Nasal jejunum nutrient canal imbedding guiding device

Abstract

The invention relates to the technical field of guiding devices, in particular to a nasal jejunum nutrition tube imbedding guiding device which is used for guiding the process of imbedding a flexible nasal jejunum tube into a human body. The image acquisition device acquires a picture in the direction of the advancing direction of the insertion end of the nasal jejunum tube; the bag body is arranged in a manner of extending close to the insertion end of the nasal jejunum tube; during use, the bag body does not generate binding force on the nasal jejunum tube in a low-expansion state, the shape of the nasal jejunum tube is not limited by the bag body, when the bag body is in a high-expansion state, the bag body generates binding force on the nasal jejunum tube to enable the nasal jejunum tube to be bent, and the image acquisition device comprises a camera arranged in the insertion end of the nasal jejunum tube. The insertion end of the nasointestinal tube is provided with a closing part for preventing the camera from falling off, and the problem that the throat and the pylorus cannot pass through the nasointestinal tube quickly and smoothly in the existing nasointestinal tube indwelling process can be solved by improving the existing endoscope guiding technology.

Description

Technical Field

[0001] The present invention relates to the technical field of guide devices, in particular to a guide device for inserting a nasojejunal nutrition tube. Background Art

[0002] A nasoenteral nutrition tube is a medical tube that is inserted through the nasal cavity, passes through the esophagus and stomach, and finally reaches the intestines. It plays an important role in clinical nutritional support, gastrointestinal function management, etc.

[0003] There are three ways to insert the existing nasogastric nutrition tube during the insertion process. The first is blind insertion, which relies on the doctor's experience to insert the tube. The second is X-ray guided insertion. The third is endoscope guided insertion. There are two difficult positions to insert the nasojejunal tube smoothly during the insertion process. The first position is in the nasopharynx. Patients who are awake and cooperative are prone to nausea and vomiting due to stimulation and cannot cooperate. Comatose patients are unable to pass the nasogastric nutrition tube because of the space occupied by the intubation (such as the trachea). The second position is at the pyloric orifice. The nasogastric nutrition tube currently used is water-soluble and can be effectively inserted through the insertion technique and stomach. The tube crawls through the pylorus normally through peristalsis, but for patients with gastroptosis and patients with poor peristalsis, the tube is easily folded in the stomach. Among the three existing tube placement methods, the endoscopically guided tube placement process is the most intuitive. Under the real-time image, it can avoid the epiglottis area in the throat of the human body and reduce its stimulation. At the same time, for the reason that the tube is difficult to pass due to intubation (such as trachea), the position of the intubation can be judged according to the real-time image of the intubation, so as to find the appropriate insertion angle. Therefore, the existing endoscopically guided tube placement can smoothly solve the problems existing in the tube placement process in the first position mentioned above. For the second position tube placement process, since the existing nasoenteric nutrition tubes are often unable to control the angle change of the insertion end from the outside, the difficulty of the second position still cannot be greatly helped by relying on the endoscopically guided tube placement method. It can only roughly adjust the insertion angle through the image information to increase the probability of the nasoenteric nutrition tube passing through the pylorus, but it still cannot solve the problem that the nasoenteric nutrition tube is easy to fold during the tube placement process. Summary of the Invention

[0004] The present invention provides a nasojejunal nutrition tube insertion guide device, which improves the existing endoscopic guidance technology to solve the problem that the throat and pylorus positions cannot be passed quickly and smoothly during the existing nasointestinal tube insertion process.

[0005] The technical problem solved by the present invention is achieved by adopting the following technical solutions:

[0006] The present invention provides a nasojejunal nutrition tube insertion guide device, which is used to guide the process of inserting a flexible nasojejunal tube into a human body. The device comprises:

[0007] An image acquisition device, wherein the direction of the image acquisition device capturing images is the direction of travel of the insertion end of the nasojejunal tube;

[0008] The sac is extended and arranged near the insertion end of the nasojejunal tube;

[0009] When in use, the balloon does not exert restraining force on the nasojejunal tube in a low-expansion state, and the shape of the nasojejunal tube is not restricted by the balloon. When the balloon is in a high-expansion state, the balloon exerts restraining force on the nasojejunal tube, causing it to bend.

