Visual jejunum nutrient canal

Abstract

The visual jejunum nutrient canal comprises a jejunum nutrient canal body and an image sensor module, a jejunum nutrient canal cavity extending from the near end to the far end is formed in the jejunum nutrient canal body, and a first opening is formed in the near end of the jejunum nutrient canal cavity; a plurality of side holes communicated with the interior of a jejunum nutrient canal cavity are formed in the far end of the jejunum nutrient canal main body; the image sensor module is arranged at the far end of the jejunum nutrient canal, the image sensor module is provided with a camera, the camera is used for capturing an image of the far end of the jejunum nutrient canal, and the image sensor module is further provided with at least one first nozzle for spraying a cleaning agent towards the front end of the camera. According to the visual jejunum nutrient canal, by means of the image sensor module, images at the front end can be clearly observed in real time in the insertion process of the jejunum nutrient canal, and the jejunum nutrient canal can be smoothly inserted in place.

Description

Technical Field

[0001] The invention relates to the technical field of medical equipment, and in particular to a jejunal nutrition tube with a visual function. Background Art

[0002] Enteral nutrition technology is an important basic technology in the treatment of critically ill patients and an important therapeutic measure to improve patients' survival and function. Nasal intubation to the stomach (nasogastric) or small intestine (nasoenteric) is the most commonly used route for enteral nutrition technology. However, in many patients, especially critically ill patients, nasogastric nutrition may increase gastric retention, gastroesophageal reflux, and poor tolerance to enteral nutrition, which affects the effect and safety of enteral nutrition in patients, and then affects the overall long-term survival outcomes and quality of life of patients. Nasoenteric nutrition (or post-pyloric feeding) is a simple and effective nutritional approach to improve patients' feeding tolerance, reduce the risk of aspiration and pneumonia caused by gastroesophageal reflux, and ensure the effectiveness of enteral nutrition. It is also recommended by relevant domestic and international diagnosis and treatment guidelines in the professional field. For example, Zhang Li and Wang Xinying’s interpretation of the “Guidelines for the Clinical Application of Parenteral and Enteral Nutrition in Adult Patients in China (2023 Edition)” [J]. Electronic Journal of Tumor Metabolism and Nutrition, 2023, 10(06): 718-723; another example is Singer P, Blaser AR, Berger MM, et al. ESPEN practical and partially revised guideline: Clinical nutrition in the intensive care unit. Clin Nutr. 2023; 42(9): 1671-1689 [Singer P, Blaser AR, Berger MM, et al. ESPEN practical and partially revised guideline: Clinical nutrition in the intensive care unit. Clin Nutr. 2023; 42(9): 1671-1689]; and Liu Y, Wang Y, Zhang B, Wang J, Sun L, Xiao Q. Gastric-tube versus post-pyloric feeding in critical patients: a systematic review and meta-analysis of pulmonary aspiration-and nutrition-related outcomes. Eur J Clin Nutr. 2021; 75(9): 1337-1348.Nasogastric tubes (also called jejunal feeding tubes and gastrointestinal tubes) are used in all clinical departments of almost all large and medium-sized hospitals in China; however, the placement of nasogastric tubes is currently difficult. Although most can be done with blind insertion technology, it takes a long time for medical staff to learn and the patient needs to change body position. Those with difficulty still need the help of endoscopy and X-ray fluoroscopy. For example, Shi Haiyan, Liu Aihua, Ma Xiao, et al., Interpretation of the group standard for the placement and maintenance of nasogastric tubes in adults [J]. Chinese Journal of Critical Care Nursing, 2023, 4(11): 1011-10155; another example is Slingerland-Boot R, Bouw-Ruiter M, van Manen C, Arbous S, van Zanten A. Video-assisted placement of enteral feeding tubes using the Integrated Real-Time Imaging System (IRIS)-technology in critically ill patients. Clin Nutr. 2021; 40(8): 5000-5007. Figure 1 As shown in the figure, the nasogastric tube may face multiple obstacles during the placement of the tube, such as the tortuosity of the digestive tract, gastric dilatation, gastric mucosal folds, and narrow pylorus or cardia, which makes it difficult to place the tube; especially at the pylorus, which is in an S-shaped shape, and is difficult to insert blindly or pass through during X-ray fluoroscopy. These factors have greatly increased the investment of manpower, material and financial resources for both doctors and patients, and also hindered the timeliness and effectiveness of enteral nutrition treatment for clinical critically ill patients, and also increased the medical risks of patients during the placement of the tube. The use of visual technology to achieve early placement of nasogastric feeding tubes has been proven to be a safe and effective method.

