Intraocular lens implanting device and leading-in head

Abstract

The invention discloses an intraocular lens implanting device and a leading-in head. The intraocular lens implanting device comprises the leading-in head and an injector. The lead-in head comprises a pushing and injecting area, a transition area and a loading area, one end of the transition area is communicated with the pushing and injecting area, and the other end is communicated with the loading area; the loading area comprises a bearing part and a bending part; one end of the bearing part is connected with the transition area, the other end of the bearing part is rotationally connected with the bending part, the bearing part and the bending part are respectively provided with a main groove and an auxiliary groove which are used for bearing an artificial lens and an upper supporting loop, and the main grooves are communicated with the auxiliary grooves. The push injector comprises a push rod and an outer cylinder, and the push rod is arranged in the outer cylinder and can slide to the push injection area of the guide-in head along the outer cylinder. The main groove and the auxiliary groove are designed in the loading area of the leading-in head to load the intraocular lens in a partitioned mode, loading is convenient and fast, rotation or overturning is not prone to occurring in the pushing and injecting process, the situation that the intraocular lens is clamped or blocked is reduced, and the intraocular lens can be safely implanted into the human eyes conveniently.

Description

Technical Field

[0001] This invention relates to the field of intraocular lens technology, specifically to an intraocular lens implantation device and its insertion head. Background Technology

[0002] An intraocular lens (IOL) is a man-made lens implanted inside the human eye. Implantation typically involves using a specialized implantation device to insert the IOL into the eye through a minimally invasive incision during surgery. The IOL implantation device usually consists of an introductory tip and an injector. The introductory tip is used to fold and roll up the IOL, reducing its volume and thus the surgical incision area. The injector pushes the folded and rolled-up IOL out of the introductory tip and into the eye, where it unfolds to its original shape at the target location.

[0003] Existing intraocular lens (IOL) implantation devices, such as existing IOL implantation systems with detachable guide tips, have cylindrical or frustum-shaped guide grooves within the guide tip. Because IOLs typically have a support haptic structure, they are prone to rotation or flipping during injection. This can lead to multiple folds or high internal stress, resulting in excessive clamping or jamming of the IOL. Consequently, during implantation, the IOL may deviate from the intended implantation direction, requiring secondary repositioning within the eye, increasing surgical risks and operational difficulty. Furthermore, in existing detachable guide tip implantation systems, the protruding hinge structure on the guide tip is located at the front of the field of vision, which can directly affect or interfere with the surgical field, increasing the risks associated with the implantation procedure. Summary of the Invention

[0004] The purpose of this invention is to provide an intraocular lens implantation device that can effectively avoid excessive clamping during intraocular lens implantation, which can cause the intraocular lens to rotate or flip, thus deviating from the intended implantation direction. Another purpose of this invention is to provide an insertion head that can be used in conjunction with this device.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention provides an implant tip for an intraocular lens implantation device, comprising: The injection zone is used to guide the intraocular lens into the human eye; A transition zone, one end of which is connected to the injection zone; and A loading region, which communicates with the other end of the transition region, is used to support and curl the intraocular lens; the loading region includes... The supporting part, one end of which is connected to the transition area; and The curved portion is rotatably connected to the other end of the supporting portion; Both the bearing portion and the bending portion are provided with a main groove and a secondary groove, which are connected. Each secondary groove is used to support the support haptic of the artificial lens.

[0006] In the above scheme, when loading the intraocular lens, the curved part and the support part of the introductory head are first laid flat, the support haptic of the intraocular lens is inserted into the sub-groove, and then the curved part and the support part are closed. During the closing process, the intraocular lens also curls accordingly. Since the support haptic is always inserted in the sub-groove, the intraocular lens is not easy to rotate during the implantation process.

[0007] Furthermore, the supporting portion includes a first connector, the bending portion includes a second connector, and the supporting portion and the bending portion achieve a closed state through the cooperation of the first connector and the second connector.

[0008] Furthermore, when the bearing portion and the bending portion are closed, the cross-section formed by the closure of the two main grooves is elliptical, and the width of the major axis of the ellipse is smaller than the width of the intraocular lens; the overall length of the loading area is greater than the overall length of the intraocular lens.

