Air inflation type channel device for taking out tumor specimen through anus after colorectal operation

Abstract

The invention relates to the technical field of operation channels, and discloses an air inflation type channel device for taking out tumor specimens through the anus after colorectal operation, the air inflation type channel device comprises a main body, the right side of the main body is fixedly connected with a disc, the right side of the disc is fixedly connected with a top column, the side, close to the top column, of the disc is fixedly connected with a plurality of L-shaped plates, and the L-shaped plates are circumferentially arrayed with the top column as the center. Expansion of the outer air bag can pull the arc-shaped plate to rise along with the expansion speed of the outer air bag, when the arc-shaped plate rises, the arc-shaped plate pulls the rotating plate to synchronously rise, at the moment, when the rotating plate rises, the rotating plate can pull the hollow block to relatively move in the sliding groove plate along the sliding groove, and when inflation of the outer air bag is stopped, the hollow block can move in the sliding groove plate along the sliding groove. At the moment, the movable plate is clamped at the right-angle position of the oblique teeth through a third rear spring, so that the compression resisting mechanism cannot return backwards during supporting, the contractility of the sphincter is borne through the supported arc-shaped plate, and deformation caused by local pressure of the outer air bag is avoided.

Description

Technical Field

[0001] This invention relates to the field of surgical access technology, specifically to an air-inflatable access device for transanal removal of tumor specimens after colorectal surgery. Background Technology

[0002] With the growing acceptance of minimally invasive concepts and the rapid development of minimally invasive techniques and equipment, surgery is undergoing a significant revolution, and minimally invasive surgery has undeniably become a major player in the modern surgical field. Trauma, pain, scarring, and negative psychological suggestions have long been considered inevitable byproducts of surgery. In recent years, the emergence of natural orifice specimen extraction surgery (NOSES) has provided a new direction for minimally invasive treatment. Epidemiological data in my country shows that 60% of colorectal cancer cases occur in the rectum, especially in the low rectum, with 15% of patients developing the disease before the age of 30. Furthermore, Chinese patients generally have lower BMIs, making NOSES more technically feasible. Literature indicates that NOSES for colorectal cancer is technically feasible, with a safety profile similar to traditional laparoscopic surgery, no significant increase in complications, and better aesthetic results, making it more acceptable to patients. When collecting tumor samples from patients, it is often necessary to use an air-filled channel to dilate the patient's anus. However, existing devices typically expand the anus by injecting gas into the balloon. During expansion, the sphincter muscles at the anus are more elastic than those in the rectum. This compression can deform the balloon, potentially causing some parts to over-expand while others remain under-expanded, thus affecting the treatment outcome. Summary of the Invention

[0003] The purpose of this invention is to provide an air-inflatable channel device for transanal removal of tumor specimens after colorectal surgery, so as to solve the problems mentioned in the background art.

[0004] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution: This invention relates to an air-filled channel device for transanal tumor specimen extraction after colorectal surgery, comprising a main body, a disc fixedly connected to the right side of the main body, a top column fixedly connected to the right side of the disc, and a plurality of L-plates fixedly connected to the side of the disc near the top column, the plurality of L-plates being arranged in a circumferential array around the top column, and further comprising; The support mechanism includes an inner cylinder inserted into the outer surface of the top column. A second ring is fixedly connected to the left side of the inner cylinder, and a first ring is fixedly connected to the right side of the inner cylinder. A semi-circular ring is fixedly connected to the side of the second ring away from the inner cylinder. Several slots are provided on the right side of the first ring, and square grooves are provided inside the slots. A fixed column is fixedly connected to the left inner wall of one of the square grooves. The pressure-resistant mechanism includes several sliding groove plates fixedly connected to the inner wall of the bottom of the outer airbag. The several sliding groove plates are arranged in a circumferential array around the central axis of the inner cylinder. Several helical teeth are fixedly connected to the bottom left and right inner walls of the several sliding groove plates. The several left and right helical teeth are symmetrically distributed around the central axis of the sliding groove plates. Several slots are opened at the bottom of the sliding groove plates. Sliding grooves are opened on the front and back inner walls of the sliding groove plates.

