Blocking type fistulization balloon catheter

Abstract

The utility model discloses a blocking type fistulization balloon catheter, which relates to the technical field of medical instruments and comprises a balloon, a catheter body, a drainage head, an enteral pressure sensor and a flushing tube. The drainage head is formed at one end of the tube body; the balloon is fixedly arranged on the periphery of the tube body in a sleeving mode and located at the end, close to the drainage head, of the tube body. The enteral pressure sensor is arranged on the tube body and is positioned between the balloon and the drainage head; and the flushing pipe is arranged in the pipe body. According to the utility model, the intestinal pressure is detected through the intestinal pressure, so that the intestinal pressure can be intuitively reflected; the catheter body is flushed through the flushing pipe, and the catheter can be effectively prevented from being blocked in the liquid discharging process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a blocking type fistula balloon catheter. Background Art

[0002] Colorectal cancer is one of the most common malignant tumors of the digestive tract, characterized by high morbidity and mortality. Currently, surgical resection is the most effective treatment option for colorectal cancer. Clinically, after resection of a colorectal tumor, the proximal and distal colon stumps must be anastomosed. Anastomotic fistula is a common and serious complication of rectal cancer surgery, with an incidence ranging from 2.4% to 15.9%, and the mortality rate after anastomotic fistula can be as high as 16%. Medical institutions both domestically and internationally routinely use colon or terminal ileostomy to prevent anastomotic fistulas. This active fistula method prevents or reduces anastomotic fistulas by preemptively draining intestinal contents away from the anastomosis. However, this method also increases surgical trauma, reduces the patient's quality of life, and requires a secondary surgery to restore the bowel, which increases the complication rate.

[0003] In recent years, scientists have developed a procedure that works similarly to preventive ostomy: ileal tube placement. During the procedure, a balloon-equipped drainage tube is used to block the intestinal lumen and divert intestinal contents. However, there are currently no drainage tubes specifically designed for this procedure on the market. Foley double-lumen catheters are often used as surgical drainage tubes, but their narrow lumen is prone to clogging. Some hospitals also currently use endotracheal tubes as surgical drainage tubes, but their rigid shape makes them difficult to bend and difficult to care for.

[0004] Therefore, designing a drainage tube suitable for ileal tube fistula surgery is one of the problems that need to be solved urgently in this field. Utility Model Content

[0005] The purpose of the utility model is to provide a blocking fistula balloon catheter to solve the deficiencies in the prior art. It detects intestinal pressure through intestinal pressure, which is conducive to intuitively reflecting the pressure in the intestine; and flushes the tube body through a flushing tube, which can effectively avoid catheter blockage during the drainage process.

[0006] The utility model provides a blocking type fistula balloon catheter, which comprises a balloon, a tube body, a drainage head, an intestinal pressure sensor and a flushing tube;

[0007] The drainage head is formed at one end of the tube body; the balloon is fixedly sleeved on the outer periphery of the tube body and is located at one end of the tube body close to the drainage head;

[0008] The intestinal pressure sensor is mounted on the tube body and located between the balloon and the drainage head;

[0009] The flushing tube is arranged in the tube body.

[0010] The present invention sets a balloon so that the balloon fits against the intestinal wall, and uses a drainage head to lead the intestinal fluid out of the body through the tube body, thereby blocking the intestinal fluid from flowing through the anastomosis. This can reduce or even avoid the occurrence of severe abdominal and pelvic infections, abscesses, septic shock and other conditions caused by anastomotic fistulas, and avoid secondary surgery. In addition, by setting a flushing tube, it is ensured that the catheter can be prevented from being blocked during the process of leading out the intestinal fluid. The intestinal pressure sensor can detect the pressure in the intestine and transmit the pressure value to an external device. Medical staff can judge whether it is necessary to help the patient drain the intestinal fluid out of the body based on the pressure value, avoiding medical staff draining the patient based on experience, resulting in drainage when there is less intestinal fluid and forgetting to drain when there is more intestinal fluid. This improves the control accuracy of drainage timing, reduces the labor intensity of medical staff, and also alleviates the pain of patients caused by untimely drainage.

