An intraocular lens implant system

Abstract

This invention discloses an intraocular intraocular lens implantation system, comprising a metal implanter, a flat-plate delivery head, and an intraocular lens. The flat-plate delivery head gradually narrows from back to front to form a smooth inner cavity, in which the intraocular lens is placed in an inverted S-shape. The metal implanter works in conjunction with the intraocular lens, folding it within the inner cavity. The metal implanter consists of a main body, a push rod, a rotating handle, a decorative cap, a snap-lock switch, a snap ring, a delivery head locking element, and two set screws. The front end of the main body passes through the delivery head locking element and connects to the flat-plate delivery head, while the rear end of the main body is threadedly connected to the rotating handle. A decorative cap is installed at the rear end of the rotating handle. This invention features a simple structure, low cost, ingenious design, and convenient assembly and disassembly. It eliminates the need for pre-folding the intraocular lens, simplifies the loading of the intraocular lens, and effectively prevents intraocular lens fragments from falling out, thus avoiding the injection of fragments into the eye and causing intraocular inflammation. It has broad application prospects and is conducive to widespread application.

Description

Technical Field

[0001] This invention relates to the field of intraocular lens technology, and more particularly to an intraocular intraocular lens implantation system. Background Technology

[0002] An intraocular lens (IOL) implantation system is a specialized surgical instrument used to implant foldable, soft intraocular lenses (IOLs) into the human eye. It allows for implantation through a small incision of less than 3 millimeters. IOL implantation surgery has undergone significant changes with the development of lens material technology. Currently, the mainstream IOL is the foldable IOL, and the primary implantation method is implantation via an implanter. This involves using an implanter to fold and compress the foldable IOL before implanting it into the patient's eye. This method has the advantage of a small surgical incision. The core of this implanter is its guide tip, whose internal channel functions to fold, deform, and deliver the lens. However, this method has certain potential risks of failure and significant shortcomings in actual clinical application. The foldable IOL guide tip requires the IOL to be pre-loaded into the folding cavity before the folding loop is folded. During the folding process, the lens is easily damaged, leading to implantation failure. Furthermore, debris can easily fall from the guide tip during folding, which can directly enter the guide tip cavity during the installation process. During the subsequent implantation of the intraocular lens into the eye, debris can be injected into the eye along with the lens, potentially causing intraocular inflammation. Therefore, there is an urgent need to develop an intraocular lens implantation system to address these technical problems.

[0003] In view of this, the present invention is hereby proposed. Summary of the Invention

[0004] The purpose of this invention is to provide an intraocular intraocular lens implantation system that is simple in structure, low in cost, ingeniously designed, and easy to assemble and disassemble. It does not require pre-folding of the intraocular lens, and the operation of loading the intraocular lens is simple. It can also effectively prevent the intraocular lens from falling out and avoid the debris being pushed into the eye and causing intraocular inflammation. It has broad application prospects and is conducive to its widespread application.