[0005] Furthermore, an obtuse-angled plate is rotatably connected to the outer surface of the fixed column, a top plate is fixedly connected to the front of the obtuse-angled plate, a baffle is fixedly connected to the top of the obtuse-angled plate, an outer airbag is fixedly connected to the top of the inner cylinder, and several through grooves are opened on the bottom inner wall of the outer airbag. An air inlet is opened on the side of the square groove near the baffle, and the air inlet extends to the left side of the first ring. An air inlet pipe is fixedly connected to the side of the square groove away from the baffle. A rectangular groove is opened on the left side of the second ring, and the rectangular groove extends to the right side of the second ring. A semi-circular ring is fixedly connected to the end of the second ring away from the inner cylinder, and several sliding grooves are opened on the bottom inner wall of the semi-circular ring.

[0006] Furthermore, two hollow blocks are slidably connected inside the two chute. A connecting lug is fixedly connected to the top of the hollow block. A movable plate is slidably connected inside the hollow block. A rotating plate is rotatably connected inside the connecting lug. The two rotating plates are arranged in a cross configuration. An arc-shaped plate is rotatably connected to the end of the rotating plate away from the connecting lug. A vertical plate is fixedly connected to the side of the arc-shaped plate near the central axis of the chute plate. An arc-shaped plate is fixedly connected to the opposite side of the two vertical plates. A spring is fixedly connected to the top of the movable plate. The top of the spring is fixedly connected to the inner wall of the top of the hollow block.

[0007] Furthermore, the outer surface of the main body is provided with a deformation mechanism, which includes a square airbag fixedly connected to one side of the two vertical plates. Two air injection tubes are fixedly connected to the left and right sides of the square airbag. The two air injection tubes penetrate to the outside of the vertical plates. The side of the air injection tube away from the square airbag penetrates to the top of the arc plate. An inner airbag is fixedly connected to the end of the air injection tube away from the square airbag.

[0008] Furthermore, a connecting mechanism is provided on the outer surface of the main body. The connecting mechanism includes a connecting plate fixedly connected to the right side of one of the hollow blocks. A limit plate is fixedly connected to the outer surface of the connecting plate, and a C-shaped block is fixedly connected to the right side of the connecting plate.

[0009] Furthermore, the C-shaped block passes through the right side of the square groove and is slidably connected to the inside of the connecting plate. The four corners of the limiting plate near the C-shaped block are respectively fixedly connected to spring one. The end of spring one away from the limiting plate is fixedly connected to a sealing plate. The sealing plate is slidably connected to the outer surface of the connecting plate and fits against the sliding groove.

[0010] Furthermore, a closing mechanism is provided on the right side of the main body. The closing mechanism includes a swing plate rotatably connected inside the C-shaped block. A connecting ear 2 is rotatably connected to the side of the swing plate away from the C-shaped block. An arc-shaped triangular plate is fixedly connected to the top of the connecting ear 2. A slot is opened on the side of the arc-shaped triangular plate near the swing plate. A swing block is rotatably connected inside the slot. The end of the swing block away from the arc-shaped triangular plate is slidably connected inside the sliding groove.

[0011] Furthermore, an auxiliary mechanism is provided on the outer surface of the support mechanism. The auxiliary mechanism includes a top block that is slidably connected inside the slot. A lifting plate is fixedly connected to the bottom of the top block. An arc-shaped spring plate is fixedly connected to the bottom of the lifting plate. Springs are fixedly connected to the top left and right sides of the lifting plate. Springs are fixedly connected to the bottom of the connecting plate.

