A disposable, folded introducer tip intraocular lens injector

Abstract

This invention discloses a disposable foldable implantable intraocular lens (IOL) implanter. The implantable head is installed at the front end of the injector body and includes a movable flap, a fixed flap, and a folded lens portion. The folded lens portion is located at the front end of the central axis of the implantable head, the fixed flap is located at the rear end of the folded lens portion and connected to it, and the movable flap is located to the right of the fixed flap. The movable flap and the fixed flap are connected by a folding plate, and the movable flap can rotate based on the folding plate. The inner cavity of the folded lens portion includes a tail end and a tip end. The movable flap has a pre-loading groove for the lens near the central axis, and the fixed flap has a pre-loading groove for the lens near the central axis. The diameter of the pre-loading groove for the movable flap is less than or equal to the diameter of the tail end of the inner cavity of the folded lens portion. This invention is ingeniously designed, easy to operate, easy to insert but difficult to remove, prevents reuse, and is less likely to damage the lens when folded. When the lens passes through the inner cavity of the implantable head, it is less likely to scratch the lens, thus improving safety.

Description

Technical Field

[0001] This invention relates to the field of intraocular lens technology, and more particularly to a disposable foldable implantable intraocular lens implanter. Background Technology

[0002] Currently, cataracts are the leading cause of blindness in my country, and the most effective treatment is phacoemulsification combined with intraocular lens implantation. Intraocular lens implantation surgery has also undergone significant changes with the development of lens material technology. Currently, the main method for implanting intraocular lenses is implantation using an implanter, which involves folding and compressing the intraocular lens before implanting it into the patient's eye. However, existing folded inlet-type intraocular lens implanters still have many defects during the implantation process, such as: (1) The inlet-type ... (6) Before injection, the lens is easy to fall out of the folded implantation head, and the folded implantation head is easy to damage the lens when folded. (7) The implantation head is easy to remove from the injector, which cannot guarantee the product's ability to be used again. Therefore, it is urgent to develop a disposable folded implantation head type intraocular lens implanter to solve the above 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 a disposable foldable implantable intraocular lens implanter with an ingenious design and convenient operation. The implantable head is easy to insert but difficult to remove, preventing reuse. It is also less likely to damage the lens when folded, and less likely to scratch the lens when it passes through the inner cavity of the implantable head, thus providing higher safety and broad application prospects, which is conducive to its widespread application.

[0005] To achieve the above objectives, the present invention provides a disposable foldable implantable intraocular lens implanter, comprising an injector body and an implantable head. The implantable head is mounted at the front end of the injector body. The implantable head includes a movable flap, a fixed flap, and a lens folding portion. The lens folding portion is located at the front end of the central axis of the implantable head. The fixed flap is located at the rear end of the lens folding portion and is connected to the lens folding portion; the two are immovable. The movable flap is located to the right of the fixed flap and is connected to the fixed flap via a folding plate. The movable flap is rotatable based on the folding plate. The inner cavity of the lens folding portion includes a rear end and a tip. The movable flap lens is located near the central axis of the movable flap. The fixed petal has a pre-loading groove near its central axis. The fixed petal and the moving petal are connected by a folding plate to form a complete circular cavity. The circular cavity is used for crystal pre-folding. When the moving petal and the fixed petal are fully folded, the fixed petal crystal pre-loading groove and the end of the inner cavity of the folded part are smoothly and concentrically connected. The circular cavity and the end of the inner cavity of the folded part cooperate to form an inner cavity channel. The diameter difference between the moving petal crystal pre-loading groove and the end of the inner cavity of the folded part is a positive step difference or no step difference. That is, the diameter of the moving petal crystal pre-loading groove is less than or equal to the diameter of the end of the inner cavity of the folded part. The closer the step difference is to 0, the better the smooth connection effect and the smoother the crystal injection.

[0006] Preferably, the inner rear end edge of the movable petal is provided with an opening handle groove, the front end of the opening handle groove is provided with a glue dispensing port recess, the inner side of the glue dispensing port recess is provided with a glue dispensing port, the opening handle groove and the glue dispensing port recess are located on the same plane, which facilitates mold demolding, the rear end of the movable petal crystal pre-assembly groove is provided with an anti-crystal rear loop unfolding platform, the edge of the movable petal crystal pre-assembly groove is provided with a crystal pre-assembly folding anti-detachment groove, a buckle is provided between the movable petal crystal pre-assembly groove and the opening handle groove, and the front end of the movable petal is provided with a disassembly blocking surface.

