Surgical space exposure device for laparoscopic rectal cancer surgery

Abstract

The invention discloses an operation space exposing device for a laparoscopic rectal cancer operation, and belongs to the technical field of laparoscopic rectal cancer operation space exposing device.According to the operation space exposing device for the laparoscopic rectal cancer operation, two sets of side air conveying pipes capable of rotating circumferentially are symmetrically arranged on the two sides of the interior of a transverse rod; side air guiding columns are connected to the sides of the side air conveying pipes in a penetrating mode, an outer rotating ring is fixed to the outer portion of the side air guiding column on one side, an inner rotating ring is fixed to the outer portion of the side air guiding column on the other side, and air bag sets used for exposing the front-back gap of the rectum are installed on the outer rotating ring and the inner rotating ring correspondingly; the air bag group is provided with a shifting mechanism for adjusting the size of the front-back gap of the exposed rectum; the fluctuation air bag can limit dissociation of the small intestine, help to expose the root of the submesenteric artery, balance the front-back gap of the rectum through the air bag group, help to expose the operation space, and improve the flexibility of the operation.

Description

Technical Field

[0001] The invention relates to the technical field of laparoscopic rectal cancer surgery space exposure devices, in particular to a surgical space exposure device for laparoscopic rectal cancer surgery. Background Art

[0002] Laparoscopic rectal cancer surgery is a safe and effective minimally invasive surgical method, suitable for patients with early and some mid- and low-position rectal cancer. The surgery has the characteristics of less trauma, quick recovery, and fewer complications, but it requires doctors to have a high level of technical skills and rich experience. The use of a surgical space exposer during the operation allows the pelvic area that was originally difficult to reach to be clearly exposed, thereby improving the safety and accuracy of the surgery.

[0003] For example, the patent with publication number CN113456129A discloses a laparoscopic pelvic space exposure device for rectal cancer, which includes a main ventilation rod, a spreader plate, an air bag sheet, an air bag hole, an air suction hole, an inflation tube, a main rod, an exhaust valve, an exhaust hole, an inflation ball, an inflation valve, and a smoke exhaust port. When performing a laparoscopic radical resection of rectal cancer, the support device can conveniently and safely support the narrow space around the rectal pelvic cavity, better expose the surgical area, and facilitate the operator to perform the separation operation of the surrounding tissues of the rectal cancer. At the same time, the air suction hole at the head end of the exposure device can quickly absorb the smoke and gas generated by the ultrasonic knife and the electric knife in the narrow space, so that the surgical area is clear and the safety of the surgical area is ensured. After clinical use, this surgical instrument is easy, fast, and flexible to use and operate, effectively saving surgical time and improving surgical safety.

[0004] Another example is the patent with publication number CN116831657A which discloses a surgical space exposure device for laparoscopic rectal cancer surgery. The inflatable balloon is operated to drive the first piston to inflate and expand the cylindrical balloon, and the elastic structure is driven to drive the two-way tooth plate to mesh with the hinge structure, so that the hinge structure props up the cylindrical balloon, so that the four cylindrical balloons are fully expanded to form a quadrilateral structure, so that they can be enclosed at the lesion position, so that the first trachea remains enclosed at the lesion position, and at this time, the gas circulation structure can be controlled to achieve the exhaust operation through the shortest distance of the first trachea, so that the smoke can be quickly discharged. The smoke is quickly discharged and filtered and purified before circulating, so that it can prevent smoke from affecting the camera system, and maintain air circulation to avoid the reduction of air pressure in the abdominal cavity, which makes it difficult to meet the problem of abdominal space for surgery and affects the smooth progress of the operation. Secondly, exhaust can form an air wall at the lesion position to prevent small tissue from splashing out. However, some existing exposers are not convenient for opening the small intestine when in use, and the small intestine is blocked by the rectum, affecting the exposure of the root of the submembranous artery. In addition, when performing pelvic operations, the exposer is not convenient for assisting in exposing the anterior and posterior space of the rectum, and the operating space in the pelvic cavity is narrow, which is not conducive to flexible surgical operations.

