Nutrition infusion device

Abstract

A nutrition infusion device relates to the field of medical equipment and comprises a pump body, a door body and a door spindle, and the door body is movably connected with the pump body through the door spindle. The pump body is provided with a lock catch, a mounting panel and a pipe groove formed in the mounting panel, and the pipe groove is used for mounting at least part of a nutrition infusion pipe and providing a detection position; the door body is provided with a lock assembly, the lock assembly comprises a first sliding block and a pipe pressing block, the pipe pressing block is arranged on the surface facing the pump body, the lock assembly is configured to be at the locking position, the pipe pressing block abuts against the open end of the pipe groove, and the first sliding block abuts against the lock catch. According to the nutrition infusion device, the pipe pressing block is arranged on the door body of the nutrition infusion device, the nutrition infusion pipe can be pressed into the pipe groove through the pipe pressing block while the door body is closed, the action that a user manually presses the nutrition infusion pipe into the pipe groove is omitted, operation of the user is facilitated, and meanwhile the size of the nutrition infusion device can be reduced.

Description

Technical Field

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

[0002] In the field of medical devices, enteral nutrition pumps are used to provide liquid nutrition for patients who are unable to eat. An enteral nutrition pump system usually includes a nutritional infusion device. After the nutritional infusion tube is installed on the nutritional infusion device, the enteral nutrition pump system can be used. Since there are a series of tube grooves on the nutritional infusion device, and the tube grooves are used to set detection sensors such as pressure and bubbles. To effectively detect signals such as bubbles and pressure, the width of the tube groove is generally smaller than the diameter of the nutritional infusion tube. Therefore, when installing the nutritional infusion tube, the user needs to manually press the nutritional infusion tube into the corresponding tube groove, which makes the user operation relatively inconvenient. Utility Model Content

[0003] This application provides a nutritional infusion device. By setting a tube pressing block on the door body of the nutritional infusion device, the tube pressing block can press the nutritional infusion tube into the tube groove while the door body is closed, eliminating the need for the user to manually press the nutritional infusion tube into the tube groove, facilitating the user's operation, and at the same time helping to reduce the volume of the nutritional infusion device.

[0004] In a first aspect, this application provides a nutritional infusion device for use in conjunction with a nutritional infusion tube. The nutritional infusion device includes a pump body, a door body, and a door shaft. The door body is movably connected to the pump body through the door shaft; a lock, a mounting panel, and a tube groove provided on the mounting panel are arranged on the pump body. The tube groove is used to install at least part of the nutritional infusion tube and provide a detection position; a lock assembly is arranged on the door body. The lock assembly includes a first slider and a tube pressing block. The tube pressing block is arranged on the surface facing the pump body. The lock assembly is configured such that in the locked position, the tube pressing block abuts against the open end of the tube groove, and the first slider abuts against the lock.

[0005] By providing a pump body, a door body, and a door shaft in the nutritional infusion device, the door body can be hinged to the pump body through the door shaft, and thus the rotation of the door body relative to the pump body can be realized; after the door body and the pump body are closed, the lock assembly and the lock on the pump body form a locking relationship, and the tube pressing block arranged on the door body can press the nutritional infusion tube into the tube groove. This enables the nutritional infusion device to simultaneously achieve the functions of locking the door body and pressing the nutritional infusion tube into the tube groove, facilitating the user's operation. At the same time, integrating the tube pressing block with the lock assembly helps to reduce the volume of the nutritional infusion device and realize the miniaturization of the nutritional infusion device.

[0006] In a possible implementation, the lock assembly further includes a second slider and a first elastic member. The door body includes a door panel and a first blocking wall, the door panel intersects with the first blocking wall, and an opening is provided on the door panel. A first portion of the first slider abuts against the first blocking wall through the first elastic member, and a second portion of the first slider is configured to abut against the lock catch in the locked position and disengage from the lock catch in the unlocked position. One end of the second slider passes through the opening and is movably abutted against the first slider, and the other end of the second slider is a free end. The second slider is configured to, when moving in the direction towards the first slider, squeeze the first slider to move in the direction towards the first elastic member, so that it switches from the locked position to the unlocked position. By providing the second slider and the first elastic member in the lock assembly, and providing the door panel and the first blocking wall in the door body, wherein the second portion of the first slider is configured to abut against the lock catch in the locked position and disengage from the lock catch in the unlocked position, one end of the second slider passes through the opening and is movably abutted against the first slider, and the other end of the second slider is a free end, a stable locking relationship can be formed between the first slider on the door body and the lock catch on the pump body. When the second slider moves in the direction towards the first slider, the first slider can displace in the direction towards the first elastic member and the first blocking wall, that is, away from the lock catch, and further the first slider can reach the unlocked position to release the locking relationship with the lock catch, so as to conveniently and quickly release the locking relationship between the door body and the pump body.

