Visual nutrient canal

Abstract

The utility model provides a visual nutrient canal which can solve the problems that in the prior art, the canal arrangement difficulty is large, and the success rate is poor. The visual nutrient canal comprises an endoscope which comprises an insertion part, an operation part connected with the near end of the insertion part and a camera module which is arranged at the far end of the insertion part and is in communication connection with the operation part; the catheter is used for being in clearance fit with the insertion part and comprises a free end part corresponding to the far end of the insertion part, a sleeving end part corresponding to the near end of the insertion part and a catheter body part extending from the free end part to the sleeving end part; the plugging fixing piece is used for being arranged on the insertion part in a sleeving mode, the plugging fixing piece enables the sleeving end of the catheter to be fixedly connected to the insertion part, a port gap formed between a port of the sleeving end and the insertion part is plugged, and the plugging fixing piece is used for preventing fluid in the body from flowing back along the gap between the insertion part and the catheter.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a visual feeding tube. Background Art

[0002] In recent years, enteral nutrition has received more and more attention. Its purpose is to provide basic nutritional supplements or drug treatment for patients with normal or partial gastrointestinal function who cannot eat normally orally. For example, patients with gastrointestinal obstruction, pancreatitis, etc. have slow gastrointestinal function recovery after surgery, gastrointestinal function is blocked, and they cannot eat independently, so they need to implant a jejunal nutrition tube to meet the needs of enteral nutrition support.

[0003] At present, since the placement of nasogastric tubes is mainly done by blind manual inspection by medical staff, it has high technical requirements for medical staff and it is difficult to achieve a 100% placement success rate; therefore, in order to ensure the success of the placement, some people first insert the nasogastric tube blindly, and then confirm it by irradiating the gastrointestinal part with an X-ray machine, or use X-rays to achieve visualization throughout the process, but X-rays are very harmful to the human body. In addition, for special patients who have undergone gastric surgery or patients with asymmetrical stomach shapes, visual placement of the tube is performed with the help of a gastroscope, but the direction of the head end of the nasogastric tube cannot be adjusted, and the placement of the tube is also difficult. In addition, the comfort of the gastroscope is relatively poor, which will increase the pain of the patient. Utility Model Content

[0004] The utility model aims to provide a visual nutrition tube, which can solve the problems of greater difficulty in tube placement and lower success rate in the prior art.

[0005] Based on this, the embodiment of the utility model discloses a visual feeding tube, including:

[0006] An endoscope, comprising an insertion portion, an operating portion connected to a proximal end of the insertion portion, and a camera module disposed at a distal end of the insertion portion and communicatively connected to the operating portion;

[0007] A catheter for gap-matching with an insertion portion, comprising a free end portion corresponding to a distal end of the insertion portion, a sleeve end portion corresponding to a proximal end of the insertion portion, and a tube body portion extending from the free end portion to the sleeve end portion; and

[0008] The sealing fixture is used to be sleeved on the insertion part, which fixes the sleeve end of the catheter to the insertion part and seals the port gap formed between the port of the sleeve end and the insertion part, so as to prevent the backflow of fluid in the body along the gap between the insertion part and the catheter.

[0009] The above technical solution can not only block the port gap and prevent the fluid in the body from flowing back along the gap between the insertion part and the catheter, but also relatively fix the catheter and the insertion part to ensure that the distal end of the insertion part can be stably located at the free end of the catheter, preventing the catheter from being misplaced during the process of being inserted into the body together with the insertion part of the endoscope, which is conducive to determining the exact insertion position of the catheter.

[0010] According to one embodiment of the present application, the blocking fixing member is a flexible blocking sleeve, and the flexible blocking sleeve is used to have an interference fit with the port gap so as to fix the catheter to the insertion portion while blocking the port gap.

[0011] By adopting the above technical solution, when the flexible sealing sleeve sleeved on the insertion part is squeezed into the gap between the sleeve end and the insertion part, the flexible sealing sleeve is deformed under the pressure of the inner wall of the sleeve end, and can both have an interference fit with the inner wall of the sleeve end and squeeze the insertion part inward, which can not only well seal the port gap and prevent the body fluid from flowing back along the gap between the insertion part and the catheter, but also can relatively fix the catheter and the insertion part to prevent the catheter from being misaligned when being inserted into the body together with the insertion part of the endoscope, which is conducive to determining the exact insertion position of the catheter.

[0012] According to one embodiment of the present application, the sleeve end portion has a flared structure, so that when the catheter is sleeved on the insertion portion, a flared gap is formed between the sleeve end portion and the insertion portion.

[0013] By adopting the above technical solution, since the sleeve end of the catheter has a flared structure, when the catheter is sleeved on the insertion part, a flared gap will be formed between the sleeve end and the insertion part, so that the flexible sealing sleeve sleeved on the insertion part can better squeeze into the flared gap between the sleeve end and the insertion part to improve the sealing effect.

[0014] According to one embodiment of the present application, the flexible sealing sleeve is a silicone sleeve or a rubber sleeve.

[0015] According to one embodiment of the present application, the flexible plugging sleeve includes a plugging portion and a plugging cap portion connected to the plugging portion, and the plugging portion gradually extends from the plugging cap portion to form a tapered plug.

[0016] By adopting the above technical solution, the larger end of the plugging part is connected to the plugging cap part so that the plugging part can be squeezed into the flared gap from the smaller end, so that the plugging cap part abuts against the sleeve end of the catheter to better seal the flared gap between the sleeve end and the insertion part.

[0017] According to one embodiment of the present application, the flexible sealing sleeve further includes one or more annular cones protruding from the outer peripheral surface of the plugging portion, and each annular body gradually extends toward the direction close to the plugging cap portion to form a barb structure on the outer peripheral surface of the plugging portion.

