Rectum plugging device

Abstract

The utility model relates to a rectum plugging device which comprises a rectum plugging device body, an inflation air bag and an inflation tube. An inflation valve which is kept in a normally closed state is arranged in an inflation opening in the near end of the rectum plugging device; the first end of the inflation tube is fixedly connected with an air outlet of the inflation air bag, the second end of the inflation tube is inserted into the inflation valve so that an inner cavity of the rectum plugging device can be communicated with the inflation tube, the first end of the inflation tube is provided with a one-way valve and a gas release valve, and the gas release valve is located on the far side of the one-way valve and provided with a control key used for adjusting the opening degree of the valve. The inflatable airbag is provided with an air inlet; when the gas release valve is closed, the inflatable airbag is extruded, the gas inlet prevents gas in the airbag from flowing to the outside, the gas in the airbag is forced to inflate the rectum occluder through the inflatable tube, the inflatable airbag is released, the inflatable airbag is restored, and the outside gas is sucked into the airbag through the gas inlet; and the control key is adjusted to release gas in the rectum occluder. Inflation and deflation adjustment can be carried out, and the rectum plugging device can be conveniently placed at a proper position in the rectum.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a rectal occlusion device. Background Technology

[0002] During transanal minimally invasive surgery (TAMIS), the surgeon typically first plugs the deep part of the rectum with sterilized cotton balls or cotton plugs to create a relatively closed and stable working environment. Then, the surgeon slowly inflates the rectum with a suitable amount of gas (usually carbon dioxide or air) using a specific device. The inflated gas effectively expands the rectal wall, providing a clear and wide surgical field, allowing the surgeon to observe and precisely locate the lesion, and also providing sufficient space for surgical instruments. Next, the surgeon, using an endoscope and other surgical instruments, enters the rectum through the anus, a natural cavity, to perform lesion removal, suturing, or other necessary treatment procedures.

[0003] However, using cotton balls or cotton plugs to seal the deep rectum has the following drawbacks: 1. During inflation, the cotton may not seal tightly, allowing more gas to pass through, which is not conducive to maintaining the inflation space in the rectum; 2. After surgery, the cotton may be difficult to remove completely, resulting in residue in the rectum, which may cause inflammatory reactions and discomfort.

[0004] To overcome the drawbacks of using cotton to block the rectum, a rectal occluder has been developed to replace cotton in blocking the deep rectum, such as... Figure 1 and Figure 2 As shown, the rectal occluder includes a support tube and an annular airbag. The annular airbag is fixedly sleeved on the support tube, and the annular airbag and the support tube are sealed together. The support tube has a through hole that communicates with the annular airbag. The proximal end of the support tube has an inflation port. Air is inflated into the support tube through the inflation port, and the inflated gas enters the annular airbag through the through hole, causing the annular airbag to inflate. To place the rectal occluder in the appropriate position within the rectum, the procedure is as follows: With the circular balloon in a contracted state, the rectal occluder is inserted into the rectum through the anus (at this point, the rectal occluder is in its initial position). Simultaneously, an endoscope is inserted into the rectum through the anus, positioned proximal to the rectal occluder. Inflation is then introduced into the rectal occluder to partially open the rectum, allowing the occluder to move relative to the rectum while simultaneously establishing a preliminary endoscopic view. The endoscope moves along with the rectal occluder deeper into the rectum. When the endoscope observes that the rectal occluder has moved to the distal side of the target lesion, movement of the rectal occluder is stopped (at this point, the rectal occluder is in the target position). Inflation continues to be introduced into the rectal occluder to fully open the rectum. At this point, the rectal occluder is completely and tightly adhered to the rectal wall, achieving fixation of the rectal occluder within the rectum and simultaneously blocking the deep rectum.

