Enteral nutrition conveying device

Abstract

The invention discloses an enteral nutrition delivery device, and relates to the field of medical nutrition treatment devices, the enteral nutrition delivery device comprises a handle, a hollow catheter is arranged in the handle in a penetrating mode, two inhaul cables used for controlling the catheter to bend are arranged in the wall of the catheter in the length direction, and the catheter can penetrate into a nutrition tube used for enteral nutrition delivery. The cable winding device further comprises a rotating sleeve, the rotating sleeve is rotationally connected to the front end of the handle, a cable winding mechanism used for winding the cables is arranged between the rotating sleeve and the handle, and when the rotating sleeve rotates, the winding and unwinding states of the two cables in the guide pipe are different. The catheter with the adjustable camber is inserted into the nutrient canal, the catheter can better adapt to individual differences and complex anatomical structures of different patients, the nutrient canal can smoothly reach the preset position, the problem that in the prior art, nutrient canal imbedding difficulty is large is effectively solved, the nutrient canal imbedding difficulty is greatly lowered, and the catheter imbedding success rate is increased.

Description

Technical Field

[0001] The invention relates to the field of medical nutrition treatment devices, in particular to an enteral nutrition delivery device. Background Art

[0002] Medical nutrition therapy includes three parts: oral nutritional supplementation, tube feeding and parenteral nutrition. Oral nutritional supplementation aims to increase oral nutritional intake. Nutrient liquids, semi-solid or powder preparations that can provide a variety of macronutrients and micronutrients are added to drinks or food for oral administration. Tube feeding is the way to deliver nutrients into the body through a catheter and absorbed through the normal gastrointestinal tract. Parenteral nutrition refers to the provision of nutrients including amino acids, fats, carbohydrates, vitamins and minerals to patients through veins.

[0003] Patients who are unable to eat orally or whose diet combined with ONS cannot reach the 60% energy target can be given tube feeding. In existing treatment options, nasogastric tube placement is often performed using gastroscopy-assisted or X-ray-assisted super-smooth guidewire method.

[0004] The steps for endoscopically assisted nasogastric tube placement are as follows: ①Insert the gastric tube into the stomach cavity through the nose; ②Apply paraffin oil on the surface of the biopsy forceps, or inject a small amount of paraffin oil into the gastric tube to reduce the friction between the biopsy forceps and the gastric tube, and then extend the biopsy forceps into the gastric tube until the front end of the gastric tube; ③Insert the rat tooth foreign body forceps through the working channel of the gastroscope and extend the end of the scope to clamp the front end of the gastric tube, then insert the scope to send the gastric tube into the duodenum; ④ The assistant fixes the gastric tube, clamps the gastric tube with a foreign body clamp to keep it in place, withdraws the gastroscope into the gastric cavity, loosens and withdraws the foreign body clamp into the gastric cavity; ⑤ The assistant pinches the gastric tube and the biopsy forceps in it to make them one, and then continues to push the gastric tube into the duodenum until the scale of the gastric tube at the pylorus is 30-40cm. After withdrawing the gastroscope, withdraw the biopsy forceps from the gastric tube.

[0005] Another X-ray-assisted super-smooth guidewire method for nasoenteric tube placement is as follows: ① The patient lies flat on his back and the catheter is inserted into the stomach using conventional gastric tube placement methods; ② Push the catheter further to the vicinity of the pylorus and insert an ultra-smooth guidewire through the tail of the catheter; ③ Continue to insert the super-smooth guidewire beyond the catheter tip, and with the assistance of X-ray fluoroscopy, send the super-smooth guidewire through the pylorus, descending part, horizontal part, and ascending part of the duodenum in sequence; ④ Continue to pass the super-smooth guide wire through the duodenal-jejunal curve into the upper jejunum; ⑤ Further push the super-slippery guide wire distally to the required position, fix the super-slippery guide wire, gently push the catheter along the super-slippery guide wire until it exceeds the tip of the super-slippery guide wire, and pull out the super-slippery guide wire.

