An enteral nutrition co-infusion device

Abstract

The application belongs to the technical field of medical devices, and discloses an enteral nutrition combined infusion device, which comprises a pushing mechanism and a gastric tube, and further comprises: a blocking unit connected with the pushing mechanism and used for bending the tail of the port of the gastric tube; a limiting assembly connected with the pushing mechanism and located on the side of the blocking unit away from the pushing mechanism; and a moving assembly installed on the limiting assembly; wherein the pushing mechanism comprises a shell, and the inner cavity of the shell is used for placing an injection tube; through the cooperation of the structures such as the tapered block and the docking unit, in the injection process, it is not necessary to manually replace the injection gap every time, and the end of the gastric tube is separately blocked and the tail is bent, so that when the injection tube A is lowered for infusion, manual repeated operation is not necessary, and in the case of a large number of patients, only the medical staff need to closely monitor the injection state, thereby improving the overall efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of medical devices, and particularly relates to an enteral nutrition combined infusion device. BACKGROUND

[0002] The enteral nutrition refers to a method for providing nutrients to patients who cannot tolerate normal meals through the gastrointestinal tract by using a nutrient solution composed of small and medium molecular nutrients which only needs chemical digestion or does not need digestion, wherein the enteral nutrition infusion mode can be divided into one-time infusion, intermittent gravity drop infusion and continuous drop infusion.

[0003] When the stomach tube is used to supplement the nutrition of the esophageal cancer patient, it is necessary to judge whether the stomach tube is in the stomach by using the injection tube to draw gastric juice, and the process needs to infuse the injection tube for multiple times, and then the liquid food and the nasal feeding liquid need to be respectively infused into the stomach tube, and the process is relatively complex, and the injection tube needs to be infused for more than twice, and in the interval of the infusion alternation, the end part of the stomach tube needs to be blocked by the piston, and the tail part of the pipeline needs to be bent to avoid air entering, and at least two operation processes are needed for a single patient, and when there are many patients, the control of the infusion intensity and the concentration of attention of the manual repeated operation will be greatly discounted, and therefore, the present application needs to be improved. SUMMARY

[0004] To solve the problems in the background art, the present application provides an enteral nutrition combined infusion device.

[0005] To achieve the above object, the present application provides the following technical scheme: an enteral nutrition combined infusion device, comprising a pushing mechanism and a stomach tube, and further comprising:

[0006] a blocking unit connected with the pushing mechanism and used for bending the tail part of the port of the stomach tube;

[0007] a limiting assembly connected with the pushing mechanism and located on the side of the blocking unit away from the pushing mechanism;

[0008] a moving assembly installed on the limiting assembly;

[0009] The pushing mechanism comprises a shell, the inner cavity of the shell is used for placing the injection tube, the shell is provided with a docking unit for limiting the liquid outlet end of the injection tube, the docking unit comprises a positioning plate, the positioning plate is internally and slidably connected with a movable block for supporting the liquid outlet port of the injection tube, and a bellows is installed at the center of the bottom surface of the movable block.

[0010] The barrier unit comprises a rubber shell mounted on a positioning plate, two tapered blocks are movably connected in a staggered manner in the inner cavity of the rubber shell, the outer ends of the two tapered blocks extend to the outer side of the rubber shell and are connected by a hinged rod, a spur gear is mounted at the center of the outer side of the hinged rod, the outer wall of the spur gear is engaged with a driving rod, and the end of the driving rod away from the rubber shell is fixedly connected with a movable block.

[0011] When the driving rod is moved by an external force, it will drive the hinged rod to rotate through the spur gear, so that the two ends of the hinged rod drive the upper and lower tapered blocks to move away from or close to each other.

[0012] The moving assembly comprises a flexible tube in communication with the corrugated pipe, a contact block is movably connected to one end of the flexible tube through a cylinder, the bottom of the contact block is abutted with a splicing frame, and the upper and lower ends of the splicing frame away from the contact block are both sleeved with a limiting rod.