[0007] Preferably, the inner rear end edge of the fixed petal is provided with an opening handle groove two, which forms a combined groove with the opening handle groove one, facilitating opening and operation when the moving petal and the fixed petal are opened. The front end of the opening handle groove two is provided with a dispensing port two recessed groove, and the inner side of the dispensing port two recessed groove is provided with another dispensing port. The second dispensing port and the first dispensing port form a double dispensing port. This double dispensing port design facilitates uniform flow of liquid material, reduces injection pressure, and ensures that the front end of the guide head is free of burrs and material shortages. To address injection molding defects, the two dispensing ports are recessed into the two recessed grooves, respectively. This conceals the dispensing port of the inlet head, preventing scratches to the user and enhancing the appearance of the inlet head product. The two opening handle grooves are located on the same plane as the two recessed grooves, facilitating mold demolding. The rear end of the fixed-lobe crystal pre-assembly groove is equipped with a second anti-crystal rear loop unfolding platform. This second platform cooperates with the first anti-crystal rear loop unfolding platform to prevent the crystal rear loop from rebounding after folding. To prevent the crystal from protruding straight out after injection and to prevent the crystal body from detaching from the rear end of the inlet head, the edge of the fixed-petal crystal pre-loading slot is provided with a second crystal pre-loading folding anti-detachment groove. The crystal is pre-loaded on the fixed-petal crystal pre-loading slot and the moving-petal crystal pre-loading slot. The second and first crystal pre-loading folding anti-detachment grooves lock the edge of the crystal body to prevent the crystal from detaching. When folding the moving-petal and fixed-petal, it prevents the moving-petal and fixed-petal from damaging the crystal. A locking groove is provided between the fixed-petal crystal pre-loading slot and the second opening handle groove. The locking groove engages with the buckle, so that the fixed-petal crystal pre-loading slot and the moving-petal crystal pre-loading slot form a uniform circular cavity, which is conducive to the movement of the crystal in the fixed-petal crystal pre-loading slot and the moving-petal crystal pre-loading slot. The middle of the outer side of the fixed-petal is provided with a second anti-slip groove. The second anti-slip groove and the first anti-slip groove work together to ensure the anti-slip effect. The rear end of the outer side of the fixed-petal is provided with a second guide groove near the central axis. The front end of the fixed-petal is provided with a first disassembly blocking surface.

[0008] Preferably, the injector body includes a sleeve, a push rod, a silicone head, and a spring. The push rod is located on the central axis inside the sleeve and can move back and forth on the central axis of the sleeve, but cannot move left and right or rotate. The silicone head is installed at the front end of the push rod, and the spring is sleeved on the push rod at the rear end of the silicone head. The front end of the sleeve is provided with an inlet head mounting groove for fixing the inlet head, which can securely fix the inlet head on the sleeve, ensuring the stability and success rate of injecting crystals. The front end of the inlet head mounting groove is provided with two symmetrical inlet head fixing protrusions. The rear ends of the two inlet head fixing protrusions are provided with two symmetrical disassembly blocking surfaces. The two symmetrical disassembly blocking surfaces cooperate with disassembly blocking surfaces three and one. After the inlet head is installed with the injector body, the disassembly blocking surfaces two prevent the inlet head from moving forward. The inlet head cannot be disassembled without tools, preventing secondary use.

[0009] Preferably, after the movable and fixed flaps are fully folded, they smoothly pass through the guide head fixing protrusion under the guidance of guide groove one and guide groove two. The distance between the tips of the two guide head fixing protrusions is greater than the size of the tail end position after guide groove one and guide groove two are engaged, and the difference between the two is 0.05-0.2mm, which is conducive to the insertion of the guide head into the sleeve. The distance formed by the outer plane of the movable flap and the outer plane of the fixed flap is a transition connection with the front end of guide groove one and guide groove two. The distance formed by the outer plane of the movable flap and the outer plane of the fixed flap is greater than the distance between the tips of the two guide head fixing protrusions. After the guide head is fully inserted into the guide head mounting groove, the guide head fixing protrusion can prevent the guide head from falling out.