[0011] The blocking fistula balloon catheter as described above, wherein optionally: an intestinal wall pressure sensor is provided on the outer wall of the balloon.

[0012] The intestinal wall pressure sensor can detect the pressure of the intestinal wall in real time, and the detection data can be transmitted to external equipment. Medical staff can judge whether the balloon is close to the intestinal wall without affecting the blood circulation of the intestinal wall by checking the detection data.

[0013] As described above, the blocking fistula balloon catheter, wherein optionally: a flushing interface and a filling interface are provided on the side wall of the tube body away from the balloon; the flushing interface is connected to the flushing tube; the filling interface is connected to the balloon through a pipeline.

[0014] As described above, the blocking fistula balloon catheter may optionally be provided with a flushing tube arranged along the inner wall of the tube body, and a spray hole communicating with the tube body is provided on the side wall of the flushing tube.

[0015] As described above, the blocking fistula balloon catheter, wherein, optionally, the intestinal pressure sensor is connected to a first pressure sensor connector located outside the tube body via a first wire; the intestinal wall pressure sensor is connected to a second pressure sensor connector located outside the tube body via a second wire; and the parts of the first and second wires located inside the tube body are embedded in the wall of the tube body.

[0016] The blocking fistula balloon catheter as described above may optionally further include a suction device connected to the end of the tube body away from the drainage head.

[0017] The blocking fistula balloon catheter as described above, wherein optionally: a plurality of drainage holes are opened on the side wall of the drainage head.

[0018] As described above, the blocking fistula balloon catheter, optionally, the drainage head is a straight tube or a mushroom-shaped structure.

[0019] As described above, the blocking fistula balloon catheter may optionally be a flared structure with an inner diameter gradually increasing in a direction away from the tube body.

[0020] The utility model also proposes a blocking type fistula balloon catheter, which comprises a balloon, a tube body, a drainage head, an intestinal wall pressure sensor and a flushing tube;

[0021] The drainage head is formed at one end of the tube body; the balloon is fixedly sleeved on the outer periphery of the tube body and is located at one end of the tube body close to the drainage head; the intestinal wall pressure sensor is arranged on the outer wall of the balloon;

[0022] The flushing tube is arranged in the tube body.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This utility model uses a balloon that conforms to the intestinal wall and uses a drainage head to draw intestinal fluid out of the body through the tube, thereby blocking intestinal fluid from flowing through the anastomosis. This can alleviate or even prevent severe abdominal and pelvic infections, abscesses, septic shock, and other conditions caused by anastomotic fistulas, thus avoiding secondary surgery. Furthermore, the flushing tube ensures that catheter blockage is avoided during the drainage process.

[0025] The utility model provides an intestinal pressure sensor on the catheter, which can detect the pressure in the intestine and transmit the pressure value to an external device. Medical staff can judge whether it is necessary to help the patient to discharge the liquid in the intestine according to the pressure value, thereby avoiding medical staff draining the patient based on experience, resulting in draining when there is less intestinal fluid and forgetting to drain when there is more intestinal fluid. The control accuracy of the drainage timing is improved, the labor intensity of medical staff is reduced, and the pain of patients caused by untimely drainage is alleviated.

[0026] The utility model can detect the pressure of the intestinal wall in real time by arranging an intestinal wall pressure sensor on the balloon, and transmit the detection data to an external device. Medical staff can judge whether the balloon is close to the intestinal wall by checking the detection data without affecting the blood circulation of the intestinal wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the installation structure of a blocking fistula balloon catheter and a suction device proposed in Example 1;

[0028] Figure 2 for Figure 1 The main view;

[0029] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0030] Figure 4 This is a schematic diagram of the installation structure of an occluding fistula balloon catheter and a suction device proposed in Example 2;

[0031] Figure 5 This is a schematic diagram of the installation structure of an occluding fistula balloon catheter and a suction device proposed in Example 3;

[0032] Figure 6 A simplified diagram of medical personnel inserting an occluding fistula balloon catheter according to the first embodiment into a human body.

