Pupil dilation system

Abstract

The utility model discloses a pupil dilation system which comprises a pupil dilator and an implanter, the pupil dilator is of an annular structure, the pupil dilator is delivered into an eye through the implanter, the circumferential end angle of the pupil dilator can capture iris tissue in the eye, an iris opening is expanded, then the pupil is dilated, and a better operation space is provided for an intraocular operation. The circumferential end corner of the pupil dilator is a clamping part with a clamping opening, the maximum vertical height of the clamping opening is 0.3-0.8 mm, and the height size of the clamping opening is larger, so that the pupil dilator can be separated from iris tissue more easily when taken out, and the taking-out difficulty of the pupil dilator is reduced.

Description

Technical Field

[0001] This application relates to the field of medical device technology, specifically to a pupil dilation system. Background Technology

[0002] During ophthalmic surgeries (such as phacoemulsification cataract surgery), it is sometimes necessary to enlarge the openings in the eyeball tissues, including the iris opening, to dilate the pupil and provide better operating space for the procedure, while reducing postoperative damage and complications. This is especially important for cataract surgery with small pupils. Currently, the main methods to address this issue are: incising the pupillary margin, using a lens repositioning hook and a nucleus splitter to dilate the pupil, placing an iris retractor, and using a pupillary dilator. Among these methods, using a pupillary dilator is considered one of the less invasive and more effective approaches.

[0003] Existing mainstream pupil dilation systems have a problem where the pupil dilator can easily trap the iris when removed from the eye after use by the doctor. In addition, the implanter of the pupil dilator is not convenient for reuse, as it is inconvenient for the doctor to put the pupil dilator into the loading part of the implanter when it is used again. Furthermore, the tooling for molding suture pupil dilators also needs further optimization. Utility Model Content

[0004] To address the aforementioned technical problems, this application provides a pupil dilation system, comprising: a pupil dilator formed by winding a wire into a closed annular structure; the pupil dilator includes:

[0005] Multiple clamping portions are located at the end corners of the annular structure; each clamping portion includes a top clamping arm, a middle connecting portion, and a bottom clamping arm in the vertical direction, and a clamping opening for clamping iris tissue is formed between the top clamping arm and the bottom clamping arm, the maximum vertical height of the clamping opening being 0.3~0.8mm; one end of the middle connecting portion is connected to the first end of the top clamping arm, and the other end of the middle connecting portion is connected to the first end of the bottom clamping arm;

[0006] A plurality of straight sections, each of which is connected to two adjacent clamping sections, one end of which is connected to the second end of the adjacent top clamping arm, and the other end of which is connected to the second end of the adjacent bottom clamping arm; an implanter, which includes a handle, a sheath, and a pusher assembly, one end of which is attached to the head of the handle and the other end of which extends away from the handle; the pusher assembly is capable of acting on the pupil dilator to guide the pupil dilator into the sheath or to push the pupil dilator out of the sheath.

[0007] In some embodiments of this application, the diameter of the wire is 0.1~0.2mm, the length of the straight section is 6~7mm, the top clamping arm and the bottom clamping arm are both arc-shaped structures, and their orthographic projection in the plane is a semi-circle shape with a diameter of 1~1.5mm.

[0008] In some embodiments of this application, the pupil dilator is generally square, and there are four clamping portions and four straight portions.

[0009] In some embodiments of this application, the intermediate connecting portion is S-shaped, and the middle part of the intermediate connecting portion is a vertical portion, which is perpendicular to the plane where the bottom clamping arm is located.

[0010] In some embodiments of this application, the intermediate connecting part is S-shaped, the middle part of the intermediate connecting part is an inclined part, and the inclined part has an angle α with the plane where the bottom clamping arm is located, 45°≤α<90°.

[0011] In some embodiments of this application, the intermediate connecting portion has a spiral disc-shaped structure, and the curvature of the intermediate connecting portion is adapted to the shape of the top clamping arm and the bottom clamping arm.

