Medical dilator

Abstract

This invention discloses a medical anal dilator, specifically relating to the field of medical anal dilators. It includes a support ring and a support frame arranged in a circular array and slidably mounted thereon. The support frame has two parallel, mutually close sides, and a locking rod is hinged to a side plate fixed to the outer wall of the support ring. The top of the locking rod is movably positioned within a slot formed on an adjacent side of the two sides. The medical anal dilator provided by this invention allows the circular array of the support frame to slide independently or synchronously along the radial direction of the support ring. Doctors can precisely adjust the expansion diameter of the support frame according to the patient's specific physiological structure, solving the problem of poor adaptability. Simultaneously, by utilizing the angle of the locking rod's rotation within the slot, the expansion size of the support frame is effectively locked by locking the rotation angle of the locking rod. The independent structure of the support frame, support ring, and locking rod facilitates subsequent replacement.

Description

Technical Field

[0001] This invention relates to the field of anal dilators, and more specifically to a medical anal dilator. Background Technology

[0002] An anal dilator, as a medical device for anal dilation, is gradually inserted into the patient's anus and uses its cone-shaped structure to dilate the anus, or actively drives the movable support rod on the anal dilator to expand outward to achieve the anal dilation operation.

[0003] According to Chinese Patent Publication No. CN102000387B, published on January 9, 2013, a dilator for expanding the anus and anal canal is disclosed. It includes a cylindrical body and an outwardly wide side, with the wide side located at the proximal end of the body. A hollow dilator cap is located at the distal end of the body. The dilator cap includes a frustum-shaped dilator portion at its proximal end, a conical guide portion at its distal end, and a connecting portion between the dilator portion and the guide portion. The maximum outer diameter of the dilator cap is smaller than the outer diameter of the body. Including the aforementioned patents, the anal dilator gradually increases in diameter from its distal end to its proximal end, thereby achieving a slow dilation effect. However, the size of the dilator cap and the main body are fixed, and the window is located on the outer wall of the main body. Therefore, in actual use, the outer wall of the main body must be tightly fitted to the inside of the anus in order to cooperate with the window for cutting and suturing operations. The adaptability is poor, and the fixed installation is integrated, making it inconvenient to replace and maintain when partially damaged. Summary of the Invention

[0004] The purpose of this invention is to provide a medical anal dilator to solve the above-mentioned technical problems.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a medical anal dilator, comprising a support ring and a support frame slidably disposed thereon in a radial direction and arranged in a circular array, wherein the support frame is provided with two sides that are close to each other and arranged in parallel, and a locking rod is hingedly disposed on a side plate fixedly mounted on the outer wall of the support ring, wherein the top end of the locking rod is movably disposed in a through groove opened on an adjacent side of the two sides.

[0006] Preferably, the outer wall of the support ring is provided with an adjusting sleeve that is rotatably threaded onto the mounting thread, and the bottom end of the locking rod is movably disposed on the inner edge of the adjusting sleeve.

[0007] Preferably, the locking bar is flipped to disengage from the slot.

[0008] Preferably, when the adjusting sleeve moves downward relative to the support ring, the top and bottom ends of the locking rod sequentially disengage from the slot and the inner edge.

[0009] Preferably, a protective member is provided in the gap of the support frame, and an arc-shaped plate is provided on the protective member. An airbag is provided at the top of the edge located inside the support ring, and the airbag is located on one side of the arc-shaped plate.

[0010] Preferably, the device includes a mounting plate, and the symmetrically arranged buckles on the mounting plate are movably disposed in the slots opened on the opposite outer walls of the protective member to clamp the edges.

[0011] Preferably, the airbag component is provided with a protective pad that fits into the arc-shaped plate.

[0012] Preferably, a clamping gap is provided between the arc-shaped plate and the protective component, and the airbag component is provided with a protruding bladder portion that communicates with the airbag component and moves within the clamping gap.

[0013] Preferably, an insertion cavity is provided between the protruding bladder portion and the airbag component, and the arc-shaped plate is inserted into the insertion cavity.

[0014] Preferably, the airbag component is a silicone airbag.