[0033] Description of reference numerals:

[0034] 1-tube body, 2-balloon, 3-drainage head, 31-drainage hole,

[0035] 4-intestinal pressure sensor, 5-flushing tube, 51-spray hole,

[0036] 6-intestinal wall pressure sensor, 7-flushing interface, 8-filling interface, 9-first wire, 10-first pressure sensor connector, 11-second wire, 12-second pressure sensor connector, 13-first connector, 14-suction device, 15-drain pipe. DETAILED DESCRIPTION

[0037] The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0038] In order to solve the problems raised in the background technology, the present invention proposes the following solutions.

[0039] Example 1:

[0040] like Figure 1-Figure 3 As shown, the utility model proposes an occluding fistula balloon catheter, which includes a balloon 2, a tube body 1, a drainage head 3, an intestinal pressure sensor 4 and a flushing tube 5.

[0041] The tube body 1 is a flexible tube with openings at both ends, and its hardness can be between 70A and 100A, so that it is resistant to bending and will not collapse easily. The balloon 2 is used to abut the intestinal wall upstream of the anastomosis after being filled with physiological saline to prevent intestinal fluid from flowing through the anastomosis and causing damage to the patient. The drainage head 3 is used to guide the intestinal fluid on the upstream side of the balloon 2 into the tube body 1, and then lead it out of the patient's body through the tube body 1. The intestinal pressure sensor 4 is used to detect the pressure on the upstream side of the balloon 2, and the flushing tube 5 is used to flush the tube body 1 to prevent the tube body 1 from being blocked.

[0042] The drainage head 3 is formed at one end of the tube body 1. Specifically, the drainage head 3 can be integrally formed with the tube body 1 or can be a separate structure. For example, the drainage head 3 can be sleeved or bonded to the end of the tube body 1. Considering that the drainage head 3 needs to be inserted into the human body during use, ensuring a smooth surface and resistance to falling off is one of the important indicators. Therefore, it is preferred that the drainage head 3 be integrally formed with the tube body 1.

[0043] Balloon 2 is fixedly mounted on the outer circumference of tube body 1. During implementation, the relative position of balloon 2 and tube body 1 is fixed, meaning that balloon 2 cannot move along the length of tube body 1. Balloon 2 is located at one end of tube body 1 near drainage head 3. During implementation, drainage head 3 and balloon 2 are both located within the human body. Balloon 2 is used to block the flow of intestinal fluid within the intestine, while drainage head 3 is used to guide intestinal fluid upstream of balloon 2 into the tube body for ultimate excretion.

[0044] By setting the balloon 2 so that it fits against the intestinal wall, and using the drainage head 3 to draw the intestinal fluid out of the body through the tube body, thereby blocking the intestinal fluid from flowing through the anastomosis, it can reduce or even avoid the occurrence of severe abdominal and pelvic infections, abscesses, septic shock, etc. caused by anastomotic fistulas, and avoid secondary surgery. In addition, by setting the flushing tube 5, it is ensured that the catheter can be prevented from being blocked during the process of draining the intestinal fluid. The intestinal pressure sensor 4 can detect the pressure in the intestine and transmit the pressure value to an external device. Medical staff can judge whether to help the patient drain the intestinal fluid based on the pressure value, avoiding medical staff draining the patient based on experience, resulting in draining when there is less intestinal fluid and forgetting to drain when there is more intestinal fluid. This improves the control accuracy of the drainage timing, reduces the labor intensity of medical staff, and also alleviates the pain of patients caused by untimely drainage.

[0045] The balloon 2 is fixedly mounted on the outer wall of one end of the tube body 1. The balloon 2 expands after the injection of physiological saline and contracts after the pumping of water. After the balloon 2 expands, it squeezes the intestinal wall, blocking the flow of intestinal fluid within the intestine. The drainage head 3 is fixedly mounted on the end of the tube body 1 near the balloon 2. The drainage head 3 can be a straight tube. In a specific implementation, to facilitate the entry of intestinal fluid into the drainage head 3, a plurality of drainage holes 31 can be opened on the side wall of the drainage head 3. Of course, the end of the drainage head 3 can also have an opening.