[0009] Furthermore, when the bearing portion and the bending portion are closed, the overall cross-section formed by the closure of the two main grooves and the two auxiliary grooves is heart-shaped.

[0010] Furthermore, the main groove includes a through groove and a gradient groove that are connected to each other. The through groove is connected to the transition zone, and the gradient groove is located on the port side near the loading zone. The cross-sectional area of ​​the gradient groove gradually decreases in the direction of the through groove.

[0011] Furthermore, the internal cross-section of the injection area is elliptical, and the injection area includes a connected opening and an injection channel, which is connected to the transition area; a guide strip is provided in the injection channel to restrict the position of the intraocular lens within the injection channel.

[0012] Furthermore, a gradient hole is provided inside the transition zone. One end of the gradient hole is connected to the main groove and the secondary groove respectively, and the other end of the gradient hole is connected to the injection channel.

[0013] Furthermore, when the supporting part and the curved part are closed, the guide strip is smoothly connected to the main groove, and the height of the guide strip gradually increases towards the transition zone.

[0014] Furthermore, the end of the opening away from the loading area is provided with an oblique cut, and the angle between the plane of the oblique cut and the longitudinal section of the opening is 40° to 45°.

[0015] Furthermore, when the supporting part and the bending part are closed, the first connector and the second connector are located on the short end side of the oblique cut.

[0016] This invention provides an intraocular lens implantation device, comprising: the aforementioned guide head for intraocular lens implantation; The injector includes: The outer cylinder has a snap-fit ​​groove at one end for detachably connecting the inlet head; and A push rod, which is disposed inside the outer cylinder and can slide along the outer cylinder to the injection area of ​​the inlet head, injects the intraocular lens into the human eye.

[0017] In this solution, when the carrier part of the inlet head is closed with the curved part, the inlet head is engaged with the slot of the injector. The injector pushes the intraocular lens to move towards the injection area. As the intraocular lens moves deeper, it passes through the transition area in sequence and finally enters the eye from the injection area.

[0018] Furthermore, the injector also includes a locking cap, which is disposed at the end of the outer cylinder away from the inlet head, and the locking cap is provided with a sliding opening; the push rod includes an insertion section and a sliding section, one end of the insertion section is connected to a flexible part, and the other end is connected to the sliding section; the sliding section is slidably connected to the sliding opening; the flexible part is used to push the intraocular lens out of the inlet head under the push of the insertion section.

[0019] Furthermore, the cross-sectional shape of the sliding section matches the shape of the sliding opening.

[0020] Furthermore, a limiting ring is provided inside the outer cylinder; the push rod also includes a retaining ring disposed between the sliding section and the pushing section, the diameter of the retaining ring being larger than the sliding opening; a spring is sleeved on the outside of the push rod, the spring being disposed between the limiting ring and the retaining ring.

[0021] Furthermore, a handle is provided on the periphery of the outer cylinder, and a push plate is provided on the sliding section.

[0022] Preferably, both the handle and the push plate are provided with anti-slip grooves.

[0023] The beneficial effects of the present invention are: (1) The inlet head provided by the present invention can load the intraocular lens in sections by designing a main groove and a secondary groove in the loading area. This ensures that the intraocular lens is not easily rotated or flipped during the injection process, improves the convenience of the loading process, reduces clamping time, and ensures the safe ejection of the intraocular lens.

[0024] (2) The present invention further provides a structure including a through groove and a gradient groove in the main groove of the inlet head, and keeps the overall cross section formed by the two main grooves and two secondary grooves in a heart shape when the bearing part and the bending part are closed, which can better fit the shape of the artificial lens after it is rolled up, and facilitate the accommodation of the support haptic of the artificial lens, so that the artificial lens is not easy to rotate or flip during the introduction of the transition zone.

[0025] (3) By setting a guide strip in the injection area of ​​the inlet head, the present invention can ensure that the intraocular lens can be steadily pushed along the axial direction in a preset state during injection, so as to ensure that the intraocular lens is not easy to rotate or flip after being pushed out; during the injection operation, the flexible part is used to contact the intraocular lens, which effectively avoids the problem of damage caused by contact between hard parts and the intraocular lens.

