Hydrophilic pre-loaded intraocular lens injector

Abstract

Provided is a hydrophilic pre-loaded intraocular lens injector, comprising an injector main body and an intraocular lens pre-loading device. The injector main body comprises a push cylinder, a push rod, and a push head. The push head is mounted at the front end of the push rod, and the push rod movably penetrates through the push cylinder and enables the push head to enter an implant device to inject an intraocular lens. The intraocular lens pre-loading device comprises an implant device and a crystalline lens box. An intraocular lens is pre-loaded into the implant device, and the intraocular lens is positioned and mounted in the implant device by means of a crystalline lens fixing block. The implant device is loaded into the crystalline lens box, and the push cylinder can be inserted into the crystalline lens box to be fixedly connected to the implant device, and can automatically detach the crystalline lens fixing block from the implant device. The intraocular lens of the present invention is pre-loaded in a sterile workshop of a factory, which can not only reduce the risk of contamination and infection, allowing patients to recover quickly, but also eliminate the tedious process of loading an intraocular lens by a doctor, thereby reducing the workload of the doctor.

Description

Hydrophilic pre-loaded intraocular lens injector Technical Field

[0001] This invention belongs to the field of intraocular lens injectors, and specifically relates to a hydrophilic pre-loaded intraocular lens injector. Background Technology

[0002] Intraocular lenses (IOLs) are currently the most effective method for correcting refractive errors in aphakic eyes. Existing hydrophilic pre-loaded IOL implantation systems require two hands from the operator. First, forceps are used to remove the IOL from its packaging and place it into the implantation device. Then, a folding device is used to fold the IOL, and finally, it is implanted into the eye through the implantation device. This process is complex and cumbersome, carries the risk of bacterial infection during use or storage, is inconvenient, and prone to various uncontrollable problems. For example, incorrect clamping angles or improper force control when holding the IOL with forceps can cause irreversible damage. Furthermore, the manual folding of the IOL before insertion makes it difficult to accurately determine the implantation angle or position, increasing the operator's risk of error and surgical complications.

[0003] CN215779107U discloses a pre-loaded intraocular lens (IOL) implantation system, comprising an implantation pusher, an implantation push rod that moves axially along the implantation pusher, and an IOL loading chamber detachably connected to the implantation pusher. The central axes of the implantation push rod, the implantation pusher, and the IOL loading chamber coincide with each other and are in the same direction as the diameter direction of the IOL loaded in the IOL loading chamber in an unfolded state. The implantation pusher includes a pusher body, a placement slot for the IOL loading chamber, and an implantation channel that are sequentially connected along the implantation direction. The front end of the implantation pusher has a U-shaped / Y-shaped clamping fork, the length of which is at least greater than or equal to the radius of the IOL. The diameter of the implantation channel, used for folding or rolling the IOL, decreases along the implantation direction, and its exit end is obliquely cut. The implantation pusher of this invention is pre-assembled with the pusher body of the implantation cartridge. The intraocular lens loading chamber is inserted into the placement slot of the implantation pusher, and the implantation pusher is advanced along the implantation direction. The implantation pusher passes through the pusher body and the placement slot in sequence before entering the intraocular lens loading chamber. The intraocular lens is held by the clamping fork at the front end. As the implantation pusher is advanced, the intraocular lens is pushed to the entrance of the implantation channel. As the inner wall of the implantation channel gradually narrows, it compresses the intraocular lens, causing it to curl further. The intraocular lens is fully curled when it reaches the exit of the implantation channel. Finally, the implantation pusher pushes the intraocular lens out of the implantation channel and into the eye, completing the implantation operation. However, this structure requires the clamping fork at the front end to hold the intraocular lens during injection, which can easily cause lens damage. Furthermore, regardless of whether hydrophobic or hydrophilic intraocular lenses are used, the loading chamber must be removed before installing the lens into the placement slot of the implantation pusher, which still poses a certain risk of infection. Summary of the Invention

[0004] In view of the problems mentioned in the background art above, the purpose of this invention is to provide a hydrophilic pre-loaded intraocular lens injector that is simple to operate, has a reasonable structure, avoids bacterial infection, and prevents misoperation.

