Nasal gastrointestinal cannula capable of positioning in minimally invasive surgery

Abstract

The utility model provides an alimentary canal nasal gastrointestinal intubation capable of realizing positioning in a minimally invasive surgery. The alimentary canal nasal gastrointestinal intubation is characterized by comprising a nasal gastrointestinal intubation body and a positioning mechanism, the positioning mechanism penetrates through the length of the whole nasal gastrointestinal cannula body and is provided with a plurality of light-emitting components; and the light-emitting components are arranged at intervals or positions of specific distances and are used for positioning the whole or local part of the nasal gastrointestinal intubation tube body. Therefore, intubation can be completed quickly and accurately.

Description

Technical Field

[0001] This utility model relates to medical auxiliary devices, specifically, to a transnasal gastrointestinal tube that can be positioned during minimally invasive surgery. Background Technology

[0002] Patients who are unable to eat independently immediately after surgery, or those who are unconscious, often require nasogastric tube insertion. However, in current clinical practice, open-chest surgeries allow surgeons to directly judge the direction of tube insertion by touch. But considering postoperative healing speed and the infection risks of open surgery, current clinical practice tends to favor minimally invasive surgical approaches. However, when minimally invasive surgery necessitates tube insertion, the process becomes extremely difficult due to the very small surgical window. Figure 1 The catheter must pass through the cardia and pylorus to reach the target location. In minimally invasive surgery, doctors cannot determine the direction of the catheter by touch. Therefore, the placement process often tests the doctor's personal experience and ability, which can waste a lot of surgical time and increase the difficulty of the surgery.

[0003] In addition, in some dual-channel intubation procedures, the intestinal cannula segment (black) needs to be as follows: Figure 2 The tube must pass through both the cardia and pylorus to reach the target location. The gastric tube segment (dark gray) must be positioned precisely between the cardia and pylorus, and the closer to the pylorus, the better. In minimally invasive procedures, doctors cannot determine the direction of the intestinal tube segment (especially the fluid outflow point) and the location of the port by touch, nor can they determine whether the gastric tube segment has reached the appropriate position between the cardia and pylorus. Therefore, the placement of this type of tube requires greater personal experience and ability from the doctor, as it necessitates judging the position of both types of tubes. This can lead to a significant waste of surgical time and increase the difficulty of the procedure. Utility Model Content

[0004] The present invention aims to overcome the above-mentioned defects and provide a solution with simple structure, high integration of accessories, convenient operation, and can be applied to minimally invasive surgery to quickly realize transnasal gastrointestinal intubation.

[0005] This utility model provides a gastrointestinal nasogastric tube that can be positioned during minimally invasive surgery, characterized in that:

[0006] It includes a nasogastric tube body and a positioning mechanism;

[0007] The aforementioned positioning mechanism extends the entire length of the nasogastric tube and has multiple light-emitting components.

[0008] The aforementioned light-emitting components are set at specific intervals or positions to position the entire or partial portion of the nasogastric tube body.

[0009] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0010] The aforementioned nasogastric tube body has a fluid inlet and an outlet.

[0011] The aforementioned input end is equipped with a connector for connecting to a fluid input device;

[0012] The above-mentioned output end has a sealed end structure, and the proximal end of the sealed end has a liquid outlet hole.

[0013] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0014] The aforementioned light-emitting component points to the location of the liquid outlet.

[0015] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0016] The aforementioned nasogastric tube body has a pre-embedded groove;

[0017] The aforementioned positioning mechanism is embedded in a pre-embedded groove.

[0018] or

[0019] The aforementioned nasogastric tube body has a double-layer structure, comprising a nested inner tube and an outer tube;

[0020] The aforementioned inner tube can accommodate the passage of a guide wire;

[0021] The aforementioned positioning mechanism is located between the inner tube and the outer tube.

[0022] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0023] The aforementioned nasogastric tube body includes a nasogastric segment tube and a nasointestinal segment tube;

[0024] The rear ends of the aforementioned nasogastric segment cannula and nasointestinal segment cannula constitute a double-chamber design at the rear end of the nasogastric and intestinal cannula body.

[0025] The aforementioned nasoenteric segment cannula is later transformed into a single tube shape at the front end of the nasogastric and intestinal cannula body.

[0026] The aforementioned positioning mechanism extends the entire length of the nasogastric tube and has multiple light-emitting components.

