Support for lithotomy position operation in anorectal surgery

Abstract

The invention relates to the technical field of medical instruments, and provides an anorectal surgery lithotomy position operation support which comprises a moving frame, a height adjusting mechanism is installed on the upper surface of the moving frame, a swing adjusting mechanism is installed at one end of the height adjusting mechanism, and an angle adjusting mechanism is installed on the outer wall of the swing adjusting mechanism. And a position adjusting mechanism is mounted at one end of the angle adjusting mechanism. A first connecting block drives a fixing rod and a second supporting frame to enable a second connecting block to move, limiting is relieved through sliding of a first clamping block in a third connecting rod, the third connecting rod rotates to drive a second connecting rod to move, and then a second electric push rod drives a third rotating block and the third connecting block to move. And then a first electric push rod pushes a first connecting rod to drive a first sliding rod to push a third connecting rod to move, so that the effect that the position of a supporting pad is adjusted to facilitate operation is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, in particular to a stent for lithotomy position surgery in anorectal surgery. Background Art

[0002] Anorectal surgery is usually used to treat rectal and anal diseases, including hemorrhoidectomy, anal fistula repair, rectal cancer surgery, etc. These surgeries usually require patients to adopt the lithotomy position, that is, the patient lies on his back with his legs raised and spread apart so that the surgeon can obtain a good surgical field of view and operating space. The lithotomy position is an important way to fix the body position, but traditional stent devices have many technical defects and deficiencies in practical applications, and it is difficult to meet the complex needs of modern surgical operations.

[0003] Different patients have different body shapes, leg lengths, surgical sites and angle requirements, and traditional stents can only provide basic height adjustment, lacking the ability to adjust the support angle, swing range and position in multiple dimensions. The inability to flexibly adjust the structure and support position of the stent can easily lead to improper patient position fixation, increasing the difficulty of surgery.

[0004] The lithotomy position requires the patient's legs to be suspended for a long time. Traditional stents are mostly made of hard materials, and the support pads are simple in design, lacking softness and good cushioning performance. Long-term surgery may cause leg pain, pressure sores, and even blood circulation disorders in patients, increasing the risk of postoperative recovery.

[0005] Various medical tools, instruments and auxiliary equipment need to be placed during surgery, but existing brackets usually cannot provide special tool storage and fixation functions, which makes it inconvenient to access surgical tools and increases the operating burden of the operating room. Summary of the invention

[0006] In view of the deficiencies in the prior art, the present invention provides a stent for lithotomy position surgery in anorectal surgery, which solves the deficiencies of the surgical stent in terms of stability, adjustment flexibility, patient comfort and ease of operation.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: a stent for lithotomy surgery in anorectal surgery, comprising a mobile frame, a height adjustment mechanism is installed on the upper surface of the mobile frame, a swing adjustment mechanism is installed at one end of the height adjustment mechanism, an angle adjustment mechanism is installed on the outer wall of the swing adjustment mechanism, and a position adjustment mechanism is installed at one end of the angle adjustment mechanism;

[0008] The position adjustment mechanism includes a second connecting rod, an outer wall of the second connecting rod is fixedly connected to a limiting block, an outer wall of the limiting block is slidably connected to a second connecting block, an inner part of the second connecting block is slidably connected to an outer wall of the second connecting rod, an inner part of the second connecting rod is threadedly connected to a threaded rod, one end of the threaded rod is fixedly connected to a first rotating block, an outer wall of the first rotating block is rotatably connected to the first connecting block, one end of the first connecting block is rotatably connected to a rotating handle, and one side of an outer wall of the rotating handle is fixedly connected to one end of the first rotating block.

[0009] Preferably, the outer walls of the second connecting block and the first connecting block are both fixedly connected with a fixing rod, one end of the fixing rod is fixedly connected with a second supporting frame, and the outer wall of the second supporting frame is fixedly connected with a supporting pad.