[0018] By adopting the above technical solution, when the plugging part is squeezed into the flared gap, the annular cone undergoes a significant deformation under the extrusion of the sleeve end, so as to better seal the flared gap. At the same time, the barb structure formed by the annular cone can also prevent the flexible sealing sleeve from withdrawing or falling out of the flared gap, thereby achieving a better anti-loosening and anti-falling effect, ensuring that the catheter and the insertion part are stably fixed, and facilitating the insertion of the catheter and the insertion part into the body together.

[0019] According to one embodiment of the present application, the plugging cap portion is provided with a hollow groove with a notch facing away from the plugging portion.

[0020] By adopting the above technical solution, when squeezing the plugging part into the gap, the operator can pinch the plugging cap, so that the plugging cap is deformed but not easily squeezed into the insertion part, making it convenient to insert the plugging part into the gap, thereby making the plugging part deformed when inserted into the gap to fix the catheter and the insertion part together.

[0021] According to one embodiment of the present application, a notch is formed in the plugging portion.

[0022] By adopting the above technical solution, when the plugging head is squeezed into the gap, the gap of the plugging head will be closed as much as possible under the squeezing, so that the plugging head and the insertion part are tightly attached, thereby increasing the friction between the plugging head and the insertion part, and further improving the locking effect of the flexible sealing sleeve.

[0023] According to one embodiment of the present application, the blocking fixing member is a rigid blocking cap, and two ends of the rigid blocking cap are respectively sealed and connected to the insertion portion and the sleeve end.

[0024] By adopting the above technical solution, the rigid sealing cap can also seal the port gap to prevent the body fluid from flowing back along the gap between the insertion part and the catheter, while fixing the catheter and the insertion part relatively to prevent the catheter and the insertion part of the endoscope from being misaligned during the process of being inserted into the body together.

[0025] According to one embodiment of the present application, the free end of the catheter has a closing structure; the outer diameter of the distal end of the insertion portion is larger than the minimum caliber of the free end and smaller than the maximum caliber of the free end.

[0026] By adopting the above technical solution, the distal end of the insertion part can abut against the inner wall of the free end, ensuring that the distal end of the insertion part can be stably located at the free end of the catheter. This not only ensures that the camera module located at the distal end of the insertion part can capture the target outside the free end, but also ensures that the free end of the catheter can bend together with the distal end of the insertion part to adjust the insertion direction, thereby further reducing the difficulty of catheterization and improving the success rate of catheterization.

[0027] According to one embodiment of the present application, the endoscope further includes a marking line arranged on the outer surface of the insertion portion for marking the installation position of the flexible sealing sleeve on the insertion portion to determine the position of the free end of the catheter relative to the distal end of the insertion portion.

[0028] The above technical solution is adopted to seal and fix the sleeve end at the corresponding position on the insertion part through the flexible sealing sleeve, which helps to determine the position of the free end of the catheter relative to the distal end of the insertion part.

[0029] According to one embodiment of the present application, the catheter further includes an X-ray developing line and size scale lines arranged on the tube body; the X-ray developing line extends along the length direction of the tube body; and the size scale lines are arranged along the length direction of the tube body.

[0030] The above technical solution is adopted to determine whether the position of the tube body is in a suitable position through the X-ray developing line, and to determine the insertion depth of the catheter through the size scale line.

[0031] According to one embodiment of the present application, the tube body in the catheter is integrally connected to the free end and fixedly connected to the sleeve end; the hardness of the tube body and the free end is less than the hardness of the sleeve end.

[0032] By adopting the above technical solution, the tube body and the free end can be made of the same material with lower hardness, which is convenient for bending by the inserted part to reduce the difficulty of tube placement, while the sleeve end can be made of a material with higher hardness, which is convenient for tightly squeezing the flexible sealing sleeve to better achieve sealing and fixation.

[0033] According to one embodiment of the present application, the endoscope further includes a drainage piece arranged at the distal end of the insertion part, the drainage piece includes a drainage tube body connected to the insertion part and a drainage cavity connected to the distal end of the drainage tube body; the drainage tube body has a tube inlet connected to the fluid channel of the insertion part and a tube outlet connected to the tube inlet; the drainage cavity has a lateral outlet facing the surface to be cleaned and a drainage top wall adjacent to the lateral outlet.

[0034] According to one embodiment of the present application, the tube outlet of the drainage tube body is partially located within the drainage cavity to form a first sub-outlet located outside the drainage cavity and a second sub-outlet located within the drainage cavity.

[0035] By adopting the above technical solution, when the fluid transported through the fluid channel of the insertion part enters the drainage tube body from the tube inlet, the fluid flowing out through the second sub-outlet can flow toward the surface to be cleaned under the guidance of the drainage top wall to clean the surface to be cleaned; at the same time, the fluid flowing out through the first sub-outlet can flow toward the area to be observed to clean the area to be observed. In other words, the drainage member of the present application can take into account the cleaning of the surface to be cleaned and the area to be observed through only one tube outlet, that is, it can simultaneously realize the two functions of flushing the surface to be cleaned and flushing the area to be observed, which helps to simplify the structure and process, reduce costs, and reduce size.

[0036] According to one embodiment of the present application, all the tube outlets of the drainage tube body are located within the drainage cavity; the drainage cavity further has a direct current channel, which extends axially to penetrate the drainage cavity, and the flow area of ​​the direct current channel is smaller than the flow area of ​​the tube outlet.