[0005] The technical solution adopted in this invention is:

[0006] A hydrophilic pre-loaded intraocular lens (IOL) injector includes an injector body and an IOL pre-loading device. The injector body includes a plunger, a plunger rod, and a plunger head. The plunger head is installed at the front end of the plunger rod. The plunger rod is movably inserted into the plunger body and allows the plunger head to enter the implanter to inject the IOL. The IOL pre-loading device includes an implanter and a lens housing. The implanter contains a pre-loaded IOL. The IOL is positioned and installed in the implanter by a lens fixation block. The implanter is loaded in the lens housing. The plunger can be inserted into the lens housing and fixedly connected to the implanter, and can automatically detach the lens fixation block from the implanter.

[0007] Furthermore, the implanter includes a lens cavity for placing an artificial lens, the bottom of the cavity is an arc-shaped structure, the lens cavity is provided with a wing cover that can open and close the cavity, and the lens fixing block is detachably installed on the upper surface of the wing cover.

[0008] Furthermore, the lens fixation block is provided with two fixing posts for fixing the artificial lens. The fixing posts pass through the wing cover and enter the cavity to cooperate and fix the artificial lens. One or both fixing posts are deformable structures. The lens fixation block of the present invention is fastened to the wing cover by a deformable structure and can be detached from the wing cover with a little force.

[0009] Furthermore, the front end of the push tube includes an upper end face and a lower end face that are not connected to each other on the side. The lower end face has the same shape as the lower surface of the lens cavity of the implanter and can cover the lower surface of the lens cavity. The upper end face has a slot in the middle that passes through the front side. The upper end face can be inserted between the lens fixation block and the wing cover and can automatically detach the lens fixation block from the implanter.

[0010] Furthermore, the lower surface of the crystal fixation block facing the injector body and the upper surface of the front end of the injector are both inclined structures that work together to automatically detach the crystal fixation block from the implanter.

[0011] Furthermore, the wing cover is provided with limiting plates on both sides and the front side of the crystal fixing block. The limiting plates on both sides cooperate with the corresponding sides of the crystal fixing block to form a push-in channel. The upper end face of the front end of the push cylinder has symmetrically arranged guide plates that can be pushed forward along the push-in channel.

[0012] Furthermore, the upper end face of the front end of the pusher can be fastened and fixed to the upper surface of the wing cover, and the wing cover can be fastened and fixed to the lower part of the crystal cavity.

[0013] Furthermore, the front end of the lens cavity is provided with a head for injecting the artificial lens into the eye. The head has a port and is a flat structure. The cavity inside the head, from the lens cavity to the port, is a structure that narrows from wide to narrow. The upper edge of the cross-section of the cavity is a straight structure, and its lower edge is an arc-shaped structure. The cavity and the cavity body are smoothly connected.

[0014] Furthermore, the rear end of the push rod is provided with a push plate for pushing the push rod forward, and the two sides of the push rod are provided with cantilever arms. A one-way buckle protrudes from the cantilever arm and engages with the inner wall of the push cylinder to initially position the push rod.

[0015] Furthermore, the rear end of the push cylinder is provided with a push cylinder slot that engages with the initial positioning push rod in conjunction with a one-way buckle, and the rear end of the push cylinder is provided with a hand arm that engages with the push plate to push the push rod forward. The hand arm is longitudinally perpendicular to the push cylinder and protrudes from the upper and lower surfaces of the push cylinder.

[0016] Compared with the prior art, the significant advantages of this invention include: the crystal is pre-loaded in a sterile workshop in the factory, which not only reduces the risk of contamination and infection, and allows patients to recover quickly, but also saves doctors the tedious work of inserting the crystal, reducing their workload. At the same time, it also reduces the probability of the crystal being damaged and flowing into the patient's body when it is inserted into the device. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of the present invention.

[0018] Figure 2 is a schematic diagram of the structure of the present invention.

[0019] Figure 3 is a schematic diagram of the exploded structure of the present invention.

[0020] Figure 4 is a second schematic diagram of the exploded structure of the present invention.

[0021] Figure 5 is an exploded view of part of the structure of the present invention.

[0022] Figure 6 is a schematic diagram of the structure of the injector body of the present invention inserted into the implanter.