[0012] The present invention has the following beneficial effects: 1. In this invention, when the external airbag inflates, the expansion of the external airbag pulls the arc-shaped plate upwards at the same speed as the airbag's expansion. As the arc-shaped plate rises, it pulls the rotating plate upwards synchronously. When the rotating plate rises, it pulls the hollow block to move relative to each other along the sliding groove inside the sliding groove plate. When the inflation of the external airbag stops, the moving plate is locked at the right angle of the helical teeth by the rear spring, preventing the anti-pressure mechanism from returning to its original position during support. The arc-shaped plate, which is supported, bears the contraction force of the sphincter muscle, avoiding deformation of the external airbag due to local pressure.

[0013] 2. In this invention, after the arc-shaped plate is supported, the deformation mechanism can reduce the impact of intestinal peristalsis. When the intestines peristalse, the peristaltic intestinal wall first squeezes the top block through the outer air bladder. At this time, the gas inside the inner air bladder enters the square air bladder through the air injection tube. The square air bladder receives the gas from the inner air bladders at both ends and expands. The expanded square air bladder pushes against the vertical plate and the arc-shaped plate, making the arc-shaped plates at both ends form long arcs. When the middle of the arc-shaped plate is squeezed by intestinal peristalsis, it squeezes the square air bladder through the vertical plate, allowing gas to enter the inner air bladder. At this time, the arc-shaped plates at both ends will be obtuse angles, and the inner air bladder will expand. Through the deformation force of the arc-shaped plate and the inner air bladder, it can better adapt to intestinal peristalsis and deform with the deformation of the intestine, thereby reducing the displacement of the device caused by peristalsis.

[0014] 3. In this invention, when the hollow block moves relative to the other side, the swing plate pulls the arc-shaped triangular plates apart, and as the inner air bladder continues to move, the arc-shaped triangular plates slide into the semi-circular ring via the swing block. At this time, the multiple arc-shaped triangular plates are in an open state, allowing the removed tumor to be placed into the inner cylinder. When the hollow block returns to its original position, the swing plate pushes the arc-shaped triangular plates to close them. At this time, the closed arc-shaped triangular plates can effectively seal the inserted tumor inside the inner cylinder, preventing the removed tumor from scattering outside and avoiding the shedding and spread of tumor cells and the resulting complications during the removal of tumor specimens.

[0015] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the main structure of the present invention; Figure 4 This is a schematic diagram of the support mechanism structure of the present invention; Figure 5 for Figure 4 Enlarged view at point B in the middle; Figure 6 This is a schematic diagram of the anti-compression mechanism of the present invention; Figure 7 for Figure 2 Enlarged view at point C; Figure 8 This is a schematic diagram of the deformation mechanism structure of the present invention; Figure 9 This is a schematic diagram of the front structure of the anti-compression mechanism of the present invention; Figure 10 This is a schematic diagram of the closing mechanism of the present invention; Figure 11 for Figure 2 Enlarged view of point A in the middle.