[0012] In some embodiments of this application, the pushing component includes a hook and a pushing body. The hook passes through the sheath, and the free end of the hook can hook the pupil dilator. The connecting end of the hook is connected to the pushing body. The pushing body is at least partially exposed in the handle to form a pushing button, which can guide the hook to move along the axial direction of the sheath.

[0013] In some embodiments of this application, the implanter further includes a loading box, which includes a box body and a lid that can close the box body; the pupil dilator can be pre-stored in the box body, and the head of the handle portion can be confined within the box body.

[0014] In some embodiments of this application, the box body has two pressing portions on both sides in the lateral direction, the inner side of the pressing portion has a first engaging portion, and the box cover has a second engaging portion on both sides in the lateral direction, the second engaging portion and the first engaging portion engagingly connected.

[0015] In some embodiments of this application, the box body is provided with a cavity for accommodating the pupil dilator.

[0016] In some embodiments of this application, the box lid has a first vent hole corresponding to the cargo cavity, the cross-sectional dimension of the first vent hole being smaller than the cross-sectional dimension of the cargo cavity; the bottom of the box body is also provided with a second vent hole communicating with the cargo cavity, the cross-sectional dimension of the second vent hole being smaller than the cross-sectional dimension of the cargo cavity.

[0017] In some embodiments of this application, the pupil dilation system further includes a forming fixture for shaping the wire to form the pupil dilator; wherein the forming fixture includes: a platform; a plurality of winding posts, the diameter of which is adapted to the clamping portion; the distribution position of the winding posts on the platform corresponds to the distribution position of the clamping portion on the annular structure, the platform has a distribution center, and the distance between each winding post and the distribution center is equal; and a forming portion disposed on the platform or the winding posts, such that the wire can be wound into the annular structure on the winding posts and the forming portion.

[0018] In some embodiments of this application, the winding post passes through the platform, the forming part includes a circumferential straight groove and a radial straight groove passing through the platform, and a circumferential straight groove is provided between the outer sides of two adjacent winding posts; a radial straight groove is provided on the inner side of each winding post, and the radial straight groove extends toward the distribution center.

[0019] In some embodiments of this application, the forming part includes a winding groove circumferentially disposed on the winding post, the shape of the winding groove being adapted to the shape of the clamping part.

[0020] In some embodiments of this application, the forming part includes a forming sheet disposed on the winding post, and the forming sheet is provided with a plurality of wire-passing grooves in the circumferential direction that are adapted to the shape of the clamping part.

[0021] The beneficial effects of this application are as follows: This utility model discloses a pupil dilation system, including a pupil dilator and an implanter. The pupil dilator has a ring-shaped structure and is delivered into the eye by means of the implanter. The circumferential end angle of the pupil dilator can capture the iris tissue in the eye, thereby enlarging the iris opening and thus dilating the pupil, providing better operating space for intraocular surgery. The circumferential end angle of the pupil dilator is a clamping part with a clamping opening. The maximum vertical height of the clamping opening is 0.3~0.8mm. The larger height of the clamping opening makes it easier for the pupil dilator to detach from the iris tissue during removal, reducing the difficulty of removing the pupil dilator. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0023] Figure 1A This is a perspective view of an embodiment of the pupil dilator in the pupil dilation system of this utility model;

[0024] Figure 1B This is a top view of an embodiment of the pupil dilator in the pupil dilation system of this utility model;

[0025] Figure 1C This is a side view of an embodiment of the pupil dilator in the pupil dilation system of this utility model;

[0026] Figure 2A This is a perspective view of another embodiment of the pupil dilator in the pupil dilation system of this utility model;

[0027] Figure 2B This is a side view of another embodiment of the pupil dilator in the pupil dilation system of this utility model;

[0028] Figure 3 This is a perspective view of another embodiment of the pupil dilator in the pupil dilation system of this utility model;

[0029] Figure 4A This is a perspective view of an embodiment of the implant in the pupil dilation system of this utility model;

[0030] Figure 4B This is an exploded view of an embodiment of the implant in the pupil dilation system of this utility model;

[0031] Figure 4C This is an exploded view of the handle portion of an embodiment of the implant in the pupil dilation system of this utility model;

