Intraocular lens clipper for ophthalmologic operation and use method of intraocular lens clipper

Abstract

The invention belongs to the technical field of medical instruments, and discloses an intraocular lens shearing device for ophthalmologic surgery and a using method, the shearing device comprises a cylinder, one end of the cylinder is provided with a power assembly, the other end of the cylinder is provided with a shearing assembly, and the power assembly is in transmission connection with the shearing assembly through a first traction rod and a second traction rod; the shearing assembly comprises a first shearing plate and a second shearing plate, a blade is arranged on the first shearing plate, a cutter groove corresponding to the blade is formed in the second shearing plate, and an L-shaped plate is fixedly arranged at the end, close to the power assembly, of the second shearing plate; according to the intraocular lens shearing and collecting device, through mechanical structure design and transmission of multiple linkage combinations in the barrel, intraocular lenses are sheared into appropriate sizes, conveyed into the barrel at the same time and then collected through a guide-out opening, shearing, conveying and collecting of the intraocular lenses are organically integrated into a single instrument, and the working efficiency is improved. The defect that in a traditional operation, an instrument enters and exits from a cornea incision for many times is overcome, and an operator can complete complex shearing and conveying processes only through simple control of the holding plate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to an artificial lens cutter for ophthalmic surgery and a use method thereof. Background Art

[0002] In ophthalmic surgery, the precise removal and replacement of intraocular lenses is a highly technical and precise operation. Modern ophthalmic surgery includes various types of intraocular lens implantation surgeries, such as phacoemulsification combined with intraocular lens implantation (Phaco+IOL), suspended intraocular lens suturing, and phakic intraocular lens implantation (ICL) for refractive correction. These surgeries aim to improve patients' vision and eye function by implanting intraocular lenses.

[0003] However, there may be many complex medical challenges after ICL implantation. Some patients may experience serious complications, such as partial breakage of the ICL when it is folded and pushed in, dislocation of the suspended ICL, loss of transparency due to hyperplastic membrane or pigment deposition on the surface of the lens, intraocular immune inflammation caused by the material, and refractory glaucoma or intraocular inflammation after ICL surgery. These situations not only seriously affect the patient's vision, but may also threaten the health of the eye, so it is necessary to remove the original ICL precisely and minimally invasively.

[0004] A Chinese patent document (publication number: CN118453252B) discloses an intraocular foldable intraocular lens forceps, which is mainly used to remove an intraocular lens that has been previously inserted into a patient's eye; it mainly includes: a main body, having an extension end and an operating end; a restraining sleeve, connected to the extension end and communicated with the extension end; a clamping mechanism, connected to the main body, having a clamping state and an open state, and the clamping mechanism can switch between the clamping state and the open state; a driving part, rotatably arranged at the operating end of the main body and connected to the clamping mechanism, the driving part is constructed to drive the clamping mechanism to move toward or away from the restraining sleeve; the driving part has a first rotation direction and a second rotation direction, when the driving part rotates in the first rotation direction, the clamping mechanism moves toward the restraining sleeve and can be partially extended from the restraining sleeve, when the driving part rotates in the second rotation direction, the clamping mechanism moves in the direction away from the restraining sleeve.

[0005] When removing the artificial lens, an incision needs to be made at the edge of the transparent cornea, and the surgical instrument is moved in and out through the incision at the edge of the cornea to complete the removal of the artificial lens. There are several problems in the actual operation:

[0006] 1. In the above patent documents, when the intraocular lens becomes hard or large in size, it is difficult to fold the intraocular lens into the clamp and take it out at one time, and the solution has great limitations;

[0007] 2. When the intraocular lens is removed in one go by operating forceps, the hard intraocular lens can easily scratch the tissue, rub the corneal endothelium or even cause corneal endothelium exfoliation, and may also increase the size of the corneal incision, posing a huge hidden danger to subsequent rehabilitation;

[0008] 3. After the artificial lens is cut into small pieces with surgical scissors and then removed one by one with surgical forceps, the surgical instruments will pass through the corneal edge incision multiple times, resulting in frequent operations, long operation time, and increased chances of damaging human tissue, which greatly increases the safety risks of the operation. Summary of the invention

[0009] In view of the deficiencies in the prior art, the present invention provides an intraocular lens cutter for ophthalmic surgery and a method of using the same. The first traction rod and the second traction rod are controlled by a grip plate to move back and forth in a straight line. The first traction rod drives the first shear plate to open and close multiple times, so that the blade cooperates with the knife groove to shear the intraocular lens. The second traction rod drives the roller of the transmission unit to rotate continuously, so that the roller and the driven roller cooperate to transport the sheared small segment of intraocular lens toward the cylinder. The traction claw pushes the sheared intraocular lens into the interior of the cylinder, and the ratchet claw further pushes the intraocular lens to the guide outlet of the cylinder. The cutter of the present invention cuts the intraocular lens to a suitable size for easy export. The cutter enters the interior of the cornea once and can be transported to the outside through the cylinder during the shearing process, thereby avoiding the surgical instrument from being inserted into the corneal incision multiple times, thereby improving efficiency and reducing surgical risks.

