Enteral nutrition combination infusion device

Abstract

The invention belongs to the technical field of medical instruments, and discloses an enteral nutrition combination infusion device which comprises a pushing mechanism and a stomach tube and further comprises a blocking unit connected with the pushing mechanism and used for bending the tail of a port of the stomach tube; the limiting assembly is connected with the pushing mechanism and located on the side, away from the pushing mechanism, of the blocking unit; the moving assembly is mounted on the limiting assembly; wherein the pushing mechanism comprises a shell, and an inner cavity of the shell is used for placing an injection tube; through cooperation of the conical block, the butt joint unit and other structures, in the multiple injection processes, manual injection gap replacement, independent blocking of the end of the stomach tube and tail bending are not needed every time, manual repeated operation is not needed when the injection tube A is moved downwards for infusion, and under the condition that the number of patients is large, the operation efficiency is greatly improved. Medical staff only need to stare at the injection state, and the overall efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of medical devices, and in particular is an enteral nutrition combination infusion device. Background Art

[0002] Enteral nutrition refers to a method of providing nutrients to patients who cannot tolerate normal meals by supplying nutrient solutions composed of small and medium-molecule nutrients that only require chemical digestion or no digestion through the gastrointestinal tract. Enteral nutrition infusion methods can be divided into one-time infusion, intermittent gravity infusion and continuous infusion.

[0003] When using a gastric tube to supplement nutrition for patients with esophageal cancer, it is necessary to first use the injection tube to draw back gastric juice to determine whether the gastric tube is in the stomach. This process requires multiple injections of the injection tube, and then liquid food and nasogastric feeding fluid need to be infused into the gastric tube separately. The process is relatively complicated and requires more than two injections of the injection tube. In addition, in the intervals between alternating infusions, the end of the gastric tube needs to be sealed with a piston, and the tail of the tube needs to be bent to prevent air from entering. When facing a single patient, at least two or more operations are required. When there are many patients, repeated manual operations will greatly reduce the control of infusion intensity and concentration, so it needs to be improved. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides an enteral nutrition combination infusion device.

[0005] To achieve the above object, the present invention provides the following technical solution: an enteral nutrition combination infusion device, comprising a propulsion mechanism and a stomach tube, and further comprising:

[0006] A blocking unit connected to the pushing mechanism and used to bend the tail of the port of the gastric tube;

[0007] A limiting assembly, which is connected to the pushing mechanism and is located on a side of the blocking unit away from the pushing mechanism;

[0008] A moving assembly mounted on the limiting assembly;

[0009] Wherein, the pushing mechanism comprises a shell, the inner cavity of the shell is used to place the injection tube, the shell is equipped 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 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 includes a rubber shell installed on the positioning plate. Inside the rubber shell, two conical blocks are movably connected in an oblique and staggered manner. The outer ends of the two conical blocks both extend to the outside of the rubber shell and are connected by a hinge rod. At the center of the outside of the hinge rod, a spur gear is installed. The outer wall of the spur gear meshes with a driving rod, and the end of the driving rod away from the rubber shell is fixedly connected to a movable block;

[0011] When the driving rod moves under an external force, it will drive the hinge rod to rotate through the spur gear, causing the two conical blocks at both ends of the hinge rod to move away from or close to each other;

[0012] The moving component includes a hose communicated with the corrugated pipe. One end of the hose is movably clamped with a contact block through a cylinder. The bottom of the contact block abuts against a splicing frame, and limiting rods are sleeved on both the upper and lower ends of the side of the splicing frame away from the contact block.

[0013] Preferably, an electric pusher capable of pushing the injection tube for injection operation is installed inside the shell;

[0014] The top end of the movable block is in a semi-circular arc shape that can fit the outer wall of the liquid outlet end of the injection tube. A circular groove for docking the injection tube with the gastric tube is opened in the middle of the positioning plate. Both sides of the bottom surface of the movable block are elastically connected to the positioning plate through first springs;

[0015] A rubber ring piece for increasing the fitting degree with the gastric tube is installed on the inner wall of the circular groove of the positioning plate.

[0016] Preferably, the two groups of upper and lower staggered conical blocks have the same shape, and the ends close to the outer wall of the gastric tube are both pointed;

[0017] The upper conical block includes a hollow block body. The outer end of the hollow block body is movably sleeved inside the hinge rod. A block body is sleeved inside the hollow block body, and the hollow block body is elastically connected to the block body through a second spring.

[0018] Preferably, one end of the conical block inside the rubber shell is elastically connected to the rubber shell through a flexible spring, and a spring piece for resetting the hinge rod and the spur gear is installed on the hinge rod.