[0037] By adopting the above technical solution, when the fluid transported through the fluid channel of the insertion part enters the drainage tube body from the tube inlet, a part of the fluid flowing out through the tube outlet can flow toward the surface to be cleaned under the guidance of the drainage top wall to clean the surface to be cleaned; at the same time, another part of the fluid flowing out through the tube outlet can flow toward the area to be observed through the straight flow channel to clean the area to be observed. In other words, the drainage component of the present application can take into account the cleaning of the surface to be cleaned and the area to be observed through only one tube outlet, that is, it can simultaneously realize the two functions of flushing the surface to be cleaned and flushing the area to be observed, which helps to simplify the structure process, reduce costs, and reduce size. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the conventional technology, the drawings required for use in the embodiments or the conventional technology descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0039] Figure 1 A three-dimensional schematic diagram of a visual feeding tube provided in one embodiment of the present application;

[0040] Figure 2 An exploded schematic diagram of a visible feeding tube according to the above embodiment of the present application is shown;

[0041] Figure 3 A cross-sectional schematic diagram of a visual feeding tube according to the above embodiment of the present application is shown;

[0042] Figure 4 A first example of a blocking fixture in a visible feeding tube according to the above embodiment of the present application is shown;

[0043] Figure 5 A three-dimensional cross-sectional schematic diagram of the flexible occluding sleeve according to the first example of the present application is shown;

[0044] Figure 6 A three-dimensional schematic diagram of a drainage member in a visible feeding tube according to the above embodiment of the present application is shown;

[0045] Figure 7 An exploded schematic diagram of the guide member according to the above embodiment of the present application is shown;

[0046] Figure 8 An example of the flow guide according to the above embodiment of the present application is shown;

[0047] Fig. 9 A cross-sectional schematic diagram of the guide member according to the above example of the present application is shown;

[0048] Fig.10 A schematic diagram showing the state of the flow guide member according to the above example of the present application when the fluid flow rate is low;

[0049] Fig.11 A schematic diagram showing the state of the flow guide member according to the above example of the present application when the fluid flow rate is relatively high;

[0050] Fig.12 A second example of the blocking fixture in the visible feeding tube according to the above embodiment of the present application is shown;

[0051] Fig.13 A modified example of the drainage piece in the visual feeding tube according to the above embodiment of the present application is shown.

[0052] Reference numerals: 1. visual feeding tube; 10. endoscope; 11. insertion part; 110. fluid channel; 12. operation part; 13. camera module; 14. bending control mechanism; 15. marking line; 16. drainage member; 161. drainage tube body; 1611. tube inlet; 1612. tube outlet; 1601. first sub-outlet; 1602. second sub-outlet; 162. drainage cavity; 1621. lateral outlet; 1622. drainage top wall; 1623. drainage side wall; 1624. transition wall; 1625. direct current channel; 163 , installation part; 1631, window; 1632, installation cavity; 164, sleeve; 165, connecting pipe; 166, guide arm body; 167, support base; 17, fill light source; 20, catheter; 21, free end; 22, sleeve end; 220, flared gap; 23, tube body; 24, X-ray development line; 25, size scale line; 30, plugging fixture; 300, flexible plugging sleeve; 31, plugging head; 310, notch; 32, plugging cap; 320, hollow groove; 33, annular cone; 34, rigid plugging cap. DETAILED DESCRIPTION

[0053] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0054] In the description of the embodiments of the present application, it should be noted that the terms "near" and "far" are relative positional relationships. When an operator operates an instrument to process a target object, the side along the instrument close to the operator is "near" and the side close to the target object is "far".

[0055] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0056] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one feature. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0057] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0058] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0059] Considering that the existing nasogastric tubes either need to be visualized with the help of X-rays or with gastroscopes for visual placement, but X-rays are harmful to the human body, and the comfort of gastroscopes is relatively poor, which will increase the pain of patients; at the same time, the head end of the existing nasogastric tube cannot adjust the direction, and the placement of the tube is also difficult, resulting in a poor success rate of placement. In order to solve this problem, the present application provides a visual feeding tube.

[0060] Specifically, see Figures 1 to 13 One embodiment of the present application provides a visual feeding tube 1, which may include: an endoscope 10, the endoscope 10 including an insertion portion 11, an operating portion 12 connected to the proximal end of the insertion portion 11, and a camera module 13 arranged at the distal end of the insertion portion 11 and communicatively connected to the operating portion 12; a catheter 20 for gap fitting with the insertion portion 11 and a sealing fixture 30 for being sleeved on the insertion portion 11.

[0061] More specifically, if Figures 1 to 3 As shown, the catheter 20 includes a free end 21 corresponding to the distal end of the insertion portion 11, a sleeve end 22 corresponding to the proximal end of the insertion portion 11, and a tube body 23 extending from the free end 21 to the sleeve end 22; the blocking fixture 30 fixes the sleeve end 22 of the catheter 20 to the insertion portion 11, and blocks the port gap formed between the port of the sleeve end 22 and the insertion portion 11, so as to prevent the backflow of the fluid in the body along the gap between the insertion portion 11 and the catheter 20. It can be understood that, since the blocking fixture 30 of the present application can relatively fix the catheter 20 and the insertion portion 11, the visual nutrition tube 1 of the present application can ensure that the distal end of the insertion portion 11 can be stably located at the free end 21 of the catheter 20, prevent the catheter 20 from being misplaced during the process of being inserted into the body together with the insertion portion 11 of the endoscope 10, and is conducive to determining the exact insertion position of the catheter 20.