[0027] The aforementioned light-emitting components are set at specific intervals or positions to locate the entire or partial portion of the nasoenteric segment cannula, and to differentiate the location of the nasogastric segment cannula.

[0028] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0029] The above-mentioned nasoenteric cannula has an intestinal fluid inlet and an intestinal fluid outlet.

[0030] The aforementioned intestinal fluid input end is equipped with a connector for connecting to the intestinal fluid input device;

[0031] The above-mentioned intestinal fluid output end is a sealed structure, and the proximal end of the sealed end has an intestinal fluid outlet hole;

[0032] The above-mentioned nasogastric cannula has a gastric fluid inlet and a gastric fluid outlet.

[0033] The aforementioned gastric fluid input end is equipped with a connector for connecting to a gastric fluid input device;

[0034] The above-mentioned gastric fluid output end is a sealed structure, and the proximal end of the sealed end has a gastric fluid outlet hole.

[0035] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0036] The aforementioned light-emitting component points to the location of the intestinal fluid outlet hole;

[0037] and

[0038] The aforementioned light-emitting component also points to the location of the gastric fluid outlet and provides an indication that distinguishes it from the fluid outlet of the nasoenteric cannula or the intestinal fluid outlet.

[0039] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0040] The aforementioned nasogastric tube body has a pre-embedded groove;

[0041] The aforementioned positioning mechanism is embedded in a pre-embedded groove.

[0042] or

[0043] The aforementioned nasogastric tube body has a double-layer structure, comprising a nested inner tube and an outer tube;

[0044] The aforementioned positioning mechanism is located between the inner tube and the outer tube.

[0045] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0046] The aforementioned positioning mechanism is detachably connected to the nasogastric tube body.

[0047] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0048] The aforementioned light-emitting components include light-emitting elements of different colors;

[0049] The light-emitting elements of different colors are respectively set at different positions on the nasogastric tube body, or indicate a specific position, or indicate a specific length range.

[0050] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0051] Light-emitting components are arranged around the aforementioned liquid outlet holes;

[0052] or

[0053] The aforementioned nasogastric tube body has a light-emitting component located opposite the fluid outlet.

[0054] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0055] The inner surface of the sealing end of the aforementioned nasogastric tube body has a detachable structure;

[0056] The aforementioned light-emitting components and end caps are connected by a detachable structure.

[0057] Furthermore, the present invention provides a nasogastric tube for gastrointestinal tract that can be positioned during minimally invasive surgery, characterized in that:

[0058] The external viewing surface of the aforementioned nasogastric tube body is marked with graduations. Attached Figure Description

[0059] Figure 1 1. Detailed route diagram for nasogastric tube insertion; 1A is the single-tube mode, 1B is the double-tube mode;

[0060] Figure 2 This embodiment provides a schematic diagram of a transnasal gastrointestinal cannula structure that can be positioned during minimally invasive surgery;

[0061] Figure 3 This embodiment provides a cross-sectional schematic diagram of a transnasal gastrointestinal cannula that can be positioned during minimally invasive surgery;

[0062] Figure 4 This embodiment provides a schematic diagram of a double-layer structure for a transnasal gastrointestinal cannula that can be positioned during minimally invasive surgery;

[0063] Figure 5 This embodiment provides a schematic diagram of the dislodgement structure of a transnasal gastrointestinal cannula that can be positioned during minimally invasive surgery;

[0064] Figure 6 This embodiment provides a schematic diagram of the arrangement of light-emitting components for a transnasal gastrointestinal cannula that can be positioned during minimally invasive surgery;

[0065] Figure 7 This embodiment provides a schematic diagram of a dual-tube nasogastric tube for gastrointestinal insertion that can be positioned during minimally invasive surgery;

[0066] Figure 8 This embodiment provides a schematic diagram of the arrangement of light-emitting components for another type of dual-tube nasogastric tube for positioning in minimally invasive surgery.

[0067] Figure 9 This embodiment provides a cross-sectional schematic diagram of a dual-tube nasogastric tube for gastrointestinal insertion that can be positioned during minimally invasive surgery;

[0068] Figure 10 This embodiment provides a schematic diagram of the double-layer structure of a dual-tube nasogastric tube for gastrointestinal insertion that can be positioned in minimally invasive surgery;

[0069] Figure 11 This embodiment provides a schematic diagram of the dislodgement structure of a dual-tube nasogastric tube for the digestive tract that can be positioned during minimally invasive surgery;

[0070] Figure 12 This embodiment provides a schematic diagram of the arrangement of light-emitting components for a dual-tube nasogastric tube for gastrointestinal insertion that can be positioned in minimally invasive surgery; Detailed Implementation

[0071] This invention can be implemented in many ways and has various embodiments, therefore specific embodiments are illustrated and described in the accompanying drawings. However, this is not intended to limit the invention to specific implementations, but should be understood to include all modifications, equivalents, and even substitutions that fall within the spirit and technical scope of this invention.