[0019] Preferably, the contact area between the driving rod and the spur gear is in a "冂" shape, and a rack for meshing with the spur gear is installed on the side wall of the driving rod in contact with the spur gear.

[0020] Preferably, the limiting component includes a magnetic double-spliced plate, which is composed of two mutually spliced backing plates magnetically attracted. After the magnetic double-spliced plate is spliced into shape, the middle is in a hollow state.

[0021] Preferably, two abutment rods are installed inside the magnetic double panel, and the two abutment rods are composed of two elastically connected limiting arc blocks, and one end of a single limiting arc block abuts against 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 installed on the magnetic double-jointed plate, the resistance block is elastically connected to the magnetic double-jointed plate through an elastic reset component, and the top of the resistance block is a round tube sleeve arranged on the outside of the cylinder;

[0023] The elastic force reset component is composed of a cylinder and a hard spring. The cylinder is movably sleeved on the resistance block. The two ends of the hard spring are respectively connected to the resistance block and the magnetic double-piece plate.

[0024] Preferably, the contact end of the abutment block and the splicing frame is provided with an oblique angle, and the oblique angle end abuts against the corner of the splicing frame;

[0025] When the bellows is compressed by external force and the gas inside it enters the inner cavity of the cylinder through the hose, the gas inside the cylinder continuously presses the resistance block downward, so that the bevel end at the bottom of the resistance block resists the movement of the splicing frame.

[0026] Preferably, the two limit rods are sleeved with a rubber arc block located inside the magnetic double-jointed plate, and the magnetic double-jointed plate is provided with a straight groove for allowing the rubber arc block to move linearly.

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

[0028] The present invention cooperates with structures such as cone blocks and docking units, so that during multiple injections, there is no need to manually change the injection interval each time, and the end of the gastric tube is blocked and the tail is bent separately. When the injection tube A is moved downward for infusion, the movable block can move the upper and lower staggered cone blocks located inside the rubber shell away from each other through the driving rod, the spur gear and the hinge rod, so that the tips of the two do not press on the outer wall of the gastric tube. At this time, the inside of the gastric tube is connected. On the contrary, the upper two cone blocks of the movable block move toward each other, and their tips press on the gastric tube, so that the inner cavity of one end of the gastric tube located in the middle of the rubber shell is in an occluded state. At this time, outside air will not enter the inside of the gastric tube through the end of the gastric tube and the injection tube docking area, and there is no need for manual repeated operations. In the case of a large number of patients, medical staff only need to keep a close eye on the injection status, thereby improving the overall efficiency.

[0029] The present invention eliminates the need for manual boosting by setting up the coordination of structures such as the shell and the electric propeller. When infusing the nutrient solution, it is necessary to ensure that the infusion speed is not too fast or too slow. However, it is impossible to ensure the control of the boosting force under the premise of multiple manual operations. At this time, it is only necessary to place the syringe into the shell. The shape of the inner cavity of the shell and the syringe are adapted to the shape of the syringe, which ensures the stable placement and positioning of the syringe. The electric propeller can be used to assist the boosting operation by pressing a button, which greatly avoids the disadvantage that personnel cannot accurately control the boosting force during long-term operations.

[0030] The present invention prevents the stomach tube from being bent and partially falling from the side of the bed during actual use due to its excessive length by arranging the cooperation of structures such as the hose and the rubber arc block, thereby preventing the infusion effect from being affected. The gas inside the bellows is continuously injected into the inside of the hose, so that the resistance block moves downward and its beveled end resists the splicing frame, so that the splicing frame drives the rubber arc blocks located inside the rubber shell to move in opposite directions through the limiting rod. The pressing of the magnetic double splicing plates, the slight movement of the rubber arc block and the limiting effect of the resistance rod on the stomach tube ensure that the stomach tube can effectively avoid bending, interlacing and partially falling from the side of the bed due to the long length of the pipe even if the pipe is long.

