Single-balloon catheter

Abstract

The utility model discloses a single-balloon catheter which solves the problem that in the prior art, the leakage state of a balloon is inconvenient to observe. The device comprises a supporting tube which is fixed in an intestinal tract and is positioned at the upstream of an anastomotic stoma of the intestinal tract, a double-cavity catheter which is arranged in the supporting tube and is used for discharging contents in the intestinal tract, a sealing balloon which is hermetically sleeved on the double-cavity catheter and is sealed with the inner wall of the supporting tube after being inflated, and a connecting joint which is arranged on the double-cavity catheter, the conveying mechanism is connected with the double-cavity catheter, communicated with the sealing balloon through the double-cavity catheter and used for conveying fluid media, and the indicating balloon is arranged on the conveying mechanism and communicated with the sealing balloon through the conveying mechanism. The fluid medium can be conveyed to the sealing balloon and the indicating balloon through the conveying mechanism, the indicating balloon and the sealing balloon are communicated through the conveying mechanism, and whether the sealing balloon exists or not is judged by observing the dry and flat state of the indicating balloon.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a single balloon catheter. Background Technology

[0002] After resection of intestinal lesions, the two segments of intestine need to be anastomosed and connected. Intestinal function is restored after the anastomosis heals. The intestine contains chyme, digestive enzymes, intestinal mucus, and various bacteria and microorganisms. If the contents of the intestine are not managed, excessive accumulation or rapid passage of contents through the anastomosis before healing can damage the anastomosis. Pathogenic bacteria can proliferate, leading to anastomotic infection, hindering healing, causing anastomotic leakage, or even leakage of intestinal contents resulting in severe abdominal and pelvic infections, threatening the patient's life. The incidence of anastomotic leakage varies depending on the location of the anastomosis, the anastomosis method, the technique, and the patient's underlying diseases. The incidence of anastomotic leakage after rectal surgery can be as high as approximately 10%. Therefore, during the anastomotic recovery process, the flow of intestinal contents needs to be managed to prevent adverse effects on anastomotic healing. To address the aforementioned issues, current technology involves placing a biodegradable support tube into the intestine anterior to the anastomosis to block intestinal contents and prevent them from flowing towards the anastomosis. A drainage tube is then used to drain the blocked intestinal contents out of the body, thus protecting the anastomosis. After the anastomosis heals, the drainage tube is removed, leaving the support tube to degrade naturally within the intestine, eliminating the need for a second surgery to restore the stoma. This approach reduces patient suffering and effectively prevents excessive consumption of medical resources.

[0003] Traditional drainage tubes, when draining intestinal contents, are fixed inside a support tube by a balloon. The balloon is in contact with the intestinal contents, making it susceptible to corrosion. This corrosion can lead to leakage, reducing the seal between the balloon and the inner wall of the support tube. Consequently, during drainage, intestinal contents can leak along the outer wall of the drainage tube, contaminating the anastomosis. Because the balloon is located inside the support tube, medical staff can only rely on their experience to determine if there is a leak. Due to significant individual differences, this makes it difficult for medical staff to accurately determine if the balloon is ruptured. Furthermore, during drainage, intestinal contents can easily clog the tube, preventing timely drainage of intestinal contents. Utility Model Content

[0004] This invention provides a single balloon catheter to at least solve some of the aforementioned technical problems.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A single balloon catheter includes a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter disposed in the support tube for the discharge of intestinal contents, a sealing balloon sealed on the double-lumen catheter and sealed to the inner wall of the support tube after inflation, a connecting connector mounted on the double-lumen catheter, a delivery mechanism connected to the double-lumen catheter and communicating with the sealing balloon through the double-lumen catheter for the delivery of fluid media, and an indicator balloon disposed on the delivery mechanism and communicating with the sealing balloon through the delivery mechanism.

[0007] Furthermore, the double-lumen catheter has a drainage lumen and a media delivery lumen that are not interconnected. The double-lumen catheter has a drainage hole located upstream of the support tube and connected to the drainage lumen. The two ends of the media delivery lumen are respectively sealed to the sealing balloon and the delivery mechanism.