[0005] To achieve the above objectives, the present invention provides an intraocular intraocular lens implantation system, comprising a metal implanter, a flat-plate guide head, and an intraocular lens. The flat-plate guide head has a smooth inner cavity that gradually narrows from back to front. The intraocular lens is placed in the inner cavity in an inverted S-shape. The metal implanter works in conjunction with the intraocular lens to fold the intraocular lens within the inner cavity. The metal implanter consists of a main body, an injection rod, a rotating handle, a decorative cap, a locking switch, a retaining spring, a guide head locking element, and two set screws. The front end of the main body passes through the guide head locking element and connects to the flat-plate guide head. The rear end of the main body... The rotary handle is threadedly connected to the main body, and a decorative cap is installed at the tail end of the rotary handle. The injection rod passes through the main body. The front part of the main body is provided with a rear limiting platform, an anti-rotation platform, a stop switch slot, a start switch slot, a left motion support surface, a right motion support surface, a left rear slot, a right rear slot, a left lower stop surface of the inlet head, a right lower stop surface of the inlet head, a positioning structure, and a set screw hole. The flat inlet head consists of an inlet head front end and an inlet head rear end. The rear end of the inlet head is provided with a left front buckle, a right front buckle, a left upper stop surface of the inlet head locking component, a right upper stop surface of the inlet head locking component, a left rear buckle, a right rear buckle, a left lower stop surface of the main body, and a right lower stop surface of the main body. The right-hand operating section includes an inlet head locking component with an anti-slip handle, an inlet head stop surface on the left and right, a front slot on the left and right, a positioning rib, an anti-rotation groove, a rear limit surface, and a front limit surface. Symmetrical switch mounting slots are provided on both the upper and lower sides of these slots. A latching lock switch is installed within each slot. The latching lock switch consists of a button, a locking mechanism, and a latch structure. The switch mounting slot engages with the latch structure. Pressing the button activates the locking mechanism, causing the latch structure to pop out and retract, thus locking and unlocking. The inlet head locking component and the latching lock switch form an assembly mounted on the main body. The anti-rotation platform and anti-rotation... The groove connection prevents the guide head locking component from rotating. The left and right moving support surfaces mate with the left and right stop surfaces on the guide head, allowing the guide head locking component to move back and forth on the main body. The second set screw is installed in the set screw hole. When the guide head locking component moves forward, the start switch slot engages with the buckle structure to prevent the guide head locking component from falling off from the front end, ensuring accuracy before assembly. When the guide head locking component moves backward, the rear limit platform engages with the rear limit surface to restrict the guide head locking component from falling off from the rear end. The stop switch slot engages with the buckle structure to lock the guide head locking component, thus fixing the flat guide head.

[0006] Preferably, the injection rod has an injection head at its front end and a rotating shaft at its rear end. The end of the rotating shaft has a retaining ring groove, and the retaining ring is installed in the retaining ring groove. The middle part of the injection rod has an anti-rotation stop part to prevent rotation and guide the injection rod to move back and forth. The front part of the anti-rotation stop part has a rearward limit to prevent the injection rod from being pulled out of the main body. The rear part of the anti-rotation stop part has a set screw groove, and the set screw is installed in the set screw groove. The inside of the rotating handle has an injection rod rotating groove that cooperates with the rotating shaft. The front of the injection rod rotating groove has an injection rod moving hole.

[0007] Preferably, the left front slot, the right front slot, the left rear slot, and the right rear slot are not on the same plane, and correspondingly, the left front latch, the right front latch, the left rear latch, and the right rear latch of the flat plate inlet head are also not on the same plane, to prevent the flat plate inlet head from being installed backwards.

[0008] Preferably, when the rear buckle left and rear buckle right are engaged with the rear slot left and rear slot right, they are not in the same space as the rear inlet of the inlet head, to prevent detached debris from entering the inner cavity of the flat inlet head.

[0009] Preferably, the positioning structure is inserted into the positioning rib, and the inlet head locking component is positioned and fixed to ensure that the flat inlet head is firmly loaded.

[0010] Preferably, the tail end of the rotating handle is provided with a decorative internal thread, and the outer side of the decorative cap is provided with a decorative external thread. The decorative internal thread and the decorative external thread are engaged and connected by rotating the screwdriver slot with a screwdriver.

[0011] Preferably, the decorative cap has a rotating cavity on its inner side, and the injection rod can rotate freely within the rotating cavity.

[0012] Preferably, the rotating handle has an external thread on its exterior and the body has an internal thread at its tail end. The internal thread engages with the external thread, and rotating the rotating handle drives the injection rod to move back and forth.

[0013] The present invention provides an intraocular intraocular lens implantation system, which has the following beneficial effects.

[0014] 1. This invention has a simple structure, low cost, ingenious design, and convenient assembly and disassembly. It does not require pre-folding of the intraocular lens, and the operation of loading the intraocular lens is simple. It can also effectively prevent the intraocular lens from falling out of the eye and avoid the fragments being pushed into the eye and causing intraocular inflammation. It has broad application prospects and is conducive to its widespread application.

