Adjustable rectal anastomosis dilator

Abstract

This invention belongs to the field of anal dilation technology and provides an adjustable anal dilation device for rectal anastomosis, comprising: a mounting column, a support plate assembly, a support assembly, and an adjustment mechanism. When anal dilation is required, the mounting plate is held and multiple sets of support plate assemblies are inserted into the patient's anus. At this time, the multiple sets of support plate assemblies dilate the patient's anus to achieve the purpose of anal dilation. When the dilation size needs to be increased, the rotating assembly is rotated. The rotation of the rotating assembly drives the multiple sets of support plate assemblies to expand away from the mounting column through multiple sets of adjustment components, thereby increasing the dilation size. The rotation of the rotating assembly also drives the multiple sets of support rods to move and compress the inner side of the multiple sets of support plate assemblies, thereby improving the roundness of the cylinder formed by the multiple sets of support plate assemblies. The expansion of the multiple sets of support plate assemblies increases the dilation size, making it easy to adjust the dilation size according to the patient's needs. There is no need to replace the anal dilator, making it convenient to use and improving patient comfort.

Description

Technical Field

[0001] This invention relates to the field of anal dilation technology, specifically to an adjustable anal dilation device for rectal anastomosis. Background Technology

[0002] Currently, some patients experience anastomotic stenosis after rectal anastomosis, which can lead to difficulty in defecation. Therefore, it is generally necessary to perform anal dilation exercises for a period of time after surgery to relax the contracted muscles and tendons and keep the anus in a well-open state.

[0003] In existing technologies, when performing anal dilation on patients, doctors mostly use their fingers to insert into the anus to stimulate it from all directions (up, down, left, and right). This can reduce anal contracture and promote bowel movements through finger stimulation. Alternatively, a tubular anal dilator can be inserted into the patient's anus and held for a certain period of time to dilate the anus. However, most existing anal dilators are of a fixed size. When performing anal dilation, doctors need to change to different sizes according to the patient's dilation needs, which is inconvenient. Furthermore, changing the dilator requires re-insertion of the dilator into the patient's anus, which can easily cause discomfort. Therefore, to address the above technical problems, an adjustable anal dilation device for rectal anastomosis is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes an adjustable anal dilator for rectal anastomosis, which allows for easy adjustment of the dilation size according to the patient's needs. It eliminates the need to change dilators of different sizes during dilation, making it convenient to use and improving patient comfort.

[0005] An adjustable rectal anastomosis dilator includes:

[0006] The mounting column has a mounting plate at one end;

[0007] The support plate assembly is slidably disposed on the mounting plate along the radial direction of the mounting column, and is located on the periphery of the mounting column, and multiple sets are arranged at intervals along the circumference of the mounting column.

[0008] The support assembly includes multiple sets of support rods, which are slidably disposed on the mounting plate along the mounting column and are respectively located inside the multiple sets of support plate assemblies;

[0009] The adjustment mechanism includes a rotating component and multiple sets of adjustment components. The rotating component is rotatably mounted on the mounting plate and connected to multiple sets of support rods. The multiple sets of adjustment components are mounted on the mounting column and are respectively connected to the rotating component and multiple sets of support plate assemblies. Rotating the rotating component can drive the multiple sets of support plate assemblies to expand away from the mounting column through the multiple sets of adjustment components. The rotation of the rotating component can also drive the multiple sets of support rods to move and compress the inner side of the multiple sets of support plate assemblies to improve the roundness of the cylinder formed by the multiple sets of support plate assemblies.

[0010] The above-mentioned adjustable rectal anastomosis dilation device has the following beneficial effects:

[0011] During anal dilation, multiple sets of support plate assemblies are inserted into the patient's anus by holding the installation plate. At this time, the multiple sets of support plate assemblies support the patient's anal wall, thereby achieving the purpose of anal dilation. When it is necessary to increase the size of the anal dilation, the rotating assembly is rotated. The rotation of the rotating assembly drives the multiple sets of support rods to move and abut against the inner side of the multiple sets of support plate assemblies, thereby improving the roundness of the cylinder formed by the multiple sets of support plate assemblies. The size of the anal dilation can be increased by the expansion of the multiple sets of support plate assemblies. It is convenient to adjust the size of the anal dilation according to the patient's needs, without the need to replace the anal dilator, making it convenient to use and improving the patient's comfort.

