Gastrointestinal surgery anal dilatation equipment convenient to disassemble and clean

Abstract

The invention relates to the technical field of medical instruments, and discloses gastrointestinal surgery anus dilatation equipment convenient to disassemble and clean, a first anus dilatation sheet and a second anus dilatation sheet are arranged above a base, a window is formed in the surface of the first anus dilatation sheet, and sliding seat bodies are symmetrically and slidably connected to the inner wall of the base; the sliding seat body comprises a first sliding seat and a second sliding seat, a threaded telescopic rod is fixedly connected to the center of the outer wall of the sliding seat body, a tooth groove is formed in the lower surface of the rotating ring, the tooth end of the tooth ring is connected with the tooth groove in a meshed mode, and a fixing assembly is arranged in the base. The fixing assembly is used for fixing the first anal dilatation sheet and the second anal dilatation sheet. The first anal dilatation sheet and the second anal dilatation sheet are combined and inserted into the anus, damage to the anus is reduced while the first anal dilatation sheet and the second anal dilatation sheet conveniently enter the anus, the first anal dilatation sheet and the second anal dilatation sheet can gradually slide and expand by rotating the rotating ring, and therefore the anal sphincter of a patient gradually adapts to the expanded amplitude.

Description

Technical Field

[0001] The invention relates to the technical field of medical instruments, and in particular to a gastrointestinal surgery anal dilation device which is easy to disassemble and clean. Background Art

[0002] When doing anorectal surgery for examination, diagnosis or surgical treatment, the anus needs to be stretched open first, and then other surgical instruments for examination or treatment are inserted. The commonly used surgical instrument for stretching the anus is an anal dilator, which includes a cylindrical body and a wide force-applying edge at the tail of the body. The rigid cylindrical body can stretch the anus, and the hollow part inside the cylinder constitutes a channel for other surgical instruments to enter the patient's body. Then the anal dilator is slowly expanded as a whole to stretch the anal sphincter.

[0003] During gastrointestinal surgery, the lesion will be placed at the window opened by the anal dilator, and medical instruments will be used to treat the lesion. When the lesion is at the bottom, in order to accommodate the instrument, a larger expansion should be required in the up and down directions, and the expansion required in the left and right directions is relatively small. Therefore, the more fitting expansion shape is biased towards outward expansion. Therefore, the overall expansion of the anal dilator will cause unnecessary discomfort to the patient and needs to be improved. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a gastrointestinal surgical anal dilation device that is easy to disassemble and clean, thereby solving the problem that the overall outward expansion of the anal dilator may cause unnecessary discomfort to the patient.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a gastrointestinal surgical anal dilation device that is easy to disassemble and clean, comprising a base, a first anal dilation piece and a second anal dilation piece are arranged above the base, a window is opened on the surface of the first anal dilation piece, the inner wall of the base is symmetrically slidably connected with a sliding seat body, the sliding seat body includes a first sliding seat and a second sliding seat, a threaded telescopic rod is fixedly connected at the center of the outer wall of the sliding seat body, the other end of the threaded telescopic rod is rotatably connected to the inner wall of the base, a rotating ring is slidably connected to the surface of the base, a tooth groove is opened on the lower surface of the rotating ring, the outer wall of the other end of the threaded telescopic rod is fixedly connected with a tooth ring, the tooth end of the tooth ring is meshed with the tooth groove, and a fixing component is arranged inside the base, and the fixing component is used to fix the first anal dilation piece and the second anal dilation piece.

[0006] Preferably, the fixing assembly includes a plurality of positioning columns and positioning holes, the top ends of the plurality of positioning columns are fixedly mounted on the bottom ends of the first anal expansion piece and the second anal expansion piece respectively, the positioning holes are opened on the surface of the sliding seat body, and the positions of the positioning columns and the positioning holes correspond one to one.

[0007] Preferably, the fixing component further comprises two raised layers, the two raised layers are respectively arranged on the front and rear sides of the inner wall of the base, and the outer walls of the raised layers are fixedly connected to the inner wall of the base.