[0008] Furthermore, the delivery mechanism includes a delivery pipe with one end sealed and connected to the medium delivery cavity and the other end connected to a Luer connector, and an indicator balloon is installed on the delivery pipe and sealed and connected to the delivery pipe.

[0009] Furthermore, a third hole is provided on the delivery pipe, and the third hole is sealed and connected to the inside of the indicator balloon.

[0010] Furthermore, the double-lumen catheter has a first hole and a second hole that are respectively connected to the medium delivery lumen. The first hole is connected to the sealing balloon, and the second hole is sealed and connected to the delivery mechanism.

[0011] Furthermore, the connecting joint includes a connecting tube and a guide tube integrally formed with the connecting tube; the inner wall of the connecting tube is provided with an insert groove adapted to the double-lumen conduit, and the double-lumen conduit is sealed and inserted in the insert groove.

[0012] Furthermore, the guide tube is provided with a connecting strip, and a cap adapted to the guide tube for sealing the guide tube is connected to the connecting strip. The cap is provided with a pressure port, and a plug for sealing and blocking the pressure port is provided on the cap.

[0013] Furthermore, the guide tube is frustum-shaped, with its small-diameter end connected to the connecting tube and both having the same inner diameter. The sealing cap is attached to the large-diameter end of the guide tube.

[0014] Furthermore, the connecting pipe is provided with a conduit adapted to the conveying mechanism, the conveying mechanism is sealed inside the conduit, and the conveying mechanism passes through the conduit and is sealed to the medium conveying pipe cavity.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] This utility model has a simple structure, a scientific and reasonable design, and is easy to use. Its delivery mechanism can deliver fluid media to the sealing balloon and the indicator balloon. The sealing balloon expands and seals against the inner wall of the support tube, thus fixing the double-lumen conduit inside the support tube. The indicator balloon is connected to the sealing balloon through the delivery mechanism, allowing the fluid media to flow between the two. Specifically, the double-lumen conduit is placed inside the support tube, and the delivery mechanism delivers fluid to the sealing balloon and the indicator balloon. When the sealing balloon expands and seals against the inner wall of the support tube, the delivery mechanism stops delivering the fluid media. Over time, by observing whether the volume of the indicator balloon changes, if the volume of the indicator balloon shrinks, it indicates a leak in the sealing balloon, thus facilitating the determination of whether there is a leak in the sealing balloon.

[0017] This utility model relates to a double-lumen catheter capable of draining intestinal contents. The double-lumen catheter is equipped with a sealing balloon that is sealed to a support tube. When inflated, the sealing balloon contacts the inner wall of the support tube, sealing it and fixing the double-lumen catheter 1 inside the support tube. This allows intestinal contents to drain through the double-lumen catheter, preventing infection of the anastomosis site. A connecting connector is also installed on the double-lumen catheter. When the double-lumen catheter is blocked by intestinal contents, pressure can be applied to the connecting connector using a syringe to clear the blockage. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a cross-sectional view of the present invention.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0021] Figure 4 This is a cross-sectional view of the connector of this utility model.

[0022] Figure 5 This is a cross-sectional view of the connecting cylinder of this utility model.

[0023] Figure 6 This is a cross-sectional view of the double-lumen catheter of this utility model.

[0024] Figure 7 This is a cross-sectional view of the double-lumen catheter of this utility model.

[0025] The names corresponding to the reference numerals in the attached figures are as follows:

[0026] 1. Double-lumen conduit; 2. Connecting connector; 3. Delivery mechanism; 4. Drainage lumen; 5. Media delivery lumen; 6. First hole; 7. Second hole; 8. Sealing balloon; 10. Connecting strap; 11. Indicating balloon; 12. Cap; 13. Plug; 14. Conduit; 15. Drainage hole; 16. Delivery pipe; 17. Luer connector; 18. Pressure port; 19. Third hole; 20. Connecting pipe; 21. Guide tube; 22. Insertion groove. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] Example 1.

[0031] like Figure 1-7As shown, the present invention provides a single balloon catheter, including a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter 1 disposed in the support tube for the discharge of intestinal contents, a sealing balloon 8 sealed on the double-lumen catheter 1 and sealed to the inner wall of the support tube after inflation, a connecting connector 2 installed on the double-lumen catheter 1, a delivery mechanism 3 connected to the double-lumen catheter 1 and communicating with the sealing balloon 8 through the double-lumen catheter 1 for the delivery of fluid media, and an indicator balloon 11 disposed on the delivery mechanism 3 and communicating with the sealing balloon 8 through the delivery mechanism 3.