[0005] In view of the above problems, it is urgently necessary to make an innovative design based on the original surgical space exposure device for laparoscopic rectal cancer surgery. Summary of the invention

[0006] The object of the present invention is to provide a surgical space exposer for laparoscopic rectal cancer surgery, so as to solve the problem mentioned in the above background technology that the existing partial exposers are not convenient for pushing aside the small intestine when in use, and the small intestine is blocked beside the rectum, which affects the exposure of the root of the submembranous artery. In addition, when performing operations in the pelvic cavity, the exposer is not convenient for assisting in exposing the anterior and posterior space of the rectum, and the operating space in the pelvic cavity is narrow, which is not conducive to flexible surgical operations.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a surgical space exposure device for laparoscopic rectal cancer surgery, comprising a cross bar, a first air inlet channel is fixedly connected to the cross bar near the handle end, an intermediate air supply pipe is rotatably connected to the first air inlet channel, and the intermediate air supply pipe is arranged in the middle position of the cross bar, a swivel is fixedly installed on the outside of the intermediate air supply pipe, and an intermediate air guide column is connected to the lower end surface of the intermediate air supply pipe, and a wave air bag for blocking the small intestine to help expose the root of the inferior mesenteric artery is connected to the lower part of the intermediate air guide column; two groups of circumferentially rotatable side air supply pipes are symmetrically arranged on both sides of the interior of the cross bar, and the side air guide columns are connected to the sides of the side air supply pipes, an outer rotating circle is fixed to the outside of the side air guide column on one side, and an inner rotating circle is fixed to the outside of the side air guide column on the other side, and an air bag group for exposing the anterior and posterior gap of the rectum is installed on the outer rotating circle and the inner rotating circle; the air bag group is provided with a toggle mechanism for adjusting the size of the anterior and posterior gap of the rectum.

[0008] Preferably, a bottom slide groove is provided at the bottom of the cross bar, and the middle air guide column is slidably connected in the bottom slide groove; side slide grooves are symmetrically provided on both sides of the cross bar, and the side air guide columns are slidably connected in the side slide grooves.

[0009] Preferably, the airbag group includes an inner airbag strip fixedly connected to the outer rotating circle and the outside of the inner rotating circle and connected to the side air guide column, and an air supply ring is connected to the upper side of the inner airbag strip, and the air supply ring is connected to the outer airbag strip.

[0010] Preferably, the wave mechanism includes a fixing seat fixed on the inner airbag strip, and a steering plate is rotatably mounted on the fixing seat, one end of the steering plate is fixedly connected to the outer side surface of the outer airbag strip; a driven lifting frame is slidably connected through the air delivery ring, the bottom of the driven lifting frame is fixedly connected to a fixed upper convex rod, a lower convex rod is fixedly connected to the steering plate, and a push rod is connected between the upper convex rod and the lower convex rod.

[0011] Preferably, the push rod is obliquely arranged between the upper convex rod and the lower convex rod, one end of the push rod is rotatably connected to the upper convex rod, and the other end of the push rod is rotatably connected to the lower convex rod.

[0012] Preferably, an active lifting frame is slidably connected through the side air delivery pipe. A round rod is fixedly connected to the active lifting frame. A bent plate is rotatably installed outside the side air delivery pipe, and a positioning groove is formed in the bent plate. The bent plate is slidably sleeved outside the round rod through the positioning groove. The active lifting frame is fixedly connected to the driven lifting frame.

[0013] Preferably, a first driving mechanism for driving the middle air guiding column to rotate is arranged in the cross bar. A second driving mechanism for driving the two side air guiding columns to rotate in opposite directions is arranged in the cross bar.

[0014] Preferably, the first driving mechanism includes a driving bevel gear fixedly sleeved outside the middle air guiding column, and a driven bevel gear is meshed beside the driving bevel gear. The driven bevel gear is rotatably installed inside the cross bar.