[0013] Preferably, an electric propeller capable of pushing the injection tube to perform injection is mounted inside the shell;

[0014] The top end of the movable block is in a semicircular shape capable of adhering to the outer wall of the liquid outlet end of the injection tube, a circular groove allowing the injection tube to be connected with the gastric tube is formed in the middle of the positioning plate, and the bottom surface of the movable block is elastically connected with the positioning plate through a first spring;

[0015] A rubber ring piece for increasing the adhesion to the gastric tube is mounted on the inner wall of the circular groove of the positioning plate.

[0016] Preferably, the two sets of upper and lower staggered tapered blocks are identical in shape, and the end close to the outer wall of the gastric tube is in a pointed shape.

[0017] The upper tapered block comprises a hollow block body, the outer end of the hollow block body is movably sleeved in the inner part of the hinged rod, a block body is sleeved in the inner part of the hollow block body, and the hollow block body is elastically connected with the block body through a second spring.

[0018] Preferably, the end of the tapered block inside the rubber shell is elastically connected with the rubber shell through a flexible spring, and a spring piece is mounted on the hinged rod to reset the hinged rod and the spur gear.

[0019] Preferably, the contact area between the driving rod and the spur gear is in a "H" shape, and a rack for engaging with the spur gear is mounted on the side wall of the driving rod adhering to the spur gear.

[0020] Preferably, the limiting assembly comprises a magnetic double splicing plate, the magnetic double splicing plate is composed of two pad plates magnetically attracted to each other, and the magnetic double splicing plate is in a hollow state after splicing.

[0021] Preferably, the magnetic double-splicing board is internally provided with two resisting rods, and each of the two resisting rods is composed of two elastically connected limiting arc blocks, and one end of each limiting arc block is in abutment with the outer wall of the gastric tube.

[0022] Preferably, the outer wall of the upper end of the cylinder is provided with a fixing frame, the fixing frame is mounted on the magnetic double-splicing board, the resisting block is elastically connected with the magnetic double-splicing board through the elastic reset assembly, and the top of the resisting block is in the form of a circular tube and is provided on the outer side of the cylinder;

[0023] The elastic reset assembly is composed of a cylinder and a hard spring, the cylinder is movably provided on the resisting block, and the two ends of the hard spring are connected with the resisting block and the magnetic double-splicing board, respectively.

[0024] Preferably, the contact end of the resisting block and the splicing frame is provided with an inclined angle, and the inclined angle end is in abutment with the corner of the splicing frame.

[0025] When the corrugated pipe is compressed by external force to make the internal gas enter the inner cavity of the cylinder through the hose, the gas in the cylinder continuously punches the resisting block downward, so that the inclined angle end at the bottom of the resisting block abuts against the splicing frame and moves.

[0026] Preferably, the two limiting rods are provided with rubber arc blocks located in the interior of the magnetic double-splicing board, and the magnetic double-splicing board is provided with a straight groove for enabling the rubber arc blocks to move linearly.

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

[0028] By cooperating the structures of the tapered blocks and the docking unit, the present application does not need to manually replace the injection gap every time during the multiple injection processes, and the end of the gastric tube is separately blocked and the tail is bent, when the injection pipe A is lowered for infusion, the movable block moves the two staggered tapered blocks in the rubber shell upward and downward through the driving rod, the spur gear and the hinge rod, so that the tips of the two tapered blocks do not press the outer wall of the gastric tube, at this time, the gastric tube is in a connected state, on the contrary, the tips of the two tapered blocks press the gastric tube when the movable block moves upward, so that the inner cavity of the gastric tube in the middle of the rubber shell is in a closed state, at this time, external air cannot enter the interior of the gastric tube through the end part of the docking area of the gastric tube and the injection pipe, and manual repeated work is not needed, in the case of a large number of patients, the medical staff only need to closely observe the injection state, and the overall efficiency is improved.