[0046] In order to conveniently and more accurately discharge intestinal fluid, in an embodiment of the present application, the end of the tube body 1 away from the drainage head 3 can be connected to a suction device 14. The negative pressure generated by the suction device 14 can discharge the liquid in the intestine from the drainage head 3 through the tube body 1. The suction device 14 can be a manual suction device or an electric suction device. Both manual suction devices and electric suction devices can be purchased on the market. The intestinal pressure sensor 4 is fixedly mounted on the tube body 1 and is located between the balloon 2 and the drainage head 3. The intestinal pressure sensor 4 is used to detect the pressure in the intestine and transmit the pressure value to an external device. Medical personnel can judge whether it is necessary to help the patient discharge the liquid in the intestine based on the pressure value. In specific implementation, when the suction device 14 is an electric suction device, the detection result of the intestinal pressure sensor 4 can also be used as the control input value of the suction device 14 to control the suction action of the suction device.

[0047] The intestinal pressure sensor 4 can be purchased directly from the market, and the control relationship between the pressure sensor and the electric suction device is a mature technology in the market, which will not be elaborated on here.

[0048] In order to solve the problem of unblocking the pipe body 1, this embodiment adopts a flushing pipe 5 to be set in the pipe body 1. As an implementation method, the flushing pipe 5 can be set along the inner wall of the pipe body 1, and a spray hole 51 connected to the pipe body 1 is opened on the side wall of the flushing pipe 5. Figure 3 In order to increase the spraying force of the spray hole 51 and improve the flushing effect, the end of the flushing pipe 5 close to the drainage head 3 can be closed.

[0049] In order to facilitate the supply of normal saline to the balloon 2 and the flushing tube 5, a flushing interface 7 and a filling interface 8 are provided on the side wall of the tube body 1 away from the balloon 2. During specific use, the flushing interface 7 and the filling interface 8 are located outside the human body. The flushing interface 7 is connected to the flushing tube 5. During flushing, water or normal saline is flushed into the flushing tube 5 through the flushing interface 7. The filling interface 8 is connected to the balloon 2 through a pipeline. The filling interface 8 is used to fill normal saline into the balloon 2 through the filling interface 8 during surgery. The pipeline connecting the filling interface 8 and the balloon 2 is embedded in the wall of the tube body 1. By embedding the pipeline in the wall of the tube body 1, it is possible to avoid the pipeline occupying the space inside the tube body 1. Of course, in actual application, the pipeline can be fixed along the inner wall of the tube body 1 or it can be fixed, and the present invention does not limit this.

[0050] As an implementation method, an adapter can be installed on the side wall of the end of the tube body 1 away from the balloon 2. The flushing port 7 and the filling port 8 are both located on the adapter. The tube body 1 extends out of the adapter and communicates with one end of a drainage pipe 15. The other end of the drainage pipe 15 is connected to the suction device 14. To facilitate the connection between the tube body 1 and the drainage pipe 15, the tube body 1 and the drainage pipe 15 can be connected via a first connector 13.

[0051] For easier control, the intestinal pressure sensor 4 can be connected to an external controller, which can be connected to a suction device. The suction device here is an electric suction device, and a pressure threshold is preset in the controller. When the detection value of the intestinal pressure sensor 4 received by the controller exceeds the pressure threshold, the controller controls the electric suction device to operate and discharge the intestinal fluid. In some other implementations, the intestinal pressure sensor 4 can also be connected to an external display device or alarm device for communication, which can be a wired connection or a wireless connection, which is not set here.

[0052] In actual use, the flushing tube 5 can also be spirally installed in the pipe body 1. Of course, it can also be fixedly installed along the length of the pipe body 1, which is not limited to this. If the flushing tube 5 is spirally installed in the pipe body 1, multiple spray holes 52 are provided along the length of the flushing tube 5. During the flushing process, the spray holes 52 can spray water from different angles, which is beneficial for unblocking the pipe body 1.