[0010] Preferably, the buckle is a trapezoidal protrusion, the slot is a trapezoidal groove, the buckle and the slot are interference fit, the long side dimension of the trapezoidal protrusion of the buckle is larger than the short side dimension of the trapezoidal groove of the slot, the difference between the two dimensions is 0.15-0.3mm, the long side dimension of the trapezoidal groove of the slot is larger than the long side dimension of the trapezoidal protrusion of the buckle, the height dimension of the trapezoidal groove of the slot is larger than the height dimension of the trapezoidal protrusion of the buckle, the gap between the two is 0.1-0.3mm, and the positive difference in diameter between the pre-installed slot of the moving lobe crystal and the tail end of the inner cavity of the folded part is 0-0.15mm.

[0011] Preferably, the moving petal, the fixed petal, and the crystal folding portion are integrally injection molded.

[0012] Preferably, the maximum unfolding angle between the moving lobe and the fixed lobe is 90°.

[0013] Preferably, the thickness of the folding piece is 0.3-0.5mm. If the folding piece is too thin, it will not be strong enough and will easily break. If the folding piece is too thick, it will be difficult or impossible to fold.

[0014] Preferably, the height of the first and second anti-crystal rear loop unfolding platforms is 0.1-0.2mm, which does not affect the back-and-forth movement of the silicone head.

[0015] The present invention provides a disposable foldable implantable intraocular lens implanter with the following beneficial effects.

[0016] 1. After the movable and fixed flaps of the present invention are fully folded, they can smoothly pass through the guide head fixing protrusion under the guidance of guide groove one and guide groove two. The distance between the tips of the two guide head fixing protrusions is greater than the size of the tail end position after guide groove one and guide groove two are engaged. The difference between the two is between 0.05mm and 0.2mm, which is conducive to the insertion of the guide head into the sleeve. The distance formed by the outer plane of the movable flap and the outer plane of the fixed flap is a transition connection with the front end of guide groove one and guide groove two. The distance formed by the outer plane of the movable flap and the outer plane of the fixed flap is greater than the distance between the tips of the two guide head fixing protrusions. After the guide head is fully inserted into the guide head mounting groove, the guide head fixing protrusion can prevent the guide head from falling out.

[0017] 2. When the difference between the diameter of the pre-installed slot of the moving lobe crystal and the diameter of the tail end of the inner cavity of the folded part is a positive step or no step, that is, when the diameter of the pre-installed slot of the moving lobe crystal is less than or equal to the diameter of the tail end of the inner cavity of the folded part, the step difference is close to 0. The smoother the transition and the smoother the crystal is pushed in.

[0018] 3. The front end of the opening handle groove of the present invention is provided with a dispensing port 2 sinking groove. The dispensing port 2 sinking groove is provided with a dispensing port 2 inside. The dispensing port 2 and the dispensing port 1 form a double dispensing port. The double dispensing port design is conducive to the uniform flow of liquid material, reduces injection pressure, and ensures that there are no injection defects such as burrs or missing material at the front end of the guide head.

[0019] 4. The second dispensing port and the first dispensing port of the present invention are respectively submerged in the second dispensing port sinking groove and the first dispensing port sinking groove, which can hide the dispensing port of the inlet head, prevent scratching the user, and make the inlet head product more aesthetically pleasing.

[0020] 5. The second anti-crystal rear loop unfolding stage of the present invention, in conjunction with the first anti-crystal rear loop unfolding stage, can not only prevent the crystal rear loop from rebounding after folding, but also prevent the crystal body from falling out from the rear end of the inlet head.

