Preassembled intraocular lens implantation system

Abstract

The utility model provides a preassembled intraocular lens implantation system, and relates to the technical field of intraocular lenses. The preassembled intraocular lens implanting system comprises a loading bin, an implanting push rod, a first limiting piece and a first locking piece, the loading bin is provided with a first locking hole, a loading cavity and an implanting direction, the loading cavity is used for loading an intraocular lens, and the implanting push rod can push the intraocular lens to move in the implanting direction; the first limiting piece is arranged in the loading cavity, the first limiting piece is located outside the moving path of the implanting push rod, and the first limiting piece abuts against the end, located on the upstream portion of the implanting direction, of the intraocular lens; the first locking piece at least can be switched between a first separation state separated from the loading bin and a first connection state connected with the loading bin; only in the first connection state, the part, located in the loading cavity, of the first locking piece abuts against the end, located on the downstream portion of the implanting direction, of the intraocular lens. The intraocular lens can be limited before implantation operation so as to limit movement of the intraocular lens.

Description

Technical Field

[0001] This application relates to the field of intraocular lens technology, and more particularly to a pre-loaded intraocular lens implantation system. Background Technology

[0002] Typically, intraocular lenses (IOLs) are implanted into the human body using a pre-loading system. This system includes the implantation body, the implantation plunger, and the IOL loading chamber. The plunger has a forked IOL clamping part at its tip, which holds the IOL within the loading chamber. As the plunger moves, the IOL automatically folds or curls after entering the delivery chamber until it is pushed out and into the eye, completing the implantation procedure. However, the IOL is only limited at its rear end within the loading chamber, which may allow it to shift forward, leading to pressure deformation and damage, thus affecting the product's effectiveness and potentially causing surgical failure. Utility Model Content

[0003] In view of this, the purpose of this application is to overcome the shortcomings of the prior art and provide a pre-loaded intraocular lens implantation system that can limit the movement of the intraocular lens before the implantation operation, thereby improving the product's performance. Moreover, during use, the locking device only needs to be removed once to simultaneously release the limiting of the lens and the limiting of the push rod.

[0004] This application provides the following technical solution:

[0005] In a first aspect, embodiments of this application provide a pre-loaded intraocular lens implantation system, the pre-loaded intraocular lens implantation system comprising:

[0006] The loading chamber and the implantation pusher are provided. The loading chamber has a first locking hole, a loading chamber, and an implantation direction. The first locking hole and the loading chamber are connected. The loading chamber is used to load an intraocular lens. The implantation pusher can push the intraocular lens to move along the implantation direction.

[0007] A first limiting member is disposed in the loading chamber, the first limiting member is located outside the movement path of the implantation push rod, and the first limiting member and the intraocular lens abut against each other at the upstream end in the implantation direction;

[0008] A first locking member is switchable between a first separated state and a first connected state connected to the loading chamber, wherein, only in the first connected state, a portion of the first locking member passes through the first locking hole and the loading chamber, and the portion of the first locking member located in the loading chamber abuts against the end of the intraocular lens located downstream in the implantation direction.

[0009] In some embodiments of the first aspect, in the first connected state, the portion of the first locking member located in the loading chamber is located in the gap between the optical portion of the intraocular lens and the anterior haptic.

[0010] Wherein, the portion of the first locking member located in the loading chamber abuts against the optical portion; or, the portion of the first locking member located in the loading chamber abuts against both the optical portion and the front haptic.

[0011] In some embodiments of the first aspect, the loading compartment further includes a loading port and a removable cover, the loading port being in communication with the loading chamber; the cover is switchable between a closed state that closes the loading port and an open state that opens the loading port.

[0012] In some embodiments of the first aspect, the pressure cap has a pressing part and the first locking hole, and in the closed state, the distance between the pressing part and the artificial lens is A, which satisfies: 0.1mm≤A≤0.5mm.

[0013] In some embodiments of the first aspect, the clamping portion includes at least one guide strip, the guide strip extending in the same direction as the implantation direction.

[0014] In some embodiments of the first aspect, the first limiting member includes a pair of protrusions disposed in the loading chamber, and the movement path of the implantation push rod lies between the pair of protrusions.