[0007] In a possible implementation, the lock assembly further includes a second elastic member. One end of the second elastic member abuts against the door panel, and the other end of the second elastic member abuts against the mounting panel. When the first slider switches from the locked position to the unlocked position, the second elastic member pushes the door body to move in the direction away from the pump body. By providing the second elastic member in the lock assembly, wherein one end of the second elastic member abuts against the door panel and the other end of the second elastic member abuts against the mounting panel, when the first slider and the lock catch are locked with each other, that is, when the first slider is in the locked position, the restoring force applied by the second elastic member on the door body in the direction away from the pump body cancels out the supporting force applied by the lock catch on the door body in the direction towards the pump body. When the first slider is in the unlocked position, that is, when it no longer locks with the lock catch, the supporting force in the direction towards the pump body disappears, and the restoring force pushes the door body to move in the direction away from the pump body, thereby realizing the automatic opening of the door body. This automatic process eliminates the need for the user to apply an additional force to the door body to open the door, improving the convenience of opening the door body.

[0008] In a possible implementation, the abutting surface of the first slider and the second slider is a first inclined surface. Along the direction in which the second slider moves towards the first slider, the first inclined surface is gradually inclined away from the first elastic member. By making the abutting surface of the first slider and the second slider a first inclined surface, wherein along the direction in which the second slider moves towards the first slider, the first inclined surface is gradually inclined away from the first elastic member, the second slider can apply a thrust force on the first slider towards the first blocking wall, that is, away from the lock, which is beneficial to releasing the locking relationship between the first slider and the lock.

[0009] In a possible implementation, the abutting surface of the second slider and the first slider is a second inclined surface, and the second inclined surface is arranged parallel to the first inclined surface. By making the abutting surface of the second slider and the first slider, that is, the second inclined surface, parallel to the first inclined surface, the abutting area between the first slider and the second slider can be increased, so that the second slider can apply a more uniform thrust force on the first slider towards the first blocking wall, that is, away from the lock, which is beneficial to quickly releasing the locking relationship between the first slider and the lock.

[0010] In a possible implementation, the abutting surface of the second slider and the first slider is an arc surface, and the arc surface is in line contact with the first slider. By making the abutting surface of the second slider and the first slider an arc surface, a line contact is formed between the arc surface and the first slider. This enables the second slider to apply a uniform thrust force on the first slider while reducing the frictional force between the abutting surfaces of the second slider and the first slider, reducing the force required to unlock the first slider and the lock on the second slider, which is beneficial to unlocking the door body.

[0011] In a possible implementation, a second blocking wall is provided on the lock assembly or the door body. The second elastic member includes a top pin and a spring. One end of the top pin abuts against one side of the door panel facing the pump body through the spring. The other end of the top pin is a free end. In the locked position, the free end of the top pin abuts against the mounting panel, so that the top pin is separated from the second blocking wall and the spring is in a compressed state. In the unlocked position, at least a part of the top pin abuts against the second blocking wall and the spring is in a pre-tightened state. During the process of switching from the locked position to the unlocked position, the spring switches from the compressed state to the pre-tightened state, thereby applying a resilience force to the door panel. By providing a second blocking wall on the lock assembly or the door body, and providing a top pin and a spring in the second elastic member, wherein one end of the top pin abuts against one side of the door panel facing the pump body through the spring, and the other end of the top pin is a free end. When the first slider and the lock catch are locked with each other, that is, when the first slider is in the locked position, the free end of the top pin abuts against the mounting panel, so that the top pin is separated from the second blocking wall and the spring is in a compressed state. The resilience force of the spring cancels out the supporting force applied by the lock catch. When the first slider is in the unlocked position, that is, when it is no longer locked with the lock catch, the supporting force towards the pump body disappears. The resilience force of the spring acts on the mounting panel through the free end of the top pin, pushing the door body to move away from the pump body, thereby realizing the automatic opening of the door body. At this time, the spring is in a pre-tightened state, and at least a part of the top pin abuts against the second blocking wall. Therefore, the spring and the top pin will not rebound further. This automatic process eliminates the need for the user to apply an additional force to the door body to open it, improving the convenience of opening the door body.

[0012] In a possible implementation, the lock assembly includes a cover plate, and the cover plate is provided with the integrally formed tube pressing block. By providing a cover plate in the lock assembly, wherein the cover plate is provided with an integrally formed tube pressing block. When closing the door body, the tube pressing block can press the nutrient infusion tube into the tube groove on the mounting panel, eliminating the need for the user to manually press the nutrient infusion tube into the corresponding tube groove.