[0029] The application cooperates the shell and the electric propeller, and does not need manual boosting. When the infusion of the nutrient solution is carried out, the infusion speed needs to be ensured not to be too fast or too slow. Under the premise of multiple operations, the control of the boosting force cannot be ensured by manual operation. At this time, the injection tube is only placed in the shell. The shape of the shell cavity matched with the injection tube ensures the stable placement and positioning of the injection tube. The auxiliary boosting operation is carried out through the electric propeller by pressing the button, which greatly avoids the disadvantages that the boosting force cannot be accurately controlled by personnel in long-term operation.

[0030] The application cooperates the hose and the rubber arc block, prevents the bending and partial pipeline from falling from the side of the bed, and affects the infusion effect due to the too long length of the stomach tube. The gas in the bellows is continuously injected into the inside of the hose, so that the abutting block moves downward and abuts against the splicing frame at the inclined angle end, so that the splicing frame drives the rubber arc block in the rubber shell to move away from each other through the limiting rod. Through the compression of the magnetic attraction double splicing plate and the slight movement of the rubber arc block and the limiting effect of the abutting rod on the stomach tube, it is ensured that the stomach tube can effectively avoid the bending, interlacing and partial falling from the side of the bed even under the premise that the length of the pipeline is relatively long.

[0031] The application is combined and connected in a combined mode of the pushing mechanism, the blocking unit, the limiting assembly and the moving assembly. When the nutrition infusion is needed, it is directly connected. When the infusion is completed, one end of the hose is pulled out from the bottom of the bellows and blocked by the piston. At the same time, the stomach tube device is removed and blocked at the end by the piston itself. The whole does not need to be placed together, which greatly improves the universality of the whole. BRIEF DESCRIPTION OF DRAWINGS

[0032] Figure 1 It is a structural schematic view of the application;

[0033] Figure 2 It is a top view structural schematic view of the application;

[0034] Figure 3 It is a structural cooperation relationship schematic view of the bellows and the first spring of the application;

[0035] Figure 4 It is a subdivided structural schematic view of the abutting unit of the application;

[0036] Figure 5 It is a structural cooperation relationship schematic view of the abutting block and the hose of the application;

[0037] Figure 6 It is a structural cooperation relationship schematic view of the movable block and the bellows of the application;

[0038] Figure 7Schematic diagram of the structural coordination relationship between the rubber shell and the cone-shaped letter block of the present invention;

[0039] Figure 8 A schematic diagram of the structural coordination relationship between the hollow block and the second spring of the present invention;

[0040] Figure 9 for Figure 8 A schematic diagram of the partially enlarged structure at center A;

[0041] Figure 10 Schematic diagram of the structural coordination relationship between the movable block and the driving rod of the present invention;

[0042] Figure 11 This is a schematic diagram of the structural coordination relationship between the cylinder and the abutment block of the present invention;

[0043] Figure 12 Schematic diagram of the structural coordination relationship between the magnetic double panels and the interference rods of the present invention;

[0044] Figure 13 It is a schematic diagram of the structural coordination relationship between the interference rod and the rubber arc block of the present invention.

[0045] In the figure: 1. Pushing mechanism; 11. Shell; 12. Electric propeller; 13. Docking unit; 131. Positioning plate; 132. Movable block; 133. Bellows; 134. First spring; 2. Barrier unit; 21. Rubber shell; 22. Cone block; 221. Hollow block; 222. Block; 223. Second spring; 23. Drive rod; 24. Spur gear; 25. Articulated rod; 3. Limiting assembly; 31. Magnetic double panel; 32. Interference rod; 4. Moving assembly; 41. Fixed frame; 42. Cylinder; 43. Interference block; 44. Elastic reset assembly; 45. Splicing frame; 46. Limiting rod; 47. Rubber arc block; 48. Hose; 5. Gastric tube. DETAILED DESCRIPTION

[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] like Figures 1 to 13 As shown, the present invention provides an enteral nutrition combination infusion device, comprising a pushing mechanism 1 and a stomach tube 5, and further comprising:

[0048] The barrier unit 2 is connected to the pushing mechanism 1 and is used to bend the end of the port of the gastric tube 5;

[0049] A limiting assembly 3 is connected with the pushing mechanism 1 and located at the side of the blocking unit 2 away from the pushing mechanism 1.