[0003] There are some visual nasogastric tubes (also often called gastric tubes or intestinal tubes) that are equipped with a camera with a light source at the front end of the catheter. For example, the utility model patent with patent number CN202121376225.9 proposes a visual gastric tube, including a gastric tube body, a visual camera at one end of the gastric tube body, and an auxiliary fixing device detachably installed on the gastric tube body; a mounting seat is fixedly connected to one end of the gastric tube body, and the visual camera is installed on the mounting seat, and a transparent protective cover is installed on the outside of the visual camera. A plurality of through holes are equidistantly arranged in an annular manner on the side wall of the gastric tube body near the mounting seat, and a plurality of miniature lighting lamps are provided on the mounting seat, and the miniature lighting lamps are located in the transparent protective cover. COVIDIEN provides the IRIS visualization system, but the system only has a visualization probe.For example, Slingerland-Boot R, Bouw-Ruiter M, van Manen C, Arbous S, van Zanten A. Video-assisted placement of enteral feedingtubes using the Integrated Real-Time Imaging System(IRIS)-technology incritically ill patients. Clin Nutr. 2021; 40(8): 5000-5007, and for example, Krpasiti T, Shepherd SJ. Post-pyloric feeding tube (duodenal feeding tube) placement in mechanically ventilated patients using direct visual positioning: a single-center case series study, Intensive Crit Care Nurs.2022;70:103222 [KrpasitiT, Shepherd SJ. Bedside post-pyloric tube placement using direct visualisation in mechanically ventilated patients: A single centre case series. Intensive Crit Care Nurs.2022;70:103222], although the visualized gastric tubes involved in the above two methods can realize visualized tube placement, the bending angle of the nasogastric tube cannot be controlled, and the nasogastric tube cannot be smoothly and accurately inserted through the pylorus and duodenum of the gastric cavity into the jejunum or the required position. In addition, this type of gastric tube has a protective cover installed at the front end of the camera, which can easily cause sputum, blood, and body fluids to adhere to the protective cover and block the camera's field of view. When the front end of the gastric tube cannot be observed, especially whether it reaches the S-shaped bend, the position cannot be determined, which affects the normal intubation and causes the entire intubation process to be longer, or the gastric tube needs to be pulled out to clean the mucus blocking the camera before repeated intubation. Summary of the invention

[0004] In view of the technical problems raised by the background art, the present invention provides a visual jejunal feeding tube, in order to at least partially solve at least one of the above technical problems.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] The present invention relates to a visual jejunal nutrition tube, comprising a jejunal nutrition tube body and an image sensor module, wherein the jejunal nutrition tube body is provided with a jejunal nutrition tube lumen extending from a proximal end to a distal end, the jejunal nutrition tube lumen is provided with a first opening at the proximal end, and the distal end of the jejunal nutrition tube body is provided with a plurality of side holes communicating with the jejunal nutrition tube lumen; the image sensor module is arranged at the distal end of the jejunal nutrition tube, the image sensor module is provided with a camera, the camera is used to capture an image of the distal end of the jejunal nutrition tube, and the image sensor module is also provided with at least one first nozzle that sprays a cleaning agent toward the front end of the camera;

[0007] A first suction port is arranged on the front end face of the image sensor module, a suction channel connected to the first suction port is arranged inside the image sensor module, the suction channel is connected to a suction tube cavity arranged in the tube wall of the main body of the jejunal nutrition tube, and the first suction port is located on the opposite side of the first nozzle relative to the camera.

[0008] In a further preferred embodiment, the image sensor module is further provided with at least one second nozzle for spraying a cleaning agent toward a distal end of the jejunal feeding tube.

[0009] In a further preferred embodiment, the first nozzle and the second nozzle are integrally formed and protrude from the front end of the camera, and the first nozzle and the second nozzle are connected to the first cleaning agent lumen inside the image sensor module.

[0010] In a further preferred embodiment, the jejunal nutrition tube body is provided with a second cleaning agent lumen extending from the proximal end to the distal end, and the second cleaning agent lumen is connected to the first cleaning agent lumen at the distal end.

[0011] A further preferred embodiment further includes at least one third nozzle disposed in the lumen of the jejunal feeding tube, the third nozzle being connected to the second cleaning agent lumen, and the third nozzle being used to spray the cleaning agent toward the side hole and / or toward the distal end of the lumen of the jejunal feeding tube.

[0012] In a further preferred embodiment, the image sensor module further comprises at least one light source disposed at a distal end.

[0013] In a further preferred embodiment, the jejunal nutrition tube body is also provided with a cable lumen extending from the proximal end to the distal end, the cable is passed through the cable lumen, and the cable is connected to a camera and / or a light source at the distal end for transmitting images captured by the camera to a display device at the proximal end, and / or providing power to the camera and / or the light source.

[0014] In a further preferred embodiment, at least one second suction port is disposed on the side wall of the jejunal nutrition tube body, and the second suction port is communicated with the suction lumen in the tube wall of the jejunal nutrition tube body.

[0015] In a further preferred embodiment, the length of the image sensor module is 3-8 mm.

[0016] In a further preferred embodiment, a protrusion is formed on the front end surface of the image sensor module, the protrusion surrounds a side away from the first nozzle and has an opening facing the camera, and the first nozzle is in the same direction as the opening.

[0017] In a further preferred embodiment, a rounded transition is adopted at the connection between the front end surface of the protrusion and the side surface thereof facing the camera side, and / or a rounded transition is adopted at the connection between the side surface of the protrusion facing the camera side and the front end surface of the image sensor module, and / or a rounded transition is adopted at the connection between the front end surface of the image sensor module away from the protrusion and the side surface.