[0026] (4) The introductory head of the present invention has an oblique incision at the end of its injection area away from the loading area, and ensures that the bearing part and the bending part are in the closed state, and the first connector and the second connector are on the short end side of the oblique incision, so that the injection process will not directly affect or interfere with the surgical field of view, thereby improving the implantation success rate.

[0027] (5) The present invention further provides a spring and a retaining ring between the outer cylinder of the implantation device and the push rod, so that the push rod can be reset when the position and shape of the artificial lens are repeatedly pushed and pulled to adjust, thereby ensuring the tactile experience and stability of the injection operation. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of the intraocular lens implantation device disclosed in this invention.

[0029] Figure 2 This is a schematic diagram of the overall structure of the import head disclosed in this invention.

[0030] Figure 3 This is a schematic diagram of the supporting part and the bending part of the inlet head disclosed in this invention.

[0031] Figure 4 This is a schematic diagram of the main groove and through groove structure of the inlet head disclosed in this invention.

[0032] Figure 5 This is a schematic diagram of the closed state of the first connector and the second connector of the inlet head disclosed in this invention.

[0033] Figure 6 This is a schematic diagram of the heart-shaped cross-section formed by the closure of the main groove and the secondary groove of the inlet head disclosed in this invention.

[0034] Figure 7 This is a schematic diagram of a portion of the internal structure of the inlet head disclosed in this invention.

[0035] Figure 8 This is a schematic diagram of the internal structure of the intraocular lens implantation device disclosed in this invention.

[0036] The meanings of the annotations in the attached diagram are as follows: 1. Import header; 11. Injection zone; 111. Mouth; 1111 Oblique incision; 112. Injection channel; 113. Guide strip; 12. Transition zone; 121. Gradient hole; 13. Loading area; 131. Bearing part; 132. Bending part; 133. Main groove; 1331. Through groove; 1332. Gradient groove; 134. Secondary groove; 135. First connecting piece; 1351. Locking block; 136. Second connecting piece; 1361. Locking slot; 2. Injector; 21. Outer cylinder; 211. Snap-fit ​​groove; 212. Limiting ring; 213. Handle; 22. Hook and snap cap; 221. Slip-on opening; 23. Push rod; 231. Push section; 232. Sliding section; 2321. Snap ring; 233. Push plate; 24. Flexible section; 25. Spring. Detailed Implementation

[0037] The accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The positional relationships described in the drawings are for illustrative purposes only and should not be construed as limiting this patent.

[0038] In the accompanying drawings of the embodiments of the present invention, the same or similar reference numerals correspond to the same or similar components. In the description of the present invention, it should be understood that if terms such as "upper," "lower," "left," "right," "long," and "short" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting the present patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0039] The technical solution of the present invention will be further described in detail below through specific embodiments and with reference to the accompanying drawings: Example 1 like Figure 1-2As shown, this embodiment provides an intraocular lens implantation device, including an inlet head 1 and an injector 2, wherein the inlet head 1 includes an injection area 11, a transition area 12 and a loading area 13; the injector 2 includes an outer cylinder 21 and an injector rod 23.

[0040] The inlet head 1 is used to load and fold the intraocular lens; the inlet head 1 includes an injection area 11 for inserting the intraocular lens into the eye; a transition area 12, one end of which is connected to the injection area 11 and the other end of which is connected to the loading area 13; the loading area 13 is used to support and curl the intraocular lens; the loading area 13 includes a support portion 131 connected to the transition area 12; and a bending portion 132 rotatably connected to the support portion 131; wherein the support portion 131 and the bending portion 132 are each provided with a main groove 133 and a secondary groove 134, the main groove 133 and the secondary groove 134 of the support portion 131 are connected in a direction perpendicular to the axis of the inlet head, and the main groove 133 and the secondary groove 134 of the bending portion 132 are connected in a direction perpendicular to the axis of the inlet head, wherein each secondary groove 134 is used to support the support haptic of the intraocular lens.

