A detachable semi-preassembled intraocular lens implantation system

Abstract

The invention discloses a detachable semi-preinstalled intraocular lens implantation system, comprising an introduction head, a loading chamber and an intraocular lens, the introduction head is connected to the front end of the loading chamber, an intraocular lens is arranged inside the loading chamber, the rear end of the loading chamber is connected to an injector, an introduction head tip is arranged at the front end of the introduction head, a tip bevel one is arranged on the tip of the introduction head, the tip of the introduction head is at an angle of 30-45° to the horizontal, a tip bevel two is arranged on the basis of the tip bevel one, the tip bevel two is at an angle of 10-20° to the horizontal, an introduction head inner cavity is arranged on the inner side of the introduction head, the loading chamber is composed of a loading chamber base and a loading chamber upper cover, the loading chamber base and the loading chamber upper cover are integrally formed, and can be folded and used together, the crystal of the invention has been preinstalled in the implantation system, and the doctor only needs to match the implantation system with the metal injector to use it, the implantation process is simple, the risk of contamination can be reduced, the chance of infection of the patient is reduced, the comprehensive cost is low, it has broad application prospects, and is conducive to popularization and application.

Description

Technical Field

[0001] The present invention relates to the technical field of artificial lenses, and in particular to a detachable semi-preassembled artificial lens implantation system. Background Art

[0002] At present, artificial lenses are the most effective method for correcting aphakic refraction. In the prior art, tweezers are usually used to place the artificial lens into the artificial lens implantation device, and then the artificial lens is folded using a folding device, and finally implanted into the eye through the artificial lens through the implantation device body. Not only is the implantation process complicated, but it also requires the operation of trained nurses, which is highly professional and can easily cause problems if not properly operated. In addition, when artificial lenses are operated in the operating room and tweezers are used to clamp the artificial lenses, they can also cause damage to the artificial lenses, increase the risk of contamination of the artificial lenses, increase the probability of infection in patients, and lead to slower recovery of patients.

[0003] In the prior art, pre-installed injectors, as a trend in ophthalmic medicine, have greater competitiveness in ophthalmic intraocular lens injection. However, the pre-installed implant system needs to be composed of a disposable injector and a pre-installed introduction head. The disposable injector parts are injection molded, which requires multiple sets of molds. The unit price of the product is also relatively expensive. Each lens needs to be equipped with a injector, and the injection molded injector push needle is easy to deform and easily cause damage to the intraocular lens. The overall cost is relatively high. Therefore, it is urgent to develop a detachable semi-pre-installed intraocular lens implant system to solve the above technical problems.

[0004] In view of this, the present invention is proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a detachable semi-preinstalled intraocular lens implant system. The lens has been preinstalled in the implant system. The doctor only needs to match the implant system with a metal injector to use it. The implantation process is simple, which can reduce the risk of contamination and the chance of infection for patients. The overall cost is low, and it has broad application prospects and is conducive to promotion and application.

[0006] In order to achieve the above-mentioned object, the present invention provides a detachable semi-preassembled intraocular lens implantation system, comprising an introduction head, a loading chamber and an intraocular lens, wherein the introduction head is connected to the front end of the loading chamber, an intraocular lens is arranged inside the loading chamber, and the rear end of the loading chamber is connected to a pusher;

[0007] The intraocular lens comprises a lens body, an anterior lens haptic, a posterior lens haptic and a lens optical zone;

[0008] The front end of the introduction head is provided with an introduction head tip, the introduction head tip is provided with a tip bevel 1, the tip bevel 1 is at an angle of 30-45° to the horizontal, the tip bevel 1 is provided with a tip bevel 2 on the basis of the tip bevel 1, the tip bevel 2 is at an angle of 10-20° to the horizontal, a card slot 1 is provided on one or both sides of the rear end of the introduction head, an introduction head inner cavity is provided on the inner side of the introduction head, the introduction head inner cavity is a lens push cavity, the artificial lens is folded, compressed and pushed out in the introduction head inner cavity, and loading bin matching transition surfaces are provided on both sides of the rear end of the introduction head inner cavity A viscoelastic injection hole is provided on the upper side of the rear end of the inner cavity of the introduction head. After the introduction head is assembled with the loading bin, an appropriate amount of viscoelastic is injected through the viscoelastic injection hole. A push pin avoidance groove is provided on the lower side of the rear end of the inner cavity of the introduction head to avoid the push pin of the pusher and prevent the push pin of the pusher from scratching the inner cavity of the introduction head and dropping debris, which introduces a risk of contamination to the surgery. An introduction head rear end face is provided at the rear end of the introduction head, and a pusher mating surface is provided between the front and rear ends of the introduction head. After the introduction head is assembled with the loading bin, it cooperates with the second card slot of the pusher sleeve to limit the forward and backward movement of the introduction head.

[0009] The loading bin is composed of a loading bin base and a loading bin upper cover, which are integrally formed and used by folding. The front ends of the loading bin base and the loading bin upper cover are provided with an introduction head limiting surface, which cooperates with the pusher matching surface to limit the introduction head and prevent the introduction head from moving forward and backward. A loading bin folding position is provided at the connection between the loading bin base and the loading bin upper cover, and the loading bin base and the loading bin upper cover are assembled by rotating and folding the loading bin folding position. A pusher buckle is provided at the rear end of the loading bin upper cover for cooperating with the card slot three of the pusher sleeve.

[0010] Preferably, the loading bin base is provided with a crystal body loading area, in which the crystal body is pre-installed in the initial state, crystal body initial state support bars are provided on both sides of the crystal body loading area, and two left-right symmetrical crystal body initial state support balls are provided on the front side of the crystal body loading area, the crystal body initial state support bars and the crystal body initial state support balls are both provided at the edge of the crystal body to jointly support the crystal body, so that the crystal optical zone is suspended in mid-air, avoiding friction between the crystal optical zone and the loading bin, preventing wear of the crystal optical zone, and affecting the surgical effect.