[0032] Figure 5A This is a schematic diagram of wire forming according to an embodiment of the forming tooling in the pupil dilation system of this utility model;

[0033] Figure 5B This is a perspective view of an embodiment of the molding tooling in the pupil dilation system of this utility model in one direction;

[0034] Figure 5C This is a perspective view of an embodiment of the molding tooling in the pupil dilation system of this utility model from another direction;

[0035] Figure 5D This is a top view of an embodiment of the molding tooling in the pupil dilation system of this utility model;

[0036] Figure 6 This is a perspective view of another embodiment of the molding tooling in the pupil dilation system of this utility model;

[0037] Figure 7A This is a perspective view of another embodiment of the molding tooling in the pupil dilation system of this utility model;

[0038] Figure 7B yes Figure 7A A magnified view of a portion of region A in the middle. Detailed Implementation

[0039] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other alternative implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] like Figures 1A to 7B As shown, this application provides a pupil dilation system, which includes a pupil dilator 100 and an implanter 200. The pupil dilator 100 has a ring-shaped structure. After being implanted into the eye, the circumferential end angle of the pupil dilator 100 can capture the iris tissue in the eye, thereby widening the iris opening and dilating the pupil, providing better operating space for intraocular surgery. In this application, before being implanted into the eye, the pupil dilator 100 can deform and retract into the implanter 200 under the action of the implanter 200 to reduce the volume of the pupil dilator 100 and facilitate implantation into the eye. The pupil dilator 100 is delivered into the eye through the implanter 200, and after unfolding, it can clamp the iris tissue. After the surgery is completed, the pupil dilator 100 is retracted into the implanter 200 for easy removal from the eye. In this application, the circumferential end angle of the pupil dilator 100 is a clamping part 10 with a clamping opening 14. The maximum vertical height of the clamping opening 14 is 0.3~0.8mm. The larger height of the clamping opening 14 makes it easier for the pupil dilator 100 to detach from the iris tissue when it is removed, thus reducing the difficulty of removing the pupil dilator 100.

[0041] The following describes the various embodiments of the pupil dilator 100 and the implanter 200 in this application.

[0042] Example 1 of 100 pupil dilators

[0043] like Figures 1A to 1C As shown, Figure 1A This is a three-dimensional view of the pupil dilator 100. Figure 1B This is a top view of the pupil dilator 100. Figure 1C This is a side view of the pupil dilator 100.

[0044] In this embodiment, the pupil dilator 100 is formed by winding a wire into a closed ring structure. Specifically, the pupil dilator 100 includes multiple clamping portions 10 and multiple straight portions 20, with the clamping portions 10 located at the end corners of the ring structure. Adjacent clamping portions 10 are connected by straight portions 20. Each clamping portion 10 includes a top clamping arm 11, a middle connecting portion 12, and a bottom clamping arm 13 in the vertical direction. A clamping opening 14 for clamping iris tissue is formed between the top clamping arm 11 and the bottom clamping arm 13, with a maximum vertical height of 0.3~ The clamping opening 14, with a diameter of 0.8 mm, can clamp the iris tissue, thereby dilating the pupil. Simultaneously, due to the relatively large height of the clamping opening 14, it is easier to detach the pupil dilator 100 from the iris tissue after use, reducing the difficulty of removing the pupil dilator 100. One end of the intermediate connecting portion 12 is connected to the first end of the top clamping arm 11, and the other end of the intermediate connecting portion 12 is connected to the first end of the bottom clamping arm 13. One end of the straight portion 20 is connected to the second end of the adjacent top clamping arm 11, and the other end of the straight portion 20 is connected to the second end of the adjacent bottom clamping arm 13.

[0045] Furthermore, in this embodiment, the diameter of the wire is 0.1~0.2mm, and the material of the wire is PP (polypropylene, abbreviated as PP), PVDF (polyvinylidene fluoride, abbreviated as PVDF), nylon, nickel-titanium alloy, etc.