[0018] In a further preferred embodiment, the protrusion protrudes from the front end surface of the image sensor module by 1-4 mm.

[0019] In a further preferred embodiment, an inflatable cuff is disposed on the outer surface of the main body of the jejunal nutrition tube, and the inflatable cuff is disposed at the rear end of the side hole.

[0020] In a further preferred embodiment, a reinforcing steel wire is arranged in the main body of the jejunal nutrition tube. The reinforcing steel wire is spiral and embedded in the inner wall of the lumen of the jejunal nutrition tube or arranged in the wall of the main body of the jejunal nutrition tube.

[0021] A further preferred embodiment further comprises an angle adjustment device, which can be inserted into the lumen of the jejunal feeding tube to adjust the bending angle of the distal end of the jejunal feeding tube.

[0022] In a further preferred embodiment, the angle adjustment device includes a serpentine structure, a first traction guide wire, a second traction guide wire and an operating component, wherein the distal end of the serpentine structure can be inserted into the distal end of the jejunal feeding tube lumen, the distal ends of the first traction guide wire and the second traction guide wire are connected to the distal end of the serpentine structure, and the proximal ends are connected to the operating component.

[0023] In a further preferred embodiment, the operating component includes a gripping portion, a rotating shaft, a rotating plate and a toggle element, wherein the rotating shaft is rotatably arranged in the gripping portion, the rotating plate is arranged at one end of the rotating shaft located in the gripping portion, the toggle element is arranged at one end of the rotating shaft extending out of the gripping portion, and the first traction guide wire and the second traction guide wire are fixed at opposite positions along the circumference of the rotating plate.

[0024] In a further preferred embodiment, the bending angle of the snake-bone structure is 90-150 degrees.

[0025] The visual jejunal feeding tube of the present invention can obtain clear images at the far end in real time with the help of the camera in the image sensor module and the first nozzle, the second nozzle and / or the first suction port. In particular, the camera of the present invention is arranged at the front end of the jejunal feeding tube, and there is no obstruction in front of the camera lens. The collected image is clearer and the viewing angle of the camera is wider. Even if sputum, gastric contents, etc. adhere to the camera lens or in front of the camera during and after the insertion of the jejunal tube, they can be promptly rinsed and sucked away through the first nozzle, the second nozzle and / or the first suction port, so that the camera lens can be kept clean at all times. Both experienced doctors and inexperienced doctors can insert the jejunal feeding tube into place very smoothly. In addition, the third nozzle can spray a cleaning agent toward the side hole of the jejunal nutrition tube, which can prevent sputum, blood, body fluids, etc. from adhering to the surface of the jejunal nutrition tube and blocking the side hole or entering the side hole during the intubation process or after the intubation is in place, affecting the normal supply of nutrition to the patient's intestine; in addition, with the help of the angle adjustment device, the bending angle of the jejunal tube can be adjusted under visual conditions, so that it can pass through the curved intestine smoothly. Even if the front end of the jejunal nutrition tube is adhered to mucus, gastric contents, etc., the cleaning agent can be sprayed in time through the first and second nozzles to keep the camera capturing clear images at all times. The use of the visual jejunal nutrition tube of the present invention can greatly shorten the intubation time and reduce the intubation pain and medical risks suffered by patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Schematic diagram of the insertion of a jejunal feeding tube into the patient's intestines;

[0027] Figure 2 A stereoscopic diagram of an embodiment of a visual jejunal nutrition tube protected by the present invention;

[0028] Figure 3 for Figure 2 A partial enlarged view of the middle part;

[0029] Figure 4 for Figure 3 A cross-sectional view along the camera and nozzle locations;

[0030] Figure 5 A front view of an embodiment of a visual jejunal nutrition tube protected by the present invention;

[0031] Figure 6 A bottom view of an embodiment of a visual jejunal nutrition tube protected by the present invention;

[0032] Figure 7 for Figure 6 Sectional view at the middle BB;

[0033] Figure 8 for Figure 7 A partial enlarged view of point C in the middle;

[0034] Fig. 9 A three-dimensional diagram of another embodiment of the visual jejunal nutrition tube protected by the present invention;

[0035] Fig.10 A front view of another embodiment of the visual jejunal feeding tube protected by the present invention;

[0036] Fig.11 for Fig. 9 A partial enlarged view of the middle part;

[0037] Fig.12 for Fig.11 A cross-sectional view along the plane where the first nozzle, the camera and the first suction port are located;

[0038] Fig.13 for Fig.10 Sectional view at DD in the middle;

[0039] Fig.14 for Fig.10 Sectional view at EE;

[0040] Fig.15 for Fig.10 A partial enlarged view of point F in the middle;

[0041] Fig.16 for Fig.15 Sectional view at GG in the middle;

[0042] Fig.17 A partial perspective view of yet another embodiment of the visible jejunal feeding tube protected by the present invention.

