Lateral pushing assembly for intraocular lens injector

Abstract

The invention relates to the technical field of intraocular lens injectors, in particular to a side pushing assembly for an intraocular lens injector, which comprises a booster outer cylinder, a push assisting rod is movably mounted on one side of the interior of the booster outer cylinder, and an intraocular lens side pushing guide head assembly and an intraocular lens preassembling assembly are arranged on the other side of the booster outer cylinder. The intraocular lens lateral-pushing guide head assembly has the advantages that the intraocular lens lateral-pushing guide head assembly is designed to be matched with the intraocular lens preassembling assembly, when preassembling of the intraocular lens is completed, the intraocular lens can be placed on the intraocular lens placing frame to be extruded during assembling, and therefore the intraocular lens can be conveniently assembled. A lens preloaded in the lens placing cavity is extruded into the movable side-pushing guide head in a sliding manner under the extrusion and lubrication action of the protective liquid, the installation of the lens is completed, no tool is used for extrusion in the whole process, and the lens cannot be greatly influenced.

Description

Technical Field

[0001] The invention belongs to the technical field of intraocular lens injectors, and in particular relates to a side push assembly for an intraocular lens injector. Background Art

[0002] Intraocular lens implantation is a surgical method for treating cataracts. During the intraocular lens implantation procedure, the intraocular lens is directed and pushed out and implanted into the patient's eye with the help of an intraocular lens pusher. An intraocular lens pusher is a medical device used to implant intraocular lenses into the eye. The side push assembly is a key part of the pusher, responsible for pushing the folded or curled intraocular lens out of the pusher and into the eyeball. The side push assembly usually contains one or more push rods for pushing the intraocular lens forward. The push rod slides in the guide groove to ensure the linear motion and stability of the push rod. Some use springs or elastic elements to provide thrust to ensure the smooth movement of the push rod. The push rod and guide groove are usually made of biocompatible materials, such as medical-grade stainless steel or polymers, to ensure that it does not cause eye irritation or infection. The side push assembly pushes the folded or curled intraocular lens out of the pusher and into the eyeball through the linear motion of the push rod. However, when an artificial lens is implanted using an injector in the prior art, it is necessary to use tweezers or the like to pinch the artificial lens into the injector, or to put it into an artificial lens holder, and repeat the operation, which can easily damage the artificial lens.

[0003] The existing Chinese patent document with publication number CN109124827B proposes a pre-installation device for an artificial lens, which quickly snaps together the injector and the lens holder assembly by inserting an injector into the pre-installation box, and then pulls out the injector, whereupon the lens holder assembly is snapped onto the injector, and then the pressure block of the injector cooperates with the lens ejection slot to press the lens from the holder into the injector, and then the injector is injected into the human eye to solve the above technical problems. However, during the snap connection and pressure block ejection process, the lens holder assembly may be subjected to greater force, resulting in deformation or damage, affecting the integrity and positioning of the lens.

[0004] Therefore, the present invention proposes a side-push assembly for an intraocular lens injector to solve the problem in the prior art that the lens holder assembly of the preinstalled intraocular lens injector may be subjected to a large force during the pushing process, thereby affecting the integrity and positioning of the lens. A side-push assembly is designed, and the side push rod is improved. In combination with a deformable intraocular lens mounting component, the preinstallation can be completed, and the design of the side-push assembly can be used to slowly unfold the intraocular lens during the pushing process, thereby preventing the intraocular lens from being deformed due to a large force. Summary of the invention

[0005] In view of the deficiencies in the prior art, the object of the present invention is to provide a side push assembly for an intraocular lens injector to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a side-push assembly for an intraocular lens injector, comprising a booster outer cylinder, a booster rod is movably installed on one side of the inner part of the booster outer cylinder, an intraocular lens side-push guide head assembly and an intraocular lens pre-installation assembly are arranged on the other side of the booster outer cylinder, a side-push piston rod and a sealing limit ring are arranged inside the booster outer cylinder, the intraocular lens side-push guide head assembly comprises a fixed head and a movable side-push guide head, the intraocular lens pre-installation assembly comprises a lens pre-installation box, a sealing buckle and a protective liquid storage chamber, and one side of the side-push piston rod is fixedly connected to one side of the booster rod.