[0005] The following issues need to be addressed during the use of rectal occluders: 1. To ensure that the rectal occluder partially opens the rectum at its initial position, the air volume of the occluder needs to be adjusted in real time. That is, if too much air is added, air should be released; if too little air is added, air should be added. This ensures that the occluder has an appropriate amount of air to partially open the rectum. 2. To ensure that the rectal occluder fully opens the rectum at the target position to fix the occluder, the air volume of the occluder needs to be adjusted in real time. That is, if too much air is added, air should be released; if too little air is added, air should be added. Adding too much air will have an adverse effect on the rectum, while adding too little air will prevent the occluder from being fixed in place.

[0006] Therefore, there is an urgent need to provide a rectal occlusion device that can regulate inflation and deflation. Utility Model Content

[0007] (a) Technical problems to be solved

[0008] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a rectal occlusion device that can be adjusted for inflation and deflation, making it convenient to place the rectal occluder in a suitable position in the rectum.

[0009] (II) Technical Solution

[0010] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0011] This utility model provides a rectal occlusion device, including a rectal occluder, an inflatable bladder, and an inflation tube; the proximal end of the rectal occluder has an inflation port, and an inflation valve is provided inside the inflation port, which is kept in a normally closed state; the first end of the inflation tube is fixedly connected to the air outlet of the inflatable bladder, and the second end of the inflation tube can be inserted into the inflation valve to connect the inner cavity of the rectal occluder with the inflation tube; the first end of the inflation tube is provided with a first one-way valve and a gas release valve, the gas release valve is located on the far side of the first one-way valve, and the gas release valve has a control key for adjusting the valve opening; the inflatable bladder has an air inlet.

[0012] The second end of the inflation tube is inserted into the inflation valve. When the gas release valve is closed, the inflation bladder is squeezed, and the air inlet prevents the gas inside the bladder from flowing to the outside. This forces the gas inside the bladder to pass through the first one-way valve and the inflation tube to inflate the rectal blocker. When the inflation bladder is released, it returns to its original shape, and outside gas is drawn into the bladder through the air inlet. Adjusting the control key releases the gas inside the rectal blocker to the outside.

[0013] Optionally, the inflation tube includes a rigid tube section and a flexible tube section connected sequentially from far to near. The far end of the rigid tube section can be inserted into an inflation valve, and the near end of the flexible tube section is fixedly connected to the air outlet of the inflation bladder.

[0014] Optionally, the rigid tube section and the flexible tube section are inserted together, with the length of the rigid tube section being 1 to 5 cm and the length of the flexible tube section being 25 to 35 cm.

[0015] Optionally, the inflation valve includes a soft valve body and a tubular rigid valve shell covering the periphery of the soft valve body. An inflation channel extending axially along the rigid valve shell is formed through the soft valve body. The first end of the inflation channel is in an open, hole-like state, and the second end of the inflation channel is constrained by the rigid valve shell to a closed state where the channel walls are tightly fitted together. The shell of the inflation port serves as the rigid valve shell, or the rigid valve shell is fixedly and sealed to the inflation port. The second end of the inflation tube can be inserted into the inflation channel from the first end of the inflation channel and penetrate the inflation channel, so that the inner cavity of the rectal blocker is connected to the inflation tube. The second end of the inflation tube is pulled out from the inflation channel, and the inflation channel returns to its original state.

[0016] Optionally, the inflation channel is a tapered hole with a gradually decreasing diameter from the first end to the second end.

[0017] Optionally, the inflation valve includes an elastic element, a valve body, and a valve shell. The valve shell is fixedly and sealedly installed at the inflation port. The inner wall of the valve shell has an annular step. The valve body is inserted into the valve shell and is connected to the valve shell through the elastic element. The valve body has a baffle. Under no external force, the elasticity of the elastic element drives the baffle to always abut against the annular step to seal the valve shell. The second end of the inflation tube is inserted into the inflation valve. The second end of the inflation tube can hold the baffle against the elasticity of the elastic element, causing the baffle to move and disengage from the annular step. The valve shell opens, allowing the inner cavity of the rectal occluder to communicate with the inflation tube.

[0018] Optionally, a second one-way valve is provided inside the air inlet.