[0023] Figure 7 is a schematic diagram of the enlarged front end structure of the injector of the present invention.

[0024] Figure 8 is a schematic diagram of the implant and lens fixation structure of the present invention.

[0025] Figure 9 is a schematic diagram of the implant of the present invention.

[0026] In the diagram: 10-Injector body; 11-Push rod; 111-Push plate; 112-Cantilever; 113-One-way buckle; 12-Push cylinder; 121-Upper end face; 122-Lower end face; 123-Gutter; 124-Guide plate; 125-Clasp; 126-Push cylinder latch; 127-Handheld arm; 13-Push head; 20-Intraocular lens pre-loading device; 21-Lens fixing block; 211-Fixing post; 22-Implanter; 221-Lens cavity; 222-Cavity; 223-Wing cap; 224-Head; 225-Connecting through hole; 226-Limiting plate; 227-Triangular fastener; 228-Cavity; 229-Port; 23-Lens box. Detailed Implementation

[0027] The present invention will be further described below with reference to specific embodiments, but the invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all alternatives, improvements, and equivalents that may be included within the scope of the claims.

[0028] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," and "counterclockwise," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more, unless otherwise expressly defined.

[0029] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0030] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0031] Referring to Figures 1-9, this embodiment provides a hydrophilic pre-loaded intraocular lens injector, including an injector body 10 and an intraocular lens pre-loading device 20. The injector body 10 includes an injector cylinder 12, an injector rod 11, and an injector head 13. The injector head 13 is installed at the front end of the injector rod 11. The injector rod 11 is movably inserted into the injector cylinder 12 and allows the injector head 13 to enter the implanter 22 to inject the intraocular lens. The intraocular lens pre-loading device 20 includes an implanter 22 and a lens housing 23. The implanter 22 is pre-loaded with an intraocular lens. The intraocular lens is positioned and installed in the implanter 22 by a lens fixing block 21. The implanter 22 is loaded in the lens housing 23. The injector cylinder 12 can be inserted into the lens housing 23 and fixedly connected to the implanter 22, and can automatically detach the lens fixing block 21 from the implanter 22.

[0032] The implanter 22 described in this embodiment includes a lens cavity 221 for placing an artificial lens. The bottom of the cavity 222 within the lens cavity 221 has an arc-shaped structure. The front end of the lens cavity 221 is provided with a head 224 for inserting the artificial lens into the eye. The head 224 has a port 229 and is a flat structure. The cavity 228 within the head 224, extending from the lens cavity 221 to the port 229, has a narrowing structure. The upper edge of the cross-section of the cavity 228 is a straight structure, and its lower edge is an arc-shaped structure. The cavity 228 and the cavity 222 are smoothly connected. The lens cavity 221 is provided with a wing cover 223 that can open and close the cavity 222. One side of the wing cover 223 is hinged to the lens cavity 221, and the other side is fastened and fixed. The wing cover 223 has two connecting through holes 225 for fixing the crystal fixing block 21. The wing cover 223 has limiting plates 226 on both sides and the front side of the crystal fixing block 21. The limiting plates 226 on both sides cooperate with the corresponding sides of the crystal fixing block 21 to form a push-in channel. The wing plate 223 is fastened to the front end of the push cylinder 12. Specifically, the upper surface of the wing plate 223 has two protruding triangular fasteners 227, which can fasten to the front end of the push cylinder 12, thereby fixing the push cylinder 12 to the implanter 22.

[0033] In this embodiment, the lens fixation block 21 is detachably installed on the upper surface of the wing cover 223. The lens fixation block 21 has two fixing posts 211 for fixing the intraocular lens. The fixing posts 211 pass through the connecting through-hole 225 of the wing cover 223 and enter the cavity 222 to cooperate with and fix the intraocular lens. In this embodiment, one of the fixing posts 211 is a deformable structure; alternatively, both fixing posts 211 can be deformable structures. The deformable structure has a longitudinal slot on the fixing post 211 and a conical structure at the end for easy installation and removal. The lens fixation block 21 of this invention is fastened to the wing cover 223 by the deformable structure and can be easily detached from the wing cover 223 with slight force. The lower surface of the lens fixation block 21 facing the injector body 10 has an inclined structure that cooperates with the front end of the injector cylinder 12 to automatically detach the lens fixation block 21 from the implanter.