[0007] Preferably, the fixed head is fixedly mounted on the flat end of the booster outer tube, the movable side thrust guide head is movably mounted inside the fixed head, an inner extrusion gasket is provided on the inner side of the fixed head, a sealing piston is fixedly mounted on one side of the movable side thrust guide head, and a limiting groove matching the sealing piston is provided inside the booster outer tube.

[0008] Preferably, a movable sleeve is fixedly installed in the middle of one side of the sealing piston, a limiting pad is fixedly installed at one end of the movable sleeve, the inner surface of the movable sleeve is movably connected to the outer surface of the side-thrust piston rod, an elastic buckle is movably installed on the inner side wall of the side-thrust piston rod, and a groove adapted to the elastic buckle is opened inside the movable sleeve.

[0009] Preferably, a side-push incision guide head is fixedly installed on the other end of the movable sleeve, an oblique guide groove is provided on the inner side of the side-push incision guide head, a side-push piston is fixedly installed on the middle part of one side of the movable sleeve close to the side-push incision guide head, lens folding brackets are symmetrically provided on both sides of the side-push piston, a lens pushing sheet is provided inside the side-push piston, and one end of the side-push piston rod passes through the sealing piston, the inner wall of the side-push piston and is fixedly connected to the middle part of the lens folding bracket.

[0010] Preferably, a lens placing frame is fixedly installed inside the lens pre-installed box, a lens placing cavity is provided on the inner side of the lens placing frame, an extrusion pad is provided between the outer side of the lens placing frame and the inner side of the lens pre-installed box, a sealing buckle is fixedly installed inside one side of the lens pre-installed box, and a protective liquid storage cavity is fixedly installed on the outside of the other side of the lens pre-installed box.

[0011] Preferably, a sealing ring is provided inside the sealing buckle, an auxiliary extrusion strip is provided on the outside of the sealing buckle, a snap-in groove matched with the auxiliary extrusion strip is provided outside the flat end of the booster outer tube, a protective liquid storage bag is provided inside the protective liquid storage cavity, a puncture injection tube is provided on the side of the protective liquid storage bag close to the lens placement stand, and a puncture port matched with the puncture injection tube is provided on one side of the lens placement stand.

[0012] Preferably, the sealing limit ring is fixedly installed inside one side of the booster outer tube, a sliding groove compatible with the booster rod is provided in the middle of the sealing limit ring, a pre-fixing ring is provided on one side of the sealing limit ring, a limiting stop ring is provided on one side of the pre-fixing ring, the pre-fixing ring and the limiting stop ring are both fixedly installed on the inner side of the booster outer tube, a spring is fixedly installed on the other side surface of the pre-fixing ring, and an assembly hole compatible with the spring is provided inside the sealing limit ring.

[0013] Preferably, a small fixed circle is fixedly installed on one side surface of the pre-fixing ring through a thin support rod, a magnetic ring 2 is fixedly installed inside the small fixed circle, and a side limiting support rod is also symmetrically fixedly installed on one side surface of the pre-fixing ring, and a bending head is provided at one end of the side limiting support rod.

[0014] Preferably, a middle limit ring is provided on one side of the bending head, both sides of the middle limit ring are inclined table surfaces, the middle limit ring is fixedly installed inside the booster outer tube, and a slide groove adapted to the movable sleeve is provided in the middle of the middle limit ring.

[0015] Preferably, a moving ring is fixedly installed in the middle of the side-thrust piston rod, a magnetic ring 1 is fixedly installed on the outer surface of the moving ring, the magnetic properties of the magnetic ring 1 and the magnetic ring 2 are different, and a moving pad is fixedly installed in the middle of the outer surface of the side-thrust piston rod.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By designing the artificial lens side-push guide head assembly to cooperate with the artificial lens pre-installation assembly, when the artificial lens is pre-installed, the lens placement frame can be squeezed during assembly, so that the pre-installed lens inside the lens placement cavity is slid into the movable side-push guide head under the squeezing and lubrication action of the protective liquid to complete the installation of the lens. The whole process does not require the use of any tools for squeezing, and will not cause a significant impact on the lens. In addition, by designing the side-push piston rod to cooperate with the sealing limit ring, during the assisting push, the folded artificial lens is slowly pushed in from both sides of the eye incision in an inwardly concentrated posture through the oblique lead-out grooves on both sides of the side-push incision introduction head. The side-push incision introduction head can make the artificial lens slowly rebound and unfold in the process of being pushed into the incision. Only slight adjustments need to be made later to make it fit the eyeball. There is no need to use a needle tool to unfold it after introduction, so as to minimize the damage to the eye lens implantation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the artificial lens pre-installed component and the booster outer cylinder before assembly of the present invention.