[0072] Example 1

[0073] like Figure 2 As shown, this embodiment provides a nasogastric tube that can be positioned in minimally invasive surgery, which includes a nasogastric tube body 100 and a positioning mechanism 200.

[0074] The nasogastric tube body 100 has an appearance similar to that of a traditional nasogastric tube, that is, it has a fluid inlet end and an outlet end;

[0075] The input end, located outside the nasal cavity after the tube is inserted, is equipped with a connector that connects to the fluid input device 110.

[0076] The output end is a sealed structure 120, and the proximal end of the sealed end has a liquid outlet 121, so that when the tube is inserted, nutrients and other life support substances flow into the intestine through the liquid outlet.

[0077] The positioning mechanism 200 extends the entire length of the nasogastric tube body and has a plurality of light-emitting components 210.

[0078] The light-emitting component 210 is set at specific intervals or positions to position the entire or partial body of the nasogastric tube.

[0079] This specific distance refers to the distance specified at the beginning of the design. For example, there is a light-emitting point every 5cm. This allows the depth of the tube to be determined by counting the number of light-emitting points passing through the observation port.

[0080] This specific location can be the terminal (i.e., the deepest end of the display tube after it enters the body) or the outlet (i.e., the location of the outlet, thus ensuring that the outlet is located in the target intestine). The arrangement of the light-emitting points at the outlet location can be around the outlet, near the outlet, or on the inner wall of the tube opposite the outlet.

[0081] The following are some possible methods for fixing the positioning mechanism 200 and the nasogastric tube body 100 together:

[0082] Option 1, such as Figure 2 As shown, the positioning mechanism 200 is in the shape of a beam or linear LED, with one end fixed to the end cap, and extends along the inner wall of the entire length of the nasogastric tube body to the outlet end.

[0083] Option 2, such as Figure 3 As shown, the nasogastric tube body 100 has a pre-embedded groove 101, which is C-shaped, so as to lock the positioning mechanism 200 implanted therein.

[0084] The positioning mechanism 200 is in the shape of a beam or line LED, and it is embedded in the pre-embedded groove 101 by pre-embedding.

[0085] After the positioning mechanism is installed, the transverse opening of the groove can be sealed by heat shrinking, sealing or other methods, or it can be left unsealed. Since the medical beams and other components that can be used in this device are low-voltage and low-current components, and the tube placement time is extremely short, the power is cut off as soon as the tube placement is completed, and there is no risk of burns to the human body.

[0086] Option 3, such as Figure 4 As shown, the nasogastric tube body 100 has a double-layer structure, including an inner tube 100A and an outer tube 100B nested together. The inner tube 100A and the outer tube 100B need to reserve the position of the outlet hole 121, that is, the outlet hole 121 is connected to the inner tube but not to the outer tube, so that the space between the inner and outer tubes is a space that has no interaction with liquids or body fluids.

[0087] The inner tube 100A can accommodate the passage of a guidewire;

[0088] The positioning mechanism 200 is located between the inner and outer tubes, which isolates the electrical equipment from contact with the fluid or body fluid, thus avoiding the influence of even a small current.

[0089] Regarding positioning mechanisms, in addition to fixed installation methods (i.e., traditional fixing methods such as thermoplastic, one-piece molding, bonding, and binding), they can also be detachable (i.e., detachable) structures.

[0090] For example Figure 5 As shown, the inner surface of the sealing end of the nasogastric tube body has a deformable hook 122;

[0091] The positioning mechanism has a ring 220 at the corresponding position of the deformable hook. The two are connected by hooking the ring 220 with the hook 122. When the tube is placed and no light-emitting element is needed, the hook can be deformed directly by pulling with external force and the ring can be detached.

[0092] Regarding the light-emitting components, they include light-emitting elements with different colors of light;

[0093] Different colored light-emitting elements are respectively set at different positions on the nasogastric tube body, or to indicate a specific position or a specific length range.

