Rectum plugging device

Abstract

The utility model relates to a rectum plugging device which comprises a first annular air bag, a second annular air bag and a supporting tube. The supporting tube extends in the far-near direction, an opening is formed in the near end of the supporting tube, the far end of the supporting tube is closed, the first annular air bag and the second annular air bag are fixedly connected to the supporting tube in a sleeving mode and are sequentially arranged from near to far, and the first annular air bag and the supporting tube are arranged in a sealed mode. The second annular air bag and the supporting pipe are arranged in a sealed mode. A first through hole and a second through hole which are sequentially arranged from near to far are formed in the supporting pipe, the supporting pipe is communicated with the first annular air bag through the first through hole, and the supporting pipe is communicated with the second annular air bag through the second through hole; a first inflation switch is arranged at the opening, and a second inflation switch is arranged between the first through hole and the second through hole in the supporting pipe. After the first air bag is punctured, the second air bag can still open the rectum and block the deep position of the rectum at the same time.

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 exists to replace cotton in blocking the deep rectum, such as... Figure 1 and Figure 2 As shown, the rectal occluder includes a support tube 1 and an annular balloon. The annular balloon is fixedly sleeved on the support tube 1, and a seal is formed between the annular balloon and the support tube 1. The support tube 1 has a through hole communicating with the annular balloon, and the proximal end of the support tube 1 has an inflation port. The rectal occluder is used as follows: when the annular balloon is in a contracted state, the rectal occluder is placed in the target position in the rectum through the anus. Inflation is performed into the support tube 1 through the inflation port. The inflated gas enters the annular balloon through the through hole, causing the annular balloon to expand and simultaneously block the deep rectum.

[0005] However, the above-mentioned rectal occluders pose the following risks during use: the surgical instruments that enter the rectum are usually sharp at the distal end, which may puncture the circular balloon of the rectal occluder. In particular, when a high-frequency electrosurgical unit enters the rectum for surgical operations, its sharp distal end and concentrated energy make it easier to puncture the circular balloon of the rectal occluder.

[0006] Therefore, there is an urgent need for an improved rectal occlusion device. 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 sealing device in which the second airbag can still block the deep rectum while expanding the rectum after the first airbag is punctured.

[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 first annular airbag, a second annular airbag, and a support tube; the support tube extends in a proximal direction, with an opening at the proximal end and a closed end; the first and second annular airbags are fixedly sleeved on the support tube, and are arranged sequentially from proximal to distal; the first and second annular airbags are sealed to each other; the support tube has a first through hole and a second through hole arranged sequentially from proximal to distal; the support tube communicates with the first annular airbag through the first through hole and with the second through hole through the second annular airbag.

[0012] A first inflation switch is provided at the opening, and a second inflation switch is provided inside the support tube between the first through hole and the second through hole. The first inflation switch is normally closed. When subjected to an external force from outside the opening to inside the opening, the first inflation switch opens, allowing external gas to enter the first annular airbag through the support tube. The second inflation switch is normally closed. When the air pressure value of the first annular airbag is greater than that of the second annular airbag and reaches a preset value, the air pressure difference drives the second inflation switch to open, allowing gas from the first annular airbag to enter the second annular airbag through the support tube.

[0013] Optionally, the distal end of the support tube is a cone with its tip pointing towards the distance. The tip and sides of the cone are smooth curved surfaces, and the cone extends into a second annular airbag.

[0014] Optionally, the distal closure of the support tube is hemispherical.

[0015] Optionally, a tubular membrane is fitted onto the support tube. The membrane has a first connecting part, a first airbag part, a second connecting part, and a second airbag part connected sequentially from near to far. The first connecting part is sealed and fixedly connected to the outer surface of the support tube, and the second connecting part is sealed and fixedly connected to the outer surface of the support tube. The first airbag part serves as a first annular airbag, and the second airbag part serves as a second annular airbag.

[0016] Optionally, the first annular airbag is in a contracted state, the first airbag portion is in a folded state, the first annular airbag is inflated, and the first airbag portion is in a relaxed, wrinkle-free state; the second annular airbag is in a contracted state, the second airbag portion is in a folded state, the second annular airbag is inflated, and the second airbag portion is in a relaxed, wrinkle-free state.