[0018] The attached diagram lists the components represented by each number as follows: In the diagram: 1. Main body; 101. Disc; 102. Top column; 103. L-plate; 2. Support mechanism; 201. Inner cylinder; 202. Ring 1; 203. Ring 2; 204. Semi-circular ring; 205. Slot; 206. Fixed column; 207. Obtuse angle plate; 208. Top plate; 209. Baffle; 210. Air inlet pipe; 3. Anti-pressure mechanism; 301. Sliding groove plate; 302. Helical tooth; 303. Slide groove; 304. Hollow block; 305. Connecting ear 1; 306. Rotating plate; 307. Moving plate; 308. Arc-shaped plate; 309. Vertical plate; 4. Deformation mechanism; 401. Square airbag; 402. Inflation pipe; 403. Inner airbag; 5. Connecting mechanism; 501. Connecting plate; 502. Limiting plate; 503. C-shaped block; 504. Sealing plate; 6. Closing mechanism; 601. Swinging plate; 602. Connecting ear 2; 603. Arc-shaped triangular plate; 604. Swinging block; 7. Auxiliary mechanism; 701. Lifting plate; 702. Arc-shaped spring plate; 703. Top block. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1, please refer to Figures 1-11 As shown, the present invention is an air-filled channel device for transanal removal of tumor specimens after colorectal surgery, comprising a main body 1, a disc 101 fixedly connected to the right side of the main body 1, a top column 102 fixedly connected to the right side of the disc 101, and a plurality of L-plates 103 fixedly connected to the side of the disc 101 near the top column 102, the plurality of L-plates 103 being arranged in a circular array around the top column 102, and further comprising; Support mechanism 2 includes an inner cylinder 201 inserted into the outer surface of the top column 102. A second ring 203 is fixedly connected to the left side of the inner cylinder 201, and a first ring 202 is fixedly connected to the right side of the inner cylinder 201. A semi-circular ring 204 is fixedly connected to the side of the second ring 203 away from the inner cylinder 201. Several slots 205 are provided on the right side of the first ring 202. A square groove is provided inside the slot 205. A fixed column 206 is fixedly connected to the left inner wall of one of the square grooves. The pressure-resistant mechanism 3 includes several sliding groove plates 301 fixedly connected to the inner wall of the bottom of the outer airbag. The several sliding groove plates 301 are arranged in a circumferential array around the central axis of the inner cylinder 201. Several helical teeth 302 are fixedly connected to the bottom left and right inner walls of the several sliding groove plates 301. The several left and right helical teeth 302 are symmetrically distributed around the central axis of the sliding groove plates 301. Several slots are opened at the bottom of the sliding groove plates 301. Sliding grooves 303 are opened on the front and back inner walls of the sliding groove plates 301.

[0021] An obtuse-angle plate 207 is rotatably connected to the outer surface of the fixed column 206. A top plate 208 is fixedly connected to the front of the obtuse-angle plate 207. A baffle 209 is fixedly connected to the top of the obtuse-angle plate 207. An outer airbag is fixedly connected to the top of the inner cylinder 201. Several through grooves are opened on the bottom inner wall of the outer airbag. An air inlet is opened on the side of the square groove near the baffle 209. The air inlet extends to the left side of the first ring 202. An air inlet pipe 210 is fixedly connected to the side of the square groove away from the baffle 209. A rectangular groove is opened on the left side of the second ring 203. The rectangular groove extends to the right side of the second ring 203. A semi-circular ring 204 is fixedly connected to the end of the second ring 203 away from the inner cylinder 201. Several sliding grooves are opened on the bottom inner wall of the semi-circular ring 204.

[0022] Two hollow blocks 304 are slidably connected inside the two sliding grooves 303. A connecting ear 305 is fixedly connected to the top of the hollow block 304. A movable plate 307 is slidably connected inside the hollow block 304. A rotating plate 306 is rotatably connected inside the connecting ear 305. The two rotating plates 306 are arranged in a cross pattern. An arc-shaped plate 308 is rotatably connected to the end of the rotating plate 306 away from the connecting ear 305. A vertical plate 309 is fixedly connected to the side of the arc-shaped plate 308 near the central axis of the sliding groove plate 301. An arc-shaped plate is fixedly connected to the opposite side of the two vertical plates 309. A spring 3 is fixedly connected to the top of the movable plate 307. The top of the spring 3 is fixedly connected to the top inner wall of the hollow block 304.

[0023] The outer surface of the main body 1 is provided with a deformation mechanism 4. The deformation mechanism 4 includes a square airbag 401 fixedly connected to one side of the two vertical plates 309. Two air injection tubes 402 are fixedly connected to the left and right sides of the square airbag 401. The two air injection tubes 402 extend to the outside of the vertical plate 309. The side of the air injection tube 402 away from the square airbag 401 extends to the top of the arc plate 308. An inner airbag 403 is fixedly connected to the end of the air injection tube 402 away from the square airbag 401.