[0006] Regarding the above-mentioned related technologies, the endoscopic-assisted nasogastric tube placement in the existing treatment plan is limited by the outer diameter of the insertion part of the gastroscope (9-13mm). For patients with duodenal stenosis, the tube cannot be placed through the gastroscope. Although the X-ray-assisted super-smooth guidewire method of nasogastric tube placement can observe the tube placement position in real time, there are radiation risks for both the operator and the patient. There is currently no dedicated medical device, and the ability to handle intestinal stenosis is limited. In summary, the enteral nutrition delivery device in the existing technology is not easy to pass through the narrow position in the intestine. Summary of the invention

[0007] Based on this, the purpose of the present invention is to provide an enteral nutrition delivery device to solve the technical problem that the enteral nutrition delivery device in the prior art is difficult to pass through the narrow position in the intestine.

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an enteral nutrition delivery device, comprising a handle, a hollow catheter passing through the handle, two cables for controlling the bending of the catheter arranged along the length direction in the catheter wall, the catheter being capable of being inserted into a nutrition tube for enteral nutrition delivery, and further comprising a rotating sleeve, the rotating sleeve being rotatably connected to the front end of the handle, and a winding mechanism for winding the cables being arranged between the rotating sleeve and the handle, and when the rotating sleeve rotates, the two cables in the catheter are in different retracted and released states.

[0009] By adopting the above technical solution, a catheter with adjustable curvature is inserted into the feeding tube, which can better adapt to the individual differences and complex anatomical structures of different patients, so that the feeding tube can smoothly reach the predetermined position, effectively solving the problem of difficulty in inserting the feeding tube in the prior art, greatly reducing the difficulty of inserting the feeding tube and improving the success rate of the insertion.

[0010] The present invention is further configured as follows: the front end of the handle is fixedly connected to a mounting shaft, the mounting shaft is coaxially rotatably connected to a first adjusting wheel and a second adjusting wheel, and is radially rotatably connected to a first take-up wheel and a second take-up wheel, a threading opening is provided on the mounting shaft, the cable in the conduit is passed through the threading opening and is respectively wound around the first take-up wheel and the second take-up wheel, a spring is provided in the rotating shaft of the first adjusting wheel and the second adjusting wheel, a transmission structure is provided between the first adjusting wheel and the first take-up wheel, and a transmission structure is also provided between the second adjusting wheel and the second take-up wheel, and the rotating sleeve can respectively rotate the first take-up wheel and the second take-up wheel to reel in the cable when rotating forward and reversely.

[0011] Preferably, the first take-up wheel and the second take-up wheel are rotated to reel in the cable, thereby achieving control over the degree of catheter bending, so that the catheter can bend in a narrow area to adapt to the intestinal curvature, which is beneficial to improving the success rate of catheterization.

[0012] The present invention is further configured such that a first fixing frame is fixedly connected to the first adjusting wheel in the rotating sleeve, and a second fixing frame is fixedly connected to the second adjusting wheel. The edges of the first adjusting wheel and the second adjusting wheel are both connected with blocking plates in an annular manner at intervals. The bottom ends of the first fixing frame and the second fixing frame are respectively rotatably connected with a first lever and a second lever for pushing the blocking plate. When the rotating sleeve rotates forward or reversely, only one of the first lever and the second lever can push the blocking plate.

[0013] Preferably, the first lever and the second lever in the rotating sleeve are used to push the corresponding blocking plates to achieve rotational adjustment of the first adjusting wheel and the second adjusting wheel respectively, and the first adjusting wheel and the second adjusting wheel respectively transmit the winding wheels adapted to themselves through the transmission structure.

[0014] The present invention is further configured such that the front end of the mounting shaft is fixedly connected with an end cover, and the end of the rotating sleeve away from the end cover is fixedly connected with a partition, the partition is rotatably connected to the mounting shaft and can also slide along the axial direction of the mounting shaft, the rotating sleeve is rotatably connected to the end cover and can also slide along the axial direction of the mounting shaft, an elastic ring is arranged between the end cover and the rotating sleeve, a limiting mechanism for limiting the rotation of the rotating sleeve by friction is arranged between the rotating sleeve and the handle, and the limiting mechanism releases the limit on the rotating sleeve when the rotating sleeve slides and squeezes the elastic ring.

[0015] Preferably, when the rotating sleeve slides toward the elastic ring, the rotation limit of the rotating sleeve can be released, so that the rotating sleeve can be rotated to achieve the winding of the target cable.