[0043] In the figure: 10-jejunal nutrition tube, 11-jejunal nutrition tube body, 110-cable tube cavity, 111-jejunal nutrition tube tube cavity, 112-first opening, 113-side hole, 114-second cleaning agent tube cavity, 115-third nozzle, 116-suction tube cavity, 117-second suction port, 118-inflation tube cavity, 119-reinforcement wire, 12-image sensor module, 121-camera, 122-first nozzle, 123-second nozzle, 124- First cleaning agent lumen, 125-light source, 126-first suction port, 1261-suction channel, 13-angle adjustment device, 131-snake bone structure, 1311-sleeve, 132-first traction guide wire, 133-second traction guide wire, 134-operating component, 1341-gripping part, 1342-rotating shaft, 1343-rotating sheet, 1344-sliding element, 135-rotation control device, 1351-sliding protrusion, 14-inflatable cuff. DETAILED DESCRIPTION

[0044] 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.

[0045] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and Examples. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0046] 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. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0047] like Figure 2-Figure 17 The figures shown are various views and partial views of the visual jejunal feeding tube protected by the patent of the present invention. Figure 2 FIG. 1 is a perspective view of an embodiment of a visual jejunal feeding tube according to the present invention, wherein the visual jejunal feeding tube 10 comprises a jejunal feeding tube body 11 and an image sensor module 12. For ease of description, see Figure 2 , Figure 5 and Fig. 9 As shown, one end of the image sensor module 12 is defined as the distal end or front end, and the end where the doctor operates is defined as the proximal end or rear end. The following information about the distal end / front end and the proximal end / rear end refers to relative position relationships and is not limited to a fixed position or location.

[0048] Preferably, the jejunal nutrition tube body 11 is made of TPU or PVC material and has a certain flexibility to facilitate the bending of the jejunal nutrition tube 10, while the image sensor module 12 is made of a hard material and cannot be bent. Since a large bending angle may occur in the intestine, a longer image sensor module 12 will affect the insertion of the jejunal nutrition tube 10. For example, during the intubation process, the image sensor module 12 cannot be bent at a larger bending angle and may scrape the inner wall of the intestine or squeeze the curved part of the intestine. In severe cases, the inner wall of the intestine may be scratched. Therefore, in the present invention, the length of the image sensor module 12 is designed to be shorter. Preferably, the length of the image sensor module 12 is 3 mm-8 mm, and a more preferred length is 5 mm.

[0049] Among them, see Figure 7 and Figure 8 The jejunal nutrition tube body 11 is provided with a jejunal nutrition tube lumen 111 extending from the proximal end to the distal end, the jejunal nutrition tube lumen 111 is provided with a first opening 112 at the proximal end, and the distal end of the jejunal nutrition tube body 11 is provided with a plurality of side holes 113 connected to the inside of the jejunal nutrition tube lumen 111, and the side holes 113 are used to deliver the feeding food in the jejunal nutrition tube lumen 111 into the intestine; the image sensor module 12 is arranged at the distal end of the jejunal nutrition tube 10, and preferably, the rear end of the image sensor module 12 is sleeved on the distal end of the jejunal nutrition tube body 11 and fixed by glue.

[0050] For further information, see Figure 3 and Figure 4 The image sensor module 12 is provided with a camera 121. Preferably, the camera 121 is a high-definition micro camera for capturing images of the distal end of the jejunal feeding tube 10. The image sensor module 12 is also provided with at least one first nozzle 122 for spraying a cleaning agent toward the lens of the front end of the camera 121. Preferably, the cleaning agent is physiological saline to avoid rejection by the patient. The mucus, sputum, body fluids, etc. adhering to the lens of the camera 121 can be washed away by spraying the cleaning agent toward the camera 121 through the first nozzle 122, so that the camera 121 can always capture a clear image of the front end.

[0051] Preferably, the angle between the direction in which the first nozzle 122 sprays the cleaning agent and the surface of the camera 121 lens is 0-30 degrees, and more preferably the angle is 5-15 degrees, which is conducive to the cleaning agent wiping off the adhesion on the surface of the camera 121 lens.

[0052] Further preferably, Figure 3 , Figure 4 , Fig.11 and Fig.12As shown, the image sensor module 12 is also provided with at least one second nozzle 123 for spraying a cleaning agent toward the distal end of the jejunal nutrition tube 10. When the camera 121 collects images of mucus, sputum, etc. gathered at the front end, in order to avoid adhesion to the lens of the camera 121 or affecting the insertion of the jejunal nutrition tube, the mucus, sputum, etc. are washed away in advance through the second nozzle 123. Preferably, the direction of the second nozzle 123 spraying the cleaning agent is at an angle of 0-10 degrees to the axial direction of the camera 121, and more preferably, the angle is 3-8 degrees. As an optional embodiment, the second nozzle 123 includes a plurality of second nozzles 123, and the plurality of second nozzles 123 make the sprayed cleaning agent spread out in an umbrella shape, which is conducive to washing away the adhesions at the front end of the image sensor module in advance and effectively, and avoiding adhesion to the camera 121 and the field of view of the image observation.