[0062] For example, in the first example of the present application, Figures 3 to 5As shown, the blocking fixture 30 can be implemented as a flexible blocking sleeve 300, which is used to have an interference fit with the port gap, so as to fix the catheter 20 to the insertion part 11 while blocking the port gap. In this way, when the flexible blocking sleeve 300 sleeved on the insertion part 11 squeezes into the gap between the sleeve end 22 and the insertion part 11, the flexible blocking sleeve 300 is deformed under the pressure of the inner wall of the sleeve end 22, and can not only have an interference fit with the inner wall of the sleeve end 22, but also can press the insertion part 11 inwardly, which can not only well block the port gap and prevent the body fluid from flowing back along the gap between the insertion part 11 and the catheter 20, but also can relatively fix the catheter 20 and the insertion part 11, and prevent the catheter 20 from being misaligned when being inserted into the body together with the insertion part 11 of the endoscope 10, which is conducive to determining the exact insertion position of the catheter 20 and facilitates successful catheterization.

[0063] Alternatively, if Figure 3 As shown, the sleeve end 22 of the catheter 20 has a flared structure, so that when the catheter 20 is sleeved on the insertion part 11, a flared gap 220 is formed between the sleeve end 22 and the insertion part 11, so that the flexible sealing sleeve 300 sleeved on the insertion part 11 can be better squeezed into the flared gap 220 between the sleeve end 22 and the insertion part 11 to improve the sealing effect.

[0064] It is worth noting that the operating unit 12 of the present application can be communicatively connected to an external display (not shown in the figure) to transmit the image information collected by the camera module 13 to the display for display to achieve visual catheterization. Alternatively, the operating unit 12 of the present application can also have a built-in display (not shown in the figure) to directly display the image information collected by the camera module 13 to achieve visual catheterization, thereby reducing the difficulty of catheterization and improving the success rate of catheterization.

[0065] It is understandable that when using the visual nutrition tube 1 of the present application, the assembled catheter 20 and the insertion part 11 of the endoscope 10 can be inserted into the body first, and the position of the catheter 20 inserted into the body can be observed by using the endoscope 10. After the catheter 20 is inserted into the appropriate position, the insertion part 11 of the endoscope 10 can be pulled out from the catheter 20, and nutrition or liquid medicine can be delivered to the catheter 20 to achieve the purpose of delivering nutrition or liquid medicine to the stomach or intestine, or the catheter 20 can be connected with other equipment to perform decompression treatment on the stomach or intestine. Of course, in other examples of the present application, when using the visual nutrition tube 1 of the present application, the target position image can be obtained by inserting the endoscope 10 into the body alone to judge the in-body conditions, and then the catheter 20 and the endoscope 10 are assembled together and inserted into the body together. After the catheter 20 is placed in the appropriate position, the insertion part 11 of the endoscope 10 is pulled out from the catheter 20, so that the catheter 20 can perform tasks such as delivering nutrition or liquid medicine to the body and exhausting gas to the outside of the body to reduce pressure.

[0066] Alternatively, if Figure 3 As shown, the free end 21 of the catheter 20 has a closing structure; the distal outer diameter D of the insertion portion 11 can be larger than the minimum diameter D1 of the free end 21, and smaller than the maximum diameter D2 of the free end 21, so that the distal end of the insertion portion 11 can abut against the inner wall of the free end 21, ensuring that the distal end of the insertion portion 11 can be stably located at the free end 21 of the catheter 20, not only can it be ensured that the camera module 13 located at the distal end of the insertion portion 11 can capture the target outside the free end 21, but also can ensure that the free end 21 of the catheter 20 can bend together with the distal end of the insertion portion 11 to adjust the insertion direction, further reducing the difficulty of catheterization and improving the success rate of catheterization.

[0067] It is worth noting that Figures 1 to 3 As shown, the operating part 12 in the endoscope 10 mentioned in the present application may be provided with a bending control mechanism 14 connected to the distal end of the insertion part 11 through a traction line (not shown in the figure), which is used to pull the traction line to control the bending of the insertion part to adjust the direction of the distal end of the insertion part, thereby driving the free end 21 of the catheter 20 to bend so as to adjust the insertion direction.

[0068] According to the above embodiments of the present application, Figure 1 and Figure 2 As shown, the flexible blocking sleeve 300 is preferably implemented as a silicone sleeve or a rubber sleeve, which can be slidably mounted on the insertion portion 11 of the endoscope 10. In this way, when the silicone sleeve is squeezed into the flared gap 220 between the sleeve end 22 of the catheter 20 and the insertion portion 11, the silicone sleeve is squeezed and deformed to fix the catheter 20 and the insertion portion 11 relatively, and at the same time, the flared gap 220 between the sleeve end 22 and the insertion portion 11 is firmly blocked to prevent the body fluid from flowing back from the gap between the catheter 20 and the insertion portion 11.

[0069] Alternatively, if Figures 3 to 5 As shown, the flexible sealing sleeve 300 may include a plugging portion 31 and a plugging cap portion 32 connected to the plugging portion 31, and the plugging portion 31 gradually extends from the plugging cap portion 32 to form a tapered plug; that is, the larger end of the plugging portion 31 is connected to the plugging cap portion 32 so as to squeeze the plugging portion 31 into the flared gap 220 from the smaller end, so that the plugging cap portion 32 abuts against the sleeve end 22 of the catheter 20 to better seal the flared gap 220 between the sleeve end 22 and the insertion portion 11.

[0070] Alternatively, if Figure 3 and Figure 4As shown, the flexible plugging sleeve 300 may further include one or more annular cones 33 protruding from the outer peripheral surface of the plugging portion 31, and each annular cone 33 gradually extends toward the direction close to the plugging cap portion 32 to form a barb structure on the outer peripheral surface of the plugging portion 31. In this way, when the plugging portion 31 is squeezed into the flared gap 220, the annular cone 33 is greatly deformed under the pressure of the sleeve end 22, so as to better seal and fix the catheter 20 and the insertion portion 11, and the barb structure formed by the annular cone 33 can also cooperate with the inner wall of the sleeve end 22, which helps to prevent the flexible plugging sleeve 300 from withdrawing or falling out from the flared gap 220, and has a better anti-loosening and anti-falling effect.