[0053] Example 2:

[0054] This embodiment is a further improvement on the basis of the first embodiment. The same parts as the first embodiment will not be described in detail. Only the differences will be described below.

[0055] While Example 1 addresses the issues raised in the background, other challenges remain in practical applications. A key issue is that the blocking fistula method requires a balloon to block intestinal fluid, achieved by inflating the balloon and squeezing the intestinal wall. This approach still presents two problems: first, it is difficult to determine the proper degree of balloon inflation; second, prolonged pressure on the intestinal wall can lead to damage.

[0056] To facilitate detection of the pressure exerted by the balloon 2 against the intestinal wall, this embodiment includes an intestinal wall pressure sensor 6 on the outer wall of the balloon 2. This intestinal wall pressure sensor 6 can detect intestinal wall pressure in real time and transmit the detected data to an external device. Medical personnel can then review the detected data to determine whether the balloon 2 is in close contact with the intestinal wall without affecting intestinal blood flow.

[0057] Because for a long time after the operation, in order to prevent intestinal fluid from entering the anastomosis, the outer periphery of the balloon 2 is always in contact with the intestinal wall. When the intestinal wall is squeezed for a long time, there is a probability of causing intestinal wall necrosis. In actual application, the pressure required between the balloon and the intestinal wall is related to the size of the intestinal pressure. When the intestinal pressure is high, the pressure required between the balloon and the intestinal wall is greater. The embodiment of the present application can reduce the intestinal pressure through the suction device 14, and the amount of physiological saline or air in the balloon 2 can be adjusted through the filling interface 8 to change the pressure between the balloon and the intestinal wall. Therefore, accurately feeding back the intestinal pressure and intestinal wall pressure through the intestinal pressure sensor 4 and the intestinal wall pressure sensor 6 is conducive to reasonably controlling the pressure between the balloon and the intestinal wall, thereby ensuring that the intestinal wall pressure is controlled at a low level and avoiding damage to the intestinal wall due to excessive intestinal wall pressure.

[0058] refer to Figure 4 As shown, the intestinal pressure sensor 4 is connected to a first pressure sensor connector 10 located outside the tube body 1 via a first wire 9. The intestinal wall pressure sensor 6 is connected to a second pressure sensor connector 12 located outside the tube body 1 via a second wire 11. To prevent the first and second wires 9, 11 from obstructing intestinal fluid discharge, the portions of the first and second wires 9, 11 located within the tube body 1 can be embedded within the wall of the tube body 1. In some implementations, the first and second wires 9, 11 can be fixed to the inner wall of the tube body 1 or pass freely within the tube body 1, but this is not a limitation of the present invention.

[0059] The drainage head 3 has a flared structure with a diameter that gradually increases away from the tube body 1. Multiple drainage holes 31 are provided on the sidewall of the drainage head 3. The flared design of the drainage head 3 facilitates the entry of intestinal fluid into the drainage head 3. The sewage pipe 15 is connected to a suction device 14, which can be manual or electric. The electric suction device is used as an example here. To facilitate insertion of the drainage head 3 into the human body, the drainage head 3 can also be configured as a straight tube or a mushroom-shaped structure. This is not a limitation of the present invention.

[0060] Example 3:

[0061] This embodiment is a further improvement on the basis of the second embodiment, and the parts identical to the second embodiment will not be repeated.

[0062] See Figure 5 As shown, the drainage head 3 has a mushroom-shaped structure, with multiple drainage holes 31 formed on the side wall of the drainage head 3. The drainage pipe 15 is connected to the suction device 14, which is a manual suction device. The mushroom-shaped structure can avoid scratching the intestinal wall and facilitate the entry of intestinal fluid into the drainage head 3.

[0063] The steps for implanting a catheter into a patient are as follows:

[0064] Step 1, balloon inspection: First, fill the catheter's balloon 2 with water to check for leaks. If the balloon 2 is leak-proof, drain the water from the balloon 2 and place the catheter back in use. This step should be performed in a sterile or surgical environment, and the water used to inspect the catheter should be normal saline.