[0053] Further preferably, the first nozzle 122 and the second nozzle 123 protrude from the front end of the camera 121. Preferably, the first nozzle 122 and the second nozzle 123 are formed in the image sensor module 12 by integral injection molding. Further preferably, the first nozzle 122 and the second nozzle 123 are internally connected and connected to the first cleaning agent lumen 124 inside the image sensor module 12.

[0054] Further preferably, the first nozzle 122, the second nozzle 123 and the first cleaning agent lumen 124 are integrally injection molded, the image sensor module 12 is provided with a cleaning agent lumen channel 1241, and the first cleaning agent lumen 124 is inserted into the cleaning agent lumen channel 1241 and fits tightly.

[0055] Further preferably, Figure 3 , Figure 4 , Fig.11 and Fig.12 As shown, a protrusion 1243 is formed protruding from the front end surface of the image sensor module 12. The protrusion 1243 is located on one side of the front end surface of the image sensor module 12 and has an opening 1242 facing the camera 121. The cleaning agent lumen channel 1241 extends from the inside of the image sensor module 12 to the front end through the protrusion 1243 and is connected to the opening 1242 on the side of the protrusion 1243.

[0056] Further preferably, the plane where the lens of the camera 121 is located is flush with or lower than the front end surface of the image sensor module 12, and the protrusion 1243 protrudes from the front end surface of the image sensor 12 by 1-4 mm, more preferably 2-3 mm, and optimally 3 mm.

[0057] When an object is close to the camera lens, the object distance will be too small and a clear image cannot be obtained. Therefore, in the above embodiment, the protrusion 1243 protrudes from the plane where the camera 121 lens is located, which can ensure that the camera 121 lens always maintains a certain distance from the observed object, especially when passing through a curved intestine, the protrusion 1243 preferentially contacts the inner wall of the intestine, ensuring that the camera 121 lens maintains a certain distance from the inner wall of the intestine and still obtains a clear image.

[0058] Further preferably, the first nozzle 122 and the second nozzle 123 are arranged in the cleaning agent lumen channel 1241 located at the protrusion 1243, and the first nozzle 122 is in the same direction as the opening 1242, that is, the protrusion 1243 surrounds the side away from the first nozzle 122, and forms the opening 1242 on the side of the first nozzle 122, so that the cleaning agent sprayed by the first nozzle 122 can reach the lens surface of the camera 121. It can be seen that since the first nozzle 122 and the second nozzle 123 are located at the front end of the jejunal feeding tube 10, the protrusion 1243 can protect the first nozzle 122 and the second nozzle 123, and prevent them from being squeezed and deformed during the intubation process.

[0059] Further preferably, Figure 3 and Fig.11 As shown, the connection between the front end surface of the protrusion 1243 and the side surface thereof facing the camera 121 adopts an outward-protruding rounded transition, the side surface of the protrusion 1243 on the side away from the camera 121 is consistent with the arc surface of the image sensor module 12, and the connection between the bottom of the protrusion 1243 on the side facing the camera 121 and the front end surface of the image sensor module 12 adopts an inward-concave rounded transition.

[0060] Further preferably, the image sensor module 12 also adopts an outwardly protruding rounded transition at the connection between the front end surface and the side surface on the side away from the protrusion 1243 .

[0061] Since the image sensor module 12 and the protrusion 1243 are both located at the front end of the jejunal feeding tube, the rounded transition design can effectively avoid damaging the patient's intestines or stomach during the intubation process.

[0062] Further preferably, the second nozzle 123 is flush with the front end surface of the protrusion 1243 or slightly protrudes from the front end surface of the protrusion 1243 .

[0063] Further preferably, Figure 4 and Fig.12 As shown, the jejunal nutrition tube body 11 is provided with a second cleaning agent lumen 114 extending from the proximal end to the distal end, and the second cleaning agent lumen 114 is connected at the distal end to the first cleaning agent lumen 124. The specific communication mode of the first cleaning agent lumen 124 and the second cleaning agent lumen 114 can be directly connected or connected through a separate pipeline.

[0064] Further preferably, Figure 8 As shown, at least one third nozzle 115 is disposed in the jejunal nutrition tube lumen 111, the third nozzle is connected to the second cleaning agent lumen 114, and the third nozzle 115 can spray the cleaning agent toward the side hole 113 and / or toward the distal end of the jejunal nutrition tube lumen 111. Further preferably, at least one third nozzle 115 is disposed corresponding to each side hole 113, and the third nozzle 115 is disposed on the inner wall of the jejunal nutrition tube lumen 111 opposite to the side hole 113.

[0065] Further preferably, the image sensor module 12 further comprises at least one light source 125 disposed at the far end. Preferably, the light source 125 is an LED cold light source.

[0066] Further preferably, the jejunal nutrition tube body 11 is also provided with a cable lumen 110 extending from the proximal end to the distal end, and the cable is inserted into the cable lumen 110, and the cable is connected to the camera 121 and / or the light source 125 at the distal end, and is used to transmit the image captured by the camera 121 to the display device (not shown in the figure) at the proximal end in real time, so as to facilitate the doctor to observe the situation at the front end of the camera 121 in real time, or to provide power for the camera 121 and the light source 125.