[0021] 6. The fixed-lobe crystal pre-loading groove of the present invention is provided with a crystal pre-loading folding anti-detachment groove two at its edge. The crystal is pre-loaded on the fixed-lobe crystal pre-loading groove and the moving-lobe crystal pre-loading groove. The artificial crystal pre-loading folding anti-detachment groove two and the crystal pre-loading folding anti-detachment groove one can lock the edge of the crystal body to prevent the artificial crystal from falling out. When folding the moving-lobe and the fixed-lobe, the moving-lobe and the fixed-lobe are prevented from damaging the crystal. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a disposable foldable implantable intraocular lens implanter provided by the present invention;

[0023] Figure 2 A schematic diagram of artificial lens injection;

[0024] Figure 3 This is a schematic diagram of the main body of the injector;

[0025] Figure 4 This is a schematic diagram of the inner structure of the inlet head;

[0026] Figure 5 This is a schematic diagram of the outer structure of the inlet head;

[0027] Figure 6 This is the front view of the import header;

[0028] Figure 7 for Figure 6 Enlarged views of points I and II;

[0029] Figure 8 This is a schematic diagram showing the engagement of the latch and slot of the inlet head;

[0030] Figure 9 A schematic diagram showing the positive step difference between the circular groove cavity formed by the fixed-lobe crystal pre-assembly groove and the moving-lobe crystal pre-assembly groove and the crystal folding part.

[0031] Figure 10 A schematic diagram showing the seamless fit between the circular groove cavity formed by the fixed-lobe crystal pre-assembly groove and the moving-lobe crystal pre-assembly groove and the crystal folding part;

[0032] Figure 11 To import the front view of the head fold after it has been folded;

[0033] Figure 12 for Figure 11 AA cross-section view;

[0034] Figure 13 This is a schematic diagram of the structure of an artificial crystal;

[0035] Figure 14 Top view of the unfolded loop of the preloaded intraocular lens insertion head;

[0036] Figure 15 Front view of the unfolded loop of the preloaded intraocular lens insertion head;

[0037] Figure 16 Top view of the folded loop for preloading the intraocular lens;

[0038] Figure 17 A schematic diagram of the folded flap of the implantation head after the artificial lens is loaded;

[0039] Figure 18 This is a schematic diagram of the inlet head and the injector body before loading.

[0040] Figure 19 This is a schematic diagram showing the inlet head and injector body after loading.

[0041] In the picture:

[0042] 1. Moving flap 101. Open handle slot 102. Glue outlet 103. Moving flap crystal pre-installation slot 104. Buckle 105. Glue outlet 1 recessed groove 106. Anti-crystal rear loop unfolding platform 107. Guide groove 108. Anti-slip groove 109. Crystal pre-installation folding anti-detachment groove 110. Folding piece 111. Removal blocking surface 3 2. Fixing flap 201. Open handle slot 202. Glue outlet 203. Fixing flap crystal pre-installation slot 204. Buckle 205. Glue outlet 2 recessed groove 206. Anti-crystal rear 207. Loop unfolding platform 208. Guide groove 209. Anti-slip groove 2000. Pre-installed crystal folding anti-detachment groove 210. Removal blocking surface 1 3. Crystal folding part 301. Tail end of inner cavity of folding part 302. Tip of inner cavity of folding part 4. Artificial crystal 401. Rear loop of crystal 402. Front loop of crystal 403. Crystal body 5. Injector head 6. Injector body 601. Sleeve 602. Push rod 603. Silicone head 604. Spring 605. Injector head mounting groove 606. Injector head fixing protrusion 607. Removal blocking surface 2. Detailed Implementation

[0043] 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.

[0044] like Figures 1-2 The figures shown are schematic diagrams of the structure and injection of a disposable foldable injector-type intraocular lens implanter provided by the present invention. The foldable injector-type intraocular lens implanter includes an injector body 6 and an injector head 5, wherein the injector head 5 is mounted at the front end of the injector body 6. Figures 4-8The figures shown are a schematic diagram of the inner structure of the inlet head, a schematic diagram of the outer structure, a front view, enlarged views at points I and II of the front view, and a schematic diagram of the snap-fit ​​engagement of the inlet head. The inlet head 5 includes a movable petal 1, a fixed petal 2, and a crystal folding part 3, all integrally injection molded. The crystal folding part 3 is located at the front end of the central axis of the inlet head 5, and the fixed petal 2 is located at the rear end of the crystal folding part 3 and connected to it; the two are immovable. The movable petal 1 is located to the right of the fixed petal 2, and the movable petal 1 and the fixed petal 2 are connected by a folding piece 110. The movable petal 1 is rotatable based on the folding piece 110, and the maximum unfolding angle between the movable petal 1 and the fixed petal 2 is 90°. The thickness of the folding piece 110 is 0.3-0.5 mm. If the folding piece 110 is too thin, its strength is insufficient and it is prone to breakage; if it is too thick, folding the folding piece 110 is difficult or impossible. The inner cavity of the crystal folding part 3 includes a tail end 301 and a tip end 302. The moving petal 1 is provided with a moving petal crystal pre-assembly groove 103 near the central axis. The fixed petal 2 is provided with a fixed petal crystal pre-assembly groove 203 near the central axis. The fixed petal 2 and the moving petal 1 are connected by a folding piece 110 so that the fixed petal crystal pre-assembly groove 203 and the moving petal crystal pre-assembly groove 103 form a complete circular groove cavity. The circular groove cavity is used for crystal pre-folding.