[0010] Preferably, the height adjustment mechanism includes a fixed plate, the lower surface of the fixed plate is fixedly connected to the upper surface of the movable frame, the interior of the fixed plate is fixedly connected with a first electric push rod, the output end of the first electric push rod is fixedly connected with a first connecting rod, the outer wall of the first connecting rod is slidably connected to the interior of the fixed plate, the upper surface of the first connecting rod is fixedly connected with a first sliding rod, and the outer wall of the first sliding rod is slidably connected to the interior of the fixed plate.

[0011] Preferably, the swing adjustment mechanism includes a second locking block, the outer wall of the second locking block is fixedly connected to the third connecting rod, the interior of the third connecting rod is slidably connected to the second sliding rod, one end of the second sliding rod is fixedly connected to the connecting handle, the other end of the second sliding rod is fixedly connected to the first locking block, the outer wall of the first locking block is slidably connected to the outer wall of the second locking block, and the outer wall of the first locking block is slidably connected to the interior of the third connecting rod.

[0012] Preferably, the outer wall of the second sliding rod is fixedly connected to the first limiting rod, the outer wall of the first limiting rod is slidably connected to the inside of the third connecting rod, the upper surface of the second locking block is fixedly connected to the first spring, and one end of the first spring is fixedly connected to the inner wall of the third connecting rod.

[0013] Preferably, the outer wall of the third connecting rod is rotatably connected to a fourth rotating block, and the outer wall of the fourth rotating block is fixedly connected to the outer wall of the second connecting rod.

[0014] Preferably, the angle adjustment mechanism includes a second rotating block, the upper surface of the second rotating block is fixedly connected to the lower surface of the third connecting rod, the interior of the second rotating block is rotatably connected to the outer wall of the first sliding rod, the outer wall of the second rotating block is fixedly connected to the first connecting frame, the outer wall of the first connecting frame is rotatably connected to the second electric push rod, the output end of the second electric push rod is fixedly connected to the third rotating block, the outer wall of the third rotating block is rotatably connected to the third connecting block, and the upper surface of the third connecting block is fixedly connected to the outer wall of the second connecting rod.

[0015] Preferably, the upper surface of the movable frame is fixedly connected with a slide rail, the outer wall of the slide rail is slidably connected with a first sliding block, the upper surface of the first sliding block is fixedly connected with a telescopic rod, and the top end of the telescopic rod is rotatably connected with a fourth connecting block.

[0016] Preferably, the outer wall of the fourth connecting block is rotatably connected to the second connecting frame, the upper surface of the second connecting frame is fixedly connected to the first supporting frame, a limiting plate is provided inside the first supporting frame, the inner wall of the second connecting frame is fixedly connected to the fixed block, the outer wall of the fixed block is fixedly connected to the second limiting rod, the outer wall of the second limiting rod is slidably connected to the sliding frame, the outer wall of the sliding frame is fixedly connected to a tension spring, one end of the tension spring is fixedly connected to the outer wall of the fixed block, the outer wall of the sliding frame is slidably connected to the inside of the first limiting groove, and the upper surface of the first limiting groove is fixedly connected to the limiting plate.

[0017] Preferably, a second limiting groove is provided inside the second connecting frame, the fourth connecting block is slidably connected to a limiting pin inside, the upper surface of the limiting pin is fixedly connected to a second sliding block, one end of the limiting pin is fixedly connected to a second spring, and one end of the second spring is fixedly connected to the inner wall of the fourth connecting block.

[0018] The present invention provides a stent for lithotomy surgery in anorectal surgery, which has the following beneficial effects:

[0019] 1. The present invention drives the fixing rod and the second supporting frame through the first connecting block to move the second connecting block, and releases the limit by sliding the first locking block in the third connecting rod, and then drives the second connecting rod to move by rotating the third connecting rod, and then drives the third rotating block and the third connecting block to move by the second electric push rod, so as to adjust the angle of the second connecting rod, and then drives the first connecting rod to drive the first sliding rod to push the third connecting rod to move by the first electric push rod, so as to achieve the effect of adjusting the position of the support pad to facilitate surgery.