[0008] Preferably, the fixing assembly further comprises four clamping blocks, which are respectively arranged on both sides of the first anal expansion piece and the second anal expansion piece, and the lower side wall of the first anal expansion piece is fixedly connected to the outer wall of the adjacent clamping block.

[0009] Preferably, the surfaces of the second anal expansion piece and the second sliding seat are provided with biased outward expansion components, and the biased outward expansion components include a receiving groove, and the receiving groove is opened on the surface of the second anal expansion piece, and a rotating anal expansion piece is arranged inside the receiving groove, and the rotating anal expansion piece is composed of two arc-shaped plates connected by an axis rotation.

[0010] Preferably, arc-shaped grooves 1 are respectively opened on both sides of the upper surface of the storage groove, arc-shaped grooves 2 are respectively opened on both sides of the lower surface of the storage groove, the arc-shaped grooves 2 penetrate the second anal expansion plate, and connecting columns are respectively fixedly connected on both sides of the upper surface of the rotating anal expansion plate, and one end of the two connecting columns are respectively slidably connected to the inner walls of the two arc-shaped grooves 1.

[0011] Preferably, both sides of the lower surface of the rotary anal expansion piece are respectively fixedly connected with limiting columns, the outer wall of the limiting column is fixedly connected with a sliding block, and the outer wall of the sliding block is slidably connected with the inner wall of the second arc groove.

[0012] Preferably, a first spring is fixedly connected to the outer wall of the sliding block, and the other end of the first spring is fixedly mounted on the side wall of the second arc-shaped groove.

[0013] Preferably, the biased outward expansion component also includes an arc-shaped groove, a plurality of arc-shaped slots and two sliding grooves, the groove is opened on the surface of the second sliding seat, the slot is opened on the lower surface of the second sliding seat, and the two sliding grooves are respectively opened on the lower surface of the second sliding seat.

[0014] Preferably, the inner wall of the sliding groove is slidably connected to an adjustment seat, a mounting groove is opened on the surface of the adjustment seat, a U-shaped hook plate is arranged inside the mounting groove, the outer wall of the hook plate passes through the lower surface of the adjustment seat, a second spring is fixedly connected to the inner top wall of the hook plate, one end of the second spring is fixedly installed on the inner wall of the mounting groove, and a plug column is fixedly connected to the upper surface of the hook plate.

[0015] Working principle: when in use, first install the first anal expander and the second anal expander, rotate the rotating ring to drive the tooth groove to rotate, the rotation of the tooth groove drives the two tooth rings to rotate, and the tooth ring drives the threaded telescopic rod to rotate and contract, so that the two sliding seat bodies slide outward and expand respectively until they are close to the rotating ring, align and insert the positioning column into the positioning hole, so that the first anal expander and the second anal expander are respectively inserted into the first sliding seat and the second sliding seat to achieve lateral limitation, and then rotate the rotating ring in the opposite direction to make the two sliding seat bodies move relative to each other until the first anal expander and the second anal expander are merged, and at this time the card block slides to the bottom of the raised layer, and the raised layer is used to resist the card block, thereby achieving vertical limitation of the first anal expander and the second anal expander, so that the first anal expander and the second anal expander are quickly installed on the sliding seat body, and after use, by moving the sliding seat body close to the rotating ring again, the first anal expander and the second anal expander can be removed for cleaning, and the position of the sliding seat body can be adjusted by rotating the rotating ring, so that the first anal expander and the second anal expander can be quickly installed or disassembled.

[0016] By rotating the rotating ring, the expansion range of the first anal dilator and the second anal dilator can be adjusted during the operation. When inserted into the anus, the first anal dilator and the second anal dilator are combined to reduce the volume, which facilitates entry into the anus while reducing damage to the anus. Then the rotating ring can be rotated to slowly expand the first anal dilator and the second anal dilator, so that the patient's anus and anal canal can be gradually and adjustably expanded outward, so that the patient's anal sphincter can gradually adapt to the expansion range, reduce the occurrence of anal fissures, and relieve the patient's pain.