[0032] The conveying mechanism 3 of this utility model can convey fluid medium to the sealing balloon 8 and the indicating balloon 11. The sealing balloon 8 expands and seals with the inner wall of the support tube, thereby fixing the double-lumen conduit 1 in the support tube. The indicating balloon 11 is connected to the sealing balloon 8 through the conveying mechanism 3, so that the fluid medium can flow between the sealing balloon 8 and the indicating balloon 11. Specifically, the double-lumen conduit 1 is placed in the support tube, and the fluid is conveyed to the sealing balloon 8 and the indicating balloon 11 through the conveying mechanism 3. When the sealing balloon 8 expands and seals with the inner wall of the support tube, the conveying mechanism 3 stops conveying the fluid medium. Over time, by observing whether there is a change in the volume of the indicating balloon 11, if the volume of the indicating balloon 11 shrinks, it indicates that there is a leak in the sealing balloon 8, thus facilitating the judgment of whether there is a leak in the sealing balloon 8.

[0033] This utility model's double-lumen catheter 1 can drain intestinal contents. Simultaneously, the double-lumen catheter 1 is equipped with a sealing balloon 8 that is sealed to a support tube. After inflation, the sealing balloon 8 contacts the inner wall of the support tube, thereby sealing the support tube and fixing the double-lumen catheter 1 inside the support tube. This allows intestinal contents to drain through the double-lumen catheter 1, preventing intestinal contents from passing through the anastomosis and infecting it. Furthermore, a connecting connector 2 is installed on the double-lumen catheter 1. When the double-lumen catheter 1 is blocked by intestinal contents, pressure can be applied to the connecting connector 2 using a syringe to clear the blockage.

[0034] The sealing balloon 8 of this invention is sealed and bonded to the double-lumen catheter 1 with corrosion-resistant medical sealant.

[0035] This invention features a support tube whose outer wall seals against the inner wall of the intestine to prevent intestinal contents from flowing through the intestinal anastomosis. The preferred fluid medium is purified water, an inert gas, or air. The sealing balloon 8 is made of medical-grade TPU material.

[0036] Example 2.

[0037] like Figure 1-7As shown, the present invention provides a single balloon catheter, including a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter 1 disposed in the support tube for the discharge of intestinal contents, a sealing balloon 8 sealed on the double-lumen catheter 1 and sealed to the inner wall of the support tube after inflation, a connecting connector 2 installed on the double-lumen catheter 1, a delivery mechanism 3 connected to the double-lumen catheter 1 and communicating with the sealing balloon 8 through the double-lumen catheter 1 for the delivery of fluid media, and an indicator balloon 11 disposed on the delivery mechanism 3 and communicating with the sealing balloon 8 through the delivery mechanism 3.

[0038] The double-lumen catheter 1 has a drainage lumen 4 and a medium delivery lumen 5 that are not connected to each other. The double-lumen catheter 1 has a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The two ends of the medium delivery lumen 5 are respectively sealed and connected to the sealing balloon 8 and the delivery mechanism 3.

[0039] This embodiment 2 provides a more preferred structure for the double-lumen catheter 1 based on embodiment 1. Specifically, the double-lumen catheter 1 is provided with a drainage lumen 4 and a medium delivery lumen 5 that are not interconnected. The double-lumen catheter 1 is provided with a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The two ends of the medium delivery lumen 5 are respectively sealed and connected to the sealing balloon 8 and the delivery mechanism 3.

[0040] In this invention, both the drainage lumen 4 and the media delivery lumen 5 are located within the double-lumen catheter 1, and the drainage lumen 4 and the media delivery lumen 5 are not connected to each other. The double-lumen catheter 1 is provided with a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The drainage hole 15 facilitates the drainage of intestinal contents, allowing them to enter the drainage lumen 4 through the drainage hole 15 and then be discharged from the body through the drainage lumen 4, thereby avoiding contamination of the anastomosis by intestinal contents.