[0015] 2. The implanter of the present invention is made of metal and is reusable. Compared with disposable plastic injectors, it is cheaper and can significantly reduce the cost of use. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an intraocular intraocular lens implantation system provided by the present invention;

[0017] Figure 2 A cross-sectional view of an intraocular intraocular lens implantation system provided by the present invention;

[0018] Figure 3 An exploded view of an intraocular intraocular lens implantation system provided by the present invention;

[0019] Figure 4 This is a schematic diagram of the main structure of an intraocular intraocular lens implantation system provided by the present invention;

[0020] Figure 5 A schematic diagram of the injection rod structure of an intraocular intraocular lens implantation system provided by the present invention;

[0021] Figure 6 A schematic diagram of the rotating handle structure of an intraocular intraocular lens implantation system provided by the present invention;

[0022] Figure 7 This is a schematic diagram of the decorative cap structure of an intraocular intraocular lens implantation system provided by the present invention;

[0023] Figure 8 This invention provides a schematic diagram of the latching and locking switch structure of an intraocular intraocular lens implantation system.

[0024] Figure 9 A schematic diagram of a flat-plate implantation head structure for an intraocular intraocular lens implantation system provided by the present invention;

[0025] Figure 10 This invention provides a schematic diagram of the insertion head locking mechanism of an intraocular intraocular lens implantation system.

[0026] Figure 11 This is a schematic diagram of the assembly structure of a flat-plate implantation head for an intraocular intraocular lens implantation system provided by the present invention.

[0027] In the picture:

[0028] 1. Main body 101. Rear limit stage 102. Anti-rotation stage 103. Stop switch slot 104. Start switch slot 105a. Left motion support surface 105b. Right motion support surface 106a. Left rear slot 106b. Right rear slot 107a. Left lower stop surface of inlet head 107b. Right lower stop surface of inlet head 108. Positioning structure 109. Set screw hole 2. Push rod 201. Anti-rotation stop part 202. Rear movement limit 203. Set screw groove 204. Rotating shaft 205. Snap ring groove 206. Push head 3. Rotating handle 301. Push rod rotating groove 302. External thread 303. Push rod moving hole 304. Decorative internal thread 4. Decorative cap 401. Decorative external thread 402. Rotating cavity 403. Screwdriver slot 5. Snap locking switch 501. Button 502. Locking 503. Mechanism 6. Snap-fit ​​structure 7. Snap ring 7. Flat-plate inlet head 701. Inlet head front end 702. Inlet head rear end 703a. Front snap left 703b. Front snap right 704a. Inlet head locking upper stop surface left 704b. Inlet head locking upper stop surface right 705a. Rear snap left 705b. Rear snap right 706a. Main body lower stop surface left 706b. Main body lower stop surface right 707. Manual operating part 8. Intraocular lens 9. Inlet head locking component 901. Anti-slip handle 902a. Inlet head upper stop surface left 902b. Inlet head upper stop surface right 903a. Front slot left 903b. Front slot right 904. Positioning rib 905. Anti-rotation groove 906. Switch mounting groove 907. Rear limit surface 908. Front limit surface 10. Set screw one 11. Set screw two. Detailed Implementation

[0029] The present invention will be further described below with reference to specific embodiments and accompanying drawings to help understand the content of the present invention.