[0010] Preferably, the image acquisition device includes a camera placed inside the insertion end of the nasojejunal tube, a host device connected to the camera and used to display the camera capture image, and a wire used to connect the camera and the host device. The insertion end of the nasojejunal tube is provided with a closing portion to prevent the camera from falling out.

[0011] Preferably, the input end of the sac is connected to an inflation tube, and the other end of the inflation tube is connected to an inflation device.

[0012] Preferably, the balloon generates a restraining force on the nasojejunal tube to cause it to bend in a highly expanded state by setting the balloon so that the elastic modulus on one side is greater than the elastic modulus on the other side.

[0013] Preferably, the balloon generates a restraining force on the nasojejunal tube to cause it to bend in a highly expanded state by setting the balloon into a curved shape.

[0014] Preferably, the camera is a camera with an illumination light source.

[0015] Preferably, a protective layer is provided on the outside of the wire, and the outside of the protective layer has a plurality of ribs evenly spaced and circumferentially arranged, and the capsule is located between two ribs.

[0016] Preferably, a through hole for the wire to pass through is provided in the middle of the capsule.

[0017] The beneficial effects of the present invention are: by improving the nasoenteral nutrition tube, it is possible to obtain an image of the direction of travel of the insertion end of the nasojejunal tube during the placement process, and at the same time, a capsule is provided to adjust the bending state of the nasojejunal tube, so that it can quickly pass through the pyloric area.

[0018] By setting the elastic modulus of the balloon on one side to be greater than the elastic modulus of the other side or setting the balloon to a shape that can bend in a highly expanded state, the balloon can drive the nasojejunal tube to bend in a highly expanded state, so that people can quickly make the insertion end of the nasojejunal tube enter the pylorus. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 A schematic diagram illustrating the use of the first embodiment of the guiding device provided by the present invention;

[0021] Figure 2 A schematic diagram of a first embodiment of a guiding device provided by the present invention;

[0022] Figure 3 The present invention provides Figure 2 Schematic diagram of the enlarged structure at A in the middle;

[0023] Figure 4 The present invention provides Figure 2 Schematic diagram of the enlarged structure at B in the middle;

[0024] Figure 5 The present invention provides Figure 1 Schematic diagram of the cross-sectional structure;

[0025] Figure 6 The present invention provides Figure 5 Schematic diagram of the enlarged structure at E in the middle;

[0026] Figure 7 A schematic diagram illustrating the use of the second embodiment of the guide structure provided by the present invention;

[0027] Figure 8 A schematic diagram of a second embodiment of the guiding device provided by the present invention;

[0028] Figure 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at C in the middle;

[0029] Figure 10 For the present invention Figure 8 Schematic diagram of the enlarged structure at D in the middle;

[0030] Figure 11 A schematic diagram of the airbag shape structure of the first embodiment of the guiding device provided by the present invention;

[0031] Figure 12 A schematic diagram of the airbag shape structure of the second embodiment of the guiding device provided by the present invention;

[0032] Figure 13 This is a schematic diagram of the structure of the nasojejunal tube of the present invention placed near the pylorus;

[0033] Figure 14 This is a schematic structural diagram of the position where the nasojejunal tube passes through the pylorus of the present invention;

[0034] Figure 15 Schematic diagram of the structure of the camera and air bag of the nasojejunal tube of the present invention during use.

[0035] In the figure, 1. wire; 101. protective layer; 102. rib; 2. camera; 3. inflation tube; 4. airbag; 401. first side; 402. second side; 403. through hole; 5. nasojejunal tube; 501. insertion end; 502. closing part; 503. side hole; 6. nasal cavity; 7. esophagus; 8. stomach; 9. intestine; 10. pylorus; 11. host device; 12. inflation device. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below with reference to specific illustrations.

[0037] The present invention provides a nasojejunal feeding tube insertion guide device, which mainly includes an image acquisition device for obtaining the direction of travel of the insertion end 501 of the nasojejunal tube 5 and a balloon for changing the bending direction of the insertion end 501 of the nasojejunal tube 5. Specifically, when the balloon is in a low-expansion state, it does not exert a restraining force on the nasojejunal tube 5, so the shape of the nasojejunal tube 5 is not restricted by the balloon. When the insertion end 501 of the nasojejunal tube 5 enters the stomach 8, it needs to pass through the pylorus 10. The high-expansion balloon bends in the expanded state, driving the nasojejunal tube 5 to bend, thereby allowing a person to better insert the insertion end 501 of the nasojejunal tube 5 into the pylorus 10 by combining the image information externally. The solution of the present invention will be described in detail below with two specific embodiments.