[0016] The present invention is further configured such that a friction ring is provided at the end of the rotating sleeve, and a friction plate for contacting the friction ring is provided on the handle toward the rotating sleeve. The friction plate contacts the friction ring when the elastic ring is not compressed, and does not contact the friction ring otherwise.

[0017] Preferably, the elastic force of the elastic ring can enable the rotating sleeve to quickly return to a state where the friction ring is in contact with the friction plate when not pushed.

[0018] The present invention is further configured such that a fixed sleeve is connected to an end of the outer wall of the rotating sleeve close to the handle, and a surface of the fixed sleeve is provided with anti-slip grooves, which gradually bulge from the end of the rotating sleeve toward the end cover.

[0019] Preferably, the fixed sleeve facilitates the doctor to operate the rotating sleeve with one hand.

[0020] The present invention is further configured such that the friction plate is fixedly connected to a pressing block, the pressing block is connected to the handle in a radially sliding manner along the handle, the top end of the pressing block protrudes from the side of the handle, and a spring is provided between the bottom end and the inner wall of the handle, and when the pressing block is pressed down, the friction plate is disengaged from the friction ring.

[0021] Preferably, when the pressing block is pressed down, the elastic potential energy of the clockwork spring in the first adjusting wheel or the second adjusting wheel can be released to allow the catheter to recover quickly.

[0022] The present invention is further configured such that a gear ring is provided on the inner wall of one end of the rotating sleeve facing the handle, the end of the handle is rotatably connected to a transmission shaft, one end of the transmission shaft is fixedly connected to a gear meshing with the gear ring, and the other end is fixedly connected to a third adjusting wheel, and the edge of the third adjusting wheel protrudes from the side of the handle.

[0023] Preferably, after the contact between the friction plate and the friction ring is released, the third adjustment wheel can be rotated to achieve fine adjustment of the rotation angle of the rotating sleeve, which is beneficial to further improve the accuracy of the catheter bending.

[0024] The present invention is further configured such that a pressing plate is radially slidably connected to the outer wall of the handle, the bottom surface of the pressing plate is connected to the top surface of the pressing block, and the pressing plate is provided with an adjustment port at a position corresponding to the third adjustment wheel.

[0025] Preferably, the contact between the friction plate and the friction ring is released while the pressing plate is pressed, and at the same time, the edge of the third adjusting wheel can be directly pressed to rotate the third adjusting wheel.

[0026] The present invention is further configured such that a wire guide rack for guiding the cable is installed on one side of the threading opening of the installation shaft.

[0027] Preferably, the wire rack is used to guide the cable to prevent the cable from being entangled on the transmission structure in the handle.

[0028] In summary, the present invention mainly has the following beneficial effects: The present invention can better adapt to the individual differences and complex anatomical structures of different patients by inserting a catheter with adjustable curvature into the feeding tube, so that the feeding tube can smoothly reach the predetermined position, effectively solving the problem of difficulty in inserting the feeding tube in the prior art, greatly reducing the difficulty of feeding tube insertion and improving the success rate of insertion.

[0029] The present invention controls the bending of the catheter with adjustable curvature through a cable, so that the device can be used alone or with the assistance of a gastroscope or under X-ray fluoroscopy, and is not limited by narrow sections that the gastroscope cannot pass through. The operation is simpler and faster, and the steps and time in the catheterization process are reduced, the catheterization efficiency is improved, and the workload of medical staff is reduced.

[0030] The present invention installs two sets of adjustment mechanisms with different adjustment rates on the handle part. During the operation, the doctor can adaptively select adjustment mechanisms with different rates to adjust the curvature of the catheter according to factors such as the insertion depth of the catheter, thereby improving the control sensitivity of the enteral nutrition delivery device and helping to further reduce the difficulty of catheter placement.

[0031] The present invention arranges a spring inside the adjusting wheel, so that the spring accumulates elastic potential energy when the adjusting wheel rotates to adjust the bending of the catheter. After the limit of the rotating sleeve by the friction plate of the handle part is released, the catheter can be quickly restored, which is convenient for advancing the catheter after passing through the narrow area of ​​the intestine during the operation.