[0019] Figure 2 It is a schematic cross-sectional structure diagram of the booster outer cylinder before the intraocular lens pre-assembled component of the present invention is assembled with the booster outer cylinder.

[0020] Figure 3 It is a schematic cross-sectional structure diagram of the entire intraocular lens pre-assembled component and the booster outer cylinder before assembly of the present invention.

[0021] Figure 4 For the present invention Figure 1 A is an enlarged structural diagram of FIG.

[0022] Figure 5 For the present invention Figure 3 Schematic diagram of the enlarged structure at B.

[0023] Figure 6 For the present invention Figure 3 Enlarged structural diagram at C.

[0024] Figure 7 It is a schematic diagram of the overall structure of the artificial lens pre-installed component and the booster outer cylinder after being assembled.

[0025] Figure 8 It is a schematic diagram of the cross-sectional structure of the booster outer cylinder after the artificial lens pre-assembled component of the present invention is assembled with the booster outer cylinder.

[0026] Fig. 9 It is a schematic cross-sectional structure diagram of the whole after the artificial lens pre-installed component and the booster outer cylinder of the present invention are assembled.

[0027] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at D.

[0028] Fig.11 It is a structural schematic diagram of the booster outer tube of the present invention in the extrusion state of the movable side push guide head.

[0029] Fig.12 It is a schematic diagram of the overall structure of the movable side push guide head of the present invention in the extrusion state.

[0030] Fig.13 For the present invention Fig.12 Enlarged structural diagram at E.

[0031] Fig.14 It is a schematic diagram of the structure inside the booster outer tube of the present invention when the movable side thrust guide head is in a retracted state.

[0032] Fig.15 It is a schematic diagram of the front end cross-sectional structure of the booster outer tube of the present invention when the movable side thrust guide head is in the retracted state.

[0033] Fig.16 For the present invention Fig.15 Enlarged structural diagram of F.

[0034] Fig.17 It is a schematic diagram of the overall internal structure after the pre-fixing ring of the present invention is released.

[0035] Fig.18 It is a schematic diagram of the internal structure of the movable pad of the present invention when it moves to the extreme position.

[0036] Fig.19 For the present invention Fig.18 Schematic diagram of the enlarged structure at G.

[0037] Fig. 20 It is a schematic diagram of the overall explosion structure of the present invention.

[0038] Fig.21 It is a schematic diagram of the overall internal structure of the side thrust piston rod of the present invention.

[0039] In the figure: 1, booster outer cylinder; 2, booster rod; 3, intraocular lens side push guide head assembly; 31, fixed head; 311, inner extrusion gasket; 32, movable side push guide head; 321, sealing piston; 322, movable sleeve; 3221, limit pad; 323, side push incision introduction head; 324, side push piston; 3241, lens folding bracket; 3242, lens push sheet; 4, intraocular lens pre-installed assembly; 41, lens pre-installed box; 411, extrusion pad; 412, lens placement frame; 4121, wear Puncture; 413, lens placement cavity; 42, sealing buckle; 421, sealing ring; 422, auxiliary extrusion strip; 43, protective liquid storage cavity; 44, protective liquid storage bag; 441, puncture injection tube; 5, side push piston rod; 51, moving ring; 52, magnetic ring one; 53, moving pad; 54, elastic buckle; 6, sealing limit ring; 61, pre-fixing ring; 62, limit stop ring; 63, spring; 64, small fixing circle; 641, magnetic ring two; 65, side limit support rod; 651, bending head; 66, middle limit ring. DETAILED DESCRIPTION