[0067] Further preferably, Figures 5 to 7 As shown, it also includes an angle adjustment device 13, which can be inserted into the jejunal feeding tube lumen 111 to adjust the bending angle of the distal end of the jejunal feeding tube 10.

[0068] Further preferably, the angle adjustment device 13 includes a serpentine structure 131, a first traction guide wire 132, a second traction guide wire 133 and an operating component 134, wherein the distal end of the serpentine structure 131 can be inserted into the distal end of the jejunal feeding tube lumen 111, the distal ends of the first traction guide wire 132 and the second traction guide wire 133 are connected to the distal end of the serpentine structure 131, and the proximal ends are connected to the operating component 134.

[0069] Further preferably, the operating component 134 includes a gripping portion 1341, a rotating shaft 1342, a rotating piece 1343 and a toggle element 1344. Preferably, the gripping portion 1341 is in a shape that is convenient for the doctor to hold, such as a handle shape. The rotating shaft 1342 is rotatably arranged on the gripping portion 1341, the rotating piece 1343 is arranged on one end of the rotating shaft 1342 located inside the gripping portion 1341, and the toggle element 1344 is arranged on one end of the rotating shaft 1342 extending out of the gripping portion 1341, and the first traction guide wire 132 and the second traction guide wire 133 are fixed at opposite positions along the circumference of the rotating piece 1343.

[0070] Further preferably, the snake-bone structure 131 of the angle adjustment device 13 can be bent at a larger angle, preferably 90-150 degrees, so that the jejunal feeding tube 10 can bypass the intestine with a larger bending angle during the insertion process.

[0071] When the serpentine structure 131 of the angle adjustment device 13 is inserted into the jejunal feeding tube lumen 111 and reaches the distal end, the first pulling guide wire 132 or the second pulling guide wire 133 can be pulled by reciprocatingly rotating the toggle element 1344, thereby controlling the serpentine structure 131 to bend, driving the front end of the jejunal feeding tube to bend in two directions, and the bending angle is adjustable. The bending direction of the jejunal feeding tube 10 can be controlled based on the bending conditions in the intestine observed by the camera, and the bending angle can also be controlled. The jejunal feeding tube 10 can be inserted into place very quickly, and even doctors without much experience can successfully complete the intubation operation to reduce operational errors.

[0072] Further preferably, Fig. 9 and Fig.10 As shown, an inflatable cuff 14 is arranged at the rear end of the side hole 113 along the outer surface of the jejunal nutrition tube body 11, and an inflation lumen 118 is arranged in the inner wall of the jejunal nutrition tube body. The inflation lumen 118 is connected to the air source at the proximal end for inflating or deflating the inflatable cuff 14 so that the inflatable cuff 14 can be switched between a filled state and a contracted state. In the figure, the inflatable cuff 14 is in a filled state.

[0073] After the jejunal feeding tube 10 is successfully inserted into the patient's intestine, the jejunal feeding tube 10 is relatively soft, and with the peristalsis of the intestine, the position of the jejunal feeding tube 10 relative to the intestine will change, affecting normal feeding. After the jejunal feeding tube 10 is successfully inserted, the inflatable cuff 14 is filled with gas through the inflation tube cavity 18, and the inflatable cuff 14 is pressed and matched with the inner wall of the intestine, so that the jejunal feeding tube 10 is positioned relative to the intestine to avoid displacement.

[0074] In order to be able to be inserted into a complex intestinal structure, the jejunal nutrition tube 10 has a main body 11 made of a flexible material. However, the flexible material may also cause other problems in tube placement. For example, the jejunal nutrition tube is easy to bend and knot, especially in the relatively empty part of the stomach, where the jejunal nutrition tube is prone to accumulation, which may cause a larger bending angle of the jejunal nutrition tube 10, and may easily cause the cavities inside the main body 11 of the jejunal nutrition tube to be blocked or the inner diameter of the cavity to be reduced, thereby affecting normal feeding and the normal supply or extraction of the gas and liquid channels, or causing problems with tube placement.

[0075] Further preferably, Fig.17As shown, in order to improve the rigidity of the jejunal nutrition tube 10, a reinforcing steel wire 119 is arranged in the jejunal nutrition tube body 11. Preferably, the reinforcing steel wire 119 is spirally shaped and embedded in the inner wall of the jejunal nutrition tube lumen 111 or the tube wall of the jejunal nutrition tube body 11. The spirally shaped reinforcing steel wire 119 can ensure that the jejunal nutrition tube 10 has a certain rigidity and can still be bent normally under the control of the angle adjustment device 13 according to the intestinal structure. The arrangement of the reinforcing steel wire 119 in this embodiment enables the jejunal nutrition tube to have a certain rigidity to solve the above-mentioned problem.