[0046] Furthermore, in the pupil dilator 100, the length of the straight portion 20 is 6-7 mm, and the orthographic projection of the straight portion 20 is a straight line; as shown... Figure 1C As shown, viewed from the side of the pupil dilator 100, the straight section 20 is shaped like a diagonal line. One end of the straight section 20 is connected to the top clamping arm 11 in a clamping section 10, and the other end of the straight section 20 is connected to the bottom clamping arm 13 in another clamping section 10. That is, one end of the straight section 20 is high and the other end is low.

[0047] like Figure 1A As shown, both the top clamping arm 11 and the bottom clamping arm 13 are arc-shaped structures; Figure 1B As shown, the orthographic projections of the top clamping arm 11 and the bottom clamping arm 13 in their respective planes are both semi-circular, with a diameter d1 of 1~1.5mm; Figure 1AAs shown, the middle connecting part 12 is S-shaped. The two ends of the middle connecting part 12 smoothly transition with the top clamping arm 11 and the bottom clamping arm 13. The middle part of the middle connecting part 12 is a vertical part 121, which is perpendicular to the plane P where the bottom clamping arm 13 is located. This further prevents the iris from being trapped by the clamping opening 14 after the pupil dilator 100 is used.

[0048] Furthermore, the pupil dilator 100 has a square overall shape, and the number of clamping portions 10 and straight portions 20 are both four. In some other embodiments, the number of clamping portions 10 and straight portions 20 are both three, and the pupil dilator 100 has a triangular overall shape.

[0049] Example 2 of 100 pupil dilators

[0050] As another embodiment of the pupil dilator 100, such as Figure 2A and Figure 2B As shown, Figure 2A A three-dimensional view of the pupil dilator 100. Figure 2B This is a side view of the pupil dilator 100; the top view of the pupil dilator 100 is the same as the top view of the first embodiment of the pupil dilator 100 described above. Please refer to [link / reference]. Figure 1B In this embodiment, the difference from the first embodiment of the pupil dilator 100 is that the shape of the middle connecting part 12 is S-shaped, but the middle part of the middle connecting part 12 is an inclined part 122. The inclined part 122 and the plane P where the bottom clamping arm 13 is located have an angle α, 45°≤α<90°. This further avoids the iris from being trapped by the clamping opening 14 after the pupil dilator 100 is used.

[0051] It should be noted that the other structures and parameters of the pupil dilator 100 in this embodiment are the same as those in the first embodiment of the pupil dilator 100 described above, and will not be repeated here.

[0052] Example 3 of Pupil Dilator 100

[0053] As another embodiment of the pupil dilator 100, such as Figure 3 As shown, Figure 3 This is a perspective view of the pupil dilator 100; the top view of the pupil dilator 100 is the same as the top view of the first embodiment of the pupil dilator 100 described above. Please refer to [link / reference]. Figure 1B In this embodiment, the difference from the first embodiment of the pupil dilator 100 is that the straight part 20 is an S-shaped part that smoothly transitions to the clamping part 10, and the projection of the straight part 20 is a straight line; the middle connecting part 12 has a spiral disc-shaped structure, and the curvature of the middle connecting part 12 is adapted to the shape of the top clamping arm 11 and the bottom clamping arm 13.

[0054] Implanter 200 Example 1

[0055] like Figures 4A to 4C As shown, Figure 4A A 3D view of the implant 200. Figure 4B An exploded view of implant 200. Figure 4C This is an exploded view of the handle portion 210. As an embodiment of the implanter 200, the implanter 200 can deliver the pupil dilator 100 shown in any of the above embodiments into the eye. Specifically, the implanter 200 includes a handle portion 210, a sheath 220, and a pusher component 230. One end of the sheath 220 is attached to the head of the handle portion 210, and the other end extends away from the handle portion 210. The pusher component 230 can act on the pupil dilator 100 to guide the pupil dilator 100 into the sheath 220 or push the pupil dilator 100 out of the sheath 220. The push assembly 230 includes a hook 231 and a pusher body 232. The hook 231 is inserted into the sheath 220. The free end of the hook 231 can hook the pupil dilator 100. The connecting end of the hook 231 is connected to the pusher body 232. The pusher body 232 is at least partially exposed in the handle portion 210 to form a push button 2321, which can guide the hook 231 to move along the axial direction of the sheath 220.

