An anorectal surgical dilator device which is easy to disassemble and clean

Abstract

The application relates to the technical field of medical devices, and discloses an anal and gastrointestinal surgical anal dilatation equipment convenient to disassemble and clean, the upper portion of a base is provided with first anal dilatation pieces and second anal dilatation pieces, a window is formed in the surface of the first anal dilatation piece, the inner wall of the base is symmetrically connected with sliding seats in a sliding mode, the sliding seat comprises a first sliding seat and a second sliding seat, a screw telescopic rod is fixedly connected to the center of the outer wall of the sliding seat, a gear groove is formed in the lower surface of a rotating ring, the gear end of a gear ring is in meshing connection with the gear groove, a fixing assembly is arranged in the base, and the fixing assembly is used for fixing the first anal dilatation pieces and the second anal dilatation pieces. The first anal dilatation pieces and the second anal dilatation pieces are combined and inserted into the anus, the anus is conveniently entered, and the damage to the anus is reduced, the first anal dilatation pieces and the second anal dilatation pieces can be gradually slid and unfolded by rotating the rotating ring, and therefore the anal sphincter of a patient can gradually adapt to the dilated range.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a gastrointestinal surgical anal dilation device that is easy to disassemble and clean. Background Technology

[0002] In colorectal surgery, examinations, diagnoses, or surgical treatments require opening the anus before inserting other surgical instruments. Currently, the most commonly used surgical instrument for opening the anus is the anal dilator, which consists of a cylindrical body and a wide, force-applying side at the tail end. Its rigid cylindrical body opens the anus, while the hollow portion inside the cylinder serves as a passageway for other surgical instruments to enter the patient's body. The dilator is then slowly unfolded to open the anal sphincter.

[0003] During gastrointestinal surgery, the lesion is placed at the window of the anal dilator and treated with medical instruments. When the lesion is below, a larger outward expansion is needed in the vertical direction to accommodate the instruments, while the outward expansion in the horizontal direction is relatively smaller. Therefore, the more fitting outward expansion shape tends to be outward. As a result, the overall outward expansion of the anal dilator can cause unnecessary discomfort to the patient and needs to be improved. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a gastrointestinal surgical anal dilation device that is easy to disassemble and clean, thus solving the problem that the overall outward expansion of the anal dilator can cause unnecessary discomfort to patients.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a gastrointestinal surgical anal dilation device that is easy to disassemble and clean, comprising a base, a first anal dilator and a second anal dilator disposed on the upper part of the base, the surface of the first anal dilator having a window, a sliding seat body symmetrically slidably connected to the inner wall of the base, the sliding seat body including a first sliding seat and a second sliding seat, a threaded telescopic rod fixedly connected to the center of the outer wall of the sliding seat body, the other end of the threaded telescopic rod being rotatably connected to the inner wall of the base, a rotating ring slidably connected to the surface of the base, the lower surface of the rotating ring having a toothed groove, a toothed ring fixedly connected to the outer wall of the other end of the threaded telescopic rod, the toothed end of the toothed ring engaging with the toothed groove, and a fixing component disposed inside the base for fixing the first anal dilator and the second anal dilator.

[0006] Preferably, the fixing component includes a plurality of positioning posts and positioning holes. The top ends of the plurality of positioning posts are respectively fixedly installed at the bottom ends of the first anal dilator and the second anal dilator. The positioning holes are opened on the surface of the sliding seat body, and the positions of the positioning posts and the positioning holes correspond one-to-one.

[0007] Preferably, the fixing component further includes two raised layers, which are respectively disposed 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 component further includes four locking blocks, which are respectively disposed on both sides of the first anal dilator and the second anal dilator, and the lower side wall of the first anal dilator is fixedly connected to the outer wall of the adjacent locking block.

[0009] Preferably, the surfaces of the second anal dilator and the second sliding seat are provided with an outward dilator assembly, the outward dilator assembly including a receiving groove, the receiving groove being formed on the surface of the second anal dilator, and a rotating anal dilator being provided inside the receiving groove, the rotating anal dilator being composed of two arc-shaped plates rotatably connected by a shaft.