[0019] Optionally, the air outlet and air inlet of the inflatable airbag are arranged opposite each other, and a pair of protruding lips facing the air outlet are formed on the inner side of the air inlet. The air gap between the two lips is connected to the air inlet. When the airbag is squeezed, the two lips fit tightly together to close the air inlet and prevent the gas inside the airbag from flowing to the outside. When the airbag is released, the airbag returns to its original shape, and the outside gas is drawn into the airbag through the air gap between the two lips.

[0020] Alternatively, the control keys can be knobs, buttons, or toggle switches.

[0021] Optionally, the rectal occluder includes an annular balloon and a support tube; the support tube extends in the proximal direction, the proximal end of the support tube has an inflation port, the distal end of the support tube is closed, the annular balloon is fixedly sleeved on the support tube, and the annular balloon and the support tube are sealed together, the support tube has a through hole, and the support tube communicates with the annular balloon through the through hole; the outer surface of the annular balloon has at least one anti-slip part that extends circumferentially around the annular balloon and protrudes from the outer surface of the annular balloon.

[0022] (III) Beneficial Effects

[0023] The beneficial effects of this utility model are:

[0024] The rectal occlusion device provided by this utility model allows for the connection of the second end of the inflation tube to the inflation valve. By squeezing the inflation bladder and adjusting the control key, the rectal occluder can be inflated and deflated. This allows for the release of excess gas and the replenishment of gas as needed, thus enabling the appropriate amount of gas to be injected into the rectal occluder to partially or completely open the rectum. This ensures the stable use of the rectal occluder, facilitates its placement in the appropriate position within the rectum, and does not cause any adverse effects on the human body. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the rectal occlusion device according to Embodiment 1;

[0026] Figure 2 This is a cross-sectional schematic diagram of the rectal occluder according to Example 1;

[0027] Figure 3 This is a schematic diagram of the overall structure of the rectal occlusion device according to Example 2;

[0028] Figure 4 This is a cross-sectional schematic diagram of the rectal occluder according to Example 2;

[0029] Figure 5 This is a cross-sectional schematic diagram of the inflatable airbag according to Example 2.

[0030] Explanation of reference numerals in the attached figures

[0031] 11: Inflation port; 12: Elastic element; 13: Valve body; 14: Valve shell; 15: Annular step; 17: Baffle; 18: Luer interface;

[0032] 2: Inflatable airbag;

[0033] 21: Second check valve; 22: Lip;

[0034] 31: Gas relief valve; 32: Rigid pipe section; 33: Flexible pipe section;

[0035] 41: Annular airbag; 42: Support tube; 43: Cone; 44: Through hole; 45: Anti-slip part;

[0036] 51: Soft valve body; 53: Inflation channel. Detailed Implementation

[0037] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below with reference to the accompanying drawings. Here, "near" refers to the side closer to the operator, and "far" refers to the side closer to the patient.

[0038] Example 1

[0039] like Figure 1 and Figure 2 As shown, this embodiment provides a rectal occlusion device.

[0040] The rectal occlusion device includes a rectal occluder, an inflatable bladder 2, and an inflation tube. The proximal end of the rectal occluder has an inflation port 11, and an inflation valve is provided inside the inflation port 11. The inflation valve is kept in a normally closed state. The first end of the inflation tube is fixedly connected to the air outlet of the inflatable bladder 2, and the second end of the inflation tube can be inserted into the inflation valve to connect the inner cavity of the rectal occluder with the inflation tube. The first end of the inflation tube is provided with a first one-way valve and a gas release valve 31. The gas release valve 31 is located far from the first one-way valve and has a control key for adjusting the valve opening. The inflatable bladder 2 has an air inlet. The second end of the inflation tube is inserted into the inflation valve. The gas release valve 31 is closed. When the inflation bladder 2 is squeezed, the air inlet prevents the gas inside the bladder from flowing to the outside. This forces the gas inside the bladder to pass through the first one-way valve and the inflation tube to inflate the rectal blocker. When the inflation bladder 2 is released, the inflation bladder 2 returns to its original state, and the outside gas is drawn into the bladder through the air inlet. Adjusting the control key releases the gas inside the rectal blocker to the outside.