[0032] The present invention realizes the rotation limit of the rotating sleeve through the static friction generated by the contact between the friction plate and the friction ring. When the limit of the rotating sleeve by the friction plate is not released, the catheter can always maintain the adjusted bending state, which is beneficial for the doctor to conveniently control the bending degree of the catheter during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A perspective view of the present invention; Figure 2 It is a three-dimensional diagram of the internal structure of the present invention; Figure 3 For the present invention Figure 2 A magnified view of middle; Figure 4 It is a three-dimensional diagram of the internal structure of the present invention from another perspective; Figure 5 For the present invention Figure 4 Enlarged view of middle B; Figure 6 This is a stereoscopic diagram of the present invention with the rotating sleeve removed; Figure 7 For the present invention Figure 6 Enlarged view of middle C; Figure 8 A three-dimensional diagram of the rotary sleeve of the present invention; Fig. 9 It is a three-dimensional view of the rotating sleeve from another perspective of the present invention.

[0034] Description of reference numerals: 1. Handle; 101. Mounting shaft; 102. Threading port; 103. End cap; 2. Rotating sleeve; 201. First fixing frame; 202. Second fixing frame; 203. Partition plate; 204. Friction ring; 205. Gear ring; 206. Fixing sleeve; 3. Conduit; 4. Cable; 5. First adjusting wheel; 6. Second adjusting wheel; 7. First take-up wheel; 8. Second take-up wheel; 9. Wire guide frame; 10. Blocking plate; 11. First lever; 12. Second lever; 13. Pressing block; 14. Friction plate; 15. Third adjusting wheel; 16. Transmission shaft; 17. Gear; 18. Pressing plate; 19. Guide column; 20. Adjusting port; 21. Elastic ring. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] The following describes an embodiment of the present invention based on its overall structure. Embodiment 1

[0037] A device for delivering enteral nutrition, see Figure 1-9 , including a handle 1, in which a hollow catheter 3 runs, specifically, two cables 4 for controlling the bending of the catheter 3 are arranged along the length direction of the wall of the catheter 3, when one of the cables 4 is pulled and reeled, the catheter 3 will bend to one side of the reeling cable 4, and the catheter 3 can be inserted into a nutrition tube for enteral nutrition delivery, so as to facilitate the catheterization operation in a narrow intestinal position.

[0038] It also includes a rotating sleeve 2, which is rotatably connected to the front end of the handle 1, and a wire-winding mechanism for winding up the cable 4 is provided between the handle 1. When the rotating sleeve 2 rotates, the two cables 4 in the catheter 3 have different winding and releasing states. The cable 4 can be wound and released by rotating the rotating sleeve 2.

[0039] In the above embodiments, please refer to Figure 2-5 A mounting shaft 101 is fixedly connected to the front end of the handle 1, and a first adjusting wheel 5 and a second adjusting wheel 6 are coaxially rotatably connected to the mounting shaft 101, and a first take-up wheel 7 and a second take-up wheel 8 for winding up the cable 4 are radially rotatably connected to the first take-up wheel 7 and the second take-up wheel 8. Specifically, when the catheter 3 is not bent, redundant cables 4 are wound around the first take-up wheel 7 and the second take-up wheel 8.

[0040] Specifically, a threading port 102 is provided on the mounting shaft 101, and the position of the threading port 102 corresponds to the position where the cable 4 in the catheter 3 passes out. The cable 4 in the catheter 3 is respectively wound around the first take-up wheel 7 and the second take-up wheel 8 after passing through the threading port 102. A wire rack 9 for guiding the cable 4 is installed on one side of the threading port 102 of the mounting shaft 101. The wire rack 9 is used to guide the cable 4 to prevent the cable 4 from being wound around the transmission structure in the handle 1.

