Hydrophilic preloaded intraocular lens injector

Abstract

The hydrophilic preloaded intraocular lens injector comprises an injector main body and an intraocular lens preloading device, the injector main body comprises a push cylinder, a push rod and a push head, the push head is installed at the front end of the push rod, the push rod is movably arranged in the push cylinder in a penetrating mode, and the push head can enter an implanter to inject an intraocular lens. The intraocular lens preassembling device comprises an implanting device and a lens box, an intraocular lens is preassembled in the implanting device, the intraocular lens is positioned and installed in the implanting device through a lens fixing block, the implanting device is loaded in the lens box, and the pushing cylinder can be inserted into the lens box to be fixedly connected with the implanting device and can automatically separate the lens fixing block from the implanting device. The crystal is preloaded in a sterile workshop of a factory, so that the risk of pollution can be reduced, the infection opportunity is less, a patient recovers quickly, the tedious work of loading the crystal by a doctor is omitted, the workload of the doctor is reduced, and meanwhile, the probability that the crystal is crushed and flows into the body of the patient when the crystal is loaded into an instrument is also reduced.

Description

Technical Field

[0001] The invention belongs to the field of intraocular lens injectors, and in particular relates to a hydrophilic pre-installed intraocular lens injector. Background Art

[0002] Artificial lenses are currently the most effective method for correcting aphakic refraction. The existing hydrophilic pre-installed intraocular lens implantation system requires the operator to use both hands to operate. First, use tweezers to take the intraocular lens out of the packaging box and place it in the intraocular lens implantation device, then use the folding device to fold the intraocular lens, and finally implant it into the eye through the implantation device body. The implantation process is complicated and cumbersome, and there is a risk of bacterial infection during use or storage. It is very inconvenient to use and prone to various uncontrollable problems. For example, when using tweezers to clamp the intraocular lens, the wrong clamping angle or poor force control will cause irreversible damage to the intraocular lens. Moreover, the intraocular lens needs to be manually folded before being placed in the implantation device, and the implantation angle or state cannot be well distinguished. The operator is prone to misoperation, which increases the risk of surgery.

[0003] The existing CN215779107U discloses a preinstalled intraocular lens implantation system, comprising an implantation push tube, an implantation push rod which moves axially along the implantation push tube, and an intraocular lens loading bin which is detachably connected to the implantation push tube, wherein the central axes of the implantation push rod, the implantation push tube and the intraocular lens loading bin coincide with each other and are in the same direction as the diameter direction of the intraocular lens in an unfolded state loaded in the intraocular lens loading bin; the implantation push tube comprises a push tube body, a placement groove and an implantation channel of the intraocular lens loading bin which are sequentially connected along the implantation direction, the front end of the implantation push rod has a U-shaped / Y-shaped clamping fork, the length of the clamping fork is at least greater than or equal to the radius of the intraocular lens, the diameter of the implantation channel for folding or curling the intraocular lens decreases along the implantation direction and its outlet end is beveled. The implant push rod of the utility model is pre-assembled with the push tube body of the implant push tube, the artificial lens loading bin is inserted into the placement groove of the implant push tube, the implant push rod is pushed along the implantation direction, the implant push rod passes through the push tube body and the placement groove in turn and enters the artificial lens loading bin, the artificial lens is clamped by the clamping fork at the front end, as the implant push rod is pushed forward, the artificial lens is pushed to the entrance of the implantation channel, the inner wall of the implantation channel gradually narrows, the artificial lens is squeezed to further curl, the artificial lens is fully curled when it reaches the implantation channel exit, the implant push rod finally pushes the artificial lens out of the implantation channel and into the eye, completing the implantation operation. When this structure is pushed, the artificial lens needs to be clamped by the clamping fork at the front end, which is easy to cause damage to the lens, and no matter it is used for hydrophobic artificial lens or hydrophilic artificial lens, it needs to be installed in the placement groove of the implant push tube after taking out the loading bin, and there is still a certain risk of infection. Summary of the invention

[0004] In view of the problems existing in the above background technology, the purpose of the present invention is to provide a hydrophilic pre-installed intraocular lens injector which is simple to operate, has a reasonable structure, avoids bacterial infection, and prevents misoperation.