[0041] The media delivery tube 5 of this utility model is sealed at both ends to the sealing balloon 8 and the delivery mechanism 3, respectively. The delivery mechanism 3 delivers the fluid medium to the sealing balloon 8 through the media delivery tube 5, causing the sealing balloon 8 to expand and seal the outer wall of the sealing balloon 8 with the inner wall of the support tube, thereby facilitating the fixation of the double-lumen catheter 1. At the same time, when it is necessary to remove the double-lumen catheter 1, the fluid medium in the sealing balloon 8 is sucked out by the delivery mechanism 3, thereby separating the outer wall of the sealing balloon 8 from the inner wall of the support tube, and thus removing the double-lumen catheter 1 from the body.

[0042] Example 3.

[0043] like Figure 1-7As shown, the present invention provides a single balloon catheter, including a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter 1 disposed in the support tube for the discharge of intestinal contents, a sealing balloon 8 sealed on the double-lumen catheter 1 and sealed to the inner wall of the support tube after inflation, a connecting connector 2 installed on the double-lumen catheter 1, a delivery mechanism 3 connected to the double-lumen catheter 1 and communicating with the sealing balloon 8 through the double-lumen catheter 1 for the delivery of fluid media, and an indicator balloon 11 disposed on the delivery mechanism 3 and communicating with the sealing balloon 8 through the delivery mechanism 3.

[0044] The double-lumen catheter 1 has a drainage lumen 4 and a medium delivery lumen 5 that are not connected to each other. The double-lumen catheter 1 has a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The two ends of the medium delivery lumen 5 are respectively sealed and connected to the sealing balloon 8 and the delivery mechanism 3.

[0045] The conveying mechanism 3 includes a conveying pipe 16 with one end sealed and connected to the medium conveying cavity 5 and the other end connected to a Luer connector 17. The indicating balloon 11 is installed on the conveying pipe 16 and is sealed and connected to the conveying pipe 16.

[0046] This embodiment 3 provides a more preferred structure for the conveying mechanism 3 based on embodiment 2. Specifically, the conveying mechanism 3 includes a conveying pipe 16 with one end sealed and connected to the medium conveying cavity 5 and the other end connected to a Luer connector 17. The indicating balloon 11 is installed on the conveying pipe 16 and is sealed and connected to the conveying pipe 16.

[0047] The present invention relates to a delivery tube 16, one end of which is sealed and connected to the medium delivery tube cavity 5, and the other end of which is connected to a Luer connector 17. Simultaneously, an indicator balloon 11 is installed on the delivery tube 16 and sealed and connected to it. When delivering the medium, by filling the syringe with fluid medium and connecting the syringe to the Luer connector 17, pushing the syringe, the fluid medium in the syringe passes through the Luer connector 17, the delivery tube 16, and the medium delivery tube cavity 5 into the indicator balloon 11 and the sealing balloon 8. This facilitates the expansion of the indicator balloon 11 and the sealing balloon 8, and the outer wall of the sealing balloon 8 seals against the inner wall of the support tube after expansion.

[0048] Example 4.

[0049] like Figure 1-7As shown, the present invention provides a single balloon catheter, including a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter 1 disposed in the support tube for the discharge of intestinal contents, a sealing balloon 8 sealed on the double-lumen catheter 1 and sealed to the inner wall of the support tube after inflation, a connecting connector 2 installed on the double-lumen catheter 1, a delivery mechanism 3 connected to the double-lumen catheter 1 and communicating with the sealing balloon 8 through the double-lumen catheter 1 for the delivery of fluid media, and an indicator balloon 11 disposed on the delivery mechanism 3 and communicating with the sealing balloon 8 through the delivery mechanism 3.

[0050] The double-lumen catheter 1 has a drainage lumen 4 and a medium delivery lumen 5 that are not connected to each other. The double-lumen catheter 1 has a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The two ends of the medium delivery lumen 5 are respectively sealed and connected to the sealing balloon 8 and the delivery mechanism 3.

[0051] The conveying mechanism 3 includes a conveying pipe 16 with one end sealed and connected to the medium conveying cavity 5 and the other end connected to a Luer connector 17. The indicating balloon 11 is installed on the conveying pipe 16 and is sealed and connected to the conveying pipe 16.