[0041] It should be noted that the inflatable airbag 2 will return to its original shape due to its own elasticity.

[0042] In this rectal occlusion device, the second end of the inflation tube is connected to the inflation valve externally, allowing the inner cavity of the rectal occluder to communicate with the inflation tube. When the rectal occluder is in the contracted state, it is inserted into the rectum through the anus (at this time, the rectal occluder is in its initial position). Simultaneously, an endoscope is inserted into the rectum through the anus, positioned proximal to the rectal occluder. The rectal occluder is then inflated and deflated by squeezing the inflation balloon 2 and adjusting the control key, allowing appropriate gas to partially open the rectum. At this point, the rectum is allowed to... The rectal occluder moves relative to the rectum, simultaneously establishing a preliminary endoscopic view. The endoscope follows the rectal occluder deeper into the rectum. When the endoscope observes that the rectal occluder has moved to the distal side of the target lesion, the movement of the rectal occluder is stopped (at this point, the rectal occluder is in the target position). Then, the rectal occluder is inflated and deflated by squeezing the inflation balloon 2 and adjusting the control key. Appropriate gas is continued to be injected into the rectal occluder to fully open the rectum, thus achieving both fixed position of the occluder and no adverse effects on the rectum.

[0043] Preferably, the inflation tube includes a rigid tube section 32 and a flexible tube section 33 connected sequentially from distal to proximal. The distal end of the rigid tube section 32 can be inserted into the inflation valve, and the proximal end of the flexible tube section 33 is fixedly connected to the air outlet of the inflatable airbag 2. In this way, setting the distal end of the inflation tube as a rigid tube section 32 facilitates insertion into the inflation valve.

[0044] More preferably, the rigid tube portion 32 and the flexible tube portion 33 are inserted together, the length of the rigid tube portion 32 is 1 to 5 cm, and the length of the flexible tube portion 33 is 25 to 35 cm.

[0045] Preferably, the inflation valve includes an elastic element 12, a valve body 13, and a valve shell 14. The valve shell 14 is fixedly and sealedly installed at the inflation port 11. The inner wall of the valve shell 14 has an annular step 15. The valve body 13 is inserted into the valve shell 14 and is connected to the valve shell 14 through the elastic element 12. The valve body 13 has a baffle 17. When no external force is applied, the elasticity of the elastic element 12 drives the baffle 17 to always abut against the annular step 15 to seal the valve shell 14. The second end of the inflation tube is inserted into the inflation valve. The second end of the inflation tube can hold the baffle 17 against the elasticity of the elastic element 12, causing the baffle 17 to move and disengage from the annular step 15. The valve shell 14 opens, allowing the inner cavity of the rectal occluder to communicate with the inflation tube.

[0046] Furthermore, the proximal end of the valve body 14 is a Luer interface 18, and the distal end of the rigid tube 32 is a Luer connector. The distal end of the rigid tube 32 is inserted into the inflation valve to form a Luer connection, and the rigid tube 32 and the valve body 14 are sealed together.

[0047] Specifically, in this embodiment, the elastic element 12 is a spring.

[0048] Preferably, the control key is a knob, button, or toggle switch. Specifically, in this embodiment, the control key is a knob.

[0049] Preferably, a second one-way valve 21 is provided inside the air inlet. Thus, when the inflatable airbag 2 is squeezed, the second one-way valve 21 prevents the gas inside the airbag from flowing to the outside. When the inflatable airbag 2 is released, the inflatable airbag 2 returns to its original shape, and the outside gas is drawn into the airbag through the second one-way valve 21.

[0050] Specifically, the rectal occluder includes an annular airbag 41 and a support tube 42. The support tube 42 extends in the proximal direction, with an inflation port 11 at the proximal end and a closed distal end. The annular airbag 41 is fixedly sleeved on the support tube 42, and the annular airbag 41 and the support tube 42 are sealed together. A through hole 44 is provided on the support tube 42, and the support tube 42 communicates with the annular airbag 41 through the through hole 44.