[0040] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] For example, see Figures 1 to 21The present invention provides a technical solution: a side-push assembly for an intraocular lens injector, comprising a booster outer cylinder 1, a booster rod 2 is movably installed on one side of the inner part of the booster outer cylinder 1, an intraocular lens side-push guide head assembly 3 and an intraocular lens pre-installed assembly 4 are arranged on the other side of the booster outer cylinder 1, a side-push piston rod 5 and a sealing limit ring 6 are arranged inside the booster outer cylinder 1, the intraocular lens side-push guide head assembly 3 comprises a fixed head 31 and a movable side-push guide head 32, the intraocular lens pre-installed assembly 4 comprises a lens pre-installed box 41, a sealing buckle 42 and a protective liquid storage chamber 43, one side of the side-push piston rod 5 is fixedly connected to one side of the booster rod 2, the fixed head 31 is fixedly installed on the flat end of the booster outer cylinder 1, the movable side-push guide head 32 is movably installed inside the fixed head 31, an inner extrusion gasket 311 is arranged on the inner side of the fixed head 31, a sealing piston 321 is fixedly installed on one side of the movable side-push guide head 32, and the inner part of the booster outer cylinder 1 is provided with a sealing piston 321 which is connected to the sealing movable The stopper 321 is matched with a limit slide groove, a movable sleeve 322 is fixedly installed in the middle of one side of the sealing piston 321, a limit pad 3221 is fixedly installed on one end of the movable sleeve 322, the inner surface of the movable sleeve 322 is movably connected with the outer surface of the side push piston rod 5, an elastic buckle 54 is movably installed on the inner side wall of the side push piston rod 5, a slot matched with the elastic buckle 54 is opened inside the movable sleeve 322, and a side push cutout guide head 323 is fixedly installed on the other end of the movable sleeve 322 An oblique guide groove is arranged on the inner side of the side-pushing incision introduction head 323, a side-pushing piston 324 is fixedly installed on the middle part of one side of the movable sleeve 322 close to the side-pushing incision introduction head 323, a lens folding bracket 3241 is symmetrically arranged on both sides of the side-pushing piston 324, a lens pushing sheet 3242 is arranged inside the side-pushing piston 324, and one end of the side-pushing piston rod 5 passes through the sealing piston 321, the inner wall of the side-pushing piston 324 is fixedly connected to the middle part of the lens folding bracket 3241;

[0042] In this embodiment, the booster outer tube 1 and the booster rod 2 form an intraocular lens booster assembly, the intraocular lens side-pushing guide head assembly 3 is installed at the flat end of the booster outer tube 1, and the intraocular lens side-pushing guide head assembly 3 is composed of a fixed head 31 and a movable side-pushing guide head 32. One end of the movable side-pushing guide head 32 is a side-pushing incision introduction head 323. The side-pushing incision introduction head 323 can be fitted under the eye incision in the pushed state, and the lens push sheet 3242 is pushed out by the side-pushing piston rod 5 to squeeze the lens folding bracket 3241 The folded artificial lens can be slowly pushed in from both sides of the eye incision through the oblique guide grooves on both sides in an inwardly concentrated posture. During the pushing process, compared with the traditional round needle tube, the side-push incision introduction head 323 is designed as a flat tube, and oblique guide grooves are provided on both sides. Its special shape design can also make the artificial lens slowly rebound and unfold during the process of being pushed into the incision. Only slight adjustments need to be made afterwards to make it fit the eyeball. There is no need to use a needle tool to unfold it after introduction, so as to minimize the damage to the eye lens implantation process.

[0043] For example 2, please refer to Figures 1 to 21 On the basis of the first embodiment, in order to facilitate the installation of the artificial lens into the movable side push guide head 32, the present embodiment further proposes that a lens placement frame 412 is fixedly installed inside the lens pre-installed box 41, a lens placement cavity 413 is arranged on the inner side of the lens placement frame 412, an extrusion pad 411 is arranged between the outer side of the lens placement frame 412 and the inner side of the lens pre-installed box 41, a sealing buckle 42 is fixedly installed inside one side of the lens pre-installed box 41, and a sealing buckle 42 is fixedly installed outside the other side of the lens pre-installed box 41. A protective liquid storage chamber 43 is provided, a sealing ring 421 is provided inside the sealing buckle 42, an auxiliary extrusion strip 422 is provided outside the sealing buckle 42, a snap-fit ​​groove matched with the auxiliary extrusion strip 422 is provided outside the flat end of the booster outer tube 1, a protective liquid storage capsule 44 is provided inside the protective liquid storage chamber 43, a puncture injection tube 441 is provided on one side of the protective liquid storage capsule 44 close to the lens placement frame 412, and a puncture port 4121 matched with the puncture injection tube 441 is provided on one side of the lens placement frame 412;