[0015] Preferably, the second driving mechanism includes a second air inlet passage fixedly installed on the cross bar. Both sides of the second air inlet passage are through and rotatably connected with a steering passage, and the steering passage is fixedly and through-connected with the side air delivery pipe. A power bevel gear is coaxially sleeved outside the steering passage, and a lateral bevel gear is meshed beside the power bevel gear. The lateral bevel gear is rotatably connected inside the cross bar. A driven flat gear is coaxially fixed on the lateral bevel gear, and a driving flat gear is meshed beside the driven flat gear. The driving flat gear is rotatably installed inside the cross bar. Two driving flat gears are arranged in parallel inside the cross bar, and the two driving flat gears are meshed with each other.

[0016] Preferably, a negative pressure ring is sleeved outside the cross bar, and a negative pressure passage is connected through the lower end of the negative pressure ring. A conical ring is sleeved on one side of the cross bar close to the fluctuation air bag. A plurality of negative pressure holes are equiangularly arranged on the conical ring, and the side surface of the conical ring is through-connected with the negative pressure ring through a pressure pipe.

[0017] Compared with the prior art, the beneficial effect of the present invention is that during the operation of the surgical space exposer for laparoscopic rectal cancer surgery, the fluctuation air bag and the air bag group are unfolded and supported in the patient's body to assist in exposing the surgical operation space of the patient's body.

[0018] Furthermore, a first driving mechanism is arranged in the cross bar to control the rotation of the fluctuation air bag. The running motor controls the rotation of the driving bevel gear. Under the gear meshing transmission, the middle air delivery pipe, the rotating ring and the fluctuation air bag are controlled to rotate. The rotation of the fluctuation air bag deflects and separates the small intestine to one side, avoiding the free movement of the small intestine from blocking during the operation and assisting in exposing the root of the inferior mesenteric artery.

[0019] Further, a second driving mechanism is provided in the cross bar to control the reverse rotation of the two airbag groups. Through the meshing transmission of the driving planar gear, driven planar gear, lateral bevel gear and power bevel gear, the steering channels, lateral air pipes and airbag groups on both sides in the cross bar are controlled to rotate in the reverse direction. The rotation of the airbag groups corresponds to the front and rear spaces of the rectum, assisting in exposing the space of the front and rear rectum spaces.

[0020] The airbag group is composed of an inner airbag strip, an air supply ring and an outer airbag strip. The inner airbag strip and the outer airbag strip are supported at the positions of the front and rear spaces of the rectum to help expand and expose the surgical operation space. Further, a fluctuation mechanism is provided in the cross bar. According to the size of the front and rear spaces of the rectum, the outer airbag strip is controlled to rotate outwards and expand through the fluctuation mechanism. The connection angle between the outer airbag strip and the inner strong strip becomes larger. By rotating the outer airbag strip, the space of the front and rear rectum spaces can be more clearly expanded and exposed, so as to flexibly operate medical instruments during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic three-dimensional structure diagram of the cross bar of the present invention.

[0022] Figure 2 Schematic three-dimensional structure diagram of the inner airbag strip of the present invention.

[0023] Figure 3 Schematic three-dimensional structure diagram of the outer airbag strip of the present invention.

[0024] Figure 4 Schematic three-dimensional structure diagram of the outer rotating ring of the present invention.

[0025] Figure 5 Schematic three-dimensional structure diagram of the lateral sliding groove of the present invention.

[0026] Figure 6 Schematic cross-sectional structure diagram of the lateral air pipe of the present invention.

[0027] Figure 7 Schematic three-dimensional structure diagram of the steering plate of the present invention.

[0028] Figure 8 Schematic three-dimensional structure diagram of the push rod of the present invention.

[0029] Figure 9 Schematic three-dimensional structure diagram of the bent plate of the present invention.

[0030] Figure 10 Schematic three-dimensional structure diagram of the fluctuating airbag of the present invention.

[0031] Figure 11 Schematic three-dimensional structure diagram of the negative pressure channel of the present invention.

[0032] Figure 12 Schematic three-dimensional structure diagram of the second air intake channel of the present invention.

[0033] Figure 13 This is a schematic three-dimensional structure diagram of the steering channel of the present invention.