[0012] In one embodiment, the support plate assembly includes a support plate and an elastic plate. Multiple sets of first guide grooves are radially spaced along the mounting column on the mounting plate. A first guide block is fixedly disposed at one end of the support plate, and the first guide block is slidably engaged within the first guide groove. The elastic plate is disposed between two adjacent sets of support plates, with one side of the elastic plate connected to one set of support plates and the other side slidably inserted into the other set of support plates. By configuring the support plate and elastic plate to cooperate, when multiple sets of support plates are closed, the elastic plate is inserted within the support plate. When multiple sets of support plates expand, multiple sets of elastic plates slide out from within the support plates and fill the gaps between the multiple sets of support plates. Thus, the cooperation of the multiple sets of support plates and multiple sets of elastic plates forms a cylinder, thereby improving the roundness of the multiple sets of support plates after separation and enhancing the support effect on the patient's anal wall.

[0013] In one embodiment, the rotating assembly includes a rotating disk; the rotating disk is rotatably mounted on the mounting plate and connected to multiple sets of the adjusting assemblies.

[0014] In one embodiment, the adjusting assembly includes a bidirectional screw, two sets of threaded sleeves, and two sets of connecting rods. The bidirectional screw is rotatably disposed around the periphery of the mounting post along its length. The two sets of threaded sleeves are threadedly connected to both ends of the bidirectional screw. The two sets of connecting rods are located between the two sets of threaded sleeves and the support plate, respectively. Both ends of the connecting rods are hinged to the threaded sleeves and the support plate, respectively. One end of the bidirectional screw extends into the mounting disk and is equipped with a gear. An internal gear ring is provided on the rotating disk, and the gear meshes with the internal gear ring. By rotating the rotating disk, multiple sets of gears can drive multiple sets of bidirectional screws to rotate synchronously. The synchronous rotation of multiple sets of bidirectional screws can simultaneously adjust the expansion movement of multiple sets of support plates, making adjustment convenient. Furthermore, the threaded engagement between the bidirectional screw and the threaded sleeves can self-lock the threaded sleeves. Stopping the rotation of the rotating disk allows for positioning of the multiple sets of support plates, making support plate positioning convenient.

[0015] In one embodiment, the mounting plate has multiple sets of second guide grooves spaced radially along the mounting post. These second guide grooves are staggered with multiple sets of first guide grooves. One end of the support rod is fixedly equipped with a second guide block, which slidably engages within the second guide groove. The rotating plate has multiple sets of arc-shaped grooves spaced apart. A pivot is mounted on the second guide block, which slidably passes through the arc-shaped groove. The other end of the support rod can press against the inner side of the elastic plate. When the rotating plate rotates, it drives the multiple sets of arc-shaped grooves to rotate. The rotation of the arc-shaped grooves presses against the pivot. The pressure on the pivot causes the second guide block to move the support rod along the second guide groove away from the mounting post. This movement of the support rod presses against the inner side of the elastic plate, causing the elastic plate to deform elastically and improving the roundness of the cylinder formed by the elastic plate and the support plate.

[0016] In one embodiment, a limiting ring is further included. The limiting ring can be fitted onto multiple sets of support plates and is detachably connected to the mounting plate. The inner ring of the limiting ring can abut against the support plate when the support plate moves away from the expansion. By setting the limiting ring to limit the movement of the support plate away from the expansion, the maximum size of the support plate away from the expansion can be adjusted as needed, making the adjustment convenient and accurate.

[0017] In one embodiment, a protective sleeve is also included. The protective sleeve is cylindrical, with one end fitted onto the plurality of support plate assemblies and the other end provided with a conical guide. Both the protective sleeve and the conical guide are made of rubber. The protective sleeve prevents the support plate assemblies from scratching the patient's anal wall during insertion, and the conical guide facilitates insertion of the protective sleeve into the patient's anus.

[0018] In one embodiment, a first observation hole penetrating the mounting post is formed along the axial direction of the mounting post, and a second observation hole penetrating the conical guide head corresponding to the first observation hole is formed. The combination of the first and second observation holes facilitates observation of the rectal anastomosis site during anal dilation.

[0019] In one embodiment, the protective sleeve and the conical guide head have communicating fluid reservoirs for storing paraffin oil on their sidewalls, and the outer sidewalls of the protective sleeve and the conical guide head have multiple sets of outlet holes that communicate with the fluid reservoirs. When the protective sleeve is inserted into the patient's anus, the pressure from the patient's anus on the protective sleeve causes the paraffin oil in the fluid reservoir to overflow from the outlet holes, facilitating lubrication when the protective sleeve is inserted into the patient's anus.