[0017] Optionally, the first airbag portion in the folded state is in a folded state arranged sequentially along the proximal direction, and the second airbag portion in the folded state is in a folded state arranged sequentially along the proximal direction.

[0018] Optionally, the outer surface of the first annular airbag has at least one first anti-slip portion extending circumferentially around the first annular airbag and protruding from the outer surface of the first annular airbag; the outer surface of the second annular airbag has at least one second anti-slip portion extending circumferentially around the second annular airbag and protruding from the outer surface of the second annular airbag.

[0019] Optionally, the support tube has at least two oppositely arranged first through holes and at least two oppositely arranged second through holes.

[0020] Optionally, the first inflation switch includes a first elastic element, a first switching element, and a first switching tube. The first switching tube is fixedly installed at the opening and sealed to the support tube. The inner wall of the first switching tube has an annular step. The first switching element is inserted into the first switching tube and is connected to the first switching tube through the first elastic element. The first switching element has a baffle. When not subjected to external force, the elasticity of the first elastic element drives the baffle to always abut against the annular step to close the first switching tube. When the baffle is subjected to an external force from outside the opening to inside the opening, it overcomes the elasticity of the first elastic element, causing the baffle to move and disengage from the annular step. The first switching tube opens, allowing external gas to enter the first annular airbag through the support tube.

[0021] Optionally, the second inflation switch includes a second elastic element, a second switching element, and a second switching tube. The second switching tube is fixedly installed inside the support tube and sealed to the support tube. The inner wall of the second switching tube has an annular step. The second switching element is inserted into the second switching tube and is connected to the second switching tube through the second elastic element. The second switching element has a baffle. When not subjected to external force, the elasticity of the second elastic element drives the baffle to always abut against the annular step to close the second switching tube. When the baffle is driven by the pressure difference between the first annular airbag and the second annular airbag, which is greater than that between the first and second annular airbags, it overcomes the elasticity of the second elastic element, causing the baffle to move and disengage from the annular step. The second switching tube opens, allowing gas from the first annular airbag to enter the second annular airbag through the support tube.

[0022] (III) Beneficial Effects

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

[0024] The rectal occlusion device provided by this utility model has a second inflation switch that separates the first and second annular airbags. Even if the first annular airbag is punctured by surgical instruments during the operation, the second airbag can still block the deep rectum while opening the rectum, providing double insurance and ensuring the normal use of the rectal occlusion device. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the rectal occlusion device according to a specific embodiment of the present invention;

[0026] Figure 2 This is a cross-sectional schematic diagram of a rectal occlusion device according to a specific embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures

[0028] 1: Support tube;

[0029] 11: Opening; 12: First through hole; 13: Second through hole;

[0030] 21: First annular airbag; 22: Second annular airbag; 23: First connecting part; 24: Second connecting part; 25: First anti-slip part; 26: Second anti-slip part;

[0031] 31: First elastic element; 32: First switching element; 33: First switching tube; 34: First baffle; 35: Annular step;

[0032] 41: Second elastic element; 42: Second switching element; 43: Second switching tube; 44: Second baffle. Detailed Implementation

[0033] To better explain and facilitate understanding of this utility model, a detailed description of its specific embodiments is provided below in conjunction with the accompanying drawings. Herein, "near" refers to the side closer to the operator, and "far" refers to the side closer to the patient. The term "axial" as used herein refers to the near-far direction of the rectal occlusion device.

[0034] like Figure 1 and Figure 2As shown, this utility model provides a rectal occlusion device, including a first annular airbag 21, a second annular airbag 22, and a support tube 1; the support tube 1 extends in the proximal direction, with an opening 11 at the proximal end and a closed end at the distal end; the first annular airbag 21 and the second annular airbag 22 are both fixedly sleeved on the support tube 1, and are arranged sequentially from proximal to distal; the first annular airbag 21 and the support tube 1 are sealed together, and the second annular airbag 22 and the support tube 1 are also sealed together; the support tube 1 has a first through hole 12 and a second through hole 13 arranged sequentially from proximal to distal; the support tube 1 communicates with the first annular airbag 21 through the first through hole 12, and with the second annular airbag 22 through the second through hole 13. A first inflation switch is provided at the opening 11, and a second inflation switch is provided inside the support tube 1 between the first through hole 12 and the second through hole 13. The first inflation switch is normally closed. When subjected to an external force from the outside of the opening 11 to the inside of the opening 11, the first inflation switch opens, allowing external gas to enter the first annular airbag 21 through the support tube 1. The second inflation switch is normally closed. When the air pressure value of the first annular airbag 21 is greater than that of the second annular airbag 22 and reaches a preset value, the air pressure difference drives the second inflation switch to open, allowing gas from the first annular airbag 21 to enter the second annular airbag 22 through the support tube 1.