[0050] A moving assembly 4 is installed on the limiting assembly 3.

[0051] The pushing mechanism 1 comprises a shell 11, an inner cavity of the shell 11 is used for placing a syringe, the shell 11 is installed with a docking unit 13 for limiting the liquid outlet end of the syringe, the docking unit 13 comprises a positioning plate 131, an activity block 132 for supporting the liquid outlet port of the syringe is slidably connected inside the positioning plate 131, a corrugated pipe 133 is installed at the center of the bottom surface of the activity block 132.

[0052] The blocking unit 2 comprises a rubber shell 21 installed on the positioning plate 131, two tapered blocks 22 are obliquely and staggeringly movably connected in the inner cavity of the rubber shell 21, the outer ends of the two tapered blocks 22 are extended to the outer side of the rubber shell 21 and connected through a hinged rod 25, a spur gear 24 is installed at the center of the outer side of the hinged rod 25, a driving rod 23 is engaged with the outer wall of the spur gear 24, one end of the driving rod 23 away from the rubber shell 21 is fixedly connected with the activity block 132.

[0053] When the driving rod 23 is moved by external force, it will drive the hinged rod 25 to rotate through the spur gear 24, so that the two ends of the hinged rod 25 drive the upper and lower tapered blocks 22 to move away from or close to each other.

[0054] The moving assembly 4 comprises a hose 48 in communication with the corrugated pipe 133, one end of the hose 48 is movably clamped with an abutting block 43 through a cylinder 42, the bottom of the abutting block 43 is abutted with a splicing frame 45, the upper and lower ends of the splicing frame 45 away from the abutting block 43 are both sleeved with a limiting rod 46.

[0055] As shown in Figure 4 and Figure 5 , the inner part of the shell 11 is installed with an electric propeller 12 capable of pushing the syringe to perform injection operation;

[0056] The top end of the activity block 132 is in a semicircular shape capable of adhering to the outer wall of the liquid outlet end of the syringe, the middle part of the positioning plate 131 is provided with a circular groove for the syringe to dock with the gastric tube 5, the two sides of the bottom surface of the activity block 132 are elastically connected with the positioning plate 131 through first springs 134.

[0057] A rubber ring piece for increasing the adhesion to the gastric tube 5 is installed on the inner wall of the circular groove of the positioning plate 131.

[0058] The above scheme is adopted: a start-stop button for controlling the electric propeller 12 is installed on the shell 11. The button adopts a push-type design, that is, it starts after pressing, stops after pressing again, and resets after long pressing. This is the existing technology and will not be described in detail in this article; a smooth arc-shaped grid plate is provided in the inner cavity of the shell 11 for limiting the outer wall of the injection tube; a vertical groove is provided on the side of the inner cavity of the positioning plate 131 close to the shell 11 to allow the injection tube to slide down smoothly, and the bottom surface of the vertical groove is semi-arc-shaped.

[0059] like Figures 6 to 8 and Figure 10 As shown, the two groups of cone-shaped blocks 22 staggered up and down have the same shape, and the ends close to the outer wall of the gastric tube 5 are pointed;

[0060] The cone block 22 located above includes a hollow block 221 , the outer end of the hollow block 221 is movably sleeved inside the hinge rod 25 , a block 222 is sleeved inside the hollow block 221 , and the hollow block 221 is elastically connected to the block 222 via a second spring 223 .

[0061] Adopting the above solution: when the gastric tube 5 needs to be taken out from the inside of the rubber shell 21, the two blocks 222 are pulled away from each other so that one end located in the hollow block 221 gradually moves toward the deep part of the hollow block 221. At this time, the gap between the middle areas of the two blocks 222 will gradually widen, and the gastric tube 5 can be taken out upward.