[0031] The present invention adopts a combined connection mode of the pushing mechanism, the blocking unit, the limiting component and the moving component. When nutrition infusion is needed, they can be connected one by one. When the infusion is completed, one end of the hose can be pulled out from the bottom of the corrugated tube and blocked with a piston. At the same time, the gastric tube device can be taken out and the end can be blocked with its own piston. There is no need to place the whole together, which greatly improves the overall universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the structure of the present invention;

[0033] Figure 2 It is a schematic diagram of the top view structure of the present invention;

[0034] Figure 3 It is a schematic diagram of the structural matching relationship between the bellows and the first spring of the present invention;

[0035] Figure 4 It is a schematic diagram of the subdivided structure of the docking unit of the present invention;

[0036] Figure 5 It is a schematic diagram of the structural matching relationship between the friction block and the hose of the present invention;

[0037] Figure 6 It is a schematic diagram of the structural matching relationship between the movable block and the bellows of the present invention;

[0038] Figure 7It is a schematic diagram of the structural matching relationship between the rubber shell and the cone block of the present invention;

[0039] Figure 8 It is a schematic diagram of the structural matching relationship between the hollow block and the second spring of the present invention;

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

[0041] Fig.10 It is a schematic diagram of the structural matching relationship between the movable block and the driving rod of the present invention;

[0042] Fig.11 It is a schematic diagram of the structural matching relationship between the cylinder and the abutment block of the present invention;

[0043] Fig.12 It is a schematic diagram of the structural matching relationship between the magnetic double-jointed panels and the abutting rods of the present invention;

[0044] Fig.13 It is a schematic diagram of the structural matching 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. driving rod; 24. spur gear; 25. hinged rod; 3. limiting assembly; 31. magnetic double splicing board; 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 be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work 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] A blocking unit 2 connected to the pushing mechanism 1 and used for bending the tail of the port of the gastric tube 5;

[0049] 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;

[0050] A moving component 4, which is installed on the limiting component 3;

[0051] The pushing mechanism 1 includes a housing 11, the inner cavity of the housing 11 is used to place the injection tube, the housing 11 is equipped with a docking unit 13 for limiting the liquid outlet end of the injection tube, the docking unit 13 includes a positioning plate 131, the positioning plate 131 is internally slidably connected with a movable block 132 for supporting the liquid outlet port of the injection tube, and a bellows 133 is installed at the center of the bottom surface of the movable block 132;

[0052] The barrier unit 2 includes a rubber shell 21 mounted on the positioning plate 131. The inner cavity of the rubber shell 21 is movably connected to two cone blocks 22 in an obliquely staggered manner. The outer ends of the two cone blocks 22 extend to the outside of the rubber shell 21 and are connected through a hinge rod 25. A spur gear 24 is installed at the center of the outer side of the hinge rod 25. The outer wall of the spur gear 24 is meshed with a driving rod 23. The end of the driving rod 23 away from the rubber shell 21 is fixedly connected to the movable block 132.

[0053] 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;

[0054] The moving assembly 4 includes a hose 48 connected to the bellows 133. One end of the hose 48 is movably connected to a resistance block 43 through a cylinder 42. The bottom of the resistance block 43 is abutted against a splicing frame 45. The upper and lower ends of the splicing frame 45 away from the resistance block 43 are both provided with limit rods 46.

[0055] like Figure 4 and Figure 5 As shown, an electric propeller 12 capable of pushing the injection tube to perform injection operation is installed inside the housing 11;

[0056] 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 stomach tube 5. Both sides of the bottom surface of the movable block 132 are elastically connected to the positioning plate 131 through the first spring 134.

[0057] 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 .

[0058] Adopting the above scheme: A control button for starting and stopping the electric thruster 12 is installed on the housing 11. The button adopts a pressing design, that is, it starts after being pressed, stops starting after being pressed again, and resets after being long-pressed. This is the prior art and will not be elaborated in this text; a smooth arc-shaped grid plate for limiting the outer wall of the injection tube is arranged in the inner cavity of the housing 11; a vertical groove for the smooth sliding of the injection tube is opened on one side of the inner cavity of the positioning plate 131 close to the housing 11, and the bottom surface of the vertical groove is in a semi-circular arc shape.

[0059] As Figures 6 to 8 and Fig.10 shown, the two groups of tapered letter blocks 22 staggered up and down have the same shape, and one end close to the outer wall of the gastric tube 5 is pointed;

[0060] The upper tapered letter block 22 includes a hollow block body 221. The outer end of the hollow block body 221 is movably sleeved inside the hinge rod 25. A block body 222 is sleeved inside the hollow block body 221, and the hollow block body 221 is elastically connected to the block body 222 through a second spring 223.

[0061] Adopting the above scheme: When it is necessary to take out the gastric tube 5 from the inside of the rubber shell 21, pull the two block bodies 222 away from each other, so that the end of the two block bodies 222 located in the hollow block body 221 gradually moves deeper into the hollow block body 221. At this time, the interval in the middle area of the two block bodies 222 will gradually increase, and the gastric tube 5 can be taken out upward.

[0062] As Figure 8 and Fig. 9 shown, one end of the tapered letter 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 hinge rod 25 and the spur gear 24 is installed on the hinge rod 25.

