Digestive juice isolation catheter assembly

Abstract

The utility model discloses a digestive juice isolation catheter assembly, and relates to the field of medical equipment. The digestive juice isolation catheter piece comprises a flow guide pipe, a first developing piece, a second developing piece, a first expansion body and a second expansion body, the first developing piece and the second developing piece are arranged, the first developing piece and the second developing piece can be developed under X rays, and the first expansion body and the second expansion body cover the first developing piece and the second developing piece respectively. Therefore, the positions of the first expansion body and the second expansion body can be clearly determined by utilizing the positioning of the first developing part and the second developing part under the irradiation of the X-ray, so that the positions of the first expansion body and the second expansion body can be adjusted in real time to prevent digestive juice from contacting an orificium fistulae; therefore, the digestive juice isolation catheter assembly can be more accurately arranged at the corresponding position, the precision is improved, and the digestive juice is effectively prevented from making contact with an orificium fistulae, so that anastomotic fistula is prevented, orificium fistulae healing is promoted, and the cure rate is increased.

Description

Technical Field

[0001] The utility model relates to the field of medical equipment, in particular to a digestive juice isolation catheter assembly. Background Art

[0002] After excising a diseased part on an intestinal tube such as the intestine, a fistula will be formed, which can be sutured later or wait for self-healing. However, during the process of waiting for self-healing, the digestive juice produced by the intestinal tube and the stomach will directly contact the fistula, easily corrode the fistula and cause infection. For this reason, in related technologies, an intestinal obstruction catheter can be arranged at the fistula to prevent the digestive juice from passing through, so as to avoid the direct contact between the digestive juice and the fistula. In order to send the intestinal obstruction catheter to a designated position, scales are usually arranged on the intestinal obstruction catheter to judge the insertion length of the intestinal obstruction catheter. Since the intestinal lengths of different human bodies are different, the error is relatively large by using the above method, and it is difficult to accurately install the intestinal obstruction catheter in place. Content of the Utility Model

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. For this purpose, the utility model provides a digestive juice isolation catheter assembly, which can more accurately set the digestive juice isolation catheter assembly to a corresponding position and improve the accuracy.

[0004] The digestive juice isolation catheter assembly according to an embodiment of the utility model includes: a diversion tube, one end of which is an outlet end, and the other end is provided with a first joint and a second joint. The diversion tube is provided with a first channel and a second channel. Two ends of the first channel are respectively communicated with the outlet end and the inner cavity of the first joint, and one end of the second channel is communicated with the inner cavity of the second joint;

[0005] A first imaging member and a second imaging member, which are arranged on the diversion tube at intervals, and the first imaging member and the second imaging member can be imaged under X-ray;

[0006] A first inflatable body and a second inflatable body, both of which are connected to the outer wall of the diversion tube, and the first inflatable body covers the first imaging member, and the second inflatable body covers the second imaging member. Inner cavities of the first inflatable body and the second inflatable body are both communicated with the second channel, and the first inflatable body and the second inflatable body are configured to be inflated or filled with water through the second channel.

[0007] The digestive juice isolation catheter assembly according to an embodiment of the utility model has at least the following beneficial effects:

[0008] By providing a first developing member and a second developing member, which are capable of being developed under X-rays, and a first inflatable body and a second inflatable body respectively covering the first developing member and the second developing member. Therefore, under the irradiation of X-rays, by using the positioning of the first developing member and the second developing member, the positions of the first inflatable body and the second inflatable body can be clearly determined, so that the positions of the first inflatable body and the second inflatable body can be adjusted in real time to block the contact between digestive fluid and the fistula opening. Thus, the digestive fluid isolation catheter assembly can be set to the corresponding position more accurately, improving the accuracy. The first inflatable body and the second inflatable body are respectively located on both sides of the fistula opening. When inflated or filled with water through the second channel, the first inflatable body and the second inflatable body expand to block the proximal end and the distal end of the fistula opening, thereby effectively blocking the contact between digestive fluid and the fistula opening, preventing anastomotic fistula, promoting the healing of the fistula opening, and improving the cure rate. One end of the diversion tube is the outlet end, and the other end is provided with a first connector, and the first channel communicates with the lumen of the outlet end and the first connector. Therefore, liquid food can enter the first channel through the first connector and finally flow out from the outlet end, thus bypassing the fistula opening and avoiding the infection of the fistula opening caused by liquid food.