[0038] Before describing the two embodiments, in order to enable those skilled in the art to clearly understand the use process of the present invention, the object of the device of the present invention is first described. The object is the nasojejunal tube 5. The nasojejunal tube 5 is usually made of flexible materials, such as TPU thermoplastic polyurethane, polyvinyl chloride, silicone rubber and other materials. The currently commonly used material is TPU, which is a long tubular structure with a hollow interior. The two embodiments of the guide device of the present invention below are both used by being built into the hollow position of the tubular structure, that is, one end of the nasojejunal tube 5 is a reserved end, and the other end is an insertion end 501. A side hole 503 is provided on the side wall near the insertion end 501. The insertion end 501 enters the human body through the nasal cavity 6, and the reserved end is used for manual manipulation (rotation, pushing or pulling, etc.) by the person to realize the control of the movement of the insertion end 501 (rotation, forward or backward), so that the insertion end 501 of the nasojejunal tube 5 enters the intestinal 9 position.

[0039] First reference Figures 1-6 , which is a drawing related to the first embodiment of the present invention. In the first embodiment of the present invention, the guiding device includes a camera 2, a guide wire 1, a bladder and an inflation tube 3. Figure 1 and Figure 5 and Figure 6 , place the camera 2 and the balloon into the interior of the nasojejunal tube 5, wherein the camera 2 is located inside the insertion end 501 of the nasojejunal tube 5, and its shooting direction is the insertion direction of the insertion end 501 of the nasojejunal tube 5. The camera 2 should use a camera 2 with a built-in lighting function to obtain a brighter image. The balloon is placed near the insertion end 501 of the nasojejunal tube 5 and extends a certain length. In the non-inflated state or in the state of insufficient inflation, the balloon basically does not exert force on the nasojejunal tube 5. At this time, the shape of the nasojejunal tube 5 is determined by itself. The flexibility of the balloon is determined by the flexibility of the balloon body. When the balloon is in a highly expanded state, the balloon bends, and while bending itself, it generates a force on the nasojejunal tube 5, thereby causing the nasojejunal tube 5 to bend. Specifically, the camera 2 is connected to the host device 11 through a wire 1. The host device 11 is mainly used to control the lighting function and display the image collected by the camera 2. When in use, one end of the wire 1 is connected to the camera 2 inside the nasojejunal tube 5 and extends out from the reserved end of the nasojejunal tube 5. The other end is connected to the host device 11, and at least the wire 1 is in the nasojejunal tube 5. The outer portion of the internal extension is provided with a protective layer 101, and the outer portion of the protective layer 101 is provided with ribs 102. The ribs 102 are evenly spaced and circumferentially distributed. The diameter of the circle formed by the outer edges of the plurality of ribs 102 is not greater than the inner wall diameter of the nasojejunal tube 5, ensuring that the guide wire 1 can be smoothly inserted into the inner portion of the nasojejunal tube 5. In this embodiment, the capsule is provided between two adjacent ribs 102, one side of which is connected to the outer wall of the protective layer 101 (the specific connection method can be an adhesive connection), and the elastic modulus of the side of the capsule connected to the protective layer 101 is less than The elastic modulus of the opposite side, that is, the capsule has two opposite sides, namely the first side 401 and the second side 402. Since the first side 401 is adhered and connected to the protective layer 101, its expansion is affected by the adhesion connection during expansion and its deformation is small. However, since the second side 402 opposite to the first side 401 is not connected to other objects, its expansion process is not affected and it expands more, so that the expanded capsule presents a curved shape. Of course, the capsule can also be not connected to the protective layer 101 to achieve the elastic modulus of the second side 402 being greater than the elastic modulus of the first side 401. Figure 11As shown in Figure a, the first side 401 and the second side 402 are both made of the same expandable material such as silicone or rubber, but the thickness of the first side 401 is greater than that of the second side 402, resulting in that during the overall inflation of the balloon, the deformation of the first side 401 is smaller than that of the second side 402, thereby causing the balloon to bend in a highly expanded state. Since the balloon is bent in a highly expanded state, a force will act on the nasojejunal tube 5 during the bending process, which can drive the nasojejunal tube 5 to bend. External personnel can rotate and push the nasojejunal tube 5, which makes it easier for the insertion end 501 of the nasojejunal tube 5 to enter the pylorus 10. Specifically, as shown in Figure a, the first side 401 and the second side 402 are both made of the same expandable material such as silicone or rubber. Figure 11 As shown in FIG. 2 , the balloon is curved in a highly inflated state, driving the nasojejunal tube 5 to bend. This can also be achieved through its own original shape, that is, the balloon is originally curved, that is, when not inflated or not fully inflated, it is in a curved shape. When the balloon is in a highly inflated state, it applies a force to drive the nasojejunal tube 5 to bend. It should be further explained that, in addition to the fact that the expansion of the balloon itself increases the bending resistance of the nasojejunal tube 5, the materials used for the remaining components, such as the guide wire 1, the protective layer 101, the inflation tube 3, etc., have little effect on the flexibility of the nasojejunal tube 5 itself. The above is an explanation of the first embodiment provided by the present invention.