[0041] Furthermore, a clockwork spring is provided in the rotating shaft of the first adjusting wheel 5 and the second adjusting wheel 6. When the clockwork spring rotates, the clockwork spring can accumulate elastic potential energy and can reversely drive the rotating sleeve 2 to rotate when it needs to be reset. A transmission structure is provided between the first adjusting wheel 5 and the first take-up wheel 7, and a transmission structure is also provided between the second adjusting wheel 6 and the second take-up wheel 8. Specifically, the transmission structure is a helical gear structure, and mutually meshing helical gears are provided on the edges of the first adjusting wheel 5 and the first take-up wheel 7, and mutually meshing helical gears are also provided on the edges of the second adjusting wheel 6 and the second take-up wheel 8. When the rotating sleeve 2 rotates forward and reversely, the first take-up wheel 7 and the second take-up wheel 8 can respectively rotate the winding cable 4, and the rotation of the first take-up wheel 7 and the second take-up wheel 8 can be used to wind up the cable 4, thereby realizing the control of the bending degree of the catheter 3, so that the catheter 3 can bend in a narrow area to adapt to the intestinal curvature, which is beneficial to improving the success rate of catheterization.

[0042] In the above embodiments, please refer to Figure 2-5 , Figure 8 A first fixing frame 201 is fixedly connected to the first adjusting wheel 5 in the rotating sleeve 2, and a second fixing frame 202 is fixedly connected to the second adjusting wheel 6. The edges of the first adjusting wheel 5 and the second adjusting wheel 6 are both annularly connected with blocking plates 10 at intervals. The bottom ends of the first fixing frame 201 and the second fixing frame 202 are respectively rotatably connected with a first lever 11 and a second lever 12 for pushing the blocking plate 10. When the rotating sleeve 2 rotates forward or reverse, only one of the first lever 11 and the second lever 12 can push the blocking plate 10. The first lever 11 and the second lever 12 in the rotating sleeve 2 are used to push the corresponding blocking plate 10 to realize the rotation adjustment of the first adjusting wheel 5 and the second adjusting wheel 6 respectively, and the first adjusting wheel 5 and the second adjusting wheel 6 respectively transmit the winding wheels adapted to themselves through the transmission structure.

[0043] Specifically, the rotating shafts of the first lever 11 and the second lever 12 are both arranged at their middle positions, and the first fixing frame 201 and the second fixing frame 202 are respectively arranged on different sides of the first lever 11 and the second lever 12. For example, when the rotating sleeve 2 rotates, the first lever 11 contacts the blocking plate 10 and pushes the first adjusting wheel 5 to rotate, and the second lever 12 contacts the blocking plate 10 and rotates around its own rotating shaft to avoid the blocking plate 10. Embodiment 2

[0044] A device for delivering enteral nutrition, see Figure 1-9 On the basis of embodiment one, the difference from embodiment one is that the front end of the mounting shaft 101 is fixedly connected with an end cover 103, and the end of the rotating sleeve 2 away from the end cover 103 is fixedly connected with a partition 203, and the partition 203 is rotatably connected to the mounting shaft 101 and can also slide along the axial direction of the mounting shaft 101, and the rotating sleeve 2 is rotatably connected to the end cover 103 and can also slide along the axial direction of the mounting shaft 101.

[0045] Furthermore, an elastic ring 21 is provided between the end cover 103 and the rotating sleeve 2. Specifically, in other undisclosed embodiments, the elastic ring 21 may be an elastic member such as a spring or an annular spring sheet arranged at an annular interval, which are not listed one by one in the present application. A limiting mechanism for limiting the rotation of the rotating sleeve 2 by friction is provided between the rotating sleeve 2 and the handle 1. When the rotating sleeve 2 slides and squeezes the elastic ring 21, the limiting mechanism releases the limit on the rotating sleeve 2. When the rotating sleeve 2 slides toward the elastic ring 21, the rotation limit of the rotating sleeve 2 can be released, so as to facilitate the rotation of the rotating sleeve 2 to achieve the winding of the target cable 4.

[0046] In the above embodiments, please refer to Figure 2-5 A friction ring 204 is provided at the end of the rotating sleeve 2, and a friction plate 14 for contacting the friction ring 204 is provided on the handle 1 facing the rotating sleeve 2. The friction plate 14 contacts the friction ring 204 when the elastic ring 21 is not compressed, and does not contact the friction ring 204 otherwise. The elastic force of the elastic ring 21 can quickly reset the rotating sleeve 2 to the state where the friction ring 204 contacts the friction plate 14 when it is not pushed. When it is necessary to rotate and adjust the rotating sleeve 2 to make it rotate, just push the rotating sleeve 2 forward and rotate it. The rotating sleeve 2 will automatically reset after releasing the hand.