[0010] Preferably, an arc-shaped groove 1 is provided on both sides of the upper surface of the storage groove, and an arc-shaped groove 2 is provided on both sides of the lower surface of the storage groove. The arc-shaped groove 2 penetrates the second anal dilator. Connecting columns are fixedly connected to both sides of the upper surface of the rotating anal dilator, and one end of the two connecting columns is slidably connected to the inner wall of the two arc-shaped grooves 1 respectively.

[0011] Preferably, limiting posts are fixedly connected to both sides of the lower surface of the rotating anal dilator, and a slider is fixedly connected to the outer wall of the limiting post. The outer wall of the slider is slidably connected to the inner wall of the arc-shaped groove.

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

[0013] Preferably, the outwardly expanding component further includes an arc-shaped slot, a plurality of arc-shaped slots, and two sliding slots. The slot is formed on the surface of the second sliding seat, the slots are formed on the lower surface of the second sliding seat, and the two sliding slots are formed on the lower surface of the second sliding seat.

[0014] Preferably, an adjusting seat is slidably connected to the inner wall of the sliding groove, an installation groove is provided on the surface of the adjusting seat, a U-shaped hook plate is provided inside the installation groove, the outer wall of the hook plate penetrates the lower surface of the adjusting 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 installation groove, and a pin is fixedly connected to the upper surface of the hook plate.

[0015] Working principle: In use, first install the first and second anal dilators. Rotating the rotating ring drives the toothed groove to rotate, which in turn drives the two toothed rings to rotate. The toothed rings then drive the threaded telescopic rod to rotate and retract, causing the two sliding seat bodies to slide outwards until they are close to the rotating ring. Align the positioning pin and insert it into the positioning hole, so that the first and second anal dilators are respectively inserted into the first and second sliding seats, achieving lateral limitation. Then, rotate the rotating ring in the opposite direction, causing the two sliding seat bodies to move relative to each other until the first and second anal dilators merge. At this time, the locking block slides to the bottom of the protruding layer, and the protruding layer abuts against the locking block, thereby achieving vertical limitation of the first and second anal dilators. This allows the first and second anal dilators to be quickly installed on the sliding seat bodies. After use, by moving the sliding seat bodies closer to the rotating ring again, the first and second anal dilators can be removed for cleaning. By rotating the rotating ring to adjust the position of the sliding seat bodies, the first and second anal dilators can be quickly installed or removed.

[0016] The rotation ring allows for adjustment of the opening range of the first and second anal dilators during surgery. When inserted into the anus, the first and second dilators merge to reduce their volume, facilitating entry and minimizing damage. The rotation ring can then be rotated to gradually open the first and second dilators, allowing the patient's anus and anal canal to gradually and adjustably expand outwards. This helps the patient's anal sphincter gradually adapt to the expanded range, reducing the occurrence of anal fissures and alleviating the patient's pain.

[0017] After the initial expansion is completed, the window is aligned with the lesion point to facilitate surgical treatment by medical personnel. When it is necessary to expand outward in the direction opposite the lesion point to accommodate a long and narrow medical instrument, the hook plate is pulled down to disengage the insertion post from the slot. Then, the adjusting seat can be pushed to move along the sliding groove. As the adjusting seat moves, it pushes the limiting post inserted into the slot to move. The movement of the limiting post causes the rotating anal dilator to rotate. When the rotating anal dilator rotates, it can expand outward in one side in the direction opposite the lesion point. When the rotating anal dilator expands outward to a certain extent, the hook plate is released. The hook plate, through the elastic force of the second spring, causes the insertion post to insert into the corresponding slot, thereby limiting the expansion range of the rotating anal dilator and preventing contraction during surgery from affecting the operation. This device expands the rotating anal dilator by pushing the adjusting seat. Without affecting the disassembly of the second anal dilator, the surface of the second anal dilator can expand outward in one side when inserted into the anus, avoiding unnecessary all-round expansion and effectively reducing patient discomfort.