[0052] A third hole 19 is provided on the delivery pipe 16, and the third hole 19 is sealed and connected to the indicator balloon 11.

[0053] Based on Example 3, Example 4 provides a more specific structure for the delivery tube 16, specifically: the delivery tube 16 has a third hole 19, which is sealed and connected to the indicator balloon 11.

[0054] When the conveying mechanism 3 of this utility model conveys the fluid medium through the conveying pipe 16, the fluid medium enters the indicating balloon 11 through the third hole 19. The third hole 19 allows the fluid medium, which is easy to inject into the syringe, to be pushed into the indicating balloon 11. At the same time, when the sealing balloon 8 leaks, the fluid medium in the indicating balloon 11 can enter the conveying pipe 16, the medium conveying pipe cavity 5 and the sealing balloon 8 through the third hole 19, thereby causing the indicating balloon 11 to flatten, thus making it easier to judge whether there is a leak in the sealing balloon 8.

[0055] Example 5.

[0056] like Figure 1-7As shown, the present invention provides a single balloon catheter, including a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter 1 disposed in the support tube for the discharge of intestinal contents, a sealing balloon 8 sealed on the double-lumen catheter 1 and sealed to the inner wall of the support tube after inflation, a connecting connector 2 installed on the double-lumen catheter 1, a delivery mechanism 3 connected to the double-lumen catheter 1 and communicating with the sealing balloon 8 through the double-lumen catheter 1 for the delivery of fluid media, and an indicator balloon 11 disposed on the delivery mechanism 3 and communicating with the sealing balloon 8 through the delivery mechanism 3.

[0057] The double-lumen catheter 1 has a drainage lumen 4 and a medium delivery lumen 5 that are not connected to each other. The double-lumen catheter 1 has a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The two ends of the medium delivery lumen 5 are respectively sealed and connected to the sealing balloon 8 and the delivery mechanism 3.

[0058] The double-lumen conduit 1 has a first hole 6 and a second hole 7 that are respectively connected to the medium delivery lumen 5. The first hole 6 is connected to the sealing balloon 8, and the second hole 7 is sealed and connected to the delivery mechanism 3.

[0059] Based on Example 2, Example 5 provides a more preferred structure for the double-lumen catheter 1. Specifically, the double-lumen catheter 1 has a first hole 6 and a second hole 7 that are respectively connected to the medium delivery lumen 5. The first hole 6 is connected to the sealing balloon 8, and the second hole 7 is sealed and connected to the delivery mechanism 3.

[0060] The present invention has a double-lumen catheter 1 with a first hole 6 and a second hole 7 respectively connected to the medium delivery lumen 5. The first hole 6 is connected to the sealing balloon 8, and the second hole 7 is sealed and connected to the delivery mechanism 3. When the delivery mechanism 3 delivers the fluid medium, the fluid medium enters the indicator balloon 11 through the third hole 19, enters the medium delivery lumen 5 through the second hole 7, and enters the sealing balloon 8 through the first hole 6, thereby facilitating the entry of the fluid medium into the sealing balloon 8.

[0061] Example 6.

[0062] like Figure 1-7 As shown, the present invention provides a single balloon catheter, including a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter 1 disposed in the support tube for the discharge of intestinal contents, a sealing balloon 8 sealed on the double-lumen catheter 1 and sealed to the inner wall of the support tube after inflation, a connecting connector 2 installed on the double-lumen catheter 1, a delivery mechanism 3 connected to the double-lumen catheter 1 and communicating with the sealing balloon 8 through the double-lumen catheter 1 for the delivery of fluid media, and an indicator balloon 11 disposed on the delivery mechanism 3 and communicating with the sealing balloon 8 through the delivery mechanism 3.

[0063] The double-lumen catheter 1 has a drainage lumen 4 and a medium delivery lumen 5 that are not connected to each other. The double-lumen catheter 1 has a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The two ends of the medium delivery lumen 5 are respectively sealed and connected to the sealing balloon 8 and the delivery mechanism 3.