[0056] In this embodiment, before the pupil dilator 100 is implanted into the eye, the hook 231 of the implanter 200 hooks with the clamping part 10 of the pupil dilator 100. The operator drives the hook 231 to move along the axial direction of the sheath 220 by pushing the button 2321, so that the pupil dilator 100 is deformed from a square state into a slender structure stored in the sheath 220. After the sheath 220 of the implanter 200 enters the eye, the operator drives the hook 231 to push the pupil dilator 100 out of the sheath 220 by pushing the button 2321. The pupil dilator 100 is reshaped from a slender structure back into a square, thereby being able to clamp the iris tissue.

[0057] like Figure 4C As shown, the handle portion 210 includes a handle body 211 and a head end piece 212. The head end piece 212 is detachably connected to the handle body 211, for example, by snap-fit ​​or screw-fit. One end of the sheath tube 220 is fixed to the head end piece 212.

[0058] like Figure 4C As shown, the pusher 232 includes a push slider 2322 and a push button 2321. The push slider 2322 is slidably disposed in the cavity inside the handle 211 and can slide along the length direction of the handle 211. The connecting end of the hook 231 is fixedly connected to the push slider 2322. The push button 2321 is exposed outside the handle 211 and is fixedly connected to the push slider 2322, and can drive the hook 231 to move axially within the sheath 220 through the push slider 2322.

[0059] like Figure 4C As shown, in order to enhance the anti-slip effect of the handle 210 and make it easier for the operator to hold, an anti-slip part 2111 is also provided on the handle body 211. The anti-slip part 2111 can be a plurality of protrusions or grooves arranged along the length of the handle body 211, thereby increasing the surface friction of the handle body 211.

[0060] like Figure 4A and Figure 4B As shown, to facilitate the storage of the pupil dilator 100, the implanter 200 also includes a loading box 240, which includes a box body 241 and a box cover 242 that can close the box body 241. The pupil dilator 100 can be pre-stored in the box body 241, and the head of the handle 210 (i.e., the head end piece 212) can be confined within the box body 241. After the box cover 242 is opened, it is convenient to clean and sterilize (steam sterilize) the pupil dilator 100, the entire box body 241, the sheath 220, and the head end piece 212, which is beneficial for the secondary use of the pupil dilator 100.

[0061] like Figure 4B As shown, the box 241 has a carrying cavity 2413 for accommodating the pupil dilator 100. The shape of the carrying cavity 2413 is adapted to the structure of the pupil dilator 100. For example, when the overall shape of the pupil dilator 100 is square, the cross-sectional shape of the carrying cavity 2413 is square. The box 241 also has a longitudinal groove 2415 adapted to the sheath tube 220 and a limiting groove 2414 adapted to the head end piece 212. The sheath tube 220 can be installed in the longitudinal groove 2415, and the longitudinal groove 2415 communicates with the carrying cavity 2413 to facilitate the connection of the hook 231 to the pupil dilator 100 and its storage in the sheath tube 220. The head end piece 212 is limited in the limiting groove 2414 to prevent the handle part 210 from detaching from the loading box 240.

[0062] like Figure 4B As shown, in order to enhance the air permeability of the storage cavity 2413, the lid 242 has a first vent 2422 corresponding to the storage cavity 2413, through which air can enter the storage cavity 2413; the cross-sectional dimension of the first vent 2422 is smaller than the cross-sectional dimension of the storage cavity 2413, to prevent the pupil dilator 100 from detaching from the first vent 2422; the bottom of the box body 241 is also provided with a second vent 2416 connected to the storage cavity 2413, through which air can enter the storage cavity 2413, further enhancing the air permeability of the storage cavity 2413; the cross-sectional dimension of the second vent 2416 is smaller than the cross-sectional dimension of the storage cavity 2413, to prevent the pupil dilator 100 from detaching from the second vent 2416.