[0009] According to some embodiments of the present invention, the first developing member is located at one end of the first inflatable body close to the second inflatable body, and the second developing member is located at one end of the second inflatable body close to the first inflatable body.

[0010] According to some embodiments of the present invention, the first developing member and / or the second developing member is made of a metal material.

[0011] According to some embodiments of the present invention, the digestive fluid isolation catheter assembly further includes a strip-shaped developing strip, and the developing strip is located between one end of the first inflatable body facing away from the second inflatable body and one end of the second inflatable body facing away from the first inflatable body.

[0012] According to some embodiments of the present invention, the digestive fluid isolation catheter assembly further includes an adsorbent, and the adsorbent is connected to the side wall of the diversion tube and is located between the first inflatable body and the second inflatable body.

[0013] According to some embodiments of the present invention, the digestive fluid isolation catheter assembly further includes a third developing member, which is capable of being developed under X-rays. The third developing member is provided on the diversion tube, and the adsorbent covers the third developing member.

[0014] According to some embodiments of the present utility model, a third joint is provided at one end of the diversion tube away from the outlet end. The diversion tube is further provided with a third channel, and the third channel communicates with the inner cavity of the third joint. A first opening is provided on the side wall of the diversion tube between the first expansion body and the second expansion body, and the first opening communicates with the third channel. The adsorption member covers the first opening.

[0015] According to some embodiments of the present utility model, a negative pressure assembly is provided at one end of the diversion tube away from the outlet end, and the inner cavity of the negative pressure assembly communicates with the inner cavity of the third joint.

[0016] According to some embodiments of the present utility model, the first expansion body is located on the side of the diversion tube close to the outlet end, and the second expansion body is located on the side of the diversion tube away from the outlet end. A second opening communicating with the first channel is provided on the side wall of the diversion tube, and the second opening is located on the side of the second expansion body facing away from the first expansion body.

[0017] According to some embodiments of the present utility model, a pressure gauge is provided at the inlet of the second channel, and the pressure gauge is configured to detect the pressure in the second channel.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present utility model. Description of the Drawings

[0019] The following further describes the present utility model in conjunction with the drawings and embodiments, where:

[0020] Figure 1 is a schematic diagram of the application of a digestive juice isolation catheter assembly according to an embodiment of the present utility model to the human body;

[0021] Figure 2 is a partial schematic diagram of a digestive juice isolation catheter assembly according to an embodiment of the present utility model located in the intestinal tube;

[0022] Figure 3 is a schematic structural diagram of a digestive juice isolation catheter assembly according to an embodiment of the present utility model;

[0023] Figure 4 is a partial structural schematic diagram of a diversion tube according to an embodiment of the present utility model;

[0024] Figure 5 is a cross-sectional view of a diversion tube according to an embodiment of the present utility model.

[0025] Reference Signs:

[0026] Digestive fluid isolation catheter assembly 100; diversion tube 110; first channel 111; second channel 112; third channel 113; outlet end 114; inlet end 115; first joint 1151; second joint 1152; second joint 1153; tube body 117; first opening 1171; second opening 1172; first partition 118; second partition 119; first expansion body 120; second expansion body 130; adsorbent 140; pressure gauge 150; first developer 160; second developer 170; third developer 180; developer strip 190;

[0027] Intestinal tube 200; fistula 210; stomach 220. Specific embodiments

[0028] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present invention and should not be construed as a limitation of the present invention.

[0029] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as up, down, front, back, left, right, etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present invention.