[0015] In some embodiments of the first aspect, the loading chamber further has an inlet and an outlet, wherein the inlet, the loading chamber and the outlet are sequentially connected in the implantation direction, and the implantation push rod has a first limiting portion at one end facing the inlet;

[0016] The pre-loaded intraocular lens implantation system also includes:

[0017] A cannula having a head end and a tail end, the head end being connected to the loading chamber, the cannula being connected to the inlet, and the implantation push rod passing through the cannula; wherein, a second locking hole is provided on the side wall of the head end, and the second locking hole is connected to the cannula;

[0018] The second locking member is switchable between a second separated state, which is separated from the head end of the sleeve, and a second connected state, which is connected to the head end of the sleeve; wherein, only in the second connected state, the second locking member is partially inserted into the second locking hole and the sleeve, and the portion of the second locking member located in the sleeve is located on the movement path of the first limiting portion.

[0019] In some embodiments of the first aspect, the first locking member and the second locking member are connected, and the first locking hole and the second locking hole extend in the same direction.

[0020] In some embodiments of the first aspect, the cannula has a first guide groove extending along the moving direction of the implantation push rod, and the implantation push rod has a first sliding portion located within the first guide groove, and the first sliding portion and the first guide groove are slidably engaged.

[0021] In some embodiments of the first aspect, the sleeve includes:

[0022] The tube body and the cover are provided. One end of the tube body is connected to the loading chamber, and the other end of the tube body is detachably connected to the cover. The cover is provided with a slide rail, which communicates with the tube body. The implantation push rod slides through the slide rail, and the guide groove is provided on the inner wall of the slide rail. The cover is provided with a second sliding part, and the inner wall of the tube body is provided with a second guide groove. The second guide groove and the first guide groove extend in the same direction. The second sliding part is located in the second guide groove, and the second sliding part and the second guide groove slide in cooperation.

[0023] In some embodiments of the first aspect, the pre-loaded intraocular lens implantation system further includes:

[0024] A telescopic spring is located inside the sleeve, and one end of the implantation push rod near the inlet passes through the telescopic spring. The head end of the sleeve has a second limiting part, and the implantation push rod has a third limiting part. One end of the telescopic spring abuts against the second limiting part, and the other end of the telescopic spring abuts against the third limiting part.

[0025] The embodiments of this application have the following advantages:

[0026] This application provides a pre-loaded intraocular lens (IOL) implantation system. A first locking member is switched to a first separated state to load an IOL into a loading chamber, with the rear end of the IOL abutting against a first limiting member. Then, the first locking member is switched to a first connected state, allowing it to be inserted into the loading chamber and abutting against the front end of the IOL. This dual limiting design of the first limiting member and the first locking member effectively prevents displacement of the IOL within the loading chamber, reducing the risk of deformation and damage caused by displacement. Furthermore, by ensuring the stability of the IOL within the loading chamber, the success rate of the surgery and postoperative visual outcomes are improved.

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 A schematic diagram of the structure of a pre-loaded intraocular lens implantation system provided in an embodiment of this application is shown;

[0030] Figure 2 This illustration shows a schematic diagram of the tube of a pre-loaded intraocular lens implantation system provided in an embodiment of this application from one perspective.

[0031] Figure 3 This illustration shows a schematic diagram of the tube of a pre-loaded intraocular lens implantation system provided in an embodiment of this application from another perspective.

[0032] Figure 4 A schematic diagram of the implant head of a pre-loaded intraocular lens implantation system provided in an embodiment of this application is shown;

[0033] Figure 5 A schematic diagram of the implantation pusher of a pre-loaded intraocular lens implantation system provided in an embodiment of this application is shown;

[0034] Figure 6 A schematic diagram of the structure of a cover for a pre-loaded intraocular lens implantation system provided in an embodiment of this application is shown;

[0035] Figure 7The diagram shows a schematic representation of the structure of a first locking member and a second locking member of a pre-loaded intraocular lens implantation system provided in an embodiment of this application.

