Pressure measuring stomach tube assembly

Abstract

The embodiment of the utility model provides a pressure measuring stomach tube assembly. The pressure measuring stomach tube assembly comprises a stomach tube and an indwelling catheter guide wire. The stomach tube comprises a tube body and an air bag, the tube body is provided with a nutrition conveying channel and an air guide channel, and the air bag is arranged on the outer surface of the tube body and communicated with the air guide channel. The catheter guide wire comprises a guide wire body and a stomach tube protection structure, the guide wire body is provided with a first end and a second end which are opposite, and the stomach tube protection structure is arranged at the first end; the catheter guide wire can be inserted into the nutrition delivery channel, and the stomach tube protection structure is located in the nutrition delivery channel. According to the pressure measuring stomach tube assembly, the guide wire can be well prevented from hurting a patient.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a pressure measuring gastric tube assembly. Background Art

[0002] In the medical field, patients often use various catheters, among which the nasogastric tube is one of them. The nasogastric tube is usually inserted into the patient's nasal cavity, through the esophagus and into the patient's stomach to provide nutrition or gastrointestinal decompression.

[0003] In order to ensure that the gastric tube can be placed smoothly, the gastric tube in related technology is usually equipped with a tube guide wire. Before the tube placement operation, by inserting the tube guide wire into the interior of the gastric tube, it can provide rigid support for the gastric tube during the subsequent tube placement operation, so that the gastric tube can be smoothly placed in the patient's stomach.

[0004] However, during the catheterization operation, the end of the catheterization guidewire can easily pass through the gastric tube and scratch the patient's digestive tract or stomach. Therefore, the catheterization guidewire in the related art has certain medical risks. Utility Model Content

[0005] In view of this, the embodiments of the present application hope to provide a manometric gastric tube assembly that can better avoid causing harm to the patient.

[0006] To achieve the above objectives, the present invention provides a manometric gastric tube assembly, comprising:

[0007] A gastric tube, comprising a tube body and an air bag, wherein the tube body has a nutrient delivery channel and an air guide channel, and the air bag is arranged on the outer surface of the tube body and communicates with the air guide channel;

[0008] A tube placement guidewire, comprising a guidewire and a gastric tube protection structure, wherein the guidewire has a first end and a second end opposite to each other, and the gastric tube protection structure is arranged at the first end; the tube placement guidewire can be inserted and removed into the nutrition delivery channel, and the gastric tube protection structure is located in the nutrition delivery channel.

[0009] An embodiment of the present application provides a pressure measuring gastric tube assembly. The placement guide wire of the pressure measuring gastric tube assembly is equipped with a gastric tube protection structure at the first end of the guide wire. This can effectively prevent the first end of the guide wire from passing through the gastric tube and scratching the patient's digestive tract or stomach during the placement operation, thereby effectively avoiding the guide wire from causing harm to the patient. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is a schematic structural diagram of a gastric tube of a manometric gastric tube assembly according to an embodiment of the present application;

[0011] Figure 2 for Figure 1 A cross-sectional view of the tube body is shown;

[0012] Figure 3 This is a schematic structural diagram of a guide wire for placing a manometry gastric tube assembly according to an embodiment of the present application;

[0013] Figure 4 for Figure 3 Schematic diagram of the structure of the guide wire shown;

[0014] Figure 5 for Figure 3 The schematic structural diagram of the gastric tube protection structure shown;

[0015] Figure 6 for Figure 5 A schematic structural diagram of the gastric tube protection structure from another perspective is shown;

[0016] Figure 7 for Figure 3 The catheter guidewire is shown Figure 1 The schematic diagram of the structure inside the gastric tube is shown, which only shows part of the structure of the gastric tube and the guide wire;

[0017] Figure 8 for Figure 7 AA cross-sectional view;

[0018] Figure 9 for Figure 1 A schematic structural diagram of a tube connector for a gastric tube is shown;

[0019] Figure 10 for Figure 9 A structural schematic diagram of the pipe joint from another perspective is shown;

[0020] Figure 11 This is a schematic structural diagram of another pipe joint according to an embodiment of the present application.