[0020] In one embodiment, a sponge is provided inside the liquid storage chamber, and the sponge can absorb the paraffin oil. The sponge can absorb the paraffin oil, which facilitates the storage of the paraffin oil in the liquid storage chamber. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0022] Figure 1 This is a three-dimensional structural diagram of an adjustable rectal anastomosis dilation device according to an embodiment of the present invention;

[0023] Figure 2 for Figure 1 An exploded view of an adjustable rectal anastomosis dilator is shown.

[0024] Figure 3 for Figure 1 A three-dimensional structural diagram of the mounting column in an adjustable rectal anastomosis dilation device is shown.

[0025] Figure 4 for Figure 1 A three-dimensional structural diagram of the cooperation between the support plate assembly and the adjustment mechanism in an adjustable rectal anastomosis dilation device is shown.

[0026] Figure 5 for Figure 1 A three-dimensional structural diagram of the rotating component and the adjusting component cooperating in an adjustable rectal anastomosis dilation device is shown.

[0027] Figure 6 for Figure 1 A three-dimensional structural schematic diagram of the second state of an adjustable rectal anastomosis dilator;

[0028] Figure 7 for Figure 6 The image shows a right view of an adjustable rectal anastomosis dilator.

[0029] Figure 8 for Figure 6 A left view of an adjustable rectal anastomosis dilator shown;

[0030] Figure 9 for Figure 8 Enlarged view of region A in the middle;

[0031] Figure 10 for Figure 1 The diagram shows a three-dimensional structure of the protective sleeve after being cut open in an adjustable rectal anastomosis dilation device.

[0032] Figure label:

[0033] 10. Mounting post; 101. First observation hole; 11. Mounting plate; 112. First guide groove; 113. Second guide groove; 115. Fixing pin hole; 12. Protective sleeve; 121. Liquid outlet; 122. Liquid storage chamber; 123. Conical guide head; 124. Second observation hole; 14. Limiting ring; 15. Rotating assembly; 152. Rotating disk; 153. Arc-shaped groove; 154. Internal gear ring; 16. Adjusting assembly; 161. Threaded sleeve; 162. Bidirectional screw; 163. Connecting rod; 164. Gear; 17. Support plate; 171. Elastic plate; 172. First guide block; 18. Support rod; 181. Second guide block; 182. Shaft; 19. Knob; 20. Sponge. Detailed Implementation

[0034] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0035] Please see Figures 3 to 6 An adjustable rectal anastomosis dilation device according to one embodiment includes: a mounting column 10, a support plate assembly, a support assembly, and an adjustment mechanism.

[0036] Specifically, a mounting plate 11 is provided at one end of the mounting column 10. Support plate assemblies are slidably mounted on the mounting plate 11 along the radial direction of the mounting column 10, located around the periphery of the mounting column 10, and are arranged in multiple sets at intervals along the circumference of the mounting column 10. Support assemblies include multiple sets of support rods 18, which are slidably mounted on the mounting plate 11 along the radial direction of the mounting column 10 and are located inside the multiple sets of support plate assemblies. The adjustment mechanism includes a rotating assembly 15 and multiple sets of adjustment assemblies 16. The rotating assembly 15 is rotatably mounted on the mounting plate 11 and connected to the multiple sets of support rods 18. The multiple sets of adjustment assemblies 16 are mounted on the mounting column 10 and are connected to the rotating assembly 15 and the multiple sets of support plate assemblies, respectively. Rotating the rotating assembly 15 can drive the multiple sets of support plate assemblies to expand away from the mounting column 10 through the multiple sets of adjustment assemblies. The rotation of the rotating assembly 15 can drive the multiple sets of support rods 18 to move and compress the inner sides of the multiple sets of support plate assemblies to improve the roundness of the cylinder formed by the multiple sets of support plate assemblies.