[0036] Explanation of key component symbols:

[0037] 100-Inlet head; 200-Loading chamber; 210-Loading groove; 211-Loading cavity; 220-Slot; 230-Pressure cap; 231-First locking hole; 232-Pressure part; 240-Outlet; 300-Locking device; 310-First locking element; 311-First insertion end; 320-Second locking element; 321-Second insertion end; 400-Sleeve; 410-Tube body; 411-Second locking hole; 412-Limiting hole; 413-Second guide groove; 420-Block; 421-First guide groove; 422-Second sliding part; 500-Telescopic spring; 600-Implantation push rod; 610-First limiting part; 620-Elastic latch; 630-Third limiting part; 640-First sliding part; 700-First limiting element. Detailed Implementation

[0038] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0039] It should be noted that when an element is said to be "fixed" to another element, it can be directly on the other element or there may be an intervening element. When an element is said to be "connected" to another element, it can be directly connected to the other element or there may be an intervening element. Conversely, when an element is said to be "directly" on another element, there is no intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0040] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the template description is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] In related technologies, the intraocular lens (IOL) is a lens made of synthetic materials and used in ophthalmic surgery. It is currently a routine method for treating lens-related diseases such as cataracts. During surgery, the original lens is first removed through methods such as extracapsular extraction or phacoemulsification, and then an IOL is implanted into the eye using a pre-loaded implantation system. With the continuous development of society, cataract surgery has placed higher and higher demands on implantation systems, such as minimally invasive techniques and fully pre-loaded implantation.

[0044] Typically, an intraocular lens (IOL) implantation preloading system includes the implantation system body, an implantation plunger, and an IOL loading chamber. The plunger has a forked IOL clamping section at its tip, which holds the IOL within the loading chamber. As the plunger moves, the IOL automatically folds or curls after entering the delivery chamber until it is pushed out and into the eye, completing the implantation procedure. However, the IOL is only limited at its rear end within the loading chamber, which may allow it to shift forward, leading to pressure deformation and damage, thus affecting the product's effectiveness and potentially causing surgical failure.

[0045] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 7As shown, to solve the above-mentioned technical problems, this application provides a pre-loaded intraocular lens implantation system. The pre-loaded intraocular lens implantation system includes a loading chamber 200, an implantation pusher 600, a first limiting member 700, and a first locking member 310. The loading chamber 200 has a first locking hole 231, a loading chamber 211, and an implantation direction. The first locking hole 231 and the loading chamber 211 are connected. The loading chamber 211 is used to load the intraocular lens. The implantation pusher 600 can push the intraocular lens to move along the implantation direction. The first limiting member 700 is disposed in the loading chamber 200. Within 11, the first limiting member 700 is located outside the movement path of the implantation push rod 600, and the first limiting member 700 and the end of the intraocular lens located upstream in the implantation direction abut against each other; the first locking member 310 can switch between a first separated state separated from the loading chamber 200 and a first connected state connected to the loading chamber 200; wherein, only in the first connected state, the first locking member 310 is partially inserted through the first locking hole 231 and the loading chamber 211, and the portion of the first locking member 310 located in the loading chamber 211 abuts against the end of the intraocular lens located downstream in the implantation direction.

[0046] In the above embodiment, the first locking hole 231 is used to cooperate with the first locking member 310 to further fix the intraocular lens. The loading chamber 211 is used to load the intraocular lens. The loading chamber 200 has an inlet and an outlet 240, which are respectively connected to the loading chamber 211. The inlet, loading chamber 211, and outlet 240 are arranged sequentially in the implantation direction, thereby forming an implantation channel through the loading chamber 200. The implantation push rod 600 can be inserted into the inlet and moved along the implantation channel to push the intraocular lens out from the outlet 240 and implant it into the eyeball. The implantation push rod 600 can move along the implantation channel, and its front end has an intraocular lens clamping part with a fork-shaped structure for clamping the intraocular lens and pushing it into the implantation channel. The first limiting member 700 is disposed within the loading chamber 211, outside the movement path of the implantation pusher 600, and abuts against the end of the intraocular lens facing the inlet, preventing the intraocular lens from shifting in the direction opposite to the implantation direction. It should be noted that the extension direction of the implantation channel is the implantation direction; that is, the direction in which the implantation pusher 600 pushes the intraocular lens to move and enter the eyeball is the implantation direction. In other words, the intraocular lens has a posterior haptic, an optical portion, and an anterior haptic. The posterior haptic is located upstream of the implantation direction, and the anterior haptic is located downstream of the implantation direction, with the posterior haptic used to contact the pusher.

[0047] At the same time, when used in conjunction with the first locking member 310, the first locking member 310 can switch between at least two states:

[0048] First separation state: The first locking element 310 is separated from the loading chamber 200.

[0049] First connection state: The first locking element 310 is connected to the loading chamber 200.