[0018] This invention provides a gastrointestinal surgical anal dilation device that is easy to disassemble and clean. It has the following beneficial effects:

[0019] 1. This invention uses a first and a second anal dilator inserted together into the anus, which facilitates entry into the anus while reducing damage to the anus. By rotating the rotating ring, the first and second anal dilators can be gradually slid open, allowing the patient's anus and anal canal to be gradually expanded under the precise operation of medical staff. This allows the patient's anal sphincter to gradually adapt to the degree of expansion, preventing anal fissures and reducing the patient's pain.

[0020] 2. The present invention unfolds the first and second anal dilators to their maximum extent, inserts the first and second anal dilators into the first and second sliding seats respectively, and then automatically fixes the first and second anal dilators when they slide together, preventing them from falling off during use, thereby improving stability and installation efficiency.

[0021] 3. After the surgery, the first and second anal dilators can be quickly disassembled by rotating the rotating ring, allowing them to be cleaned and disinfected separately. This makes the cleaning more thorough and avoids dead corners in the cleaning or disinfection process. The rubber layer increases resistance when the locking block is removed, requiring medical staff to apply force to rotate the ring. This serves as a reminder to medical staff that the first or second anal dilator is about to be opened, preventing misoperation.

[0022] 4. This invention expands the rotating anal dilator by pushing the adjustment seat, so that when the second anal dilator is inserted into the anus, the rotating anal dilator on its surface expands outward on one side in the direction opposite the lesion point without affecting the disassembly of the second anal dilator, thus eliminating the need for overall expansion and effectively reducing the discomfort caused to the patient by expansion. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the base of the present invention;

[0025] Figure 3 This is a schematic diagram of the unfolded structure of the fixed component of the present invention;

[0026] Figure 4 For the present invention Figure 3 Enlarged view of point A;

[0027] Figure 5 This is a schematic diagram of the biased outward expansion component structure of the present invention;

[0028] Figure 6 For the present invention Figure 5 Enlarged view of point B;

[0029] Figure 7 This is a schematic diagram of the structure of the second anal dilator and the rotating anal dilator of the present invention;

[0030] Figure 8 This is a schematic diagram of the storage slot structure of the present invention;

[0031] Figure 9 For the present invention Figure 8 Enlarged view of point C.

[0032] The components include: 1. Base; 2. First anal dilator; 3. Second anal dilator; 4. Window; 5. Sliding seat body; 51. First sliding seat; 52. Second sliding seat; 6. Threaded telescopic rod; 7. Rotating ring; 8. Outwardly expanding component; 801. Storage groove; 802. Limiting post; 803. Rotating anal dilator; 804. Arc groove one; 805. Arc groove two; 806. Connecting post; 807. Slider; 808. First spring; 809. Slot; 810. Slot; 811. Sliding groove; 812. Adjusting seat; 813. Mounting groove; 814. Hook plate; 815. Second spring; 816. Insert post; 9. Fixing component; 91. Positioning post; 92. Positioning hole; 93. Protruding layer; 94. Locking block; 10. Toothed ring; 11. Rubber layer. Detailed Implementation

[0033] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Example:

[0035] Please see the appendix Figure 1 - Appendix Figure 2This invention provides a gastrointestinal surgical anal dilation device that is easy to disassemble and clean. It includes a base 1, with a first dilator 2 and a second dilator 3 positioned above the base 1. The surface of the first dilator 2 has a window 4. A sliding seat body 5 is symmetrically slidably connected to the inner wall of the base 1. 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 to 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. The lower surface of the ring 7 is provided with a toothed groove. The outer wall of the other end of the threaded telescopic rod 6 is fixedly connected to a toothed ring 10. The toothed end of the toothed ring 10 is engaged with the toothed groove. The base 1 is provided with a fixing component 9. The fixing component 9 is used to fix the first anal dilator 2 and the second anal dilator 3. The threaded telescopic rod 6 consists of a threaded rod end and a threaded cylinder end. The end connected to the base 1 is the threaded cylinder end, and the end connected to the sliding seat body 5 is the threaded rod end. The threads of the two sets of threaded telescopic rods 6 are in the same direction, so that the two sets of threaded telescopic rods 6 can extend and retract synchronously.

