Balloon stent for preventing leakage of intestinal anastomosis and assembly thereof

Abstract

The utility model discloses a kind of balloon stents for preventing intestinal anastomotic leakage, belong to a kind of medical devices, the balloon stent includes expansion pipe, communicating pipe and balloon, expansion pipe is fixedly connected with communicating pipe and is interconnected, the other end of communicating pipe is connected with balloon, balloon is connected with one-way valve by pipeline, and one-way valve is connected with gas source power mechanism, after balloon stent enters into patient rectum, the other end of expansion pipe is located outside patient body and the balloon of other end passes through rectal anastomotic mouth, inflate balloon by gas source power mechanism, so that balloon is supported at rectal inside, balloon stent in the utility model is used with sheath tube assembly, balloon stent is positioned by sheath tube assembly, to guide rectal contents to discharge through balloon stent, avoid the problem of leakage caused by that contents move to rectal anastomotic mouth, improve use effect, and it is strong in practicality.

Description

Technical Field

[0001] This utility model relates to a medical device, specifically a balloon stent for preventing leakage at the intestinal anastomosis. Background Technology

[0002] Colorectal dysplasia has become a common condition in gastroenterology. Treatment involves removing the affected portion of the rectum and then reconnecting it to the healthy portion of the colon and rectum via anastomosis. After surgery, intestinal contents are drained through the colorectal anastomosis into the anus and expelled from the body.

[0003] However, there are certain complications after colorectal surgery. One such complication is anastomotic leakage, which occurs in about 22% of cases. When anastomotic leakage occurs, intestinal contents can seep into the abdominal cavity, causing abdominal infection and increasing the risk of abdominal lesions and cancer.

[0004] Currently, the standard treatment for preventing anastomotic leakage is ostomy, which creates an outlet for intestinal contents and collects them using an ostomy bag, preventing the contents from passing through the anastomosis. However, this method cannot truly prevent anastomotic leakage; it only alleviates the clinical consequences of leakage. Patients experience low quality of life and high complication rates. 70% of patients need to use an ostomy bag for 4-6 months, and after the anastomosis heals, a second surgery is required to close the stoma. Therefore, avoiding anastomotic leakage through ostomy is not ideal. This invention provides a balloon stent for preventing anastomotic leakage to address the above problems. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] A balloon stent for preventing anastomotic leakage includes an dilator, a connecting tube, and a balloon. The dilator and the connecting tube are fixedly connected and interconnected. The other end of the connecting tube is connected to the balloon. The balloon is connected to a one-way valve via a tube, and a pneumatic power mechanism is connected to the one-way valve. After the balloon stent is inserted into the patient's rectum, the other end of the dilator is outside the patient's body, and the balloon at the other end passes through the rectal anastomosis. The balloon is inflated by the pneumatic power mechanism, so that the balloon protrudes into the rectum.

[0008] Preferably, in the above-mentioned balloon stent, multiple balloons are provided, and each balloon is connected to a gas source power mechanism through a one-way valve.

[0009] Preferably, in the above-mentioned balloon stent, the expansion tube has a trumpet-shaped structure, with the smaller diameter end connected to the connecting tube.

[0010] Another aspect of this utility model provides a component that is used in conjunction with a balloon stent, and the specific technical solution is as follows.

[0011] An assembly including the balloon stent described above, and further including a sheath assembly for limiting the balloon stent.

[0012] Preferably, in the above-mentioned components, the sheath assembly includes a connecting handle and a handle located at one end of the connecting handle, and the other end of the connecting handle is provided with an elastic bend. After the sheath assembly enters the patient's body, it bends and wraps around the patient's rectum through the bend to limit the balloon, and the bend is located between the balloon and the anastomosis.

[0013] Preferably, in the above-mentioned components, a traction component is provided inside the connecting handle. One end of the traction component is connected to the curved part, and the other end passes through the connecting handle and is located at the handle. The traction component drives the curved part to bend and form a ring structure that covers the outside of the rectum.

[0014] Preferably, in the above-mentioned components, the diameter of the annular structure formed by the curved portion is smaller than the diameter of the inflated balloon.

[0015] Preferably, the above-mentioned components further include a delivery device for delivering the balloon stent into the patient's rectum. The delivery device includes a connecting rod, a handle, and an end. One end of the connecting rod is connected to the handle, and the other end is connected to the end. When it is necessary to deliver the balloon stent into the patient's body, the end is inserted into the dilation tube through the handle, and then the balloon stent is delivered from the patient's anus into the patient's rectum through the delivery device.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] The balloon stent of this invention is inserted into the patient's rectum to guide the rectal contents out through the balloon stent, avoiding leakage caused by the contents moving to the rectal anastomosis. The balloon stent is stable by using multiple balloons. In addition, the balloon stent of this invention is used in conjunction with a sheath assembly. The sheath assembly is inserted into the patient's body through an incision and forms a ring structure around the outside of the rectum through a bending part, which is used to limit the balloon and thus ensure the stability of the balloon stent. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of the balloon stent and sheath assembly in this utility model.