[0013] In a possible implementation, the top surface of the tube pressing block is an arc surface. By using a tube pressing block with an arc surface on the top surface, when closing the door body, the most prominent part of the arc surface, that is, the part of the arc surface closest to the infusion tube contacts the nutrient infusion tube and presses the nutrient infusion tube into the tube groove, avoiding the situation that the tube pressing block contacts the nutrient infusion tube before reaching the effective action position and pushes the nutrient infusion tube away from the tube groove.

[0014] In one possible implementation, the pump body further includes an ultrasonic sensor, where the ultrasonic sensor includes an ultrasonic transmitting end and an ultrasonic receiving end, and the ultrasonic transmitting end and the ultrasonic receiving end are respectively arranged along both sides of the opening end for detecting the bubble state in the nutrient infusion tube located in the tube groove; and / or the pump body further includes a pressure sensor, and the detection end of the pressure sensor is arranged on the side wall of the tube groove for detecting the blockage state of the nutrient infusion tube located in the tube groove. Description of the Drawings

[0015] Figure 1 is a schematic structural diagram of a nutrient infusion device provided by an embodiment of the present application;

[0016] Figure 2 is an exploded view of a lock assembly provided by an embodiment of the present application;

[0017] Figure 3 is a schematic diagram of a mating structure of the lock assembly and the pump body provided by an embodiment of the present application;

[0018] Figure 4 is another schematic diagram of a mating structure of the lock assembly and the pump body provided by an embodiment of the present application;

[0019] Figure 5 is a schematic structural diagram of the pump body of a nutrient infusion device provided by an embodiment of the present application.

[0020] Reference Numerals

[0021] 1 - Nutrient infusion device; 2 - Door body; 21 - Lock assembly; 211 - First slider; 2111 - First inclined surface; 2112 - First guiding surface; 2113 - First locking surface; 212 - Second slider; 2121 - Second inclined surface; 213 - First elastic member; 214 - Second elastic member; 215 - Thumb pin; 216 - Spring; 217 - Cover plate; 218 - Tube pressing block; 22 - Door panel; 221 - Opening; 23 - First blocking wall; 24 - Second blocking wall; 25 - Magnetic member; 3 - Door hinge; 4 - Pump body; 41 - Lock catch; 411 - Second guiding surface; 412 - Second locking surface; 42 - Mounting panel; 43 - Tube groove; 431 - Opening end; 5 - Nutrient infusion tube. Detailed Embodiments

[0022] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0023] All the technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the technical field to which this application pertains. The directional terms mentioned in the embodiments of this application, such as "upper", "lower", "inner", "outer", etc., are only with reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer illustration and understanding of the embodiments of this 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 should not be construed as a limitation on the embodiments of this application.

[0024] In the description of the embodiments of this application, it should be noted that, unless otherwise clearly specified and defined, 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. In the embodiments of this 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.

[0025] It should be understood that the term "and / or" used herein is only a description of the same field of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0026] The reference to "in some embodiments" etc. described in this specification means that in one or more embodiments of this application, the specific features, structures or characteristics described in connection with that embodiment are included. Thus, the statements "in some embodiments" etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The term "comprising" and its variations mean "including but not limited to", unless otherwise specifically emphasized in other ways.

[0027] In the field of medical devices, enteral nutrition pumps are used to provide liquid nutrition for patients who are unable to eat. An enteral nutrition pump system usually includes a nutrition infusion device, and the nutrition infusion device generally has a door structure. Most of the existing door bodies of the infusion device rely on the structural deformation of the material itself to achieve the locking of the door body, but the reliability of this structure is poor, and it is easy to open automatically when the infusion device vibrates, collides, or falls, affecting the normal operation of the device. How to simply and quickly unlock and open the door body on the premise of realizing the stable locking of the door body of the nutrition infusion device is an urgent problem to be solved. For this reason, the present application proposes a nutrition infusion device. By arranging a mechanical locking device and an unlocking device in the nutrition infusion device, the stable locking of the door body of the nutrition infusion device can be effectively realized, and the door body can be unlocked and opened conveniently and quickly. The embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0028] Figure 1 FIG. 4 is a schematic structural diagram of a nutrition infusion device 1 provided by an embodiment of the present application. Figure 2 FIG. 6 is an exploded view of a lock assembly 21 provided by an embodiment of the present application. Figure 3 FIG. 8 is a schematic diagram of a mating structure between the lock assembly 21 and the pump body 4 provided by an embodiment of the present application. With reference to Figure 1 、 Figure 2 and Figure 3 shown, the nutrition infusion device 1 can be used in conjunction with a nutrition infusion tube. The nutrition infusion device 1 can include a pump body 4, a door body 2, and a door shaft 3. The door body 2 can be movably connected to the pump body 4 through the door shaft 3; a lock catch 41, a mounting panel 42, and a tube slot 43 provided on the mounting panel 42 can be provided on the pump body 4. The tube slot 43 can be used to install at least a part of the nutrition infusion tube and provide a detection position; a lock assembly 21 can be provided on the door body 2. The lock assembly 21 can include a first slider 211 and a tube pressing block 218. The tube pressing block 218 can be provided on the surface facing the pump body 4. The lock assembly 21 can be configured to be in a locked position, the tube pressing block 218 can abut against the open end 431 of the tube slot 43, and the first slider 211 can abut against the lock catch 41.