[0036] Specifically, the base 1 is for medical staff to hold, the first anal dilator 2 and the second anal dilator 3 are used to dilate the anus, the sliding seat body 5 is for the first anal dilator 2 and the second anal dilator 3 to be inserted with the cooperation of the fixing component 9, the rotation of the threaded telescopic rod 6 is used to drive the sliding seat body 5 to slide, the sliding seat body 5 can adjust the distance between the first anal dilator 2 and the second anal dilator 3, the rotating ring 7 is for medical staff to rotate manually, the rotation of the rotating ring 7 is used to mesh the toothed groove with the toothed ring 10 to drive the toothed ring 10 to rotate, the toothed ring 10 drives the threaded cylinder end to rotate, the rotation of the threaded cylinder end can rotate and move along the threaded rod end, so as to adjust the length of the threaded telescopic rod 6, so that medical staff can adjust the distance between the first anal dilator 2 and the second anal dilator 3 when rotating the rotating ring 7, and facilitate insertion into the anus when the first anal dilator 2 and the second anal dilator 3 are combined, and gradually open the anus when the first anal dilator 2 and the second anal dilator 3 are expanded, so as to facilitate the entry of surgical instruments.

[0037] Please see the appendix Figure 3 - Appendix Figure 4The fixing component 9 includes several positioning posts 91 and positioning holes 92. The top ends of the positioning posts 91 are respectively fixedly installed at the bottom ends of the first anal dilator 2 and the second anal dilator 3. The positioning holes 92 are opened 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 component 9 also includes two protruding layers 93, which are respectively disposed on the front and rear sides of the inner wall of the base 1. The outer walls of the protruding layers 93 are fixedly connected to the inner wall of the base 1. The fixing component 9 also includes four locking blocks 94, which are respectively disposed on both sides of the first anal dilator 2 and the second anal dilator 3. The lower side wall of the first anal dilator 2 is fixedly connected to the outer wall of the adjacent locking block 94. 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 locking block 94 and the ground surface of the raised layer 93 are kept at the same level, thereby achieving stable contact and limiting of the two. Rubber layers 11 are embedded and fixedly provided on both sides of the lower surface of the raised layer 93 to increase resistance when the locking block 94 is removed, so that medical staff need to apply force to make the locking block 94 compress the rubber layer 11 to push the rotating ring 7 to rotate. This makes medical staff notice that the locking block 94 is about to disengage from the raised layer 93 when rotating the rotating ring 7, so as to prevent the first anal dilator 2 or the second anal dilator 3 from being accidentally opened and falling off due to the medical staff accidentally rotating the rotating ring 7.

[0038] Specifically, a certain gap is left between the raised layer 93 and the area of ​​the rotating ring 7 located inside the base 1, allowing the locking block 94 to pass through. This allows the sliding seat body 5 to be pulled out or inserted into the gap when it moves to the gap. The positioning post 91 is inserted into the positioning hole 92, which enables the first and second anal dilators 2 and 3 to be inserted into the sliding seat body 5. Then, when the rotating ring 7 is rotated and the first and second anal dilators 2 and 3 are closed, the locking block 94 below the first and second anal dilators 2 and 3 is inserted into the lower part of the raised layer 93 for automatic positioning. This causes the first and second anal dilators 2 and 3 to fall off during use, enabling quick fixation and disassembly of the first and second anal dilators 2 and 3. This facilitates postoperative cleaning and disinfection, allowing for repeated use and saving costs.