[0044] In the present embodiment, it should be noted that after the artificial lens is produced, it is directly stored in the lens placement cavity 413 formed on the inner side of the lens placement frame 412 inside the lens pre-installed box 41. The front end is sealed with a sealing buckle 42, and the protective liquid storage cavity 43 at the rear end needs to be pre-installed with a protective liquid storage capsule 44. The protective liquid storage capsule 44 is mainly protective liquid, which plays a lubricating and protective role in the process of artificial lens boosting. The middle part of the sealing ring 421 can be punctured by the long tip at the bottom of the side-pushing incision introduction head 323. One end of the auxiliary extrusion strip 422 extends into the space between the outer side of the lens placement frame 412 and the inner side of the lens pre-installed box 41. The auxiliary extrusion strip 422 is mainly connected by the connecting short pieces on both sides. The connecting short pieces will break under the action of the thrust. The auxiliary extrusion strip 422 will be directly inserted into the inner side of the lens pre-installed box 41. The specific installation process of the artificial lens is as follows: first, the auxiliary extrusion strip 422 is clamped with the external clamping groove of the flat end of the booster outer tube 1. At this time, the movable side push guide head 32 is in the initial position inside the fixed head 31, and the side push incision introduction head 323 is exposed. While pressing the booster rod 2, the booster outer tube 1 is pushed as a whole to make the side push incision introduction head 323 pierce the sealing ring 421. As the booster rod 2 is pressed, the booster rod 2 pushes the side push piston rod 5. The movable sleeve 322 is clamped with the elastic buckle 54. As the side push piston rod 5 is pushed and moved, the sealing piston 321 moves to the front end limit position of the limiting groove inside the booster outer tube 1. At this time, the front end of the movable side push guide head 32 is completely The lens body is pushed into the lens placement cavity 413, and the inner extrusion gasket 311 is squeezed and contracted by the movable side push guide head 32. At this time, the lens folding bracket 3241 will unfold naturally. When the auxiliary extrusion strip 422 is pushed and inserted into the inner side of the lens pre-installed box 41, the auxiliary extrusion strip 422 will squeeze the extrusion pad 411, so that the extrusion pad 411 is deformed to squeeze the lens placement frame 412 inward, and the puncture port 4121 on one side of the lens placement frame 412 is punctured by the puncture injection tube 441. At the same time, the lower end of the extrusion pad 411 will squeeze the outer side of the protective liquid storage bag 44 so that the protective liquid is squeezed and injected into the lens placement frame 412 through the puncture injection tube 441. However, the lens placement frame 412 is squeezed, so that the lens placement cavity 413 is filled with liquid. The pre-installed lens is slid into the movable side-push guide head 32 under the extrusion and lubrication of the protective liquid to complete the installation of the lens. The whole process does not require the use of any tools for extrusion, and will not cause a significant impact on the lens. Then, the booster rod 2 is pulled outward to break through the initial position until the magnetic ring 1 52 contacts the magnetic ring 2 641. Because of the different magnetic properties, they are adsorbed and merged together. The side-push piston rod 5 drives the movable ring 51 to move and retract the movable side-push guide head 32 into the interior of the fixed head 31. At this time, the lens folding bracket 3241 is squeezed inward by the internal extrusion gasket 311, and the lens inside the movable side-push guide head 32 is folded and folded. Then the lens pre-installed box 41 can be directly pulled out and discarded as a whole, and then kept still.Ready to boost.