[0029] By providing a pump body 4, a door body 2 and a door hinge 3 in the nutritional infusion device 1, the door body 2 can be hinged to the pump body 4 through the door hinge 3, thereby enabling the door body 2 to rotate relative to the pump body 4; by providing a latch 41 on the pump body 4 and a lock assembly 21 on the door body 2, wherein the lock assembly 21 can be configured to be in a locked position, the lock assembly 21 can include a first slider 211, and the first slider 211 can abut against the latch 41, so that the door body 2 can be firmly locked to the pump body 4. By releasing the abutting and locking state between the first slider 211 and the latch 41, the locking relationship between the door body 2 and the pump body 4 can be conveniently and quickly released. At the same time, a tube pressing block 218 provided on the lock assembly 21 or on other parts of the door body 2 except the lock assembly 21 can press at least a part of the nutritional infusion tube into the tube groove 43, eliminating the need for the user to manually press the nutritional infusion tube into the tube groove 43. At the same time, the position corresponding to the lock assembly 21 can be used to provide the tube groove 43, without the need to intentionally avoid the position corresponding to the lock assembly 21 when providing the tube groove 43, which is beneficial to reducing the volume of the nutritional infusion device 1, thereby realizing the miniaturization of the nutritional infusion device 1.

[0030] Combined Figure 2 with Figure 3 As shown, in a possible implementation, the lock assembly 21 may further include a second slider 212 and a first elastic member 213. The door body 2 may include a door panel 22 and a first blocking wall 23. The door panel 22 may intersect with the first blocking wall 23. Schematically, the plane where the door panel 22 is located and the plane where the first blocking wall 23 is located may be perpendicular to each other or at other angles. In a possible implementation, the door panel 22 and the first blocking wall 23 may be an integrally formed structure. An opening 221 may be provided on the door panel 22; a first part of the first slider 211 may abut against the first blocking wall 23 through the first elastic member 213, and a second part of the first slider 211 may be configured to abut against the latch 41 in the locked position and disengage from the latch 41 in the unlocked position; one end of the second slider 212 may pass through the opening 221 to movably abut against the first slider 211, and the other end of the second slider 212 may be a free end. The second slider 212 may be configured to, when moving in the direction towards the first slider 211, squeeze the first slider 211 to move in the direction towards the first elastic member 213, so that the first slider 211 can be switched from the locked position to the unlocked position.

[0031] By providing a second slider 212 and a first elastic member 213 in the lock assembly 21, and a door panel 22 and a first blocking wall 23 in the door body 2, wherein a first part of the first slider 211, the first elastic member 213, and the first blocking wall 23 can be connected in sequence. Illustratively, the first elastic member 213 can be columnar, and the first part and the second part of the first slider 211 can be arranged along the axis direction of the first elastic member 213. The second part can be configured to abut against the lock catch 41 in the locked position and disengage from the lock catch 41 in the unlocked position, which enables the first slider 211 to form a stable locking relationship with the lock catch 41. One end of the second slider 212 passes through the opening 221 and is in movable abutment with the first slider 211. The other end of the second slider 212 is a free end, and the other end and the first slider 211 can be respectively located on opposite sides of the opening 221. When the other end of the second slider 212 is pressed, the second slider 212 can move towards the first slider 211, and the first slider 211 can displace in the direction towards the first elastic member 213 and the first blocking wall 23, i.e., away from the lock catch 41. Eventually, the first slider 211 can reach the unlocked position to release the locking relationship with the lock catch 41, which can conveniently and quickly release the locking relationship between the door body 2 and the pump body 4.