[0011] Preferably, a first lens posterior loop support surface is provided on the left rear side of the lens body loading area, and the first lens posterior loop support surface is a curved surface with increasing height from left to right, which is used to support the root of the posterior loop, or to transition to the second lens posterior loop support surface to prevent the posterior loop from wrinkling. A second lens posterior loop support surface is provided on the right rear side of the lens body loading area, which is used to support the head of the lens posterior loop. The second lens posterior loop support surface is a curved surface with increasing height from back to front. When the lens is pushed, the lens posterior loop moves toward the upper side of the lens body, which is conducive to the lens body folding and wrapping the lens posterior loop to prevent the lens from being clamped during the push injection; a lens posterior loop anti-slip groove is provided on the right rear side of the second lens posterior loop support surface, and the head of the lens posterior loop is inserted into the anti-slip groove to prevent the movement of the lens posterior loop and affect the folding effect of the lens posterior loop.

[0012] Preferably, a lens front loop support surface is provided on the left front side of the lens main body loading area, a lens front loop anti-slip groove is provided on the front side of the lens front loop support surface, the lens front loop head is inserted into the lens front loop anti-slip groove to prevent the lens front loop from moving and affecting the folding effect of the lens front loop, and a lens front loop folding surface is provided on the rear side of the lens front loop anti-slip groove to prevent the lens front loop from automatically detaching when the lens main body moves, and when the lens main body moves to a certain position, the lens front loop automatically detaches from the lens front loop folding surface, and the lens front loop support surface is provided on the left front side of the lens main body loading area, and the lens front loop anti-slip groove is provided on the front side of the lens front loop anti-slip groove to prevent the lens front loop from automatically detaching when the lens main body moves. The surface is higher than the loading area of ​​the crystal body. When the crystal is pushed, the crystal body moves under the front loop of the crystal, which is beneficial for the crystal body to fold and wrap the front loop of the crystal to prevent the lens from being clamped during injection. A crystal guiding transition surface is provided on the lower side of the front loop support surface of the crystal. The crystal guiding transition surface is hollow and has a high slope that increases from back to front. It guides the crystal body to move from the lower side of the crystal guiding transition surface to avoid blocking the movement of the crystal and ensure smooth injection. A crystal body movement lower support bar is provided on the front side of the support bar in the initial state of the crystal body.

[0013] Preferably, a push pin lower guide groove is provided in the middle of the loading bin base, base clamping grooves are provided on both sides of the crystal body guide surface, and crystal body guide surfaces are provided on both sides of the crystal body initial state support bar and the crystal body movement lower support bar to guide the crystal body to move within the crystal body guide surface to ensure that the crystal moves on the central axis of the loading bin and prevent the crystal from shifting left and right. A loading bin clamping column is provided on the front side of the crystal front loop anti-slip groove, and the loading bin clamping column cooperates with the clamping slot to limit the introduction head and prevent the introduction head from moving left and right.

[0014] Preferably, an upper guide groove for the push pin is provided on the central axis of the upper cover of the loading bin, and the upper guide groove for the push pin cooperates with the lower guide groove for the push pin to limit the movement of the push pin of the injector up, down, left, and right, and can only move forward and backward, thereby ensuring that the push pin moves on the central axis and more effectively injects the artificial lens; upper support bars on the initial state of the crystal body are provided on the rear ends of both sides of the upper cover of the loading bin to limit the upward movement of the crystal body, and the upper support bars on the initial state of the crystal body are arranged on the edge of the crystal body, and the supported crystal body makes the optical zone of the crystal float in mid-air, thereby avoiding friction between the optical zone of the crystal and the loading bin, preventing wear on the optical zone of the crystal, and affecting the surgical effect.

[0015] Preferably, a lens front loop initial state anti-detachment column is provided between the right side of the guide groove on the push pin and the upper support bar of the crystal body in the initial state. In the initial state, the lens front loop is always pressed to prevent the lens front loop from falling off the lens front loop support surface, thereby ensuring transportation stability. A lens rear loop initial state anti-detachment column is provided between the left side of the guide groove on the push pin and the upper support bar of the crystal body in the initial state. In the initial state, the lens rear loop is always pressed to prevent the lens rear loop from falling off from the lens rear loop support surface one and the lens rear loop support surface two, thereby ensuring transportation stability.

[0016] Preferably, a lens front and rear loop guide groove is provided on the inner side of the front end of the upper support bar in the initial state of the lens body to guide the movement of the lens posterior loop and ensure that the lens posterior loop is stably folded; an upper support bar for the movement of the crystal body is provided on the outer side of the front end of the upper support bar in the initial state of the lens body; the upper support bar for the movement of the crystal body and the lower support bar for the movement of the crystal body cooperate with each other to ensure that the crystal body moves along the specified track; upper cover buckles are provided on both sides of the upper support bar for the movement of the crystal body; the upper cover buckles cooperate with the base slots to fix the loading bin base and the loading bin upper cover, thereby fixing the artificial lens and the introduction head, so that the introduction head, the artificial lens and the loading bin are assembled together.

[0017] Preferably, after the introduction head and the loading bin are assembled, the upper support bar for the movement of the crystal body is higher than the crystal guiding transition surface, ensuring that the crystal transitions smoothly without being damaged. The gap between the upper support bar for the movement of the crystal body and the crystal guiding transition surface is smaller than the width of the front and rear loops of the crystal, preventing the crystal loop from falling into this gap during the movement of the crystal, affecting the folding of the loop, and even possibly damaging the loop. When the introduction head and the loading bin are assembled, the lower support bar for the movement of the crystal body and the transition surface of the loading bin are smoothly tangent to each other, ensuring that the crystal enters the introduction head smoothly without being scratched. When the introduction head and the loading bin are assembled, the gap between the front loop anti-slip groove of the crystal and the rear end face of the introduction head is smaller than the width of the front and rear loops of the crystal, preventing the crystal loop from falling into this gap during the movement of the crystal, affecting the folding of the loop, and even possibly damaging the loop.

[0018] Preferably, the card slot 1 is arranged on the left side, the right side, or both sides of the rear end of the introduction head, and the card slots 1 arranged on the left and right sides have different lengths.