[0063] As Fig.10 shown, the contact area between the drive 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 of the drive rod 23 that fits with the spur gear 24.

[0064] Adopting the above scheme: The "冂" shape design at one end of the drive rod 23 enables the drive rod 23 to have sufficient interval time for the rack to mesh with the spur gear 24, and drives the hinge rod 25 to rotate through the spur gear 24.

[0065] As Figure 5 、 Fig.12 and Fig.13 shown, the limiting component 3 includes a magnetic double-spliced plate 31. The magnetic double-spliced plate 31 is composed of two spliced backing plates magnetically attracted to each other. After the magnetic double-spliced plate 31 is spliced and formed, the middle is in a hollow state.

[0066] As Fig.13As shown, two abutment rods 32 are installed inside the magnetic double panel 31 , and the two abutment rods 32 are composed of two elastically connected limiting arc blocks, and one end of a single limiting arc block abuts against the outer wall of the gastric tube 5 .

[0067] Adopt the above scheme: after the magnetic double splicing board 31 is disassembled, the stomach tube 5 is Fig.13 The middle area is placed in an S shape, and then the magnetic double-piece board 31 is spliced. The inner wall of the inner cavity of the magnetic double-piece board 31 will slightly press the outer wall of the gastric tube 5, so as to avoid occlusion at the bend of the gastric tube 5 after the gastric tube 5 is placed. When the two ends of the gastric tube 5 located inside the magnetic double-piece board 31 are pulled outward, one end of the gastric tube 5 will gradually resist the upper limit arc block of the resistance rod 32.

[0068] like Figure 5 and Fig.12 As shown, 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-piece board 31, the resistance block 43 is elastically connected to the magnetic double-piece board 31 through an elastic reset component 44, and the top of the resistance block 43 is a round tube sleeve arranged on the outside 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 resistance block 43. The two ends of the hard spring are respectively connected to the resistance block 43 and the magnetic double-jointed plate 31.

[0070] like Fig.11 As shown, the contact end of the abutment block 43 and the splicing frame 45 is provided with an oblique angle, and the oblique angle end abuts against the corner of the splicing frame 45;

[0071] When the bellows 133 is compressed by external force and the gas inside it enters the inner cavity of the cylinder 42 through the hose 48, the gas inside the cylinder 42 continuously presses the abutment block 43 downward, causing the beveled end at the bottom of the abutment block 43 to abut against the movement of the splicing frame 45.

[0072] With the above solution, the two splicing frames 45 are also connected by a concave-convex joint, thereby improving the clamping force.

[0073] like Figure 5 and Figures 11 to 13 As shown, the two limit rods 46 are sleeved with a rubber arc block 47 located inside the magnetic double-jointed board 31, and the magnetic double-jointed board 31 is provided with a straight groove for allowing the rubber arc block 47 to move linearly.

[0074] Adopt the above scheme: when the rubber arc block 47 is placed in the magnetic double-piece panel 31, the fixed axis extending outward on the rubber arc block 47 will extend outward from the straight groove of the magnetic double-piece panel 31. At this time, the hole on the limit rod 46 corresponding to the fixed axis of the rubber arc block 47 can be directly put on. A rubber ring is installed on the inner wall of the hole on the limit rod 46 to enhance the fastening effect of the two.

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

[0076] First, slide the syringe downward along the vertical groove on the positioning plate 131, and gradually drive the movable block 132 to move downward synchronously until it corresponds to the port part of the gastric tube 5 stuck on the positioning plate 131, and gently push the syringe to insert its tube mouth into the inside of the gastric tube 5 to achieve the docking of the two, put one end of the gastric tube 5 on the patient's stomach, press the switch on the shell 11, so that the electric propeller 12 slowly pushes and allows the material inside the syringe to enter the gastric tube 5. After detecting whether the gastric tube 5 exists, it is necessary to take out the syringe used for detection instead of the syringe A in the text, and use the syringe equipped with liquid food and nasogastric liquid instead of the syringe B for infusion operation;

[0077] When the syringe A is taken out again, the electric propeller 12 has been reset, and is slightly pulled out to release the fitting effect with the movable block 132. When the syringe A is first moved down for infusion, the downward movement of the movable block 132 will cause the upper and lower staggered cone blocks 22 located inside the rubber shell 21 to move in opposite directions through the driving rod 23, the spur gear 24 and the hinge rod 25, so that the tips of the two cone blocks 22 do not conflict with the outer wall of the gastric tube 5, so that the inside of the gastric tube 5 is in a connected state. On the contrary, when the movable block 132 moves upward, the driving rod 23, the spur gear 24 and the hinge rod 25 will cause the two cone blocks 22 to move in opposite directions, and cause their tips to press the gastric tube 5, so that the inner cavity of the end of the gastric tube 5 located in the middle of the rubber shell 21 is in a blocked state. At this time, the outside air will not enter the gastric tube 5 through the end of the gastric tube 5 at the docking area with the syringe.