[0051] Preferably, the outer surface of the annular airbag 41 has at least one anti-slip portion 45 extending circumferentially around the annular airbag 41 and protruding from the outer surface of the annular airbag 41. In this way, when the annular airbag 41 is inflated, the anti-slip portion 45 contacts the rectal wall, providing greater friction, which is beneficial for fixing the rectal occluder at the target position in the rectum.

[0052] Preferably, the distal closure portion of the support tube 42 is a cone 43 with its tip pointing distally. The tip and sides of the cone 43 are smooth curved surfaces, and the cone 43 extends distally into an annular airbag 41. This facilitates the initial entry of the rectal occluder into the anus and into the rectum.

[0053] Example 2

[0054] The main difference between this embodiment and Embodiment 1 is:

[0055] like Figure 3 and Figure 4 As shown, the inflation valve includes a soft valve body 51 and a rigid valve shell that is tubular and covers the periphery of the soft valve body 51. An inflation channel 53 extends axially along the rigid valve shell through the soft valve body 51. The first end of the inflation channel 53 is open and perforated, while the second end is closed by the rigid valve shell, with the channel walls tightly fitted together. The housing of the inflation port 11 serves as the rigid valve shell, or the rigid valve shell is fixedly and sealed to the inflation port 11. The second end of the inflation tube can be inserted into and through the inflation channel 53 from the first end of the inflation channel 53, allowing the inner cavity of the rectal occluder to communicate with the inflation tube. The second end of the inflation tube is pulled out of the inflation channel 53, restoring the inflation channel 53 to its original state. The distal end of the rigid tube 32 is inserted into and through the inflation channel 53, with the inflation channel 53 tightly fitted to the outer periphery of the rigid tube 32, sealing the rigid tube 32 with the inflation channel 53.

[0056] Preferably, the inflation channel 53 is a tapered hole with a gradually decreasing diameter from the first end to the second end.

[0057] like Figure 5 As shown, the air outlet and air inlet of the inflatable airbag 2 are positioned opposite each other. A pair of protruding lips 22 are formed on the inner side of the air inlet, facing the air outlet. The air gap between the two lips 22 communicates with the air inlet. When the airbag 2 is inflated, the two lips 22 fit tightly together, sealing the air inlet and preventing gas from flowing out. When the airbag 2 is released, it returns to its original shape, and outside gas is drawn into the airbag through the air gap between the two lips 22. Thus, there is no need for a one-way valve inside the air inlet, resulting in a simpler structure and lower cost.

[0058] For details on the specific structure of the air intake, please refer to US Patent No. US20040059233A1, which will not be repeated here.

[0059] The remaining contents are the same as in Example 1, and will not be repeated here.

[0060] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0061] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0062] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "beneath" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0063] In the description of this specification, the terms "one embodiment," "some embodiments," "embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0064] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make modifications, alterations, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A rectal occlusion device, characterized in that, The rectal occluder, the inflatable air bag (2) and the inflation tube; The proximal end of the rectal occluder is provided with an inflation port (11) in which an inflation valve is arranged, the inflation valve is kept in a normally closed state; the first end of the inflation tube is fixedly connected with the gas outlet of the inflatable air bag (2), the second end of the inflation tube can be inserted into the inflation valve to make the inner cavity of the rectal occluder communicate with the inflation tube, the first end of the inflation tube is provided with a first one-way valve and a gas release valve (31), the gas release valve (31) is located at the distal side of the first one-way valve, the gas release valve (31) is provided with a control key for adjusting the opening degree of the valve, and the inflatable air bag (2) is provided with an air inlet; The second end of the inflation tube is inserted into the inflation valve, the gas release valve (31) is closed, the inflatable air bag (2) is squeezed, the air inlet prevents the air in the bag from flowing to the outside, and the air in the bag is forced to pass through the first one-way valve and the inflation tube to inflate the rectal occluder, the inflatable air bag (2) is released, the inflatable air bag (2) returns to the original state, and the outside air is sucked into the bag through the air inlet; adjust the control key to release the air in the rectal occluder to the outside.