[0065] Step ②, abdominal wall stoma: After the patient undergoes colorectal anastomosis, open surgery is selected according to the location of the ileocecal region, and laparoscopic surgery is performed at McBurney's point, which can serve as both a Trocar hole (i.e., trocar hole) and an abdominal wall stoma.

[0066] Step ③, enterostomy: Make a purse-string incision at 10-15 cm in the terminal ileum for intubation.

[0067] Step ④, purse-string suturing: make the first purse-string and make an incision at the selected location, then insert the end of the catheter equipped with the drainage head 3 into the ileum through the incision in reverse until the balloon 2 is completely located in the ileum, then tighten and tie the first purse-string, suture the second purse-string on the gap of the first purse-string, and tighten and tie the knot.

[0068] Step 5, balloon inflation: Before inflation, connect the intestinal wall pressure sensor 6 to an external display device and inject saline into the balloon 2 through the filling port 8 until the intestinal wall turns light pink or the detection result of the intestinal wall pressure sensor 6 reaches a reasonable value. In actual applications, the detection value of the intestinal wall pressure sensor 6 determined during surgery can be used as a reference for postoperative monitoring.

[0069] Step ⑥, fix the inner side of the abdominal wall: tightly suture the intestinal wall stoma and the inner surface of the abdominal wall stoma.

[0070] Step 7, extracorporeal fixation: Both sides of the extracorporeal catheter are fixed to the skin with sutures.

[0071] Through the above steps, the catheter can be implanted into the patient's body (such as Figure 6 During the postoperative recovery process, the suction device 14 can be controlled to drain intestinal fluid based on the detection results of the intestinal pressure sensor 4, or the intestinal wall pressure can be adjusted based on the detection results of the intestinal wall pressure sensor 6. Of course, the suction device 14 can also be operated to drain intestinal fluid in a timed and quantitative manner.

[0072] After surgery, if the catheter can be removed clinically, the saline solution in balloon 2 is evacuated to allow intestinal fluid to flow back to the distal colorectum. Once the patient is confirmed to have no anastomotic leak and normal vital signs, the catheter can be easily removed. The leak is then sealed with vaseline gauze, covered with gauze, and secured with a abdominal band. After 3-4 days, the dressing is changed and the vaseline gauze removed. Once the leak has largely healed, the gauze can be covered.

[0073] Example 4:

[0074] This embodiment is a further improvement on the first embodiment. The main difference is that, instead of an intestinal pressure sensor 4, an intestinal wall pressure sensor 6 is provided on the balloon 2. All other aspects refer to the first embodiment. Regarding the similarities in structure, function, and effect, refer to the first embodiment. The following mainly describes the differences.

[0075] The utility model also discloses a blocking type fistula balloon catheter, which comprises a balloon 2, a tube body 1, a drainage head 3, an intestinal wall pressure sensor 6 and a flushing tube 5.

[0076] The drainage head 3 is formed at one end of the tube body 1; the balloon 2 is fixedly mounted on the outer circumference of the tube body 1 and is located at the end of the tube body 1 near the drainage head 3; the intestinal wall pressure sensor 6 is fixed to the outer wall of the balloon 2; and the flushing tube 5 is arranged in the tube body 1. The tube body 1 is a flexible tube with openings at both ends, and has a hardness of about 70A-100A, so that it is resistant to bending and will not collapse easily. The balloon 2 can expand after being injected with normal saline and can contract after water is pumped out, so that it can be inserted into the patient's body during surgery and the catheter can be removed after the patient's intestinal anastomosis has healed. The intestinal wall pressure sensor 6 is connected to the second pressure sensor connector 12 located outside the tube body 1 via a second wire 11. When in use, the second pressure sensor connector 12 is connected to an external device. The external device can be a display, and medical staff can use the display to understand the pressure between the balloon 2 and the intestinal wall in real time and determine whether the balloon 2 is in contact with the intestinal wall.

[0077] The function of the intestinal wall pressure sensor 6 is, on the one hand, to facilitate the surgeon to accurately know the pressure between the balloon 2 and the intestinal wall during the operation; on the other hand, to facilitate medical staff to intuitively and accurately determine the pressure between the balloon 2 and the intestinal wall during the postoperative recovery process.