[0005] The technical solution adopted by the present invention is:

[0006] A hydrophilic preloaded intraocular lens pusher comprises an injector body and an intraocular lens preloading device, wherein the injector body comprises a push tube, a push rod and a push head, wherein the push head is mounted at the front end of the push rod, the push rod is movably arranged in the push tube and enables the push head to enter the implanter to inject the intraocular lens, wherein the intraocular lens preloading device comprises an implanter and a crystal box, wherein the implanter is preloaded with an intraocular lens, wherein the intraocular lens is positioned and installed in the implanter through a crystal fixing block, wherein the implanter is loaded in the crystal box, the push tube can be inserted into the crystal box and fixedly connected to the implanter and can automatically detach the crystal fixing block from the implanter.

[0007] Furthermore, the implanter includes a lens cavity for placing the artificial lens, the cavity bottom of the lens cavity is an arc-shaped structure, the lens cavity is provided with a wing cover that can open and close the cavity, and the lens fixing block is detachably mounted on the upper surface of the wing cover.

[0008] Furthermore, the lens fixing block is provided with two fixing columns for fixing the intraocular lens, the fixing columns pass through the wing cover and enter the cavity to cooperate with the intraocular lens for fixing, wherein one or both fixing columns are deformable structures. The lens fixing block of the present invention is buckled on the wing cover through the deformable structure, and can be separated from the wing plate with a little force.

[0009] Furthermore, the front end of the push cylinder includes an upper end face and a lower end face that are not connected to the side, the lower end face is consistent in shape with the lower surface of the crystal cavity of the implanter and can cover the lower surface of the crystal cavity, and a notch that runs through the front side is provided in the middle of the upper end face, and the upper end face can be inserted between the crystal fixing block and the wing cover and can automatically detach the crystal fixing block from the implanter.

[0010] Furthermore, the lower surface of the crystal fixing block facing the main body of the pusher and the upper end surface of the front end of the pusher are both inclined structures that cooperate with each other to automatically separate the crystal fixing block from the implanter.

[0011] Furthermore, the wing cover is provided with limit plates on both sides and the front side of the crystal fixing block, and the limit plates on both sides cooperate with the corresponding side surfaces of the crystal fixing block to form a pushing channel, and the upper end surface of the front end of the push cylinder protrudes with a symmetrically arranged guide plate, and the guide plate can be pushed forward along the pushing channel.

[0012] Furthermore, the upper end surface of the front end of the push tube and the upper surface of the wing cover, as well as the wing cover and the lower part of the crystal cavity can be buckled and fixed.

[0013] Furthermore, the front end of the lens cavity is provided with a head for the artificial lens to be pushed into the eye, the head has a port, the head is a flat structure, the cavity in the head from the lens cavity to the port is a structure that changes from wide to narrow, the upper edge of the cross-section of the cavity is a straight structure, and the lower edge is an arc structure, and the cavity and the cavity are smoothly connected.

[0014] Furthermore, a push plate for pushing the push rod forward is provided at the rear end of the push rod, cantilevers are provided on both sides of the push rod, and a one-way buckle is protruding from the cantilever and engaged with the inner wall of the push tube to initially position the push rod.

[0015] Furthermore, the rear end of the push cylinder is provided with a push cylinder snap-on socket which cooperates with the one-way snap to initially position the push rod, and the rear end of the push cylinder is provided with a hand-held arm which cooperates with the push plate to push the push rod forward, and the hand-held arm is longitudinally perpendicular to the push cylinder and protrudes from the upper and lower surfaces of the push cylinder.

[0016] Compared with the prior art, the present invention has the following significant advantages: the crystal is pre-installed in the factory's sterile workshop, which not only reduces the risk of contamination, reduces the chance of infection, and speeds up patient recovery, but also saves the doctor from the tedious work of installing the crystal, reduces the doctor's workload, and also reduces the probability of the crystal being crushed when it is installed into the instrument and flowing into the patient's body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The structure of the present invention is schematically shown in FIG. Figure 1 .

[0018] Figure 2 The structure of the present invention is schematically shown in FIG. Figure 2 .

[0019] Figure 3 The explosion structure of the present invention is schematically shown in FIG. Figure 1 .

[0020] Figure 4 The explosion structure of the present invention is schematically shown in FIG. Figure 2 .

[0021] Figure 5 It is a partial structural explosion schematic diagram of the present invention.

[0022] Figure 6 It is a schematic diagram of the use structure of the push injector body of the present invention being inserted into the implanter.