[0024] In use, first insert the main body 1 into the inner cylinder 201 and rotate it slightly to the right. At this time, the top column 102 will be inserted into the square slot through the slot 205. When the main body 1 is rotated, the second ring 203 will push against the top plate 208, moving the top plate 208 to the right. At this time, the baffle 209 will disengage from the air inlet. Then, place the entire device into the patient's body through the anus. At this time, the closed arc-shaped triangular plate 603 is hemispherical, which can guide the device into place. After entering, inflation begins from the air inlet pipe 210. When rotated in the opposite direction again, the baffle 209 will return to its original position and block the air inlet. At this time, pull out the main body 1. When the gas inflates the external airbag, this... The expansion of the external airbag pulls the arc plate 308 upwards at the same speed as the airbag expansion. When the arc plate 308 rises, it pulls the rotating plate 306 upwards synchronously. When the rotating plate 306 rises, it pulls the hollow block 304 to move relative to the sliding plate 301 along the slide groove 303. When the inflation of the external airbag stops, the moving plate 307 is locked at the right angle of the helical tooth 302 by the rear spring 3, so that the anti-pressure mechanism 3 cannot return to its original position when providing support. The arc plate 308, which is supported, bears the contraction force of the sphincter muscle and avoids the deformation of the external airbag due to local pressure.

[0025] Example 2, please refer to Figures 1-11 As shown, the outer surface of the main body 1 is provided with a connecting mechanism 5. The connecting mechanism 5 includes a connecting plate 501 fixedly connected to the right side of one of the hollow blocks 304. A limit plate 502 is fixedly connected to the outer surface of the connecting plate 501. A C-shaped block 503 is fixedly connected to the right side of the connecting plate 501.

[0026] C-shaped block 503 passes through the right side of square groove and is slidably connected to the inside of connecting plate 501. Spring 1 is fixedly connected to the four corners of the limiting plate 502 near C-shaped block 503. A sealing plate 504 is fixedly connected to the end of spring 1 away from the limiting plate 502. The sealing plate 504 is slidably connected to the outer surface of connecting plate 501 and fits against the sliding groove.

[0027] A closing mechanism 6 is provided on the right side of the main body 1. The closing mechanism 6 includes a swing plate 601 rotatably connected inside the C-shaped block 503. A connecting ear 602 is rotatably connected to the side of the swing plate 601 away from the C-shaped block 503. An arc-shaped triangular plate 603 is fixedly connected to the top of the connecting ear 602. A slot is opened on the side of the arc-shaped triangular plate 603 near the swing plate 601. A swing block 604 is rotatably connected inside the slot. The end of the swing block 604 away from the arc-shaped triangular plate 603 is slidably connected inside the sliding groove.

[0028] The outer surface of the support mechanism 2 is provided with an auxiliary mechanism 7. The auxiliary mechanism 7 includes a top block 703 that is slidably connected inside the slot. The bottom of the top block 703 is fixedly connected to a lifting plate 701. The bottom of the lifting plate 701 is fixedly connected to an arc-shaped spring plate 702. The top left and right sides of the lifting plate 701 are both fixedly connected to springs 2, which are fixedly connected to the bottom of the connecting plate 501.