[0063] like Figure 4BAs shown, to facilitate opening the lid 242, the box body 241 has two pressing portions 2411 on both sides in the lateral direction, and the inner side of the pressing portions 2411 has a first engaging portion 2412; the lid 242 has a second engaging portion 2421 on both sides in the lateral direction, and the second engaging portion 2421 and the first engaging portion 2412 are engaged and connected; one of the second engaging portion 2421 and the first engaging portion 2412 is a locking block, and the other of the second engaging portion 2421 and the first engaging portion 2412 is a locking hole adapted to the locking block. When the operator opens the lid 242, pressing the pressing portions 2411 on both sides of the box body 241 can separate the lid 242 from the box body 241, reducing the difficulty of opening the lid 242.

[0064] Furthermore, the pupil dilation system in this application also includes a molding fixture 300 for shaping the wire to form the pupil dilator 100.

[0065] Example 1 of 300 molding tooling

[0066] like Figures 5A to 5D As shown, as one embodiment of the forming fixture 300, the forming fixture 300 is suitable for forming the wire of the pupil dilator 100 embodiment 1 described above. In this embodiment, the forming fixture 300 includes a platform 310, a plurality of winding posts 320 (320a, 320b, 320c, 320d) and a forming part. The number of winding posts 320 is the same as the number of clamping parts 10 in the pupil dilator 100, which is 4 in total. The diameter of the winding posts 320 is adapted to the clamping parts 10. The distribution position of the winding posts 320 on the platform 310 corresponds to the distribution position of the clamping parts 10 on the ring structure. The platform 310 has a distribution center O, and the distance between each winding post 320 and the distribution center O is equal. The forming part is provided on the platform 310 so that the wire L can be wound into a ring structure on the winding posts 320 and the forming part.

[0067] In this embodiment, the winding post 320 passes through the platform 310, which also has a starting point wire passage hole 311 and an ending point wire passage hole 312 to facilitate the passage of the head end (i.e., the starting end) of the wire L; the forming part includes a circumferential straight groove 330 and a radial straight groove 340 that penetrate the platform 310, and a circumferential straight groove 330 is provided between the outer sides of two adjacent winding posts 320; a radial straight groove 340 is provided on the inner side of each winding post 320, and the radial straight groove 340 extends toward the distribution center O.

[0068] Furthermore, in order to facilitate the cutting of the wire L after the pupil dilator 100 is formed, a working groove 313 is provided on the stage 310. The working groove 313 facilitates the fixing of the intersection X of the wire L and the cutting of excess wire L other than the structure of the pupil dilator 100.

[0069] Furthermore, to facilitate the removal of the pupil dilator 100 from the molding fixture 300 after shaping, the stage 310 is designed with several detachable parts, and the winding post 320 is designed to be detachably connected to the stage 310. For example... Figure 5D As shown, the platform 310 is divided into several detachably connected parts by diagonals L1 and L2. After the pupil dilator 100 is shaped, the platform 310 can be disassembled and the winding post 320 removed, allowing the pupil dilator 100 to be taken out. Preferably, the several parts of the platform 310 and the winding post 320 can be connected by plugging or magnetic attraction.

[0070] In this embodiment, the process of forming the wire L into the pupil dilator 100 is as follows:

[0071] Step 1: Refer to Figure 5A The head end of the wire L is introduced from the bottom of the platform 310 through the starting wire hole 311 to the top of the platform 310.

[0072] Step 2: Rotate the upper half of the winding post 320a counterclockwise by half a turn, and then introduce it to the bottom of the stage 310 through the radial straight groove 340;

[0073] Step 3: Refer to Figure 5C The winding post 320a is wound clockwise half a turn in the lower half and then introduced to the top of the stage 310 through the circumferential straight groove 330.

[0074] Step 4: Refer to Figure 5A Referring to steps one through three above, the winding is carried out on winding post 320b, winding post 320c and winding post 320d respectively;

[0075] Step 5: After the wire L is wound on the winding post 320d, the head end of the wire L is passed through the end point wire hole 312 from the bottom of the platform 310 and then fixed at the bottom of the platform 310.