[0064] The connecting joint 2 includes a connecting tube 20 and a guide tube 21 integrally formed with the connecting tube 20; the inner wall of the connecting tube 20 is provided with an insert groove 22 adapted to the double lumen conduit 1, and the double lumen conduit 1 is sealed and inserted in the insert groove 22.

[0065] Based on Example 2, Example 6 provides a more preferred structure for the connector 2, specifically: the connector 2 includes a connecting pipe 20 and a guide pipe 21 integrally formed with the connecting pipe 20; the inner wall of the connecting pipe 20 is provided with an insert groove 22 adapted to the double-lumen conduit 1, and the double-lumen conduit 1 is sealed and inserted in the insert groove 22.

[0066] The connecting tube 20 and the guide tube 21 of this utility model are integrally formed. The inner wall of the connecting tube 20 is provided with an insert groove 22 that is adapted to the double-lumen conduit 1. The double-lumen conduit 1 is sealed and inserted in the insert groove 22. The insert groove 22 can facilitate the connection between the double-lumen conduit 1 and the connecting tube 20.

[0067] Example 7.

[0068] like Figure 1-7 As shown, the present invention provides a single balloon catheter, including a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter 1 disposed in the support tube for the discharge of intestinal contents, a sealing balloon 8 sealed on the double-lumen catheter 1 and sealed to the inner wall of the support tube after inflation, a connecting connector 2 installed on the double-lumen catheter 1, a delivery mechanism 3 connected to the double-lumen catheter 1 and communicating with the sealing balloon 8 through the double-lumen catheter 1 for the delivery of fluid media, and an indicator balloon 11 disposed on the delivery mechanism 3 and communicating with the sealing balloon 8 through the delivery mechanism 3.

[0069] The double-lumen catheter 1 has a drainage lumen 4 and a medium delivery lumen 5 that are not connected to each other. The double-lumen catheter 1 has a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The two ends of the medium delivery lumen 5 are respectively sealed and connected to the sealing balloon 8 and the delivery mechanism 3.

[0070] The connecting joint 2 includes a connecting tube 20 and a guide tube 21 integrally formed with the connecting tube 20; the inner wall of the connecting tube 20 is provided with an insert groove 22 adapted to the double lumen conduit 1, and the double lumen conduit 1 is sealed and inserted in the insert groove 22.

[0071] The guide tube 21 is provided with a connecting strip 10, and a cap 12 adapted to the guide tube 21 for sealing the guide tube 21 is connected to the connecting strip 10. The cap 12 is provided with a pressure port 18 and a plug 13 for sealing and blocking the pressure port 18.

[0072] Based on Example 6, Example 7 provides a more preferred structure for the guide tube 21. Specifically, the guide tube 21 is provided with a connecting strip 10, and a cap 12 adapted to the guide tube 21 for sealing the guide tube 21 is connected to the connecting strip 10. The cap 12 is provided with a pressure port 18 and a plug 13 for sealing and blocking the pressure port 18.

[0073] In this invention, a connecting band 10 is disposed on a guide tube 21, and a cap 12 is disposed on the connecting band 10. The cap 12 is adapted to the guide tube 21 to seal the guide tube 21. The cap 12 is provided with a pressure port 18 and a plug 13 for sealing the pressure port 18. Specifically, when the drainage cavity 4 is blocked, the cap 12 is sealed and connected to the guide tube 21. At the same time, the pressure port 18 on the cap 12 is sealed by the plug 13. The needle of the syringe is inserted into the guide tube 21, and the syringe is pulled to increase the pressure in the guide tube 21, thereby aspirating the intestinal contents blocked in the drainage cavity 4, thus preventing the intestinal contents from blocking the drainage cavity 4. The plug 13 of this invention is preferably made of rubber or silicone material.

[0074] Example 8.

[0075] like Figure 1-7 As shown, the present invention provides a single balloon catheter, including a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter 1 disposed in the support tube for the discharge of intestinal contents, a sealing balloon 8 sealed on the double-lumen catheter 1 and sealed to the inner wall of the support tube after inflation, a connecting connector 2 installed on the double-lumen catheter 1, a delivery mechanism 3 connected to the double-lumen catheter 1 and communicating with the sealing balloon 8 through the double-lumen catheter 1 for the delivery of fluid media, and an indicator balloon 11 disposed on the delivery mechanism 3 and communicating with the sealing balloon 8 through the delivery mechanism 3.