[0029] In use, after the arc-shaped plate 308 is supported, the deformation mechanism 4 above can reduce and mitigate the impact of intestinal peristalsis. When the intestines peristalse, the peristaltic intestinal wall first squeezes the top block 703 through the outer air bladder. At this time, the gas inside the inner air bladder 403 enters the square air bladder 401 through the air injection tube 402. The square air bladder 401 receives the gas from the inner air bladders 403 at both ends and expands. The expanded square air bladder 401 then pushes against the vertical plate 309 and the arc-shaped plate 308, causing the arc-shaped plate 308 at both ends to... Shaped as a long arc, when the middle of the arc-shaped plate 308 is squeezed by intestinal peristalsis, it will compress the square air bladder 401 through the vertical plate 309, allowing gas to enter the inner air bladder 403. At this time, the arc-shaped plates 308 at both ends will be obtuse angles, and the inner air bladder 403 will expand. Through the deformation force of the arc-shaped plate 308 and the inner air bladder 403, it can better adapt to intestinal peristalsis and deform with the deformation of the intestine, thereby reducing the displacement of the device caused by peristalsis. When the hollow block 304 moves relative to the intestinal wall, it will be oscillated by the swing plate 601. Pulling the arc-shaped triangular plates 603 separates them, and as the inner air bladder 403 continues to move, the arc-shaped triangular plates 603 slide into the semi-circular ring 204 via the swing block 604. At this time, the multiple arc-shaped triangular plates 603 are in an open state, allowing the excised tumor to be placed into the inner cylinder 201. When the hollow block 304 returns to its original position, the swing plate 601 pushes the arc-shaped triangular plates 603 to close them. At this time, the closed arc-shaped triangular plates 603 can effectively seal the inserted tumor within the inner cylinder 201, preventing the tumor from being cut. In addition to the scattered tumor, this method avoids the shedding and spread of tumor cells and the resulting complications during the tumor specimen removal process. After the process is completed, the inner cylinder 201 is reinserted and rotated again. At this time, the gas is released from the air outlet at the baffle 209, and the top column 102 pushes the arc-shaped spring plate 702 and moves the lifting plate 701 upward. At this time, the top block 703 pushes the moving plate 307 out of the helical tooth 302. At this time, the contraction of the external airbag will close the multiple arc-shaped triangular plates 603 through the swing plate 601, and then it is pulled out of the body.

[0030] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. An air-filled channel device for transanal tumor specimen removal after colorectal surgery, comprising a main body (1), wherein a disc (101) is fixedly connected to the right side of the main body (1), a top column (102) is fixedly connected to the right side of the disc (101), and a plurality of L-plates (103) are fixedly connected to the side of the disc (101) near the top column (102), wherein the plurality of L-plates (103) are arranged in a circular array around the top column (102), characterized in that, Also includes; The support mechanism (2) includes an inner cylinder (201) inserted into the outer surface of the top column (102). A second ring (203) is fixedly connected to the left side of the inner cylinder (201), and a first ring (202) is fixedly connected to the right side of the inner cylinder (201). A semi-circular ring (204) is fixedly connected to the side of the second ring (203) away from the inner cylinder (201). Several slots (205) are opened on the right side of the first ring (202). A square groove is opened inside the slot (205), and a fixed column (206) is fixedly connected to the left inner wall of one of the square grooves. The pressure-resistant mechanism (3) includes several sliding groove plates (301) fixedly connected to the inner wall of the bottom of the outer airbag. The several sliding groove plates (301) are arranged in a circumferential array around the central axis of the inner cylinder (201). Several helical teeth (302) are fixedly connected to the bottom left and right inner walls of the several sliding groove plates (301). The several left and right helical teeth (302) are symmetrically distributed around the central axis of the sliding groove plates (301). Several slots are opened at the bottom of the sliding groove plates (301). Slide grooves (303) are opened on the front and back inner walls of the sliding groove plates (301).

2. The pneumatic channel device for transanal removal of tumor specimens after colorectal surgery according to claim 1, characterized in that: An obtuse-angle plate (207) is rotatably connected to the outer surface of the fixed column (206). A top plate (208) is fixedly connected to the front of the obtuse-angle plate (207). A baffle (209) is fixedly connected to the top of the obtuse-angle plate (207). An outer airbag is fixedly connected to the top of the inner cylinder (201). Several through grooves are opened on the bottom inner wall of the outer airbag. An air inlet is opened on the side of the square groove near the baffle (209). The air inlet extends to the left side of the first ring (202). An air inlet pipe (210) is fixedly connected to the side of the square groove away from the baffle (209). A rectangular groove is opened on the left side of the second ring (203). The rectangular groove extends to the right side of the second ring (203). A semi-circular ring (204) is fixedly connected to the end of the second ring (203) away from the inner cylinder (201). Several sliding grooves are opened on the bottom inner wall of the semi-circular ring (204).