[0076] Further preferably, Fig.11 and 12 As shown, the front end surface of the image sensor module 12 is further provided with a first suction port 126, and a suction channel 1261 connected to the first suction port 126 is provided inside the image sensor module 12. A suction lumen 116 extending from the proximal end to the distal end is provided in the wall of the jejunal nutrition tube body 11, and the suction lumen 116 is connected to the suction channel 1261 in the image sensor module 12. The suction lumen 116 is connected to a suction device (not shown in the figure) at the proximal end to suck out the contents (including mucus, sputum, body fluids, gastric residues, etc.) in the intestine or stomach that are adhered to or blocked at the front end of the image sensor module 12, and combined with the above-mentioned first nozzle 122 to suck out the contents (including mucus, sputum, body fluids, gastric residues, etc.) in the intestine or stomach. When flushing the camera lens 121, the first suction port 126 can simultaneously suck out the flushed contents, further ensuring the clarity of the camera lens 121, especially after the jejunal feeding tube 10 enters the stomach. In the presence of gastric contents, the gastric contents block the front end of the camera lens 121, and the stomach is open while the pylorus is narrow. During the intubation process, it is difficult for the doctor to identify the position of the pylorus. Therefore, the setting of the above-mentioned first suction port 126 can promptly remove the gastric contents at the front end of the jejunal feeding tube 10, which helps to identify the position of the pylorus, and then the jejunal feeding tube 10 can smoothly enter the pylorus, thereby ensuring successful catheterization and greatly shortening the catheterization time.

[0077] Further preferably, the first suction port 126 is located on the opposite side of the first nozzle 122 relative to the camera 121, so that after the cleaning agent sprayed by the first nozzle 122 removes the adhesions on the lens surface of the camera 121, the cleaning agent and the adhesions directly enter the suction port 126 for absorption, avoiding secondary adhesion to the camera 121 or adhesion in the intestine, and also avoiding blockage of the feeding side hole 113.

[0078] Further preferably, near the connection position between the image sensor module 12 and the jejunal feeding tube body 11, at least one second suction port 117 is provided on the side wall of the jejunal feeding tube body 11, and the second suction port 117 is connected to the suction tube cavity 116 in the tube wall of the jejunal feeding tube body 11. Through the suction of the suction device, the contents located on the inner wall of the intestine or the stomach can be further sucked out to avoid clogging the side hole 113 used for feeding, and at the same time, the adhesions or contents that were not sucked out by the first suction port 126 can also be further sucked out.

[0079] It is further preferred that a plurality of second suction ports 117 are disposed along the longitudinal axis of the jejunal nutrition tube body 11 to increase the suction effect.

[0080] Further preferably, Fig. 9 and Fig.10 As shown, the second suction port 117 is axially located at the front end of the first side hole 113 and is not on the same straight line as the first side hole 113, so as to ensure that the jejunal nutrition tube lumen 111 connected to the first side hole 113 and the suction tube lumen 116 connected to the second suction port 117 maintain a straight extension, avoiding the intersection of the lumens or changing the extension direction, and facilitating the processing and forming of the entire jejunal nutrition tube 11 body.

[0081] Further preferably, Figures 14 to 16 As shown, the snake-bone structure 131 is disposed in a sleeve 1311 , which extends from the proximal end to the distal end and is disposed in a gripping portion 1341 at the proximal end. The first pulling guide wire 132 and the second pulling guide wire 133 are disposed in the sleeve 1311 .

[0082] Further preferably, in order to increase the adjustment mode and flexibility of the distal end of the jejunal feeding tube 10, a rotation control device 135 is further provided on the angle adjustment device 13. The rotation control device 135 is provided at the front end of the gripping portion 1341 and can be rotated left and right relative to the gripping portion 1341. The rotation control device 135 is closely matched with the proximal sleeve 1311, so that the left and right rotation operation of the rotation control device 135 synchronously drives the sleeve 1311 to rotate left and right, thereby controlling the distal serpentine structure 131 to perform left and right rotation movement. In this way, the distal end of the jejunal feeding tube 10 can be bent and rotated at a certain angle, thereby improving the flexibility of controlling the distal end of the jejunal feeding tube 10. Even more complex intestinal structures, such as the folds of the stomach wall, can pass smoothly and be placed. At the same time, the field of view of the camera 121 for collecting images is further expanded.

[0083] Further preferably, in order to facilitate the doctor's operation, a toggle protrusion 1351 is provided on the outer surface of the rotation control device 135 .

[0084] The present invention is not limited to the above-mentioned embodiments. In the case of no conflict, the above-mentioned embodiments can be recombined to form new embodiments, all of which belong to the protection scope of the present invention. The present invention is not limited to the specific structures and processes described above and shown in the figures. For the sake of simplicity, a detailed description of the known methods is omitted here. In the above-mentioned embodiments, several specific steps are described and shown as examples. However, the method process of the present invention is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications and additions, or change the order between the steps after understanding the spirit of the present invention.

[0085] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in a different order from the embodiments, or several steps can be performed simultaneously.