[0015] In the above technical solution, the medical anal dilator provided by the present invention has the following beneficial effects: the circular array of support frames can slide independently or synchronously along the radial direction of the support ring. Doctors can accurately adjust the expansion diameter of the support frame of the anal dilator according to the specific physiological structure of the patient, realize personalized treatment, and solve the problem of poor adaptability. At the same time, by using the angle of the locking rod flipping in the groove, the size of the expansion of the support frame can be indirectly locked by locking the angle of the locking rod flipping. The independent structure of the support frame, support ring and locking rod facilitates subsequent replacement. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention; Figure 2 A schematic diagram showing the disassembled structure between the support frame, protective component, and airbag component provided in an embodiment of the present invention; Figure 3 A schematic diagram of the splicing structure between the support frame, protective component, and airbag component provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the support ring structure provided in an embodiment of the present invention; Figure 5This is a schematic diagram of the overall cross-sectional structure provided in an embodiment of the present invention; Figure 6 Provided for embodiments of the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 Provided for embodiments of the present invention Figure 5 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the structure of the airbag and the arc-shaped plate when they fit into the anus, as provided in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Support frame; 2. Protective component; 3. Airbag component; 4. Mounting plate; 5. Support ring; 6. Adjusting sleeve; 7. Locking rod; 11. Gap section; 12. Edge section; 13. Through groove; 21. Cover plate; 22. Arc plate; 23. Clamping gap; 24. Slot; 31. Insertion cavity; 32. Protective pad; 33. Protruding bladder section; 41. Buckle; 42. Wedge cone section; 51. Slide groove; 52. Side plate; 53. Mounting thread; 54. Grip foot; 61. Movable cavity; 62. Inner edge. Detailed Implementation

[0019] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0020] like Figure 1-8 As shown, a medical anal dilator includes a support ring 5 and a support frame 1 that is slidably disposed on the ring in a radial direction and arranged in a circular array. The support frame 1 has two sides 12 that are close to each other and arranged in parallel. A locking rod 7 is hinged to a side plate 52 that is fixedly installed on the outer wall of the support ring 5. The top end of the locking rod 7 is movably disposed in a through groove 13 opened on an adjacent side of the two sides 12.

[0021] Specifically, the outer wall of the support ring 5 has grooves 51 arranged in a circular array, and the edges 12 are located at both ends of the support frame 1, and the edges 12 and the support frame 1 are an integral structure. The support ring 5 acts as an annular base, and the grooves 51 on it allow the edges 12 on multiple support frames 1 to slide independently or synchronously in a circular array.

[0022] During operation, the doctor can manually adjust the radial position of each support frame 1 according to the specific physiological structure of the patient's anus, thereby precisely controlling the expansion diameter of the anal dilator. The locking rod 7 is hinged to the side plate 52, and its top end is inserted into the groove 13 of the side 12 of the support frame 1. When the support frame 1 slides to the target position, the locking rod 7 is flipped so that it is locked into the groove 13 at a specific angle, thereby locking the movement of the support frame 1 and achieving fixation. This design allows for fine adjustment of the expansion degree of each support frame 1, avoiding the problem of poor adaptability of integrated anal dilators.

[0023] The single locking lever 7 can be flipped by pushing with an electric push rod; or driven by a motor; or by any method known to those skilled in the art.

[0024] The multiple locking rods 7 can be flipped in various ways, such as by using a sliding ring that slides on the outer wall of the support ring 5 and multiple connecting rods that are hinged to the locking rods 7 respectively, and then using an electric push rod to push the sliding ring to simultaneously drive the multiple locking rods 7 to flip and drive the multiple support frames 1 to slide; or by using a sliding ring that rotates on the support ring 5, and using the support ring 5 to push the multiple locking rods 7 to flip and drive the multiple support frames 1 to slide; or any other method known to those skilled in the art.

[0025] The support frame 1, support ring 5, and locking rod 7 are modular and independently designed. If any component is damaged, it can be replaced individually, reducing maintenance costs. The through-slot 13 design ensures that the locking rod 7 is locked only at a certain angle, preventing accidental loosening.

[0026] In the above technical solution, the circular array of support frame 1 can slide radially along the support ring 5 independently or synchronously. Doctors can precisely adjust the expansion diameter of the support frame 1 of the anal dilator according to the patient's specific physiological structure to achieve personalized treatment and solve the problem of poor adaptability. At the same time, by using the angle of the locking rod 7 flipping in the groove 13, the size of the expansion of the support frame 1 can be indirectly locked by locking the angle of the locking rod 7 flipping. The independent structure of the support frame 1, the support ring 5 and the locking rod 7 facilitates subsequent replacement.