[0017] After the initial outward expansion is completed, the window is aligned with the lesion point, which is convenient for medical personnel to use for surgical treatment of the lesion. When it is necessary to expand the direction opposite to the lesion point to accommodate a narrow and long medical device, the hook plate is pulled down to make the plug column exit the slot, and the adjustment seat can be pushed to move along the sliding slot. When the adjustment seat moves, it pushes the limit column inserted into the slot to move. The movement of the limit column drives the rotary anal expander to rotate. When the rotary anal expander rotates, it can expand unilaterally in the direction opposite to the lesion point. When the rotary anal expander expands to a certain extent, the hook plate is released, and the hook plate allows the plug column to be inserted into the slot at the corresponding position through the elastic force of the second spring, thereby limiting the expansion range of the rotary anal expander to avoid contraction during surgery and affecting the progress of the surgery. The device drives the expansion of the rotary anal expander by pushing the adjustment seat. Without affecting the disassembly of the second anal expander, the surface of the second anal expander can be expanded unilaterally when inserted into the anus, thereby avoiding unnecessary all-round expansion and effectively alleviating the patient's discomfort.

[0018] The present invention provides a gastrointestinal surgery anal dilation device that is easy to disassemble and clean. It has the following beneficial effects: 1. The present invention inserts the first anal dilator and the second anal dilator into the anus in combination, which facilitates entry into the anus while reducing damage to the anus. By rotating the rotating ring, the first anal dilator and the second anal dilator can gradually slide and expand, so that the patient's anus and anal canal can gradually expand outward under the precise operation of medical staff, so that the patient's anal sphincter gradually adapts to the extent of being stretched, preventing the occurrence of anal fissures and alleviating the patient's pain.

[0019] 2. The present invention unfolds the first anal dilator and the second anal dilator to the maximum extent, inserts the first anal dilator and the second anal dilator into the first sliding seat and the second sliding seat respectively, and then automatically fixes the first anal dilator and the second anal dilator when the first anal dilator and the second anal dilator are slid together to prevent the first anal dilator and the second anal dilator from falling off during use, thereby improving stability during use and installation efficiency.

[0020] 3. After the operation is completed, the present invention can rotate the rotating ring to quickly disassemble the first anal dilator and the second anal dilator, so that the first anal dilator and the second anal dilator can be cleaned and disinfected separately, making the cleaning more comprehensive and avoiding dead corners of cleaning or disinfection inside. The rubber layer increases the resistance when the block is moved out, so that the medical staff needs to exert force to push the rotating ring to rotate, which reminds the medical staff to pay attention to the fact that the first anal dilator or the second anal dilator is about to be opened, avoiding misoperation.

[0021] 4. The present invention drives the expansion of the rotary anal dilator by pushing the adjustment seat, without affecting the disassembly of the second anal dilator, so that when the second anal dilator is inserted into the anus, the rotary anal dilator on the surface of the second anal dilator expands unilaterally in the direction opposite to the lesion point, thereby eliminating the need for overall expansion and effectively alleviating the patient's discomfort caused by the expansion. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the base of the present invention; Figure 3 It is a schematic diagram of the structure of the fixed component of the present invention; Figure 4 For the present invention Figure 3 A magnified image of point A; Figure 5 This is a schematic diagram of the structure of the biased outward expansion component of the present invention; Figure 6 For the present invention Figure 5 The enlarged view of point B; Figure 7 It is a schematic diagram of the structure of the second anal dilator and the rotary anal dilator of the present invention; Figure 8 It is a schematic diagram of the storage tank structure of the present invention; Fig. 9 For the present invention Figure 8 Enlarged view of point C.