[0045] The inner rear end edge of the movable petal 1 is provided with an opening handle groove 101. The front end of the opening handle groove 101 is provided with a glue dispensing port recess 105. The inner side of the glue dispensing port recess 105 is provided with a glue dispensing port 102. The opening handle groove 101 and the glue dispensing port recess 105 are located on the same plane, which facilitates mold demolding. The rear end of the movable petal crystal pre-assembly groove 103 is provided with an anti-crystal rear loop unfolding platform 106. The edge of the movable petal crystal pre-assembly groove 103 is provided with a crystal pre-assembly folding anti-detachment groove 109. A buckle 104 is provided between the movable petal crystal pre-assembly groove 103 and the opening handle groove 101.

[0046] The fixed petal 2 has an opening handle groove 201 at its inner rear end edge. The opening handle groove 201 and the opening handle groove 101 form a combined groove, facilitating opening and operation when the moving petal 1 and the fixed petal 2 are open. The front end of the opening handle groove 201 has a dispensing port 2 recessed groove 205. The dispensing port 202 is located inside the dispensing port 2 recessed groove 205. The dispensing port 202 and the dispensing port 102 form a double dispensing port. The double dispensing port design facilitates uniform flow of liquid material, reduces injection pressure, and ensures that the front end of the inlet head 5 is free of injection defects such as burrs and missing material. The dispensing port 202 and the dispensing port 102 are respectively recessed into the groove. The two dispensing ports are recessed into grooves 205 and 105, respectively, which can conceal the dispensing port of the inlet head 5, preventing scratches to the user and making the inlet head 5 more aesthetically pleasing. The second opening handle groove 201 and the second dispensing port recess 205 are located on the same plane, facilitating mold demolding. The rear end of the fixed-lobe crystal pre-assembly groove 203 is provided with a second anti-crystal rear loop unfolding platform 206. The second anti-crystal rear loop unfolding platform 206 cooperates with the first anti-crystal rear loop unfolding platform 106 to prevent the crystal rear loop 401 from rebounding after folding, preventing the crystal rear loop 401 from straight out after the crystal is pushed in, and also preventing the crystal body 403 from coming out of the rear end of the inlet head 5. Figure 14 The diagram shows a schematic of the intraocular lens (IOL). The IOL 4 includes a rear lens haptic 401, a front lens haptic 402, and a lens body 403. The rear lens haptic 401 and the front lens haptic 402 are centrally symmetrically distributed on both sides of the lens body 403. The height of the two rear lens haptic unfolding platforms 106 and 206 is 0.1-0.2 mm, which does not affect the back-and-forth movement of the silicone tip 603. The edge of the fixed-lobe crystal pre-loading slot 203 is provided with a crystal pre-loading folding anti-detachment groove 209. The crystal is pre-loaded on the fixed-lobe crystal pre-loading slot 203 and the moving-lobe crystal pre-loading slot 103. The crystal pre-loading folding anti-detachment groove 209 and the crystal pre-loading folding anti-detachment groove 109 lock the edge of the crystal body 403 to prevent the crystal from falling out. When folding the moving lobe 1 and the fixed lobe 2, it prevents the moving lobe 1 and the fixed lobe 2 from damaging the crystal. The fixed-lobe crystal pre-loading slot 203 and the opening handle groove 201 are connected. A slot 204 is provided between the fixed petal crystal pre-installation slot 203 and the moving petal crystal pre-installation slot 103, so that the fixed petal crystal pre-installation slot 203 and the moving petal crystal pre-installation slot 103 form a uniform circular cavity, which is conducive to the movement of the crystal in the fixed petal crystal pre-installation slot 203 and the moving petal crystal pre-installation slot 103. A second anti-slip groove 208 is provided in the middle of the outer side of the fixed petal 2. The second anti-slip groove 208 and the first anti-slip groove 108 work together to ensure the anti-slip effect. A second guide groove 207 is provided at the rear end of the outer side of the fixed petal 2 near the central axis.