[0062] like Figure 8 and Figure 9 As shown, one end of the cone block 22 located inside the rubber shell 21 is elastically connected to the rubber shell 21 through a flexible spring, and a spring sheet is installed on the hinge rod 25 to reset the hinge rod 25 and the spur gear 24.

[0063] like Figure 10 As shown, the contact area between the driving rod 23 and the spur gear 24 is in a "冂" shape, and a rack for meshing with the spur gear 24 is installed on one side wall where the driving rod 23 and the spur gear 24 are in contact.

[0064] The above solution is adopted: the "冂"-shaped design of one end of the driving rod 23 allows the driving rod 23 to have sufficient interval time to allow the rack to engage with the spur gear 24, and drive the hinge rod 25 to rotate through the spur gear 24.

[0065] like Figure 5 、 Figure 12 and Figure 13 As shown, the limiting component 3 includes a magnetic double panel 31, which is composed of two mutually spliced ​​pads. After the magnetic double panel 31 is spliced ​​and formed, it is hollow in the middle.

[0066] like Figure 13As shown, the interior of the magnetic double-puzzle board 31 is provided with two abutting rod members 32, each of which is composed of two elastically connected limiting arc blocks, one end of each limiting arc block abutting against the outer wall of the gastric tube 5.

[0067] With the above scheme, the magnetic double-puzzle board 31 is split, the gastric tube 5 is placed in the S-shaped region according to Figure 13 the above scheme, and then the magnetic double-puzzle board 31 is spliced, the inner wall of the inner cavity of the magnetic double-puzzle board 31 slightly presses the outer wall of the gastric tube 5, so as to avoid the phenomenon that the bending part of the gastric tube 5 is blocked after the gastric tube 5 is placed, and when the two ends of the gastric tube 5 inside the magnetic double-puzzle board 31 are pulled outward, one end of the gastric tube 5 gradually abuts against the limiting arc block of the abutting rod member 32.

[0068] As shown in Figure 5 and Figure 12 , the outer wall of the upper end of the cylinder 42 is provided with a fixing frame 41, the fixing frame 41 is installed on the magnetic double-puzzle board 31, the abutting block 43 is elastically connected with the magnetic double-puzzle board 31 through the elastic reset assembly 44, and the top of the abutting block 43 is in the form of a circular tube and is provided on the outer side of the cylinder 42.

[0069] The elastic reset assembly 44 is composed of a cylinder and a hard spring, the cylinder is movably sleeved on the abutting block 43, and the two ends of the hard spring are connected with the abutting block 43 and the magnetic double-puzzle board 31 respectively.

[0070] As shown in Figure 11 , the contact end of the abutting block 43 and the splicing frame 45 is provided with an inclined angle, and the inclined angle end abuts against the corner of the splicing frame 45.

[0071] When the bellows 133 is compressed by external force to make the gas inside the bellows 133 enter the inner cavity of the cylinder 42 through the hose 48, the gas in the inner cavity of the cylinder 42 continuously punches and moves downward the abutting block 43, so that the inclined angle end at the bottom of the abutting block 43 abuts against the splicing frame 45.

[0072] With the above scheme, the two splicing frames 45 are also connected in the concave-convex butt joint mode, so as to improve the clamping force.

[0073] As shown in Figure 5 and Figures 11 to 13 , the two limiting rods 46 are each provided with a rubber arc block 47 inside the magnetic double-puzzle board 31, and the magnetic double-puzzle board 31 is provided with a straight slot allowing the straight movement of the rubber arc block 47.

[0074] With the above scheme, when the rubber arc block 47 is placed inside the magnetic double-puzzle board 31, the fixed shaft extending outward on the rubber arc block 47 will extend outward from the straight slot of the magnetic double-puzzle board 31, at this time, the hole corresponding to the fixed shaft of the rubber arc block 47 on the limiting rod 46 can be directly sleeved, and the inner wall of the hole on the limiting rod 46 is provided with a rubber ring, so as to improve the fastening effect of the two.