[0023] Among them, 1. base; 2. first anal expansion piece; 3. second anal expansion piece; 4. window; 5. sliding seat body; 51. first sliding seat; 52. second sliding seat; 6. threaded telescopic rod; 7. rotating ring; 8. biased outward expansion component; 801. storage groove; 802. limit column; 803. rotating anal expansion piece; 804. arc groove one; 805. arc groove two; 806. connecting column; 807. slider; 808. first spring; 809. slot; 810. card slot; 811. sliding slot; 812. adjustment seat; 813. installation slot; 814. hook plate; 815. second spring; 816. plug column; 9. fixing component; 91. positioning column; 92. positioning hole; 93. raised layer; 94. block; 10. gear ring; 11. rubber layer. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings 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.

[0025] Example: Please refer to the attached Figure 1 -Attached Figure 2 The embodiment of the present invention provides a gastrointestinal surgical anal dilation device that is easy to disassemble and clean, including a base 1, a first anal dilation piece 2 and a second anal dilation piece 3 are arranged above the base 1, a window 4 is opened on the surface of the first anal dilation piece 2, the inner wall of the base 1 is symmetrically slidably connected with a sliding seat body 5, the sliding seat body 5 includes a first sliding seat 51 and a second sliding seat 52, a threaded telescopic rod 6 is fixedly connected at the center of the outer wall of the sliding seat body 5, the other end of the threaded telescopic rod 6 is rotatably connected to the inner wall of the base 1, and a rotating ring 7 is slidably connected to the surface of the base 1. A tooth groove is provided on the lower surface of the ring 7, and a tooth ring 10 is fixedly connected to the outer wall of the other end of the threaded telescopic rod 6. The tooth end of the tooth ring 10 is meshed with the tooth groove. A fixing component 9 is provided inside the base 1. The fixing component 9 is used to fix the first anal dilator 2 and the second anal dilator 3. The threaded telescopic rod 6 includes a threaded rod end and a threaded barrel end connected in a threaded manner. The end connected to the base 1 is the threaded barrel end, and the end connected to the sliding seat body 5 is the threaded rod end. The thread directions of the two groups of threaded telescopic rods 6 are the same, so that the two groups of threaded telescopic rods 6 can be extended and retracted synchronously.

[0026] Specifically, the base 1 is used for medical staff to hold, the first anal dilator 2 and the second anal dilator 3 are used to expand the anus, the sliding seat body 5 is used for the first anal dilator 2 and the second anal dilator 3 to be plugged in with the cooperation of the fixing component 9, the threaded telescopic rod 6 rotates to drive the sliding seat body 5 to slide, and the sliding of the sliding seat body 5 can adjust the spacing between the first anal dilator 2 and the second anal dilator 3, and the rotating ring 7 is used for medical staff to manually rotate, and the rotating ring 7 is used for the engagement of the tooth groove and the gear ring 10 to drive the gear ring 10 to rotate, and the gear ring 10 drives the threaded barrel end to rotate, and the rotation of the threaded barrel end can rotate and move along the threaded rod end, so as to adjust the length of the threaded telescopic rod 6, so that the medical staff can adjust the spacing between the first anal dilator 2 and the second anal dilator 3 when rotating the rotating ring 7, and facilitate the insertion of the first anal dilator 2 and the second anal dilator 3 into the anus when they are combined, and the first anal dilator 2 and the second anal dilator 3 can gradually open the anus when expanding, so as to facilitate the entry of surgical instruments.

