Visual and adjustable jejunum nutrient canal

Abstract

The visual and adjustable 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; the angle adjusting device can be inserted into a cavity of the jejunum nutrient canal and is used for adjusting the bending angle of the far end of the jejunum nutrient canal. According to the visual and adjustable jejunum nutrient canal, by means of the image sensor module and the angle adjusting device, 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 present invention relates to the technical field of medical devices, and particularly to a jejunal nutrition tube with visible and adjustable functions. Background Art

[0002] Enteral nutrition technology is an important basic technology in the treatment of critically ill patients and an important treatment measure to improve the survival and function of patients. Inserting a tube through the nose into the stomach (nasogastric) or small intestine (nasointestinal) is the most commonly used route for enteral nutrition technology. However, in many patients, especially critically ill patients, nasogastric nutrition may lead to increased gastric retention, gastroesophageal reflux, and poor tolerance of enteral nutrition, thus affecting the effectiveness and safety of enteral nutrition in patients, and then affecting the overall long-term survival outcome and quality of life of patients. Nasointestinal nutrition (or post-pyloric feeding) is a simple and effective nutritional route to improve the feeding tolerance of patients, 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 foreign clinical practice guidelines in the professional field. For example, Zhang Li, Wang Xinying, "Interpretation of the Chinese Clinical Application Guidelines for Parenteral and Enteral Nutrition in Adult Patients (2023 Edition)" [J]. Electronic Journal of Oncology Metabolism and Nutrition, 2023, 10(06): 718-723; Another example is the partially revised version of the ESPEN practical guidelines by Singer P, Blaser AR, Berger MM, etc.: 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, Application of Gastric Tube Feeding and Post-Pyloric Feeding (Duodenal Feeding) in Critically Ill Patients: A Systematic Review and Meta-Analysis of Pulmonary Aspiration and Nutrition-Related Outcomes. Eur J Clin Nutr. 2021; 75(9): 1337-1348 [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].Naso-gastrointestinal tubes (or jejunal feeding tubes, gastro-intestinal tubes) are used in various clinical departments of almost all large and medium-sized hospitals in China; however, the placement of naso-gastrointestinal tubes is currently difficult. Although most can use blind insertion techniques, it takes a long time for medical staff to learn, and patients need to change positions. For difficult cases, endoscopes or X-ray fluoroscopy are still required. For example, Interpretation of the Group Standard of "Indwelling and Maintenance of Nasointestinal Tubes in Adults" by Shi Haiyan, Liu Aihua, Ma Xiao, etc. [J]. Chinese Journal of Critical and Emergency 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 in critically ill patients using an integrated real-time imaging system (IRIS), Clin Nutr. 2021; 40(8): 5000-5007 [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]. As follows. Figure 1 As shown in , the naso-intestinal tube may face multiple obstacles during catheterization, such as digestive tract flexion, gastric dilation, gastric mucosal folds, narrow pylorus or cardia, etc., which brings difficulties in catheterization; especially at the pylorus, the pylorus is in an S-shaped bend, and it is difficult to pass through during blind insertion and X-ray fluoroscopy operations. These factors have greatly increased the investment of human, material and financial resources on both doctors and patients, and also hindered the timeliness and effectiveness of enteral nutrition treatment for critically ill patients in clinical practice, and increased the medical risks of patients during catheterization. Using visual technology to achieve early indwelling of naso-intestinal feeding tubes has been proven to be a safe and effective method.

[0003] There are now some visible nasogastric tubes (also often referred to as gastric tubes and intestinal tubes) with a light source camera at the front end of the catheter. For example, the utility model patent with the patent number CN202121376225.9 proposes a visual gastric tube, which includes a gastric tube body. One end of the gastric tube body is provided with a visual camera, and an auxiliary fixing device is detachably installed on the gastric tube body. One end of the gastric tube body is fixedly connected with a mounting seat, the visual camera is installed on the mounting seat, and a transparent protective cover is installed outside the visual camera. A plurality of through holes are annularly and equidistantly penetrated through the side wall of the gastric tube body close to the mounting seat. A plurality of micro-lighting lamps are provided on the mounting seat, and the micro-lighting lamps are located inside the transparent protective cover. COVIDIEN company provides the IRIS visualization system, but this 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 feeding tubes using the Integrated Real-Time Imaging System (IRIS) technology in critically ill patients. Clin Nutr. 2021;40(8):5000-5007 [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], and for example, Krpasiti T, 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 [Krpasiti T, 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 visual gastric tubes involved in both of the above can achieve visual catheter placement, the nasogastric intestinal tube cannot control the bending angle, and it is impossible to smoothly and accurately insert the nasogastric intestinal tube through the pylorus and duodenum of the gastric cavity into the jejunum or the required position. Moreover, a protective cover is installed at the front end of this gastric tube, and it is very easy for sputum, blood, and body fluids to adhere to the protective cover, blocking the field of view of the camera. When it is impossible to observe the front end of the gastric tube, especially whether it reaches the S-shaped bending part, it is impossible to determine the orientation, which affects the normal catheter placement in place, resulting in a longer whole catheterization process, or the need to withdraw the gastric tube to clean the mucus blocking the camera and then repeat the catheterization. Summary of the Invention