[0037] When anal dilation is required, the multiple sets of support plate assemblies are inserted into the patient's anus by holding the installation plate 11. At this time, the multiple sets of support plate assemblies dilate the patient's anus to achieve the purpose of anal dilation. When it is necessary to increase the size of anal dilation, the rotating component 15 is rotated. The rotation of the rotating component 15 drives the multiple sets of support plate assemblies to expand away from the installation column 10 through the multiple sets of adjustment components 16. At this time, the size of anal dilation can be increased. The rotation of the rotating component 15 drives the multiple sets of support rods 18 to move and squeeze the inner side of the multiple sets of support plate assemblies, thereby improving the roundness of the cylinder formed by the multiple sets of support plate assemblies. The size of anal dilation can be increased by the expansion of the multiple sets of support plate assemblies. It is convenient to adjust the size of anal dilation according to the patient's needs, without the need to replace the anal dilator. It is convenient to use and improves the comfort of the patient.

[0038] Please see Figures 3 to 5 In one embodiment, the support plate assembly includes a support plate 17 and an elastic plate 171. Multiple sets of first guide grooves 112 are radially spaced along the mounting post 10 on the mounting plate 11. A first guide block 172 is fixedly disposed at one end of the support plate 17, and the first guide block 172 is slidably engaged within the first guide groove 112. The elastic plate 171 is disposed between two adjacent sets of support plates 17, with one side of the elastic plate 171 connected to one set of support plates 17, and the other side of the elastic plate 171 slidably passing through the other set of support plates 17.

[0039] In the above embodiment, when the multiple sets of support plates 17 expand apart away from the mounting column 10, the multiple sets of support plates 17 gradually separate. At this time, the multiple sets of elastic plates 171 extend from the support plates 17 to fill the gap between adjacent sets of support plates 17. Thus, the cooperation of the multiple sets of support plates 17 and the multiple sets of elastic plates 171 forms a cylinder, thereby improving the roundness of the multiple sets of support plates 17 as they expand apart, and ensuring the expansion effect of the multiple sets of support plates 17 on the patient's anus after expansion.

[0040] Please see Figures 2 to 6 In one embodiment, the rotating assembly 15 includes a rotating disk 152. The rotating disk 152 is rotatably mounted on the mounting disk 11 and is connected to multiple sets of adjusting assemblies 16.

[0041] Based on the above embodiments, the adjusting assembly 16 further includes a bidirectional screw 162, two sets of threaded sleeves 161, and two sets of connecting rods 163. The bidirectional screw 162 is rotatably disposed on the periphery of the mounting post 10 along the length direction of the mounting post 10. The two sets of threaded sleeves 161 are respectively threaded to both ends of the bidirectional screw 162. The two sets of connecting rods 163 are respectively located between the two sets of threaded sleeves 161 and the support plate 17. The two ends of the connecting rods 163 are respectively hinged to the threaded sleeves 161 and the support plate 17. One end of the bidirectional screw 162 extends into the mounting plate 11 and is provided with a gear 164. An internal gear ring 154 is provided on the rotating plate 152, and the gear 164 meshes with the internal gear ring 154.

[0042] In the above embodiment, by rotating the rotating disk 152, the rotating disk 152 drives the internal gear ring 154 to rotate. The rotation of the internal gear ring 154, in conjunction with multiple sets of gears 164, drives multiple sets of bidirectional screws 162 to rotate synchronously. The synchronous rotation of the multiple sets of bidirectional screws 162, in conjunction with the threaded engagement of the two sets of threaded sleeves 161 on the bidirectional screws 162, allows the two sets of threaded sleeves 161 to move away from each other. The relative movement of the two sets of threaded sleeves 161 can drive the support plate 17 away from the mounting column 10 through the two sets of connecting rods 163, thereby causing the multiple sets of support plates 17 to expand and increase the size of the patient's anus. This is easy to adjust, and the threaded engagement of the bidirectional screws 162 and the threaded sleeves 161 can position the support plate 17, thus facilitating the continuous expansion of the patient's anus after the support plate 17 expands.

[0043] In some embodiments, a knob 19 is connected to one set of gears 164, with one end of the knob 19 extending outside the mounting plate 11. By rotating the knob 19, the gear 164 is driven to rotate, and the rotation of the gear 164 engages with the internal gear ring 154, causing the internal gear ring 154 to rotate. The rotation of the internal gear ring 154 causes the remaining sets of gears 164 to rotate synchronously, thus rotating all gears 164 at the same time, which is convenient to use.