[0050] In this application, the end of the intraocular lens facing the outlet 240 is designated as the front end, and the end of the intraocular lens facing away from the outlet 240 is designated as the rear end. In the first connected state, the first locking member 310 partially passes through the first locking hole 231 and the loading chamber 211, and the portion of the first locking member 310 located in the loading chamber 211 abuts against the end of the intraocular lens facing the outlet 240, thereby cooperating with the first limiting member 700 to achieve dual limiting of the intraocular lens, thereby restricting the movement of the intraocular lens in the extension direction of the implantation channel, that is, restricting the forward and backward movement of the intraocular lens.

[0051] For example, a first locking hole 231 is designed on the loading chamber 200, and the position of the first locking hole 231 corresponds to the loading cavity 211 so that the first locking member 310 can pass through and fix the intraocular lens. The loading cavity 211 is used to place the intraocular lens, with sufficient internal space to accommodate the intraocular lens, and its shape matches the intraocular lens to ensure that the intraocular lens is not subjected to unnecessary pressure during loading. The implantation channel extends from the loading cavity 211 to the outside of the loading chamber 200, forming a communicating path through which the implantation pusher 600 pushes the intraocular lens into the eye. The front clamping part of the implantation pusher 600 has a fork-shaped structure, which can firmly clamp the intraocular lens and smoothly push it into the implantation channel. The implantation pusher 600 moves along the implantation channel to ensure that the intraocular lens maintains the correct orientation and position during advancement. The first limiting member 700 is disposed in the loading cavity 211 but not in the movement path of the implantation pusher 600 to avoid interfering with the movement of the implantation pusher 600. The first locking member 310 abuts against the end of the artificial lens facing the inlet to prevent the artificial lens from shifting forward, thereby protecting the artificial lens from compression and deformation.

[0052] Furthermore, in the first separated state: the first locking member 310 is separated from the loading chamber 200, at which point the intraocular lens can be freely inserted into the loading cavity 211. In the first connected state: the first locking member 310 is connected to the loading chamber 200, partially passing through the first locking hole 231 and the loading cavity 211, and abutting against the end of the intraocular lens facing the outlet 240, further fixing the intraocular lens and preventing it from shifting forward within the loading chamber 200. In other words, in the first connected state, the first locking member 310 and the first limiting member 700 work together to form a double limiting effect on the intraocular lens, ensuring the stability and safety of the intraocular lens within the loading chamber 200.

[0053] Obviously, by applying the pre-loaded intraocular lens implantation system provided in this application, the first locking member 310 is switched to the first separated state to load the intraocular lens into the loading chamber 211, and the rear end of the intraocular lens abuts against and is limited by the first limiting member 700. Then, the first locking member 310 is switched to the first connected state, thereby inserting the first locking member 310 into the loading chamber 211 and abutting against and being limited by the front end of the intraocular lens. Thus, through the dual limiting design of the first limiting member 700 and the first locking member 310, displacement of the intraocular lens within the loading chamber 200 is effectively prevented, reducing the risk of deformation and damage caused by displacement. Furthermore, by ensuring the stability of the intraocular lens within the loading chamber 200, the success rate of the surgery and postoperative visual results are improved.

[0054] like Figure 3 and Figure 4 As shown, in some embodiments, the pre-loaded intraocular lens implantation system further includes a slot 220, a loading slot 210, an insertion head 100, and a cannula 400. The insertion head 100 has an injection channel and is connected to the slot 220. A cap 230 is hinged to one side of the slot 220. The cannula 400 is connected to the loading slot 210, and the loading slot 210 is inserted into the slot 220, communicating with the injection channel. The cap 230 covers the slot 220 and can close the loading slot 210 to form a loading chamber 200. The end of the loading slot 210 near the insertion head 100 is an outlet 240, and the end of the loading slot 210 away from the insertion head 100 is an inlet. Of course, in other embodiments, the insertion head 100 and the outlet 240 are connected, and the cannula 400 and the inlet are connected. That is, the loading chamber 200 is set as an independent module.

[0055] For example, the slot 220 of the import head 100 and the loading slot 210 engage. Of course, other methods may be used in other embodiments.

[0056] In some embodiments, in the first connection state, the portion of the first locking member 310 located in the loading chamber 211 is located in the gap between the optical portion and the anterior haptic of the intraocular lens; wherein, the portion of the first locking member 310 located in the loading chamber 211 abuts against the optical portion; or, the portion of the first locking member 310 located in the loading chamber 211 abuts against both the optical portion and the anterior haptic.