[0021] Description of Reference Numerals

[0022] 10. Gastric tube; 11. Tube body; 11a. Nutrition delivery channel; 11aa. First inner wall; 11b. Air guide channel; 11c. Murphy's hole; 12. Air bag; 13. Tube joint; 13a. Guide channel; 13a1. Second inner wall; 14. Nasogastric feeding connector; 20. Tube guide wire 20; 21. Guide wire; 21a. First end; 21b. Second end; 22. Gastric tube protection structure; 22a. Avoidance groove; 221. Head; 222. Connecting part; 23. Gripping structure. DETAILED DESCRIPTION

[0023] In the description of the embodiments of the present application, it should be noted that the directions or positional relationships indicated by the terms "first direction" and "second direction" are based on the attached Figure 6 The directions or positional relationships shown in the figure, and the directions or positional relationships indicated by “third directions” etc. are based on the Figure 10 The orientation or positional relationship shown, these orientation terms are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0024] The present application embodiment provides a manometric gastric tube assembly, see Figures 1 to 8 The pressure measuring gastric tube assembly includes a gastric tube 10 and a tube placement guide wire 20.

[0025] See also Figure 1 and Figure 2 The gastric tube 10 includes a tube body 11 and an air bag 12. The tube body 11 has a nutrition delivery channel 11a and an air guide channel 11b. The air bag 12 is arranged on the outer surface of the tube body 11 and communicates with the air guide channel 11b.

[0026] The nutrition delivery channel 11a is a channel for delivering nutrients to the patient and performing gastrointestinal decompression. Figure 7 The tube body 11 is generally provided with a Murphy hole 11c extending through the tube body 11 and communicating with the nutrient delivery passage 11a. The number of Murphy holes 11c may be one or more. The gastric tube 10 connects the patient's stomach with the outside of the body through the Murphy holes 11c. Nutrients in the nutrient delivery passage 11a enter the patient's stomach through the Murphy holes 11c to achieve nutritional supply, while gastric juice in the stomach also enters the nutrient delivery passage 11a through the Murphy holes 11c to achieve gastrointestinal decompression.

[0027] Air channel 11b and balloon 12 are used to implement pressure monitoring. Specifically, after a gastric tube is inserted into a patient, monitoring the pressure in the esophagus or stomach and calculating relevant parameters based on the monitoring results are crucial for reducing esophageal or gastric damage. Air channel 11b transfers the air in balloon 12 to a pressure monitoring device outside the body for pressure monitoring.

[0028] That is to say, in addition to the basic functions of providing nutrition and gastrointestinal decompression for the patient, the gastric tube 10 in the embodiment of the present application also has the function of pressure monitoring.

[0029] The number of air guiding channels 11 b and the number of air bags 12 can be adjusted according to design requirements. For example, the gastric tube 10 can be provided with one air bag 12 and multiple air guiding channels 11 b , and all the air guiding channels 11 b are connected to the air bag 12 .

[0030] For example, Figure 1 and Figure 2The stomach tube 10 shown is provided with two air guiding channels 11 b and an air bag 12 , and both of the air guiding channels 11 b are communicated with the air bag 12 .

[0031] In other embodiments, the gastric tube 10 may be provided with only one gas guiding channel 11 b , that is, the air bag 12 may be communicated with only one gas guiding channel 11 b .

[0032] In other embodiments, the gastric tube 10 may also be provided with multiple air guide channels 11b and multiple air balloons 12, and each air balloon 12 is connected to at least one air guide channel 11b, that is, the air balloons 12 may be connected to the air guide channels 11b one by one, or at least some of the air balloons 12 may also be connected to more than one air guide channel 11b.

[0033] Please continue reading Figures 3 to 8 The intubation guidewire 20 includes a guidewire 21 and a gastric tube protection structure 22. The guidewire 21 has a first end 21a and a second end 21b opposite to each other. The gastric tube protection structure 22 is disposed at the first end 21a. The intubation guidewire 20 is removably inserted into the nutrition delivery channel 11a, and the gastric tube protection structure 22 is located within the nutrition delivery channel 11a.

[0034] The tube placement guide wire 20 is used to provide rigid support for the gastric tube 10 during the tube placement operation.

[0035] The guide wire 20 can be inserted into and removed from the nutrient delivery channel 11a. The guide wire 20 can be inserted into and removed from the nutrient delivery channel 11a to provide rigid support for the gastric tube 10.