[0004] In view of the technical problems raised in the background art, the present invention provides a visible and adjustable jejunal nutrition 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] It also includes an angle adjustment device for adjusting the bending angle of the distal end of the jejunal nutrition tube;

[0008] The angle adjustment device can be inserted into the lumen of the jejunal nutrition tube, or the front end of the angle adjustment device is arranged in a separate angle adjustment lumen of the jejunal nutrition tube;

[0009] The angle adjustment device comprises 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, the snake-bone structure is arranged in a sleeve, the sleeve extends from the proximal end to the distal end, and the first traction guide wire and the second traction guide wire are arranged in the sleeve;

[0010] The angle adjustment device also includes a rotation control device for controlling the snake structure to rotate. A toggle protrusion is provided on the outer surface of the rotation control device, and the rotation control device is closely matched with the proximal sleeve, so that the rotation of the rotation control device drives the sleeve and the snake structure to rotate synchronously.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] In a further preferred embodiment, the image sensor module further comprises at least one light source disposed at a distal end.

[0015] 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.

[0016] 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.

[0017] In a further preferred embodiment, a reinforcing steel wire is arranged in the main body of the jejunal nutrition tube, and the reinforcing steel wire is spirally shaped 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.

[0018] In a further preferred embodiment, the bending angle of the snake-bone structure is 90-150 degrees.

[0019] In a further preferred embodiment, a first suction port is disposed on the front end surface of the image sensor module, a suction channel connected to the first suction port is disposed in the image sensor module, and the suction channel is connected to a suction lumen disposed in the wall of the main body of the jejunal nutrition tube.

[0020] In a further preferred embodiment, the first suction port is located on the opposite side of the first nozzle relative to the camera.

[0021] 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.

[0022] In a further preferred embodiment, the length of the image sensor module is 3-8 mm.

[0023] 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.

[0024] In a further preferred embodiment, a reinforcing steel wire is arranged in the main body of the jejunal nutrition tube, and the reinforcing steel wire is spirally shaped 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.

[0025] The visible and adjustable jejunal feeding tube of the present invention can obtain clear real-time images of the distal end by means of the camera in the image sensor module, as well as 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, so the collected images are clearer and the viewing angle of the camera is wider. Moreover, even during the insertion of the jejunal tube and after the jejunal tube is placed, if sputum, gastric contents, etc. adhere to the camera lens or in front of the camera, they can be washed and sucked off in time through the first nozzle, the second nozzle and / or the first suction port, keeping the camera lens clean at all times. Combined with the angle adjustment device, both experienced doctors and inexperienced doctors can smoothly insert the jejunal feeding tube in place. With the aid of the angle adjustment device, the present invention can adjust the bending angle of the jejunal tube visually and can smoothly pass through the curved intestine. Even when encountering a relatively complex intestinal structure, since the angle adjustment device also includes a rotation control device, it can not only achieve the bending of the front-end snake bone structure, but also achieve the rotation of the snake bone structure, thereby realizing the adjustment of any bending angle of the jejunal feeding tube. Under visual conditions, it can still smoothly pass through the complex intestine and be inserted in place. And even if mucus, gastric contents, etc. adhere to the front end of the jejunal feeding tube, the first nozzle and the second nozzle can spray cleaning agents in time to always keep the camera capturing clear images. Using the visible jejunal feeding tube of the present invention can greatly shorten the intubation time, reduce the intubation pain suffered by patients and medical risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of the insertion of the jejunal feeding tube into the patient's intestine;

[0027] Figure 2 is a perspective view of an embodiment of the visible jejunal feeding tube protected by the present invention;