[0075] The working principle and use process of the present application:

[0076] First, the injection tube is slid down along the vertical slot on the positioning plate 131, and gradually drives the movable block 132 to move down synchronously, until it corresponds to the port part of the gastric tube 5 clamped on the positioning plate 131, and the tube orifice of the injection tube is inserted into the inside of the gastric tube 5 by slightly pushing the injection tube, realizing the butt joint of the two, and placing one end of the gastric tube 5 on the stomach of the patient, pressing the switch on the shell 11, so that the electric pusher 12 slowly pushes and makes the material in the injection tube enter into the gastric tube 5, after detecting whether the gastric tube 5 exists, the injection tube used for detection is taken out and replaced by injection tube A, and the injection tube B equipped with liquid diet and nasogastric feeding liquid is used for infusion work;

[0077] When the injection tube A is taken out, the electric pusher 12 has completed the reset, and the injection tube A is slightly pulled out and the fit effect with the movable block 132 is released, when the injection tube A is moved down for the first time for infusion, the downward movement of the movable block 132 will drive the two staggered tapered blocks 22 inside the rubber shell 21 to move away from each other through the driving rod 23, the spur gear 24 and the articulated rod 25, so that the sharp ends of the two do not resist the outer wall of the gastric tube 5, and the inside of the gastric tube 5 is in a connected state, on the contrary, when the movable block 132 moves up, the two tapered blocks 22 will move towards each other through the driving rod 23, the spur gear 24 and the articulated rod 25, and the sharp ends will press the gastric tube 5, so that the inside of the gastric tube 5 in the middle of the rubber shell 21 is in a closed state, at this time, the outside air will not enter into the inside of the gastric tube 5 through the end part of the gastric tube 5 and the injection tube butt joint area;

[0078] It should be noted that in actual use, the middle length distance of the gastric tube 5 between the blocking unit 2 and the limiting assembly 3 can be adjusted by itself, so as to ensure that the gastric tube 5 inside the rubber shell 21 can be smoothly pressed by the tapered blocks 22;

[0079] Subsequently, the bellows 133 at the bottom of the movable block 132 will be compressed when the movable block 132 moves down, and the gas inside the bellows 133 will be continuously injected into the inside of the hose 48, when the air pressure inside the hose 48 gradually increases, the abutting block 43 will move down and the inclined angle end will abut the splicing frame 45, so that the splicing frame 45 drives the rubber arc block 47 inside the rubber shell 21 to move away from each other through the limiting rod 46, since the overall gas content of the bellows 133 is limited, the moving distance of the rubber arc block 47 will not be too large, through the compression of the magnetic attraction double splicing plate 31 and the slight movement of the rubber arc block 47, and the limiting effect of the abutting rod 32 on the gastric tube 5, it is ensured that even if the pipeline length is relatively long, the gastric tube 5 can effectively avoid the phenomenon of being bent and staggered due to the complexity of the actual environment;

[0080] After the infusion operation is completed, one end of the hose 48 can be pulled out of the bottom of the bellows 133 and plugged with the piston, while the gastric tube 5 can be removed from the device and plugged at the end with its own piston.

[0081] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting; it is not intended to exclude myriad other embodiments of the present application that other inventors can develop based on the same general inventive concepts embodied by the described embodiments. That is, although the present application is described in terms of particular embodiments and implementations, it is to be understood that the terminology used is for the purpose of descriptive clarity and that it is intended to be limited only by the claims.

[0082] While the embodiments of the application have been illustrated and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made therein without departing from the spirit and scope of the application, which is defined by the following claims and their equivalents.