2. The transrectal occlusion device of claim 1, wherein, The inflation tube comprises a rigid tube portion (32) and a flexible tube portion (33) which are sequentially communicated from the distal end to the proximal end, the distal end of the rigid tube portion (32) can be inserted into the inflation valve, and the proximal end of the flexible tube portion (33) is fixedly connected with the gas outlet of the inflatable air bag (2).

3. The transrectal occlusion device of claim 2, wherein, The length of the rigid tube portion (32) is 1-5 cm, and the length of the flexible tube portion (33) is 25-35 cm.

4. A rectal occlusion device according to any one of claims 1 to 3, characterized in that The inflation valve comprises a soft valve body (51) and a hard valve shell which is tubular and wrapped around the periphery of the soft valve body (51), an inflation channel (53) extending axially along the hard valve shell is formed through the soft valve body (51), the first end of the inflation channel (53) is in an open state in the form of a hole, and the second end of the inflation channel (53) is constrained by the hard valve shell to be in a closed state in which the channel walls are closely attached to each other; the shell of the inflation port (11) serves as the hard valve shell, or the hard valve shell is fixedly and sealingly connected to the inflation port (11); The second end of the inflation tube can be inserted into the inflation channel (53) from the first end of the inflation channel (53) and pass through the inflation channel (53) to make the inner cavity of the rectal occluder communicate with the inflation tube; the second end of the inflation tube is pulled out of the inflation channel (53), and the inflation channel (53) returns to the original state.

5. The transrectal occlusion device of claim 4, wherein, The inflation channel (53) is in the form of a tapered hole with a gradually decreasing hole diameter from the first end to the second end.

6. A device for the closure of a fistula according to any one of claims 1 to 3, characterized in that The inflation valve comprises an elastic member (12), a valve body (13) and a valve shell (14), the valve shell (14) is fixedly and sealingly mounted on the inflation port (11), the inner wall of the valve shell (14) has an annular step (15), the valve body (13) is inserted into the valve shell (14), and the valve body (13) is connected with the valve shell (14) through the elastic member (12); the valve body (13) has a baffle (17), under the action of no external force, the elastic member (12) drives the baffle (17) to always abut against the annular step (15) to close the valve shell (14); The second end of the inflation tube is inserted into the inflation valve, and the second end of the inflation tube can resist the baffle (17) to overcome the elastic action of the elastic member (12), so that the baffle (17) moves to be out of contact with the annular step (15), the valve shell (14) is opened, and the inner cavity of the rectal plug is communicated with the inflation tube.

7. A device for the closure of a fistula according to any one of claims 1 to 3, characterized in that A second one-way valve (21) is arranged in the air inlet.

8. A device for the closure of a fistula according to any one of claims 1 to 3, characterized in that The air outlet and the air inlet of the inflation air bag (2) are oppositely arranged, the inner side of the air inlet forms a pair of convex lip portions (22) facing the air outlet, and the air gap between the two lip portions (22) is communicated with the air inlet. The inflation air bag (2) is extruded, the two lip portions (22) are tightly attached to close the air inlet, and the gas in the bag is prevented from flowing to the outside; the inflation air bag (2) is released, and the inflation air bag (2) returns to its original state, and the outside air is sucked into the bag through the air gap between the two lip portions (22).

9. The transrectal occlusion device according to claim 1, characterized in that The control key is a knob, a button or a dial.

10. The transrectal occlusion device according to claim 1, characterized in that The rectal plug comprises an annular air bag (41) and a support tube (42); the support tube (42) extends in the proximal-distal direction, the proximal end of the support tube (42) has an inflation port (11), the distal end of the support tube (42) is closed, the annular air bag (41) is fixedly sleeved on the support tube (42), and the annular air bag (41) and the support tube (42) are sealingly arranged; a through hole is formed in the support tube (42), and the support tube (42) communicates with the annular air bag (41) through the through hole. The outer surface of the annular air bag (41) has at least one anti-skid portion (45) which extends circumferentially around the annular air bag (41) and protrudes from the outer surface of the annular air bag (41).

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