[0041] The outer cylinder 21 of the injector 2 is provided with a snap-fit ​​groove 211 at one end, which is detachably connected to the loading area 13; the push rod 23 is located inside the outer cylinder 21 and slides along the outer cylinder 21 to the inner injection area 11 of the inlet head 1 to inject the intraocular lens into the human eye; the inlet head 1 disclosed in this invention is a relatively independent intraocular lens implantation device, which can be applied to a variety of other injectors that meet the above conditions.

[0042] The working principle of this embodiment is as follows: When an intraocular lens (IOL) needs to be implanted, the curved portion 132 and the supporting portion 131 are first laid flat, and the IOL with the support haptic is inserted into a pair of sub-grooves 134. Then, the curved portion 132 and the supporting portion 131 are closed. During the closing process, the IOL curls synchronously. After the closure is completed, the inlet head 1 is engaged with the locking groove 211 on the injector 2, and then the injector 2 pushes the IOL into the injection area 11. Since the support haptic is always locked in the sub-grooves 134, the IOL will not rotate or flip during its movement in the injection area 11. As the pushing action continues, the IOL gradually moves forward, passes through the transition area 12 in sequence, and is finally implanted into the eye from the injection area 11.

[0043] In this embodiment, the intraocular lens is loaded when the support portion 131 and the bending portion 132 are unfolded, which makes the operation simple and quick and reduces damage to the intraocular lens. By setting a pair of sub-grooves 134, the support haptics of the intraocular lens are restricted in the sub-grooves 134, which prevents the intraocular lens from rotating or flipping during its movement inside the injection area 11.

[0044] Example 2 To prevent rotation or flipping of the intraocular lens during its insertion into the transition zone 12, and to ensure the intraocular lens advances in the intended manner, this method is implemented based on Example 1, combined with... Figure 3 and Figure 4 As shown, as an optional embodiment, the supporting portion 131 includes a first connector 135; the bent portion 132 includes a second connector 136, and the supporting portion 131 and the bent portion 132 are closed by the cooperation of the first connector 135 and the second connector 136. Preferably, the first connector 135 is provided with a locking block 1351, and the second connector 136 is provided with a locking groove 1361. When the supporting portion 131 and the bent portion 132 are closed, the locking block 1351 and the locking groove 1361 are engaged.

[0045] As an alternative solution, such as Figure 5 As shown, with the bearing portion 131 and the bending portion 132 in the closed state, the cross-section formed by the two main grooves 133 is as follows: Figure 5 As shown in b, it is elliptical, and the width of the major axis of the ellipse is as follows: Figure 5 The width of the lens shown in d is smaller than that of the intraocular lens; the overall length of the loading area 13 is greater than the overall length of the intraocular lens.

[0046] As an alternative solution, such as Figure 6 As shown, with the bearing portion 131 and the bending portion 132 closed, the overall cross-section formed by the two main grooves 133 and the two auxiliary grooves 134 is heart-shaped, as... Figure 6 As shown in Figure a, the width of its cross-section is smaller than the width of the intraocular lens; the overall length of the loading area 13 is greater than the overall length of the intraocular lens.

[0047] As an alternative solution, such as Figure 4 As shown, the main groove 133 includes a through groove 1331 and a gradient groove 1332 connected along the axial direction. The through groove 1331 communicates with the transition zone 12, and the gradient groove 1332 is located on the port side near the loading zone 13, with the cross-sectional area of ​​the gradient groove 1332 gradually decreasing towards the through groove 1331. The secondary groove 134 is located on the side near the gradient groove 1332 and communicates with the main groove 133 through the gradient groove 1332.

[0048] The furthest distance between the two secondary grooves 134 of the bearing portion 131 and the bending portion 132 in the flat state (i.e., the widest distance of the gradient groove 1332, such as...) Figure 4 (as shown in h), the width is equal to or slightly smaller than the width of the intraocular lens.