[0036] The guide wire 21 is the main structure of the catheter guide wire 20. The guide wire 21 can be made of a rigid material such as stainless steel. For example, the guide wire 21 can be woven from multiple steel wires made of a rigid material such as stainless steel, or the guide wire 21 can be a non-woven elongated strip structure.

[0037] See also Figure 4 and Figure 7The first end 21a and the second end 21b of the guide wire 21 are the ends at opposite ends of the guide wire 21 along its own extension direction. The first end 21a of the guide wire 21 faces the nutrient delivery channel 11a so that the intubation guide wire 20 can be inserted into the nutrient delivery channel 11a. After the intubation guide wire 20 is inserted into the nutrient delivery channel 11a, the first end 21a can be located inside the nutrient delivery channel 11a and the second end 21b can be located outside the nutrient delivery channel 11a. Alternatively, both the first end 21a and the second end 21b can be located inside the nutrient delivery channel 11a. That is, of the first end 21a and the second end 21b, at least the first end 21a is located inside the nutrient delivery channel 11a.

[0038] The gastric tube protection structure 22 is used to protect the first end portion 21a of the guidewire 21. The gastric tube protection structure 22 can wrap around the first end portion 21a, i.e., the first end portion 21a is located within the gastric tube protection structure 22. This improves the reliability of the connection between the gastric tube protection structure 22 and the guidewire 21. In other embodiments, the gastric tube protection structure 22 can be connected only to the first end portion 21a, but the first end portion 21a is not located within the gastric tube protection structure 22.

[0039] The specific structure of the gastric tube protection structure 22 is not limited, for example, please refer to Figure 5 The gastric tube protection structure 22 may include a head 221 and a connecting portion 222 arranged on one side of the head 221 .

[0040] The head 221 is the main protective part of the stomach tube protection structure 22. The shape of the head 221 is not limited, for example, Figure 5 As shown, a portion of the head 221 is cylindrical, and another portion of the head 221 is spherical.

[0041] The connecting portion 222 mainly serves to connect the guide wire 21. The outer shape of the connecting portion 222 can be gradually contracted from the side close to the head 221 to the side away from the head 221. That is, the farther away from the head 221 the connecting portion 222 is, the smaller the cross-sectional area (the cross-sectional area of the connecting portion 222 is the area of the cross section of the connecting portion 222 perpendicular to the extending direction of the guide wire 21) is. For example, the connecting portion 222 can be approximately Figure 5 This design with a tapered cross-sectional area (such as the tapered design shown in the figure) can provide a guiding effect when the user pulls the guide wire 21 to return the gastric tube protection structure 22 to the nutrition delivery channel 11a after the gastric tube protection structure 22 accidentally passes through the Murphy hole 11c.

[0042] In other embodiments, the gastric tube protection structure 22 may also be a spherical structure, an ellipsoidal structure, a columnar structure (such as a cylindrical structure or a polygonal column) or other special-shaped structures.

[0043] To facilitate processing and manufacturing, for example, the guide wire 21 and the gastric tube protection structure 22 can be an integrally molded injection molded structure, that is, the guide wire 21 and the gastric tube protection structure 22 can be formed into an integrally molded structure using an injection molding process, for example, the guide wire 21 and the gastric tube protection structure 22 can be formed into an integrally molded structure using a rubber-coated injection molding process.

[0044] The catheter placement guide wire 20 of the embodiment of the present application is provided with a gastric tube protection structure 22 at the first end portion 21a of the guide wire 21. This can better prevent the first end portion 21a of the guide wire 21 from passing through the gastric tube 10 and scratching the patient's digestive tract or stomach during the catheter placement operation, thereby better avoiding the guide wire 21 from causing harm to the patient.

[0045] In one embodiment, please refer to Figure 7 , Figure 7 Equivalent to the projection of the catheter guide wire 20 and the tube body 11 on the projection plane perpendicular to the penetrating direction of the Murphy hole 11c. Figure 7 On a projection plane perpendicular to the penetration direction of the Murphy's hole 11c, the projection of at least a portion of the stomach tube protection structure 22 may be located outside the projection of the Murphy's hole 11c. The penetration direction of the Murphy's hole 11c refers to the direction in which the Murphy's hole 11c penetrates the tube body 11.