[0078] It should be pointed out that, in the present invention, the intestinal pressure refers to the intestinal pressure on the upstream side of the balloon; the intestinal wall pressure refers to the pressure between the balloon and the intestinal wall; the upstream is determined by reference to the flow direction of the intestinal fluid; in the present invention, the outer diameter of the drainage head 3 of the mushroom-shaped structure first increases and then decreases in the direction approaching the balloon 2 or has a similar structure, and the drainage hole 31 is arranged in the middle part of the axial direction of the drainage head 3 of the mushroom-shaped structure, that is, the drainage hole 31 is arranged at the largest diameter of the drainage head of the mushroom-shaped structure.

[0079] The above describes in detail the structure, features and effects of the present invention based on the embodiments shown in the drawings. The above are only preferred embodiments of the present invention, but the scope of implementation of the present invention is not limited to what is shown in the drawings. Any changes made in accordance with the concept of the present invention, or modifications to equivalent embodiments with equivalent changes, which do not exceed the spirit covered by the description and drawings, should be within the scope of protection of the present invention.

Claims

1. A blocking fistula balloon catheter, characterized in that: It comprises a balloon (2), a tube body (1), a drainage head (3), an intestinal pressure sensor (4) and a flushing tube (5); The drainage head (3) is formed at one end of the tube body (1); the balloon (2) is fixedly sleeved on the outer periphery of the tube body (1) and is located at one end of the tube body (1) close to the drainage head (3); The intestinal pressure sensor (4) is mounted on the tube body (1) and is located between the balloon (2) and the drainage head (3); The flushing pipe (5) is arranged in the pipe body (1).

2. The blocking fistula balloon catheter according to claim 1, characterized in that: An intestinal wall pressure sensor (6) is provided on the outer wall of the balloon (2).

3. The occluding fistula balloon catheter according to claim 1, characterized in that: A flushing interface (7) and a filling interface (8) are provided on the side wall of one end of the tube body (1) away from the balloon (2); the flushing interface (7) is in communication with the flushing tube (5); and the filling interface (8) is connected to the balloon (2) via a pipeline.

4. The blocking fistula balloon catheter according to claim 3, characterized in that: The flushing pipe (5) is arranged along the inner wall of the pipe body (1), and a spray hole (51) communicating with the pipe body (1) is provided on the side wall of the flushing pipe (5).

5. The blocking fistula balloon catheter according to claim 2, characterized in that: The intestinal pressure sensor (4) is connected to a first pressure sensor connector (10) located outside the tube body (1) via a first wire (9); the intestinal wall pressure sensor (6) is connected to a second pressure sensor connector (12) located outside the tube body (1) via a second wire (11); and the portions of the first wire (9) and the second wire (11) located inside the tube body (1) are embedded in the wall of the tube body (1).

6. The occluding fistula balloon catheter according to claim 1, characterized in that: It also includes a suction device connected to an end of the tube body (1) away from the drainage head (3).

7. The occluding fistula balloon catheter according to any one of claims 1 to 6, characterized in that: A plurality of drainage holes (31) are provided on the side wall of the drainage head (3).

8. The occluding fistula balloon catheter according to claim 7, characterized in that: The drainage head (3) is a straight tube or a mushroom-shaped structure.

9. The occluding fistula balloon catheter according to claim 7, characterized in that: The drainage head (3) is a flared structure with an inner diameter gradually increasing in a direction away from the tube body (1).

10. An occluding fistula balloon catheter, characterized in that: It comprises a balloon (2), a tube body (1), a drainage head (3), an intestinal wall pressure sensor (6) and a flushing tube (5); The drainage head (3) is formed at one end of the tube body (1); the balloon (2) is fixedly sleeved on the outer periphery of the tube body (1) and is located at one end of the tube body (1) close to the drainage head (3); the intestinal wall pressure sensor (6) is arranged on the outer wall of the balloon (2); The flushing pipe (5) is arranged in the pipe body (1).

Images