[0035] The rectal occlusion device provided by this utility model is used as follows: the first inflation switch and the second inflation switch are kept in a normally closed state, and the first annular airbag 21 and the second annular airbag 22 are both in a contracted state, which facilitates placing the rectal occlusion device at the target position in the rectum through the anus; then, the inflation tool is inserted into the rectum through the anus and cooperates with the first inflation switch. The first inflation switch is opened by the external force provided by the inflation tool from the outside of the opening 11 to the inside of the opening 11, allowing the inflation switch to inflate the first annular airbag 21 through the support tube 1. During the inflation of the first annular airbag 21... During the process, when the air pressure of the first annular airbag 21 is greater than that of the second annular airbag 22 and gradually increases to a preset value, the air pressure difference drives the second inflation switch to open, allowing gas from the first annular airbag 21 to enter the second annular airbag 22 through the support tube 1, thereby inflating the second annular airbag 22. Ultimately, both the first annular airbag 21 and the second annular airbag 22 can be inflated to the expanded state, opening the rectum while sealing the deep part of the rectum. After inflation is completed, both the first inflation switch and the second inflation switch return to the normally closed state, so that both the first annular airbag 21 and the second annular airbag 22 remain in the expanded state.

[0036] The rectal occlusion device provided by this utility model has a second inflation switch that separates the first annular airbag 21 and the second annular airbag 22. Even if the first annular airbag 21 is punctured by surgical instruments during the operation, the second airbag can still block the deep rectum while opening the rectum, providing double insurance and ensuring the normal use of the rectal occlusion device.

[0037] It should be noted that the external force provided by the inflation tool, directed from the outside of the opening 11 to the inside of the opening 11, acting on the first inflation switch can be the direct thrust provided by the contact between the inflation tool and the first inflation switch, or the thrust provided by the pressure difference between the inflation tool and the first annular airbag 21.

[0038] Preferably, the distal closure portion of the support tube 1 is a cone with its tip pointing distally, the tip and sides of the cone being smooth curved surfaces, and the cone extending distally into a second annular air bladder 22. This facilitates the initial entry of the rectal sealing device into the anus and insertion into the rectum.

[0039] More preferably, in this embodiment, the distal closure portion of the support tube 1 is hemispherical.

[0040] Preferably, a tubular sheath is fitted onto the support tube 1. The sheath has a first connecting portion 23, a first air bladder portion, a second connecting portion 24, and a second air bladder portion connected sequentially from near to far. The first connecting portion 23 is sealed and fixedly connected to the outer surface of the support tube 1, and the second connecting portion 24 is sealed and fixedly connected to the outer surface of the support tube 1. The first air bladder portion serves as a first annular air bladder 21, and the second air bladder portion serves as a second annular air bladder 22. This facilitates the manufacturing of the rectal occlusion device.

[0041] Furthermore, in this embodiment, the first connecting part 23 is bonded to the outer surface of the support tube 1, and the second connecting part 24 is bonded to the outer surface of the support tube 1.

[0042] Preferably, the first annular airbag 21 is in a contracted state, the first airbag portion is in a folded state, the first annular airbag 21 is inflated, and the first airbag portion unfolds from the folded state to a smooth, wrinkle-free state; the second annular airbag 22 is in a contracted state, the second airbag portion is in a folded state, the second annular airbag 22 is inflated, and the second airbag portion unfolds from the folded state to a smooth, wrinkle-free state. It should be noted that when the first annular airbag 21 is inflated, the first airbag portion may or may not undergo elastic deformation; similarly, when the second annular airbag 22 is inflated, the second airbag portion may or may not undergo elastic deformation.

[0043] More preferably, the first airbag portion in the folded state is folded in a sequentially arranged manner along the proximal direction, and the second airbag portion in the folded state is folded in a sequentially arranged manner along the proximal direction.