[0019] The present invention provides a detachable semi-preassembled intraocular lens implantation system, which has the following beneficial effects.

[0020] 1. The present invention can save doctors from the work of inserting crystals, reducing doctors' tedious work. Crystals are pre-installed in the sterile workshop of the factory, which can also reduce the risk of contamination, reduce the chance of infection for patients, and speed up the recovery of patients.

[0021] 2. The present invention includes an introduction head and a loading chamber for pre-loading crystals, which can be used in conjunction with a metal pusher to reduce the probability of the crystals being crushed and flowing into the patient's body when the crystals are loaded into the device. The metal pusher can be sterilized and used multiple times, which can save costs.

[0022] 3. The present invention can disassemble the loading chamber and the introduction head. The introduction head can be sold separately as a non-pre-installed sales, or it can be used with a disposable injector as a non-pre-installed sales; the loading chamber can be loaded with a crystal and sold as a crystal packaging box; it can also be used with a disposable injector as a pre-installed sales; the development of a set of introduction heads and loading chambers can meet the needs of doctors with different habits, greatly reducing the cost of use.

[0023] 4. The angle between the tip bevel and the horizontal is 30-45°. The design of less than 45° facilitates the insertion of the introduction head into the surgical incision. The slope design can increase the tip opening length, increase the minimum inner diameter cross-sectional area of ​​the front end closed, and reduce the compressed force and the injection force during the crystal injection process, thereby reducing the risk of head explosion at the tip of the introduction head.

[0024] 5. The angle between the second bevel of the tip of the present invention and the horizontal is 10-20°, so as to increase the length of the tip opening. During the intraocular lens injection process, the minimum inner diameter cross-sectional area of ​​the front end is increased. During the intraocular lens injection process, the compressed force is reduced again, and the injection force is reduced again, thereby reducing the risk of head explosion at the tip of the introduction head again. The double-angle bevel design can greatly reduce the risk of head explosion, reduce the injection force, and improve the injection efficiency and success rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A stereoscopic diagram of a removable semi-preinstalled intraocular lens implant system;

[0026] Figure 2 It is a front view of a removable semi-preassembled intraocular lens implant system;

[0027] Figure 3 for Figure 2 Schematic diagram of the cross-section AA structure and the local enlarged view of point I;

[0028] Figure 4 for Figure 2 Schematic diagram of the structure of section BB and the local enlarged view of section II;

[0029] Figure 5 for Figure 2 Schematic diagram of the cross-section CC structure;

[0030] Figure 6 It is a three-dimensional diagram of the loading bin base and the loading bin cover in an unassembled state;

[0031] Figure 7 This is the front view of the loading bin base and loading bin cover in an unassembled state;

[0032] Figure 8 for Figure 7 A partial enlarged view of location III;

[0033] Fig. 9 This is a three-dimensional diagram of the loading bin in an unfolded state;

[0034] Fig.10 for Fig. 9 A partial enlarged view of location IV;

[0035] Fig.11 for Fig. 9 A partial enlarged view of point V;

[0036] Fig.12 This is the main view of the loading bin in the expanded state;

[0037] Fig.13 for Fig.12 A partial enlarged view of point VI;

[0038] Fig.14 for Fig.12 A partial enlarged view of point VII;

[0039] Fig.15 for Fig.12 Schematic diagram of the cross-section DD and EE structures;

[0040] Fig.16 for Fig.15 A partial enlarged view of location VIII;

[0041] Fig.17 for Fig.15 A partial enlarged view of location IX;

[0042] Fig.18 A stereogram of the introduction head;

[0043] Fig.19 It is a side view of the introduction head;

[0044] Fig. 20 This is a schematic diagram of the structure of the inner cavity at the tip of the introduction head;

[0045] Fig.21 Schematic diagram of the structure of an intraocular lens;

[0046] Fig. 22 It is a schematic diagram of the structure of a metal pusher;

[0047] Fig.23 It is a schematic diagram of the structure after the detachable semi-preassembled intraocular lens implant system and the metal injector are assembled;

[0048] Fig.24 It is a schematic diagram of the structure of a non-preloaded metal pusher;

[0049] Fig.25 It is a schematic diagram of the structure of the disassembled introduction head of the detachable semi-preloaded intraocular lens implant system and the assembled non-preloaded metal injector;

[0050] Fig.26 The present invention is a schematic diagram of the structure of a disposable preloaded implant system in which a detachable semi-preloaded intraocular lens implant system is used in conjunction with a disposable injector.

[0051] In the figure:

[0052] 1. Introduction head 101. Introduction head tip 102. Introduction head cavity 103. Loading chamber matching transition curved surface 104. Card slot 1 105. Viscoelastic injection hole 106. Push pin avoidance slot 107. Tip slope 1 108. Tip slope 2 109. Pusher matching surface 110. Introduction head rear end surface 2. Loading chamber 2A. Loading chamber base 2A01. Crystal body loading area 2A02. Crystal body initial state support bar 2A03. Crystal body initial state support ball 2A04. Crystal posterior loop support surface 1 2A05. Crystal posterior loop anti-slip groove 2A06. Crystal front loop support surface 2A07. Crystal front loop folding surface 2A08. Crystal front loop anti-slip groove 2A09. Push pin lower guide groove 2A10. Base card slot 2A11. Crystal body guide surface 2A12. Loading chamber card column 2A13. Crystal guide transition surface 2A14. Lower support bar for movement of crystal body 2A15. Second support surface of posterior haptic of crystal 2A16. Folding position of loading bin 2A17. Limiting surface of introduction head 2B. Upper cover of loading bin 2B01. Upper guide groove of push pin 2B02. Upper cover buckle 2B03. Upper support bar of initial state of crystal body 2B04. Guide grooves of front and rear haptics of crystal 2B05. Anti-detachment column of initial state of anterior haptic of crystal 2B06. Anti-detachment column of initial state of posterior haptic of crystal 2B07. Upper support bar for movement of crystal body 2B08. Buckle of pusher 3. Artificial lens 301. Crystal body 302. Anterior haptic of crystal 303. Posterior haptic of crystal 304. Optical zone of crystal 4. Pusher 401. Pusher sleeve 402. Pusher push pin 403. Pusher rotating rod 404. Slot three 405. Slot two 406. Thread. DETAILED DESCRIPTION

[0053] The present invention is further described below in conjunction with specific embodiments and drawings to help understand the content of the present invention.