[0047] Furthermore, a fixed sleeve 206 is connected to one end of the outer wall of the rotating sleeve 2 close to the handle 1. The surface of the fixed sleeve 206 is provided with anti-slip grooves, and gradually bulges from the end of the rotating sleeve 2 toward the end cover 103. The anti-slip grooves increase the friction between the fingers and the fixed sleeve 206 when the doctor wears gloves when rotating the rotating sleeve 2. The bulge of the fixed sleeve 206 makes it convenient for the doctor to use the thumb to push and rotate the rotating sleeve. The fixed sleeve 206 makes it convenient for the doctor to operate the rotating sleeve 2 with one hand. Embodiment 3

[0048] A device for delivering enteral nutrition, see Figure 1-9On the basis of the second embodiment, the difference from the second embodiment is that the friction plate 14 is fixedly connected to the pressing block 13, and the pressing block 13 is connected to the handle 1 along the radial sliding direction of the handle 1. The friction plate 14 and the friction ring 204 can be separated from each other in two ways. One is the axial sliding of the rotating sleeve 2 toward the end cover 103, and the other is the sliding of the friction plate 14 along the radial direction of the handle 1 toward the center of the handle 1.

[0049] Furthermore, the top of the pressing block 13 protrudes from the side of the handle 1, and a spring is provided between the bottom end and the inner wall of the handle 1 for resetting the pressing block 13. When the pressing block 13 is pressed down, the friction plate 14 is disengaged from the friction ring 204. When the pressing block 13 is pressed down, the elastic potential energy of the clockwork spring in the first adjusting wheel 5 or the second adjusting wheel 6 can be released to quickly restore the catheter 3.

[0050] In the above embodiments, please refer to Figure 4-7 A gear ring 205 is provided on the inner wall of one end of the rotating sleeve 2 facing the handle 1, and a transmission shaft 16 is rotatably connected to the end of the handle 1. One end of the transmission shaft 16 is fixedly connected to a gear 17 meshing with the gear ring 205, and the other end is fixedly connected to a third adjusting wheel 15. The edge of the third adjusting wheel 15 protrudes from the side of the handle 1. After the contact between the friction plate 14 and the friction ring 204 is released, the third adjusting wheel 15 can be rotated to achieve fine adjustment of the rotation angle of the rotating sleeve 2, which is beneficial to further improve the accuracy of the bending of the catheter 3.

[0051] Specifically, in order to maintain the engagement between the gear 17 and the gear ring 205 when the rotating sleeve 2 slides along the axial direction, the width of the gear ring 205 is greater than the width of the gear 17, and the gear 17 is located at the end of the gear ring 205 away from the handle 1 when the rotating sleeve 2 is not sliding. Similarly, the width of the blocking plate 10 matched with the first lever 11 and the second lever 12 is also wider than the first lever 11 and the second lever 12, but the first lever 11 and the second lever 12 are located at the end of the blocking plate 10 close to the handle 1 when the rotating sleeve 2 is not sliding.

[0052] Furthermore, a pressing plate 18 is radially and slidably connected to the outer wall of the handle 1, and the bottom surface of the pressing plate 18 is connected to the top surface of the pressing block 13. The pressing plate 18 is provided with an adjustment port 20 at a position corresponding to the third adjusting wheel 15. When the pressing plate 18 is pressed, the contact between the friction plate 14 and the friction ring 204 is released, and the third adjusting wheel 15 can be rotated directly by pressing the edge of the third adjusting wheel 15. Specifically, a guide column 19 is fixedly connected to the edge of the pressing plate 18 toward the handle 1, and the guide column 19 penetrates into the handle 1 and is slidably connected to the inside of the handle 1.