[0028] Figure 3 is Figure 2 a partial enlarged view of part A in

[0029] Figure 4 is Figure 3 a cross-sectional view along the positions of the camera and the nozzle;

[0030] Figure 5 is a front view of an embodiment of the visible jejunal feeding tube protected by the present invention;

[0031] Figure 6 is a bottom view of an embodiment of the visible jejunal feeding tube protected by the present invention;

[0032] Figure 7 is Figure 6 a cross-sectional view taken along line B-B in

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

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

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

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

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

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

[0039] Figure 14 for Figure 10 Sectional view at EE;

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

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

[0042] Figure 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] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0045] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. For the purpose of making the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. 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 some of these specific details. The following description of the embodiments is only provided to provide a better understanding of the present invention by showing examples of the present invention.

[0046] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, the elements defined by the statement "including..." do not exclude the existence of additional identical elements in the process, method, article or device including the said elements.

[0047] As Figures 2 - 17 shown, the views and partial views of the visible adjustable jejunal feeding tube protected by the present invention patent are shown. Among them Figure 2 is a perspective view of an embodiment of the visible adjustable jejunal feeding tube of the present invention. The visible adjustable jejunal feeding tube 10 includes a jejunal feeding tube main body 11 and an image sensor module 12.

[0048] For ease of explanation, referring to Figure 2 、 Figure 5 and Figure 9 shown, one end of the image sensor module 12 is defined as the distal end or the front end, and the end where the doctor operates is defined as the proximal end or the rear end. The following descriptions of the distal / front end and the proximal / rear end refer to the relative position relationship and are not limited to a certain fixed part or position.

[0049] Preferably, the jejunal feeding tube body 11 is made of TPU or PVC material and has a certain flexibility to facilitate the bending of the jejunal feeding tube 10. The image sensor module 12 is made of a rigid material and cannot be bent. Since there will be large bending angles in the intestine, the long image sensor module 12 will affect the insertion of the jejunal feeding tube 10. For example, during the intubation process, at the part with a large bending angle, due to the inability of the image sensor module 12 to bend, it will scrape the inner wall of the intestine or squeeze the bent part of the intestine. In severe cases, it will scratch the inner wall of the intestine. Therefore, in the present invention, the length of the image sensor module 12 is designed to be short. Preferably, the length of the image sensor module 12 is 3 mm - 8 mm, and more preferably the length is 5 mm.

[0050] Among them, referring to Figure 7 and Figure 8 , a jejunal feeding tube lumen 111 extending from the proximal end to the distal end is provided inside the jejunal feeding tube body 11. The jejunal feeding tube lumen 111 has a first opening 112 at the proximal end, and a plurality of side holes 113 communicating with the inside of the jejunal feeding tube lumen 111 are provided at the distal end of the jejunal feeding tube body 11. The side holes 113 are used to send the feeding food in the jejunal feeding tube lumen 111 into the intestine; the image sensor module 12 is arranged at the distal end of the jejunal feeding tube 10. Preferably, the rear end of the image sensor module 12 is sleeved on the distal end of the jejunal feeding tube body 11 and fixed by adhesive bonding.

[0051] Furthermore, referring to Figure 3 and Figure 4 , the above-mentioned image sensor module 12 is provided with a camera 121. More preferably, the camera 121 is a high-definition micro camera for capturing the image at 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 towards the front end of the camera 121. Preferably, the cleaning agent is physiological saline to avoid rejection reactions in patients. By spraying the cleaning agent towards the camera 121 through the first nozzle 122, mucus, sputum, body fluids, etc. adhering to the lens of the camera 121 can be washed away, and the camera 121 can always capture clear images at the front end.

[0052] Preferably, the angle between the direction of spraying the cleaning agent by the first nozzle 122 and the surface of the camera 121 lens is 0 - 30 degrees, and more preferably the angle is 5 - 15 degrees, which is beneficial to wiping off the adhesives on the surface of the camera 121 lens.

[0053] More preferably, as Figure 3 , Figure 4 , Figure 11 and Figure 12As shown, the image sensor module 12 is further provided with at least one second nozzle 123 that sprays a cleaning agent toward the distal end of the jejunal feeding tube 10. When the camera 121 captures images of mucus, sputum, etc. accumulating at the front end, in order to avoid adhesion to the lens of the camera 121 or affecting the insertion of the jejunal feeding tube, the mucus, sputum, etc. are washed away in advance through the second nozzle 123. Preferably, the angle between the direction of the cleaning agent sprayed by the second nozzle 123 and the axis of the camera 121 is 0 - 10 degrees, and more preferably, the angle is 3 - 8 degrees. As an alternative embodiment, there are multiple second nozzles 123. The multiple second nozzles 123 cause the sprayed cleaning agent to spread in an umbrella shape, which is beneficial to wash away the adhesives at the front end of the image sensor module in advance and effectively, and avoid adhesion to the camera 121 and affecting the viewing field.