[0047] The buckle 104 is a trapezoidal protrusion, and the slot 204 is a trapezoidal groove. The buckle 104 and the slot 204 are interference fits. The longer side of the trapezoidal protrusion of the buckle 104 is larger than the shorter side of the trapezoidal groove of the slot 204, with a difference of 0.15-0.3 mm. The longer side of the trapezoidal groove of the slot 204 is larger than the longer side of the trapezoidal protrusion of the buckle 104. The height of the trapezoidal groove of the slot 204 is larger than the height of the trapezoidal protrusion of the buckle 104, with a gap of 0.1-0.3 mm. The diameter difference between the pre-installed crystal slot 103 of the moving lobe and the tail end 301 of the inner cavity of the folded part is 0-0.15 mm. Figures 14-17 The figures shown are a top view and a front view of the pre-loaded intraocular lens (IOL) insertion head without folded loops, a top view of the pre-loaded IOL insertion head with folded loops, and a schematic diagram of the folded flaps of the insertion head after IOL loading.

[0048] like Figure 3 The diagram shows the structure of the injector body 6. The injector body 6 includes a sleeve 601, a push rod 602, a silicone head 603, and a spring 604. The push rod 602 is located on the central axis inside the sleeve 601 and can move back and forth along this axis, but cannot move left or right or rotate. The silicone head 603 is mounted on the front end of the push rod 602. The spring 604 is sleeved on the push rod 602 and located at the rear end of the silicone head 603. The front end of the sleeve 601 has an inlet head mounting groove 605 for fixing the inlet head 5, ensuring a secure fixation of the inlet head 5 to the sleeve 601. To ensure the stability and success rate of crystal injection, the inlet head mounting groove 605 has two symmetrical inlet head fixing protrusions 606 at its front end. At the rear end of the two inlet head fixing protrusions 606 are two symmetrical disassembly blocking surfaces 607. These two symmetrical disassembly blocking surfaces 607 cooperate with disassembly blocking surfaces 111 and 210. After the inlet head is installed with the injector body, the disassembly blocking surfaces 607 prevent the inlet head from moving forward, making it impossible to disassemble without tools and preventing reuse. The moving petal 1 has a disassembly blocking surface 111 at its front end, and the fixed petal 2 has a disassembly blocking surface 210 at its front end. Figures 18-19 The figures shown are schematic diagrams of the inlet head and the injector body before and after loading, respectively.

[0049] like Figures 11-12The figures show the front view and AA cross-sectional view of the folded flaps of the inlet head, respectively. After the movable flap 1 and the fixed flap 2 are fully folded, they smoothly pass through the inlet head fixing protrusion 606 under the guidance of the guide groove 107 and the guide groove 207. The distance between the tips of the two inlet head fixing protrusions 606 is greater than the size of the tail end position after the guide groove 107 and the guide groove 207 are engaged. The difference between the two is 0.05-0.2mm, which is conducive to the insertion of the inlet head into the sleeve 601. The distance formed by the outer plane of the movable flap 1 and the outer plane of the fixed flap 2 is a transition connection with the front end of the guide groove 107 and the guide groove 207. The distance formed by the outer plane of the movable flap 1 and the outer plane of the fixed flap 2 is greater than the distance between the tips of the two inlet head fixing protrusions 606. After the inlet head 5 is fully inserted into the inlet head mounting groove 605, the inlet head fixing protrusion 606 can prevent the inlet head 5 from falling out.