[0057] In these embodiments, the locking hole is located at the top of the loading chamber 200 for easy direct observation and operation. In the first separated state, the first locking member 310 is separated from the loading chamber 200; in the first connected state, the first locking member 310 passes through the first locking hole 231, and its portion located in the loading chamber 211 is located in the gap between the optical portion and the anterior haptic of the intraocular lens, and abuts against and limits the optical portion.

[0058] Alternatively, in other embodiments, the portion of the first locking member 310 located in the loading chamber 211 abuts against the optical portion and the anterior haptic, thereby achieving precise positioning of the intraocular lens.

[0059] Obviously, either of the above methods can be used in conjunction with the first limiting component 700 to limit the intraocular lens in the implantation channel.

[0060] For example, the first locking member 310 has a first insertion end 311, which, in the first connection state, passes through the first locking hole 231, and the portion of which is located in the loading chamber 211 is located in the gap between the optical portion of the artificial lens and the anterior haptic.

[0061] like Figure 3 and Figure 4 As shown, in some embodiments, the loading chamber 200 also has a loading port and a removable cap 230, the loading port, the implantation channel and the loading chamber 211 are connected, and the loading port is located on the hole wall of the implantation channel; the cap 230 can switch between a closed state that closes the loading port and an open state that opens the loading port.

[0062] In these embodiments, the design of the removable cap 230 provides additional protection against contamination or damage to the intraocular lens during loading.

[0063] Obviously, when the lens is open, it is easy to observe and adjust the position of the intraocular lens; when it is closed, it protects the intraocular lens from external contamination.

[0064] For example, the pressure cap 230 has a sliding structure that allows for quick opening and closing. Alternatively, in other embodiments, the pressure cap 230 has a knob structure that allows for quick opening and closing of the removable pressure cap 230; or, the pressure cap 230 has a snap-fit ​​structure that allows for quick opening and closing.

[0065] like Figure 4 As shown, in some embodiments, the pressure cap 230 has a pressing part 232 and a first locking hole 231. In the closed state, the distance between the pressing part 232 and the artificial lens is A, and satisfies: 0.1mm≤A≤0.5mm.

[0066] In these embodiments, when pressed, the pressing part 232 and the artificial lens do not come into contact. Its function is to restrict the vertical position of the lens but allow a certain amount of movement. The first locking hole 231 is provided on the cover 230, and the pressing part 232 is provided at one end of the cover 230 facing the loading chamber 211. The pressing part 232 and the upper end of the artificial lens make slight contact to achieve the limit, so as to avoid the artificial lens from shaking.

[0067] For example, the distance A between the pressing part 232 and the artificial lens can be 0.1mm, 0.2mm, 0.3mm, 0.4mm or 0.5mm, etc.

[0068] In some embodiments, the clamping part 232 includes at least one guide strip, the guide strip extending in the same direction as the implantation channel.

[0069] In these embodiments, the clamping part 232 is specifically in the form of a guide strip. Utilizing the characteristic that the guide strip extends in the same direction along the implantation channel, it can ensure that the artificial lens can be abutted and limited at various points, and can also reduce the contact area between the clamping part 232 and the artificial lens, thereby reducing the frictional resistance between the artificial lens and the guide strip. This facilitates the movement of the artificial lens and avoids wear on the artificial lens.

[0070] For example, in this embodiment, there are two guide strips. Of course, in other embodiments, there may be one, three, four, five, etc.

[0071] like Figure 3 As shown, in some embodiments, the first limiting member 700 includes a pair of protrusions disposed in the loading chamber 211, and the movement path of the implantation push rod 600 is located between the pair of protrusions.

[0072] In these embodiments, the primary purpose of the above design is to ensure that the intraocular lens can be accurately placed into the predetermined position along the implantation direction. Clearly, by defining the movement path of the implantation pusher 600 by the pair of protrusions within the loading chamber 211, the accuracy of the implant's movement along the intended path can be improved. Furthermore, interference from the protrusions with the movement of the implantation pusher 600 can be avoided.

[0073] Furthermore, the gap between these protrusions improves the placement accuracy of the intraocular lens, helping to prevent unnecessary displacement or rotation of the lens during its movement.

[0074] For example, the portion of the protrusion that contacts the rear end of the intraocular lens is set as a slope, thereby forming an flared shape between the slopes of a pair of protrusions, which is conducive to positioning and placing the intraocular lens.

