211 of the nutrition infusion device 20, thereby avoiding the problem in the prior art that the operator needs to hold the two ends of the support plate 15 by hand to move the support plate 15, and the force component in the direction of the force easily causes the support plate 15 to separate from the nutrition infusion device 20, thereby improving the reliability of the installation process.

[0091] Please refer to Figure 3 and Figure 4 In some embodiments, the nutrition infusion device 20 may further include a fixing component 26, which may be fixed to the housing 21 and located on the side of the tube groove 25 away from the roller 241. Exemplarily, a through hole or the like may be provided in the fixing component 26, and the support plate 15 of the nutrition infusion tube 10 may include a protrusion 152, which may be fixed to the side of the plate body 151 facing the fixing component 26, and the protrusion 152 may be embedded in the fixing component 26 to fix the relative position of the support plate 15 and the fixing component 26, thereby limiting the relative position of the nutrition infusion tube 10 and the nutrition infusion device 20. The protrusion 152 and the plate body 151 may be an integrated structure, or an integrated structure formed by welding, gluing, or the like. The protrusion 152 can be made of materials such as acrylonitrile butadiene styrene (ABS) resin, which has high strength and toughness. The present application does not specifically limit the materials of the protrusion 152 and the plate body 151. In other embodiments, the protrusion 152 can also be located at other positions of the plate body 151, or the nutrient infusion tube 10 can also not include the protrusion 152, and the support plate 15 of the nutrient infusion tube 10 can cooperate with the fixing component 26 through other structures to achieve position limiting, which is not limited in the present embodiment of the application.

[0092] It can be understood that during the process of embedding the protrusion 152 into the fixing component 26, the protrusion 152 can be squeezed and deformed due to its certain elasticity. When the support plate 15 is installed in place, the protrusion 152 can be restored to its original state and snapped into the fixing component 26. Alternatively, the protrusion 152 can still be in a compressed state, and the deformation recovery force of the protrusion 152 can also be used to push against the fixing component 26 to improve the tightness of the connection between the fixing component 26 and the protrusion 152.

[0093] In some embodiments, the nutrition infusion device 20 may further include a locking member 27. The support plate 15 may be provided with a locking hole 153, and the locking member 27 may be embedded in the locking hole 153 to limit the nutrition infusion tube 10. Among them, the locking member 27 may be slidably or rotatably connected to the housing 21. By rotating or moving the locking member 27, the support plate 15 can be limited in other directions. It can be understood that, for example, in the embodiments of the present application, as Figure 2 shown, the locking hole 153 is provided with a first baffle and a second baffle spaced along the Z-axis direction. In the initial position, the locking member 27 may extend along the X-axis direction. At this time, the locking member 27 may be embedded in the space between the first baffle and the second baffle to prevent the support plate 15 from moving relative to the housing 21 in the Z-axis direction. By rotating the locking member 27 and changing the position of the locking member 27, the locking member 27 can also be extended along the Z-axis and abutted between the first baffle and the second baffle to prevent the support plate 15 from moving relative to the housing 21 in the Y-axis direction. The embodiments of the present application do not limit the connection manner between the locking member 27 and the housing 21, the relative position between the locking member 27 and the locking hole 153, etc. In some other embodiments, the nutrition infusion system 1 may not include the locking member 27 and the locking hole 153 either, and the present application does not limit this either.

[0094] In some embodiments, the nutrition infusion device 20 may further be provided with a switching member 28. A reversing groove 121 may be provided on the valve structure of the nutrition infusion tube 10, and the switching member 28 may be embedded in the reversing groove 121 of the valve structure to drive the valve core of the valve structure to rotate, thereby controlling the switching of the valve core between different positions to achieve the on / off and switching of the fluid passage in the nutrition infusion tube 10, which is beneficial to reducing the difficulty for the operator to use the nutrition infusion system 1.

[0095] In some embodiments, a magnet 16 may further be provided in the nutrition infusion tube 10 (such as Figure 6As shown (not shown in the figure), a detection element (not shown in the figure) may be provided in the nutrient infusion device 20. The detection element may be a Hall sensor. Using the Hall effect principle, the Hall sensor can feedback the magnitude of the magnetic field around it through the output Hall voltage value. When the nutrient infusion tube 10 is installed in the nutrient infusion device 20, there is a difference between the voltage value output by the Hall sensor and the voltage value output by the Hall sensor when it is not installed, thereby realizing the detection of the installation state of the nutrient infusion tube 10. In addition, the Hall sensor can also be used to identify the type of the nutrient infusion tube 10 installed on the nutrient infusion device 20. For example, when the valve structure in the nutrient infusion tube 10 is a two-way valve, the "N" pole of the magnet 16 in the nutrient infusion tube 10 can be set to face the Hall sensor. Another example is that when the valve structure in the nutrient infusion tube 10 is a three-way valve, the "S" pole of the magnet in the nutrient infusion tube 10 can be set to face the Hall sensor. Thus, when different nutrient infusion tubes 10 are installed on the same nutrient infusion device 20, the Hall voltage values detected by the Hall sensor are also different, so as to identify different types of nutrient infusion tubes 10. In some other embodiments, it is also possible to detect whether the nutrient infusion tube 10 is installed thereon by setting a touch switch, a photoelectric sensor, etc. in the nutrient infusion device 20.

[0096] In the foregoing embodiments, taking the example of providing the support member 154 in the support plate, corresponding designs for the nutrient infusion tube 10 have been made. In other embodiments, the nutrient infusion tube 10 may not include the support member 154, and it is also possible to prevent the output end 112 of the peristaltic tube 11 from approaching the input end 111 of the peristaltic tube 11 in the first direction by changing other structures in the nutrient infusion tube 10. For example:

[0097] Please refer to Figure 10 , Figure 10 which is a schematic structural diagram of another nutrient infusion tube 10 provided by an embodiment of the present application.