[0076] The double-lumen catheter 1 has a drainage lumen 4 and a medium delivery lumen 5 that are not connected to each other. The double-lumen catheter 1 has a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The two ends of the medium delivery lumen 5 are respectively sealed and connected to the sealing balloon 8 and the delivery mechanism 3.

[0077] The connecting joint 2 includes a connecting tube 20 and a guide tube 21 integrally formed with the connecting tube 20; the inner wall of the connecting tube 20 is provided with an insert groove 22 adapted to the double lumen conduit 1, and the double lumen conduit 1 is sealed and inserted in the insert groove 22.

[0078] The guide tube 21 is provided with a connecting strip 10, and a cap 12 adapted to the guide tube 21 for sealing the guide tube 21 is connected to the connecting strip 10. The cap 12 is provided with a pressure port 18 and a plug 13 for sealing and blocking the pressure port 18.

[0079] The guide tube 21 is frustum shaped. The small diameter end of the guide tube 21 is connected to the connecting tube 20 and the inner diameters of the two are the same. The sealing cap 12 is attached to the large diameter end of the guide tube 21.

[0080] Based on Example 7, Example 8 provides a more preferred structure for the guide tube 21, specifically: the guide tube 21 is frustum-shaped, the small diameter end of the guide tube 21 is connected to the connecting tube 20 and the inner diameters of the two are the same, and the sealing cap 12 is attached to the large diameter end of the guide tube 21.

[0081] The guide tube 21 of this utility model is frustoconical in shape. The small diameter end of the guide tube 21 is connected to the connecting tube 20 and the inner diameters of the two are the same. This allows the intestinal contents in the double-lumen catheter 1 to be smoothly discharged out of the body through the guide tube 21 after connection. At the same time, the sealing cap 12 is attached to the large diameter end of the guide tube 21, which can facilitate sealing of the large diameter end of the guide tube 21.

[0082] Example 9.

[0083] like Figure 1-7 As shown, the present invention provides a single balloon catheter, including a support tube fixed in the intestine and located upstream of the intestinal anastomosis, a double-lumen catheter 1 disposed in the support tube for the discharge of intestinal contents, a sealing balloon 8 sealed on the double-lumen catheter 1 and sealed to the inner wall of the support tube after inflation, a connecting connector 2 installed on the double-lumen catheter 1, a delivery mechanism 3 connected to the double-lumen catheter 1 and communicating with the sealing balloon 8 through the double-lumen catheter 1 for the delivery of fluid media, and an indicator balloon 11 disposed on the delivery mechanism 3 and communicating with the sealing balloon 8 through the delivery mechanism 3.

[0084] The double-lumen catheter 1 has a drainage lumen 4 and a medium delivery lumen 5 that are not connected to each other. The double-lumen catheter 1 has a drainage hole 15 located upstream of the support tube and connected to the drainage lumen 4. The two ends of the medium delivery lumen 5 are respectively sealed and connected to the sealing balloon 8 and the delivery mechanism 3.

[0085] The connecting joint 2 includes a connecting tube 20 and a guide tube 21 integrally formed with the connecting tube 20; the inner wall of the connecting tube 20 is provided with an insert groove 22 adapted to the double lumen conduit 1, and the double lumen conduit 1 is sealed and inserted in the insert groove 22.

[0086] The connecting pipe 20 is provided with a cable pipe 14 adapted to the conveying mechanism 3. The conveying mechanism 3 is sealed inside the cable pipe 14 and passes through the cable pipe 14 and is sealed to the medium conveying cavity 5.

[0087] Example 9 provides a more preferred structure for the connecting pipe 20 based on Example 6. Specifically, the connecting pipe 20 is provided with a cable conduit 14 adapted to the conveying mechanism 3. The conveying mechanism 3 is sealed inside the cable conduit 14 and passes through the cable conduit 14 and is sealed to the medium conveying cavity 5.