[0030] In the description of the present invention, the meaning of several is one or more, the meaning of multiple is two or more, and understandings such as greater than, less than, exceeding, etc. do not include the present number, and understandings such as above, below, within, etc. include the present number. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0032] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, a digestive fluid isolation catheter assembly 100 according to an embodiment of the present utility model can be used for the intestinal tract 200 of the human body to isolate the intestinal tract 200 with a fistula 210 formed therein, and the intestinal tract 200 can be the duodenum. It should be noted that the end of the intestinal tract 200 close to the stomach 220 is the proximal end, and the end close to the large intestine is the distal end. The digestive fluid isolation catheter assembly 100 according to the embodiment of the present utility model includes: a diversion tube 110, a first imaging member 160, a second imaging member 170, a first expansion body 120, and a second expansion body 130. One end of the diversion tube 110 is an outlet end 114, and the other end is an inlet end 115. The inlet end 115 is provided with a first joint 1151 and a second joint 11531152. A first channel 111 and a second channel 112 are provided in the diversion tube 110. One end of the first channel 111 is communicated with the outlet end 114, and the other end is communicated with the inner cavity of the first joint 1151.

[0033] Referring to Figure 3 and Figure 4 As shown in the figure, the first imaging member 160 and the second imaging member 170 are arranged at intervals on the diversion tube 110, and the first imaging member 160 and the second imaging member 170 can be imaged under X-ray. The first expansion body 120 and the second expansion body 130 are both connected to the outer wall of the diversion tube 110. The first expansion body 120 covers the first imaging member 160, and the second expansion body 130 covers the second imaging member 170. Therefore, the first expansion body 120 and the second expansion body 130 have the function of protecting the first imaging member 160 and the second imaging member 170, effectively avoiding the erosion of the digestive fluid on the first imaging member 160 and the second imaging member 170, and improving the reliability of the first imaging member 160 and the second imaging member 170. The inner cavities of the first expansion body 120 and the second expansion body 130 are both communicated with the second channel 112, and the first expansion body 120 and the second expansion body 130 are configured to be able to be inflated or filled with water through the second channel 112, so that the first expansion body 120 and the second expansion body 130 expand and become larger.

[0034] Referring to Figure 3 As shown in the figure, by providing the first imaging member 160 and the second imaging member 170, and the first imaging member 160 and the second imaging member 170 can be imaged under X-ray, while the first expansion body 120 and the second expansion body 130 respectively cover the first imaging member 160 and the second imaging member 170. Therefore, under the irradiation of X-ray, by using the positioning of the first imaging member 160 and the second imaging member 170, the positions of the first expansion body 120 and the second expansion body 130 in the intestinal tract can be clearly determined, so that the positions of the first expansion body 120 and the second expansion body 130 can be adjusted in real time to block the contact of the digestive fluid with the fistula 210, and the digestive fluid isolation catheter assembly 100 can be set to the corresponding position more accurately, improving the accuracy.

[0035] Referring to Figure 1As shown, when the digestive fluid isolation catheter assembly 100 is disposed within the intestinal tube 200, the inlet end 115 of the diversion tube 110 is located inside the intestinal tube 200, while the outlet end 114 is located outside the human body. Refer to Figure 2 As shown, the first expansion body 120 and the second expansion body 130 are respectively located at both ends of the fistula 210. For example, the first expansion body 120 is located at the distal end of the intestinal tube 200, and the second expansion body 130 is located at the proximal end of the intestinal tube 200. Then, water or gas is filled into the first expansion body 120 and the second expansion body 130 through the second channel 112, so that the first expansion body 120 and the second expansion body 130 expand to block both ends of the fistula 210, thereby reducing the direct contact of digestive fluid with the fistula 210. Since the first channel 111 communicates with the outlet end 114, the patient can supplement the required nutrition in the form of liquid diet. The liquid diet is poured into the first channel 111, passes through the first expansion body 120 and the second expansion body 130 in the first channel 111, and then enters the distal end of the intestinal tube 200 from the outlet end 114, thus avoiding the contact of liquid food with the fistula 210, reducing the corrosion of the fistula 210 by digestive fluid, preventing anastomotic fistula, promoting the healing of the fistula 210, and improving the cure rate.