[0030] like Figure 1-3 The figures shown are a schematic diagram, a cross-sectional view, and an exploded view of an intraocular intraocular lens implantation system provided by the present invention. Figure 4-10The figures shown are schematic diagrams of the main body, injection rod, rotating handle, decorative cap, snap-locking switch, flat-plate inlet head, and inlet head locking component of an intraocular intraocular lens implantation system provided by the present invention. The intraocular intraocular lens implantation system includes a metal implanter, a flat-plate inlet head 7, and an intraocular lens 8. The flat-plate inlet head 7 gradually narrows from back to front to form a smooth inner cavity. The intraocular lens 8 is placed in the inner cavity in an inverted S-shape. The metal implanter works in conjunction with the intraocular lens 8 to fold the intraocular lens 8 within the inner cavity. The metal implanter consists of a main body 1, an injection rod 2, a rotating handle 3, a decorative cap 4, a snap-locking switch 5, a retaining spring 6, an inlet head locking component 9, a first setter screw 10, and a second setter screw 11. The front end of the main body 1 passes through the inlet head locking component 9 and connects to the flat-plate inlet head 7. The rear end of the main body 1 is threadedly connected to the rotating handle 3. A decorative cap 4 is installed. The injection rod 2 passes through the main body 1. The front part of the main body 1 is provided with a rear limiting platform 101, an anti-rotation platform 102, a stop switch slot 103, a start switch slot 104, a left motion support surface 105a, a right motion support surface 105b, a left rear slot 106a, a right rear slot 106b, a left lower stop surface 107a, a right lower stop surface 107b, a positioning structure 108, and a set screw hole 109. The flat-type injection head 7 is composed of an injection head front end 701 and an injection head rear end 702. The injection head rear end 702 is provided with a left front buckle 703a, a right front buckle 703b, a left upper stop surface 704a, and a right upper stop surface 704a. 04b, rear buckle left 705a, rear buckle right 705b, main body lower stop surface left 706a, main body lower stop surface right 706b and hand operation part 707, the guide head locking part 9 is provided with anti-slip handle 901, guide head upper stop surface left 902a, guide head upper stop surface right 902b, front slot left 903a, front slot right 903b, positioning rib 904, anti-rotation groove 905, rear limit surface 907 and front limit surface 908, and symmetrically provided with switch mounting slots 906 on its upper and lower sides. The switch mounting slot 906 is equipped with a buckle locking switch 5. The buckle locking switch 5 is composed of button 501, locking mechanism 502 and buckle structure 503. The switch mounting slot 906 and The snap-fit ​​structure 503 engages, and pressing the button 501 activates the locking mechanism 502, causing the snap-fit ​​structure 503 to pop out and retract, thus locking and unlocking. The guide head locking component 9 and the snap-fit ​​locking switch 5 form an assembly installed on the main body 1. The anti-rotation platform 102 is connected to the anti-rotation groove 905 to prevent the guide head locking component 9 from rotating. The left and right motion support surfaces 105a and 105b cooperate with the left and right stop surfaces 902a and 902b on the guide head, allowing the guide head locking component 9 to move back and forth on the main body 1. The second set screw 11 is installed in the set screw hole 109. When the guide head locking component 9 moves forward, the start switch slot 104 engages with the snap-fit ​​structure 503.To prevent the guide head locking component 9 from falling off from the front end and ensure accuracy before assembly, when the guide head locking component 9 moves backward, the rear limiting platform 101 cooperates with the rear limiting surface 907 to prevent the guide head locking component 9 from falling off from the rear end. The stop switch slot 103 cooperates with the buckle structure 503 to lock the guide head locking component 9, thus fixing the flat guide head 7.

[0031] The front end of the injection rod 2 is provided with an injection head 206, and the rear end is provided with a rotating shaft 204. The end of the rotating shaft 204 is provided with a retaining spring groove 205, and the retaining spring 6 is installed in the retaining spring groove 205. The middle part of the injection rod 2 is provided with an anti-rotation stop part 201 to prevent rotation and guide the injection rod 2 to move back and forth. The front part of the anti-rotation stop part 201 is provided with a rearward limit 202 to prevent the injection rod 2 from being pulled out of the main body 1. The rear end of the anti-rotation stop part 201 is provided with a set screw groove 203, and the set screw 10 is installed in the set screw groove 203. The inside of the rotating handle 3 is provided with an injection rod rotating groove 301 that cooperates with the rotating shaft 204. The front of the injection rod rotating groove 301 is provided with an injection rod moving hole 303. The front slots left 903a and right 903b, and the rear slots left 106a and right 106b are not on the same plane. Correspondingly, the front latches left 703a and right 703b, and the rear latches left 705a and right 705b of the flat-plate inlet head 7 are also not on the same plane, preventing the flat-plate inlet head 7 from being installed backwards. When the rear latches left 705a and right 705b are engaged with the rear slots left 106a and right 106b, they are not in the same space as the inlet at the rear end 702 of the inlet head, preventing debris from entering the inner cavity of the flat-plate inlet head 7. The positioning structure 108 is inserted into the positioning rib 904, and the inlet head locking member 9 is positioned and fixed, ensuring that the flat-plate inlet head 7 is securely mounted. The tail end of the rotating handle 3 is provided with a decorative internal thread 304, and the outer side of the decorative cap 4 is provided with a decorative external thread 401. The decorative internal thread 304 and the decorative external thread 401 are engaged and connected by rotating the screwdriver slot 403. The inner side of the decorative cap 4 is provided with a rotating cavity 402, and the injection rod 2 can rotate freely within the rotating cavity 402. The outer side of the rotating handle 3 is provided with an external thread 302, and the tail end of the main body 1 is provided with an internal thread. The internal thread and the external thread 302 are engaged and connected, and the injection rod 2 is moved back and forth by rotating the rotating handle 3.