[0046] The projection of at least part of the gastric tube protection structure 22 is located outside the projection of the Murphy's hole 11c, which means that after the catheter guide wire 20 is inserted into the nutrition delivery channel 11a, the gastric tube protection structure 22 can be completely staggered with the Murphy's hole 11c, that is, the gastric tube protection structure 22 is not at the Murphy's hole 11c, or the gastric tube protection structure 22 can also be located at the Murphy's hole 11c (for example, Figure 7 However, a portion of the gastric tube protection structure 22 faces the inner wall of the nutrient delivery channel 11a, which is located around the Murphy's hole 11c. That is, in the projection direction, the gastric tube protection structure 22 is larger than the Murphy's hole 11c. As a result, even when the gastric tube protection structure 22 is located at the Murphy's hole 11c, it will not easily pass through the Murphy's hole 11c. This arrangement effectively prevents the gastric tube protection structure 22 from passing through the Murphy's hole 11c to the outside of the tube body 11 and causing harm to the patient.

[0047] In one embodiment, please refer to Figure 5 and Figure 6 The outer surface of the gastric tube protection structure 22 can be a curved surface with a curvature not equal to 0, that is, the outer surface of the gastric tube protection structure 22 has almost no plane, or in other words, the outer surface of the gastric tube protection structure 22 has almost no edges or corners, thereby better preventing the gastric tube protection structure 22 from scratching the inner wall of the nutrition delivery channel 11a.

[0048] In one embodiment, please refer to Figure 2 Part of the nutrient delivery channel 11a may be recessed toward the interior of the nutrient delivery channel 11a along its extension direction, so that the inner sidewall of the nutrient delivery channel 11a located at the recessed portion forms a first inner sidewall 11aa. In other words, the cross-sectional shape of the nutrient delivery channel 11a may not be a regular shape such as a circle; a portion of the outer contour of the cross-sectional shape of the nutrient delivery channel 11a may be recessed toward the interior of the nutrient delivery channel 11a.

[0049] The nutrient delivery channel 11a may have multiple areas that are recessed toward the interior of the nutrient delivery channel 11a, which is equivalent to the nutrient delivery channel 11a having multiple first inner sidewalls 11aa, which are arranged along the circumference of the nutrient delivery channel 11a. For example, Figure 2 The nutrient delivery channel 11a shown has two areas recessed toward the interior of the nutrient delivery channel 11a, which is equivalent to the nutrient delivery channel 11a having two first inner side walls 11aa, which are arranged along the circumference of the nutrient delivery channel 11a.

[0050] In other embodiments, the nutrient delivery channel 11a may have only one area that is recessed toward the interior of the nutrient delivery channel 11a, which corresponds to the number of the first inner sidewall 11aa being one.

[0051] See also Figure 2 The air guide channel 11b can be arranged on a side of the first inner side wall 11aa away from the nutrient delivery channel 11a.

[0052] Specifically, the first inner sidewalls 11aa may correspond to the air guiding channels 11b one by one, that is, the number of the first inner sidewalls 11aa and the air guiding channels 11b is the same, and each first inner sidewall 11aa is provided with an air guiding channel 11b on the side away from the nutrient delivery channel 11a. For example, Figure 2 The tube body 11 shown is provided with two air guide channels 11b, and the nutrient delivery channel 11a is provided with two first inner side walls 11aa. An air guide channel 11b is provided on one side of each first inner side wall 11aa away from the nutrient delivery channel 11a.

[0053] In other embodiments, when the number of air guiding channels 11b is multiple, the number of first inner side walls 11aa may be less than the number of air guiding channels 11b, and two or more air guiding channels 11b may be set on the side of the first inner side wall 11aa away from the nutrient delivery channel 11a. That is to say, the first inner side wall 11aa may not correspond one-to-one with the air guiding channels 11b. For example, the tube body 11 may be provided with two air guiding channels 11b, the nutrient delivery channel 11a may be provided with one first inner side wall 11aa, and the two air guiding channels 11b may be provided on the side of the same first inner side wall 11aa away from the nutrient delivery channel 11a.