[0023] Figure 7 It is a schematic diagram of the front end enlarged structure of the pusher of the present invention.

[0024] Figure 8 It is a schematic diagram of the matching structure of the implanter and the lens fixer of the present invention.

[0025] Fig. 9 It is a structural schematic diagram of the implanter of the present invention.

[0026] In the figure: 10-injector body; 11-push rod; 111-push plate; 112-cantilever; 113-one-way buckle; 12-push cylinder; 121-upper end surface; 122-lower end surface; 123-slot; 124-guide plate; 125-buckle mouth; 126-push cylinder buckle; 127-handheld arm; 13-push head; 20-intraocular lens pre-installation device; 21-crystal fixing block; 211-fixing column; 22-implant; 221-crystal cavity; 222-cavity; 223-wing cover; 224-head; 225-connecting through hole; 226-limiting plate; 227-triangular fastener; 228-cavity; 229-port; 23-crystal box. DETAILED DESCRIPTION

[0027] The present invention is further described below in conjunction with specific embodiments, but the present invention is not limited to these specific embodiments. Those skilled in the art should recognize that the present invention covers all possible alternatives, improvements and equivalents within the scope of the claims.

[0028] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more, unless otherwise clearly defined.

[0029] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0031] See also Figure 1-9 The present embodiment provides a hydrophilic preloaded intraocular lens pusher, comprising a pusher body 10 and an intraocular lens preloading device 20, wherein the pusher body 10 comprises a push tube 12, a push rod 11, and a push head 13, wherein the push head 13 is installed at the front end of the push rod 11, and the push rod 11 is movably arranged in the push tube 12 and enables the push head 13 to enter the implanter 22 to push the intraocular lens, wherein the intraocular lens preloading device 20 comprises an implanter 22 and a crystal box 23, wherein the implanter 22 is preloaded with an intraocular lens, wherein the intraocular lens is positioned and installed in the implanter 22 through a crystal fixing block 21, and the implanter 22 is loaded in the crystal box 23, wherein the push tube 12 can be inserted into the crystal box 23 and fixedly connected to the implanter 22 and can automatically detach the crystal fixing block 21 from the implanter 22.

[0032] The implanter 22 of this embodiment includes a crystal cavity 221 for placing an artificial lens. The bottom of the cavity 222 in the crystal cavity 221 is an arc-shaped structure. The front end of the crystal cavity 221 is provided with a head 224 for the artificial lens to be pushed into the eye. The head 224 has a port 229. The head 224 is a flat structure. The cavity 228 in the head 224 from the crystal cavity 221 to the port 229 is a structure that changes from wide to narrow. The upper edge of the cross section of the cavity 228 is a straight structure, and the lower edge is an arc-shaped structure. The cavity 228 and the cavity 222 are smoothly connected. The crystal cavity 221 is provided with a wing cover 223 that can open and close the cavity 222. One side of the wing cover 223 is hingedly connected to the crystal cavity 221, and the other side is buckled and fixed. The wing cover 223 is provided with two connecting through holes 225 for fixing the crystal fixing block 21. The wing cover 223 is provided with limit plates 226 on both sides and the front side of the crystal fixing block 21. The limit plates 226 on both sides cooperate with the corresponding side surfaces of the crystal fixing block 21 to form a push-in channel. The wing plate 223 is fixedly connected with the front end of the push cylinder 12 by buckling. Specifically, two triangular fasteners 227 are protruding from the upper surface of the wing plate 223. The triangular fasteners 227 can buckle with the front end of the push cylinder 12 so that the push cylinder 12 is fixedly connected with the implanter 22.

[0033] The crystal fixing block 21 described in this embodiment is detachably mounted on the upper surface of the wing cover 223. The crystal fixing block 21 is provided with two fixing columns 211 for fixing the artificial lens. The fixing columns 211 pass through the connecting through hole 225 of the wing cover 223 and enter the cavity 222 to cooperate with the artificial lens to fix the artificial lens. In this embodiment, one of the fixing columns 211 is a deformable structure, and of course, both fixing columns 211 can also be deformable structures. The deformable structure is a longitudinal groove on the fixing column 211, and the end is a conical structure, which is easy to install and disassemble. The crystal fixing block 21 of the present invention is buckled on the wing cover 223 through a deformable structure, and can be separated from the wing plate 223 with a little force. The lower surface of the side of the crystal fixing block 21 facing the main body 10 of the pusher is provided with an inclined surface structure that cooperates with the front end of the push cylinder 12 to automatically separate the crystal fixing block 21 from the implanter.