[0036] Refer to Figure 3 As shown, in the embodiment of the present utility model, the first imaging member 160 is located at one end of the first expansion body 120 close to the second expansion body 130, and the second imaging member 170 is located at one end of the second expansion body 130 close to the first expansion body 120. Therefore, the distance between the first imaging member 160 and the second imaging member 170 generally represents the distance between the first expansion body 120 and the second expansion body 130, facilitating the determination of the relative positions of the first expansion body 120 and the second expansion body 130 under X-ray, so as to improve the accuracy of protecting the fistula 210.

[0037] In the embodiment of the present utility model, the first imaging member 160 and the second imaging member 170 are made of metal materials. The reason why metal materials are imaged under X-ray is mainly due to their high density and high atomic number, which enable them to have a strong absorption ability for X-rays and can generate visible metal particles through photochemical reactions, thus showing a strong signal or shadow in X-ray imaging. In another embodiment, the first imaging member 160 and the second imaging member 170 can also be made of PPSU (polyphenylsulfone) material. By adding a developer, the PPSU material is clearly visible under X-ray irradiation. Alternatively, the first imaging member 160 and the second imaging member 170 can also be made of iodine-containing polymethacrylate, PEEK (polyetheretherketone), barium sulfate, and a suitable solution is specifically selected according to the actual situation.

[0038] Refer to Figure 4As shown, in the embodiment of the present utility model, the digestive fluid isolation catheter assembly 100 further includes a developer strip 190. The developer strip 190 is in a long strip shape and can also be developed under the irradiation of X-rays. The developer strip 190 is located between the end of the first inflatable body 120 facing away from the second inflatable body 130 and the end of the second inflatable body 130 facing away from the first inflatable body 120. Therefore, the developer strip 190 is used to display the overall length of the first inflatable body 120 and the second inflatable body 130, facilitating medical staff to judge the positions of the first inflatable body 120 and the second inflatable body 130 in the intestinal tract and improving the accuracy and reliability of positioning.

[0039] Refer to Figure 2 and Figure 3 As shown, in the embodiment of the present utility model, the digestive fluid isolation catheter assembly 100 further includes an adsorbent 140. The adsorbent 140 is connected to the side wall of the guide tube 110 and is located between the first inflatable body 120 and the second inflatable body 130. The adsorbent 140 is configured to be able to adsorb digestive fluid. The adsorbent 140 is located at the fistula opening 210. The adsorbent 140 can adsorb the digestive fluid generated by the intestinal tube 200 between the first inflatable body 120 and the second inflatable body 130, or adsorb the digestive fluid that penetrates from other positions, etc., so as to reduce the corrosion of the fistula opening 210 by the digestive fluid, prevent anastomotic leakage, promote the healing of the fistula opening 210, and improve the cure rate.

[0040] Refer to Figure 3 and Figure 4 As shown, in the embodiment of the present utility model, the digestive fluid isolation catheter assembly 100 further includes a third developer 180. The third developer 180 can be developed under X-rays. The third developer 180 is provided on the guide tube 110, and the adsorbent 140 covers the third developer 180. The third developer 180 is used to determine the position of the adsorbent 140 in the intestinal tract, so as to better adsorb digestive fluid and promote the healing of the fistula opening 210.

[0041] Refer to Figure 2As shown, in the embodiment of the present utility model, a third joint is provided at one end of the diversion tube 110 away from the outlet end 114. The diversion tube 110 is further provided with a third channel 113, and the third channel 113 communicates with the inner cavity of the third joint. A first opening 1171 is provided on the side wall of the diversion tube 110 between the first expansion body 120 and the second expansion body 130. The first opening 1171 communicates with the third channel 113, and the adsorbent 140 covers the first opening 1171. The digestive juice isolation catheter assembly 100 further includes a negative pressure assembly, and the negative pressure assembly communicates with the inner cavity of the third joint. It can be understood that the adsorption capacity of the adsorbent 140 is prone to saturation, and after saturation, the adsorbent 140 will fail. For this reason, by setting the negative pressure assembly, a negative pressure is generated in the third channel 113, and then the digestive juice adsorbed by the adsorbent 140 can be discharged through the third channel 113, so as to ensure that the adsorbent 140 can continue to function, improve the reliability of the adsorbent 140, and avoid the situation of frequent replacement.