[0098] In some embodiments, the input tube connector 12 may include a first part 122 and a second part 123. The first part 122 communicates with at least one delivery tube 14, and the second part 123 communicates with the input end 111 of the peristaltic tube 11. The second part 123 extends away from the output tube connector 13 relative to the first part 122; and / or, the output tube connector 13 may include a third part 131 and a fourth part 132. The fourth part 132 communicates with the output end 112 of the peristaltic tube 11. The fourth part 132 extends away from the input tube connector 12 relative to the third part 131. By changing the shape of the input tube connector 12 and / or the input tube connector 12, it can also be used to prevent the output end 112 of the peristaltic tube 11 from approaching the input end 111 of the peristaltic tube 11 in the first direction, so that the maximum distance L1 between any two points of the peristaltic tube 11 in the first direction in the normal state can be greater than or equal to the maximum distance L2 between any two points of the roller 241.

[0099] It is understandable that Figure 10 in the second part 123 is located within the installation groove 155, and the second part 123 is also located inside the installation groove 155. In some embodiments, the second part 123 can also be flush with or protrude from the installation opening 155a; and / or, the fourth part 132 is installed in another installation opening 155a and is flush with or protrudes from the other installation opening 155a. The closer the second part 123 is to the roller 241, the stronger the supporting force of the second part 123 on the peristaltic tube 11 and the greater the influence on its shape, and the closer the fourth part 132 is to the roller 241, the stronger the supporting force of the fourth part 132 on the peristaltic tube 11 and the greater the influence on its shape. By setting the second part 123 and / or the fourth part 132 to be flush with or protrude from the installation opening 155a, it is beneficial to ensure that the maximum distance L1 between any two points of the peristaltic tube 11 in the normal state is greater than the maximum distance L2 between any two points of the roller 241 (such as Figure 2 shown).

[0100] In some other embodiments, it is also possible to make the maximum distance L1 between any two points of the peristaltic tube 11 in the normal state greater than the maximum distance L2 between any two points of the roller 241 by changing the shape of the groove or space for installing the input tube connector 12 and / or the output tube connector 13 on the support plate 15, etc. The present application does not limit this.

[0101] The above are only some embodiments and implementation manners of the present application. The protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application, and all should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A nutrition infusion tube, characterized in that: It comprises a peristaltic tube, an input tube connector, an output tube connector, a delivery tube and a support plate; the input tube connector and the output tube connector are both fixed to the support plate, one end of the input tube connector is connected to the input end of the peristaltic tube, and the other end is connected to at least one delivery tube, one end of the output tube connector is connected to the output end of the peristaltic tube, and the other end is connected to another delivery tube; The support plate includes a plate body and two support members, the input tube connector and the output tube connector are both fixed to the plate body, the two support members are spaced apart on the same side of the plate body or the two support members are respectively arranged on the corresponding two sides of the plate body, one of the support members abuts against the input end of the peristaltic tube, and the other support member abuts against the output end of the peristaltic tube to prevent at least part of the input end of the peristaltic tube and at least part of the output end of the peristaltic tube from approaching each other in the direction toward the center line of the plate body.

2. The nutrition infusion tube according to claim 1, characterized in that: The two support members are located between the input end of the peristaltic tube and the output end of the peristaltic tube.

3. The nutrition infusion tube according to claim 1, characterized in that: The support member includes a connecting portion and a supporting portion, the connecting portion is fixedly connected to the plate body, the supporting portion is spaced apart from the plate body, and the supporting portion abuts against the input end of the peristaltic tube or the output end of the peristaltic tube.

4. The nutrition infusion tube according to claim 3, characterized in that: The nutrition infusion tube further includes a bending portion, the bending portion is connected between the connecting portion and the supporting portion, and the bending portion is curved; and / or, along the connection direction of the connecting portion, the bending portion and the supporting portion, the width of the bending portion is smaller than the width of the connecting portion and / or the width of the supporting portion; And / or, a hollow area is provided in the bending portion.

5. The nutrition infusion tube according to claim 3, characterized in that: The plate body has a mounting opening, the peristaltic tube is mounted on the mounting opening, and the orthographic projection of the support portion in a direction toward the plate body covers at least a portion of the mounting opening.

6. The nutrition infusion tube according to claim 3, characterized in that: The maximum distance between the two support parts is in the range of 24 mm to 34 mm.

7. The nutrition infusion tube according to claim 3, characterized in that: The support portion includes a main body, a first baffle and a second baffle, wherein the first baffle and the second baffle are fixed on two opposite sides of the main body, and the peristaltic tube is located on the main body between the first baffle and the second baffle.

8. The nutrition infusion tube according to claim 7, characterized in that: The plate body has a top surface and a bottom surface, the peristaltic tube is closer to the bottom surface of the support plate than the top surface of the support plate, and the second baffle is arranged closer to the bottom surface relative to the first baffle; The orthographic projection of the first baffle in the direction toward the surface of the second baffle is staggered with the second baffle; The distance between the first blocking piece and the connecting portion is smaller than the distance between the second blocking piece and the connecting portion, and / or the size of the second blocking piece is larger than the size of the first blocking piece.

9. The nutrition infusion tube according to claim 1, characterized in that: The two ends of the peristaltic tube are axially symmetrical with the center line of the plate body as the symmetry axis, and the two support members are axially symmetrical with the center line of the plate body.

10. The nutrition infusion tube according to claim 1, characterized in that: The support member is made of acrylonitrile-butadiene-styrene copolymer resin material.

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