[0071] Alternatively, if Figure 4 and Figure 5 As shown, the plugging cap part 32 of the flexible plugging sleeve 300 may be provided with a hollow groove 320 with the notch facing away from the plugging part 31. In this way, when squeezing the plugging part 31 into the gap, the operator can pinch the plugging cap part 32, so that the plugging cap part 32 is deformed but not easy to squeeze the insertion part 11, which facilitates the insertion of the plugging part 31 into the gap, so that the plugging part 31 is inserted into the gap and deformed to fix the catheter 20 and the insertion part 11 together.

[0072] Alternatively, if Figure 4 and Figure 5 As shown, the plugging portion 31 of the flexible plugging sleeve 300 may be provided with a notch 310. Thus, when the plugging portion 31 is squeezed into the gap, the notch 310 of the plugging portion 31 will be closed as much as possible under the squeeze, so that the plugging portion 31 and the insertion portion 11 are closely attached, thereby increasing the friction between the plugging portion 31 and the insertion portion 11, and further improving the locking effect of the flexible plugging sleeve 300.

[0073] It is worth noting that in the second example of the present application, Fig.12 As shown, the blocking fixture 30 can also be implemented as a rigid blocking cap 34, and the two ends of the rigid blocking cap 34 are respectively sealed and connected to the insertion portion 11 and the sleeve end portion 22. In this way, the rigid blocking cap 34 can also block the port gap to prevent the body fluid from flowing back along the gap between the insertion portion 11 and the catheter 20, while fixing the catheter 20 and the insertion portion 11 relatively to prevent the catheter 20 from being misaligned when being inserted into the body together with the insertion portion 11 of the endoscope 10.

[0074] It can be understood that one end of the rigid sealing cap 34 can be fixedly connected or dynamically sealed and rotatably connected to the insertion part 11 by means of interference fit, threaded connection, adhesive connection or integral connection, and the other end of the rigid sealing cap 34 can be detachably sealedly connected to the sleeve end 22 by means of interference fit or threaded connection, so as to relatively fix the catheter 20 and the insertion part 11 while achieving the blocking of the port gap. This application will not go into details.

[0075] In addition, in order to facilitate the determination of the fixed position of the sleeve end portion 22 of the catheter 20 on the insertion portion 11 of the endoscope 10, as shown in FIG. Figure 2 As shown, the endoscope 10 of the present application may further include a marking line 15 provided on the outer surface of the insertion portion 11, for marking the position of the plugging fixture 30 on the insertion portion 11, so as to plug and fix the sleeve end 22 to the corresponding position on the insertion portion 11 through the plugging fixture 30. It can be understood that the length of the catheter 20 of the present application is less than the length of the insertion portion 11, so as to ensure that when the sleeve end 22 is sleeved and fixed to the insertion portion 11, the distal end of the insertion portion 11 can abut against the inner wall of the free end 21; for example, when the length of the insertion portion 11 is 1.6 meters, the length of the catheter 20 can be 1.4 meters.

[0076] Alternatively, if Figure 2 As shown, the catheter 20 may further include an X-ray developing line 24 disposed on the tube body 23, and the X-ray developing line 24 extends along the length direction of the tube body 23, so as to determine whether the tube body is in a suitable position through the X-ray developing line 24. It is understandable that, since the catheter 20 of the present application usually needs to be indwelled in the body for a long time, generally for a maximum of thirty days, after the catheter 20 is placed in the body, the catheter 20 of the present application can use the X-ray developing technology to develop the X-ray developing line 24, thereby displaying the position of the tube body, so as to confirm whether the tube body is still in a suitable position in the body when the catheter 20 is indwelled in the body for a long time.

[0077] In addition, in order to determine the insertion depth of the catheter 20, as Figure 2 As shown, the catheter 20 of the present application may further include dimension scale lines 25 disposed on the outer surface of the tube body 23 , and the dimension scale lines 25 are arranged along the length direction of the tube body 23 to indicate the length dimension of each section in the tube body 23 .

[0078] According to the above embodiments of the present application, Figure 3 As shown, the tube body 23 in the catheter 20 can be integrally connected with the free end 21 and fixedly connected with the sleeve end 22; the hardness of the free end 21 and the tube body 23 is less than the hardness of the sleeve end 22. In this way, the tube body 23 and the free end 21 can be made of the same material with a lower hardness, so that they can be easily bent by the insertion part 11 to reduce the difficulty of catheter placement, while the sleeve end 22 can be made of a material with a higher hardness, so that it is easy to tightly squeeze the blocking fixture 30 to better achieve blocking fixation.

[0079] Optionally, the hardness of the free end portion 21 is less than the hardness of the distal end of the insertion portion 11. It is understandable that, since the distal end of the insertion portion 11 with greater hardness is located within the free end portion 21 with less hardness, when the distal end of the insertion portion 11 is controlled to bend to change direction, the free end portion 21 with less hardness can also change direction driven by the distal end of the insertion portion 11, which is conducive to catheter placement.

[0080] It is worth noting that since the camera module 13 in the endoscope 10 needs to operate in a dark environment inside the body, the camera module 13 needs fill light to normally acquire the target image. To solve this problem, the endoscope 10 of the present application can be provided with a light source such as an LED at the far end of the insertion portion 11 for fill light, or a fill light can be built into the camera module 13, or an optical fiber that runs through the insertion portion 11 can be used to transmit light for fill light, which will not be described in detail in the present application.