[0027] As a further embodiment of the present invention, an adjusting sleeve 6 is rotatably provided on the mounting thread 53 provided on the outer wall of the support ring 5, and the bottom end of the locking rod 7 is movably provided on the inner edge 62 provided on the adjusting sleeve 6.

[0028] Specifically, the top of the adjusting sleeve 6 has a movable cavity 61, and the inner edge 62 is located on the top of the inner wall of the movable cavity 61. The inner edge 62 and the adjusting sleeve 6 are an integral structure. The adjusting sleeve 6 is threadedly connected to the mounting thread 53 of the support ring 5. When the doctor rotates the adjusting sleeve 6, it will move axially along the support ring 5. The bottom end of the locking rod 7 is in movable contact with the inner edge 62 of the adjusting sleeve 6. When the adjusting sleeve 6 moves down, the inner edge 62 pushes the bottom end of the locking rod 7, causing the top end of the locking rod 7 to flip into the through groove 13, thereby driving the matching support frame 1 to slide outward. The inner edge 62 is annular and protrudes from the inner wall of the movable cavity 61. Therefore, when the adjusting sleeve 6 is adjusted by threaded rotation, the inner edge 62 can simultaneously drive multiple locking rods 7 to flip, thereby driving multiple support frames 1 to slide outward. The bottom end of the support ring 5 is provided with an integral gripper 54. The adjustment mechanism of the threaded rotation of the adjusting sleeve 6 allows for continuous fine adjustment of the expansion diameter, avoiding abrupt locking changes. The doctor can gradually adjust the expansion to suit sensitive tissues. The interaction between the inner edge 62 and the locking lever 7 ensures even distribution of locking force and reduces instrument wobbling.

[0029] As another embodiment of the present invention, the locking rod 7 is flipped to disengage from the slot 13.

[0030] Specifically, by flipping the locking rod 7 into and disengaging from the slot 13, the support frame 1 can be unlocked, allowing it to slide off the support ring 5 for maintenance or reinstallation. This facilitates the disassembly and replacement of the device.

[0031] As another embodiment of the present invention, when the adjusting sleeve 6 moves downward relative to the support ring 5, the top and bottom ends of the locking rod 7 sequentially disengage from the through groove 13 and the inner edge 62.

[0032] Specifically, when the doctor rotates the adjusting sleeve 6 to move it downwards, the inner edge 62 pushes the bottom of the locking rod 7, causing the top of the locking rod 7 to flip into the groove 13, thereby causing the matching support frame 1 to slide outwards to adjust the expansion. When the support frame 1 and adjusting sleeve 6 need to be disassembled separately for maintenance, the device is detached from the patient's body. Then, the doctor rotates the adjusting sleeve 6 to move it downwards, using the inner edge 62 to push the bottom of the locking rod 7, causing the top of the locking rod 7 to flip into the groove 13. The support frame 1 slides outwards to adjust the expansion. When the support frame 1 slides outwards to its maximum expansion position, the top of the locking rod 7 disengages from the groove 13, completing the disengagement and unlocking of the support frame 1. Then, when the adjusting sleeve 6 is moved downwards further, the bottom of the locking rod 7 disengages from the inner edge 62 of the adjusting sleeve 6, allowing the adjusting sleeve 6 and locking rod 7 to separate, so that the adjusting sleeve 6 can be removed from the support ring 5. This method facilitates the cleaning and disinfection of the components.

[0033] As another embodiment of the present invention, it includes a protective member 2 disposed in the gap 11 on the support frame 1, and an arc plate 22 disposed on the protective member 2. An airbag 3 is disposed on the top of the edge 12 located inside the support ring 5, and the airbag 3 is located on one side of the arc plate 22.

[0034] Specifically, the protective component 2 is embedded in the gap 11 of the support frame 1, such as... Figure 2 As shown, the integrated shield 21 on the protective component 2 is located on the side of the support frame 1 opposite to the airbag component 3. The arc-shaped plate 22 is designed to conform to the curved shape of the anal wall. The airbag component 3 is installed on the top of the side 12, located on one side of the arc-shaped plate 22; when the anal dilator is inserted, the airbag component 3 can be inflated by an external air source, and after expansion, it works together with the arc-shaped plate 22 to gently support the anal opening. The curvature of the arc-shaped plate 22 helps to distribute pressure, while the elasticity of the airbag component 3 can adapt to different anal shapes. Therefore, the airbag component 3 and the arc-shaped plate 22 can together form a shield to prevent the anal dilator from slipping during the operation.