[0045] For example 3, please refer to Figures 1 to 21 On the basis of the second embodiment, in order to allow the artificial lens to be accurately injected into the eye incision, the present embodiment further proposes that the sealing limit ring 6 is fixedly installed inside one side of the booster outer tube 1, the middle part of the sealing limit ring 6 is provided with a slide groove adapted to the booster rod 2, one side of the sealing limit ring 6 is provided with a pre-fixing ring 61, one side of the pre-fixing ring 61 is provided with a limiting retaining ring 62, the pre-fixing ring 61 and the limiting retaining ring 62 are both fixedly installed on the inner side of the booster outer tube 1, the other side surface of the pre-fixing ring 61 is fixedly installed with a spring 63, the inside of the sealing limit ring 6 is provided with an assembly hole adapted to the spring 63, one side surface of the pre-fixing ring 61 is fixedly installed with a fixing small circle 64 through a thin support rod, and the fixing small circle 64 is fixedly installed with a thin support rod. A magnetic ring 2 641 is fixedly installed inside the ring 64, and a side limit support rod 65 is symmetrically fixedly installed on one side surface of the pre-fixed ring 61. A bending head 651 is provided at one end of the side limit support rod 65, and a middle limit ring 66 is provided on one side of the bending head 651. Both sides of the middle limit ring 66 are inclined table surfaces. The middle limit ring 66 is fixedly installed inside the booster outer tube 1. A sliding groove adapted to the movable sleeve 322 is provided in the middle of the middle limit ring 66. A moving ring 51 is fixedly installed in the middle of the side push piston rod 5. A magnetic attraction ring 1 52 is fixedly installed on the outer surface of the moving ring 51. The magnetic attraction ring 1 52 has a different magnetic property from the magnetic ring 2 641. A moving pad 53 is fixedly installed in the middle of the outer surface of the side push piston rod 5.

[0046] In this embodiment, the sealing limit ring 6 mainly plays the role of limiting and sealing the booster rod 2. In the initial position, the pre-fixing ring 61 and the limit stop ring 62 are separated. The pre-fixing ring 61 is mainly fixed to the inside of the booster outer tube 1 through a connecting piece. When the lens is pre-installed, the booster rod 2 is pulled outward to break through the initial position. At this time, the side push piston rod 5 is pulled by the booster rod 2, and the moving ring 51 and the moving pad 53 both move in the direction of the pre-fixing ring 61. The moving pad 53 will squeeze the side limit support rod 65 during the movement to make it unfold, which is convenient for the movable sleeve 322 and the limit support rod 65 to move. The positioning pad 3221 moves until the magnetic ring 1 52 in the middle of the moving ring 51 contacts the magnetic ring 2 641. Because of the different magnetic properties, they are absorbed and merged into one. At this time, the limiting pad 3221 is on the inner side of the bending head 651. When boosting, it mainly pushes the boosting rod 2 to push the side push piston rod 5 out. At this time, because the magnetic ring 2 641 is attracted by the magnetic ring 1 52, it drives the fixed small circle 64 and the pre-fixing circle 61 to move as a whole, so that the connection between the pre-fixing circle 61 and the inner side of the booster outer tube 1 is broken, and the pre-fixing circle 61 is pushed out by the spring 63, so that the side limiting support rod 65 and the bending head 651 are limited to the middle as a whole. When the ring 66 moves to one side, the bending head 651 is blocked by the inclined surface of the middle limiting ring 66 and bends, locking the position of the limiting pad 3221. At this time, the movable sleeve 322 can no longer move. At this time, the side push incision introduction head 323 has been pushed out, but the lens folding bracket 3241 still maintains the gathered state of the lens. The limiting retaining ring 62 limits the moving position of the pre-fixing ring 61, so that the pre-fixing ring 61, the fixed small ring 64, and the side limiting support rod 65 all keep their positions unchanged. At this time, the booster rod 2 continues to be pushed to make the side push piston rod 5 continue to move forward, and the moving ring 51 and the magnetic suction Ring 1 52 is separated from the fixed small circle 64. At this time, the elastic buckle 54 is squeezed and contracted by the inner wall of the movable sleeve 322. The side-push piston rod 5 can be separated from the movable sleeve 322 and move to push out the lens pushing piece 3242. The ejection process will squeeze the lens folding bracket 3241, so that the folded artificial lens can be slowly pushed in from both sides of the eye incision through the oblique lead-out grooves on both sides of the side-push incision introduction head 323 in an inwardly concentrated posture until the moving pad 53 moves to one side of the limit pad 3221 and is fixed in position. The side-push piston rod 5 also reaches the limit position to avoid excessive pushing to cause damage to the eye.