[0034] Figure 14 This is a schematic three-dimensional structure diagram of the active planar gear of the present invention.

[0035] In the figure: 1. Cross bar; 2. First air inlet channel; 3. Intermediate air pipe; 4. Rotating ring; 5. Intermediate air guiding column; 6. Fluctuating airbag; 7. Side air pipe; 8. Side air guiding column; 9. Outer rotating ring; 10. Inner rotating ring; 11. Airbag group; 111. Inner airbag strip; 112. Air supply ring; 113. Outer airbag strip; 12. Bottom sliding groove; 13. Lateral sliding groove; 14. Fixed seat; 15. Steering plate; 16. Driven lifting frame; 17. Upper convex rod; 18. Lower convex rod; 19. Push rod; 20. Active lifting frame; 21. Round rod; 22. Bent plate; 23. Positioning groove; 24. Active bevel gear; 25. Driven bevel gear; 26. Second air inlet channel; 27. Steering channel; 28. Power bevel gear; 29. Lateral bevel gear; 30. Driven planar gear; 31. Active planar gear; 32. Negative pressure channel; 33. Negative pressure ring; 34. Conical ring; 35. Negative pressure hole; 36. Pressure pipe. Detailed implementation manners

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0037] Embodiment 1: Please refer to Figures 1-14 , the present invention provides the following technical solutions: A surgical space exposer for laparoscopic rectal cancer surgery, including a cross bar 1, a first air inlet channel 2 is fixedly connected to the cross bar 1 near the handle end, an intermediate air pipe 3 is rotatably connected through the first air inlet channel 2, and the intermediate air pipe 3 is arranged at the middle position of the cross bar 1. A rotating ring 4 is fixedly installed outside the intermediate air pipe 3, and an intermediate air guiding column 5 is connected through the lower end surface of the intermediate air pipe 3. A fluctuating airbag 6 for blocking the small intestine to help expose the root of the inferior mesenteric artery is connected through the lower part of the intermediate air guiding column 5; Two groups of circumferentially rotatable side air pipes 7 are symmetrically arranged on both sides inside the cross bar 1, and side air guiding columns 8 are connected through the sides of the side air pipes 7. An outer rotating ring 9 is fixed outside the side air guiding column 8 on one side, and an inner rotating ring 10 is fixed outside the side air guiding column 8 on the other side. An airbag group 11 for exposing the anterior and posterior rectal spaces is installed on both the outer rotating ring 9 and the inner rotating ring 10.

[0038] A bottom chute 12 is provided at the bottom of the cross bar 1, and the middle air guide column 5 is snap-fitted and slidably connected in the bottom chute 12; lateral chutes 13 are symmetrically provided on both sides of the cross bar 1, and the side air guide columns 8 are snap-fitted and slidably connected in the lateral chutes 13.

[0039] The airbag group 11 includes inner airbag strips 111 fixedly connected to the outside of the outer rotating ring 9 and the inner rotating ring 10 and through-connected to the side air guide columns 8, and an air supply ring 112 is through-connected at the upper position on the side of the inner airbag strips 111, and an outer airbag strip 113 is through-connected to the air supply ring 112.

[0040] A first driving mechanism for driving the middle air guide column 5 to rotate is provided in the cross bar 1; a second driving mechanism for driving the two side air guide columns 8 to rotate in the opposite direction is provided in the cross bar 1.

[0041] The first driving mechanism includes a driving bevel gear 24 fixedly sleeved outside the middle air guide column 5, and a driven bevel gear 25 is meshed and connected beside the driving bevel gear 24, and the driven bevel gear 25 is rotatably installed inside the cross bar 1.

[0042] The second driving mechanism includes a second air inlet passage 26 fixedly installed on the cross bar 1, both sides of the second air inlet passage 26 are through-connected and rotatably connected with a steering passage 27, and the steering passage 27 is fixedly through-connected with the side air pipe 7; a power bevel gear 28 is coaxially sleeved outside the steering passage 27, a lateral bevel gear 29 is meshed and connected beside the power bevel gear 28, the lateral bevel gear 29 is rotatably connected inside the cross bar 1, a driven flat gear 30 is coaxially fixed on the lateral bevel gear 29, and a driving flat gear 31 is meshed and connected beside the driven flat gear 30, and the driving flat gear 31 is rotatably installed inside the cross bar 1; two driving flat gears 31 are arranged in parallel inside the cross bar 1, and the two driving flat gears 31 are meshed and connected with each other.