[0035] As the preferred embodiment provided by the present invention, it includes a mounting plate 4, and the buckles 41 symmetrically arranged on the mounting plate 4 are movably disposed in the slots 24 opened on the outer walls of opposite sides of the protective member 2 to clamp the edge 12.

[0036] Specifically, the end of the buckle 41 is provided with a wedge-shaped cone 42. By placing the mounting plate 4 below the edge 12 and then pushing the mounting plate 4 upward, the buckle 41 slides along the opposite sides of the protective member 2. Subsequently, the wedge-shaped cone 42 engages in the slot 24 to clamp the edge 12, thereby fixing the protective member 2 to the edge 12. The elastic buckle 41 facilitates quick disassembly for replacement or cleaning of the protective member 2. The protective member 2 is made of rigid medical plastic. Therefore, the fixing process of the protective member 2 is simplified through the mounting plate 4 and the buckle 41 mechanism. The mounting plate 4 is symmetrically arranged on both sides of the protective member 2, and its buckle 41 can elastically engage in the slot 24 on the outer wall of the protective member 2 to form a clamping force and tightly fix the edge 12. This buckle 41 design allows for quick installation and disassembly. Doctors can pre-assemble the protective member 2 before surgery or replace it with a different size of protective member 2 as needed during surgery. The symmetrical layout of the buckle 41 ensures balanced force and avoids skewing.

[0037] As another embodiment of the present invention, the airbag component 3 is provided with a protective pad 32 that fits onto the arc-shaped plate 22.

[0038] Specifically, the protective pad 32 is fixedly installed on the airbag component 3. The protective pad 32 is made of soft silicone and fits tightly against the surface of the arc-shaped plate 22 to form a buffer layer. The protective pad 32 can directly contact the inner wall of the anus, reducing irritation from hard objects. At the same time, the protective pad 32 provides additional cushioning to reduce patient pain and is suitable for sensitive patients or those in the recovery period.

[0039] As another embodiment of the present invention, a clamping gap 23 is provided between the arc plate 22 and the protective member 2, and a protruding bladder portion 33 is provided on the airbag member 3, which communicates with the airbag member 3 and moves in the clamping gap 23.

[0040] Specifically, a clamping gap 23 is formed between the arc-shaped plate 22 and the protective member 2, and the protruding bladder portion 33 of the airbag member 3 extends into this gap; when the support frame 1 expands and squeezes the airbag member 3, the airflow forces the protruding bladder portion 33 to expand, and the expansion of the protruding bladder portion 33 will push the arc-shaped plate 22, thereby pushing the arc-shaped plate 22 towards the inner wall of the anus, thereby using the outward expansion of the arc-shaped plate 22 to increase the support space inside the anus and increase the doctor's operating space, and the outward expansion of the arc-shaped plate 22 can further enhance the anti-dislodgement force.

[0041] As another embodiment of the present invention, a cavity 31 is provided between the protruding bladder portion 33 and the airbag component 3, and the arc-shaped plate 22 is inserted into the cavity 31.

[0042] Specifically, the insertion cavity 31 is a channel-like structure on the airbag component 3, through which the arc-shaped plate 22 is inserted like a pin, facilitating the installation and removal of the airbag component 3. The plug-in design is more reliable than gluing or sewing and is easier to sterilize.

[0043] As a further preferred embodiment of the present invention, the airbag component 3 is a silicone airbag.

[0044] Specifically, silicone possesses excellent biocompatibility, elasticity, and chemical resistance, making it suitable for prolonged contact with human tissue. The airbag component 3 is made of medical-grade silicone, which expands evenly after inflation without causing allergies or irritation; its smooth surface makes it easy to clean and disinfect. The softness of silicone adapts to the flexibility of anal tissue, reducing pressure concentration points.