[0094] This embodiment indicates that the specific location is the liquid outlet, such as... Figure 6 As shown, by arranging a ring of light-emitting components 201 that are different from other colors around the liquid outlet, the position of the liquid outlet is indicated, so as to know more clearly whether the liquid outlet has passed through the stomach and entered the intestine.

[0095] In this embodiment, it is suggested that the specific length range is represented by different light colors corresponding to different tube depths, such as blue for 0-10cm, red for 10-15cm, yellow for 15-20cm, and green for 20-25cm, or alternating colors. This makes it easier to determine the depth of the tube and to make simple measurements of the internal environment.

[0096] In addition, the external viewing surface of the nasogastric tube body may also be provided with graduations to determine the total depth of the tube body.

[0097] Using this product, a miniature probe can be inserted through the minimally invasive incision to monitor the entire catheter placement process during minimally invasive surgery. Because the catheter in this embodiment has a light-emitting feature, the displacement of the light spot can guide the operator at the remote end to adjust the position and direction during the operation.

[0098] Example 2

[0099] like Figure 7 As shown, this embodiment provides a dual-tube nasogastric tube for gastrointestinal tract that can be positioned in minimally invasive surgery, comprising a nasogastric tube body 100 and a positioning mechanism 200.

[0100] The aforementioned nasogastric and intestinal cannula 100 includes a nasogastric segment cannula 102 and a nasointestinal segment cannula 101.

[0101] The rear end of the nasogastric segment 102 and the rear end of the nasoenteric segment 101 (the rear end here refers to the end that is close to or located outside the nasal cavity after the tube is inserted, i.e., the fluid inlet end) constitute a double-chamber shape at the rear end of the nasogastric segment 102 and the nasoenteric segment 101. That is, the rear ends of the nasogastric segment 102 and the nasoenteric segment 101 are connected in whole or in part. In actual operation, since different nutrient solutions need to be connected, the general structure is as shown in the figure, with the mouth slightly separated and the lower part glued together.

[0102] The front end of the nasoenteric segment cannula 101 constitutes the front end of the nasogastric cannula body (the front end here refers to the end located in the intestine after the cannula is inserted, i.e., the intestinal liquid output end), which is a single tube design.

[0103] The nasoenteric segment cannula 101 has an intestinal segment fluid inlet 101A and an intestinal segment fluid outlet 101B;

[0104] The intestinal fluid inlet 101A is equipped with a connector 101A1, which connects to the intestinal fluid inlet device, so that when the tube is inserted, nutrients and other life support substances flow into the intestine from the outlet.

[0105] The fluid output end 101B of this intestinal segment is a sealed structure, and the proximal end of the sealed end has an intestinal segment fluid outlet hole 101B1.

[0106] The nasogastric segment cannula 102 has a gastric segment fluid inlet 102A and a gastric segment fluid outlet 102B;

[0107] The gastric fluid inlet 102A is equipped with a connector 102A1, which connects to the gastric fluid inlet device, so that when the tube is inserted, life support substances such as nutrients flow into the stomach from the outlet.

[0108] The gastric fluid output end 102B is a sealed structure, and the proximal end of the sealed end has a gastric fluid outlet hole 102B1.

[0109] The aforementioned positioning mechanism 200 extends the entire length of the nasogastric tube body and has a plurality of light-emitting components.

[0110] The light-emitting component is set at specific intervals or positions to locate the entire or partial nasoenteric segment cannula 101 and to differentiate the location of the nasogastric segment cannula 102.

[0111] This specific distance refers to the distance specified at the initial design stage. For example, a light-emitting point is placed every 5 cm, allowing the depth of the tube insertion to be determined by counting the number of light-emitting points passing through the observation port. Different colors are generally used to mark the gastric tube and intestinal tube segments, enabling differentiated display between the two segments.

[0112] This specific location can be the end of the gastric tube segment (i.e., showing the deepest part of the stomach that the tube can reach after entering the body), the end of the intestinal tube segment (i.e., showing the deepest part of the intestine that the tube can reach after entering the body), and separate markings for the two outlet holes (i.e., showing the location of the outlet hole to ensure that the outlet hole is located in the target stomach or intestine). The arrangement of the light-emitting points for the outlet hole location can be around the outlet hole, near the outlet hole, or on the inner wall of the tube opposite the outlet hole.