[0032] Combined with Figure 2 and Figure 3 As shown, in a possible implementation, the first slider 211 can have a channel, and the channel can be located between the first part and the second part of the first slider 211. One end of the second slider 212 can extend into the channel after passing through the opening 221 and can abut against a part of the inner wall of the channel, and the part of the inner wall can be a part of the surface of the first part. When the second slider 212 moves towards the first slider 211, the second slider 212 can move in the channel in the direction away from the opening 221, and at the same time, the second slider 212 can form a thrust on the first part, and the direction of the thrust can be away from the second part. Therefore, the first slider 211 can displace in the direction away from the lock catch 41 under the action of the thrust, and finally release the locking relationship with the lock catch 41.

[0033] Figure 4 is another schematic diagram of the mating structure of the lock assembly and the pump body provided by the embodiment of the present application. Combined with Figure 4 and Figure 3As shown, in a possible embodiment, the lock assembly 21 may further include a second elastic member 214, one end of which may abut against the door panel 22, and the other end of which may abut against the mounting panel 42; when the first slider 211 switches from the locked position to the unlocked position, the second elastic member 214 may push the door body 2 to move in a direction away from the pump body 4. By providing the second elastic member 214 in the lock assembly 21, wherein one end of the second elastic member 214 abuts against the door panel 22, and the other end of the second elastic member 214 abuts against the mounting panel 42, when the first slider 211 and the lock buckle 41 are locked with each other, the first slider 211 may be in the locked position, schematically, the first locking surface 2113 of the first slider 211 may abut against the second locking surface 412 of the lock buckle 41, so that the lock buckle 41 may prevent the door body 2 provided with the first slider 211 from moving in a direction away from the pump body 4. When the first slider 211 and the lock buckle 41 are locked with each other, the restoring force applied by the second elastic member 214 on the door body 2 in the direction away from the pump body 4 and the supporting force applied by the lock buckle 41 on the door body 2 toward the pump body 4 can offset each other; when the first slider 211 is in the unlocked position, that is, it is no longer locked with the lock buckle 41, schematically, the abutment state between the first locking surface 2113 of the first slider 211 and the second locking surface 412 of the lock buckle 41 can be released, that is, the first slider 211 no longer contacts the lock buckle 41. At this time, the lock buckle 41 no longer provides a supporting force for the door body 2 toward the pump body 4. The restoring force applied by the second elastic member 214 on the door body 2 can push the door body 2 to move in the direction away from the pump body 4, thereby realizing the automatic opening of the door body 2. This automatic process eliminates the need for the user to apply additional force to the door body 2 to open the door, thereby improving the convenience of opening the door body 2.

[0034] Combination Figure 1 and Figure 3 As shown, in a possible embodiment, when the door body 2 is pushed toward the pump body 4 to close, the first guide surface 2112 of the first slider 211 can abut against the second guide surface 411 of the lock buckle 41 and generate relative sliding. At this time, the first slider 211 can be pushed toward the first blocking wall 23 until the first guide surface 2112 and the second guide surface 411 are no longer abutted, that is, they are completely offset. At this time, the first slider 211 can be rebounded by the first elastic member 213, so that the first locking surface 2113 abuts against the second locking surface 412, and finally the first slider 211 and the lock buckle 41 can be locked with each other.

[0035] See also Figure 3, in a possible implementation, the abutting surface between the first slider 211 and the second slider 212 is a first inclined surface 2111. Along the direction in which the second slider 212 moves towards the first slider 211, the first inclined surface 2111 is gradually inclined away from the first elastic member 213. Schematically, the first inclined surface 2111 can be one surface of the first slider 211. At this time, the first inclined surface 2111 can be in partial contact with the second slider 212, or the first inclined surface 2111 can be one surface of the second slider 212. At this time, the first inclined surface 2111 can be in partial contact with the first slider 211. By making the abutting surface between the first slider 211 and the second slider 212 be the first inclined surface 2111, wherein, along the direction in which the second slider 212 moves towards the first slider 211, the first inclined surface 2111 is gradually inclined away from the first elastic member 213, the pressure applied to the free end of the second slider 212 can generate a component force towards the first blocking wall 23, that is, away from the lock 41, on the first inclined surface 2111. That is, the second slider 212 can cause the first slider 211 to displace towards the first blocking wall 23, that is, away from the lock 41, which is beneficial to releasing the locking relationship between the first slider 211 and the lock 41.