[0044] Preferably, the outer surface of the first annular airbag 21 has at least one first anti-slip portion 25 extending circumferentially around and protruding from the outer surface of the first annular airbag 21; the outer surface of the second annular airbag 22 has at least one second anti-slip portion 26 extending circumferentially around and protruding from the outer surface of the second annular airbag 22. Thus, when the first annular airbag 21 and the second annular airbag 22 are inflated, both the first anti-slip portion 25 and the second anti-slip portion 26 are in contact with the rectal wall, providing greater friction and facilitating the fixation of the rectal occluder at the target position in the rectum.

[0045] Furthermore, in this embodiment, the outer surface of the first annular airbag 21 has four rings of first anti-slip portions 25; the outer surface of the second annular airbag 22 has four rings of second anti-slip portions 26.

[0046] Preferably, the support tube 1 has at least two oppositely arranged first through holes 12 and at least two oppositely arranged second through holes 13. This facilitates the inflation of the first annular airbag 21 and the second annular airbag 22 through the support tube 1.

[0047] Preferably, the first inflation switch includes a first elastic element 31, a first switching element 32, and a first switching tube 33. The first switching tube 33 is fixedly installed at the opening 11 and sealed to the support tube 1. The inner wall of the first switching tube 33 has an annular step 35. The first switching element 32 is inserted into the first switching tube 33 and is connected to the first switching tube 33 through the first elastic element 31. The first switching element 32 has a first baffle 34. When not subjected to external force, the elasticity of the first elastic element 31 drives the first baffle 34 to always abut against the annular step 35 to close the first switching tube 33. When the first baffle 34 is subjected to an external force from outside the opening 11 to inside the opening 11, it overcomes the elasticity of the first elastic element 31, causing the first baffle 34 to move to disengage from the annular step 35. The first switching tube 33 opens, allowing external gas to enter the first annular airbag 21 through the support tube 1.

[0048] Preferably, the second inflation switch includes a second elastic element 41, a second switching element 42, and a second switching tube 43. The second switching tube 43 is fixedly installed inside the support tube 1 and is sealed to the support tube 1. The inner wall of the second switching tube 43 has an annular step 35. The second switching element 42 is inserted into the second switching tube 43 and is connected to the second switching tube 43 through the second elastic element 41. The second switching element 42 has a second baffle 44. When not subjected to external force, the elasticity of the second elastic element 41 drives the second baffle 44 to always abut against the annular step 35 to close the second switching tube 43. The second baffle 44 is driven by the pressure difference between the first annular airbag 21 and the second annular airbag 22, which is greater than that between the first annular airbag 21 and the second annular airbag 22, to overcome the elasticity of the second elastic element 41 and move the second baffle 44 to disengage from the annular step 35. The second switching tube 43 opens, allowing the gas in the first annular airbag 21 to enter the second annular airbag 22 through the support tube 1.

[0049] Specifically, in this embodiment, both the first elastic element 31 and the second elastic element 41 are springs.

[0050] 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.

[0051] 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.

[0052] 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.

[0053] 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.

[0054] 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, It includes a first annular airbag (21), a second annular airbag (22), and a support tube (1); The support tube (1) extends in the proximal direction. The proximal end of the support tube (1) has an opening (11), and the distal end of the support tube (1) is closed. The first annular airbag (21) and the second annular airbag (22) are fixedly sleeved on the support tube (1). The first annular airbag (21) and the second annular airbag (22) are arranged sequentially from proximal to distal. The first annular airbag (21) is sealed with the support tube (1), and the second annular airbag (22) is sealed with the support tube (1). The support tube (1) has a first through hole (12) and a second through hole (13) arranged sequentially from proximal to distal. The support tube (1) is connected to the first annular airbag (21) through the first through hole (12), and the support tube (1) is connected to the second annular airbag (22) through the second through hole (13). A first inflation switch is provided at the opening (11), and a second inflation switch is provided in the support tube (1) between the first through hole (12) and the second through hole (13). The first inflation switch is kept in a normally closed state. When subjected to an external force from outside the opening (11) to inside the opening (11), the first inflation switch opens, allowing external gas to enter the first annular airbag (21) through the support tube (1). The second inflation switch is kept in a normally closed state. When the air pressure value of the first annular airbag (21) is greater than that of the second annular airbag (22) and reaches a preset value, the air pressure difference drives the second inflation switch to open, allowing the gas in the first annular airbag (21) to enter the second annular airbag (22) through the support tube (1).