[0039] Please see the appendix Figure 7 - Appendix Figure 9The second anal dilator 3 and the second sliding seat 52 are provided with an outwardly expanding component 8. The outwardly expanding component 8 includes a receiving groove 801, which is formed on the surface of the second anal dilator 3. A rotating anal dilator 803 is provided inside the receiving groove 801. The rotating anal dilator 803 is composed of two arc-shaped plates rotatably connected by a shaft. Arc-shaped grooves 804 are formed on both sides of the upper surface of the receiving groove 801, and arc-shaped grooves 805 are formed on both sides of the lower surface of the receiving groove 801. The arc-shaped grooves 805 penetrate the lower area of ​​the second anal dilator 3. Connecting posts 806 are fixedly connected to both sides. One end of each connecting post 806 is slidably connected to the inner wall of each of the two arc-shaped grooves 804. Limiting posts 802 are fixedly connected to both sides of the lower surface of the rotating anal dilator 803. A slider 807 is fixedly connected to the outer wall of the limiting post 802. The outer wall of the slider 807 is slidably connected to the inner wall of the arc-shaped groove 805. A first spring 808 is fixedly connected to the outer wall of the slider 807. 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 post 802 passes through the arc-shaped groove 805 and extends outward.

[0040] Specifically, the connecting post 806 can slide on the inner wall of the arc-shaped groove 804 to provide sliding support for the top of the rotating anal dilator 803. The receiving groove 801 is used to receive the rotating anal dilator 803. The force applied to the slider 807 by the first spring 808 keeps the slider 807 at the outer end of the arc-shaped groove 805, so that the rotating anal dilator 803 unfolds into an arc shape and is stored in the receiving groove 801 with the same curvature as the second anal dilator 3, thereby avoiding the rotating anal dilator 803 from hurting the patient when inserted.

[0041] Please see the appendix Figure 5 - Appendix Figure 6 The outward-expanding component 8 also includes an arc-shaped slot 809, several arc-shaped slots 810, and two sliding grooves 811. The slot 809 is formed on the surface of the second sliding seat 52, the slots 810 are formed on the lower surface of the second sliding seat 52, and the two sliding grooves 811 are respectively formed on the lower surface of the second sliding seat 52. An adjusting seat 812 is slidably connected to the inner wall of the sliding groove 811. An installation groove 813 is formed on the surface of the adjusting seat 812. A U-shaped hook plate 814 is provided inside the installation groove 813. The outer wall of the hook plate 814 penetrates the lower surface of the adjusting seat 812. A second spring 815 is fixedly connected to the inner top wall of the hook plate 814. One end of the second spring 815 is fixedly installed on the inner wall of the installation groove 813. A plug post 816 is fixedly connected to the upper surface of the hook plate 814.

[0042] Specifically, the slot 809 is used for the limiting post 802 to pass through, so that when the adjusting seat 812 moves, it can push the limiting post 802 to move, thereby driving the rotating anal dilator 803 to rotate. The sliding groove 811 is used to slide and support the adjusting seat 812. One end of the hook plate 814 is set in the mounting groove 813 and the other end is set outside the mounting groove 813. The hook plate 814 can slide along the adjusting seat 812. The top of the hook plate 814 abuts against the inner top wall of the mounting groove 813 by the elastic force of the second spring 815, so that the insertion post 816 can be tightly inserted into the slot 810 directly above, locking the position of the adjusting seat 812. For long and narrow medical devices, in order to facilitate their insertion into the dilated anus, it is often necessary to sew the patient's anus closed. While traditional circular or near-circular expansion can be extended to a greater extent, in practice, only the lesion point and its opposite direction require significant expansion to accommodate medical devices. The expansion range in other directions is less critical. Therefore, traditional integral expansion can cause unnecessary pain for patients. This device removes the insertion post 816 from the slot 810 by pulling down the hook plate 814, which in turn pushes the adjusting seat 812 to slide. The sliding of the adjusting seat 812 causes the limiting post 802 to move, and the movement of the limiting post 802 causes the rotating dilator 803 to bulge outward. This achieves unilateral outward expansion on top of the expansion of the first dilator 2 and the second dilator 3, thus facilitating the entry of long and narrow medical devices and reducing patient discomfort.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which 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 dilator (2) and a second anal dilator (3) are provided above the base (1). The surface of the first anal dilator (2) is provided with a window (4). A sliding seat body (5) is symmetrically slidably connected to the inner wall of the base (1). 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 to 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). The lower surface of the rotating ring (7) is provided with a toothed groove. The other end of the threaded telescopic rod (6) is slidably connected to the outer wall of the base (1). A toothed ring (10) is fixedly connected to the wall, and the toothed end of the toothed ring (10) is engaged 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). An outward dilator component (8) is provided on the surface of the second anal dilator (3) and the second sliding seat (52). The outward dilator component (8) includes a receiving groove (801). The receiving groove (801) is opened on the surface of the second anal dilator (3). A rotating anal dilator (803) is provided inside the receiving groove (801). The rotating anal dilator (803) is composed of two arc-shaped plates connected by a shaft.