[0049] The working principle of this embodiment is as follows: When the intraocular lens is loaded into the loading area 13, the support haptics on both sides of the intraocular lens are respectively confined within the secondary grooves 134 of the bearing portion 131 and the bending portion 132. Since the cross-sectional area of ​​the gradient groove 1332 gradually decreases towards the through groove 1331, it is more conducive to the stable loading of the intraocular lens. After loading is completed, the locking block 1351 is engaged with the locking groove 1361, so that the bearing portion 131 and the bending portion 132 are closed. After closure, the cross-section formed by the main groove 133 and the secondary groove 134 is heart-shaped. The heart-shaped cross-section design can better fit the curled shape of the intraocular lens, making it easier to accommodate the support haptics of the intraocular lens. This makes it less likely for the intraocular lens to rotate or flip during the process of being introduced into the transition area 12. Furthermore, the gradual reduction in overall size further ensures that the intraocular lens moves forward in the expected state. Next, the first connector 135 and the second connector 136 are closed and then engaged with the locking groove 211, thereby completing the connection between the inlet head 1 and the push rod 23. Based on this, the artificial lens is then injected.

[0050] This embodiment improves the ease of intraocular lens loading by setting a gradient groove 1332, effectively avoiding over-clamping; by setting a slot 1361 to cooperate with the locking block 1351, it prevents the support part 131 and the bending part 132 from separating, thus preventing the intraocular lens from returning to its original shape during bending and avoiding secondary loading operations. The heart-shaped cross-section design can better fit the curled shape of the intraocular lens, making it easier to accommodate the support haptics of the intraocular lens, so that the intraocular lens is less likely to rotate or flip during the introduction of the intraocular lens into the transition zone 12.

[0051] Example 3 To maintain controllable movement of the intraocular lens (IOL) within the injection area 11 using this IOL implantation device, and to reduce the probability of rotation or flipping within the injection area 11, thus preventing damage to the IOL, this method, based on Example 1, combines... Figure 2 and Figure 7 The internal cross-section of the injection zone 11 is set to be elliptical. The injection zone 11 includes a connected opening 111 and an injection channel 112, which communicates with the transition zone 12; Figure 7 As shown, Figure 7 In the middle z, the longitudinal cutting direction of the injection head is indicated. A guide bar 113 is provided in the injection channel 112 to restrict the position of the intraocular lens in the injection channel 112.

[0052] When the bearing portion 131 and the bending portion 132 are closed, the guide strip 113 is smoothly connected to the main groove 133. The width of the guide strip 113 in the injection channel 112 gradually increases towards the transition zone 12, and the height of the guide strip 113 gradually increases towards the transition zone 12.

[0053] The working principle of this embodiment is as follows: During the movement of the intraocular lens in the injection area 11, since the injection area 11 is provided with a guide strip 113, the intraocular lens is restricted by the guide strip 113 during the movement and will move along the guide strip 113. Finally, under the injection action, the intraocular lens is slowly released at the port of mouth 111 and finally implanted into the human eye, and it is not easy to rotate or flip.

[0054] In this embodiment, a guide strip 113 is provided in the transition zone 12 to guide the movement trajectory of the intraocular lens in the injection zone 11, which can prevent rotation or flipping within the injection zone 11. By setting the internal channel of the injection zone 11 which gradually decreases in size, the intraocular lens gradually bends during the injection process, avoiding damage to the intraocular lens due to excessive bending in a short period of time.

[0055] Example 4 To improve the ease of implantation of this intraocular lens implantation device and avoid the direct impact or interference of its guide head 1 on the surgical field of view, thereby affecting the implantation of the intraocular lens, as an optional solution based on Embodiment 3, such as... Figure 3 As shown, a beveled notch 1111 is provided at the end of the opening 111 away from the loading area 13. The angle between the plane of the beveled notch 1111 and the longitudinal section of the opening 111 is as follows: Figure 3 As shown by the midpoint angle θ, angle θ is 40° to 45°. When the supporting part 131 and the bending part 132 are closed, the first connecting member 135 and the second connecting member 136 are at their short ends c (e.g., ...). Figure 3 ) one side.

[0056] An oblique incision 1111 is provided at the front end of the opening 111 to facilitate the insertion of the introductory head 1 into the surgical incision during the operation. When the supporting part 131 and the curved part 132 are closed, the first connector 135 and the second connector 136 are located on the short end side of the oblique incision 1111. During implantation, the short end faces downward, which can ensure that the connection structure between the introductory head 1 and the injector 2 will not directly affect or interfere with the surgical field of vision. Under the action of injection, the artificial lens is slowly released at the port of the opening 111 and finally implanted into the human eye.