2. The transrectal occlusion device of claim 1, wherein, The distal end of the support tube (1) is a cone with its tip pointing to the distance. The tip and sides of the cone are smooth curved surfaces, and the cone extends into the distance to form a second annular airbag (22).

3. The transrectal occlusion device of claim 2, wherein, The distal closed portion of the support tube (1) is hemispherical.

4. The transrectal occlusion device of claim 1, wherein, A tubular membrane is fitted onto the support tube (1). The membrane has a first connecting part (23), a first airbag part, a second connecting part (24), and a second airbag part connected sequentially from near to far. The first connecting part (23) is sealed and fixedly connected to the outer surface of the support tube (1), and the second connecting part (24) is sealed and fixedly connected to the outer surface of the support tube (1). The first airbag part is used as a first annular airbag (21), and the second airbag part is used as a second annular airbag (22).

5. The transrectal occlusion device of claim 4, wherein, The first annular airbag (21) is in a contracted state, the first airbag part is in a folded state, the first annular airbag (21) is in an inflated state, and the first airbag part is in a relaxed and wrinkle-free state; the second annular airbag (22) is in a contracted state, the second airbag part is in a folded state, the second annular airbag (22) is in an inflated state, and the second airbag part is in a relaxed and wrinkle-free state.

6. The transrectal occlusion device of claim 4, wherein, The first airbag section in the folded state is folded in sequence along the proximal direction, and the second airbag section in the folded state is folded in sequence along the proximal direction.

7. The transrectal occlusion device of claim 1, wherein, The outer surface of the first annular airbag (21) has at least one first anti-slip portion (25) that extends circumferentially around the first annular airbag (21) and protrudes from the outer surface of the first annular airbag (21); the outer surface of the second annular airbag (22) has at least one second anti-slip portion (26) that extends circumferentially around the second annular airbag (22) and protrudes from the outer surface of the second annular airbag (22).

8. The transrectal occlusion device of claim 1, wherein, The support tube (1) has at least two oppositely arranged first through holes (12) and at least two oppositely arranged second through holes (13).

9. The transrectal occlusion device of claim 1, wherein, The first inflation switch includes a first elastic element (31), a first switching element (32) and a first switching tube (33). The first switching tube (33) is fixedly installed at the opening (11) and sealed to the support tube (1). The inner wall of the first switching tube (33) has an annular step (35). The first switching element (32) is inserted into the first switching tube (33). The first switching element (32) is connected to the first switching tube (33) through the first elastic element (31). The first switch (32) has a first baffle (34). When not subjected to external force, the elastic action of the first elastic member (31) drives the first baffle (34) to always abut against the annular step (35) to close the first switch tube (33). When the first baffle (34) is subjected to an external force from the outside of the opening (11) to the inside of the opening (11), it overcomes the elastic action of the first elastic member (31) and causes the first baffle (34) to move to disengage from the annular step (35). The first switch tube (33) opens, allowing external gas to enter the first annular airbag (21) through the support tube (1).

10. The transrectal occlusion device of claim 1, wherein, The second inflation switch includes a second elastic element (41), a second switching element (42), and a second switching tube (43). The second switching tube (43) is fixedly installed inside the support tube (1) and is sealed to the support tube (1). The inner wall of the second switching tube (43) has an annular step (35). The second switching element (42) is inserted into the second switching tube (43). The second switching element (42) is connected to the second switching tube (43) through the second elastic element (41). The second switch (42) has a second baffle (44). When not subjected to external force, the elastic action of the second elastic member (41) drives the second baffle (44) to always abut against the annular step (35) to close the second switch tube (43). The second baffle (44) is driven by the pressure difference between the first annular airbag (21) and the second annular airbag (22), which is greater than that between the first annular airbag (21) and the second annular airbag (22), to overcome the elastic action of the second elastic member (41) and move the second baffle (44) to disengage from the annular step (35). The second switch tube (43) opens, allowing the gas in the first annular airbag (21) to enter the second annular airbag (22) through the support tube (1).

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