[0032] like Figure 11The diagram shows a schematic of the assembly structure of a flat-plate implant head for an intraocular lens implantation system provided by the present invention. The loading method of the flat-plate implant head 7 is as follows: The flat-plate implant head 7 is tilted and moved as shown in direction ① of the diagram, allowing the front end 701 of the implant head to pass through the positioning rib 904, completing the movement in direction ①; then the flat-plate implant head 7 moves upward as shown in direction ② of the diagram, stopping when the left 704a and right 704b of the upper stop surface of the implant head locking member contact the left 902a and right 902b of the upper stop surface of the implant head, completing the movement in direction ②; then the flat-plate implant head 7 moves backward close to the left 902a and right 902b of the upper stop surface of the implant head, as shown in direction ③ of the diagram, until the left 706a and right 706b of the lower stop surface of the main body contact the lower stop surface of the implant head. The left side 107a of the guide head and the right side 107b of the lower stop surface of the guide head contact each other, restricting the up and down movement of the flat guide head 7. When the left rear buckle 705a and the right rear buckle 705b contact the left rear slot 106a and the right rear slot 106b, the guide head stops, completing the movement in direction ③. Then the guide head locking member 9 moves backward as shown in direction ④ in the figure below. When the left front slot 903a and the right front slot 903b contact the left front buckle 703a and the right front buckle 703b, the guide head stops, completing the movement in direction ④. The buckle locking switch 5 is opened, which activates the locking mechanism 502, causing the buckle structure 503 to pop out. The stop switch slot 103 cooperates with the buckle structure 503 to lock the guide head locking member 9, fixing the flat guide head 7 and completing the loading.

[0033] The disassembly method of the flat-type inlet head 7 is as follows: Close the buckle locking switch 5, activate the locking mechanism 502, causing the buckle structure 503 to retract, and the stop switch slot 103 to separate from the buckle structure 503. At this time, the inlet head locking member 9 can move forward, as shown in direction ⑤ of the figure below. The left front slot 903a and the right front slot 903b disengage from the left front buckle 703a and the right front buckle 703b, so that the inlet head locking member 9 moves to the frontmost position, completing the movement in direction ⑤. Then the flat-type inlet head 7 moves forward, as shown in direction ⑥ of the figure below. The left rear buckle 705a and the right rear buckle 705b disengage from the left rear slot 106a and the right rear slot 106b. The lower stop surfaces 706a and 706b of the main body disengage from the lower stop surfaces 107a and 107b of the guide head, completing movement in direction ⑥. Then, the flat guide head 7 moves downward as shown in direction ⑦ in the figure below, disengaging from the upper stop surfaces 704a and 704b of the guide head locking member from the upper stop surfaces 902a and 902b of the guide head, completing movement in direction ⑦ in the figure below. Then, the flat guide head 7 tilts and moves as shown in direction ⑧ in the figure below, disengaging the front end 701 of the guide head from the positioning rib 904, completing movement in direction ⑧. At this point, disassembly is complete.

[0034] This invention features a simple structure, low cost, ingenious design, and convenient assembly and disassembly. It eliminates the need for pre-folding the intraocular lens (IOL), simplifies IOL loading, and effectively prevents IOL fragments from falling out and causing intraocular inflammation. It has broad application prospects and is conducive to widespread adoption. The implanter is made of metal and is reusable, significantly reducing costs compared to disposable plastic injectors.

[0035] This article uses specific examples to illustrate the inventive concept in detail. The description of the above embodiments is only for the purpose of helping to understand the core idea of ​​the present invention. It should be noted that any obvious modifications, equivalent substitutions or other improvements made by those skilled in the art without departing from the inventive concept should be included within the protection scope of the present invention.