[0036] See Figure 3 , in a possible implementation, the abutting surface between the second slider 212 and the first slider 211 can be a second inclined surface 2121, and the second inclined surface 2121 can be arranged parallel to the first inclined surface 2111. Schematically, the second inclined surface 2121 can be one surface of the second slider 212. At this time, the second inclined surface 2121 can be completely or partially fitted with the first inclined surface 2111 of the first slider 211, or the second inclined surface 2121 can be one surface of the first slider 211. At this time, the second inclined surface 2121 can be completely or partially fitted with the first inclined surface 2111 of the second slider 212. By making the abutting surface between the second slider 212 and the first slider 211, that is, the second inclined surface 2121, be arranged parallel to the first inclined surface 2111, the abutting area between the first slider 211 and the second slider 212 can be increased, so that the second slider 212 can apply a more uniform thrust towards the first blocking wall 23, that is, away from the lock 41, to the first slider 211, which is beneficial to quickly releasing the locking relationship between the first slider 211 and the lock 41.

[0037] In a possible implementation, the abutting surface of the second slider 212 and the first slider 211 can be an arc surface, and the arc surface can be in line contact with the first slider 211. Schematically, the arc surface can be one surface of the first slider 211. At this time, the arc surface can partially abut against the first inclined surface 2111 of the second slider 212, or the arc surface can be one surface of the second slider 212. At this time, the arc surface can partially abut against the first inclined surface 2111 of the first slider 211. By making the abutting surface of the second slider 212 and the first slider 211 an arc surface, a line contact can be formed between the arc surface and the first slider 211 or the second slider 212. While the second slider 212 applies a uniform thrust to the first slider 211, the friction between the abutting surfaces of the second slider 212 and the first slider 211 can be reduced, and the force required to unlock the first slider 211 and the lock catch 41 on the second slider 212 can be reduced, which is beneficial to the unlocking of the door body 2.

[0038] Combined with Figure 3 and Figure 4 As shown, in a possible implementation, a second blocking wall 24 can be provided on the lock assembly 21 or the door body 2. The second elastic member 214 can include a top pin 215 and a spring 216. One end of the top pin 215 can abut against one surface of the door panel 22 facing the pump body 4 through the spring 216, that is, the top pin 215, the spring 216, and the door panel 22 can be connected in sequence. The other end of the top pin 215 can be a free end. In the locked position, the free end of the top pin 215 can abut against the mounting panel 42, so that the top pin 215 is separated from the second blocking wall 24, and the spring 216 can be in a compressed state at this time. In the unlocked position, at least part of the top pin 215 can abut against the second blocking wall 24, and the spring 216 can be in a pre-tightened state. During the process of switching from the locked position to the unlocked position, the spring 216 can switch from the compressed state to the pre-tightened state, so as to apply a resilience force to the door panel 22.

[0039] By providing a second blocking wall 24 on the lock assembly 21 or the door body 2, and providing a top pin 215 and a spring 216 in the second elastic member 214, wherein one end of the top pin 215 can abut against one side of the door panel 22 facing the pump body 4 through the spring 216, and the other end of the top pin 215 can be a free end. When the first slider 211 and the lock catch 41 are locked with each other, the spring 216 can be in a compressed state, and the resilience of the spring 216 and the supporting force applied by the lock catch 41 can cancel each other out; when the first slider 211 is in the unlocked position, that is, it no longer locks with the lock catch 41, the supporting force applied by the lock catch 41 on the door body 2 towards the pump body 4 disappears, and the resilience of the spring 216 can act on the mounting panel 42 through the free end of the top pin 215, pushing the door body 2 to move away from the pump body 4, thereby realizing the automatic opening of the door body 2. At this time, the spring 216 can be in a pre-tensioned state, and at least a part of the top pin 215 can abut against the second blocking wall 24, so the spring 216 and the top pin 215 can no longer rebound further. This automatic process eliminates the need for the user to apply additional force to the door body 2 to open the door, improving the convenience of opening the door body 2.

[0040] The above text has introduced in detail the door body 2 including the lock assembly 21 and the cooperation structure between the door body 2 and the pump body 4. Usually, the enteral nutrition pump system can only be used after the nutrition infusion tube is installed on the nutrition infusion device 1. Since there are a series of tube grooves 43 on the nutrition infusion device 1, and the tube grooves 43 are used to set detection sensors such as pressure and bubbles, in order to effectively detect signals such as bubbles and pressure, the width of the tube grooves 43 is generally smaller than the diameter of the nutrition infusion tube. Therefore, when installing the nutrition infusion tube, it is necessary to manually press the nutrition infusion tube into the corresponding tube groove 43, making it inconvenient for the user to operate.