[0086] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the system, module and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

Claims

1. A visual jejunal nutrition tube, characterized in that: The invention comprises a jejunal nutrition tube body and an image sensor module, wherein the jejunal nutrition tube body is provided with a jejunal nutrition tube lumen extending from the proximal end to the distal end, the jejunal nutrition tube lumen is provided with a first opening at the proximal end, and the distal end of the jejunal nutrition tube body is provided with a plurality of side holes communicating with the jejunal nutrition tube lumen; the image sensor module is arranged at the distal end of the jejunal nutrition tube, the image sensor module is provided with a camera, the camera is used to capture the image of the distal end of the jejunal nutrition tube, and the image sensor module is also provided with at least one first nozzle spraying a cleaning agent toward the front end of the camera; A first suction port is arranged on the front end face of the image sensor module, a suction channel connected to the first suction port is arranged inside the image sensor module, the suction channel is connected to a suction tube cavity arranged in the tube wall of the main body of the jejunal nutrition tube, and the first suction port is located on the opposite side of the first nozzle relative to the camera.

2. The visual jejunal feeding tube according to claim 1, characterized in that: The image sensor module is also provided with at least one second nozzle for spraying a cleaning agent toward the distal end of the jejunal feeding tube.

3. The visual jejunal feeding tube according to claim 2, characterized in that: The first nozzle and the second nozzle are integrally formed and protrude from the front end of the camera. The first nozzle and the second nozzle are connected to the first cleaning agent lumen inside the image sensor module.

4. The visual jejunal feeding tube according to claim 3, characterized in that: The jejunal nutrition tube body is provided with a second cleaning agent lumen extending from the proximal end to the distal end, and the second cleaning agent lumen is communicated with the first cleaning agent lumen at the distal end.

5. The visual jejunal feeding tube according to claim 4, characterized in that: It also includes at least one third nozzle disposed in the lumen of the jejunal feeding tube, the third nozzle is connected to the second cleaning agent lumen, and the third nozzle is used to spray the cleaning agent toward the side hole and / or toward the distal end of the lumen of the jejunal feeding tube.

6. The visual jejunal feeding tube according to claim 1, characterized in that: The image sensor module also includes at least one light source disposed at a distal end.

7. The visual jejunal feeding tube according to claim 6, characterized in that: The jejunal nutrition tube body is also provided with a cable lumen extending from the proximal end to the distal end, the cable is passed through the cable lumen, and the cable is connected to the camera and / or light source at the distal end to transmit the image captured by the camera to the display device at the proximal end, and / or provide power to the camera and / or light source.

8. The visual jejunal feeding tube according to claims 1-7, characterized in that: At least one second suction port is arranged on the side wall of the jejunal nutrition tube body, and the second suction port is communicated with the suction tube cavity in the tube wall of the jejunal nutrition tube body.

9. The visual jejunal feeding tube according to any one of claims 1 to 7, characterized in that: The length of the image sensor module is 3-8 mm.

10. The visual jejunal feeding tube according to any one of claims 1 to 7, characterized in that: A protrusion is formed on the front end surface of the image sensor module. The protrusion surrounds a side away from the first nozzle and has an opening facing the camera. The first nozzle is in the same direction as the opening.

11. The visual jejunal feeding tube according to claim 10, characterized in that: A rounded corner transition is used at the connection between the front end surface of the protrusion and the side surface facing the camera, and / or a rounded corner transition is used at the connection between the side surface of the protrusion facing the camera and the front end surface of the image sensor module, and / or a rounded corner transition is used at the connection between the front end surface of the image sensor module away from the protrusion and the side surface.

12. The visual jejunal feeding tube according to claim 10, characterized in that: The protrusion protrudes from the front end surface of the image sensor module by 1-4 mm.

13. The visual jejunal feeding tube according to any one of claims 1 to 7, characterized in that: An inflatable cuff is arranged on the outer surface of the main body of the jejunal nutrition tube, and the inflatable cuff is arranged at the rear end of the side hole.

14. The visual jejunal feeding tube according to any one of claims 1 to 7, characterized in that: A reinforcing steel wire is arranged in the main body of the jejunal nutrition tube. The reinforcing steel wire is spiral and embedded in the inner wall of the lumen of the jejunal nutrition tube or arranged in the wall of the main body of the jejunal nutrition tube.

15. The visual jejunal feeding tube according to claim 5, characterized in that: It also includes an angle adjustment device, which can be inserted into the lumen of the jejunal feeding tube and is used to adjust the bending angle of the distal end of the jejunal feeding tube.

16. The visual jejunal feeding tube according to claim 15, characterized in that: The angle adjustment device includes a snake-bone structure, a first traction guide wire, a second traction guide wire and an operating component, wherein the distal end of the snake-bone structure can be inserted into the distal end of the jejunal nutrition tube lumen, the distal ends of the first traction guide wire and the second traction guide wire are connected to the distal end of the snake-bone structure, and the proximal ends are connected to the operating component.

17. The visual jejunal feeding tube according to claim 16, characterized in that: The operating component includes a gripping portion, a rotating shaft, a rotating plate and a toggle element, wherein the rotating shaft is rotatably arranged on the gripping portion, the rotating plate is arranged at one end of the rotating shaft located inside the gripping portion, the toggle element is arranged at one end of the rotating shaft extending out of the gripping portion, and the first pulling guide wire and the second pulling guide wire are fixed at opposite positions along the circumference of the rotating plate.

18. The visual jejunal feeding tube according to claim 16, characterized in that: The bending angle of the snake-bone structure is 90-150 degrees.

Images