[0113] The following are some possible methods for fixing the positioning mechanism 200 and the nasogastric tube body 100 together:

[0114] Option 1, such as Figure 8 As shown, the positioning mechanism 200 is in the shape of a beam or a linear LED. One end of it is fixed to the end of the intestinal segment. It extends along the inner wall of the entire length of the nasogastric tube body to the outlet end. The light color of the light source 212 to the left of the outlet position is different from the light color between the light source 212 and the light source 222, thereby realizing the distinction between the two segments.

[0115] During clinical trials using the aforementioned tubes, it was found that although the tubes could roughly determine the endpoints of the gastric and intestinal segments, there was a certain distance between the liquid outlet of the gastric tube and the end of the gastric tube (and the distance varied depending on the model). The above solution could only ensure that the end of the tube entered the stomach, but could not ensure that the liquid outlet of the gastric tube segment also entered the stomach. The same problem occurred in the intestinal segment. To solve this problem, in another solution of this embodiment, light source 211 and light source 221 were set with different colors to ensure the positioning of the liquid outlet during the insertion process.

[0116] Option 2, such as Figure 8 As shown, the solution differs from the first solution in that it has separate light-emitting components for the gastric tube segment and the intestinal tube segment.

[0117] Option 3, such as Figure 9 As shown, the solution that differs from the above solution is that the nasogastric tube body 100 has a pre-embedded groove 101, which is C-shaped, so as to lock the positioning mechanism 200 implanted therein.

[0118] The positioning mechanism 200 is in the shape of a beam or line LED, and it is embedded in the pre-embedded groove 101 by pre-embedding.

[0119] After the positioning mechanism is installed, the transverse opening of the groove can be sealed by heat shrinking, sealing or other methods, or it can be left unsealed. Since the medical beams and other components that can be used in this device are low-voltage and low-current components, and the tube placement time is extremely short, the power is cut off as soon as the tube placement is completed, and there is no risk of burns to the human body.

[0120] Similarly, the pre-embedded method can be either the single light-emitting component of Scheme 1 or the dual independent light-emitting components of Scheme 2.

[0121] Option 4, such as Figure 10 As shown, the nasoenteric segment 101 has a double-layer structure, including an inner tube 1011 and an outer tube 1012 nested together. The inner tube 1011 and the outer tube 1012 need to reserve the position of the outlet hole, that is, the outlet hole is connected to the inner tube but not to the outer tube, so that the space between the inner and outer tubes is a space that has no interaction with liquids or body fluids.

[0122] The inner tube 1011 can accommodate the passage of a guidewire;

[0123] The positioning mechanism 200 is located between the inner and outer tubes. This design isolates the electrical equipment from contact with fluids or bodily fluids, thus preventing even minute currents from affecting the internal environment of the human body.

[0124] Similarly, when it is a case of dual independent light sources as shown in Scheme 2, the gastric tube segment is also set as a double-layer structure.

[0125] Regarding positioning mechanisms, in addition to fixed installation methods (i.e., traditional fixing methods such as thermoplastic, one-piece molding, bonding, and binding), they can also be detachable (i.e., detachable) structures.

[0126] For example Figure 11 As shown, the inner surface of the sealing end (which can be a single intestinal segment or an intestinal segment plus a gastric segment under dual light sources) has a deformable hook 122;

[0127] The positioning mechanism has a ring 220 at the corresponding position of the deformable hook. The two are connected by hooking the ring 220 with the hook 122. When the tube is placed and no light-emitting element is needed, the hook can be deformed directly by pulling with external force and the ring can be detached.

[0128] Regarding the light-emitting components, they include light-emitting elements with different colors of light;

[0129] Different colored light-emitting elements are respectively set at different positions on the nasogastric tube body (such as the differences between the gastric tube segment and the intestinal tube segment mentioned above), or indicate a specific position, or indicate a specific length range.

[0130] This embodiment suggests that the layout of the light source at this specific location, namely the liquid outlet, can be as follows: Figure 12 As shown, by arranging a ring of light-emitting components 201 that are different from other colors around the liquid outlet, the position of the liquid outlet is indicated, so as to more clearly know whether the liquid outlet has passed through the stomach and entered the intestine or entered the stomach.

[0131] In this embodiment, it is suggested that the specific length range is represented by different light colors corresponding to different tube depths, such as blue for 0-10cm, red for 10-15cm, yellow for 15-20cm, and green for 20-25cm, or alternating colors. This makes it easier to determine the depth of the tube and to make simple measurements of the internal environment.