[0027] Please refer to the attached Figure 3 -Attached Figure 4 The fixing assembly 9 includes a plurality of positioning posts 91 and positioning holes 92. The top ends of the plurality of positioning posts 91 are fixedly mounted on the bottom ends of the first anal expansion piece 2 and the second anal expansion piece 3, respectively. The positioning holes 92 are provided on the surface of the sliding seat body 5. The positions of the positioning posts 91 and the positioning holes 92 correspond one to one. The fixing assembly 9 also includes two raised layers 93. The two raised layers 93 are respectively arranged on the front and rear sides of the inner wall of the base 1. The outer wall of the raised layer 93 is fixedly connected to the inner wall of the base 1. The fixing assembly 9 also includes four card blocks 94. The four card blocks 94 are respectively arranged on both sides of the first anal expansion piece 2 and the second anal expansion piece 3. The lower side wall of the first anal expansion piece 2 is fixedly connected to the outer wall of the adjacent card blocks 94. The first anal dilator 2 and the second anal dilator 3 are fixedly connected. When the first anal dilator 2 and the second anal dilator 3 are inserted into the sliding seat body 5, the top surface of the block 94 and the ground of the raised layer 93 are maintained at the same horizontal plane, thereby achieving stable fitting and limiting of the two. Rubber layers 11 are respectively embedded and fixedly provided at the edges of both sides of the lower surface of the raised layer 93, which are used to increase resistance when the block 94 is moved out, so that the medical staff needs to apply force to make the block 94 compress the rubber layer 11 to push the rotating ring 7 to rotate, so that the medical staff notices that the block 94 is about to detach from the raised layer 93 when rotating the rotating ring 7, so as to prevent the medical staff from accidentally turning the rotating ring 7 and causing the first anal dilator 2 or the second anal dilator 3 to be accidentally opened and fall off.

[0028] Specifically, a certain gap is left between the raised layer 93 and the area of ​​the rotating ring 7 located inside the base 1 for the block 94 to pass through, so that when the sliding seat body 5 moves to the gap, the first anal dilator 2 or the second anal dilator 3 can be pulled out or inserted through the gap, and the positioning column 91 is inserted into the positioning hole 92, so that the first anal dilator 2 and the second anal dilator 3 and the sliding seat body 5 can be plugged in and matched, and then the rotating ring 7 is rotated to make the first anal dilator 2 and the second anal dilator 3 retracted, and the block 94 under the first anal dilator 2 and the second anal dilator 3 is inserted under the raised layer 93 for automatic limiting, so that the first anal dilator 2 and the second anal dilator 3 fall off during use, thereby realizing the rapid fixation and disassembly of the first anal dilator 2 and the second anal dilator 3, facilitating post-operative cleaning and disinfection, thereby enabling repeated use and saving costs.

[0029] Please refer to the attached Figure 7 -Attached Fig. 9 The second anal expansion piece 3 and the second sliding seat 52 are provided with a biased outward expansion component 8 on their surfaces. The biased outward expansion component 8 includes a receiving groove 801. The receiving groove 801 is opened on the surface of the second anal expansion piece 3. A rotating anal expansion piece 803 is arranged inside the receiving groove 801. The rotating anal expansion piece 803 is composed of two arc-shaped plates connected by an axis. The two sides of the upper surface of the receiving groove 801 are respectively provided with an arc groove 1 804, and the two sides of the lower surface of the receiving groove 801 are respectively provided with an arc groove 2 805. The arc groove 2 805 runs through the lower side area of ​​the second anal expansion piece 3. The upper surface of the rotating anal expansion piece 803 Connecting columns 806 are fixedly connected on both sides, and one end of the two connecting columns 806 is slidably connected to the inner walls of the two arc-shaped grooves 804 respectively. Limiting columns 802 are fixedly connected on both sides of the lower surface of the rotating anal expansion piece 803, and the outer wall of the limiting column 802 is fixedly connected to a slider 807, and the outer wall of the slider 807 is slidably connected to the inner wall of the arc-shaped groove 805. The outer wall of the slider 807 is fixedly connected to a first spring 808, and the other end of the first spring 808 is fixedly installed on the side wall of the arc-shaped groove 805. One end of the limiting column 802 passes through the arc-shaped groove 805 and extends out.

[0030] Specifically, the connecting column 806 can slide on the inner wall of the arc-shaped groove 1 804 to provide sliding support for the top end of the rotating anal dilator 803. The storage groove 801 is used to store the rotating anal dilator 803. The force applied to the slider 807 by the first spring 808 is kept at the outer end of the arc-shaped groove 2 805, so that the rotating anal dilator 803 is unfolded into an arc and is stored in the storage groove 801 with the same arc as the second anal dilator 3, thereby preventing the rotating anal dilator 803 from hitting the patient when inserted.