[0034] The front end of the push cylinder 12 in this embodiment includes an upper end face 121 and a lower end face 122 that are not connected to each other on the sides. The lower end face 122 has the same shape as the lower surface of the lens cavity 221 of the implanter 22 and can cover the lower surface of the lens cavity 221. The upper end face 121 has a slot 123 that passes through the front side in the middle. The upper end face 121 can be inserted between the lens fixing block 21 and the wing cover 223 and can automatically detach the lens fixing block 21 from the implanter 22. The front side of the upper end face 121 also cooperates with the inclined structure of the lens fixing block 21 to automatically detach the lens fixing block 21 from the inclined structure of the implanter 22. The upper end face 121 has symmetrically arranged guide plates 124 that can be pushed forward along the push channel to ensure the reliability of the insertion of the push cylinder 12. The upper end face 121 has a buckle 125 that cooperates with the triangular buckle 227 of the wing cover 223 for fixation. The rear end of the push cylinder 12 is provided with a push cylinder slot 126 that engages with the push rod 11 to initially position the push rod. The rear end of the push cylinder 12 is provided with a hand arm 127 that engages with the push plate 111 to push the push rod 11. The hand arm 127 is longitudinally perpendicular to the push cylinder 12 and protrudes from the upper and lower surfaces of the push cylinder 12.

[0035] In this embodiment, the push rod 11 has a push plate 111 at its rear end for pushing the push rod 11 forward. The push rod 11 has cantilever arms 112 on both sides, and a one-way buckle 113 protrudes from the cantilever arm 112 to engage with the inner wall of the push cylinder 12 to initially position the push rod. The hand contact surface of the push plate 111 has an anti-slip raised dot structure, or an anti-slip texture, etc.

[0036] In this embodiment, the push cylinder 12, push rod 11, push head 13, and implanter 22 are all flat structures. The push head 13 is made of silicone.

[0037] When storing and transporting intraocular lenses (IOLs), the IOL needs to be pre-loaded into the implanter 22. First, the lens fixation block 21 is installed on the wing cover 223, at which point the fixation post 211 protrudes from the inner surface of the wing cover 223. The wing cover 223 is then opened, and the two ends of the IOL are respectively fitted onto the two fixation posts 211. The wing cover 223 is then closed. After the implanter 22 and lens fixation block 21 are fixedly installed, they are inserted into the lens case 23 and sealed with saline solution. That is, the lens case 23 is in a sealed state during storage and transportation.

[0038] In use, first open the lens box 23, which has been sealed with aluminum foil and sterilized by moist heat. Hold the plunger 12 and insert the front end of the injector body 10 into the lens box 7, aligning it with the implanter 22 for assembly. When a "click" sound is heard, the front end of the plunger 12 is fixedly connected to the implanter 22 to form the injector. During assembly, the lens fixing block 21 will automatically detach from the implanter 22 under the action of the front end of the plunger 12, at which point the injector can be completely removed. Subsequently, ophthalmic viscoelastic agent can be injected through the injection port on the implanter 22 until the cavity is filled with ophthalmic viscoelastic agent. Insert the tip of the implanter 22 into the surgical incision and push the plunger 11 axially to implant the artificial lens into the eye.

[0039] The crystal of this invention is pre-loaded in a sterile workshop in the factory, which not only reduces the risk of contamination and infection, and allows patients to recover quickly, but also saves doctors the tedious work of inserting the crystal, reducing their workload. At the same time, it also reduces the probability of the crystal being damaged and flowing into the patient's body when it is inserted into the device.

Claims

1. A hydrophilic pre-loaded intraocular lens injector, comprising an injector body (10) and an intraocular lens pre-loading device (20), wherein the injector body (10) comprises an injector cylinder (12), an injector rod (11), and an injector head (13), wherein the injector head (13) is mounted on the front end of the injector rod (11), and the injector rod (11) is movably inserted into the injector cylinder (12) and enables the injector head (13) to enter the implanter (22) to inject the intraocular lens, characterized in that: The pre-installed intraocular lens device (20) includes an implanter (22) and a lens case (23). The implanter (22) is pre-installed with an intraocular lens. The intraocular lens is positioned and installed in the implanter (22) by a lens fixation block (21). The implanter (22) is loaded in the lens case (23). The pusher (12) can be inserted into the lens case (23) and fixedly connected to the implanter (22), and can automatically detach the lens fixation block (21) from the implanter (22).