[0081] In addition, if Figure 3 As shown, the insertion portion 11 of the endoscope 10 generally has a fluid channel 110 for conveying fluid, in order to clean the surface to be cleaned and the area to be observed by means of the fluid conveyed through the fluid channel 110, as shown in FIG. Figures 6 to 9 As shown, the endoscope 10 of the present application may further include a drainage member 16 disposed at the distal end of the insertion portion 11, and the drainage member 16 may include a drainage tube body 161 connected to the insertion portion 11 and a drainage cavity 162 connected to the distal end of the drainage tube body 161. The drainage tube body 161 has a tube inlet 1611 connected to the fluid channel 110 of the insertion portion 11 and a tube outlet 1612 connected to the tube inlet 1611. The drainage cavity 162 has a lateral outlet 1621 facing the surface to be cleaned and a drainage top wall 1622 adjacent to the lateral outlet 1621.

[0082] For example, in one example of the present application, Figure 8 and Fig. 9 As shown, the tube outlet 1612 of the drainage tube body 161 is partially located inside the drainage cavity 162 to form a first sub-outlet 1601 located outside the drainage cavity 162 and a second sub-outlet 1602 located inside the drainage cavity 162 .

[0083] Alternatively, if Fig. 9 As shown, the guide top wall 1622 is a plane extending toward the lateral outlet 1621, and is used to guide the fluid flowing out through the second sub-outlet 1602 to flow toward the surface to be cleaned.

[0084] It is worth noting that when the fluid transported through the fluid channel 110 of the insertion part 11 enters the drainage tube body 161 from the tube inlet 1611, the fluid flowing out through the second sub-outlet 1602 can flow toward the surface to be cleaned under the guidance of the drainage top wall 1622 to clean the surface to be cleaned; at the same time, the fluid flowing out through the first sub-outlet 1601 can flow toward the area to be observed to clean the area to be observed. In other words, the drainage member 16 of the present application can take into account the cleaning of the surface to be cleaned and the area to be observed through only one tube outlet 1612, that is, it can simultaneously realize the two functions of flushing the surface to be cleaned and flushing the area to be observed, which helps to simplify the structural process, reduce costs, and reduce size. It can be understood that the surface to be cleaned mentioned in the present application can be the distal surface of the insertion part 11, or it can be the distal surface of the mounting part for mounting a lens or a light source; the area to be observed mentioned in the present application refers to tissues such as the gastrointestinal wall.

[0085] Alternatively, if Figures 8 to 11 As shown, the drainage top wall 1622 of the drainage cavity 162 can be parallel to the surface to be cleaned. Of course, in other examples of the present application, the drainage top wall 1622 of the drainage cavity 162 can also extend obliquely to approach the surface to be cleaned, reducing the impact of the direct flushing fluid on the side flushing fluid, ensuring that the fluid flowing out through the second sub-outlet 1602 flows toward the surface to be cleaned when it flows out from the side outlet 1621 under the guidance of the drainage top wall 1622.

[0086] Alternatively, if Fig. 9 As shown, the drainage cavity 162 further has a drainage side wall 1623 adjacent to the drainage tube body 161 and a transition wall surface 1624 extending curvedly from the drainage side wall 1623 to the drainage top wall 1622 , so as to better guide the fluid flowing out through the second sub-outlet 1602 to turn.

[0087] It is worth noting that the surface to be cleaned W mentioned in the present application can be made of a non-hydrophobic material to provide adhesion for the fluid flowing toward the surface to be cleaned W, so that the fluid can converge on the surface to be cleaned W. In this way, under the action of the surface tension of the fluid: Fig.10 As shown, when the flow rate of the fluid delivered through the fluid channel 110 is low, the fluid flowing out through the first sub-outlet 1601 and the second sub-outlet 1602 cannot flush out the fluid gathered on the surface to be cleaned W, so as to be attached to the surface to be cleaned W and gathered, and after being gathered to a certain extent, part of the gathered fluid will overflow from the surface to be cleaned W to achieve cleaning of the surface to be cleaned W; Fig.11As shown, when the flow rate of the fluid delivered through the fluid channel 110 is relatively high, part of the fluid flowing out through the first sub-outlet 1601 can flush out the fluid gathered on the surface to be cleaned W to flow to the area to be observed, and after the fluid gathered on the surface to be cleaned W reaches a certain level, part of the fluid flowing out through the first sub-outlet 1601 will carry part of the gathered fluid away from the surface to be cleaned W to rush to the area to be observed when flushing out the gathered fluid, thereby achieving simultaneous cleaning of the surface to be cleaned W and the area to be observed. It is understandable that the fluid mentioned in the present application is generally implemented as physiological saline.

[0088] According to the above embodiments of the present application, Figures 6 to 9 As shown, the drainage member 16 may further include a mounting portion 163, which is connected to the drainage tube body 161 to provide a surface to be cleaned through the distal end surface of the mounting portion 163. In this way, the drainage member 16 can be connected to the insertion portion 11 at the same time through the cooperation between the drainage tube body 161 and the mounting portion 163, so that the drainage member 16 can be reliably mounted on the distal end of the insertion portion 11.

[0089] Alternatively, if Figure 6 and Figure 7 As shown, the mounting portion 163 of the present application can be used to mount the camera module 13 and / or the light source, and the distal end surface of the mounting portion 163 can have a window 1631 corresponding to the camera module 13 and / or the light source, so that the camera module 13 and / or the light source can receive or reflect light through the window 1631. It can be understood that the window 1631 of the present application can be, but is not limited to, made of a light-transmitting material.