[0075] Of course, in other embodiments, the pressing part 232 does not necessarily have to be a pair of protrusions, as long as it can limit the push rod, such as a column penetrating a drilled push rod, etc., as long as it can achieve a basically equivalent effect, no specific limitation is made here.

[0076] like Figure 3 , Figure 5 and Figure 7As shown, in some embodiments, the end of the implanted push rod 600 facing the inlet has a first limiting portion 610;

[0077] The pre-loaded intraocular lens implantation system also includes a cannula 400 and a second locking member 320. The cannula 400 has a head end and a tail end, the head end is connected to the loading chamber 200, the cannula 400 is connected to the inlet, and the implantation push rod 600 passes through the cannula 400. The side wall of the head end is provided with a second locking hole 411, which is connected to the cannula 400. The second locking member 320 can switch between a second separated state, which is separated from the head end of the cannula 400, and a second connected state, which is connected to the head end of the cannula 400. Only in the second connected state is the second locking member 320 partially inserted into the second locking hole 411 and the cannula 400, and the portion of the second locking member 320 located in the cannula 400 is located on the movement path of the first limiting part 610.

[0078] In these embodiments, the implant pusher 600 has one end with a first limiting portion 610 facing the inlet to limit the implant pusher 600 and prevent it from moving toward the inlet before the implantation procedure is performed, thereby compressing and damaging the intraocular lens.

[0079] The cannula 400 connects to the loading chamber 211 (or loading compartment 200). The cannula 400 has a head end and a tail end, with the head end connected to the loading chamber 211. The entire cannula 400 is through, allowing the implantation pusher 600 to pass through. The second locking member 320 is a switchable component that can switch between a state separated from the head end of the cannula 400 (second separated state) and a state connected to it (second connected state). In the second connected state, the second locking member 320 partially penetrates the second locking hole 411 on the side wall of the head end of the cannula 400 and the interior of the cannula 400, and is located in the movement path of the first limiting portion 610 of the implantation pusher 600. This design prevents accidental advancement; that is, when the second locking member 320 is in the second connected state, it can block the first limiting portion 610 of the implantation pusher 600 from continuing to advance, thereby avoiding damage to the intraocular lens due to operational errors. Obviously, the above settings allow the second locking member 320 to release the restriction on the implantation push rod 600 in the second separated state. At this time, the artificial lens can be implanted into the eyeball by pushing the implantation push rod 600.

[0080] It is important to note that the operational sequence must be maintained during the procedure. By controlling the state transition of the second locking element 320, the intraocular lens is only allowed to be fully ejected during the implantation action. This mechanism helps reduce risks during the surgery, ensuring that each step is performed in the predetermined manner, thereby improving overall safety and success rate.

[0081] For example, the second locking member 320 has a pair of second insertion ends 321, which can pass through the second locking hole 411 and the tube body 410. The implant push rod 600 has stepped surfaces on both sides of the end facing the inlet, and the stepped surfaces form the first limiting part 610. There is a gap between the pair of second insertion ends 321. When the pair of second insertion ends 321 are located in the tube body 410, the end of the implant push rod 600 facing the inlet is located between the pair of second insertion ends 321, and the second insertion and the corresponding stepped surface abut.

[0082] like Figure 7 As shown, in some embodiments, the first locking member 310 and the second locking member 320 are connected, and the first locking hole 231 and the second locking hole 411 extend in the same direction.

[0083] In these embodiments, the first locking member 310 and the second locking member 320 can be simultaneously installed and removed, making them more convenient to use. For example, the first locking member 310 is inserted into the first locking hole 231, and the second locking member 320 is inserted into the second locking hole 411.

[0084] Furthermore, in this embodiment, the first locking member 310 and the second locking member 320 are integrally formed. Of course, in other embodiments, the first locking member 310 and the second locking member 320 may also be fixedly connected by means of adhesive bonding or other methods.

[0085] For example, the first locking member 310 and the second locking member 320 are two parts of the locking device 300. By controlling the locking device 300, the first locking member 310 and the second locking member 320 can be driven to move synchronously.

[0086] like Figure 5 , Figure 6 and Figure 7 As shown, in some embodiments, the cannula 400 has a first guide groove 421, which extends along the moving direction of the implantation push rod 600, and the implantation push rod 600 has a first sliding part 640, which is located in the first guide groove 421, and the first sliding part 640 and the first guide groove 421 are slidably engaged.