[0043] When performing laparoscopic rectal cancer surgery, the exposure device can assist in exposing the surgical space, the undulating airbag 6 and the airbag group 11 are arranged in the patient's body through the cross bar 1, the gas is controlled to enter the middle air pipe 3 through the first air inlet passage 2, the gas in the middle air pipe 3 enters the inside of the undulating airbag 6 through the middle air guide column 5, the undulating airbag 6 is inflated and unfolded, the undulating airbag 6 is correspondingly arranged on the side of the small intestine, the motor in the cross bar 1 is operated to control the driving bevel gear 24 to rotate, the driving bevel gear 24 controls the driven bevel gear 25 and the middle air pipe 3 to rotate through meshing transmission, the middle air pipe 3 drives the rotating ring 4 to rotate synchronously, the middle air guide column 5 on the rotating ring 4 is snap-fitted in the bottom chute 12 and rotates correspondingly, the middle air guide column 5 drives the undulating airbag 6 below to rotate synchronously, and the rotating undulating airbag 6 pushes to limit the position of the small intestine, avoiding the small intestine from being free and blocking the surgical area during the operation, and assisting in exposing the root of the inferior mesenteric artery.

[0044] The gas is controlled to enter the steering channel 27 through the second air inlet channel 26, and the gas in the steering channel 27 enters the airbag group 11 through the side air delivery pipe 7 and the side air guide column 8. The airbag group 11 is inflated and deployed, and the motor in the running crossbar 1 controls the driving plane gear 31 to rotate, and the driving plane gear 31 drives the driven plane gear 30 to rotate through meshing transmission, and the driven plane gear 30 drives the lateral bevel gear 29 to rotate synchronously, and the lateral bevel gear 29 controls the power bevel gear 28 to rotate accordingly through meshing transmission, and the power bevel gear 28 drives the steering channel 27 to rotate accordingly, and the steering channel 27 controls the side air pipe 7 to rotate in a circle in the cross bar 1 accordingly, and under the gear meshing transmission, the two side air pipes 7 in the cross bar 1 rotate in the opposite direction, and the side air pipes 7 control the side air guide columns 8 to slide in the lateral slide grooves 13 accordingly, driving the airbag groups 11 on both sides of the cross bar 1 to rotate in the opposite direction, and adjusting the distance between the two airbag groups 11 according to the position of the anterior-posterior gap distribution of the rectum, so that the airbag group 11 is supported at the anterior-posterior gap of the rectum to expose the surgical operation space.

[0045] Embodiment 2: Based on Embodiment 1, a toggle mechanism is further disclosed, and its specific structure is as follows: a toggle mechanism for adjusting the size of the front and rear gap of the exposed rectum is provided on the airbag group 11; the fluctuation mechanism includes a fixing seat 14 fixed on the inner airbag strip 111, and a steering plate 15 is rotatably mounted on the fixing seat 14, and one end of the steering plate 15 is fixedly connected to the outer side surface of the outer airbag strip 113; a driven lifting frame 16 is slidably connected through the air delivery ring 112, and the bottom of the driven lifting frame 16 is fixedly connected to a fixed upper protruding rod 17, a lower protruding rod 18 is fixedly connected to the steering plate 15, and a push rod 19 is connected between the upper protruding rod 17 and the lower protruding rod 18.

[0046] The push rod 19 is obliquely disposed between the upper protruding rod 17 and the lower protruding rod 18 , one end of the push rod 19 is rotatably connected to the upper protruding rod 17 , and the other end of the push rod 19 is rotatably connected to the lower protruding rod 18 .