[0044] Please see Figure 3 , Figure 5 , Figure 8 , Figure 9In one embodiment, multiple sets of second guide grooves 113 are radially spaced along the mounting post 10 on the mounting plate 11. The multiple sets of second guide grooves 113 are staggered with multiple sets of first guide grooves 112. A second guide block 181 is fixedly provided at one end of the support rod 18. The second guide block 181 is slidably engaged in the second guide groove 113. Multiple sets of arc-shaped grooves 153 are spaced apart on the rotating plate 152. A pivot shaft 182 is provided on the second guide block 181. The pivot shaft 182 can slide through the arc-shaped groove 153. The other end of the support rod 18 can abut against the inner side of the elastic plate 171.

[0045] In the above embodiment, when the rotating disk 152 rotates, the rotating disk 152 drives multiple sets of bidirectional screws 162 to rotate synchronously, thereby causing multiple sets of support plates 17 to expand and multiple sets of elastic plates 171 to extend from the support plates 17 to fill the gap between adjacent sets of support plates 17. At the same time, the rotation of the rotating disk 152 causes the arc-shaped groove 153 to rotate. The rotation of the arc-shaped groove 153 compresses the dial shaft 182. After being compressed, the dial shaft 182 drives the second guide block 181 to move along the second guide groove 113. The movement of the second guide block 181 drives the support rod 18 to move and compress the inner side of the elastic plate 171, causing the elastic plate 171 to deform. This allows the curvature of the elastic plate 171 to match the curvature of the support plate 17 to form a cylinder, improving the roundness of the cylinder formed by the support plate 17 and the elastic plate 171.

[0046] Please see Figure 2 , Figure 8 , Figure 9 In one embodiment, a limiting ring 14 is also included. The limiting ring 14 can be sleeved on multiple sets of support plates 17 and is detachably connected to the mounting plate 11. The inner ring of the limiting ring 14 can abut against the support plate 17 when the support plate 17 expands away from it.

[0047] Based on the above embodiments, the limiting ring 14 is provided with multiple sets of fixing pins, and the mounting plate 11 is provided with multiple sets of fixing pin holes 115 corresponding to the multiple sets of fixing pins, so that the multiple sets of fixing pins can be locked in the multiple sets of fixing pin holes 115.

[0048] In the above embodiment, when the rotating disk 152 causes the multiple sets of support plates 17 to move away from the expansion movement and abut against the inner ring of the limiting ring 14, the multiple sets of support plates 17 cannot continue to move, and the rotating disk 152 cannot continue to rotate, thereby limiting the maximum size of the expansion of the multiple sets of support plates 17. Moreover, the limiting ring 14 and the mounting disk 11 are snap-fitted. By replacing the limiting ring 14 with a different inner ring size, the maximum size of the expansion of the support plate 17 can be adjusted according to the needs, which is convenient for adjustment according to the requirements.

[0049] Please see Figure 1 , Figure 2 , Figure 10In one embodiment, a protective sleeve 12 is also included. The protective sleeve 12 is cylindrical. One end of the protective sleeve 12 is fitted onto a plurality of support plate assemblies, and the other end of the protective sleeve 12 is provided with a conical guide head 123. Both the protective sleeve 12 and the conical guide head 123 are made of rubber.

[0050] In the above embodiments, by providing a protective sleeve 12, the multiple sets of support plate assemblies can be prevented from scratching the patient's anus when inserted into the patient's anus, the smoothness of the surface of the multiple sets of support plate assemblies can be improved, and by providing a conical guide head 123, it is easier for the protective sleeve 12 to be inserted into the patient's anus.

[0051] Please see Figure 1 , Figure 10 In one embodiment, a first observation hole 101 is provided on the mounting post 10 along the axial direction of the mounting post 10, and a second observation hole 124 is provided on the conical guide head 123 corresponding to the first observation hole 101, so that while expanding the anus, it is convenient to observe the condition of the patient's rectal anastomosis through the first observation hole 101 and the second observation hole 124.

[0052] Please see Figure 1 , Figure 10 In one embodiment, the protective sleeve 12 and the conical guide head 123 have a liquid storage cavity 122 that can store paraffin oil in the side wall, and the outer side wall of the protective sleeve 12 and the conical guide head 123 have a plurality of liquid outlet holes 121 that communicate with the liquid storage cavity 122 at intervals.

[0053] In the above embodiment, the paraffin oil can be stored by opening the liquid storage cavity 122. When the protective sleeve 12 is inserted into the patient's anus, the patient's anus will squeeze the protective sleeve 12. When the protective sleeve 12 is squeezed, the paraffin oil in the liquid storage cavity 122 overflows from the liquid outlet 121 and is applied between the protective sleeve 12 and the anal wall, thereby playing a lubricating role and making it easier for the protective sleeve 12 to be inserted into the patient's anus.

