Intraocular intraocular lens auxiliary implantation system and assembling method thereof

Abstract

The invention discloses an intraocular intraocular lens auxiliary implanting system and an assembling method thereof. The intraocular intraocular lens auxiliary implanting system comprises a flat plate type leading-in head and a repeatedly-used implanting device. The leading-in head comprises an inner cavity and an external structure, the inner cavity is gradually shrunk from the rear end to the front end to form a smooth free-form surface, and the intraocular lens is folded in the inner cavity according to a designed folding structure; the implantation device comprises a leading-in head loading part at the front end and a pushing and injecting driving mechanism connected with the rear end, the leading-in head loading part comprises a main body, a leading-in head rotating piece, a leading-in head locking piece and a bearing, and the leading-in head locking piece is connected with the leading-in head rotating piece through the bearing. The guide-in head is matched with a repeatedly-used implanter for use, assembly and disassembly are convenient, the implanter is adopted for forward linear press-in type enclasping stress mechanism for assembly, interference tearing deformation cannot be generated on the guide-in head, chippings cannot fall off from the guide-in head, and the fallen chippings can be effectively prevented from entering an inner cavity of the guide-in head.

Description

Technical Field

[0001] The present invention relates to the technical field of artificial lenses, and in particular to an intraocular artificial lens auxiliary implantation system and an assembly method thereof. Background Art

[0002] At present, the intraocular lens implantation surgery has undergone tremendous changes with the development of lens material technology. The mainstream intraocular lens is the foldable intraocular lens, and the main implantation method is implantation with an implanter, that is, the foldable intraocular lens is folded and compressed with an implanter and then implanted into the patient's eye. This method has the advantage of a small surgical incision. The core of the implanter is the introduction head. The internal channel of the introduction head plays the role of folding, deforming, and transporting the crystal. Usually, the introduction head is symmetrically designed, that is, symmetrical external structure and symmetrical internal channel. However, this method has a certain degree of potential failure risk and obvious shortcomings in actual clinical applications. The foldable intraocular lens introduction head requires the intraocular lens to be pre-loaded in the folding cavity, and then the introduction head folding loop is folded. The lens is easily pinched during the folding process, resulting in implantation failure. The first risk of flat intraocular lens introduction heads on the market is that when the introduction head on the market is matched with the reusable intraocular lens implanter, an interference fit is adopted, and the interference fit will cause the introduction head to tear and deform. The second risk of flat-plate intraocular lens inserters on the market is that the rear end inner cavity entrance of the inserter on the market is on the same plane as the mating surface of the inserter and the reusable intraocular lens implanter. The inserter and the reusable intraocular lens implanter are matched. In actual clinical applications, the inserter is prone to debris, resulting in a small amount of debris directly entering the implant head cavity during the above installation process. Later, during the process of implanting the intraocular lens into the human eye, the debris will be injected into the eye along with the intraocular lens, which may cause intraocular inflammation. Therefore, it is urgent to develop an intraocular intraocular intraocular lens auxiliary implantation system and its assembly method to solve the above technical problems.

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

[0004] The purpose of the present invention is to provide an intraocular artificial lens auxiliary implantation system and an assembly method thereof. The flat-plate introduction head does not need to be folded, and loading the artificial lens is relatively simple, avoiding potential risks. It is used in conjunction with a reusable implanter, and is convenient to assemble and disassemble. The assembly adopts a forward linear press-in clamping force-bearing mechanism of the implanter, which will not cause interference tearing deformation to the introduction head, nor will it cause the introduction head to drop debris, and can effectively prevent the fallen debris from entering the inner cavity of the introduction head. It can be used for both hydrophobic artificial lenses and hydrophilic artificial lenses, has broad application prospects, and is conducive to popularization and application.

[0005] In order to achieve the above-mentioned purpose, the present invention provides an intraocular artificial lens auxiliary implantation system, including a flat-plate introduction head and a reusable implanter; the introduction head includes an inner cavity and an outer structure, the inner cavity gradually shrinks from the rear end to the front end to form a smooth free-form surface, and the artificial lens is folded in the inner cavity according to the designed folding structure; the introduction head is provided with an introduction head front end at the head, and an introduction head rear end at the tail, and front buckle left, front buckle right, rear buckle left, and rear buckle right are provided on both sides respectively, upper stop surface left and upper stop surface right are provided on the top, lower stop surface left and lower stop surface right are provided on the bottom, and a manual operation part is provided on the outside; the implanter includes an introduction head loading part at the front end and a push injection drive mechanism connected to the rear end, the introduction head loading part includes a main body, an introduction head rotating part, an introduction head locking part and a bearing, the introduction head locking part is connected to the introduction head rotating part through a bearing, and the introduction head rotating part can rotate freely.