[0034] The front end of the push tube 12 described in this embodiment includes an upper end face 121 and a lower end face 122 that are not connected on the side. The lower end face 122 is consistent with the shape of the lower surface of the crystal cavity 221 of the implanter 22 and can cover the lower surface of the crystal cavity 221. The middle of the upper end face 121 is provided with a notch 123 that runs through the front side. The upper end face 121 can be inserted between the crystal fixing block 21 and the wing cover 223 and can automatically separate the crystal fixing block 21 from the implanter 22. The front side of the upper end face 121 is also a sloped structure that cooperates with the inclined surface structure of the crystal fixing block 21 to automatically separate the crystal fixing block 21 from the implanter 22. The upper end face 121 protrudes with a symmetrically arranged guide plate 124, which can be pushed forward along the push-in channel to ensure the reliability of the insertion of the push tube 12. The upper end face 121 is provided with a buckle mouth 125 that cooperates and fixes with the triangular buckle 227 of the wing cover 223. The rear end of the push cylinder 12 is provided with a push cylinder snap fit 126 which cooperates with the push rod 11 to initially position the push rod. The rear end of the push cylinder 12 is provided with a hand-held arm 127 which cooperates with the push plate 111 to push the push rod 11 forward. The hand-held arm 127 is longitudinally perpendicular to the push cylinder 12 and protrudes from the upper and lower surfaces of the push cylinder 12.

[0035] The rear end of the push rod 11 of this embodiment is provided with a push plate 111 for pushing the push rod 11 forward, and cantilevers 112 are provided on both sides of the push rod 11. The cantilevers 112 are provided with a one-way buckle 113 that is engaged with the inner wall of the push tube 12 to initially position the push rod. The hand contact surface of the push plate 111 is provided with an anti-slip convex point structure, and can also be anti-slip grooves.

[0036] The push tube 12, the push rod 11, the push head 13 and the implanter 22 described in this embodiment are all flat structures. The push head 13 is a silicone push head.

[0037] When the intraocular lens is stored and transported, it is necessary to pre-install the intraocular lens into the implanter 22. First, the lens fixing block 21 is installed on the wing cover 223. At this time, the fixing column 211 protrudes from the inner surface of the wing cover 223. The wing cover 223 is opened, and the two ends of the intraocular lens are respectively placed on the two fixing columns 211, and then the wing cover 223 is closed. After the implanter 22 and the lens fixing block 21 are fixedly installed, they are inserted into the crystal box 23, and physiological saline is added to seal it. That is, the crystal box 23 is sealed during storage and transportation.

[0038] When the present invention is used, first open the crystal box 23 that has been sterilized by wet heat after being sealed with aluminum foil, hold the push tube 12, insert the front end of the pusher body 10 into the crystal box 7, align it with the implanter 22 for assembly, and when a "click" sound is heard, the front end of the push tube 12 is fixedly connected to the implanter 22 to form a pusher. During the assembly process, the lens fixing block 21 will automatically detach from the implanter 22 under the action of the front end of the push tube 12, and the pusher can be completely taken out at this time. Subsequently, an ophthalmic viscoelastic can be injected through the injection port on the implanter 22 until the ophthalmic viscoelastic fills the cavity. Insert the tip of the implanter 22 into the surgical incision, push the push rod 11 axially, and implant the artificial lens into the eye.

[0039] The crystal of the present invention is pre-installed in a sterile workshop of the factory, which not only reduces the risk of contamination, reduces the chance of infection, and speeds up the recovery of patients, but also saves doctors from the tedious work of installing the crystal, reduces the workload of doctors, and also reduces the probability of the crystal being crushed when it is installed into the instrument and flowing into the patient's body.

Claims

1. A hydrophilic preloaded intraocular lens pusher, comprising a pusher body (10) and an intraocular lens preloading device (20), wherein the pusher body (10) comprises a pusher tube (12), a pusher rod (11), and a pusher head (13), wherein the pusher head (13) is mounted at the front end of the pusher rod (11), and the pusher rod (11) is movably arranged in the pusher tube (12) and enables the pusher head (13) to enter the implanter (22) to push the intraocular lens, characterized in that: The artificial lens pre-installation device (20) comprises an implanter (22) and a crystal box (23); the implanter (22) is pre-installed with an artificial lens; the artificial lens is positioned and installed in the implanter (22) through a crystal fixing block (21); the implanter (22) is loaded in the crystal box (23); the push cylinder (12) can be inserted into the crystal box (23) and fixedly connected to the implanter (22) and can automatically detach the crystal fixing block (21) from the implanter (22).