[0042] In the embodiment of the present utility model, the adsorbent 140 can be a sponge. Due to its porous structure, the sponge has excellent adsorption capacity and can quickly absorb and store a large amount of digestive juice to reduce the infection of the digestive juice to the fistula 210. At the same time, medical sponges are usually made of materials that are harmless and non-irritating to the human body. These materials will not cause allergic reactions or rejection reactions when used inside the human body, which is beneficial to the healing and recovery of the fistula 210. Moreover, the sponge is soft and easy to shape, and can easily adapt to various shapes and sizes of the fistula 210 or the area where digestive juice needs to be absorbed. This enables the sponge to closely fit the surface of the fistula 210 and effectively absorb and reduce the leakage of digestive juice.

[0043] In order to avoid situations such as damage, squeezing the intestinal tube 200, or too small pressure to isolate digestive juice due to too large pressure in the first expansion body 120 and the second expansion body 130 during water filling or gas filling. Refer to Figure 1 As shown, in the embodiment of the present utility model, a pressure gauge 150 is provided at the inlet end 115. The pressure gauge 150 is located at the inlet of the second channel 112 and is configured to detect the pressure in the second channel 112. For example, the pressure gauge 150 is a simple pressure gauge 150 for detecting water pressure or air pressure, and a suitable pressure gauge 150 is selected specifically according to whether it is water filling or gas filling. By judging whether the first expansion body 120 and the second expansion body 130 are inflated in place through the magnitude of the pressure, the safety and reliability of use can be improved.

[0044] Refer to Figure 5As shown, in the embodiment of the utility model, the flow guide tube 110 includes a tube body 117, a first partition 118 and a second partition 119. The first partition 118 is arranged in the tube body 117, and the two side edges of the first partition 118 are connected to the inner wall of the tube body 117. One side of the first partition 118 and the inner wall of the tube body 117 form a first channel 111, and the two side edges of the second partition 119 are respectively connected to the other side of the first partition 118 and the inner wall of the tube body 117 to form a second channel 112 and a third channel 113. With the above scheme, the first channel 111, the second channel 112 and the third channel 113 are separated from each other and do not interfere with each other, and the structure of the flow guide tube 110 is compact and occupies a small space. In another embodiment, it is also possible to set three pipelines inside the flow guide tube 110 to form the first channel 111, the second channel 112 and the third channel 113 respectively, and the appropriate scheme is selected according to the actual situation.

[0045] In order to prevent the digestive fluid from accumulating at the upper end of the second expansion body 130, Figure 2 As shown, in the embodiment of the present invention, the first expansion body 120 is located on the side of the drainage tube 110 close to the outlet end 114, the second expansion body 130 is located on the side of the drainage tube 110 away from the outlet end 114, and the side wall of the drainage tube 110 is provided with a second opening 1172 connected to the first channel 111, and the second opening 1172 is located on the side of the second expansion body 130 away from the adsorbent 140. Therefore, the digestive fluid produced by the stomach 220 and the intestinal tube 200 can enter the first channel 111 through the second opening 1172, and then enter the distal end of the intestinal tube 200 from the outlet end 114 of the drainage tube 110, effectively reducing the accumulation of digestive fluid.

[0046] Reference Figure 2 As shown, in the embodiment of the utility model, the shortest distance between the second opening 1172 and the second expansion body 130 is L, which satisfies 0mm≤L≤20mm. It can be understood that when L is less than 0mm, that is, when the second opening 1172 is covered by the second expansion body 130, it is difficult to play a drainage role; when L is greater than 20mm, that is, the distance between the second opening 1172 and the second expansion body 130 is too far, it is easy to cause digestive fluid to accumulate in the intestinal segment between the second opening 1172 and the second expansion body 130. Therefore, a reasonable design of the size of L can effectively reduce the accumulation of digestive fluid at the upper end of the second expansion body 130 and improve the patient's use experience.