2. The gastrointestinal surgical anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: The fixing component (9) includes several positioning posts (91) and positioning holes (92). The top ends of the several positioning posts (91) are respectively fixedly installed at the bottom ends of the first anal dilator (2) and the second anal dilator (3). The positioning holes (92) are opened 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.

3. The gastrointestinal surgical anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: The fixing component (9) also includes two raised layers (93), which are respectively disposed 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). Rubber layers (11) are embedded and connected at the two sides of the lower surface of the raised layer (93).

4. The gastrointestinal surgical anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: The fixing component (9) also includes four locking blocks (94), which are respectively disposed on both sides of the first anal dilator (2) and the second anal dilator (3). The lower side wall of the first anal dilator (2) is fixedly connected to the outer wall of the adjacent locking block (94).

5. The gastrointestinal surgical anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: The upper surface of the storage groove (801) is provided with two arc-shaped grooves (804) on both sides, and the lower surface of the storage groove (801) is provided with two arc-shaped grooves (805) on both sides. The arc-shaped grooves (805) penetrate the second anal dilator (3). The upper surface of the rotating anal dilator (803) is fixedly connected with two connecting posts (806) on both sides. One end of the two connecting posts (806) is slidably connected to the inner wall of the two arc-shaped grooves (804).

6. The gastrointestinal surgical anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: Limiting posts (802) are fixedly connected to both sides of the lower surface of the rotating anal dilator (803). A slider (807) is fixedly connected to the outer wall of the limiting post (802). The outer wall of the slider (807) is slidably connected to the inner wall of the arc groove (805).

7. The gastrointestinal surgical anal dilation device that is easy to disassemble and clean according to claim 6, characterized in that: 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 groove (805).

8. The gastrointestinal surgical anal dilation device that is easy to disassemble and clean according to claim 1, characterized in that: The outwardly expanding component (8) also includes an arc-shaped slot (809), several arc-shaped slots (810) and two sliding grooves (811). The slot (809) is formed on the surface of the second sliding seat (52), the slots (810) are formed on the lower surface of the second sliding seat (52), and the two sliding grooves (811) are formed on the lower surface of the second sliding seat (52).

9. A gastrointestinal surgical anal dilation device that is easy to disassemble and clean according to claim 8, characterized in that: An adjusting seat (812) is slidably connected to the inner wall of the sliding groove (811). An installation groove (813) is provided on the surface of the adjusting seat (812). A U-shaped hook plate (814) is provided inside the installation groove (813). The outer wall of the hook plate (814) penetrates the lower surface of the adjusting seat (812). A second spring (815) is fixedly connected to the inner top wall of the hook plate (814). One end of the second spring (815) is fixedly installed on the inner wall of the installation groove (813). A plug (816) is fixedly connected to the upper surface of the hook plate (814).

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