[0047] An active lifting frame 20 is slidably connected through the side air supply pipe 7, a round rod 21 is fixedly connected to the active lifting frame 20, a bent plate 22 is rotatably installed on the outside of the side air supply pipe 7, and a positioning groove 23 is opened on the bent plate 22; the bent plate 22 is slidably sleeved on the outside of the round rod 21 through the positioning groove 23; the active lifting frame 20 is fixedly connected to the driven lifting frame 16.

[0048] A negative pressure ring 33 is sleeved on the outside of the cross bar 1, and the lower end of the negative pressure ring 33 is connected to a negative pressure channel 32; a conical ring 34 is sleeved on the outside of the cross bar 1 near the wave airbag 6, and a plurality of negative pressure holes 35 are opened at equal angles on the conical ring 34, and the side of the conical ring 34 is connected to the negative pressure ring 33 through a pressure pipe 36.

[0049] According to the size of the anterior and posterior rectal spaces, the motor is operated to control the rotation of the bending plate 22. The bending plate 22 is sleeved outside the round rod 21 through the positioning groove 23 and rotates, driving the round rod 21 and the active lifting frame 20 to move up and down. When the active lifting frame 20 drives the driven lifting frame 16 to move up and down synchronously and the driven lifting frame 16 moves longitudinally through the air delivery ring 112, both ends of the push rod 19 connected between the upper convex rod 17 and the lower convex rod 18 rotate correspondingly. The rotating push rod 19 pushes the lower convex rod 18 and the steering plate 15 to rotate correspondingly. The steering plate 15 pushes the outer airbag strip 113 to bend outward downward, expanding the angle between the outer airbag strip 113 and the inner airbag strip 111, so as to support and expose the anterior and posterior rectal spaces and assist in the flexible operation of the surgery.

[0050] During the operation, the ultrasonic scalpel and the electric scalpel will generate some smoke during use. The negative pressure channel 32 is connected to the negative pressure controller, and the gas is sucked through the negative pressure channel 32. The pressure of the negative pressure channel 32 is transmitted to the conical ring 34 through the negative pressure ring 33 and the pressure pipe 36. The conical ring 34 sucks the smoke during the operation through the negative pressure holes 35 on the outside, thereby reducing the visual interference of the smoke on the operation and assisting in the smooth progress of the operation.

[0051] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0052] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A surgical space exposure device for laparoscopic rectal cancer surgery, comprising a crossbar (1), characterized in that: The cross bar (1) is fixedly connected to a first air inlet passage (2) near the handle end, the first air inlet passage (2) is rotatably connected to an intermediate air delivery pipe (3), and the intermediate air delivery pipe (3) is arranged in the middle of the cross bar (1), a swivel (4) is fixedly mounted on the outside of the intermediate air delivery pipe (3), and an intermediate air guide column (5) is connected to the lower end surface of the intermediate air delivery pipe (3), and a wave air bag (6) for blocking the small intestine and helping to expose the root of the inferior mesenteric artery is connected to the lower side of the intermediate air guide column (5); Two groups of circularly rotatable side air delivery tubes (7) are symmetrically arranged on both sides of the crossbar (1), and the sides of the side air delivery tubes (7) are connected to side air guide columns (8). An outer rotating circle (9) is fixed to the outside of the side air guide column (8) on one side, and an inner rotating circle (10) is fixed to the outside of the side air guide column (8) on the other side. Both the outer rotating circle (9) and the inner rotating circle (10) are equipped with air bag groups (11) for exposing the anterior and posterior space of the rectum. The airbag group (11) is provided with a toggle mechanism for adjusting the size of the front and rear gap of the exposed rectum.

2. The surgical space exposure device for laparoscopic rectal cancer surgery according to claim 1, characterized in that: A bottom slide groove (12) is provided at the bottom of the cross bar (1), and the middle air guide column (5) is snap-fitted and slidably connected in the bottom slide groove (12); Side sliding grooves (13) are symmetrically provided on both sides of the crossbar (1), and the side air guide columns (8) are snap-fitted and slidably connected in the side sliding grooves (13).