[0020] 2. The present invention pulls the second connecting frame to rotate on the fourth connecting block, so that the second spring pushes the limit pin to be inserted into the second limit groove, thereby fixing the second connecting frame, and then drives the sliding frame to drive the limit plate to slide on the first support frame through the tension spring, thereby fixing the tray placed on the first support frame, and then adjusting the height of the fourth connecting block through the telescopic rod, and then driving the first sliding block to slide on the slide rail by pushing the telescopic rod, and the effect of convenient placement of surgical tools is achieved by adjusting the position of the second connecting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A perspective view of the present invention;

[0022] Figure 2 is a schematic diagram of a support pad of the present invention;

[0023] Figure 3 It is a schematic diagram of a fixing rod of the present invention;

[0024] Figure 4 It is a cross-sectional view of the limit block of the present invention;

[0025] Figure 5 is a cross-sectional view of a fixing plate of the present invention;

[0026] Figure 6 is a cross-sectional view of a third connecting rod of the present invention;

[0027] Figure 7 is a schematic diagram of a fourth connection block of the present invention;

[0028] Figure 8 is a cross-sectional view of a second connecting frame of the present invention;

[0029] Fig. 9 It is a cross-sectional view of the fourth connecting block of the present invention.

[0030] Among them, 1. mobile frame; 2. first support frame; 3. height adjustment mechanism; 301. fixed plate; 302. first electric push rod; 303. first connecting rod; 304. first sliding rod; 4. position adjustment mechanism; 401. second connecting rod; 402. first connecting block; 403. rotating handle; 404. second connecting block; 405. threaded rod; 406. limit block; 407. first rotating block; 5. telescopic rod; 6. swing adjustment mechanism; 601. third connecting rod; 602. second sliding rod; 603. connecting handle; 604. first limit rod; 605. first spring; 606. first engaging block; 607, second engaging block; 7, angle adjustment mechanism; 701, second rotating block; 702, first connecting frame; 703, third rotating block; 704, second electric push rod; 705, third connecting block; 8, second supporting frame; 9, fixed rod; 10, supporting pad; 11, fourth rotating block; 12, slide rail; 13, first sliding block; 14, fourth connecting block; 15, first limiting groove; 16, limiting plate; 17, second connecting frame; 18, second limiting groove; 19, sliding frame; 20, tension spring; 21, second limiting rod; 22, fixed block; 23, limiting pin; 24, second spring; 25, second sliding block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example:

[0033] Please see attached Figure 1 -Attached Fig. 9 The embodiment of the present invention provides a support for lithotomy surgery in anorectal surgery, comprising a movable frame 1, the upper surface of which is provided with a height adjustment mechanism 3; the height adjustment mechanism 3 comprises a fixed plate 301, the lower surface of the fixed plate 301 is fixedly connected to the upper surface of the movable frame 1, the interior of the fixed plate 301 is fixedly connected with a first electric push rod 302, the output end of the first electric push rod 302 is fixedly connected with a first connecting rod 303, the outer wall of the first connecting rod 303 is slidably connected to the interior of the fixed plate 301, the upper surface of the first connecting rod 303 is fixedly connected with a first sliding rod 304, the outer wall of the first sliding rod 304 is slidably connected to the interior of the fixed plate 301;

[0034] Specifically, the output end of the first electric push rod 302 drives the first connecting rod 303 to slide inside the fixed plate 301, and the movement of the first connecting rod 303 drives the first sliding rod 304 to slide inside the fixed plate 301 to move, and the height adjustment effect is achieved by the movement of the first sliding rod 304;