[0041] In view of this, in combination with Figure 1 and Figure 3 As shown, in a possible implementation manner, the lock assembly 21 can include a cover plate 217, and the cover plate 217 can be provided with an integrally formed tube pressing block 218. Schematically, the door panel 22 and the first blocking wall 23 can form a semi-open groove, and the groove and the cover plate 217 can enclose to form a receiving cavity, and the first slider 211, the first elastic member 213 and a part of the second slider 212 can be located in the receiving cavity. In a possible implementation manner, the tube pressing block 218 can also be an independent component. According to actual needs, the tube pressing block 218 can be assembled to any position on the cover plate 217, the door panel 22 or the door body 2 through any connection method. By providing the cover plate 217 in the lock assembly 21, wherein the cover plate 217 is provided with an integrally formed tube pressing block 218, when closing the door body 2, the tube pressing block 218 can press the nutrition infusion tube into the tube groove 43 on the mounting panel 42, eliminating the need for the user to manually press the nutrition infusion tube into the corresponding tube groove 43.

[0042] In a possible implementation, the number of the pipe pressing blocks 218 can be at least two, and the number of the pipe pressing blocks 218 can be greater than or equal to the number of the pipe grooves 43. For example, if the number of the pipe grooves 43 is two, there can be at least two pipe pressing blocks 218, and at least one pipe pressing block 218 can be correspondingly arranged for each pipe groove 43. The position of the pipe pressing block 218 on the door body 2 can depend on the position of the corresponding pipe groove 43 on the pump body 4, as Figure 3 shown, the lock assembly 21 corresponds to one pipe groove 43, so at least one pipe pressing block 218 can be used as a component of the lock assembly 21 and arranged on the cover plate 217 of the lock assembly 21; there can be a second pipe groove 43 on the pump body 4, and the second pipe groove 43 can be located at a position on the pump body 4 that does not correspond to the lock assembly 21, so at least one pipe pressing block 218 can be arranged at other parts of the door body 2 except the lock assembly 21. It should be noted that multiple pipe pressing blocks 218 can be correspondingly arranged for each pipe groove 43. According to actual requirements, two, three or more pipe pressing blocks 218 can be arranged for one pipe groove 43.

[0043] In a possible implementation, the top surface of the pipe pressing block 218 can be an arc surface. By using the pipe pressing block 218 with an arc surface as the top surface, when the door body 2 is closed, the most prominent part on the arc surface, that is, the part on the arc surface closest to the nutrient infusion tube, can contact the nutrient infusion tube and press the nutrient infusion tube into the pipe groove 43, avoiding the situation that the pipe pressing block 218 contacts the nutrient infusion tube before reaching the effective action position and pushing the nutrient infusion tube away from the pipe groove 43.

[0044] Combined Figure 1 and Figure 2 shown, in a possible implementation, a magnetic member 25 can be arranged on the surface of the door body 2 facing the pump body 4, and a magnetic field sensor (not shown in the figure) can be arranged in the pump body 4. The magnetic field sensor can be used to detect the magnetic field of the magnetic member 25. When the door body 2 rotates relative to the pump body 4, the distance between the magnetic member 25 and the magnetic field sensor will change. Therefore, the magnetic field intensity measured by the magnetic field sensor will change, and the opening and closing state of the door body 2 can be judged by reading the measured magnetic field intensity.

[0045] Figure 5 is a schematic structural diagram of a pump body of a nutrient infusion device provided by an embodiment of the present application. Refer to Figure 5, in a possible implementation, the pump body 4 may further include an ultrasonic sensor (not shown in the figure). The ultrasonic sensor may include an ultrasonic transmitting end and an ultrasonic receiving end. The ultrasonic transmitting end and the ultrasonic receiving end may be respectively arranged along both sides of the open end for detecting the bubble state in the nutrient infusion tube 5 located in the tube groove 43; and / or the pump body 4 may further include a pressure sensor (not shown in the figure). The detection end of the pressure sensor may be arranged on the side wall of the tube groove 43 for detecting the blockage state of the nutrient infusion tube 5 located in the tube groove 43. Schematically, the pump body 4 may have both the ultrasonic sensor and the pressure sensor at the same time. The ultrasonic sensor and the pressure sensor may be respectively arranged at opposite ends of the tube groove 43 in the length direction. At this time, the length of the tube groove 43 may be adaptively adjusted to accommodate both the ultrasonic sensor and the pressure sensor at the same time; when the number of tube grooves 43 is two, the ultrasonic sensor and the pressure sensor may be respectively arranged in the two tube grooves 43, or the number of both the ultrasonic sensor and the pressure sensor may be greater than or equal to two. According to actual requirements, multiple ultrasonic sensors and pressure sensors may be arranged in each tube groove 43.