[0045] Working principle: The support ring 5 serves as an annular base, and the groove 51 on its outer wall allows multiple support frames 1 to slide independently or synchronously in a circular array along the radial direction. Doctors can manually adjust the position of each support frame 1 according to the physiological structure of the patient's anus, precisely controlling the expansion diameter for personalized treatment. When the adjusting sleeve 6 is rotated to move axially, its inner edge 62 pushes the bottom end of the locking rod 7, causing the top end of the locking rod 7 to push against the inner wall of the through groove 13, expanding the support frame 1 outwards for continuous fine-tuning. For maintenance, the locking rod 7 can be flipped to disengage from the through groove 13, or the adjusting sleeve 6 can be lowered to disengage the top and bottom ends of the locking rod 7 sequentially from the through groove 13 and inner edge 62, facilitating disassembly and replacement of components. The arc-shaped plate 22 is designed to conform to the curved shape of the anal wall, and the airbag 3 at the top of the edge 12 is located on one side of the arc-shaped plate 22. After the anal dilator is inserted, rotating the adjusting sleeve 6 causes the support frame 1 to expand. As the support frame 1 expands and compresses the airbag 3, the protruding bladder 33 inflates, pushing the arc-shaped plate 22 towards the inner wall of the anus, increasing support space and anti-dislodgement force. The airbag 3 and the arc-shaped plate 22 work together to gently support the anus, forming an anti-dislodgement barrier. The curvature of the arc-shaped plate 22 disperses pressure and reduces tissue damage, while the elasticity of the airbag 3 adapts to different anal shapes. The mounting plate 4 is movably engaged into the slot 24 of the protective component 2 via its symmetrically arranged buckles 41, clamping the edge 12, enabling quick fixing and disassembly of the protective component 2. The airbag 3 is provided with a protective pad 32, which fits against the arc-shaped plate 22, enhancing comfort and anti-dislodgement effect. The insertion cavity 31 between the protruding bladder 33 and the airbag 3 allows the arc-shaped plate 22 to be inserted, facilitating the replacement and cleaning of the airbag 3. Overall, this anal dilator achieves highly customizable dilation treatment through the sliding adjustment of the support frame 1, the locking mechanism of the locking rod 7, the fine-tuning of the adjusting sleeve 6, and the synergistic effect of the protective component 2 and the airbag component 3, solving the problem of poor adaptability of traditional anal dilators. The modular design makes components easy to replace and maintain, reducing long-term costs; the anti-dislodgement mechanism ensures surgical safety and improves patient comfort; and optimized materials extend the instrument's lifespan, making it suitable for various clinical scenarios.

[0046] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A medical anal dilator, characterized in that, It includes a support ring (5) and a support frame (1) that slides on it in the radial direction and is arranged in a circular array. The support frame (1) has two sides (12) that are close to each other and arranged in parallel. A locking rod (7) is hinged on the side plate (52) that is fixedly installed on the outer wall of the support ring (5). The top of the locking rod (7) is movably set in a through groove (13) opened on the adjacent side of the two sides (12).

2. The medical anal dilator according to claim 1, characterized in that, An adjusting sleeve (6) is rotatably mounted on the mounting thread (53) on the outer wall of the support ring (5), and the bottom end of the locking rod (7) is movably mounted on the inner edge (62) of the adjusting sleeve (6).

3. The medical anal dilator according to claim 2, characterized in that, The locking bar (7) flips over to disengage from the slot (13).

4. The medical anal dilator according to claim 2, characterized in that, When the adjusting sleeve (6) moves down relative to the support ring (5), the top and bottom ends of the locking rod (7) disengage from the through groove (13) and the inner edge (62) in sequence.

5. The medical anal dilator according to claim 1, characterized in that, It includes a protective member (2) disposed in the gap (11) on the support frame (1), and an arc plate (22) is disposed on the protective member (2). An airbag (3) is disposed on the top of the side (12) located inside the support ring (5), and the airbag (3) is located on one side of the arc plate (22).

6. The medical anal dilator according to claim 5, characterized in that, Includes mounting plate (4), and the buckles (41) symmetrically arranged on the mounting plate (4) are movably arranged in the slots (24) opened on the opposite outer walls of the protective member (2) to clamp the edge (12).

7. The medical anal dilator according to claim 5, characterized in that, The airbag component (3) is provided with a protective pad (32) that fits onto the arc plate (22).

8. The medical anal dilator according to claim 5, characterized in that, A clamping gap (23) is provided between the arc plate (22) and the protective member (2), and a protruding bladder portion (33) is provided on the airbag member (3) to communicate with the airbag member (3) and move in the clamping gap (23).

9. The medical anal dilator according to claim 8, characterized in that, A cavity (31) is provided between the protruding bladder portion (33) and the airbag component (3), and the arc-shaped plate (22) is inserted into the cavity (31).

10. The medical anal dilator according to claim 8, characterized in that, The airbag component (3) is a silicone airbag.

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