[0090] Optionally, the mounting portion 163 is made of a non-hydrophobic material to ensure that the surface to be cleaned is a non-hydrophobic surface so as to gather the fluid. In addition, the distal end surface of the mounting portion 163 has a hydrophobic window 1631; that is, the window 1631 of the mounting portion 163 is hydrophobic to prevent the fluid from adhering to the window 1631 and affecting the light transmission while cleaning the lens.

[0091] Optionally, the non-hydrophobic material mentioned in the present application may include, but is not limited to, one or more of polycarbonate PC, acrylonitrile butadiene styrene ABS, polyphenylene sulfide PPS, polypropylene PP, high-density polyethylene HDPE and polyethylene terephthalate PET.

[0092] Alternatively, if Figure 6 and Figure 7 As shown, the mounting portion 163 may further have a mounting cavity 1632 for mounting the camera module 13 , and the window 1631 is located at the far end of the mounting cavity 1632 , so that the target light can pass through the window 1631 and be received by the camera module 13 mounted in the mounting cavity 1632 for imaging.

[0093] It is worth noting that Figure 8 and Fig. 9 As shown, the drainage cavity 162 and the mounting portion 163 can be integrally connected to the drainage tube body 161, so that the drainage member 16 has an integrally formed structure. In this way, the drainage member 16 of the present application realizes an integrated design of the lens seat (i.e., the mounting portion 163) and the flushing structure (i.e., the drainage tube body 161 and the drainage cavity 162), so that the lateral outlet 1621 of the drainage cavity 162 can always face the window 1631 of the mounting portion 163, so that the drainage member 16 only needs to be installed to the distal end of the insertion portion 11, and the window 1631 can be directionally flushed with the fluid transported through the fluid channel 110 of the insertion portion 11.

[0094] In addition, if Figure 6 and Figure 7 As shown, the drainage member 16 may further include a sleeve 164 and a connecting tube 165; the distal end of the sleeve 164 is sleeved on the drainage tube body 161 and the proximal end of the mounting portion 163, and the proximal end of the sleeve 164 is used to sleeve the distal end of the insertion portion 11 to install the drainage member 16 at the distal end of the insertion portion 11; the distal end of the connecting tube 165 is connected to the tube inlet 1611 of the drainage tube body 161, and the proximal end of the connecting tube 165 is used to connect to the fluid channel 110 of the insertion portion 11 to connect the drainage tube body 161 to the fluid channel 110 of the insertion portion 11; the camera module 13 is installed on the mounting portion 163.

[0095] Alternatively, if Figure 7 and Figure 8 As shown, the drainage member 16 may further include a guide arm 166, which extends integrally from the proximal end of the drainage tube body 161 and is used to guide the proximal end of the connecting tube 165 to be inserted into the fluid channel 110 of the insertion portion 11. In other words, the guide arm 166 extends integrally from the proximal end of the drainage tube body 161 and is used to guide the two ends of the connecting tube 165 to be inserted into the fluid channel 110 and the tube inlet 1611, respectively. At the same time, the guide arm 166 also helps to determine the installation position of the drainage tube body 161 on the insertion portion 11, so as to cooperate with the sleeve 164 to stably install the drainage member 16 at the distal end of the insertion portion 11.

[0096] According to the above embodiments of the present application, Figure 6 and Figure 7As shown, the distal end of the sleeve 164 can be interference-fitted on the drainage tube body 161 and the mounting portion 163, and the proximal end of the sleeve 164 can be interference-fitted on the outer peripheral wall of the insertion portion 11; the guide arm body 166 is located between the outer wall of the connecting tube 165 and the inner wall of the sleeve 164, so as to guide the distal end and the proximal end of the connecting tube 165 to be respectively plugged into the tube inlet 1611 of the drainage tube body 161 and the fluid channel 110 of the insertion portion 11. It can be understood that in other examples of the present application, the sleeve 164 can also be fixedly connected by bonding or ultrasonic welding to install the drainage member 16 to the distal end of the insertion portion 11. In addition, the drainage tube body 161 of the present application and the mounting portion 163 are integrally formed into a cylindrical structure so as to be reliably interference-fitted with the sleeve 164.

[0097] Alternatively, if Figure 7 As shown, the guide member 16 may further include a support base 167 , which is disposed within the sleeve 164 to support the camera module 13 so that the camera module 13 is stably maintained in the mounting cavity 1632 of the mounting portion 163 .

[0098] It is worth noting that Figure 7 As shown, the support base 167 of the present application may also be provided with a fill light source 17 corresponding to the camera module 13, for filling light for the camera module 13. It is understandable that the fill light source 17 mentioned in the present application may be, but is not limited to, implemented as an LED lamp.

[0099] In addition, if Figures 8 to 11 As shown, the first sub-outlet 1601 of the present application is located between the second sub-outlet 1602 and the surface to be cleaned, that is, the first sub-outlet 1601 is close to the surface to be cleaned, while the second sub-outlet 1602 is far away from the surface to be cleaned, resulting in the fluid flowing out through the second sub-outlet 1602 being easily mixed or collided with the fluid flowing out through the first sub-outlet 1601 and affecting each other during the process of turning in the drainage cavity 162 to flow toward the surface to be cleaned. In order to solve this problem, in other examples of the present application, the drainage member 16 may further include a diverter, which is connected to the drainage cavity 162, so that the mutual influence between the fluid washing the surface to be cleaned and the fluid washing the area to be observed is reduced, so as to better achieve the effect of washing the area to be observed and the lens at the same time. For example, the diversion portion in the guide member 16 may be but is not limited to including a diversion plate (not shown in the figure) located within the guide cavity 162, which is used to separate the areas corresponding to the first sub-outlet 1601 and the second sub-outlet 1602, so that the fluid flowing out through the second sub-outlet 1602 is separated from the fluid flowing out through the first sub-outlet 1601, thereby reducing the mutual influence between the two. This application will not go into details.