[0057] Example 5 To avoid problems such as jamming or lens breakage caused by excessive changes in the internal channel dimensions of the injection area 11 and the loading area 13 in this intraocular lens implantation device, based on Example 1, such as Figure 7 and Figure 8 As shown, as an optional solution, this embodiment further provides a gradient hole 121 inside the transition zone 12. One end of the gradient hole 121 is connected to the through groove 1331 of the secondary groove 134 and the main groove 133, respectively, and the other end of the gradient hole 121 is connected to the injection channel 112 of the injection zone 11.

[0058] The working principle of this embodiment is as follows: Since the cross-sectional area of ​​the inner channel of the injection area 11 is relatively smaller than that of the loading area 13, a gradient hole 121 structure is designed in the transition area 12 between the two to ensure that the intraocular lens can smoothly transition from the loading area 13 to the injection area 11. This allows the intraocular lens to gradually increase its curvature as it passes through the transition area 12, until it matches the shape of the injection area 11 and then enters the injection area 11. By setting the gradient hole 121, the intraocular lens can be ensured to smoothly enter the injection area 11, effectively avoiding problems such as jamming or lens breakage caused by excessive changes in the internal channel size between the injection area 11 and the loading area 13.

[0059] Example 6 To improve the ease of operation and injection accuracy of the injector 2 during use of this intraocular lens implantation device, based on Example 1, and combining... Figure 1 and Figure 8 As an optional embodiment, the injector 2 further includes a locking cap 22, which is located at the end of the outer cylinder 21 away from the inlet head 1. The locking cap 22 has a sliding opening 221. The push rod 23 includes an insertion section 231 and a sliding section 232. One end of the insertion section 231 is connected to a flexible part 24, and the other end is connected to the sliding section 232. The sliding section 232 moves within the outer cylinder 21 via the sliding opening 221. The flexible part 24, pushed by the insertion section 231, is used to push the intraocular lens out of the inlet head 1. Preferably, the cross-sectional shape of the sliding section 232 matches the shape of the sliding opening 221. Preferably, the flexible part is a flexible material component such as rubber.

[0060] As a preferred embodiment, a limiting ring 212 is provided inside the outer cylinder 21; the push rod 23 also includes a retaining ring 2321 disposed between the sliding section 232 and the pushing section 231, the diameter of the retaining ring 2321 being larger than that of the sliding opening 221; a spring 25 is sleeved on the outside of the push rod 23, the spring 25 being disposed between the limiting ring 212 and the retaining ring 2321. The cross-sectional shape of the sliding section 232 matches the shape of the sliding opening 221.

[0061] To facilitate easy operation of the outer cylinder 21 and push rod 23, as an optional solution, a handle 213 is provided on the periphery of the outer cylinder 21, a push plate 233 is provided on the sliding section 232, and anti-slip grooves are provided on the handle 213 and push plate 233.

[0062] The working principle of this embodiment is as follows: After the intraocular lens is loaded into the inlet head 1, the inlet head 1 is engaged with the snap-fit ​​groove 211 on the outer cylinder 21. Then, the push plate 233 is pressed, and the push plate 233 will drive the entire sliding push rod 23 to move along the limiting ring 212. During the movement, the push rod 23 will simultaneously drive the flexible part 24 to push out the intraocular lens in the inlet head 1. After the injection is completed, the push plate 233 is stopped. At the same time, the push rod 23 will be reset under the elastic force of the spring 25 and return to the initial position.

[0063] The beneficial effects of this embodiment are as follows: by setting the spring 25 and the limiting ring 212 to achieve automatic reset of the push rod 23, the ease of operation and injection accuracy are improved; at the same time, the structural design of the sliding port 221 and the retaining ring 2321 can prevent the push rod 23 from rotating circumferentially during the push process, ensuring that the injection process is stable and controllable, and further ensuring the smooth implantation of the artificial lens.