[0047] Example 4, please refer to Figures 1 to 21 Based on the fourth embodiment, this embodiment further proposes a method for using a side push assembly for an intraocular lens injector, comprising the following steps:

[0048] Step 1, connect the auxiliary extrusion strip 422 with the external engaging groove of the flat end of the booster outer tube 1, press the booster rod 2 and push the booster outer tube 1 as a whole to make the side push incision guide head 323 pierce the sealing ring 421, and the side push piston rod 5 is pushed and moved by the booster rod 2 to make the sealing piston 321 move to the front end limit position of the internal limiting slide groove of the booster outer tube 1. At this time, the front end of the movable side push guide head 32 is pushed into the lens placement cavity 413 as a whole, and the inner extrusion gasket 311 is squeezed and contracted by the movable side push guide head 32, and the lens folding bracket 3241 will naturally unfold, and the auxiliary extrusion strip 422 is pushed and inserted into When the lens is pre-installed in the box 41, the auxiliary extrusion strip 422 will squeeze the extrusion pad 411, so that the extrusion pad 411 is deformed to squeeze the lens placement frame 412 inward, and the puncture hole 4121 on one side of the lens placement frame 412 is punctured by the puncture injection tube 441. At the same time, the lower end of the extrusion pad 411 will squeeze the outer side of the protective liquid storage bag 44 so that the protective liquid is squeezed and injected into the lens placement frame 412 through the puncture injection tube 441, so that the pre-installed lens in the lens placement cavity 413 is slid into the movable side push guide head 32 under the extrusion and lubrication effect of the protective liquid, and the installation of the lens is completed;

[0049] Step 2: Pull out the booster rod 2 to break through the initial position until the magnetic ring 1 52 and the magnetic ring 2 641 come into contact and are attracted and merged together due to the different magnetic properties. The side-push piston rod 5 drives the movable ring 51 to move and retract the movable side-push guide head 32 into the interior of the fixed head 31. At this time, the lens folding bracket 3241 is squeezed inward by the inner squeezing gasket 311, and the lens inside the movable side-push guide head 32 is folded and folded. Then, the lens pre-installed box 41 is pulled out as a whole and discarded without moving.

[0050] The third step is to assist the push, and the booster rod 2 is pushed to push the side push piston rod 5 out. At this time, because the magnetic ring 2 641 is attracted by the magnetic ring 1 52, the fixed small circle 64 and the pre-fixed circle 61 are moved as a whole, so that the connection between the pre-fixed circle 61 and the inner side of the booster outer tube 1 is broken, and the pre-fixed circle 61 is pushed out by the spring 63, so that the side limit support rod 65 and the bending head 651 are moved to one side of the middle limit circle 66 as a whole, and the bending head 651 is blocked by the inclined surface of the middle limit circle 66 and bends, and the position of the limit pad 3221 is locked. At this time, the side push incision introduction head 323 has been pushed out, but the lens folding bracket 3241 still maintains the gathered state of the lens, and the limit stop ring 62 limits the moving position of the pre-fixed circle 61, so that the pre-fixed circle 61 and the fixed small circle 64, and the side limit support rod 65 all keep their positions unchanged, and then continue to push the booster rod 2 to make the side push piston rod 5 continue to move forward, the movable ring 51 and the magnetic ring 52 are separated from the fixed small circle 64, at this time the elastic buckle 54 is squeezed and contracted by the inner wall of the movable sleeve 322, the side push piston rod 5 can be separated from the movable sleeve 322 to move, and the lens pushing piece 3242 is ejected. The ejection process will squeeze the lens folding bracket 3241, so that the folded artificial lens can be slowly pushed in from both sides of the eye incision through the oblique lead-out grooves on both sides of the side push incision introduction head 323 in an inwardly concentrated posture, until the moving pad 53 moves to one side of the limit pad 3221 and is fixed in position, and the side push piston rod 5 also reaches the limit position. At this time, the booster rod 2 can not be pushed, and the artificial lens is also injected.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A side push assembly for an intraocular lens injector, comprising a booster outer cylinder, a booster rod being movably mounted on one side of the inner side of the booster outer cylinder, characterized in that: An artificial lens side-push guide head assembly and an artificial lens pre-installation assembly are arranged on the other side of the booster outer tube, a side-push piston rod and a sealing limit ring are arranged inside the booster outer tube, the artificial lens side-push guide head assembly includes a fixed head and a movable side-push guide head, the artificial lens pre-installation assembly includes a lens pre-installation box, a sealing buckle and a protective liquid storage chamber, and one side of the side-push piston rod is fixedly connected to one side of the booster rod.