[0054] Please see Figure 10 In one embodiment, a sponge 20 is provided inside the liquid storage chamber 122, which can absorb paraffin oil. By absorbing the paraffin oil, the sponge 20 can better store the paraffin oil in the liquid storage chamber 122, preventing the paraffin oil from flowing out of the outlet hole 121 when the protective sleeve 12 is not squeezed.

[0055] The specific implementation method of the above-mentioned adjustable rectal anastomosis dilation device is as follows:

[0056] First, a limiting ring 14 with an appropriate inner ring size is selected according to the patient's need for anal dilation. Then, the limiting ring 14 is fitted onto multiple sets of support plates 17 and snapped into the mounting plate 11, thereby limiting the maximum size of the expansion of the multiple sets of support plates 17, and thus limiting the maximum size of anal dilation.

[0057] Then, by holding the installation plate 11, the protective sleeve 12 is inserted into the patient's anus. During the insertion of the protective sleeve 12, the anal wall will squeeze the protective sleeve 12. After being squeezed, the protective sleeve 12 will squeeze the sponge 20 in the liquid storage cavity 122. After being squeezed, the paraffin oil absorbed in the sponge 20 can overflow from the liquid outlet 121 and be applied between the surface of the protective sleeve 12 and the anal wall, thereby providing lubrication during the insertion of the protective sleeve 12 into the anus.

[0058] When the protective sleeve 12 is inserted into the patient's anus, the multiple sets of support plates 17 cooperate with the protective sleeve 12 to perform anal dilation on the patient. When it is necessary to increase the size of the anal dilation, the knob 19 is turned. The rotation of the knob 19 drives the connected gear 164 to rotate. The rotation of the gear 164 meshes with the internal gear ring 154, which in turn drives the other gears 164 to rotate synchronously, thereby making the multiple sets of gears 164 rotate synchronously.

[0059] Multiple sets of gears 164 rotate synchronously, driving multiple sets of bidirectional screws 162 to rotate synchronously. The synchronous rotation of the multiple sets of bidirectional screws 162 and the threaded engagement of the two sets of threaded sleeves 161 on the bidirectional screws 162 can cause the two sets of threaded sleeves 161 to move away from each other. The relative movement of the two sets of threaded sleeves 161 can drive the support plate 17 away from the mounting post 10 through the two sets of connecting rods 163. At this time, multiple sets of elastic plates 171 extend from the support plate 17 to fill the gap between two adjacent sets of support plates 17, so that the multiple sets of support plates 17 and multiple sets of elastic plates 171 cooperate to expand and increase the size of the patient's anus. When the support plate 17 expands and abuts against the inner ring of the limiting ring 14, the knob 19 cannot be rotated, thereby expanding the patient's anus to the required size.

[0060] Furthermore, the rotation of the rotating disk 152 causes the arc-shaped groove 153 to rotate, and the rotation of the arc-shaped groove 153 compresses the shaft 182. After being compressed, the shaft 182 drives the second guide block 181 to move along the second guide groove 113. The movement of the second guide block 181 drives the support rod 18 to move and compress the inner side of the elastic plate 171, causing the elastic plate 171 to deform. This allows the curvature of the elastic plate 171 to match the curvature of the support plate 17 to form a cylinder, improving the roundness of the cylinder formed by the support plate 17 and the elastic plate 171. This makes it easier to adjust the size of the anal dilator according to the patient's needs, eliminating the need to replace the anal dilator, making it convenient to use and improving the patient's comfort.