[0078] It should be noted that in actual use, the distance between the gastric tube 5 and the barrier unit 2 and the stopper assembly 3 can be adjusted automatically, so as to ensure that the gastric tube 5 inside the rubber shell 21 can be smoothly compressed by the cone block 22;

[0079] Subsequently, when the movable block 132 moves downward, it compresses the bellows 133 at the bottom thereof, so that the gas inside the bellows 133 is continuously injected into the inside of the hose 48. When the air pressure inside the hose 48 gradually increases, the abutment block 43 moves downward and its beveled end abuts against the splicing frame 45, so that the splicing frame 45 drives the rubber arc block 47 located inside the rubber shell 21 to move in opposite directions 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 pressing of the magnetic double splicing board 31, the slight movement of the rubber arc block 47 and the limiting effect of the abutment rod 32 on the gastric tube 5, it is ensured that the gastric tube 5 is effectively prevented from being bent and interlaced due to the long length of the pipeline and the complexity of the actual environment even if the pipeline is long.

[0080] After the infusion operation is completed, one end of the hose 48 can be pulled out from the bottom of the bellows 133 and blocked with a piston. At the same time, the gastric tube 5 can be taken out of the device and the end can be blocked with its own piston.

[0081] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0082] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An enteral nutrition combination infusion device, comprising a propulsion mechanism (1) and a stomach tube (5), characterized in that: Also includes: A blocking unit (2) connected to the pushing mechanism (1) and used to bend the end of the port of the gastric tube (5); A limiting component (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 shell (11), the inner cavity of the shell (11) is used to place the injection tube, the shell (11) is equipped with a docking unit (13) for limiting the liquid outlet end of the injection tube, the docking unit (13) comprises a positioning plate (131), a movable block (132) for supporting the liquid outlet port of the injection tube is slidably connected inside 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 obliquely staggered and movably connected to two cone blocks (22), 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 meshed 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 external force, it will drive 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) connected to 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 resistance to a splicing frame (45); and 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, and a circular groove is provided in the middle of the positioning plate (131) for docking the injection tube with the stomach 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 appearance, and the ends close to the outer wall of the stomach tube (5) are both pointed; The cone block (22) located at the top comprises 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 "n"-shaped form, 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-piece plate (31), which is composed of two mutually spliced backing plates magnetically attracted to each other. After the magnetic double-piece plate (31) is spliced and formed, it is in a hollow state in the middle.

7. The enteral nutrition combination infusion device according to claim 6, characterized in that: Two abutting rods (32) are installed inside the magnetic double-piece plate (31). Both of the two abutting rods (32) are composed of two elastically connected limiting arc blocks. One end of a single limiting arc block abuts against the outer wall of the gastric tube (5).

8. The enteral nutrition combination infusion device according to claim 1, characterized in that: A fixing frame (41) is sleeved on the outer wall of the upper end of the cylinder (42). The fixing frame (41) is installed on the magnetic double-piece plate (31). The abutting block (43) is elastically connected to the magnetic double-piece plate (31) through an elastic reset component (44). The top of the abutting block (43) is in the form of a circular tube sleeved outside the cylinder (42); The elastic reset component (44) is composed of a cylinder and a rigid spring. The cylinder is movably sleeved on the abutting block (43), and the two ends of the rigid spring are respectively connected to the abutting block (43) and the magnetic double-piece plate (31).

9. The enteral nutrition combination infusion device according to claim 8, characterized in that: The contact end of the abutting block (43) and the splicing frame (45) is provided with an oblique angle, and the oblique angle end abuts against the corner of the splicing frame (45); When the corrugated pipe (133) is compressed by an external force to make the gas inside it enter the inner cavity of the cylinder (42) through the hose (48), the gas inside the cylinder (42) continuously presses the abutting block (43) to move downward, so that the oblique angle end at the bottom of the abutting block (43) abuts against the splicing frame (45) to move.

10. The enteral nutrition combination infusion device according to claim 9, characterized in that: Rubber arc blocks (47) located inside the magnetic double-piece plate (31) are sleeved on both of the two limiting rods (46), and straight grooves for the linear movement of the rubber arc blocks (47) are opened on the magnetic double-piece plate (31).

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