[0054] Since a partial area of the nutrient delivery channel 11a is recessed toward the interior of the nutrient delivery channel 11a along the extension direction of the nutrient delivery channel 11a, the tube body 11 located on the side of the first inner side wall 11aa away from the nutrient delivery channel 11a can form an area with a relatively large cross-sectional area (the cross-sectional area of the tube body 11 is the area of the cross section of the tube body 11 perpendicular to the extension direction of the nutrient delivery channel 11a). Therefore, arranging the air guide channel 11b on the side of the first inner side wall 11aa away from the nutrient delivery channel 11a can facilitate the arrangement of the air guide channel 11b.

[0055] For example, at least a portion of the air guiding channel 11b may be located in the recess of the nutrient delivery channel 11a, that is, the air guiding channel 11b may be as close to the first inner side wall 11aa as possible, for example, Figure 2 Part of the air channel 11b is located in the recess of the nutrition delivery channel 11a. In other embodiments, the entire air channel 11b may be located in the recess of the nutrition delivery channel 11a. This arrangement can minimize the space occupied by the nutrition delivery channel 11a and the air channel 11b, making the layout of the nutrition delivery channel 11a and the air channel 11b on the tube body 11 more compact, thereby reducing the cross-sectional area of the tube body 11 and making it easier to insert the gastric tube 10 into the patient's stomach.

[0056] In other embodiments, the air guiding channel 11b may also be provided on the side of the first inner side wall 11aa away from the nutrient delivery channel 11a, but not located in the recess of the nutrient delivery channel 11a.

[0057] In other embodiments, the air-guiding channel 11b may not be provided on the side of the first inner sidewall 11aa facing away from the nutrient delivery channel 11a. For example, another channel may be provided on the side of the first inner sidewall 11aa facing away from the nutrient delivery channel 11a. Alternatively, when there are multiple first inner sidewalls 11aa, the air-guiding channel 11b may not be provided on the side of some first inner sidewalls 11aa facing away from the nutrient delivery channel 11a.

[0058] Please continue reading Figure 2 、 Figure 5 、 Figure 6 and Figure 8 An avoidance groove 22a can be provided on the outer surface of the gastric tube protection structure 22, and the avoidance groove 22a avoids the first inner side wall 11aa. That is to say, the cross-sectional area of the gastric tube protection structure 22 can be increased as much as possible so that the gastric tube protection structure 22 can play a better protective role. At the same time, by providing the avoidance groove 22a, the gastric tube protection structure 22 can be prevented from interfering with the first inner side wall 11aa as much as possible.

[0059] See also Figure 2 、 Figure 5 、 Figure 6 and Figure 8 For the nutrition delivery channel 11a provided with multiple first inner walls 11aa, the outer surface of the gastric tube protection structure 22 can be provided with avoidance grooves 22a corresponding to the first inner walls 11aa one by one, that is, each avoidance groove 22a can avoid the corresponding first inner wall 11aa respectively.

[0060] In one embodiment, please refer to Figure 9 The gastric tube 10 can be provided with a tube joint 13 having a guide channel 13a. The tube joint 13 is provided at one end of the tube body 11. The guide channel 13a is connected to the nutrition delivery channel 11a. The catheter guide wire 20 is placed into the nutrition delivery channel 11a through the guide channel 13a.

[0061] See also Figure 1 The gastric tube 10 is generally provided with a nasogastric connector 14 connected to the nutrition delivery channel 11a. Therefore, the tube connector 13 can be set at the end of the nasogastric connector 14 away from the tube body 11, so that the guide channel 13a is connected to the nutrition delivery channel 11a through the nasogastric connector 14.

[0062] The guide channel 13a is mainly used to guide the gastric tube protection structure 22 during the process of inserting the tube guide wire 20 into the nutrition delivery channel 11a, thereby facilitating the insertion of the tube guide wire 20 into the nutrition delivery channel 11a.

[0063] For example, for ease of description, the cross section of the gastric tube protection structure 22 perpendicular to the extension direction of the guide wire 21 may be referred to as a first cross section, and the cross section of the guide channel 13a perpendicular to the extension direction of the guide channel 13a may be referred to as a second cross section. Figure 6 is equivalent to a schematic diagram of a first cross section of the gastric tube protection structure 22, Figure 10 The guide channel 13 a shown is equivalent to a schematic diagram of a second cross section of the guide channel 13 a.