[0088] The present invention has a cable conduit 14 installed in the connecting pipe 20 and connected to the medium conveying cavity 5 through the second hole 7. The cable conduit 14 is adapted to the conveying pipe 16. The conveying pipe 16 passes through the cable conduit 14 and is sealed to the medium conveying cavity 5, thereby facilitating the fluid medium to enter the medium conveying cavity 5 through the conveying pipe 16.

[0089] The support tube, syringe, and Luer connector 17 used in this invention are all existing technologies and can be purchased and used directly on the market. Therefore, the structure and principle of the support tube, syringe, and Luer connector 17 will not be described in detail here.

[0090] Finally, it should be noted that the above embodiments are merely preferred embodiments of this utility model used to illustrate the technical solutions of this utility model, and are not intended to limit it, nor are they intended to limit the patent scope of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model. That is to say, any changes or refinements made to the main design concept and spirit of this utility model that are not of substantial significance, but whose technical problems are still consistent with those of this utility model, should be included within the protection scope of this utility model. In addition, the direct or indirect application of the technical solutions of this utility model to other related technical fields are similarly included within the patent protection scope of this utility model.

Claims

1. A single balloon catheter, comprising a support tube fixed within the intestine and located upstream of the intestinal anastomosis, characterized in that, It also includes a double-lumen catheter (1) disposed in the support tube for the discharge of intestinal contents, a sealing balloon (8) sealed on the double-lumen catheter (1) and sealed to the inner wall of the support tube after inflation, a connecting joint (2) installed on the double-lumen catheter (1), a delivery mechanism (3) connected to the double-lumen catheter (1) and connected to the sealing balloon (8) through the double-lumen catheter (1) for the delivery of fluid media, and an indicator balloon (11) disposed on the delivery mechanism (3) and connected to the sealing balloon (8) through the delivery mechanism (3).

2. The single balloon catheter according to claim 1, characterized in that, The double-lumen catheter (1) has a drainage lumen (4) and a medium delivery lumen (5) that are not connected to each other. The double-lumen catheter (1) has a drainage hole (15) located upstream of the support tube and connected to the drainage lumen (4). The two ends of the medium delivery lumen (5) are respectively sealed and connected to the sealing balloon (8) and the delivery mechanism (3).

3. A single balloon catheter according to claim 2, characterized in that, The conveying mechanism (3) includes a conveying pipe (16) with one end sealed and connected to the medium conveying cavity (5) and the other end connected to a Luer connector (17). An indicator balloon (11) is installed on the conveying pipe (16) and is sealed and connected to the conveying pipe (16).

4. A single balloon catheter according to claim 3, characterized in that, A third hole (19) is provided on the delivery pipe (16), and the third hole (19) is sealed and connected to the indicator balloon (11).

5. A single balloon catheter according to claim 2, characterized in that, The double-lumen catheter (1) has a first hole (6) and a second hole (7) that are respectively connected to the medium delivery lumen (5). The first hole (6) is connected to the sealing balloon (8), and the second hole (7) is sealed and connected to the delivery mechanism (3).

6. A single balloon catheter according to claim 2, characterized in that, The connecting joint (2) includes a connecting tube (20) and a guide tube (21) integrally formed with the connecting tube (20); the inner wall of the connecting tube (20) is provided with an insert groove (22) adapted to the double-lumen conduit (1), and the double-lumen conduit (1) is sealed and inserted in the insert groove (22).

7. A single balloon catheter according to claim 6, characterized in that, The guide tube (21) is provided with a connecting strip (10), and the connecting strip (10) is connected with a cap (12) that is compatible with the guide tube (21) for sealing the guide tube (21). The cap (12) is provided with a pressure port (18), and the cap (12) is provided with a plug (13) for sealing and blocking the pressure port (18).

8. A single balloon catheter according to claim 7, characterized in that, The guide tube (21) is frustum shaped. The small diameter end of the guide tube (21) is connected to the connecting tube (20) and the inner diameters of the two are the same. The sealing cap (12) is attached to the large diameter end of the guide tube (21).

9. A single balloon catheter according to claim 6, characterized in that, The connecting pipe (20) is provided with a cable pipe (14) adapted to the conveying mechanism (3). The conveying mechanism (3) is sealed inside the cable pipe (14). The conveying mechanism (3) passes through the cable pipe (14) and is sealed to the medium conveying cavity (5).

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