[0006] Preferably, the push-injection drive mechanism includes a push-injection rod, a rotating handle, a decorative cap, a retaining spring and a top screw. One end of the push-injection rod is inserted into the main body, and the other end is connected to the rotating handle. A decorative cap is provided at the end of the rotating handle. A retaining spring is provided between the push-injection rod and the decorative cap, and a top screw is provided between the push-injection rod and the rotating handle.

[0007] Preferably, the main body is provided with a left front card slot, a right front card slot, a left guide head movement support surface, a right guide head movement support surface, an anti-rotation platform, a rotating external thread and a limit platform in sequence from front to back.

[0008] Preferably, a rotating handle is provided on the outer side of the introduction head rotating part, a rotating internal thread is provided on the inner side, a bearing inner support surface is provided at one end, and a limit surface is provided at the other end.

[0009] Preferably, an outer bearing support surface is provided on one side of the guide head locking piece, and a left motion support surface, a right upper stop surface of the guide head, a left rear slot and a right rear slot are provided on the other side, and an anti-rotation groove is provided inside. The outer bearing support surface of the guide head locking piece is connected to the inner bearing support surface of the guide head rotating piece through a bearing.

[0010] Preferably, the rear slot left and the rear slot right of the introduction head locking piece are not on the same plane, the rear buckle left and the rear buckle right of the introduction head are not on the same plane, and the corresponding front buckle left and the front buckle right of the introduction head are not on the same plane, and the rear buckle left and the rear buckle right are also not on the same plane.

[0011] Preferably, when the rear buckle left and rear buckle right are buckled with the rear card slot left and rear card slot right, they are not in the same space as the rear end entrance of the introduction head.

[0012] The present invention also provides an assembly method for the above-mentioned intraocular artificial lens auxiliary implantation system, comprising the following steps: an introduction head locking member, an introduction head rotating member and a bearing form an assembly, which is installed on a main body; an anti-rotation platform is connected to an anti-rotation groove to prevent the introduction head locking member from rotating, and rotation will cause the introduction head assembly to fail; a left introduction head motion support surface and a right introduction head motion support surface cooperate with a left motion support surface and a right introduction head upper stop surface; the introduction head locking member moves smoothly back and forth on the main body; the rotating internal thread of the introduction head rotating member is engaged with the rotating external thread of the main body; the introduction head rotating member rotates freely on the main body, driving the introduction head locking member to move back and forth; when the introduction head rotating member moves backward, the limit platform cooperates with the limit surface to limit the introduction head rotating member from falling off from the rear end; when the introduction head is installed, the introduction head rotating member moves forward; when the left front card slot and the right front card slot of the main body contact with the left front card buckle and the right front card buckle of the introduction head, and the left rear card slot and the right rear card slot of the introduction head locking member contact with the left rear card buckle and the right rear card buckle of the introduction head, the introduction head assembly is completed.

[0013] The invention provides an intraocular artificial lens auxiliary implantation system and an assembly method thereof, which have the following beneficial effects.

[0014] 1. The assembly of the introducer head and the implanter of the present invention adopts a forward linear press-in type clamping force-bearing mechanism of the implanter, which will not cause interference tearing deformation to the introducer head, nor will it cause the introducer head to drop debris, and can effectively prevent the fallen debris from entering the inner cavity of the introducer head.

[0015] 2. The flat-plate introduction head of the present invention does not need to be folded, and loading of the intraocular lens is relatively simple, which can avoid potential risks. It is used in conjunction with a reusable implanter, and is easy to assemble and disassemble. It can be used for both hydrophobic intraocular lenses and hydrophilic intraocular lenses.

[0016] 3. The rear slot left and rear slot right of the guide head locking member of the present invention are not on the same plane, the rear buckle left and rear buckle right of the guide head are not on the same plane, and the corresponding front buckle left and front buckle right of the guide head are not on the same plane, and the rear buckle left and rear buckle right are not on the same plane, which can effectively prevent the guide head from being installed upside down.

[0017] 4. When the rear buckle left and rear buckle right of the present invention are buckled with the rear card slot left and rear card slot right, they are not in the same space as the rear end entrance of the introduction head, which can effectively prevent the fallen debris from entering the inner cavity of the introduction head. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A stereoscopic diagram of an intraocular artificial lens auxiliary implantation system provided by the present invention; Figure 2 A cross-sectional view of an intraocular artificial lens auxiliary implantation system provided by the present invention; Figure 3 An exploded diagram of an intraocular artificial lens auxiliary implantation system provided by the present invention; Figure 4 It is a schematic diagram of the main structure; Figure 5 This is a schematic diagram of the import head structure; Figure 6 Schematic diagram of the assembly of the introducer and intraocular lens.