2. The side push assembly for an intraocular lens injector according to claim 1, characterized in that: The fixed head is fixedly mounted on the flat end of the booster outer tube, the movable side thrust guide head is movably mounted inside the fixed head, an inner extrusion gasket is arranged on the inner side of the fixed head, a sealing piston is fixedly mounted on one side of the movable side thrust guide head, and a limiting slide groove matched with the sealing piston is arranged inside the booster outer tube.

3. The side push assembly for an intraocular lens injector according to claim 2, characterized in that: A movable sleeve is fixedly installed in the middle of one side of the sealing piston, a limiting pad is fixedly installed at one end of the movable sleeve, the inner surface of the movable sleeve is movably connected to the outer surface of the side push piston rod, an elastic buckle is movably installed on the inner side wall of the side push piston rod, and a groove adapted to the elastic buckle is opened inside the movable sleeve.

4. The side push assembly for an intraocular lens injector according to claim 3, characterized in that: A side-push incision guide head is fixedly installed on the other end of the movable sleeve, an oblique guide groove is arranged on the inner side of the side-push incision guide head, a side-push piston is fixedly installed on the middle part of one side of the movable sleeve close to the side-push incision guide head, lens folding brackets are symmetrically arranged on both sides of the side-push piston, a lens pushing sheet is arranged inside the side-push piston, and one end of the side-push piston rod passes through the sealing piston, the inner wall of the side-push piston and is fixedly connected to the middle part of the lens folding bracket.

5. The side push assembly for an intraocular lens injector according to claim 1, characterized in that: A lens placement frame is fixedly installed inside the lens pre-installed box, a lens placement cavity is arranged on the inner side of the lens placement frame, an extrusion pad is arranged between the outer side of the lens placement frame and the inner side of the lens pre-installed box, a sealing buckle is fixedly installed inside one side of the lens pre-installed box, and a protective liquid storage cavity is fixedly installed on the outside of the other side of the lens pre-installed box.

6. The side push assembly for an intraocular lens injector according to claim 1, characterized in that: A sealing ring is arranged inside the sealing buckle, an auxiliary extrusion strip is arranged outside the sealing buckle, a snap-fit ​​groove matched with the auxiliary extrusion strip is arranged outside the flat end of the booster outer tube, a protective liquid storage bag is arranged inside the protective liquid storage cavity, a puncture injection tube is arranged on the side of the protective liquid storage bag close to the lens placement stand, and a puncture port matched with the puncture injection tube is arranged on one side of the lens placement stand.

7. The side push assembly for an intraocular lens injector according to claim 1, characterized in that: The sealing limit ring is fixedly installed inside one side of the booster outer tube, a sliding groove adapted to the booster rod is arranged in the middle of the sealing limit ring, a pre-fixing ring is arranged on one side of the sealing limit ring, a limiting stop ring is arranged on one side of the pre-fixing ring, the pre-fixing ring and the limiting stop ring are both fixedly installed on the inner side of the booster outer tube, a spring is fixedly installed on the other side surface of the pre-fixing ring, and an assembly hole adapted to the spring is arranged inside the sealing limit ring.

8. The side push assembly for an intraocular lens injector according to claim 7, characterized in that: A small fixed circle is fixedly installed on one side surface of the pre-fixing circle through a thin support rod, a second magnetic ring is fixedly installed inside the small fixed circle, and a side limiting support rod is symmetrically fixedly installed on one side surface of the pre-fixing circle, one end of which is provided with a bending head.

9. The side push assembly for an intraocular lens injector according to claim 8, characterized in that: A middle limiting ring is arranged on one side of the bending head, and both sides of the middle limiting ring are inclined table surfaces. The middle limiting ring is fixedly installed inside the booster outer cylinder, and a sliding groove adapted to the movable sleeve is arranged in the middle of the middle limiting ring.

10. The side push assembly for an intraocular lens injector according to claim 1, characterized in that: A moving ring is fixedly installed in the middle of the side-thrust piston rod, a magnetic ring 1 is fixedly installed on the outer surface of the moving ring, the magnetic properties of the magnetic ring 1 and the magnetic ring 2 are different, and a moving pad is fixedly installed in the middle of the outer surface of the side-thrust piston rod.

Images