[0087] In these embodiments, the above-described cooperation method ensures that the implantation push rod 600 is in a centered position, avoiding the position of the implantation push rod 600 being too high or too low, which would result in greater frictional resistance during injection. At the same time, it ensures that the implantation push rod 600 and the intraocular lens are at the same horizontal position, allowing the intraocular lens to be smoothly ejected.

[0088] For example, in this embodiment, the sleeve 400 is symmetrically provided with a pair of first guide grooves 421 in the circumferential direction, and correspondingly, the implantation push rod 600 is provided with a first sliding part 640 on the corresponding side. Of course, in other embodiments, the sleeve 400 may have four first guide grooves 421 evenly distributed in the circumferential direction, etc.

[0089] like Figure 1 , Figure 2 and Figure 6 As shown, in some embodiments, the sleeve 400 includes a tube body 410 and a cover 420. One end of the tube body 410 is connected to the loading chamber 200, and the other end of the tube body 410 is detachably connected to the cover 420. The cover 420 is provided with a slide rail, which communicates with the tube body 410. The implantation push rod 600 slides through the slide rail, and a first guide groove 421 is provided on the inner wall of the slide rail. The cover 420 is provided with a second sliding part 422, and the inner wall of the tube body 410 is provided with a second guide groove 413. The second guide groove 413 and the first guide groove 421 extend in the same direction. The second sliding part is located in the second guide groove 413, and the second sliding part 422 and the second guide groove 413 slide in cooperation.

[0090] In these embodiments, the cover 420 is provided with a second sliding portion 422 to form an asymmetrical structure that prevents the cover 420 and the implant push rod 600 from being installed in reverse. Furthermore, the second sliding portion 422 also prevents the cover 420 from being installed in reverse with the sleeve 400.

[0091] In other words, the second sliding part 422 needs to be aligned and inserted into the second guide groove 413 before the cover 420 can be installed on the tube body 410; otherwise, it cannot be installed.

[0092] For example, the cover 420 and the tube body 410 are interference-fitted, which facilitates subsequent disassembly and maintenance and simplifies the structure.

[0093] like Figure 1 As shown, in some embodiments, the pre-loaded intraocular lens implantation system further includes a telescopic spring 500 located inside the cannula 400, and one end of the implantation push rod 600 near the inlet passes through the telescopic spring 500. The head end of the cannula 400 has a second limiting portion, and the implantation push rod 600 has a third limiting portion 630. One end of the telescopic spring 500 abuts against the second limiting portion, and the other end of the telescopic spring 500 abuts against the third limiting portion 630.

[0094] In these embodiments, during the implantation of the intraocular lens, the implantation pusher 600 needs to be pushed to compress the telescopic spring 500 in order to eject the intraocular lens. Clearly, this structural design prevents the intraocular lens from being ejected too quickly.

[0095] For example, the second limiting part includes a limiting plate, which is installed inside the tube body 410 and has a through hole. The end of the implanted push rod 600 near the inlet passes through the through hole.

[0096] The third limiting part 630 includes a stepped surface implanted on the push rod 600, and the stepped surface abuts against the telescopic spring 500.

[0097] like Figure 2 and Figure 5 As shown, in some embodiments, a limiting hole 412 is provided on the tail end sidewall of the sleeve 400. The limiting hole 412 is connected to the sleeve 400. The implantation push rod 600 is provided with an elastic latch 620. The limiting hole 412 is located on the moving path of the elastic latch 620. The elastic latch 620 can engage with the limiting hole 412.

[0098] Obviously, the above-mentioned configuration can limit the stroke of the implantation push rod 600 in the opposite direction to the implantation direction through the limiting hole 412 and the elastic latch 620 structure, and then, together with the second locking member 320, limit the stroke range of the implantation push rod 600.

[0099] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limitations; therefore, other examples of exemplary embodiments may have different values.

[0100] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0101] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application.