[0053] When the enteral nutrition delivery device is used for a specific operation, the catheter 3 is first inserted into the nutrition tube for enteral nutrition delivery, and the super-smooth guide wire is inserted through the tail of the catheter 3. During the catheter placement process, the bending angle of the catheter 3 is continuously adjusted so that the catheter 3 can quickly pass through the narrow area in the intestine. After the nutrition tube is pushed to the required position, the super-smooth guide wire and the catheter 3 are withdrawn. The specific principle of adjusting the bending of the catheter 3 is as follows: Hold the handle 1, press the fixed sleeve 206 with your thumb, and push the rotating sleeve 2 toward the elastic ring 21, so that the rotating sleeve 2 moves in the axial direction and squeezes the elastic ring 21, so that the friction plate 14 and the friction ring 204 are separated from each other, and then the rotating sleeve 2 can be rotated. After releasing the hand, the elastic force of the elastic ring 21 automatically resets the rotating sleeve 2. After the friction plate 14 contacts the friction ring 204, it will limit the rotation of the rotating sleeve 2, so that the catheter 3 maintains the required bending state; As the rotating sleeve 2 rotates, one of the first lever 11 and the second lever 12 can drive the corresponding blocking piece 10 to rotate. For example, when the first lever 11 drives the blocking piece 10 to rotate, the first adjusting wheel 5 and the rotating sleeve 2 can rotate synchronously, and when the second lever 12 contacts the corresponding blocking piece 10, it will rotate around its own rotating shaft to avoid the blocking piece 10. The first adjusting wheel 5 rotates to drive the first take-up wheel 7 to rotate and reel in one of the cables 4 through the bevel gear structure, and the other cable 4 is pulled due to the bending of the guide tube 3, so that the second take-up wheel 8 is in a synchronous release state. The second take-up wheel 8 drives the second adjusting wheel 6 to rotate through the bevel gear structure, and the rotation direction of the second adjusting wheel 6 is opposite to that of the first adjusting wheel 5. When the bending degree of the conduit 3 needs to be fine-tuned, the adjusting opening 20 of the pressing piece 18 is pressed down, and the thumb contacts the third adjusting wheel 15 while the pressing piece 18 is pressed down. As the pressing piece 18 is pressed down, the pressing block 13 is pressed down, and the friction ring 204 is disengaged from the friction plate 14. At this time, the third adjusting wheel 15 is rotated to achieve fine-tuning of the rotation angle of the rotating sleeve 2. After the fine-tuning is completed and the hand is released, the pressing block 13 is reset by the spring force, so that the friction ring 204 and the friction plate 14 are restored to contact; When it is necessary to restore the catheter 3, the position of the pressing plate 18 corresponding to the pressing block 13 is pressed, but the third adjusting wheel 15 is not pressed, so that the friction ring 204 is disengaged from the friction plate 14, and the rotating sleeve 2 can be rotated by the first adjusting wheel 5 or the second adjusting wheel 6 under the action of the spring in the rotating shaft of the first adjusting wheel 5 or the second adjusting wheel 6, so that the first take-up wheel 7 or the second take-up wheel 8 that originally took up the line releases the line, and the first take-up wheel 7 or the second take-up wheel 8 that originally released the line reels the line, so that the catheter 3 is quickly restored.

[0054] Although an embodiment of the present invention has been shown and described, this specific embodiment is merely an explanation of the present invention and is not a limitation of the invention. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contributions as needed without departing from the principles and purpose of the present invention. However, as long as they are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A device for enteral nutrition delivery, characterized in that: include: A handle (1), wherein a hollow catheter (3) is passed through the handle (1), two cables (4) for controlling the bending of the catheter (3) are arranged in the wall of the catheter (3) along the length direction, and the catheter (3) can be inserted into a nutrition tube for enteral nutrition delivery; A rotating sleeve (2) is rotatably connected to the front end of the handle (1), and a wire-reeling mechanism for reeling in the cable (4) is provided between the rotating sleeve and the handle (1). When the rotating sleeve (2) rotates, the retracted and released states of the two cables (4) in the catheter (3) are different.