[0031] Please refer to the attached Figure 5 -Attached Figure 6The biased outward expansion component 8 also includes an arc-shaped slot 809, a plurality of arc-shaped slots 810 and two sliding slots 811. The slot 809 is provided on the surface of the second sliding seat 52, the slot 810 is provided on the lower surface of the second sliding seat 52, and the two sliding slots 811 are respectively provided on the lower surface of the second sliding seat 52. The inner wall of the sliding slot 811 is slidably connected with an adjustment seat 812. The surface of the adjustment seat 812 is provided with a mounting slot 813. A U-shaped hook plate 814 is arranged inside the mounting slot 813. The outer wall of the hook plate 814 passes through the lower surface of the adjustment seat 812. The inner top wall of the hook plate 814 is fixedly connected with a second spring 815. One end of the second spring 815 is fixedly installed on the inner wall of the mounting slot 813. The upper surface of the hook plate 814 is fixedly connected with a plug column 816.

[0032] Specifically, the slot 809 is used for the limiting column 802 to pass through, so that when the adjusting seat 812 moves, the limiting column 802 can be pushed to move, thereby driving the rotating anal expansion piece 803 to rotate, and the sliding slot 811 is used to slide and support the adjusting seat 812. One end of the hook plate 814 is set in the installation slot 813 and the other end is set outside the installation slot 813. The hook plate 814 can slide along the adjusting seat 812. The top of the hook plate 814 is against the inner top wall of the installation slot 813 through the elastic force of the second spring 815, so that the plug column 816 can be tightly inserted into the card slot 810 just above, and the position of the adjusting seat 812 is locked. For narrow and long medical devices, in order to facilitate their insertion into the anus after expansion, it is often necessary to put the patient's anus in the The anal expansion device can be expanded to a greater extent in a circular or nearly circular shape. However, in actual operation, only the direction of the lesion point and the direction opposite to it needs to be expanded to a greater extent to accommodate medical devices. The expansion range requirements in other directions are relatively low. Therefore, the traditional integral expansion will cause unnecessary pain to the patient. The device pulls down the hook plate 814 to make the plug post 816 withdraw from the slot 810, thereby pushing the adjustment seat 812 to slide. The sliding of the adjustment seat 812 drives the limit post 802 to move. The movement of the limit post 802 drives the rotating anal expansion piece 803 to bulge outward, thereby achieving unilateral expansion on the basis of the expansion of the first anal expansion piece 2 and the second anal expansion piece 3, thereby facilitating the entry of narrow and long medical devices and reducing the discomfort of patients.

[0033] 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 gastrointestinal surgical anal dilation device that is easy to disassemble and clean, comprising a base (1), characterized in that: A first anal expansion piece (2) and a second anal expansion piece (3) are arranged above the base (1), a window (4) is provided on the surface of the first anal expansion piece (2), a sliding seat body (5) is symmetrically slidably connected to the inner wall of the base (1), the sliding seat body (5) comprises a first sliding seat (51) and a second sliding seat (52), a threaded telescopic rod (6) is fixedly connected at the center of the outer wall of the sliding seat body (5), the other end of the threaded telescopic rod (6) is rotatably connected to the inner wall of the base (1), a rotating ring (7) is slidably connected to the surface of the base (1), a tooth groove is provided on the lower surface of the rotating ring (7), a tooth ring (10) is fixedly connected to the outer wall of the other end of the threaded telescopic rod (6), the tooth end of the tooth ring (10) is meshed with the tooth groove, and a fixing component (9) is arranged inside the base (1), the fixing component (9) is used to fix the first anal expansion piece (2) and the second anal expansion piece (3).