[0019] Figure 7 It is a schematic diagram of the structure of the guide head locking member; Figure 8 This is a schematic diagram of the structure of the introduction head rotating part; Fig. 9 This is a schematic diagram of the splitting of the import head and the main body; Fig.10 Loading diagram for the import header.

[0020] In the figure: 1. Main body 101. Limiting table 102. Anti-rotation table 103. Rotating external thread 104a. Left support surface of introduction head movement 104b. Right support surface of introduction head movement 105a. Left front card slot 105b. Right front card slot 2. Injection rod 3. Rotating handle 4. Decorative cap 5. Introduction head rotating part 501. Rotating handle 1 502. Bearing inner support surface 503. Rotating internal thread 504. Limiting surface 6. Circlip 7. Introduction head 701. Front end of introduction head 702. Rear end of introduction head 703a. Left front buckle 703b. Front Buckle right 704a. Upper stop surface left 704b. Upper stop surface right 705a. Rear buckle left 705b. Rear buckle right 706a. Lower stop surface left 706b. Lower stop surface right 707. Manual operation part 8. Artificial lens 801. Posterior loop 802. Anterior loop 803. Optical zone 9. Introduction head locking piece 901. Bearing outer support surface 902a. Motion support surface left 902b. Introduction head upper stop surface right 903a. Rear card slot left 903b. Rear card slot right 904. Anti-rotation groove 10. Top screw 11. Bearing. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with specific embodiments and drawings to help understand the content of the present invention.

[0022] like Figure 1-Figure 3 As shown in the figure, they are respectively a stereoscopic view, a cross-sectional view and an exploded view of an intraocular artificial lens auxiliary implantation system provided by the present invention. The intraocular artificial lens auxiliary implantation system comprises a flat-plate introduction head 7 and a reusable implanter. Figure 5-Figure 6The diagrams are respectively a schematic diagram of the structure of the introduction head and a schematic diagram of its assembly with the intraocular lens. The introduction head 7 includes an inner cavity and an outer structure, the inner cavity gradually shrinks from the rear end to the front end to form a smooth free-form surface, the intraocular lens 8 is folded in the inner cavity according to the designed folding structure, and the intraocular lens 8 includes a rear haptic 801, an anterior haptic 802 and an optical zone 803. The head of the introducer head 7 is provided with an introducer head front end 701, the tail is provided with an introducer head rear end 702, the two sides are provided with a front buckle left 703a, a front buckle right 703b, a rear buckle left 705a, and a rear buckle right 705b respectively, the top is provided with an upper stop surface left 704a and an upper stop surface right 704b, the bottom is provided with a lower stop surface left 706a and a lower stop surface right 706b, and the outer side is provided with a manual operation part 707; the implanter includes an introducer head loading part at the front end and a push injection drive mechanism connected to the rear end, the introducer head loading part includes a main body 1, an introducer head rotating part 5, an introducer head locking part 9 and a bearing 11, the introducer head locking part 9 is connected to the introducer head rotating part 5 through the bearing 11, and the introducer head rotating part 5 can rotate freely. Fig. 9 The figure shows the schematic diagram of the separation of the import head and the main body.

[0023] The push-injection driving mechanism includes a push-injection rod 2, a rotating handle 3, a decorative cap 4, a retaining spring 6 and a top screw 10. One end of the push-injection rod 2 is inserted into the main body 1, and the other end is connected to the rotating handle 3. A decorative cap 4 is provided at the end of the rotating handle 3. A retaining spring 6 is provided between the push-injection rod 2 and the decorative cap 4, and a top screw 10 is provided between the push-injection rod 2 and the rotating handle 3.

[0024] like Figure 4 The main body 1 is provided with a front card slot left 105a, a front card slot right 105b, a guide head movement support surface left 104a, a guide head movement support surface right 104b, an anti-rotation platform 102, a rotating external thread 103 and a limit platform 101 from front to back.

[0025] like Figure 8 The introduction head rotating member 5 is provided with a rotating handle 501 on the outside, a rotating internal thread 503 on the inside, a bearing inner support surface 502 on one end, and a limit surface 504 on the other end.