[0019] Figure 2 This is a schematic diagram of the balloon stent in this utility model;

[0020] Figure 3 This is a schematic diagram of the sheath assembly in this utility model;

[0021] Figure 4 This is a diagram showing the state of the sheath assembly in use according to this utility model;

[0022] Figure 5 This is a diagram showing the fit between the sheath assembly and the balloon stent in this utility model.

[0023] Figure 6 This is a schematic diagram of the balloon stent and delivery device in this utility model;

[0024] Figure 7 This is a schematic diagram of the conveying device in this utility model.

[0025] The correspondence between the labels and component names in the attached figures is as follows:

[0026] 100. Balloon stent; 200. Sheath assembly; 300. Delivery device;

[0027] 101. Dilation tube; 102. Connecting tube; 103. Balloon; 104. Check valve;

[0028] 201. Connecting handle; 202. Handle; 203. Bend;

[0029] 301. Connecting rod; 302. Handhold part; 303. End. Detailed Implementation

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0031] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments. The present invention provides the following embodiments.

[0033] like Figure 1 As shown, this is a schematic diagram of the structure of the balloon stent 100 and the sheath assembly 200 in this embodiment. The balloon stent 100 in this embodiment is used to prevent leakage at the intestinal anastomosis. Figure 2 As shown, this is a schematic diagram of the balloon stent 100 in this embodiment. The balloon stent 100 in this embodiment includes an expansion tube 101, a connecting tube 102, and a balloon 103. A one-way valve 104 is connected to the balloon 103 through a tube. After the patient's rectum is anastomosed, medical staff insert the balloon stent 100 into the patient's rectum through the anus. One end of the expansion tube 101 in the balloon stent 100 is located outside the anus, and the other end of the balloon stent 100 enters the patient's rectum and moves within the rectum until it passes through the anastomosis. Then, the balloon 103 is inflated by the air source power mechanism connected to the one-way valve 104, so that the balloon 103 adheres to the inner wall of the rectum. The rectal contents are discharged from the patient's body through the connecting tube 102 and the expansion tube 101, thereby avoiding the problem of leakage of rectal contents when passing through the anastomosis and preventing the anastomosis leakage problem.

[0034] In this embodiment, the balloon 103 is supported in the patient's rectum, which ensures the stability of the balloon stent 100 to a certain extent. In order to improve the stability of the balloon stent 100, the balloon 103 in this embodiment is located at the end of the connecting tube 102, and multiple balloons 103 are provided. Each balloon stent 103 is connected to a one-way valve and is connected to a pneumatic power mechanism through the one-way valve. The pneumatic power mechanism inflates the balloon 103. Multiple balloons 103 further ensure the stability of the balloon stent 100.

[0035] In this embodiment, the dilation tube 101 has a trumpet-shaped structure, with one small-diameter end connected to the connecting tube 102 and the other large-diameter end located outside the patient's anus, facilitating the drainage of rectal contents after they enter the dilation tube 101. Furthermore, although the balloon 103 ensures the stability of the balloon stent 100, the movement of rectal contents within the connecting tube 102 and dilation tube 101 can still cause the balloon stent 100 to move as a whole. This movement of the balloon 103 can easily lead to anastomotic tearing. To further ensure the stability of the balloon stent 100 and avoid these problems, this embodiment provides a component for ensuring the stability of the balloon stent 100. This component includes a sheath assembly 200 for stabilizing the balloon stent 100, such as... Figure 3 As shown, this is a diagram of the sheath assembly 200 in its unused state. In this embodiment, the sheath assembly 200 includes a connecting handle 201 and a handle 202 located at one end of the connecting handle 201. The other end of the connecting handle 201 has an elastic bend 203. In this embodiment, a traction component is provided inside the connecting handle 201. One end of the traction component is connected to the bend 203, and the other end passes through the connecting handle 201 and is located at the handle 202. When the sheath assembly 200 is in use, it is inserted into the patient's body through an incision. Medical personnel hold the handle 202 to allow the bend 203 to enter the rectum outside the patient's body, located between the balloon 103 and the anastomosis. By pulling the traction mechanism, the bend 203 bends and wraps around the rectum, achieving the desired effect. Figure 5 As shown, the curved portion 203 forms a ring-shaped structure covering the rectum and is located between the balloon 103 and the anastomosis. It is worth noting that in this embodiment, the balloon 103 is located inside the rectum, the curved portion 203 is located outside the rectum, and the diameter of the balloon 103 after inflation is larger than the diameter of the ring-shaped structure formed by the curved portion 203. Therefore, even when the balloon stent 100 moves inside the rectum, when the balloon 103 moves to the curved portion 203, since the diameter of the balloon 103 is larger than the diameter of the ring-shaped structure formed by the curved portion 203, the curved portion 203 blocks the balloon 103, preventing the balloon 103 from moving further, thereby ensuring the stability of the balloon stent 100.