Claims

1. An enteral nutrition combination infusion device, comprising a propulsion mechanism (1) and a gastric tube (5), characterized in that: Also includes: a barrier unit (2) connected to the pushing mechanism (1) and used to bend the end of the port of the gastric tube (5); a limiting assembly (3), which is connected to the pushing mechanism (1) and is located on a side of the blocking unit (2) away from the pushing mechanism (1); A moving assembly (4) mounted on the limiting assembly (3); The pushing mechanism (1) comprises a housing (11), an inner cavity of the housing (11) is used to place a syringe, the housing (11) is equipped with a docking unit (13) for limiting the liquid outlet end of the syringe, the docking unit (13) comprises a positioning plate (131), a movable block (132) for supporting the liquid outlet port of the syringe is slidably connected to the interior of the positioning plate (131), and a bellows (133) is installed at the center of the bottom surface of the movable block (132); The barrier unit (2) comprises a rubber shell (21) mounted on a positioning plate (131), the inner cavity of the rubber shell (21) being movably connected to two cone blocks (22) in an obliquely staggered manner, the outer ends of the two cone blocks (22) both extending to the outside of the rubber shell (21) and connected via a hinge rod (25), a spur gear (24) being mounted at the center of the outer side of the hinge rod (25), a driving rod (23) being engaged with the outer wall of the spur gear (24), and the end of the driving rod (23) away from the rubber shell (21) being fixedly connected to the movable block (132); When the driving rod (23) is moved by an external force, it drives the hinge rod (25) to rotate through the spur gear (24), so that the two ends of the hinge rod (25) drive the upper and lower cone blocks (22) to move away from or closer to each other; The moving assembly (4) comprises a hose (48) in communication with the bellows (133); one end of the hose (48) is movably connected to a resistance block (43) via a cylinder (42); the bottom of the resistance block (43) is in contact with a splicing frame (45); and the upper and lower ends of the splicing frame (45) away from the resistance block (43) are sleeved with limit rods (46).

2. The enteral nutrition combination infusion device according to claim 1, characterized in that: An electric propeller (12) capable of pushing the injection tube to perform injection operation is installed inside the housing (11); The top of the movable block (132) is in a semi-arc shape that can fit with the outer wall of the liquid outlet end of the injection tube. A circular groove is provided in the middle of the positioning plate (131) for docking the injection tube with the gastric tube (5). Both sides of the bottom surface of the movable block (132) are elastically connected to the positioning plate (131) via a first spring (134). A rubber ring piece is installed on the inner wall of the circular groove of the positioning plate (131) to increase the fit to the gastric tube (5).

3. The enteral nutrition combination infusion device according to claim 1, characterized in that: The two groups of cone-shaped blocks (22) staggered up and down have the same shape, and the ends close to the outer wall of the gastric tube (5) are both pointed; The cone block (22) located above includes a hollow block (221), the outer end of the hollow block (221) is movably sleeved inside the hinge rod (25), a block (222) is sleeved inside the hollow block (221), and the hollow block (221) is elastically connected to the block (222) via a second spring (223).

4. The enteral nutrition combination infusion device according to claim 3, characterized in that: One end of the conical character block (22) located inside the rubber shell (21) is elastically connected to the rubber shell (21) through a flexible spring, and a spring piece for resetting the articulated rod (25) and the spur gear (24) is installed on the articulated rod (25).

5. The enteral nutrition combination infusion device according to claim 1, characterized in that: The contact area between the driving rod (23) and the spur gear (24) is in an inverted "冂" shape, and a rack for meshing with the spur gear (24) is installed on one side wall of the driving rod (23) that fits with the spur gear (24).

6. The enteral nutrition combination infusion device according to claim 1, characterized in that: The limiting component (3) includes a magnetic double-spliced plate ( 7. The enteral nutrition combination infusion device according to claim 6, characterized in that: ​ 8. The enteral nutrition combination infusion device according to claim 1, characterized in that: ​ ​ 9. The enteral nutrition combination infusion device according to claim 8, characterized in that: ​ ​ 10. The enteral nutrition combination infusion device according to claim 9, characterized in that: ​

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