[0035] A swing adjustment mechanism 6 is installed at one end of the height adjustment mechanism 3; the swing adjustment mechanism 6 includes a second locking block 607, the outer wall of the second locking block 607 is fixedly connected to the third connecting rod 601, the interior of the third connecting rod 601 is slidably connected to the second sliding rod 602, one end of the second sliding rod 602 is fixedly connected to the connecting handle 603, the other end of the second sliding rod 602 is fixedly connected to the first locking block 606, the outer wall of the first locking block 606 is slidably connected to the outer wall of the second locking block 607, and the outer wall of the first locking block 606 is slidably connected to the interior of the third connecting rod 601; the outer wall of the second sliding rod 602 is fixedly connected to the first limiting rod 604, the outer wall of the first limiting rod 604 is slidably connected to the interior of the third connecting rod 601, the upper surface of the second locking block 607 is fixedly connected to the first spring 605, and one end of the first spring 605 is fixedly connected to the inner wall of the third connecting rod 601;

[0036] Specifically, the second sliding rod 602 is driven by pulling the connecting handle 603, so that the first limiting rod 604 slides inside the third connecting rod 601, so that the first engaging block 606 is driven to move by the second sliding rod 602, so that the first engaging block 606 squeezes the first spring 605, so that the third connecting rod 601 is rotated and rotates on the second engaging block 607, so as to achieve the effect of swing adjustment, and the first engaging block 606 is pushed to move by the first spring 605, so that the first engaging block 606 is engaged with the second engaging block 607, so as to achieve the effect of fixing the third connecting rod 601;

[0037] An angle adjustment mechanism 7 is installed on the outer wall of the swing adjustment mechanism 6; the angle adjustment mechanism 7 includes a second rotating block 701, the upper surface of the second rotating block 701 is fixedly connected to the lower surface of the third connecting rod 601, the interior of the second rotating block 701 is rotatably connected to the outer wall of the first sliding rod 304, the outer wall of the second rotating block 701 is fixedly connected to the first connecting frame 702, the outer wall of the first connecting frame 702 is rotatably connected to the second electric push rod 704, the output end of the second electric push rod 704 is fixedly connected to the third rotating block 703, the outer wall of the third rotating block 703 is rotatably connected to the third connecting block 705, and the upper surface of the third connecting block 705 is fixedly connected to the outer wall of the second connecting rod 401;

[0038] Specifically, the output end of the second electric push rod 704 drives the third rotating block 703 to move, so that the third rotating block 703 rotates on the third connecting block 705, thereby driving the third connecting block 705 to move, and at the same time, the second electric push rod 704 rotates on the first connecting frame 702, thereby achieving the effect of adjusting the angle of the position adjustment mechanism 4;

[0039] A position adjustment mechanism 4 is installed at one end of the angle adjustment mechanism 7;

[0040] The position adjustment mechanism 4 includes a second connecting rod 401, the outer wall of the second connecting rod 401 is fixedly connected to a limiting block 406, the outer wall of the limiting block 406 is slidably connected to the second connecting block 404, the interior of the second connecting block 404 is slidably connected to the outer wall of the second connecting rod 401, the interior of the second connecting rod 401 is threadedly connected to a threaded rod 405, one end of the threaded rod 405 is fixedly connected to a first rotating block 407, the outer wall of the first rotating block 407 is rotatably connected to the first connecting block 402, one end of the first connecting block 402 is rotatably connected to a rotating handle 403, and one side of the outer wall of the rotating handle 403 is fixedly connected to one end of the first rotating block 407; the outer walls of the second connecting block 404 and the first connecting block 402 are both fixedly connected to a fixing rod 9, one end of the fixing rod 9 is fixedly connected to a second supporting frame 8, and the outer wall of the second supporting frame 8 is fixedly connected to a supporting pad 10;

[0041] Specifically, by rotating the rotating handle 403, the first rotating block 407 is driven to rotate, thereby driving the threaded rod 405 to rotate inside the second connecting rod 401, thereby driving the first connecting block 402 to move, so that the fixed rod 9 drives the second support frame 8 and the support pad 10 to move, and the fixed rod 9 drives the second connecting block 404 to slide on the second connecting rod 401 and the limit block 406, thereby achieving the effect of adjusting the position of the support pad 10.