[0054] 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 interiors of the first nozzle 122 and the second nozzle 123 are connected and communicate with the first cleaning agent lumen 124 inside the image sensor module 12.

[0055] 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. The first cleaning agent lumen 124 is inserted into the cleaning agent lumen channel 1241 and fits tightly.

[0056] Further preferably, as Figure 3 、 Figure 4 、 Figure 11 and Figure 12 shown, a protrusion 1243 is formed protruding from the front end face of the image sensor module 12. The protrusion 1243 is located on one side of the front end face of the image sensor module 12 and has an opening 1242 facing the camera 121. The cleaning agent lumen channel 1241 extends from inside the image sensor module 12 forward through the protrusion 1243 and communicates with the opening 1242 on the side of the protrusion 1243.

[0057] Further preferably, the plane where the lens of the camera 121 is located is flush with or lower than the front end face of the image sensor module 12. The protrusion 1243 protrudes 1 - 4 mm from the front end face of the image sensor 12, more preferably 2 - 3 mm, and most preferably 3 mm.

[0058] 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.

[0059] 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.

[0060] Further preferably, Figure 3 and Figure 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.

[0061] 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 .

[0062] 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.

[0063] 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 .

[0064] Further preferably, Figure 4 and Figure 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] Further preferably, Figures 5 - 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] 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.

[0073] As an optional embodiment, a separate angle adjustment lumen is provided in the jejunal nutrition tube body 11, and the front end of the angle adjustment device 13 is inserted into the angle adjustment lumen, so that the angle adjustment device 13 can be always arranged in the jejunal nutrition tube without being pulled out. Compared with the previous embodiment, in this embodiment, the angle adjustment device 13 does not occupy the jejunal nutrition tube lumen 111, and the patient can still be fed even during the intubation process.

[0074] Further preferably, Figure 9 and Figure 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.

[0075] 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.

[0076] Since the jejunal feeding tube 10 is designed to be inserted into a complex intestinal structure, the main body 11 of the jejunal feeding tube is made of a flexible material. However, the flexible material also brings other problems during catheterization. For example, the jejunal feeding tube is prone to bending and knotting. Especially in the relatively spacious part of the stomach, the jejunal feeding tube is likely to accumulate, which will cause a large bending angle of the jejunal feeding tube 10, easily resulting in blockage of each lumen inside the main body 11 of the jejunal feeding tube or reduction of the lumen inner diameter, affecting normal feeding and the normal supply or extraction of the gas passage and liquid passage, or causing problems with smooth catheterization.

[0077] Further preferably, as Figure 17 shown, in order to improve the stiffness of the jejunal feeding tube 10, a reinforcing wire 119 is provided inside the main body 11 of the jejunal feeding tube. Preferably, the reinforcing wire 119 is spiral and embedded in the inner wall of the lumen 111 of the jejunal feeding tube or the wall of the main body 11 of the jejunal feeding tube. The spiral reinforcing wire 119 can not only ensure that the jejunal feeding tube 10 has a certain stiffness, but can still be bent normally under the control of the angle adjustment device 13 according to the intestinal structure. The setting of the reinforcing wire 119 in this embodiment enables the jejunal feeding tube to have a certain stiffness to solve the above problems.

[0078] Further preferably, as Figure 11 and 12 shown, a first suction port 126 is further provided on the front end face of the image sensor module 12, and a suction channel 1261 communicating with 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 main body 11 of the jejunal feeding tube, and the suction lumen 116 communicates with 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, which is used to suck out the contents (including mucus, sputum, body fluid, gastric residues, etc.) in the intestine or stomach that adhere to or block the front end of the image sensor module 12. And in combination with the flushing of the lens of the camera 121 by the above-mentioned first nozzle 122, the first suction port 126 can simultaneously suck out the flushing contents, further ensuring the clarity of the lens of the camera 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 lens of the camera 121, and the stomach is spacious while the pylorus is narrow. During the catheterization process, it is difficult for the doctor to recognize the position of the pylorus. Therefore, the setting of the above-mentioned first suction port 126 can timely remove the gastric contents located at the front end of the jejunal feeding tube 10, which helps to recognize the position of the pylorus. Then the jejunal feeding tube 10 can smoothly enter the pylorus, thus ensuring successful catheterization and greatly shortening the catheterization time.