[0046] The ultrasonic transmitting end may be an active piezoelectric element for generating high-frequency sound waves. The high-frequency sound waves may first pass through the ultrasonic sensor wall and then propagate into the pipeline of the nutrient infusion tube 5 in contact with the ultrasonic sensor wall. The high-frequency sound waves may then pass through the liquid-filled pipeline, reach the ultrasonic sensor wall on the opposite side of the pipeline, and finally be received by a passive piezoelectric element on the other side, that is, the ultrasonic receiving end. The ultrasonic sensor determines whether there are bubbles by transmitting and receiving ultrasonic waves and then based on the differences in their reflection and propagation. When there are bubbles in the pipeline of the nutrient infusion tube 5, due to the large change in acoustic impedance, the ultrasonic waves will be reflected back and will not reach the ultrasonic receiving end, so that the ultrasonic sensor can detect the presence of bubbles. Once bubbles are detected in the nutrient infusion tube 5, the nutrient infusion device 1 configured with the ultrasonic sensor may issue an alarm or automatically shut down to avoid harm to the user.

[0047] The above is only the specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A nutrition infusion device, used in conjunction with a nutrition infusion tube, characterized in that: It comprises a pump body, a door body and a door shaft, wherein the door body is movably connected to the pump body through the door shaft; The pump body is provided with a lock buckle, a mounting panel and a pipe groove arranged on the mounting panel, wherein the pipe groove is used to install at least a part of the nutrition infusion tube and provide a detection position; The door body is provided with a lock assembly, which includes a first slider and a tube pressing block. The tube pressing block is provided on a surface facing the pump body. The lock assembly is configured such that when in a locked position, the tube pressing block abuts against an open end of the tube groove, and the first slider abuts against the lock buckle.

2. The nutrition infusion device according to claim 1, characterized in that: The lock assembly further comprises a second slider and a first elastic member, the door body comprises a door panel and a first blocking wall, the door panel and the first blocking wall are arranged to intersect, and an opening is arranged on the door panel; The first portion of the first slider is in contact with the first blocking wall via a first elastic member, and the second portion of the first slider is configured to be in contact with the lock catch in a locked position and to be disengaged from the lock catch in an unlocked position; One end of the second slider passes through the opening and movably abuts against the first slider, and the other end of the second slider is a free end. The second slider is configured to squeeze the first slider to move toward the first elastic member when moving toward the first slider, so as to switch the first slider from the locked position to the unlocked position.

3. The nutrition infusion device according to claim 2, characterized in that: The lock assembly further includes a second elastic member, one end of which abuts against the door panel. When the first sliding block switches from the locking position to the unlocking position, the second elastic member pushes the door body to move in a direction away from the pump body.

4. The nutrition infusion device according to claim 2, characterized in that: The contact surface between the first slider and the second slider is a first inclined surface. Along the direction in which the second slider moves toward the first slider, the first inclined surface is gradually inclined toward a direction away from the first elastic member.

5. The nutrition infusion device according to claim 4, characterized in that: The contact surface between the second sliding block and the first sliding block is a second inclined surface, and the second inclined surface is arranged parallel to the first inclined surface.

6. The nutrition infusion device according to claim 4, characterized in that: The contact surface between the second slider and the first slider is an arc surface, and the arc surface is in line contact with the first slider.

7. The nutrition infusion device according to claim 3, characterized in that: The lock assembly or the door body is provided with a second blocking wall, and the second elastic member includes a push pin and a spring; one end of the push pin abuts against a side of the door panel facing the pump body through the spring; the other end of the push pin is a free end; in the locked position, the free end of the push pin abuts against the mounting panel, so that the push pin is separated from the second blocking wall, and the spring is in a compressed state; In the unlocked position, at least part of the ejector pin abuts against the second blocking wall, and the spring is in a pre-tightened state; in the process of switching from the locked position to the unlocked position, the spring switches from the compressed state to the pre-tightened state, thereby applying a rebound force to the door panel.

8. The nutrition infusion device according to claim 1, characterized in that: The lock assembly comprises a cover plate, and the cover plate is provided with the tube pressing block formed in one piece.

9. The nutrition infusion device according to claim 1, characterized in that: The top surface of the tube pressing block is an arc surface.

10. The nutrition infusion device according to claim 1, characterized in that: The pump body also includes an ultrasonic sensor, wherein the ultrasonic sensor includes an ultrasonic transmitting end and an ultrasonic receiving end, and the ultrasonic transmitting end and the ultrasonic receiving end are respectively arranged along both sides of the opening end to detect the bubble state of the nutrient infusion pipe located in the pipe groove; and / or the pump body also includes a pressure sensor, and the detection end of the pressure sensor is arranged on the side wall of the pipe groove, which is used to detect the blockage state of the nutrient infusion pipe located in the pipe groove.

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