[0036] like Figure 6 as well as Figure 7 As shown, the components in this embodiment also include a delivery device 300. The delivery device 300 is used to insert the balloon stent 100 from the anus into the rectum of the patient. After the balloon stent 100 enters the rectum of the patient, one end of the dilation tube 101 of the balloon stent 100 is located outside the patient's body to discharge rectal contents.

[0037] like Figure 7As shown, the delivery device 300 in this embodiment includes a connecting rod 301, a handheld part 302, and an end part 303. One end of the connecting rod 301 is connected to the handheld part 302, and the other end is connected to the end part. When it is necessary to deliver the balloon stent 100 into the patient's body, the end part is inserted into the dilation tube 101 through the handheld part 302, and then the balloon stent 100 is delivered from the patient's anus into the patient's rectum through the delivery device 300.

[0038] It is worth noting that after the balloon stent 100 is inserted into the patient's rectum, the balloon 103 in the balloon stent 100 needs to move along the length of the rectum and pass through the anastomosis in order to limit the balloon 103 by the sheath assembly 200, so as to prevent the balloon from moving to the anastomosis in the rectum and causing the anastomosis to tear.

[0039] After the balloon stent 100 is inserted into the patient's rectum, the rectal contents are discharged through the connecting tube 102 and the dilator 101. The stability of the balloon stent 100 is improved by the cooperation of multiple balloons 103 and the sheath assembly 200, so as to prevent leakage at the intestinal anastomosis.

[0040] The above description, in conjunction with specific embodiments, provides a further detailed explanation of the present utility model. It should not be construed that the specific implementation of the present utility model is limited to these descriptions. For those skilled in the art, several simple deductions or substitutions can be made without departing from the concept of the present utility model, and all such deductions or substitutions should be considered to fall within the scope of protection defined by the claims submitted by the present utility model.

Claims

1. A balloon stent for preventing anastomotic leakage, characterized in that, It includes a dilator (101), a connecting tube (102), and a balloon (103). The dilator (101) and the connecting tube (102) are fixedly connected and interconnected. The other end of the connecting tube (102) is connected to the balloon (103). The balloon (103) is connected to a one-way valve through a pipe, and a pneumatic power mechanism is connected to the one-way valve. After the balloon stent enters the patient's rectum, the other end of the dilator (101) is located outside the patient's body, and the balloon (103) at the other end passes through the rectal anastomosis. The balloon (103) is inflated by the pneumatic power mechanism, so that the balloon (103) is supported inside the rectum.

2. The balloon stent for preventing anastomotic leakage according to claim 1, characterized in that, Multiple balloons (103) are provided, and each balloon (103) is connected to a gas source power mechanism through a one-way valve.

3. The balloon stent for preventing anastomotic leakage according to claim 1, characterized in that, The expansion tube (101) has a trumpet-shaped structure, with one end of the smaller diameter connected to the connecting tube (102).

4. A component, characterized in that, The balloon stent for preventing anastomotic leakage as described in any one of claims 1-3 further includes a sheath assembly (200) for limiting the balloon stent (100).

5. The component according to claim 4, characterized in that, The sheath assembly (200) includes a connecting handle (201) and a handle (202) located at one end of the connecting handle (201). The other end of the connecting handle (201) is provided with an elastic bend (203). After the sheath assembly (200) enters the patient's body, it bends and wraps around the patient's rectum through the bend (203) to limit the balloon (103). The bend (203) is located between the balloon (103) and the anastomosis.

6. The component according to claim 5, characterized in that, A traction component is provided inside the connecting handle (201). One end of the traction component is connected to the bending part (203), and the other end passes through the connecting handle (201) and is located at the handle (202). The traction component drives the bending part (203) to bend and form a ring structure that covers the outside of the rectum.

7. The component according to claim 6, characterized in that, The diameter of the annular structure formed by the curved portion (203) is smaller than the diameter of the inflated balloon (103).

8. The component according to claim 4, characterized in that, It also includes a delivery device (300) for delivering the balloon stent (100) into the patient's rectum. The delivery device (300) includes a connecting rod (301), a handle (302), and an end (303). One end of the connecting rod (301) is connected to the handle (302), and the other end is connected to the end. When the balloon stent (100) needs to be delivered into the patient's body, the end is inserted into the dilator (101) through the handle (302), and then the balloon stent (100) is delivered from the patient's anus into the patient's rectum through the delivery device (300).

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