[0061] While dilating the anus, the device can also be used to observe the condition of the patient's rectal anastomosis through the first observation port 101 and the second observation port 124, thus improving the device's practicality.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. An adjustable rectal anastomosis dilation device, characterized in that, include: Mounting post (10), one end of which is provided with mounting plate (11); The support plate assembly is slidably disposed on the mounting plate (11) along the mounting post (10) and located on the periphery of the mounting post (10), and is provided in multiple sets at intervals along the circumference of the mounting post (10). The support assembly includes multiple sets of support rods (18), which are radially slidable on the mounting plate (11) and are respectively located inside the multiple sets of support plate assemblies; The adjustment mechanism includes a rotating component (15) and multiple sets of adjustment components (16). The rotating component (15) is rotatably mounted on the mounting plate (11) and connected to multiple sets of support rods (18). The multiple sets of adjustment components (16) are mounted on the mounting column (10) and are respectively connected to the rotating component (15) and multiple sets of support plate assemblies. Rotating the rotating component (15) can drive the multiple sets of support plate assemblies to expand away from the mounting column (10) through the multiple sets of adjustment components (16). The rotation of the rotating component (15) can drive the multiple sets of support rods (18) to move and squeeze the inner side of the multiple sets of support plate assemblies to improve the roundness of the cylinder formed by the multiple sets of support plate assemblies. The support plate assembly includes a support plate (17) and an elastic plate (171); multiple sets of first guide grooves (112) are radially spaced along the mounting post (10) on the mounting plate (11); a first guide block (172) is fixedly provided at one end of the support plate (17); the first guide block (172) is slidably engaged in the first guide groove (112); the elastic plate (171) is disposed between two adjacent sets of the support plates (17); one side of the elastic plate (171) is connected to one set of the support plates (17); the other side of the elastic plate (171) is slidably inserted into the other set of the support plates (17).

2. The adjustable rectal anastomosis dilator according to claim 1, characterized in that, The rotating assembly (15) includes a rotating disk (152); the rotating disk (152) is rotatably mounted on the mounting disk (11) and connected to multiple sets of the adjusting assemblies (16).

3. An adjustable rectal anastomosis dilator according to claim 2, characterized in that, The adjusting assembly (16) includes a bidirectional screw (162), two sets of threaded sleeves (161), and two sets of connecting rods (163). The bidirectional screw (162) is rotatably disposed on the periphery of the mounting post (10) along the length direction of the mounting post (10). The two sets of threaded sleeves (161) are threadedly connected to both ends of the bidirectional screw (162). The two sets of connecting rods (163) are located between the two sets of threaded sleeves (161) and the support plate (17). The two ends of the connecting rods (163) are hinged to the threaded sleeves (161) and the support plate (17), respectively. One end of the bidirectional screw (162) extends into the mounting disk (11) and is provided with a gear (164). An internal gear ring (154) is provided on the rotating disk (152), and the gear (164) meshes with the internal gear ring (154).

4. An adjustable rectal anastomosis dilation device according to claim 2, characterized in that, Multiple sets of second guide grooves (113) are radially spaced along the mounting post (10) on the mounting plate (11). The multiple sets of second guide grooves (113) are staggered with multiple sets of first guide grooves (112). A second guide block (181) is fixedly provided at one end of the support rod (18). The second guide block (181) is slidably locked in the second guide groove (113). Multiple sets of arc-shaped grooves (153) are spaced on the rotating disk (152). A dial shaft (182) is provided on the second guide block (181). The dial shaft (182) can slide through the arc-shaped groove (153). The other end of the support rod (18) can press the inner side of the elastic plate (171).

5. An adjustable rectal anastomosis dilation device according to claim 2, characterized in that, It also includes a limiting ring (14), which can be sleeved on multiple sets of the support plates (17) and is detachably connected to the mounting plate (11). The inner ring of the limiting ring (14) can abut against the support plate (17) when the support plate (17) expands away from the support plate.

6. An adjustable rectal anastomosis dilator according to claim 1, characterized in that, It also includes a protective sleeve (12), which is cylindrical. One end of the protective sleeve (12) is fitted onto multiple sets of the support plate assemblies, and the other end of the protective sleeve (12) is provided with a conical guide head (123). Both the protective sleeve (12) and the conical guide head (123) are made of rubber.

7. An adjustable rectal anastomosis dilation device according to claim 6, characterized in that, The mounting post (10) has a first observation hole (101) through the mounting post (10) along the axial direction of the mounting post (10), and the conical guide head (123) has a second observation hole (124) through the conical guide head (123) corresponding to the first observation hole (101).

8. An adjustable rectal anastomosis dilator according to claim 7, characterized in that, The protective sleeve (12) and the conical guide (123) have a liquid storage cavity (122) that can store paraffin oil in the side wall. The outer side wall of the protective sleeve (12) and the conical guide (123) has multiple sets of liquid outlet holes (121) that communicate with the liquid storage cavity (122).

9. An adjustable rectal anastomosis dilator according to claim 8, characterized in that, A sponge (20) is provided inside the liquid storage chamber (122), and the sponge (20) can absorb the paraffin oil.

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