[0064] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An insertion head for an intraocular lens implant device, characterized in that It comprises: a push injection area for guiding an intraocular lens into a human eye; a transition area in communication with one end of the push injection area; and a loading area in communication with the other end of the transition area, the loading area being used for carrying and curling the intraocular lens; the loading area comprises a carrying part connected with one end of the transition area; and a bending part rotationally connected with the other end of the carrying part; wherein the carrying part and the bending part are both provided with a main groove and a secondary groove, the main groove and the secondary groove being in communication, and each of the secondary grooves is used for carrying a haptics of the intraocular lens. The carrying part comprises a first connecting member, and the bending part comprises a second connecting member, and the carrying part and the bending part are closed by cooperation of the first connecting member and the second connecting member. In the closed state of the carrying part and the bending part, the two main grooves are closed to form an elliptical cross section, the long axis of the elliptical shape is smaller than the width of the intraocular lens, and the overall length of the loading area is greater than the overall length of the intraocular lens.

2. The lead-in head for an intraocular lens implant device according to claim 1, characterized in that In the closed state of the carrying part and the bending part, the two main grooves and the two secondary grooves form a whole cross section in the shape of a heart.

3. The lead-in head for an intraocular lens implantation device according to claim 1, characterized in that The main groove comprises a through groove and a gradually changing groove in communication, the through groove is in communication with the transition area, the gradually changing groove is arranged on the side of the port close to the loading area, and the cross-sectional area of the gradually changing groove gradually decreases towards the through groove.

4. The lead-in head for an intraocular lens implant device according to claim 3, characterized in that The push injection area has an elliptical cross section, and the push injection area comprises a port part and a push injection channel in communication, the push injection channel is in communication with the transition area; a guide strip is arranged in the push injection channel to limit the position of the intraocular lens in the push injection channel.

5. The lead-in head for an intraocular lens implant device according to any one of claims 1 to 4, characterized in that The transition area is provided with a gradually changing hole, one end of the gradually changing hole is in communication with the main groove and the secondary groove respectively, and the other end of the gradually changing hole is in communication with the push injection channel.

6. The lead-in head for an intraocular lens implant device according to claim 2, characterized in that In the closed state of the carrying part and the bending part, the guide strip is smoothly connected with the main groove, and the height of the guide strip gradually increases towards the transition area.

7. The lead-in head for an intraocular lens implant device according to claim 6, characterized in that An oblique cut is arranged on the end of the port part away from the loading area, and the angle between the plane of the oblique cut and the longitudinal cross section of the port part is 40° to 45°.

8. The lead-in head for an intraocular lens implant device according to claim 6, characterized in that In the closed state of the carrying part and the bending part, the first connecting member and the second connecting member are located on the short end side of the oblique cut.

9. The lead-in head for an intraocular lens implant device according to claim 6 or 8, characterized in that It comprises:

10. The lead-in head for an intraocular lens implant device according to claim 9, characterized in that the guide head for the intraocular lens implantation device according to any one of claims 1 to 10; 11. An intraocular lens implant device, comprising: a push injector comprising: an outer cylinder provided with a clamping groove at one end for detachably connecting the guide head; and a push rod arranged in the inner part of the outer cylinder and slidable along the outer cylinder to the push injection area of the guide head to push the intraocular lens into the human eye.

12. The intraocular lens implantation device according to claim 11, wherein the push injector further comprises a clamping cap arranged at the end of the outer cylinder away from the guide head, and the clamping cap is provided with a sliding port. ​ ​ ​ The push rod comprises a pushing-in section and a sliding section, one end of the pushing-in section is connected with a flexible part, the other end is connected with the sliding section; the sliding section is in sliding connection with the sliding port; the flexible part is used for pushing the artificial lens out of the guide head under the pushing of the pushing-in section.

13. The intraocular lens implant device of claim 12, wherein, The cross-sectional shape of the sliding section matches the shape of the sliding port.

14. The artificial lens implantation device according to claim 12, characterized in that, The outer cylinder is internally provided with a limiting ring; The push rod further comprises a clamping ring arranged between the sliding section and the pushing-in section, the diameter of the clamping ring is greater than that of the sliding port; The outer part of the push rod is sleeved with a spring, and the spring is arranged between the limiting ring and the clamping ring.

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