[0042] The outer wall of the third connecting rod 601 is rotatably connected to the fourth rotating block 11, and the outer wall of the fourth rotating block 11 is fixedly connected to the outer wall of the second connecting rod 401;

[0043] Specifically, the movement of the third connecting block 705 drives the second connecting rod 401 to move, so that the fourth rotating block 11 rotates on the third connecting rod 601 .

[0044] The upper surface of the mobile frame 1 is fixedly connected with a slide rail 12, and the outer wall of the slide rail 12 is slidably connected with a first sliding block 13, and the upper surface of the first sliding block 13 is fixedly connected with a telescopic rod 5, and the top of the telescopic rod 5 is rotatably connected with a fourth connecting block 14; the outer wall of the fourth connecting block 14 is rotatably connected with a second connecting frame 17, and the upper surface of the second connecting frame 17 is fixedly connected with a first supporting frame 2, and a limiting plate 16 is provided inside the first supporting frame 2, and the inner wall of the second connecting frame 17 is fixedly connected with a fixed block 22, and the outer wall of the fixed block 22 is fixedly connected with a second limiting rod 21, and the outer wall of the second limiting rod 21 is slidably connected with A sliding frame 19, the outer wall of the sliding frame 19 is fixedly connected with a tension spring 20, one end of the tension spring 20 is fixedly connected to the outer wall of the fixed block 22, the outer wall of the sliding frame 19 is slidably connected to the inside of the first limiting groove 15, and the upper surface of the first limiting groove 15 is fixedly connected to the limiting plate 16; a second limiting groove 18 is opened inside the second connecting frame 17, and a limiting pin 23 is slidably connected to the inside of the fourth connecting block 14, and the upper surface of the limiting pin 23 is fixedly connected with a second sliding block 25, one end of the limiting pin 23 is fixedly connected to a second spring 24, and one end of the second spring 24 is fixedly connected to the inner wall of the fourth connecting block 14;

[0045] Specifically, the first sliding block 13 is driven to move by pushing the telescopic rod 5, so that the first sliding block 13 moves on the slide rail 12, and then the height of the fourth connecting block 14 is adjusted by the extension and retraction of the telescopic rod 5, and then the second connecting frame 17 is rotated on the fourth connecting block 14, and then the second spring 24 is used to push the limit pin 23 to be inserted into the second limit groove 18, thereby fixing the second connecting frame 17, and then placing the tray on the first support frame 2, and then pulling the sliding frame 19 to slide on the second limit rod 21 through the tension spring 20, thereby driving the limit plate 16 to move, so that the tray is fixed by the limit plate 16, thereby achieving the effect of convenient placement of tools.