3. The surgical space exposure device for laparoscopic rectal cancer surgery according to claim 1, characterized in that: The airbag assembly (11) comprises an inner airbag strip (111) fixedly connected to the outer side of the outer rotating circle (9) and the inner rotating circle (10) and connected to the side air guide column (8), and an air delivery ring (112) is connected to the upper side of the inner airbag strip (111), and an outer airbag strip (113) is connected to the air delivery ring (112).

4. The surgical space exposure device for laparoscopic rectal cancer surgery according to claim 3, characterized in that: The wave mechanism comprises a fixing seat (14) fixed on the inner airbag strip (111), and a steering plate (15) is rotatably mounted on the fixing seat (14), and one end of the steering plate (15) is fixedly connected to the outer side surface of the outer airbag strip (113); A driven lifting frame (16) is slidably connected through the gas delivery ring (112), the bottom of the driven lifting frame (16) is fixedly connected to a fixed upper protruding rod (17), a lower protruding rod (18) is fixedly connected to the steering plate (15), and a push rod (19) is connected between the upper protruding rod (17) and the lower protruding rod (18).

5. The surgical space exposure device for laparoscopic rectal cancer surgery according to claim 4, characterized in that: The push rod (19) is obliquely arranged between the upper convex rod (17) and the lower convex rod (18); one end of the push rod (19) is rotatably connected to the upper convex rod (17), and the other end of the push rod (19) is rotatably connected to the lower convex rod (18).

6. The surgical space exposure device for laparoscopic rectal cancer surgery according to claim 5, characterized in that: An active lifting frame (20) is slidably connected through the side gas delivery pipe (7), a round rod (21) is fixedly connected to the active lifting frame (20), a bent plate (22) is rotatably mounted on the outside of the side gas delivery pipe (7), and a positioning groove (23) is provided on the bent plate (22); The bent plate (22) is slidably mounted on the outside of the round rod (21) via a positioning groove (23); The active lifting frame (20) is fixedly connected to the driven lifting frame (16).

7. The surgical space exposure device for laparoscopic rectal cancer surgery according to claim 1, characterized in that: The crossbar (1) is provided with a first driving mechanism for driving the intermediate air guide column (5) to rotate; The crossbar (1) is provided with a second driving mechanism for driving the two side air guide columns (8) to rotate in opposite directions.

8. The surgical space exposure device for laparoscopic rectal cancer surgery according to claim 7, characterized in that: The first driving mechanism comprises a driving bevel gear (24) fixedly sleeved on the outside of the intermediate air guide column (5), and a driven bevel gear (25) is meshingly connected to the driving bevel gear (24), and the driven bevel gear (25) is rotatably mounted inside the crossbar (1).

9. The surgical space exposure device for laparoscopic rectal cancer surgery according to claim 7, characterized in that: The second driving mechanism comprises a second air intake channel (26) fixedly mounted on the crossbar (1), the second air intake channel (26) having two sides that are connected to and rotatably connected to a steering channel (27), and the steering channel (27) is fixedly connected to the side air delivery pipe (7); The steering channel (27) is coaxially sleeved with a power bevel gear (28) outside, the power bevel gear (28) is meshedly connected to a lateral bevel gear (29), the lateral bevel gear (29) is rotatably connected to the inside of the crossbar (1), a driven plane gear (30) is coaxially fixed to the lateral bevel gear (29), the driven plane gear (30) is meshedly connected to a driving plane gear (31), the driving plane gear (31) is rotatably mounted inside the crossbar (1); Two driving plane gears (31) are arranged in parallel inside the crossbar (1), and the two driving plane gears (31) are meshingly connected.

10. The surgical space exposure device for laparoscopic rectal cancer surgery according to claim 1, characterized in that: The cross bar (1) is sleeved with a negative pressure ring (33) on the outside, and the lower end of the negative pressure ring (33) is connected to a negative pressure channel (32); A conical ring (34) is sleeved on one side of the outer portion of the crossbar (1) close to the wave airbag (6), a plurality of negative pressure holes (35) are provided at equal angles on the conical ring (34), and a side surface of the conical ring (34) is connected to the negative pressure ring (33) via a pressure pipe (36).

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