[0076] Step 6: Secure the intersection X of wires L (e.g., by applying adhesive, welding, or soldering), and cut off any excess wires except for the pupil dilator 100 structure.

[0077] Step 7: Heat-set the pupil dilator at 100°C (if the material of wire L is PP polypropylene, the setting temperature is 100~150°C) to form a shape like... Figure 5B and Figure 5C The ring structure shown is used to finally remove the pupil dilator 100 from the loading fixture.

[0078] Example 2 of 300 molding tooling

[0079] like Figure 6As shown, as another embodiment of the forming fixture 300, the forming fixture 300 is suitable for forming the wire of the pupil dilator 100 embodiment three described above. In this embodiment, the forming fixture 300 includes a platform 310, a plurality of winding posts 320, and a forming part. The diameter of the winding posts 320 is adapted to the clamping part 10. The distribution position of the winding posts 320 on the platform 310 corresponds to the distribution position of the clamping part 10 on the annular structure. The platform 310 has a distribution center (the center of the platform 310), and the distance between each winding post 320 and the distribution center is equal. The forming part includes a winding groove 360 ​​arranged around the winding posts 320. The shape of the winding groove 360 ​​is adapted to the shape of the clamping part 10. This allows the wire L to be wound into an annular structure on the winding posts 320 and the forming part. The forming process is described in steps one to seven above and will not be repeated here.

[0080] Furthermore, to facilitate the handling of the wire, a working column 370 is provided on the platform 310, which has a starting wire passage hole 311 and an ending wire passage hole 312.

[0081] Furthermore, to facilitate the removal of the pupil dilator 100 from the molding fixture 300 after shaping, the winding post 320 is designed as having several detachable parts or is deformable, so that after the pupil dilator 100 is shaped, the winding post 320 can be disassembled or compressed to allow the pupil dilator 100 to be removed. Preferably, the several parts of the winding post 320 can be connected by plugging or magnetic attraction.

[0082] Example 3 of forming tooling 300

[0083] like Figures 7A to 7B As shown, as another embodiment of the forming fixture 300, this forming fixture 300 is also suitable for forming the wire of the pupil dilator 100 embodiment three described above. In this embodiment, the forming fixture 300 includes a platform 310, a plurality of winding posts 320, and a forming part. The diameter of the winding posts 320 is adapted to the clamping part 10. The distribution position of the winding posts 320 on the platform 310 corresponds to the distribution position of the clamping part 10 on the annular structure. The platform 310 has a distribution center (the center of the platform 310), and the distance between each winding post 320 and the distribution center is equal. The forming part includes a forming sheet 350 disposed on the winding posts 320. The forming sheet 350 is provided with a plurality of wire-passing grooves 351 along the circumferential direction that are adapted to the shape of the clamping part 10, specifically three grooves, so that the wire L can be wound into an annular structure on the winding posts 320 and the forming part. The forming process is described in steps one to seven above and will not be repeated here.

[0084] Furthermore, to facilitate the removal of the pupil dilator 100 from the molding fixture 300 after shaping, the molding sheet 350 is designed as several detachable parts. Preferably, the several parts of the molding sheet 350 can be connected by plugging or magnetic attraction.

[0085] Finally, it should be noted that if any directional indication (such as up, down, left, right, front, back, etc.) is involved in the embodiments of this application, the directional indication is only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0086] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0087] The above are merely embodiments of this application and do not limit the scope of this patent application. Any equivalent structural or procedural changes made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of this application.

Claims

1. A pupil dilation system, characterized in that, include: The pupil dilator is formed by winding a wire into a closed ring structure; The pupil dilator includes: Multiple clamping portions are located at the end corners of the annular structure; each clamping portion includes a top clamping arm, a middle connecting portion, and a bottom clamping arm in the vertical direction, and a clamping opening for clamping iris tissue is formed between the top clamping arm and the bottom clamping arm, the maximum vertical height of the clamping opening being 0.3~0.8mm; one end of the middle connecting portion is connected to the first end of the top clamping arm, and the other end of the middle connecting portion is connected to the first end of the bottom clamping arm; Multiple straight sections, each of which is connected to two adjacent clamping sections, one end of which is connected to the second end of the adjacent top clamping arm, and the other end of which is connected to the second end of the adjacent bottom clamping arm; An implanter includes a handle, a sheath, and a pusher assembly. One end of the sheath is attached to the head of the handle, and the other end extends away from the handle. The pusher assembly can act on the pupil dilator to guide the pupil dilator into the sheath or push the pupil dilator out of the sheath.