3. The pneumatic channel device for transanal removal of tumor specimens after colorectal surgery according to claim 2, characterized in that: Two hollow blocks (304) are slidably connected inside the two sliding grooves (303). A connecting ear (305) is fixedly connected to the top of the hollow block (304). A movable plate (307) is slidably connected inside the hollow block (304). A rotating plate (306) is rotatably connected inside the connecting ear (305). The two rotating plates (306) are arranged in a cross configuration. An arc plate (308) is rotatably connected to the end of the rotating plate (306) away from the connecting ear (305). A vertical plate (309) is fixedly connected to the side of the arc plate (308) near the central axis of the sliding groove plate (301). An arc plate is fixedly connected to the opposite side of the two vertical plates (309). A spring (307) is fixedly connected to the top of the movable plate (307). The top of the spring (307) is fixedly connected to the top inner wall of the hollow block (304).

4. The pneumatic channel device for transanal removal of tumor specimens after colorectal surgery according to claim 3, characterized in that: The outer surface of the main body (1) is provided with a deformation mechanism (4). The deformation mechanism (4) includes a square airbag (401) fixedly connected to one side of the two vertical plates (309). Two air injection tubes (402) are fixedly connected to the left and right sides of the square airbag (401). The two air injection tubes (402) penetrate to the outside of the vertical plate (309). The side of the air injection tube (402) away from the square airbag (401) penetrates to the top of the arc plate (308). An inner airbag (403) is fixedly connected to the end of the air injection tube (402) away from the square airbag (401).

5. The pneumatic channel device for transanal removal of tumor specimens after colorectal surgery according to claim 4, characterized in that: The outer surface of the main body (1) is provided with a connecting mechanism (5). The connecting mechanism (5) includes a connecting plate (501) fixedly connected to the right side of one of the hollow blocks (304). A limit plate (502) is fixedly connected to the outer surface of the connecting plate (501). A C-shaped block (503) is fixedly connected to the right side of the connecting plate (501).

6. The pneumatic channel device for transanal removal of tumor specimens after colorectal surgery according to claim 5, characterized in that: The C-shaped block (503) passes through the right side of the square groove and is slidably connected to the inside of the connecting plate (501). The four corners of the limiting plate (502) near the C-shaped block (503) are respectively fixedly connected to springs. The end of the spring away from the limiting plate (502) is fixedly connected to a sealing plate (504). The sealing plate (504) is slidably connected to the outer surface of the connecting plate (501) and fits against the sliding groove.

7. The pneumatic channel device for transanal removal of tumor specimens after colorectal surgery according to claim 6, characterized in that: A closing mechanism (6) is provided on the right side of the main body (1). The closing mechanism (6) includes a swing plate (601) rotatably connected inside the C-shaped block (503). A connecting ear (602) is rotatably connected to the side of the swing plate (601) away from the C-shaped block (503). An arc-shaped triangular plate (603) is fixedly connected to the top of the connecting ear (602). A slot is provided on the side of the arc-shaped triangular plate (603) near the swing plate (601). A swing block (604) is rotatably connected inside the slot. The end of the swing block (604) away from the arc-shaped triangular plate (603) is slidably connected inside the sliding groove.

8. The pneumatic channel device for transanal removal of tumor specimens after colorectal surgery according to claim 7, characterized in that: The outer surface of the support mechanism (2) is provided with an auxiliary mechanism (7). The auxiliary mechanism (7) includes a top block (703) that is slidably connected inside the slot. A lifting plate (701) is fixedly connected to the bottom of the top block (703). An arc-shaped spring plate (702) is fixedly connected to the bottom of the lifting plate (701). Springs 2 are fixedly connected to the top left and right sides of the lifting plate (701). Springs 2 are fixedly connected to the bottom of the connecting plate (501).

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