[0047] In an embodiment of the present utility model, the first expansion body 120 and the second expansion body 130 are water sacs. The water sacs can adapt to the shape of the intestinal tube 200, closely fit the intestinal wall, and form an effective barrier, thereby greatly reducing the leakage of digestive juices or food residues. Moreover, the water sacs are usually made of medical-grade materials, have good biocompatibility, and will not cause irritation or damage to the intestine. In another embodiment, the first expansion body 120 and the second expansion body 130 are air sacs, and the effects are similar to those of the water sacs, which will not be elaborated here.

[0048] In an embodiment of the present utility model, a water pump is provided at the outlet end 114 of the diversion tube 110, and the water pump is connected to the inner cavity of the second joint 11531152. Water is transported to the water sac through the water pump, so that the water sac can expand to block both ends of the fistula 210. After it is confirmed that the fistula 210 has healed, the water in the water sac can also be pumped out by the water pump, and the volumes of the first expansion body 120 and the second expansion body 130 are reduced, thereby facilitating the extraction of the digestive juice isolation catheter assembly 100 from the intestinal tube 200.

[0049] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present utility model.

Claims

1. A digestive fluid isolation catheter assembly, characterized in that: include: A flow guide tube, one end of which is an outlet end, and the other end of which is provided with a first joint and a second joint, wherein the flow guide tube is provided with a first channel and a second channel, wherein the two ends of the first channel are respectively connected to the outlet end and the inner cavity of the first joint, and one end of the second channel is connected to the inner cavity of the second joint; A first developing member and a second developing member are arranged at intervals on the guide tube, and the first developing member and the second developing member can be developed under X-rays; The first expansion body and the second expansion body are both connected to the outer wall of the guide tube, and the first expansion body covers the first developing member, and the second expansion body covers the second developing member. The inner cavities of the first expansion body and the second expansion body are both connected to the second channel, and the first expansion body and the second expansion body are configured to be able to be inflated with air or water through the second channel.

2. The digestive fluid isolation conduit assembly according to claim 1, characterized in that: The first developing member is located at one end of the first expansion body close to the second expansion body, and the second developing member is located at one end of the second expansion body close to the first expansion body.

3. The digestive fluid isolation conduit assembly according to claim 1, characterized in that: The first developing member and / or the second developing member is made of metal material.

4. The digestive fluid isolation conduit assembly according to claim 1, characterized in that: The digestive fluid isolation conduit assembly further includes a long developing strip, wherein the developing strip is located between an end of the first expansion body away from the second expansion body and an end of the second expansion body away from the first expansion body.

5. The digestive fluid isolation conduit assembly according to claim 1, characterized in that: The digestive fluid isolation conduit assembly further includes an adsorption member connected to the side wall of the guide tube and located between the first expansion body and the second expansion body.

6. The digestive fluid isolation conduit assembly according to claim 5, characterized in that: The digestive fluid isolation conduit assembly also includes a third developing member, which can be developed under X-rays. The third developing member is arranged on the guide tube, and the adsorption member covers the third developing member.

7. The digestive fluid isolation conduit assembly according to claim 5, characterized in that: A third joint is provided at one end of the guide tube away from the outlet end, and a third channel is provided in the guide tube, the third channel is connected to the inner cavity of the third joint, and a first opening is provided on the side wall of the guide tube between the first expansion body and the second expansion body, the first opening is connected to the third channel, and the adsorption member covers the first opening.

8. The digestive fluid isolation conduit assembly according to claim 7, characterized in that: A negative pressure component is provided at one end of the flow guide tube away from the outlet end, and the inner cavity of the negative pressure component is communicated with the inner cavity of the third joint.

9. The digestive fluid isolation conduit assembly according to claim 1, characterized in that: The first expansion body is located on a side of the flow guide tube close to the outlet end, the second expansion body is located on a side of the flow guide tube away from the outlet end, a second opening connected to the first channel is provided on the side wall of the flow guide tube, and the second opening is located on a side of the second expansion body away from the first expansion body.

10. The digestive fluid isolation conduit assembly according to claim 1, characterized in that: A pressure gauge is provided at the inlet of the second channel, and the pressure gauge is configured to detect the pressure in the second channel.

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