2. The gastrointestinal surgery anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: The fixing assembly (9) comprises a plurality of positioning columns (91) and positioning holes (92), the top ends of the plurality of positioning columns (91) being fixedly mounted on the bottom ends of the first anal expansion piece (2) and the second anal expansion piece (3), respectively, the positioning holes (92) being formed on the surface of the sliding seat body (5), and the positions of the positioning columns (91) and the positioning holes (92) corresponding to each other.

3. The gastrointestinal surgery anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: The fixing assembly (9) further comprises two raised layers (93), the two raised layers (93) being respectively arranged on the front and rear sides of the inner wall of the base (1), the outer wall of the raised layer (93) being fixedly connected to the inner wall of the base (1), and the rubber layers (11) being respectively embedded and connected at the edges on both sides of the lower surface of the raised layer (93).

4. The gastrointestinal surgery anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: The fixing assembly (9) further comprises four clamping blocks (94), wherein the four clamping blocks (94) are respectively arranged on both sides of the first anal expansion piece (2) and the second anal expansion piece (3), and the lower side wall of the first anal expansion piece (2) is fixedly connected to the outer wall of an adjacent clamping block (94).

5. The gastrointestinal surgery anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: The surfaces of the second anal expansion piece (3) and the second sliding seat (52) are provided with a biased outward expansion component (8), and the biased outward expansion component (8) includes a receiving groove (801), and the receiving groove (801) is opened on the surface of the second anal expansion piece (3), and a rotating anal expansion piece (803) is arranged inside the receiving groove (801), and the rotating anal expansion piece (803) is composed of two arc-shaped plates connected by an axis.

6. The gastrointestinal surgery anal dilation device that is easy to disassemble and clean according to claim 5, characterized in that: Arc-shaped grooves 1 (804) are respectively provided on both sides of the upper surface of the receiving groove (801), and arc-shaped grooves 2 (805) are respectively provided on both sides of the lower surface of the receiving groove (801), and the arc-shaped grooves 2 (805) penetrate the second anal expansion piece (3). Connecting columns (806) are respectively fixedly connected to both sides of the upper surface of the rotating anal expansion piece (803), and one end of the two connecting columns (806) is respectively slidably connected to the inner walls of the two arc-shaped grooves 1 (804).

7. The gastrointestinal surgery anal dilation device that is easy to disassemble and clean according to claim 5, characterized in that: The two sides of the lower surface of the rotating anal expansion piece (803) are respectively fixedly connected to the limiting columns (802), the outer wall of the limiting columns (802) is fixedly connected to the sliding block (807), and the outer wall of the sliding block (807) is slidably connected to the inner wall of the second arc-shaped groove (805).

8. The gastrointestinal surgery anal dilation device that is easy to disassemble and clean according to claim 7, characterized in that: The outer wall of the sliding block (807) is fixedly connected to a first spring (808), and the other end of the first spring (808) is fixedly mounted on the side wall of the second arc-shaped groove (805).

9. The gastrointestinal surgery anal dilation device that is easy to disassemble and clean according to claim 5, characterized in that: The biased outward expansion component (8) further comprises an arc-shaped slot (809), a plurality of arc-shaped locking slots (810) and two sliding slots (811), wherein the slot (809) is formed on the surface of the second sliding seat (52), the locking slot (810) is formed on the lower surface of the second sliding seat (52), and the two sliding slots (811) are respectively formed on the lower surface of the second sliding seat (52).

10. The gastrointestinal surgery anal dilation device that is easy to disassemble and clean according to claim 9, characterized in that: The inner wall of the sliding groove (811) is slidably connected to an adjustment seat (812), a mounting groove (813) is provided on the surface of the adjustment seat (812), a U-shaped hook plate (814) is arranged inside the mounting groove (813), the outer wall of the hook plate (814) passes through the lower surface of the adjustment seat (812), the inner top wall of the hook plate (814) is fixedly connected to a second spring (815), one end of the second spring (815) is fixedly installed on the inner wall of the mounting groove (813), and the upper surface of the hook plate (814) is fixedly connected to a plug post (816).

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