[0046] The working principle is as follows: first, the mobile frame 1 is moved to the position of the operating bed, and the first rotating block 407 is driven to rotate by rotating the rotating handle 403, so that the threaded rod 405 rotates within the limit block 406, thereby moving the first connecting block 402, thereby driving the fixed rod 9 and the second support frame 8 to move, so that the second connecting block 404 slides on the limit block 406, and then driving the support pad 10 to move, thereby adjusting the position of the support pad 10, so as to facilitate the patient to place the calf on the support pad 10, and the first connecting rod 303 is driven to slide inside the fixed plate 301 through the output end of the first electric push rod 302, thereby driving the first sliding rod 30 4 slides on the fixed plate 301, thereby pushing the third connecting rod 601 to move, so as to achieve the effect of adjusting the height, and by pulling the connecting handle 603, the second sliding rod 602 is driven to slide inside the third connecting rod 601, thereby driving the first limiting rod 604 to move, and the movement of the second sliding rod 602 drives the first engaging block 606 to push, so that the first engaging block 606 is separated from the second engaging block 607, so that the third connecting rod 601 is rotated to drive the first limiting rod 604 to rotate, so that the second sliding rod 602 drives the first engaging block 606 to rotate, and then the fourth rotating block 11 and the second connecting rod 401 are driven to move through the third connecting rod 601. The first spring 605 pushes the first engaging block 606 to engage with the second engaging block 607, thereby achieving the effect of limiting the third connecting rod 601, and then the output end of the second electric push rod 704 drives the third rotating block 703 to rotate on the third connecting block 705, and at the same time, the second electric push rod 704 rotates on the first connecting frame 702, thereby driving the second connecting rod 401 to make the fourth rotating block 11 rotate on the third connecting rod 601, thereby achieving the effect of adjusting the angle of the support pad 10, thereby achieving the effect of adjusting the position of the patient's leg to facilitate surgery, by pulling the second connecting frame 17 to rotate on the fourth connecting block 14, and then The second spring 24 pushes the limit pin 23 to slide in the fourth connecting block 14, so that the limit pin 23 is inserted into the second limit groove 18, and then the second connecting frame 17 is fixed, and the sliding frame 19 is driven to slide on the second limit rod 21 through the tension spring 20, thereby driving the limit plate 16 to slide on the first support frame 2, and then fixing the tray placed on the first support frame 2, and then adjusting the height of the fourth connecting block 14 through the telescopic rod 5, and then driving the first sliding block 13 to slide on the slide rail 12 by pushing the telescopic rod 5, thereby achieving the effect of adjusting the position of the second connecting frame 17, and thus achieving the effect of facilitating the placement of surgical tools by adjusting the position of the second connecting frame 17.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A support for lithotomy surgery in anorectal surgery, comprising a movable frame (1), characterized in that: A height adjustment mechanism (3) is installed on the upper surface of the mobile frame (1); a swing adjustment mechanism (6) is installed at one end of the height adjustment mechanism (3); an angle adjustment mechanism (7) is installed on the outer wall of the swing adjustment mechanism (6); and a position adjustment mechanism (4) is installed at one end of the angle adjustment mechanism (7); The position adjustment mechanism (4) comprises a second connecting rod (401), the outer wall of the second connecting rod (401) is fixedly connected to a limiting block (406), the outer wall of the limiting block (406) is slidably connected to a second connecting block (404), the interior of the second connecting block (404) is slidably connected to the outer wall of the second connecting rod (401), the interior of the second connecting rod (401) is threadedly connected to a threaded rod (405), one end of the threaded rod (405) is fixedly connected to a first rotating block (407), the outer wall of the first rotating block (407) is rotatably connected to the first connecting block (402), one end of the first connecting block (402) is rotatably connected to a rotating handle (403), and one side of the outer wall of the rotating handle (403) is fixedly connected to one end of the first rotating block (407).

2. The stent for lithotomy surgery in anorectal surgery according to claim 1, characterized in that: The outer walls of the second connecting block (404) and the first connecting block (402) are both fixedly connected with a fixing rod (9), one end of the fixing rod (9) is fixedly connected with a second supporting frame (8), and the outer wall of the second supporting frame (8) is fixedly connected with a supporting pad (10).

3. The stent for lithotomy surgery in anorectal surgery according to claim 1, characterized in that: The height adjustment mechanism (3) comprises a fixed plate (301), the lower surface of the fixed plate (301) is fixedly connected to the upper surface of the movable frame (1), the interior of the fixed plate (301) is fixedly connected to a first electric push rod (302), the output end of the first electric push rod (302) is fixedly connected to a first connecting rod (303), the outer wall of the first connecting rod (303) is slidably connected to the interior of the fixed plate (301), the upper surface of the first connecting rod (303) is fixedly connected to a first sliding rod (304), and the outer wall of the first sliding rod (304) is slidably connected to the interior of the fixed plate (301).