[0054] like Figure 1-Figure 5 As shown, they are a stereoscopic view, a front view, a schematic diagram of the structure of the front view section AA and a partial enlarged view at position I, a schematic diagram of the structure of the front view section BB and a partial enlarged view at position II, and a schematic diagram of the structure of the front view section CC. The detachable semi-preassembled intraocular lens implantation system comprises an introduction head 1, a loading chamber 2 and an intraocular lens 3, wherein the introduction head 1 is connected to the front end of the loading chamber 2, an intraocular lens 3 is arranged inside the loading chamber, and the rear end of the loading chamber is connected to the injection device 4;

[0055] like Fig.21 , which is a schematic diagram of the structure of an artificial lens. The artificial lens 3 includes a lens body 301, an anterior lens haptic 302, a posterior lens haptic 303 and a lens optical zone 304;

[0056] like Figure 18-Figure 20 The figures are a stereoscopic view, a side view and a schematic diagram of the structure of the inner cavity of the tip of the introduction head. The front end of the introduction head 1 is provided with an introduction head tip 101, and the introduction head tip 101 is provided with a tip slope 107, and the angle of the tip slope 107 to the horizontal is 30-45 degrees. The tip slope 107 is provided with a tip slope 2 108 on the basis of the tip slope 107, and the angle of the tip slope 2 108 to the horizontal is 10-20 degrees. A card slot 104 is provided on one side or both sides of the rear end of the introduction head 1, and the card slot 104 is provided on the left side, the right side or both sides of the rear end of the introduction head 1, and the lengths of the card slots 104 provided on the left and right sides are different. The inner side of the introduction head 1 is provided with an introduction head inner cavity 102, and the introduction head inner cavity 102 is a lens push cavity. The artificial lens is folded, compressed and pushed out in the introduction head inner cavity 102. The two sides of the rear end of the introduction head inner cavity 102 are provided with a loading bin matching transition curved surface 103. The upper side of the rear end of the introduction head inner cavity 102 is provided with a viscoelastic injection hole 105. After the introduction head 1 is assembled with the loading bin, an appropriate amount of viscoelastic is injected through the viscoelastic injection hole 105. A push pin avoidance groove 106 is provided at the lower side of the rear end of the head inner cavity 102 to avoid the push pin 402 of the pusher, so as to prevent the push pin 402 from scratching the introduction head inner cavity 102 and dropping debris, thereby introducing a risk of contamination to the operation. The rear end of the introduction head 1 is provided with an introduction head rear end face 110, and a pusher matching face 109 is provided between the front and rear ends of the introduction head 1. After the introduction head 1 is assembled with the loading bin 2, it matches with the second card slot 405 of the pusher sleeve 401 to limit the forward and backward movement of the introduction head 1.

[0057] like Figure 6-Figure 17As shown, there are respectively a stereoscopic view of the loading bin base and the loading bin upper cover in the unassembled state, a front view of the loading bin base and the loading bin upper cover in the unassembled state and a partial enlarged view at III, a stereoscopic view of the loading bin in the expanded state and partial enlarged views at IV and V, a front view of the loading bin in the expanded state and partial enlarged views at VI and VII, and a schematic diagram of the cross-section DD and EE structure and partial enlarged views at VIII and IX. The loading bin 2 is composed of a loading bin base 2A and a loading bin upper cover 2B. The loading bin base 2A and the loading bin upper cover 2B are integrally formed and used by folding. The front ends of the loading bin base 2A and the loading bin upper cover 2B are provided with an introduction head limiting surface 2A17. The introduction head limiting surface 2A17 cooperates with the pusher matching surface 109 to limit the introduction head 1 to prevent the introduction head 1 from moving forward and backward. A loading bin folding position 2A16 is provided at the connection between the loading bin base 2A and the loading bin upper cover 2B. The loading bin folding position 2A16 is rotated and folded to realize the assembly of the loading bin base 2A and the loading bin upper cover 2B. The rear end of the loading bin upper cover 2B is provided with a pusher buckle 2B08 for cooperating with the card slot three 404 of the pusher sleeve 401.

[0058] The loading bin base 2A is provided with a crystal body loading area 2A01, in which the crystal body 301 is pre-installed in the initial state, and crystal body initial state support bars 2A02 are provided on both sides of the crystal body loading area 2A01, and two left-right symmetrical crystal body initial state support balls 2A03 are provided on the front side of the crystal body loading area 2A01, and the crystal body initial state support bars 2A02 and the crystal body initial state support balls 2A03 are both provided on the edge of the crystal body 301 to jointly support the crystal body 301, so that the crystal optical zone 304 is suspended in mid-air, avoiding friction between the crystal optical zone 304 and the loading bin 2, and preventing wear of the crystal optical zone 304, which affects the surgical effect.

[0059] The left rear side of the lens body loading area 2A01 is provided with a lens back loop support surface 2A04, which is a curved surface with increasing height from left to right, and is used to support the root of the back loop, or to transition to the lens back loop support surface 2A15 to prevent the back loop from wrinkling. The right rear side of the lens body loading area 2A01 is provided with a lens back loop support surface 2A15, which is used to support the head of the lens back loop 303. The lens back loop support surface 2A15 The high curved surface increases from back to front. When the lens is pushed, the posterior lens loop 303 moves toward the upper side of the lens body 301, which is conducive to the lens body 301 folding and wrapping the posterior lens loop 303 to prevent the lens from being clamped during the injection. A posterior lens loop anti-slip groove 2A05 is provided on the right rear side of the posterior lens loop support surface 2A15, and the head of the posterior lens loop 303 is inserted into the posterior lens loop anti-slip groove 2A05 to prevent the posterior lens loop 303 from moving and affecting the folding effect of the posterior lens loop 303.