2. The pupil dilation system according to claim 1, characterized in that, The diameter of the wire is 0.1~0.2mm, the length of the straight section is 6~7mm, the top clamping arm and the bottom clamping arm are both arc-shaped structures, and their orthographic projection in the plane is a semi-circle shape with a diameter of 1~1.5mm. Preferably, the pupil dilator is square in shape, and there are four clamping parts and four straight parts.

3. The pupil dilation system according to claim 2, characterized in that, The intermediate connecting part is S-shaped, and the middle part of the intermediate connecting part is a vertical part, which is perpendicular to the plane where the bottom clamping arm is located.

4. The pupil dilation system according to claim 2, characterized in that, The intermediate connecting part is S-shaped, and the middle part of the intermediate connecting part is an inclined part. The inclined part and the plane where the bottom clamping arm is located have an angle α, 45°≤α<90°.

5. The pupil dilation system according to claim 2, characterized in that, The intermediate connecting part has a spiral disc-shaped structure, and the curvature of the intermediate connecting part is adapted to the shape of the top clamping arm and the bottom clamping arm.

6. The pupil dilation system according to any one of claims 1 to 5, characterized in that, The push assembly includes a hook and a pusher body. The hook is inserted into the sheath, and the free end of the hook can hook the pupil dilator. The connecting end of the hook is connected to the pusher body. The pusher body is at least partially exposed in the handle to form a push button, which can guide the hook to move along the axial direction of the sheath.

7. The pupil dilation system according to claim 6, characterized in that, The implant also includes a loading box, which includes a box body and a lid that can close the box body; the pupil dilator can be pre-stored in the box body, and the head of the handle can be confined within the box body.

8. The pupil dilation system according to claim 7, characterized in that, The box body has two pressing parts on both sides in the lateral direction, and the inner side of the pressing part has a first engaging part. The box lid has a second engaging part on both sides in the lateral direction, and the second engaging part and the first engaging part are engaged and connected. Preferably, the box body is provided with a cavity for accommodating the pupil dilator; Preferably, the lid has a first vent hole corresponding to the cargo cavity, and the cross-sectional dimension of the first vent hole is smaller than the cross-sectional dimension of the cargo cavity; the bottom of the box body is also provided with a second vent hole communicating with the cargo cavity, and the cross-sectional dimension of the second vent hole is smaller than the cross-sectional dimension of the cargo cavity.

9. The pupil dilation system according to claim 1, characterized in that, The pupil dilation system further includes a forming fixture for shaping the wire to form the pupil dilator; wherein the forming fixture includes: a stage; Multiple winding posts, the diameter of which is adapted to the clamping part; the distribution position of the winding posts on the platform corresponds to the distribution position of the clamping part on the annular structure, the platform has a distribution center, and the distance between each winding post and the distribution center is equal; A forming part is disposed on the carrier or the winding post, so that the wire can be wound into the loop structure on the winding post and the forming part.

10. The pupil dilation system according to claim 9, characterized in that, The winding post passes through the platform, and the forming part includes a circumferential straight groove and a radial straight groove that penetrate the platform. A circumferential straight groove is provided between the outer sides of two adjacent winding posts. A radial straight groove is provided on the inner side of each winding post, and the radial straight groove extends toward the distribution center. Alternatively, the forming part includes a winding groove circumferentially disposed on the winding post, the shape of the winding groove being adapted to the shape of the clamping part; Alternatively, the forming part may include a forming sheet disposed on the winding post, the forming sheet having a plurality of wire-passing grooves in the circumferential direction that are adapted to the shape of the clamping part.

Images