[0100] It is worth mentioning that Fig.13A modified implementation of the drainage member 16 according to the above embodiment of the present application is shown, the difference being that: the tube outlet 1612 of the drainage tube body 161 is entirely located within the drainage cavity 162; the drainage cavity 162 further has a direct current channel 1625, the direct current channel 1625 extends axially to penetrate the drainage cavity 162, and the flow area of ​​the direct current channel 1625 is smaller than the flow area of ​​the tube outlet 1612. In this way, when the fluid transported through the fluid channel 110 of the insertion portion 11 enters the drainage tube body 161 from the tube inlet 1611, a portion of the fluid flowing out through the tube outlet 1612 can flow toward the surface to be cleaned under the guidance of the drainage top wall 1622 to clean the surface to be cleaned; at the same time, another portion of the fluid flowing out through the tube outlet 1612 can flow toward the area to be observed through the direct current channel 1625 to clean the area to be observed. In other words, in this modified embodiment of the present application, the drainage member 16 can also take into account the cleaning of the surface to be cleaned and the area to be observed through only one tube outlet, that is, it can simultaneously realize the two functions of flushing the surface to be cleaned and flushing the area to be observed, which helps to simplify the structural process, reduce costs, and reduce size.

[0101] The technical features of the above embodiments can be combined without changing the basic principle of the present invention. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0102] The above embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application.

Claims

1. Visual nutrition tube, characterized in that: include: An endoscope comprising an insertion portion, an operating portion connected to a proximal end of the insertion portion, and a camera module disposed at a distal end of the insertion portion and communicatively connected to the operating portion; A catheter for clearance fit with the insertion portion, comprising a free end portion corresponding to the distal end of the insertion portion, a sleeve end portion corresponding to the proximal end of the insertion portion, and a tube body portion extending from the free end portion to the sleeve end portion; as well as A blocking fixture is used to be sleeved on the insertion part, the blocking fixture fixes the sleeve end of the catheter to the insertion part, and blocks the port gap formed between the port of the sleeve end and the insertion part, so as to prevent the fluid in the body from flowing back along the gap between the insertion part and the catheter.

2. The visual feeding tube according to claim 1, characterized in that: The blocking fixing member is a flexible blocking sleeve, which is used for interference fit with the port gap to fix the catheter to the insertion part while blocking the port gap.

3. The visual feeding tube according to claim 2, characterized in that: The sleeve end portion has a flared structure so that when the catheter is sleeved on the insertion portion, a flared gap is formed between the sleeve end portion and the insertion portion.

4. The visual feeding tube according to claim 2, characterized in that: The flexible sealing sleeve is a silicone sleeve or a rubber sleeve; The flexible plugging sleeve includes a plugging portion and a plugging cap portion connected to the plugging portion, wherein the plugging portion gradually extends from the plugging cap portion to form a tapered plug; The flexible plugging sleeve further comprises one or more annular frustums protruding from the outer peripheral surface of the plugging portion, each of the annular frustums gradually extending toward the plugging cap portion to form a barb structure on the outer peripheral surface of the plugging portion; The plugging cap portion is provided with a hollow groove with a notch facing away from the plugging portion; The plugging portion is provided with a notch.

5. The visual feeding tube according to claim 1, characterized in that: The blocking fixing member is a rigid blocking cap, and both ends of the rigid blocking cap are sealedly connected to the insertion portion and the sleeve end portion respectively.

6. The visual feeding tube according to any one of claims 1 to 5, characterized in that: The free end of the catheter has a closing structure; the outer diameter of the distal end of the insertion portion is larger than the minimum diameter of the free end and smaller than the maximum diameter of the free end.

7. The visual feeding tube according to any one of claims 1 to 5, characterized in that: The endoscope further comprises a marking line provided on the outer surface of the insertion portion, for marking the position of the occluding fixture on the insertion portion, so as to determine the position of the free end of the catheter relative to the distal end of the insertion portion; The catheter further includes an X-ray developing line and a size scale line provided on the tube body; the X-ray developing line extends along the length direction of the tube body; and the size scale line is arranged along the length direction of the tube body.

8. The visual feeding tube according to any one of claims 1 to 5, characterized in that: The tube body portion in the catheter is integrally connected to the free end portion and fixedly connected to the sleeve end portion; the hardness of the tube body portion and the free end portion is smaller than the hardness of the sleeve end portion.

9. The visual feeding tube according to any one of claims 1 to 5, characterized in that: The endoscope further includes a drainage piece arranged at the distal end of the insertion part, the drainage piece including a drainage tube body connected to the insertion part and a drainage cavity connected to the distal end of the drainage tube body; the drainage tube body has a tube inlet connected to the fluid channel of the insertion part and a tube outlet connected to the tube inlet, and the drainage cavity has a lateral outlet facing the surface to be cleaned and a drainage top wall adjacent to the lateral outlet.

10. The visual feeding tube according to claim 9, characterized in that: The tube outlet of the drainage tube body is partially located within the drainage cavity to form a first sub-outlet located outside the drainage cavity and a second sub-outlet located within the drainage cavity.

11. The visual feeding tube according to claim 9, characterized in that: The outlets of the drainage tube body are all located within the drainage cavity; the drainage cavity further has a direct current channel, which extends axially to pass through the drainage cavity, and the flow area of ​​the direct current channel is smaller than the flow area of ​​the tube outlet.

Images