[0040] refer to Figure 7-10 The second embodiment of the present invention is a structural schematic diagram. The main difference from the first embodiment is that in this embodiment, the capsule has a through hole 403. At the same time, the wire 1 is thinner than that of the first embodiment and can pass through the through hole 403 on the capsule. When in use, the camera 2 is still placed inside the insertion end 501 of the nasojejunal tube 5. One end of the wire 1 is connected to the camera 2 and is connected to the external host device 11 after extending inside the nasojejunal tube 5 to realize the collection of the picture. The inflation tube 3 is also connected to the capsule and extends to the outside of the nasojejunal tube 5 and is connected to the inflation device 12. The advantage of this implementation method is that it can be applied to larger capsules than the first embodiment. For capsules of the same material thickness, the larger capsule can have a greater force acting on the nasojejunal tube 5 when it bends, causing the nasojejunal tube 5 to bend. The specific capsule shape can be referred to. Figure 12 , when designing, you can use Figure 12 The first side 401 and the second side 402 shown in b have different elastic moduli, so that when in a highly expanded state, the capsule bends or Figure 12 As shown in FIG. 1 , the balloon itself is curved in shape and can also bend to drive the nasojejunal tube 5 to bend when in a highly expanded state.

[0041] Specific use process, because the main innovation point of the application is aimed at the problem, in the process of nasojejunal tube 5 into the human body, can smoothly through the throat and pylorus 10 position, and the throat position in the image information collected by camera 2, namely, the realization of accurate push, so that the nasojejunal tube 5 smoothly into the esophagus 7, so in the stomach 8 when not into the human body, the capsule is in the state of not inflation, ensure the flexibility of the nasojejunal tube 5 itself, and when the insertion end 501 into the stomach 8 of the human body (insertion end 501 through the cardia, the cardia is the connection between the esophagus and the stomach 8, which is the output end of the esophagus or the input end of the stomach 8), due to the angle limitation of the cardia, the insertion end 501 of the nasojejunal tube 9 cannot be directed to the direction of the pylorus 10, the pylorus 10 is the connection position of the intestinal tract and the stomach, at this time, it is very difficult to use blind insertion, even with the help of the picture, it is also difficult to realize the insertion end 501 through the pylorus 10 into the intestinal tract in a short time, the nasojejunal tube 5 out of the cardia is difficult to align the pylorus 10, so in order to realize the insertion end 501 of the nasojejunal tube 5 running direction aligning the pylorus 10, the nasojejunal tube 5 needs to be bent, thus, when the insertion end 501 of the nasojejunal tube 5 enters the stomach 8 and cannot align the pylorus 10, the capsule is inflated, the capsule is bent in the high inflation state, and the force is applied to the position close to the insertion end 501 of the nasojejunal tube 5, if the bending direction deviates from the direction of the pylorus 10, the insertion end 501 can be aligned with the pylorus 10 by rotating the reserved end of the nasojejunal tube 5, when the insertion end 501 of the nasojejunal tube 5 aligns with the pylorus 10, as shown in Figure 13 , by pushing the nasojejunal tube 5, the success rate of tube placement can be greatly increased, and the tube placement time can be saved, when the insertion end 501 enters the pylorus 10, a certain length is pushed slightly, and the capsule is deflated, at this time, the nasojejunal tube 5 returns to a soft state, and the nasojejunal tube 5 can be continuously pushed to the state as shown in Figure 14 , until the insertion end 501 reaches the ideal position of the intestinal tract 9, the camera 2, the wire 1 and the capsule are pulled out from the inside of the nasojejunal tube 5, and the nasojejunal tube 5 can be used.