[0060] A lens front loop support surface 2A06 is provided on the left front side of the lens main body loading area 2A01, and a lens front loop anti-slip groove 2A08 is provided on the front side of the lens front loop support surface 2A06. The head of the lens front loop 302 is inserted into the lens front loop anti-slip groove 2A08 to prevent the lens front loop 302 from moving and affecting the folding effect of the lens front loop 302. A lens front loop folding surface 2A07 is provided on the rear side of the lens front loop anti-slip groove 2A08 to prevent the lens front loop 302 from automatically detaching when the lens main body 301 moves. When the lens main body 301 moves to a certain position, the lens front loop 302 automatically detaches from the lens front loop folding surface 2A07. The supporting surface 2A06 is higher than the crystal body loading area 2A01. When the crystal is pushed, the crystal body 301 moves under the front loop 302 of the crystal, which is beneficial for the crystal body 301 to fold and wrap the front loop 302 of the crystal to prevent the crystal from being clamped during injection. A crystal guiding transition surface 2A13 is provided on the lower side of the front loop supporting surface 2A06 of the crystal. The crystal guiding transition surface 2A13 is hollow and has a high slope that increases from back to front. It guides the crystal body 301 to move from the lower side of the crystal guiding transition surface 2A13 to avoid blocking the movement of the crystal and ensure smooth injection. A crystal body movement lower support bar 2A14 is provided on the front side of the support bar 2A02 of the initial state of the crystal body.

[0061] A push pin lower guide groove 2A09 is provided in the middle of the loading bin base 2A, and base clamping grooves 2A10 are provided on both sides of the crystal body guide surface 2A11. Crystal body guide surfaces 2A11 are provided on both sides of the crystal body initial state support bar 2A02 and the crystal body movement lower support bar 2A14, which guide the crystal body 301 to move in the crystal body guide surface 2A11 to ensure that the crystal moves on the central axis of the loading bin 2 and prevent the crystal from shifting left and right. A loading bin clamping column 2A12 is provided on the front side of the crystal front loop anti-slip groove 2A08, and the loading bin clamping column 2A12 cooperates with the clamping slot 104 to limit the introduction head 1 and prevent the introduction head 1 from moving left and right.

[0062] The central axis of the upper cover 2B of the loading bin is provided with an upper guide groove 2B01 for pushing the needle, and the upper guide groove 2B01 for pushing the needle cooperates with the lower guide groove 2A09 for pushing the needle, so as to limit the push needle 402 of the injector from moving up, down, left, and right, and can only move forward and backward, so as to ensure that the push needle moves on the central axis, and the intraocular lens 3 is pushed and injected more effectively; the rear ends of both sides of the upper cover 2B of the loading bin are provided with upper support bars 2B03 of the initial state of the crystal body, so as to limit the upward movement of the crystal body 301, and the upper support bars 2B03 of the initial state of the crystal body are arranged at the edge of the crystal body 301, and the supporting crystal body 301 makes the crystal optical zone 304 suspended in mid-air, so as to avoid friction between the crystal optical zone 304 and the loading bin 2, and prevent the wear of the crystal optical zone 304, which affects the surgical effect;

[0063] A lens front loop initial state anti-detachment column 2B05 is provided between the right side of the push pin upper guide groove 2B01 and the upper support bar 2B03 of the lens body in the initial state, which always presses the lens front loop 302 in the initial state to prevent the lens front loop 302 from falling off from the lens front loop support surface 2A06, thereby ensuring transportation stability; a lens rear loop initial state anti-detachment column 2B06 is provided between the left side of the push pin upper guide groove 2B01 and the upper support bar 2B03 of the lens body in the initial state, which always presses the lens rear loop 303 in the initial state to prevent the lens rear loop 303 from falling off from the lens rear loop support surface 1 2A04 and the lens rear loop support surface 2A15, thereby ensuring transportation stability;

[0064] The front inner side of the upper support bar 2B03 in the initial state of the crystal body is provided with a front and rear lens loop guide groove 2B04 to guide the movement of the rear lens loop 303 to ensure that the rear lens loop 303 is stably folded. The front outer side of the upper support bar 2B03 in the initial state of the crystal body is provided with an upper support bar 2B07 for the movement of the crystal body. The upper support bar 2B07 for the movement of the crystal body cooperates with the lower support bar 2A14 for the movement of the crystal body to ensure that the crystal body 301 moves according to the specified orbit. Upper cover buckles 2B02 are provided on both sides of the upper support bar 2B07 for the movement of the crystal body. The upper cover buckles 2B02 cooperate with the base slots 2A10 to fix the loading bin base 2A and the loading bin upper cover 2B, thereby fixing the artificial lens 3 and the introduction head 1, so that the introduction head 1, the artificial lens 3 and the loading bin 2 are assembled together. When the introduction head 1 is assembled with the loading bin The upper support bar 2B07 for the movement of the crystal body is higher than the crystal guiding transition surface 2A13, ensuring that the crystal transitions smoothly without being damaged. The gap between the upper support bar 2B07 for the movement of the crystal body and the crystal guiding transition surface 2A13 is smaller than the width of the front and rear loops of the crystal, preventing the crystal loop from falling into the gap during the movement of the crystal, affecting the folding of the loop, and even possibly damaging the loop. When the introduction head 1 is assembled with the loading bin, the lower support bar 2A14 for the movement of the crystal body cooperates with the transition surface 103 of the loading bin for smooth tangent transition, ensuring that the crystal enters the introduction head 1 smoothly without being scratched. When the introduction head 1 is assembled with the loading bin, the gap between the crystal front loop anti-slip groove 2A08 and the rear end face 110 of the introduction head is smaller than the width of the front and rear loops of the crystal, preventing the crystal loop from falling into the gap during the movement of the crystal, affecting the folding of the loop, and even possibly damaging the loop.