[0026] like Figure 7 The figure is a schematic diagram of the structure of the guide head locking member. The guide head locking member 9 is provided with a bearing outer support surface 901 on one side, and a motion support surface left 902a, a guide head upper stop surface right 902b, a rear clamping groove left 903a and a rear clamping groove right 903b on the other side, and an anti-rotation groove 904 is provided inside. The bearing outer support surface 901 of the guide head locking member 9 is connected to the bearing inner support surface 502 of the guide head rotating member 5 through a bearing 11.

[0027] The left rear slot 903a and the right rear slot 903b of the introduction head locking member 9 are not on the same plane, the left rear buckle 705a and the right rear buckle 705b of the introduction head 7 are not on the same plane, and the left front buckle 703a and the right front buckle 703b of the introduction head 7 are not on the same plane, and the left rear buckle 705a and the right rear buckle 705b are not on the same plane, which can effectively prevent the introduction head 7 from being installed upside down. When the left rear buckle 705a and the right rear buckle 705b are buckled with the left rear slot 903a and the right rear slot 903b, they are not in the same space as the rear end entrance of the introduction head 7, which can well prevent the fallen debris from entering the inner cavity of the introduction head 7.

[0028] The present invention also provides an assembly method for the above-mentioned intraocular artificial lens auxiliary implantation system, comprising the following steps: an introduction head locking member 9, an introduction head rotating member 5 and a bearing 11 form an assembly and are installed on the main body 1; an anti-rotation platform 102 is connected to the anti-rotation groove 904 to prevent the introduction head locking member 9 from rotating, and rotation may cause the introduction head 7 to fail to assemble; the introduction head movement support surface 104a on the left and the introduction head movement support surface 104b on the right cooperate with the movement support surface 902a on the left and the introduction head stop surface 902b on the right; the introduction head locking member 9 moves smoothly back and forth on the main body 1; the rotating internal thread 503 on the introduction head rotating member 5 is meshed with the rotating external thread 103 on the main body 1; the introduction head rotating member 5 rotates freely on the main body 1, driving the introduction head locking member 9 to move back and forth; when the introduction head rotating member 5 moves backward, the limit platform 101 cooperates with the limit surface 504, To limit the fall-off of the guide head rotating member 5 from the rear end, when the guide head 7 is installed, the guide head rotating member 5 moves forward, when the front card slot left 105a and the front card slot right 105b of the main body 1 contact with the front buckle left 703a and the front buckle right 703b of the guide head 7, and the rear card slot left 903a and the rear card slot right 903b of the guide head locking member 9 contact with the rear buckle left 705a and the rear buckle right 705b of the guide head 7, the assembly of the guide head 7 is completed.

[0029] like Fig.10 The figure shows a schematic diagram of loading the guide head. Loading method of the guide head 7: the guide head 7 moves downward, as shown in direction ①, and stops when the guide head movement support surface 104a on the left and the guide head movement support surface 104b on the right contact the lower stop surface 706a on the left and the lower stop surface 706b on the right, completing the movement in direction ①; then the guide head 7 moves forward, as shown in direction ②, and stops when the front buckle 703a on the left and the front buckle 703b on the right contact the front card slot 105a on the left and the front card slot 105b on the right, completing the movement in direction ②; then the guide head rotating member 5 is rotated to drive the guide head locking member 9 to move forward, as shown in direction ③, when the rear buckle 705a on the left and the rear buckle 705b on the guide head 7 contact the rear card slot 903a on the left and the rear card slot 903b on the right, the guide head 7 is locked, completing the movement in direction ③; the loading of the guide head 7 is completed; Disassembly method of the introduction head 7: Rotate the introduction head rotating member 5 to drive the introduction head locking member 9 to move backward, as shown in direction ④. When the rear buckle left 705a and rear buckle right 705b of the introduction head 7 are separated from the rear card slot left 903a and rear card slot right 903b of the introduction head locking member 9, the introduction head rotating member 5 continues to rotate backward. When the limiting platform 101 of the main body 1 contacts the limiting surface 504 of the introduction head rotating member 5, the introduction head rotating member 5 stops, completing the movement in direction ④. Then the guide head 7 moves backward, as shown in direction ⑤, when the front buckle left 703a, the front buckle right 703b are separated from the front card slot left 105a, the front card slot right 105b, the movement in direction ③ is completed; then the guide head 7 moves upward, as shown in direction ⑥, when the guide head movement support surface left 104a, the guide head movement support surface right 104b are separated from the lower stop surface left 706a, the lower stop surface right 706b, the movement in direction ⑥ is completed; the disassembly of the guide head 7 is completed.