2. The enteral nutrition delivery device according to claim 1, characterized in that: The front end of the handle (1) is fixedly connected to a mounting shaft (101), and the mounting shaft (101) is coaxially rotatably connected to a first adjusting wheel (5) and a second adjusting wheel (6), and is radially rotatably connected to a first take-up wheel (7) and a second take-up wheel (8), respectively; a threading opening (102) is provided on the mounting shaft (101), and the cable (4) in the guide tube (3) is passed through the threading opening (102) and is wound around the first take-up wheel (7) and the second take-up wheel (8), respectively; a spring is provided in the rotating shaft of the first adjusting wheel (5) and the second adjusting wheel (6), a transmission structure is provided between the first adjusting wheel (5) and the first take-up wheel (7), and a transmission structure is also provided between the second adjusting wheel (6) and the second take-up wheel (8), and the rotating sleeve (2) can respectively cause the first take-up wheel (7) and the second take-up wheel (8) to rotate and wind up the cable (4) when rotating forward or reversely.

3. The enteral nutrition delivery device according to claim 2, characterized in that: A first fixing frame (201) is fixedly connected to the rotating sleeve (2) towards the first adjusting wheel (5), and a second fixing frame (202) is fixedly connected to the second adjusting wheel (6). The edges of the first adjusting wheel (5) and the second adjusting wheel (6) are both annularly connected with blocking plates (10) at intervals. The bottom ends of the first fixing frame (201) and the second fixing frame (202) are rotatably connected with a first lever (11) and a second lever (12) for pushing the blocking plate (10). When the rotating sleeve (2) rotates forward or reversely, only one of the first lever (11) and the second lever (12) can push the blocking plate (10).

4. The enteral nutrition delivery device according to claim 3, characterized in that: The front end of the installation shaft (101) is fixedly connected to an end cover (103); an end of the rotating sleeve (2) away from the end cover (103) is fixedly connected to a partition plate (203); the partition plate (203) is rotatably connected to the installation shaft (101) and can also slide along the axial direction of the installation shaft (101); the rotating sleeve (2) is rotatably connected to the end cover (103) and can also slide along the axial direction of the installation shaft (101); an elastic ring (21) is provided between the end cover (103) and the rotating sleeve (2); a limiting mechanism for limiting the rotation of the rotating sleeve (2) by friction is provided between the rotating sleeve (2) and the handle (1); when the rotating sleeve (2) slides and squeezes the elastic ring (21), the limiting mechanism releases the limit on the rotating sleeve (2).

5. The enteral nutrition delivery device according to claim 4, characterized in that: A friction ring (204) is provided at the end of the rotating sleeve (2), and a friction plate (14) for contacting the friction ring (204) is provided on the handle (1) in the direction of the rotating sleeve (2), wherein the friction plate (14) contacts the friction ring (204) when the elastic ring (21) is not compressed, and does not contact the friction ring (204) otherwise.

6. The enteral nutrition delivery device according to claim 5, characterized in that: A fixed sleeve (206) is connected to one end of the outer wall of the rotating sleeve (2) close to the handle (1); the surface of the fixed sleeve (206) is provided with anti-slip grooves and gradually bulges from the end of the rotating sleeve (2) towards the end cover (103).

7. The enteral nutrition delivery device according to claim 5, characterized in that: The friction plate (14) is fixedly connected to the pressing block (13); the pressing block (13) is slidably connected to the handle (1) in the radial direction of the handle (1); the top end of the pressing block (13) protrudes from the side of the handle (1), and a spring is provided between the bottom end and the inner wall of the handle (1); when the pressing block (13) is pressed down, the friction plate (14) is out of contact with the friction ring (204).

8. The enteral nutrition delivery device according to claim 7, characterized in that: A toothed ring (205) is provided on the inner wall of one end of the rotating sleeve (2) facing the handle (1); the end of the handle (1) is rotatably connected to a transmission shaft (16); one end of the transmission shaft (16) is fixedly connected to a gear (17) meshing with the toothed ring (205); and the other end is fixedly connected to a third adjusting wheel (15); the edge of the third adjusting wheel (15) protrudes from the side of the handle (1).

9. The enteral nutrition delivery device according to claim 8, characterized in that: A pressing plate (18) is slidably connected to the outer wall of the handle (1) in a radial direction, the bottom surface of the pressing plate (18) is connected to the top surface of the pressing block (13), and the pressing plate (18) is provided with an adjustment port (20) at a position corresponding to the third adjustment wheel (15).

10. The enteral nutrition delivery device according to claim 2, characterized in that: The installation shaft (101) is provided with a wire guide frame (9) for guiding the cable (4) on one side of the threading opening (102).

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