[0132] In addition, the external viewing surface of the nasogastric tube body may also be provided with graduations to determine the total depth of the tube body.

[0133] While the foregoing description has focused on embodiments, these are merely illustrative and do not limit the scope of the invention. Those skilled in the art will understand that various modifications and applications not illustrated above can be made without departing from the essential characteristics of the embodiments. For example, the constituent elements specifically shown in the embodiments can be implemented through modifications. Furthermore, various differences related to such modifications and applications should be interpreted as including within the scope of the invention as defined in the appended claims.

Claims

1. A transnasal gastrointestinal tube that can be positioned during minimally invasive surgery, characterized in that: It includes a nasogastric tube body and a positioning mechanism; The positioning mechanism extends through the entire length of the nasogastric tube body and has a plurality of light-emitting components. The light-emitting components are set at specific intervals or positions to position the entire or partial body of the nasogastric tube.

2. The nasogastric tube for positioning during minimally invasive surgery as described in claim 1, characterized in that: The nasogastric tube body has a fluid inlet and an outlet; The input end is equipped with a connector for connecting to a fluid input device; The output end has a sealed end structure, and the proximal end of the sealed end has a liquid outlet hole.

3. The nasogastric tube for positioning during minimally invasive surgery as described in claim 2, characterized in that: The light-emitting component points to the position of the liquid outlet.

4. A transnasal gastrointestinal tube for positioning during minimally invasive surgery as described in any one of claims 1-3, characterized in that: The nasogastric tube body has a pre-embedded groove; The positioning mechanism is embedded in a pre-embedded groove by pre-embedding. or The nasogastric tube body has a double-layer structure, comprising a nested inner tube and an outer tube; The inner tube can accommodate the passage of a guide wire; The positioning mechanism is located between the inner tube and the outer tube.

5. A transnasal gastrointestinal cannula for positioning during minimally invasive surgery as described in claim 1, characterized in that: The nasogastric tube body includes a nasogastric segment tube and a nasointestinal segment tube. The rear ends of the nasogastric segment cannula and the nasointestinal segment cannula form a double-chamber shape at the rear end of the nasogastric and intestinal cannula body. The front end of the nasoenteric segment cannula is later transformed into a single tube shape at the front end of the nasogastric and intestinal cannula body. The positioning mechanism extends through the entire length of the nasogastric tube body and has a plurality of light-emitting components. The light-emitting components are set at specific intervals or positions to locate the entire or partial portion of the nasoenteric segment cannula and to differentiate the location of the nasogastric segment cannula.

6. A transnasal gastrointestinal cannula for positioning during minimally invasive surgery as described in claim 5, characterized in that: The nasoenteric segment cannula has an intestinal segment fluid inlet and an intestinal segment fluid outlet; The intestinal fluid input end is equipped with a connector that connects to the intestinal fluid input device. The intestinal fluid output end is a sealed structure, and the proximal end of the sealed end has an intestinal fluid outlet hole; The nasogastric cannula has a gastric fluid inlet and a gastric fluid outlet. The gastric fluid input end is equipped with a connector that connects to the gastric fluid input device. The gastric fluid output end is a sealed structure, and the proximal end of the sealed end has a gastric fluid outlet hole.

7. A transnasal gastrointestinal cannula for positioning during minimally invasive surgery as described in claim 6, characterized in that: The light-emitting component points to the location of the fluid outlet hole in the intestinal segment; and The light-emitting component also points to the location of the gastric fluid outlet and provides an indication that is distinct from the nasoenteric cannula or the intestinal fluid outlet.

8. A transnasal gastrointestinal tube for positioning during minimally invasive surgery as described in any one of claims 5-7, characterized in that: The nasogastric tube body has a pre-embedded groove; The positioning mechanism is embedded in a pre-embedded groove by pre-embedding. or The nasogastric tube body has a double-layer structure, comprising a nested inner tube and an outer tube; The positioning mechanism is located between the inner tube and the outer tube.

9. A transnasal gastrointestinal tube for positioning during minimally invasive surgery as described in claim 1, characterized in that: The positioning mechanism is detachably connected to the nasogastric tube body.

10. A transnasal gastrointestinal cannula for positioning during minimally invasive surgery as described in claim 1, characterized in that: The light-emitting component includes light-emitting elements of different colors; The light-emitting elements of different colors are respectively set at different positions on the nasogastric tube body, or represent a specific position, or represent a specific length range.

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