[0030] The flat-plate introduction head 7 of the present invention does not need to be folded, and loading the artificial lens 8 is relatively simple, which can avoid potential risks. It is used in conjunction with a reusable implanter, and is easy to assemble and disassemble. The assembly adopts the implanter's forward linear press-in clamping force mechanism, which will not cause interference tearing deformation to the introduction head 7, nor will it cause the introduction head 7 to drop debris, and can effectively prevent the fallen debris from entering the inner cavity of the introduction head 7. It can be used for both hydrophobic artificial lenses and hydrophilic artificial lenses.

[0031] 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. An intraocular artificial lens auxiliary implantation system, characterized in that: It comprises a flat-plate introduction head and a reusable implanter; the introduction head comprises an inner cavity and an outer structure, the inner cavity gradually shrinks from the rear end to the front end to form a smooth free-form surface, and the artificial lens is folded in the inner cavity according to the designed folding structure; the introduction head is provided with an introduction head front end at the head portion, and an introduction head rear end at the tail portion, and front buckle left, front buckle right, rear buckle left, and rear buckle right are provided on both sides respectively, upper stop surface left and upper stop surface right are provided on the top, lower stop surface left and lower stop surface right are provided on the bottom, and a manual operation part is provided on the outside; the implanter comprises an introduction head loading part at the front end and a push injection driving mechanism connected to the rear end, the introduction head loading part comprises a main body, an introduction head rotating part, an introduction head locking part and a bearing, and the introduction head locking part communicates with the introduction head rotating part The guide head rotating part can rotate freely through the bearing connection, and the guide head locking part is provided with an outer bearing supporting surface on one side of the guide head locking part, and a left motion supporting surface, a right upper stop surface of the guide head, a left rear slot and a right rear slot on the other side. An anti-rotation groove is provided inside, and the outer bearing supporting surface of the guide head locking part is connected with the inner bearing supporting surface of the guide head rotating part through a bearing, and the left rear slot and the right rear slot of the guide head locking part are not on the same plane, and the left rear buckle and the right rear buckle of the guide head are not on the same plane, and the corresponding left front buckle and the right front buckle of the guide head are not on the same plane, and the left rear buckle and the right rear buckle are also not on the same plane. When the left rear buckle and the right rear buckle are buckled with the left rear slot and the right rear slot, they are not in the same space as the rear end entrance of the guide head.

2. The intraocular artificial lens assisted implantation system according to claim 1, characterized in that: The push-injection drive mechanism includes a push-injection rod, a rotating handle, a decorative cap, a retaining spring and a top screw. One end of the push-injection rod is inserted into the main body, and the other end is connected to the rotating handle. A decorative cap is provided at the end of the rotating handle. A retaining spring is provided between the push-injection rod and the decorative cap, and a top screw is provided between the push-injection rod and the rotating handle.

3. The intraocular artificial lens assisted implantation system according to claim 2, characterized in that: The main body is provided with a left front card slot, a right front card slot, a left guide head movement support surface, a right guide head movement support surface, an anti-rotation platform, a rotating external thread and a limit platform in sequence from front to back.

4. The intraocular artificial lens assisted implantation system according to claim 3, characterized in that: The outer side of the introduction head rotating part is provided with a rotating handle, the inner side is provided with a rotating internal thread, one end is provided with a bearing inner supporting surface, and the other end is provided with a limiting surface.

5. An assembly method of the intraocular artificial lens auxiliary implantation system according to any one of claims 1 to 4, characterized in that: The invention comprises the following steps: an introduction head locking piece, an introduction head rotating piece and a bearing form an assembly, which is installed on the main body; an anti-rotation platform is connected to the anti-rotation groove to prevent the introduction head locking piece from rotating; the introduction head movement support surface left and the introduction head movement support surface right cooperate with the movement support surface left and the introduction head upper stop surface right; the introduction head locking piece moves smoothly back and forth on the main body; the rotating internal thread of the introduction head rotating piece is meshed with the rotating external thread of the main body; the introduction head rotating piece rotates freely on the main body, driving the introduction head locking piece to move back and forth; when the introduction head rotating piece moves backward, the limit platform cooperates with the limit surface to limit the introduction head rotating piece from falling off from the rear end; when the introduction head is installed, the introduction head rotating piece moves forward; when the front card slot left and the front card slot right of the main body contact with the front buckle left and the front buckle right of the introduction head, and the rear card slot left and the rear card slot right of the introduction head locking piece contact with the rear buckle left and the rear buckle right of the introduction head, the introduction head assembly is completed.

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