[0065] like Fig. 22 The figure is a schematic diagram of the structure of a metal pusher. The pusher 4 is composed of a pusher sleeve 401, a pusher push needle 402 and a pusher rotating rod 403. The rear end of the pusher push needle 402 is connected to the front end of the pusher rotating rod 403 through a rotary buckle and can only rotate. The rear end of the pusher rotating rod 403 is connected to the rear end of the pusher sleeve 401 through a thread 406. The front end of the pusher sleeve 401 is provided with a second card slot 405, and the rear end of the second card slot 405 is provided with a third card slot 404.

[0066] Usage scenarios and methods of the present invention:

[0067] (I) The removable semi-preassembled intraocular lens implant system is used in conjunction with the metal injector 4 (such as Fig.23 The figure shows the structure of the detachable semi-preassembled intraocular lens implant system after assembly with the metal injector.

[0068] 1. In-factory assembly

[0069] ① The loading bin base 2A and the loading bin cover 2B are bent at approximately 90°;

[0070] ② Insert the introduction head 1 into the loading bin 2, so that the introduction head limit surface 2A17 on the loading bin 2 contacts and cooperates with the pusher matching surface 109 on the introduction head 1 to prevent the introduction head 1 from moving forward and backward; make the loading bin clamping column 2A12 on the loading bin 2 contact and cooperate with the clamping groove 104 on the introduction head 1 to prevent the introduction head 1 from moving left and right;

[0071] ③ Use special crystal tweezers to clamp the posterior lens loop 303 in an S-direction, install the crystal body 301 in the crystal body loading area 2A01, and support the edge of the crystal body 301 with the initial state support bar 2A02 and the initial state support ball 2A03, so that the crystal optical zone 304 is suspended in mid-air to avoid friction between the crystal optical zone 304 and the product in the loading bin 2, and to prevent wear on the crystal optical zone 304 and affect the surgical effect; insert the head of the anterior lens loop 302 into the anterior lens loop anti-drop groove 2A08 to prevent the crystal The front loop 302 moves, affecting the folding effect of the front loop 302 of the lens. The head of the front loop 302 of the lens should be placed on the front loop support surface 2A06 of the lens to support the front loop 302 of the lens. The root of the rear loop 303 of the lens is placed on the first rear loop support surface 2A04 of the lens. The head of the rear loop 303 of the lens is inserted into the rear loop anti-slip groove 2A05 of the lens to prevent the rear loop 303 of the lens from moving and affecting the folding effect of the rear loop 303 of the lens. The head of the rear loop 303 of the lens should be placed on the second rear loop support surface 2A15 of the lens to support the rear loop 303 of the lens.

[0072] ④ Fold the loading bin upper cover 2B and match it with the loading bin base 2A through the folding loading bin folding position 2A16, so that the upper cover buckle 2B02 on the loading bin upper cover 2B engages with the base slot 2A10 on the loading bin base 2A to complete the installation of the detachable semi-preinstalled intraocular lens implant system.

[0073] 2. Used with metal injector 4

[0074] ① Take out the detachable semi-preassembled intraocular lens implant system, and inject an appropriate amount of viscoelastic agent through the viscoelastic agent injection hole 105;

[0075] ② The pusher mating surface 109 on the introduction head 1 is limitedly engaged with the second card slot 405 on the pusher 4, and the lens front loop anti-detachment groove 2A08 on the loading bin 2 is engaged with the third card slot 404 on the pusher 4 to complete the installation of the detachable semi-preassembled intraocular lens implant system and the pusher 4.

[0076] 3. Push injection

[0077] Slowly push the push rod 403 forward to push and fold the optical part. Ensure that the intraocular lens 3 and the push needle 402 of the push rod advance at the same speed; when the push rod 403 of the push rod reaches the thread 406, stop, and start using the thread 406 to rotate and push until the entire intraocular lens 3 is pushed out from the outlet. After confirming that the posterior haptic 303 of the lens is pushed out from the outlet of the introduction head 1, withdraw the detachable semi-preassembled intraocular lens implantation system from the incision.

[0078] (ii) The disassembled introduction head 1 of the detachable semi-preassembled intraocular lens implantation system is used in conjunction with the non-preassembled metal injector 4 (e.g. Fig.24 As shown, it is a schematic diagram of the structure of a non-preloaded metal pusher; Fig.25 The figure shows the structure of the detachable semi-preloaded intraocular lens implant system after the introduction head is disassembled and assembled with the non-preloaded metal injector.

[0079] 1. Crystal loading

[0080] ① Take out the disassembled introduction head 1 of the detachable semi-preassembled intraocular lens implantation system, and inject an appropriate amount of viscoelastic agent through the viscoelastic agent injection hole 105;

[0081] Use special lens tweezers to clamp the posterior haptic 303 of the lens in an S shape. After adjusting the position, fold the anterior haptic 302 of the lens using the viscoelastic injection hole 105, and continue to push the artificial lens 3 into the inner cavity 102 of the introduction head so that the anterior haptic 302 of the lens can be quickly folded in one action. Stop the injection when half of the lens body 301 is located in the inner cavity 102 of the introduction head, and ensure that the anterior haptic 302 of the lens is completely folded on the upper surface of the inner cavity 102 of the introduction head before continuing to push. Use implantation tweezers to clamp the posterior haptic 303 of the lens, and then gently fold the posterior haptic 303 over the anterior surface of the optical part. Use implantation tweezers to slowly clamp the edge of the lens body 301 and push it forward, push the artificial lens 3 to the lens mark position on the introduction head 1, and ensure that the artificial lens 3 is located at the bottom of the introduction head 1, and the posterior haptic 303 of the lens is folded on the anterior surface of the optical part.

[0082] 2. Use with non-preloaded metal injectors 4

[0083] Take out the disassembled introduction head 1 of the detachable semi-preassembled intraocular lens implantation system, match the pusher mating surface 109 on the introduction head 1 with the second slot 405 on the pusher 4, and engage the rear end surface 110 of the introduction head with the third slot 404 on the pusher 4 to complete the installation of the disassembled introduction head 1 and the pusher 4 of the detachable semi-preassembled intraocular lens implantation system.