4. The stent for lithotomy position surgery in anorectal surgery according to claim 1, characterized in that: The swing adjustment mechanism (6) comprises a second locking block (607), the outer wall of the second locking block (607) is fixedly connected to the third connecting rod (601), the interior of the third connecting rod (601) is slidably connected to the second sliding rod (602), one end of the second sliding rod (602) is fixedly connected to the connecting handle (603), the other end of the second sliding rod (602) is fixedly connected to the first locking block (606), the outer wall of the first locking block (606) is slidably connected to the outer wall of the second locking block (607), and the outer wall of the first locking block (606) is slidably connected to the interior of the third connecting rod (601).

5. The stent for lithotomy surgery in anorectal surgery according to claim 4, characterized in that: The outer wall of the second sliding rod (602) is fixedly connected to the first limiting rod (604), and the outer wall of the first limiting rod (604) is slidably connected to the inside of the third connecting rod (601). The upper surface of the second locking block (607) is fixedly connected to the first spring (605), and one end of the first spring (605) is fixedly connected to the inner wall of the third connecting rod (601).

6. The stent for lithotomy surgery in anorectal surgery according to claim 4, characterized in that: The outer wall of the third connecting rod (601) is rotatably connected to a fourth rotating block (11), and the outer wall of the fourth rotating block (11) is fixedly connected to the outer wall of the second connecting rod (401).

7. The stent for lithotomy surgery in anorectal surgery according to claim 1, characterized in that: The angle adjustment mechanism (7) comprises a second rotating block (701), the upper surface of the second rotating block (701) is fixedly connected to the lower surface of the third connecting rod (601), the interior of the second rotating block (701) is rotatably connected to the outer wall of the first sliding rod (304), the outer wall of the second rotating block (701) is fixedly connected to the first connecting frame (702), the outer wall of the first connecting frame (702) is rotatably connected to the second electric push rod (704), the output end of the second electric push rod (704) is fixedly connected to the third rotating block (703), the outer wall of the third rotating block (703) is rotatably connected to the third connecting block (705), and the upper surface of the third connecting block (705) is fixedly connected to the outer wall of the second connecting rod (401).

8. The stent for lithotomy surgery in anorectal surgery according to claim 1, characterized in that: The upper surface of the mobile frame (1) is fixedly connected to a slide rail (12), the outer wall of the slide rail (12) is slidably connected to a first sliding block (13), the upper surface of the first sliding block (13) is fixedly connected to a telescopic rod (5), and the top end of the telescopic rod (5) is rotatably connected to a fourth connecting block (14).

9. The stent for lithotomy surgery in anorectal surgery according to claim 8, characterized in that: The outer wall of the fourth connecting block (14) is rotatably connected to the second connecting frame (17), the upper surface of the second connecting frame (17) is fixedly connected to the first supporting frame (2), a limiting plate (16) is provided inside the first supporting frame (2), the inner wall of the second connecting frame (17) is fixedly connected to the fixing block (22), the outer wall of the fixing block (22) is fixedly connected to the second limiting rod (21), the outer wall of the second limiting rod (21) is slidably connected to the sliding frame (19), the outer wall of the sliding frame (19) is fixedly connected to the tension spring (20), one end of the tension spring (20) is fixedly connected to the outer wall of the fixing block (22), the outer wall of the sliding frame (19) is slidably connected to the inside of the first limiting groove (15), and the upper surface of the first limiting groove (15) is fixedly connected to the limiting plate (16).

10. The stent for lithotomy surgery in anorectal surgery according to claim 9, characterized in that: A second limiting groove (18) is provided inside the second connecting frame (17); a limiting pin (23) is slidably connected inside the fourth connecting block (14); a second sliding block (25) is fixedly connected to the upper surface of the limiting pin (23); one end of the limiting pin (23) is fixedly connected to a second spring (24); and one end of the second spring (24) is fixedly connected to the inner wall of the fourth connecting block (14).

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