[0064] See also Figure 6 The first cross-section of the gastric tube protection structure 22 has a first width dimension along a first direction of the gastric tube protection structure 22 and a second width dimension along a second direction of the gastric tube protection structure 22. The second direction intersects the first direction, and the first width dimension is smaller than the second width dimension. That is, the first cross-section of the gastric tube protection structure 22 has a relatively short first width dimension and a relatively long second width dimension. Figure 6 The second direction is perpendicular to the first direction. In other embodiments, the second direction may also be oblique to the first direction.

[0065] Please continue reading Figure 10The second cross-section of the guide channel 13a has a third width dimension along a third direction of the gastric tube 10, which is parallel to the first direction. The third width dimension is larger than the first width dimension and smaller than the second width dimension, so that the guide channel 13a and the gastric tube protection structure 22 are locked in a non-rotatable manner. Non-rotatable means that the gastric tube protection structure 22 cannot rotate within the guide channel 13a, thereby maintaining a specific insertion orientation and achieving the purpose of guidance.

[0066] Specifically, during the process of inserting the catheter guide wire 20 into the nutrition delivery channel 11a, the first direction of the gastric tube protection structure 22 is parallel to the third direction of the guide channel 13a. Since the third width dimension of the guide channel 13a is larger than the first width dimension of the gastric tube protection structure 22, the part of the gastric tube protection structure 22 corresponding to the first width dimension can enter the area of the guide channel 13a corresponding to the third width dimension. However, since the third width of the guide channel 13a is smaller than the second width dimension of the gastric tube protection structure 22, even if a rotational force is applied to the catheter guide wire 20, the part of the gastric tube protection structure 22 corresponding to the second width dimension cannot enter the area of the guide channel 13a corresponding to the third width dimension. Therefore, the gastric tube protection structure 22 can be guided from the guide channel 13a into the nutrition delivery channel 11a by preventing the gastric tube protection structure 22 from rotating in the guide channel 13a.

[0067] See also Figure 9 and Figure 10 For the nutrition delivery channel 11a having a first inner side wall 11aa, the first inner side walls 11aa can be respectively provided on opposite sides of the nutrition delivery channel 11a along the first direction, and the gastric tube protection structure 22 can be respectively provided on opposite sides of the first direction to avoid the corresponding first inner side walls 11aa. At the same time, the guide channel 13a is respectively provided with second inner side walls 13a1 on opposite sides along the third direction, that is, the second inner side walls 13a1 correspond one-to-one to the first inner side walls 11aa. After the gastric tube protection structure 22 enters the nutrition delivery channel 11a from the guide channel 13a under the guidance of the guide channel 13a, each avoidance groove 22a can face the corresponding first inner side wall 11aa.

[0068] See also Figure 9 and Figure 10 The two second inner side walls 13a1 can both be curved surfaces that protrude toward the interior of the guide channel 13a and cooperate with the avoidance groove 22a. That is, the shape of the cross section of the guide channel 13a can be similar to the shape of the cross section of the gastric tube protection structure 22, so that the operator can intuitively understand how to insert the gastric tube protection structure 22 into the guide channel 13a.

[0069] In other embodiments, only one second inner side wall 13a1 may be a curved surface that protrudes toward the interior of the guide channel 13a and cooperates with the avoidance groove 22a.

[0070] In other embodiments, both second inner side walls 13a1 may be Figure 11 Alternatively, only one second inner side wall 13a1 may be a plane.

[0071] In one embodiment, please refer to Figure 3 The catheter guide wire 20 may further be provided with a gripping structure 23, which is provided at the second end portion 21b of the guide wire 21. The gripping structure 23 is used for the operator to grip, thereby facilitating the operator to insert or remove the catheter guide wire 20 into or from the nutrient delivery channel 11a.

[0072] In the description of this application, the descriptions with reference to the terms "in one embodiment", "in some embodiments", "in other embodiments", or "exemplary" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this application, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine different embodiments or examples described in this application and the features of different embodiments or examples without contradiction.

[0073] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application are intended to be within the scope of protection of the present application.