Claims

1. An intraocular intraocular lens implantation system, characterized in that, The device includes a metal implant, a flat-plate implant head, and an intraocular lens. The flat-plate implant head has a smooth inner cavity that gradually narrows from back to front. An intraocular lens is placed in this cavity in an inverted S-shape. The metal implant works in conjunction with the intraocular lens to fold it within the cavity. The metal implant consists of a main body, an injection rod, a rotating handle, a decorative cap, a locking switch, a retaining spring, an implant head locking mechanism, and two set screws. The front end of the main body passes through the implant head locking mechanism and connects to the flat-plate implant head. The rear end of the main body is threaded to the rotating handle, and a decorative cap is installed at the rear end of the rotating handle. The injection rod passes through the main body, and a rear limiting platform is located at the front of the main body. Anti-rotation table, stop switch slot, start switch slot, left motion support surface, right motion support surface, left rear slot, right rear slot, left lower stop surface of the inlet head, right lower stop surface of the inlet head, positioning structure and top screw hole. The flat inlet head consists of an inlet head front end and an inlet head rear end. The inlet head rear end is provided with a left front buckle, a right front buckle, a left upper stop surface of the inlet head locking component, a right upper stop surface of the inlet head locking component, a left rear buckle, a right rear buckle, a left lower stop surface of the main body, a right lower stop surface of the main body, and a hand operation part. The inlet head locking component is provided with an anti-slip handle. Left upper stop surface of the inlet head, right upper stop surface of the inlet head, left front slot, right front slot, positioning rib, anti-rotation groove, rear limit surface and front limit surface. The head locking component has symmetrically arranged switch mounting slots on its upper and lower sides. A snap-locking switch is installed in each slot, consisting of a button, a locking mechanism, and a snap-lock structure. The switch mounting slot engages with the snap-lock structure. Pressing the button activates the locking mechanism, causing the snap-lock structure to pop out and retract, thus locking and unlocking. The head locking component and the snap-locking switch form an assembly mounted on the main body. The anti-rotation platform is connected to the anti-rotation groove. The left and right movement support surfaces mate with the left and right stop surfaces of the head lock, allowing the head locking component to move back and forth on the main body. The second set screw is installed in the set screw hole. When the head locking component moves forward, the start switch engages. The slot and buckle structure cooperate to prevent the inlet head locking component from falling off from the front end. When the inlet head locking component moves backward, the rear limiting platform cooperates with the rear limiting surface to restrict the inlet head locking component from falling off from the rear end. The stop switch slot cooperates with the buckle structure to lock the inlet head locking component, thus fixing the flat inlet head. The front left, front right, rear left, and rear right slots are not on the same plane. The front left, front right, rear left, and rear right buckles of the flat inlet head corresponding to the front left, front right, rear left, and rear right slots are also not on the same plane. When the rear left and rear right buckles are engaged with the rear left and rear right slots, they are not in the same space as the rear inlet of the inlet head.

2. The intraocular intraocular lens implantation system according to claim 1, characterized in that, The injection rod has an injection head at its front end and a rotating shaft at its rear end. The rotating shaft has a retaining ring groove at its end, and the retaining ring is installed in the retaining ring groove. The injection rod has an anti-rotation stop part in its middle part, and a rearward limit is provided at the front of the anti-rotation stop part. The anti-rotation stop part has a set screw groove at its rear end, and the set screw is installed in the set screw groove. The rotating handle has an injection rod rotating groove inside that cooperates with the rotating shaft. An injection rod moving hole is provided in front of the injection rod rotating groove.

3. The intraocular intraocular lens implantation system according to claim 2, characterized in that, The positioning structure is inserted into the positioning rib.

4. The intraocular intraocular lens implantation system according to claim 3, characterized in that, The tail end of the rotating handle is provided with a decorative internal thread, and the outer side of the decorative cap is provided with a decorative external thread. The decorative internal thread and the decorative external thread are engaged and connected by rotating the screwdriver slot with a screwdriver.

5. The intraocular intraocular lens implantation system according to claim 4, characterized in that, The decorative cap has a rotating cavity on its inner side, and the injection rod can rotate freely within the rotating cavity.

6. The intraocular intraocular lens implantation system according to claim 5, characterized in that, The rotating handle has an external thread on its exterior, and the tail end of the main body has an internal thread. The internal thread and the external thread mesh with each other, and rotating the rotating handle drives the injection rod to move back and forth.

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