[0084] 3. Push injection

[0085] Slowly push the push rod 403 forward to push and fold the optical part. Ensure that the intraocular lens 3 and the push needle 402 of the push rod advance at the same speed; when the push rod 403 of the push rod reaches the thread 406, stop, and start using the thread 406 to rotate and push until the entire intraocular lens 3 is pushed out from the outlet. After confirming that the posterior haptic 303 of the lens is pushed out from the outlet of the introduction head 1, withdraw the detachable semi-preassembled intraocular lens implantation system from the incision.

[0086] (III) A removable semi-preloaded intraocular lens implant system is used in conjunction with a disposable injector 4 as a disposable preloaded implant system (e.g. Fig.26 The figure shows a schematic diagram of the structure of a detachable semi-preassembled intraocular lens implant system used in conjunction with a disposable injector as a disposable preassembled implant system.

[0087] 1. In-factory assembly

[0088] ① The loading bin base 2A and the loading bin cover 2B are bent at approximately 90°;

[0089] ② Insert the introduction head 1 into the loading bin 2, so that the introduction head limit surface 2A17 on the loading bin 2 contacts and cooperates with the pusher matching surface 109 on the introduction head 1 to prevent the introduction head 1 from moving forward and backward; make the loading bin clamping column 2A12 on the loading bin 2 contact and cooperate with the clamping groove 104 on the introduction head 1 to prevent the introduction head 1 from moving left and right;

[0090] ③ Use special crystal tweezers to clamp the posterior lens loop 303 in an S-direction, install the crystal body 301 in the crystal body loading area 2A01, and support the edge of the crystal body 301 with the initial state support bar 2A02 and the initial state support ball 2A03, so that the crystal optical zone 304 is suspended in mid-air to avoid friction between the crystal optical zone 304 and the product in the loading bin 2, and to prevent wear on the crystal optical zone 304 and affect the surgical effect; insert the head of the anterior lens loop 302 into the anterior lens loop anti-drop groove 2A08 to prevent the crystal The front loop 302 moves, affecting the folding effect of the front loop 302 of the lens. The head of the front loop 302 of the lens should be placed on the front loop support surface 2A06 of the lens to support the front loop 302 of the lens. The root of the rear loop 303 of the lens is placed on the first rear loop support surface 2A04 of the lens. The head of the rear loop 303 of the lens is inserted into the rear loop anti-slip groove 2A05 of the lens to prevent the rear loop 303 of the lens from moving and affecting the folding effect of the rear loop 303 of the lens. The head of the rear loop 303 of the lens should be placed on the second rear loop support surface 2A15 of the lens to support the rear loop 303 of the lens.

[0091] ④ Fold the loading bin upper cover 2B and match it with the loading bin base 2A through the folding loading bin folding position 2A16, so that the upper cover buckle 2B02 on the loading bin upper cover 2B engages with the base slot 2A10 on the loading bin base 2A to complete the installation of the detachable semi-preinstalled intraocular lens implant system.

[0092] ⑤ Take out the removable semi-preloaded intraocular lens implant system, fit the pusher mating surface 109 on the introduction head 1 with the second card slot 405 on the pusher 4, and engage the lens anterior loop anti-detachment groove 2A08 on the loading bin 2 with the third card slot 404 on the pusher 4 to complete the installation of the removable semi-preloaded intraocular lens implant system and the pusher 4.

[0093] 2. Push injection

[0094] ① Take out the disposable pre-installed implant system and inject an appropriate amount of viscoelastic agent through the viscoelastic agent injection hole 105;

[0095] ② Slowly push the push rod 403 forward to push and fold the optical part. Ensure that the intraocular lens 3 and the push needle 402 of the push rod advance at the same speed; when the push rod 403 of the push rod reaches the thread 406, stop, and start using the thread 406 to rotate and push until the entire intraocular lens 3 is pushed out from the outlet. After confirming that the posterior haptic 303 of the lens is pushed out from the outlet of the introduction head 1, withdraw the detachable semi-preassembled intraocular lens implantation system from the incision.

[0096] The invention concept is described in detail using specific examples herein, and the description of the above embodiments is only used to help understand the core idea of ​​the invention. It should be pointed out that any obvious modification, equivalent substitution or other improvement made by a person of ordinary skill in the art without departing from the invention concept should be included in the protection scope of the present invention.

Claims

1. A detachable semi-preassembled intraocular lens implantation system, characterized in that: It includes an introduction head, a loading chamber and an artificial lens, wherein the introduction head is connected to the front end of the loading chamber, an artificial lens is arranged inside the loading chamber, and the rear end of the loading chamber is connected to the injection device; The intraocular lens comprises a lens body, an anterior lens haptic, a posterior lens haptic and a lens optical zone; The front end of the introduction head is provided with an introduction head tip, the introduction head tip is provided with a tip bevel 1, the tip bevel 1 is at an angle of 30-45° to the horizontal, the tip bevel 2 is provided on the basis of the tip bevel 1, the tip bevel 2 is at an angle of 10-20° to the horizontal, a card slot 1 is provided on one side or both sides of the rear end of the introduction head, an introduction head inner cavity is provided on the inner side of the introduction head, the introduction head inner cavity is a lens push cavity, the artificial lens is folded, compressed and pushed out in the introduction head inner cavity, both sides of the rear end of the introduction head inner cavity are provided with a loading bin matching transition curved surface, a viscoelastic injection hole is provided on the upper side of the rear end of the introduction head inner cavity, after the introduction head is assembled with the loading bin, an appropriate amount of viscoelastic is injected through the viscoelastic injection hole, a push pin avoidance groove is provided on the lower side of the rear end of the introduction head inner cavity to avoid the push pin of the pusher, an introduction head rear end face is provided at the rear end of the introduction head, a pusher matching surface is provided between the front end and the rear end of the introduction head, after the introduction head is assembled with the loading bin, it cooperates with the card slot 2 of the pusher sleeve to limit the forward and backward movement of the introduction head; The loading bin is composed of a loading bin base and a loading bin upper cover, which are integrally formed and used by folding. The front ends of the loading bin base and the loading bin upper cover are provided with an introduction head limiting surface, which cooperates with the pusher matching surface to limit the introduction head. A loading bin folding position is provided at the connection between the loading bin base and the loading bin upper cover, and the loading bin base and the loading bin upper cover are assembled by rotating and folding the loading bin folding position. A pusher buckle is provided at the rear end of the loading bin upper cover for cooperating with the slot three of the pusher sleeve.