2. The hydrophilic pre-installed intraocular lens injector according to claim 1, characterized in that: The implanter (22) comprises a lens cavity (221) for placing an artificial lens, the bottom of a cavity (222) in the lens cavity (221) is an arc-shaped structure, a wing cover (223) capable of opening and closing the cavity (222) is provided on the lens cavity (221), and the lens fixing block (21) is detachably mounted on the upper surface of the wing cover (223).

3. The hydrophilic pre-installed intraocular lens injector according to claim 2, characterized in that: The lens fixing block (21) is provided with two fixing columns (211) for fixing the artificial lens, and the fixing columns (211) pass through the wing cover (223) and enter the cavity (222) to cooperate with the artificial lens for fixing, wherein one of the fixing columns (211) or both of the fixing columns (211) are deformable structures.

4. The hydrophilic pre-installed intraocular lens injector according to claim 1, characterized in that: The front end of the push cylinder (12) includes an upper end face (121) and a lower end face (122) which are not connected to each other on the side. The lower end face (122) is consistent in shape with the lower surface of the crystal cavity (221) of the implanter (22) and can cover the lower surface of the crystal cavity (221). A notch (123) that runs through the front side is provided in the middle of the upper end face (121). The upper end face (121) can be inserted between the crystal fixing block (21) and the wing cover (223) and can automatically detach the crystal fixing block (21) from the implanter (22).

5. The hydrophilic pre-installed intraocular lens injector according to claim 4, characterized in that: The lower surface of the crystal fixing block (21) facing the main body (10) of the pusher and the upper end surface (121) of the front end of the push cylinder (12) are both inclined structures that can cooperate with each other to automatically separate the crystal fixing block (21) from the implanter (22).

6. The hydrophilic pre-installed intraocular lens injector according to claim 2, characterized in that: The wing cover (223) is provided with limit plates (226) on both sides and the front side of the crystal fixing block (21), and the limit plates (226) on both sides cooperate with the corresponding side surfaces of the crystal fixing block (21) to form a pushing channel. The upper end surface (121) at the front end of the pushing cylinder (12) protrudes with a symmetrically arranged guide plate (124), and the guide plate (124) can be pushed forward along the pushing channel.

7. The hydrophilic pre-installed intraocular lens injector according to claim 6, characterized in that: The upper end surface (121) at the front end of the push cylinder (12) and the upper surface of the wing cover (223), as well as the wing cover (223) and the lower part of the crystal cavity (221) can be fastened and fixed.

8. The hydrophilic pre-installed intraocular lens injector according to claim 2, characterized in that: The front end of the crystal cavity (221) is provided with a head (224) for the artificial lens to be pushed into the eye, the head (224) having a port (229), the head (224) being a flat structure, the cavity (228) in the head (224) from the crystal cavity (221) to the port (229) being a structure that changes from wide to narrow, the upper edge of the cross section of the cavity (228) being a straight structure, and the lower edge being an arc structure, the cavity (228) and the cavity (222) being smoothly connected.

9. The hydrophilic pre-installed intraocular lens injector according to claim 1, characterized in that: A push plate (111) is provided at the rear end of the push rod (11) for pushing the push rod (11) forward, and cantilevers (112) are provided on both side surfaces of the push rod (11). A one-way buckle (113) is protruded from the cantilever (112) and is engaged with the inner wall of the push tube (12) to initially position the push rod (11).

10. The hydrophilic pre-installed intraocular lens injector according to claim 19, characterized in that: The rear end of the push cylinder (12) is provided with a push cylinder snap-on socket (126) which cooperates with the one-way snap-on (113) to initially position the push rod (11); the rear end of the push cylinder (12) is provided with a hand-held arm (127) which cooperates with the push plate (111) to push the push rod (11) forward; the hand-held arm (127) is longitudinally perpendicular to the push cylinder (12) and protrudes from the upper and lower surfaces of the push cylinder (12).

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