[0042] It needs to be further explained that the existing nasojejunal tube 5 is mostly internally hollow insertion end 501, which is closed, that is, the closed part 502 (not limited to the flat closed part in the attached Figure 6 , it can also be a tapered closed part), the closed part of the insertion end 501 can prevent the camera 2 from detaching from the insertion end 501. The host device 11 and the inflation device 12 provided by the application are shown in Figure 15 , as shown in Figure 15 , the structure of the second embodiment is shown, one end of the wire 1 is connected with the camera 2, the other end is connected with the host device 11, one end of the inflation pipe 3 is connected with the inflation device 12, and the other end is connected with the capsule.

[0043] Furthermore, the present invention uses the highly expanded state of the balloon to drive the nasojejunal tube 5 to bend, so that its insertion end 501 can be aligned with the pylorus 10 after coming out of the cardia. It also has the advantage that in the process of pushing the insertion end 501 into the pylorus 10, since the balloon is in a highly expanded state, the hardness of the nasojejunal tube 5 itself is also increased, and the nasojejunal tube 5 will not be excessively bent, causing the folding point to scratch the inner wall of the stomach 8. After passing through the pylorus 10, the balloon is deflated, which can restore the nasojejunal tube 5 to a more flexible state, thereby facilitating continuous pushing, so that the insertion end 501 enters the intestine 9 and adapts to the curvature of the intestine 9.

[0044] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A nasojejunal nutrition tube insertion guiding device, which is used to guide the process of inserting a flexible nasojejunal tube (5) into a human body, the device comprising: An image acquisition device, wherein the direction of the image acquisition device capturing the image is the direction of travel of the insertion end (501) of the nasojejunal tube (5); The sac is extended and arranged near the insertion end (501) of the nasojejunal tube (5). It is characterized in that When in use, the sac does not generate a restraining force on the nasojejunal tube (5) in a low-expansion state, and the shape of the nasojejunal tube (5) is not restricted by the sac. When the sac is in a high-expansion state, the sac generates a restraining force on the nasojejunal tube (5) to cause it to bend.

2. The nasojejunal nutrition tube insertion guide device according to claim 1, characterized in that: The image acquisition device comprises a camera (2) placed inside an insertion end (501) of a nasojejunal tube (5), a host device (11) connected to the camera (2) and used to display images captured by the camera (2), and a wire (1) used to connect the camera (2) to the host device (11). The insertion end (501) of the nasojejunal tube (5) is provided with a closing portion (502) for preventing the camera (2) from falling out.

3. The nasojejunal nutrition tube insertion guide device according to claim 1, characterized in that: The input end of the sac is connected to an inflation tube (3), and the other end of the inflation tube (3) is connected to an inflation device.

4. The nasojejunal nutrition tube insertion guide device according to claim 1, characterized in that: The balloon generates a restraining force on the nasojejunal tube (5) in a highly expanded state to cause it to bend by setting the balloon so that the elastic modulus on one side is greater than the elastic modulus on the other side.

5. The nasojejunal nutrition tube insertion guide device according to claim 1, characterized in that: The balloon generates a restraining force on the nasojejunal tube (5) in a highly expanded state to cause the tube to bend, which is achieved by setting the balloon into a curved shape.

6. The nasojejunal nutrition tube insertion guide device according to claim 2, characterized in that: The camera (2) is a camera (2) having an illumination light source.

7. The nasojejunal nutrition tube insertion guide device according to claim 2, characterized in that: The outside of the wire (1) is provided with a protective layer (101), the outside of the protective layer (101) has a plurality of convex ribs (102) evenly spaced and circumferentially arranged, and the capsule is located between two convex ribs (102).

8. The nasojejunal nutrition tube insertion guide device according to claim 2, characterized in that: A through hole (403) for the wire (1) to pass through is provided in the middle of the capsule.

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