[0079] Further preferably, the first suction port 126 is located on the opposite side of the first nozzle 122 with respect to the camera 121. In this way, after the cleaning agent ejected from the first nozzle 122 removes the adhesions on the surface of the lens of the camera 121, both the cleaning agent and the adhesions directly enter the suction port 126 for suction, avoiding secondary adhesion to the camera 121 or adhesion in the intestine, and at the same time, avoiding blockage of the side hole 113 for feeding.

[0080] Further preferably, near the connection position of the image sensor module 12 and the jejunal feeding tube main body 11, at least one second suction port 117 is provided on the side wall of the jejunal feeding tube main body 11. The second suction port 117 communicates with the suction tube cavity 116 in the tube wall of the jejunal feeding tube main body 11. Through the suction of the suction device, the contents located on the intestinal wall or in the stomach can be further sucked out, avoiding blockage of the side hole 113 for feeding, and at the same time, the adhesions or contents not completely sucked out by the first suction port 126 can be further sucked out completely.

[0081] Further preferably, a plurality of second suction ports 117 are arranged along the longitudinal axis of the jejunal feeding tube main body 11 to increase the suction effect.

[0082] Further preferably, as Figure 9 and Figure 10 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. In this way, it can be ensured that the lumen 111 of the jejunal feeding tube communicating with the first side hole 113 and the suction tube cavity 116 communicating with the second suction port 117 extend linearly, avoiding the lumen from crossing or changing the extension direction, which is convenient for the processing and forming of the entire main body of the jejunal feeding tube 11.

[0083] Further preferably, as Figures 14 - 16 shown, the above-mentioned snake bone structure 131 is arranged in a sleeve 1311. The sleeve 1311 extends from the proximal end to the distal end and is arranged in the holding portion 1341 at the proximal end. The first pulling wire 132 and the second pulling wire 133 are arranged in the sleeve 1311.

[0084] 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 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 end of the snake bone 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.

[0085] 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 .

[0086] 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.

[0087] 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.

[0088] 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 visually adjustable 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; It also includes an angle adjustment device for adjusting the bending angle of the distal end of the jejunal nutrition tube; The angle adjustment device can be inserted into the lumen of the jejunal nutrition tube, or the front end of the angle adjustment device is arranged in a separate angle adjustment lumen of the jejunal nutrition tube; The angle adjustment device comprises 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, the snake-bone structure is arranged in a sleeve, the sleeve extends from the proximal end to the distal end, and the first traction guide wire and the second traction guide wire are arranged in the sleeve; The angle adjustment device also includes a rotation control device for controlling the snake structure to rotate. A toggle protrusion is provided on the outer surface of the rotation control device, and the rotation control device is closely matched with the proximal sleeve, so that the rotation of the rotation control device drives the sleeve and the snake structure to rotate synchronously.

2. The visually adjustable 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 visually adjustable 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 visually adjustable jejunal nutrition 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 visually adjustable jejunal nutrition tube according to claim 1, characterized in that: The image sensor module also includes at least one light source disposed at a distal end.

6. The visually adjustable jejunal feeding tube according to claim 5, 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.

7. The visually adjustable jejunal nutrition tube according to claim 1, 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.

8. The visually adjustable 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.

9. The visually adjustable jejunal feeding tube according to any one of claims 1 to 7, characterized in that: The bending angle of the snake-bone structure is 90-150 degrees.

10. The visually adjustable jejunal nutrition tube according to any one of claims 1 to 7, characterized in that: A first suction port is arranged on the front end surface of the image sensor module, a suction channel connected with the first suction port is arranged inside the image sensor module, and the suction channel is connected with a suction lumen arranged in the tube wall of the main body of the jejunal nutrition tube.

11. The visually adjustable jejunal feeding tube according to claim 10, characterized in that: The first suction port is located on an opposite side of the first nozzle relative to the camera.

12. The visually adjustable jejunal feeding tube according to claim 10, 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.

13. The visually adjustable jejunal nutrition tube according to any one of claims 1 to 7, characterized in that: The length of the image sensor module is 3-8 mm.

14. The visually adjustable jejunal nutrition 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.

15. The visually adjustable jejunal nutrition 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.

Images