[0050] When the moving lobe 1 and the fixed lobe 2 are fully folded, the fixed lobe crystal pre-installation groove 203 is smoothly and concentrically connected to the tail end 301 of the inner cavity of the folded part. The circular groove cavity and the tail end 301 of the inner cavity of the folded part cooperate to form an inner cavity channel.

[0051] When there is no difference in diameter between the pre-installed slot 103 of the movable flap lens and the tail end 301 of the inner cavity of the folded part, that is, when the diameter of the pre-installed slot 103 of the movable flap lens is equal to the diameter of the tail end 301 of the inner cavity of the folded part, this is the ideal state. The artificial lens 4 passes through this cavity smoothly without causing damage. Figure 10 The diagram shows a circular groove cavity formed by the fixed-lobe crystal pre-assembly groove 203 and the moving-lobe crystal pre-assembly groove 103, which fits into the crystal folding part without any step difference.

[0052] When the diameter difference between the pre-loading groove 103 of the moving lobe crystal and the tail end 301 of the folded cavity is a positive step, that is, when the diameter of the pre-loading groove 103 of the moving lobe crystal is smaller than the diameter of the tail end 301 of the folded cavity, the tail end 301 of the folded cavity will not protrude beyond the step when the crystal passes through this cavity, and will not obstruct the artificial lens 4. This structural step will not scratch the crystal. Figure 9 The diagram shows a positive step difference in the circular groove cavity formed by the fixed-lobe crystal pre-assembly groove 203 and the moving-lobe crystal pre-assembly groove 103, which is fitted with the crystal folding part.

[0053] When the difference between the diameter of the moving lobe crystal pre-loading groove 103 and the diameter of the end 301 of the inner cavity of the folded part is a positive step difference or no step difference, that is, the diameter of the moving lobe crystal pre-loading groove 103 is less than or equal to the diameter of the end 301 of the inner cavity of the folded part, the step difference is close to 0. The smoother the transition and the smoother the crystal is pushed in.

[0054] 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. A disposable foldable implantable intraocular lens implanter, characterized in that, The device includes an injector body and an inlet head. The inlet head is mounted at the front end of the injector body and includes a moving flap, a fixed flap, and a crystal folding section. The crystal folding section is located at the front end of the inlet head's central axis, and the fixed flap is located at the rear end of the crystal folding section and connected to it; the two are immovable. The moving flap is located to the right of the fixed flap and is connected to it via a folding plate. The moving flap is rotatable based on the folding plate. The inner cavity of the crystal folding section includes a rear end and a tip. The moving flap has a crystal pre-loading groove near the central axis, and the fixed flap has a pre-loading groove near the central axis. A fixed-lobe crystal pre-loading groove is provided. The fixed lobe and the movable lobe are connected by a folding piece to form a complete circular cavity. This circular cavity is used for crystal pre-folding. When the movable lobe and the fixed lobe are fully folded, the fixed-lobe crystal pre-loading groove smoothly transitions to the end of the inner cavity of the folded part, forming an inner cavity channel. The diameter of the movable lobe crystal pre-loading groove is less than or equal to the diameter of the end of the inner cavity of the folded part. After the movable lobe and the fixed lobe are fully folded, under the guidance of guide groove one and guide groove two, the crystal smoothly passes through the guide head fixing protrusion. The two guide heads are then fixed. The distance between the protruding tips is greater than the dimension of the very end position after guide groove one and guide groove two are fitted together, with a step difference of 0.05-0.2mm. The distance formed by the outer plane of the moving flap and the outer plane of the fixed flap is a transition connection with the front end of guide groove one and guide groove two. The distance formed by the outer plane of the moving flap and the outer plane of the fixed flap is greater than the distance between the two guide head fixed protruding tips. An opening handle groove two is provided at the inner rear end edge of the fixed flap. The opening handle groove two and the opening handle groove one form a merged groove. The front end of the opening handle groove two is provided with a glue dispensing port two recessed groove. A glue dispensing port two recessed groove is provided inside the glue dispensing port two recessed groove. Second, the second dispensing port and the first dispensing port form a double dispensing port. The second dispensing port and the first dispensing port are respectively submerged in the second dispensing port sinking groove and the first dispensing port sinking groove. The rear end of the moving petal crystal pre-assembly groove is provided with an anti-crystal rear loop unfolding platform 1. The rear end of the fixed petal crystal pre-assembly groove is provided with an anti-crystal rear loop unfolding platform 2. The anti-crystal rear loop unfolding platform 2 cooperates with the anti-crystal rear loop unfolding platform 1. The edge of the fixed petal crystal pre-assembly groove is provided with a crystal pre-assembly folding anti-detachment groove 2. The crystal is pre-loaded on the fixed petal crystal pre-assembly groove and the moving petal crystal pre-assembly groove. The crystal pre-assembly folding anti-detachment groove 2 and the crystal pre-assembly folding anti-detachment groove 1 lock the edge of the crystal body.