Claims

1. A preloaded intraocular lens implant system, characterized in that, The preloaded intraocular lens implant system comprises: a loading bin and an implant push rod, the loading bin having a first locking hole, a loading chamber and an implant direction, the first locking hole and the loading chamber being communicated, the loading chamber being used for loading an intraocular lens, the implant push rod being capable of pushing the intraocular lens to move in the implant direction; a first limiting member, the first limiting member being arranged in the loading chamber, the first limiting member being located outside the moving path of the implant push rod, and the first limiting member and an end of the intraocular lens located upstream of the implant direction being in abutment; a first locking member, the first locking member being capable of being switched between a first separated state of being separated from the loading bin and a first connected state of being connected with the loading bin; wherein only in the first connected state, the first locking member is partially arranged in the first locking hole and the loading chamber, and an end of the first locking member located in the loading chamber is in abutment with an end of the intraocular lens located downstream of the implant direction.

2. The pre-loaded intraocular lens implant system of claim 1, wherein, In the first connected state, the part of the first locking member located in the loading chamber is located in the gap between the optical part and the anterior haptics of the intraocular lens; wherein the part of the first locking member located in the loading chamber is in abutment with the optical part, or the part of the first locking member located in the loading chamber is in abutment with the optical part and the anterior haptics respectively.

3. The pre-loaded intraocular lens implant system of claim 2, wherein, The loading bin further has a loading port and a detachable cover, the loading port and the loading chamber being communicated; the cover being capable of being switched between a closed state of closing the loading port and an open state of opening the loading port.

4. The pre-loaded intraocular lens implant system of claim 3, wherein, The cover has a pressing part and the first locking hole, in the closed state, the distance between the pressing part and the intraocular lens is A, and it satisfies: 0.1mm≤A≤0.5mm.

5. The pre-loaded intraocular lens implant system of claim 4, wherein, The pressing part comprises at least one guiding pressing strip, the extension direction of the guiding pressing strip is arranged in the same direction as the implant direction.

6. The pre-loaded intraocular lens implant system of claim 1, wherein, The first limiting member comprises a pair of protrusions, the pair of protrusions being arranged in the loading chamber, and the moving path of the implant push rod being located between the pair of protrusions.

7. The pre-loaded intraocular lens implant system of claim 1, wherein, The loading bin further has an inlet and an outlet, in the implant direction, the inlet, the loading chamber and the outlet are sequentially communicated, and an end of the implant push rod towards the inlet has a first limiting part; The preloaded intraocular lens implant system further comprises: a sleeve, the sleeve having a head end and a tail end, the head end being connected with the loading bin, the sleeve being communicated with the inlet, and the implant push rod being arranged in the sleeve; wherein the side wall of the head end is provided with a second locking hole, the second locking hole being communicated with the sleeve; a second locking member, the second locking member being capable of being switched between a second separated state of being separated from the head end of the sleeve and a second connected state of being connected with the head end of the sleeve; wherein only in the second connected state, the second locking member is partially arranged in the second locking hole and the sleeve, and the part of the second locking member located in the sleeve is located on the moving path of the first limiting part.

8. The pre-loaded intraocular lens implant system of claim 7, wherein, The first locking member and the second locking member are connected, and the first locking hole and the second locking hole are arranged to extend in the same direction.

9. The pre-loaded intraocular lens implant system of claim 7, wherein, The sleeve has a first guide sliding groove, the first guide sliding groove is arranged to extend along the moving direction of the implant push rod, the implant push rod has a first sliding part, the first sliding part is located in the first guide sliding groove, and the first sliding part and the first guide sliding groove are in sliding fit.

10. The pre-loaded intraocular lens implant system of claim 9, wherein, The sleeve comprises: The tube body and the cover, one end of the tube body is connected with the loading chamber, the other end of the tube body is detachably connected with the cover, the cover is provided with a sliding channel, the sliding channel is communicated with the tube body, the implant push rod is slidably arranged in the sliding channel, and the guide sliding groove is arranged on the inner wall of the sliding channel; wherein, the cover is provided with a second sliding part, the inner wall of the tube body is provided with a second guide sliding groove, the second guide sliding groove and the first guide sliding groove are arranged to extend in the same direction, the second sliding part is located in the second guide sliding groove, and the second sliding part and the second guide sliding groove are in sliding fit.

11. The pre-loaded intraocular lens implant system of claim 7, wherein, The preloaded intraocular lens implant system further comprises: The telescopic spring is located in the sleeve, one end of the implant push rod is arranged in the telescopic spring, the head end of the sleeve has a second limiting part, the implant push rod has a third limiting part, one end of the telescopic spring abuts against the second limiting part, and the other end of the telescopic spring abuts against the third limiting part.

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