Claims

1. A manometric gastric tube assembly, characterized in that: include: A gastric tube, comprising a tube body and an air bag, wherein the tube body has a nutrient delivery channel and an air guide channel, and the air bag is arranged on the outer surface of the tube body and communicates with the air guide channel; A tube placement guidewire, comprising a guidewire and a gastric tube protection structure, wherein the guidewire has a first end and a second end opposite to each other, and the gastric tube protection structure is arranged at the first end; the tube placement guidewire can be inserted and removed into the nutrition delivery channel, and the gastric tube protection structure is located in the nutrition delivery channel.

2. The manometric gastric tube assembly according to claim 1, characterized in that: The tube body has a Murphy's hole that passes through the tube body and is connected to the nutrition delivery channel. On a projection plane perpendicular to the penetration direction of the Murphy's hole, the projection of at least part of the gastric tube protection structure is located outside the projection of the Murphy's hole.

3. The manometric gastric tube assembly according to claim 1 or 2, characterized in that: The gastric tube protection structure wraps the first end portion.

4. The manometric gastric tube assembly according to claim 1 or 2, characterized in that: The outer surface of the gastric tube protection structure is a curved surface with a curvature not equal to 0; and / or, The guide wire and the gastric tube protection structure are an integrally formed injection-molded structure.

5. The manometric gastric tube assembly according to claim 1 or 2, characterized in that: The gastric tube protection structure includes a head and a connecting portion arranged on one side of the head. The shape of the connecting portion gradually shrinks from a side close to the head to a side away from the head, and the guide wire is connected to the connecting portion.

6. The manometric gastric tube assembly according to claim 1 or 2, characterized in that: A partial area of the nutrient delivery channel is recessed toward the interior of the nutrient delivery channel along the extension direction of the nutrient delivery channel, so that the inner side wall of the nutrient delivery channel at the recess forms a first inner side wall, and the air guide channel is arranged on the side of the first inner side wall away from the nutrient delivery channel.

7. The manometric gastric tube assembly according to claim 6, characterized in that: At least a portion of the air-guiding channel is located in the recess of the nutrient delivery channel.

8. The manometric gastric tube assembly according to claim 6, characterized in that: An avoidance groove is provided on the outer surface of the stomach tube protection structure, and the avoidance groove avoids the first inner wall.

9. The manometric gastric tube assembly according to claim 8, characterized in that: The nutrition delivery channel has a plurality of first inner side walls, which are arranged along the circumference of the nutrition delivery channel, and the outer surface of the gastric tube protection structure is provided with the avoidance grooves corresponding one-to-one to the first inner side walls.

10. The manometric gastric tube assembly according to claim 1, characterized in that: The gastric tube includes a tube joint with a guide channel, which is arranged at one end of the tube body. The guide channel is connected to the nutrition delivery channel, and the tube guide wire is inserted into the nutrition delivery channel through the guide channel.

11. The manometric gastric tube assembly according to claim 10, characterized in that: The gastric tube protection structure has a first cross-section perpendicular to the extension direction of the guide wire, the first cross-section has a first width dimension along a first direction of the gastric tube protection structure and a second width dimension along a second direction of the gastric tube protection structure, the second direction intersects the first direction, and the first width dimension is smaller than the second width dimension; The guide channel has a second cross-section perpendicular to the extension direction of the guide channel, and the second cross-section has a third width dimension along the third direction of the gastric tube, and the third direction is parallel to the first direction; the third width dimension is larger than the first width dimension and smaller than the second width dimension, so that the guide channel and the gastric tube protection structure can be prevented from rotating.

12. The manometric gastric tube assembly according to claim 11, characterized in that: Two opposite sides of the nutrient delivery channel along the third direction are respectively recessed toward the interior of the nutrient delivery channel along the extension direction of the nutrient delivery channel, so that the inner sidewall of the nutrient delivery channel located at the recessed portion forms a first inner sidewall; two opposite sides of the gastric tube protection structure along the first direction are respectively provided with avoidance grooves for avoiding the corresponding first inner sidewalls; and two opposite sides of the guide channel along the third direction are respectively provided with second inner sidewalls; At least one of the two second inner side walls is a plane; or, at least one of the two second inner side walls is a curved surface that protrudes toward the interior of the guide channel and cooperates with the avoidance groove.

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