2. The disposable, foldable, lead-in head intraocular lens inserter according to claim 1, wherein The inner rear edge of the movable flap is provided with an opening handle groove, the front end of the opening handle groove is provided with a glue dispensing port recess, the inner side of the glue dispensing port recess is provided with a glue dispensing port, the opening handle groove and the glue dispensing port recess are located on the same plane, the edge of the movable flap crystal pre-assembly groove is provided with a crystal pre-assembly folding anti-detachment groove, a buckle is provided between the movable flap crystal pre-assembly groove and the opening handle groove, and the front end of the movable flap is provided with a disassembly blocking surface.

3. The disposable, foldable, introducer- tipped, intraocular lens inserter of claim 2, wherein: The second opening handle groove and the second dispensing port recess are located on the same plane. A slot is provided between the fixed-lobe crystal pre-installation groove and the second opening handle groove. The slot engages with the buckle, so that the fixed-lobe crystal pre-installation groove and the moving-lobe crystal pre-installation groove form a uniform circular cavity. The middle of the outer side of the fixed lobe is provided with an anti-slip groove 2. The anti-slip groove 2 works together with the anti-slip groove 1. The rear end of the outer side of the fixed lobe is provided with a guide groove 2 near the central axis. The front end of the fixed lobe is provided with a disassembly blocking surface 1.

4. The disposable, foldable, lead-in head intraocular lens inserter according to claim 3, wherein The injector body includes a sleeve, a push rod, a silicone head, and a spring. The push rod is located on the central axis inside the sleeve and can move back and forth on the central axis of the sleeve, but cannot move left and right or rotate. The silicone head is installed at the front end of the push rod, and the spring is sleeved on the push rod and located at the rear end of the silicone head. The front end of the sleeve has an inlet head mounting groove for fixing the inlet head. The front end of the inlet head mounting groove has two symmetrical inlet head fixing protrusions. The rear ends of the two inlet head fixing protrusions have two symmetrical disassembly blocking surfaces. The two symmetrical disassembly blocking surfaces cooperate with disassembly blocking surfaces three and one. After the inlet head is installed with the injector body, the disassembly blocking surfaces two prevent the inlet head from moving forward.

5. The disposable, foldable, introducer- tipped, intraocular lens inserter of claim 4, wherein: The buckle is a trapezoidal protrusion, and the slot is a trapezoidal groove. The buckle and the slot are interference fit. The long side of the trapezoidal protrusion of the buckle is larger than the short side of the trapezoidal groove of the slot, with a difference of 0.15-0.3mm. The long side of the trapezoidal groove of the slot is larger than the long side of the trapezoidal protrusion of the buckle. The height of the trapezoidal groove of the slot is larger than the height of the trapezoidal protrusion of the buckle, with a gap of 0.1-0.3mm. The diameter difference between the pre-installed crystal slot of the moving lobe and the tail end of the inner cavity of the folded part is 0-0.15mm.

6. The disposable, foldable, introducer- tipped, intraocular lens inserter of claim 5, wherein, The moving petal, the fixed petal, and the crystal folding part are integrally injection molded.

7. The disposable, foldable, introducer- tipped, intraocular lens inserter of claim 6, wherein, The maximum unfolding angle between the moving lobe and the fixed lobe is 90°.

8. The disposable, foldable, introducer- tipped, intraocular lens inserter of claim 7, wherein, The thickness of the folded sheet is 0.3-0.5 mm.

9. The disposable, foldable, introducer- tipped, intraocular lens inserter of claim 8, wherein, The height of the first and second anti-crystal rear loop unfolding platforms is 0.1-0.2 mm.

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