2. The hydrophilic pre-loaded intraocular lens injector according to claim 1, characterized in that: The implanter (22) includes a lens cavity (221) for placing an artificial lens. The bottom of the cavity (222) inside the lens cavity (221) is an arc-shaped structure. The lens cavity (221) is provided with a wing cover (223) that can open and close the cavity (222). The lens fixing block (21) is detachably installed on the upper surface of the wing cover (223).

3. The hydrophilic pre-loaded intraocular lens injector according to claim 2, characterized in that: The lens fixing block (21) is provided with two fixing posts (211) for fixing the artificial lens. The fixing posts (211) pass through the wing cover (223) and enter the cavity (222) to cooperate with and fix the artificial lens. One or both fixing posts (211) are deformable structures.

4. The hydrophilic pre-loaded intraocular lens injector according to claim 1, characterized in that: The front end of the push tube (12) includes an upper end face (121) and a lower end face (122) that are not connected to the side. The lower end face (122) has the same shape as the lower surface of the lens cavity (221) of the implanter (22) and can cover the lower surface of the lens cavity (221). The upper end face (121) has a slot (123) that passes through the front side in the middle. The upper end face (121) can be inserted between the lens fixation block (21) and the wing cover (223) and can automatically detach the lens fixation block (21) from the implanter (22).

5. The hydrophilic pre-loaded intraocular lens injector according to claim 4, characterized in that: The lower surface of the crystal fixation block (21) facing the injector body (10) and the upper end surface (121) of the front end of the injector (12) are both inclined structures that can cooperate with each other to automatically detach the crystal fixation block (21) from the implanter (22).

6. The hydrophilic pre-loaded intraocular lens injector according to claim 2, characterized in that: The wing cover (223) is provided with limiting plates (226) on both sides and the front side of the crystal fixing block (21). The limiting plates (226) on both sides cooperate with the side of the corresponding crystal fixing block (21) to form a push-in channel. The upper end face (121) at the front end of the push cylinder (12) has symmetrically arranged guide plates (124) protruding. The guide plates (124) can be pushed forward along the push-in channel.

7. The hydrophilic pre-loaded intraocular lens injector according to claim 6, characterized in that: The upper end face (121) of the front end of the pusher (12) can be fastened and fixed to the upper surface of the wing cover (223) and the lower part of the crystal cavity (221).

8. The hydrophilic pre-loaded intraocular lens injector according to claim 2, characterized in that: The front end of the lens cavity (221) is provided with a head (224) for injecting an artificial lens into the eye. The head (224) has a port (229). The head (224) has a flat structure. The cavity (228) inside the head (224) from the lens cavity (221) to the port (229) has a structure that narrows from wide to narrow. The upper edge of the cross-section of the cavity (228) is a straight structure, and its lower edge is an arc-shaped structure. The cavity (228) and the cavity body (222) are smoothly connected.

9. The hydrophilic pre-loaded intraocular lens injector according to claim 1, characterized in that: The rear end of the push rod (11) is provided with a push plate (111) for pushing the push rod (11) forward. The two sides of the push rod (11) are provided with cantilever (112). The cantilever (112) is provided with a one-way buckle (113) that cooperates with the inner wall of the push cylinder (12) to engage the initial positioning push rod (11).

10. The hydrophilic pre-loaded intraocular lens injector according to claim 19, characterized in that: The rear end of the push cylinder (12) is provided with a push cylinder slot (126) that engages with the one-way buckle (113) to engage with the initial positioning push rod (11). The rear end of the push cylinder (12) is provided with a hand arm (127) that engages with the push plate (111) to push the push rod (11). The hand arm (127) is longitudinally perpendicular to the push cylinder (12) and protrudes from the upper and lower surfaces of the push cylinder (12).

Images