2. The detachable semi-preassembled intraocular lens implant system according to claim 1, characterized in that: The loading bin base is provided with a crystal body loading area, in which the crystal body is pre-installed in the initial state, crystal body initial state support bars are provided on both sides of the crystal body loading area, and two left-right symmetrical crystal body initial state support balls are provided on the front side of the crystal body loading area, the crystal body initial state support bars and the crystal body initial state support balls are both provided at the edge of the crystal body to jointly support the crystal body so that the crystal optical zone is suspended in mid-air.

3. The detachable semi-preassembled intraocular lens implant system according to claim 2, characterized in that: A lens posterior loop support surface 1 is provided on the left rear side of the lens main body loading area. The lens posterior loop support surface 1 is a curved surface with increasing height from left to right, used for supporting the root of the posterior loop, or for transitioning to the lens posterior loop support surface 2. A lens posterior loop support surface 2 is provided on the right rear side of the lens main body loading area, used for supporting the head of the lens posterior loop. The lens posterior loop support surface 2 is a curved surface with increasing height from back to front. When the lens is pushed, the lens posterior loop moves to the upper side of the lens main body. A lens posterior loop anti-slip groove is provided on the right rear side of the lens posterior loop support surface 2, and the head of the lens posterior loop is inserted into the lens posterior loop anti-slip groove.

4. The detachable semi-preassembled intraocular lens implant system according to claim 3, characterized in that: A lens front loop support surface is provided on the left front side of the lens body loading area, a lens front loop anti-slip groove is provided on the front side of the lens front loop support surface, the lens front loop head is inserted into the lens front loop anti-slip groove, and a lens front loop folding surface is provided on the rear end side of the lens front loop anti-slip groove. When the lens body moves, the lens front loop is prevented from automatically detaching. When the crystal body moves to a certain position, the lens front loop automatically detaches from the lens front loop folding surface. The lens front loop support surface is higher than the lens body loading area. When the crystal is pushed, the crystal body moves under the lens front loop. A crystal guiding transition surface is provided on the lower side of the lens front loop support surface. The crystal guiding transition surface is hollow, with a high slope increasing from back to front, guiding the crystal body to move from the lower side of the crystal guiding transition surface, and a crystal body movement lower support bar is provided on the front side of the initial state support bar of the crystal body.

5. The detachable semi-preassembled intraocular lens implantation system according to claim 4, characterized in that: A push pin lower guide groove is provided in the middle of the loading bin base, base clamping grooves are provided on both sides of the crystal body guide surface, and crystal body guide surfaces are provided on both sides of the crystal body initial state support bar and the crystal body movement lower support bar to guide the crystal body to move within the crystal body guide surface to ensure that the crystal moves on the central axis of the loading bin, and a loading bin clamping column is provided on the front side of the crystal front loop anti-slip groove, and the loading bin clamping column cooperates with the clamping slot to limit the guide head.

6. The detachable semi-preassembled intraocular lens implantation system according to claim 5, characterized in that: An upper guide groove for the push pin is provided on the central axis of the upper cover of the loading bin, and the upper guide groove for the push pin cooperates with the lower guide groove for the push pin to limit the push pin of the injector to move up, down, left, and right, and can only move forward and backward, thereby ensuring that the push pin moves on the central axis and more effectively injects the artificial lens; upper support bars for the initial state of the crystal body are provided on the rear ends of both sides of the upper cover of the loading bin to limit the upward movement of the crystal body, and the upper support bars for the initial state of the crystal body are arranged on the edge of the crystal body, and the supported crystal body makes the optical zone of the crystal float in mid-air.

7. The detachable semi-preassembled intraocular lens implantation system according to claim 6, characterized in that: A lens front loop initial state anti-detachment column is provided between the right side of the guide groove on the push pin and the upper support bar of the lens body in the initial state, which always presses the front loop of the lens in the initial state. A lens rear loop initial state anti-detachment column is provided between the left side of the guide groove on the push pin and the upper support bar of the lens body in the initial state, which always presses the rear loop of the lens in the initial state.

8. The detachable semi-preassembled intraocular lens implant system according to claim 7, characterized in that: The inner side of the front end of the upper support bar in the initial state of the crystal body is provided with a front and rear lens loop guide groove to guide the movement of the rear lens loop; the outer side of the front end of the upper support bar in the initial state of the crystal body is provided with an upper support bar for the movement of the crystal body; the upper support bar for the movement of the crystal body and the lower support bar for the movement of the crystal body cooperate with each other to ensure that the crystal body moves along the specified track; upper cover buckles are provided on both sides of the upper support bar for the movement of the crystal body; the upper cover buckles cooperate with the base slots to fix the loading bin base and the loading bin upper cover, thereby fixing the artificial lens and the introduction head, so that the introduction head, the artificial lens and the loading bin are assembled together.

9. The detachable semi-preassembled intraocular lens implant system according to claim 8, characterized in that: When the introduction head and the loading bin are assembled, the upper support bar for the movement of the crystal body is higher than the crystal guiding transition surface, and the gap between the upper support bar for the movement of the crystal body and the crystal guiding transition surface is smaller than the width of the front and rear loops of the crystal. When the introduction head and the loading bin are assembled, the lower support bar for the movement of the crystal body and the transition surface of the loading bin are smoothly tangent to each other, and when the introduction head and the loading bin are assembled, the gap between the front loop anti-slip groove of the crystal and the rear end face of the introduction head is smaller than the width of the front and rear loops of the crystal.

10. The detachable semi-preassembled intraocular lens implant system according to claim 9, characterized in that: The card slot one is arranged on one left side, one right side or both left and right sides of the rear end of the introduction head, and the card slots one arranged on the left and right sides have different lengths.

Images