[0010] In order to achieve the above object, the present invention adopts the following technical solution:

[0011] An intraocular lens clipper for ophthalmic surgery comprises a barrel for collecting intraocular lenses, a guide outlet is provided on the barrel, a power assembly is arranged at one end of the barrel, a shearing assembly is arranged at the other end of the barrel, the power assembly is connected to the shearing assembly through a first traction rod and a second traction rod; the shearing assembly comprises a first shearing plate movably arranged at the end of the barrel and a second shearing plate fixedly arranged, a blade is arranged on the first shearing plate, a knife groove is arranged on the second shearing plate corresponding to the blade, an L-shaped plate is fixedly arranged at the end of the second shearing plate close to the power assembly, the L-shaped plate is mounted on the barrel through a rotating rod, and the L-shaped plate is vertically A sliding sleeve is arranged in the direction of the first shear plate, the sliding sleeve is connected to the second traction rod through the first hinge, and a traction claw is rotatably arranged at the end of the L-shaped plate adjacent to the sliding sleeve; the second shear plate is a cavity structure, a transmission unit is arranged inside the second shear plate, the first traction rod penetrates the second shear plate and is connected to the transmission unit, the transmission unit includes a roller, the roller penetrates the top plate of the second shear plate and extends to the outside; a clamping assembly is arranged on the end of the cylinder adjacent to the first shear plate; when the power assembly drives the shearing assembly to shear, the clamping assembly is driven to cooperate with the roller to allow the sheared artificial lens to enter the cylinder.

[0012] Preferably, the transmission unit also includes a toothed plate, a first conversion gear, a second conversion gear, a first intermediate gear, a second intermediate gear, an idler gear and an output gear; the toothed plate is slidably arranged inside the second shear plate and the bottom is fixedly connected to the first traction rod, the first conversion gear and the second conversion gear are meshed with each other at intervals on the toothed plate, the first conversion gear is coaxially mounted with the first intermediate gear, the first intermediate gear meshes with the output gear, and the output gear is coaxially arranged with the roller; the second conversion gear is coaxially mounted with the second intermediate gear, the second intermediate gear meshes with the idler gear, and the idler gear meshes with the output gear; one-way bearings are both arranged on the first conversion gear and the second conversion gear, and the two one-way bearings have opposite limit positions.

[0013] Preferably, the clamping assembly includes a frame, which is mounted on a rotating rod, the top of the frame is connected to the inner top of the cylinder through a first tension spring, a driven roller is arranged at one end of the frame close to the roller, a locking rod is arranged at the other end of the frame, a pressure rod is arranged at the top of the frame, the pressure rod and the first tension spring are both located between the rotating rod and the driven roller, and a locking assembly is arranged above the locking rod.

[0014] Preferably, the locking assembly includes a T-shaped plate and a third tension spring, a T-shaped slot is provided at the inner top of the cylinder, a third tension spring is arranged inside the T-shaped slot, and the T-shaped plate is slidably installed in the T-shaped slot; an L-shaped slot is provided at the bottom of the T-shaped plate corresponding to the locking rod; a guide fillet is provided at the inner opening of the L-shaped slot to facilitate the sliding and squeezing entry of the locking rod, and a guide slot is provided at the bottom of the T-shaped plate.

[0015] Preferably, the reset assembly includes a spiral ridge wheel, a first rotating joint, a second rotating joint, a fourth tension spring, a limit plate and a dial wheel; the first rotating joint and the second rotating joint are arranged on the second traction rod at intervals, and a spiral ridge wheel and a limit plate are fixed on the second traction rod between the two rotating joints. The spiral ridge wheel is close to the guide groove, and a dial wheel is sleeved on the outside of the limit plate. A dial rod is arranged on the dial wheel, and a semi-annular groove is opened on the cylinder body around the dial rod, and a fourth tension spring is connected between one side of the dial wheel and the inner wall of the cylinder.

[0016] Preferably, the power assembly includes an end cover, a handle, a grip plate and a return spring. The end cover is detachably mounted on the cylinder. A connecting rod is fixed to the end of the first traction rod and the second traction rod close to the power assembly. A driving rod is fixed to the other side of the connecting rod. A return spring is sleeved on the driving rod. The return spring is located between the connecting rod and the bottom plate of the end cover. A handle is fixed on the end cover. A grip plate is provided on the handle via a second hinge. A limiting groove is provided on the grip plate. The driving rod slides through the bottom plate of the end cover and is sleeved inside the limiting groove.

[0017] Preferably, the end of the L-shaped plate adjacent to the sliding sleeve is connected to the traction claw through a third hinge, a limit stop is provided on one side of the third hinge close to the second shear plate, and a second tension spring is connected between the limit stop and the traction claw.

[0018] Preferably, a pawl is provided on the first traction rod, and the pawl is located between the traction pawl and the guide outlet, and the pawl pulls the intraocular lens to the guide outlet.

[0019] Preferably, the edges of the first shear plate (12), the second shear plate (13) and the cylinder (11) are all provided with rounded corners.

[0020] Preferably, the method for cutting an intraocular lens in ophthalmic surgery using the cutter comprises the following steps:

[0021] S1. Make an incision on the corneal edge, insert the head of the clipper into the cornea, and place the clipping assembly at the target position of the intraocular lens; the operator holds the handle and the grip plate, and by pinching or loosening the grip plate, the driving rod reciprocates along the axial direction of the cylinder, driving the first traction rod and the second traction rod to reciprocate linearly;

[0022] S2, the second traction rod drives the first shear plate to open and close, so that the blade built into the bottom of the first shear plate cooperates with the knife groove at the corresponding position on the second shear plate to perform multiple-frequency shearing on the intraocular lens;

[0023] S3. The first traction rod is designed through the gear combination of the transmission unit, so that the roller always keeps one-way clockwise rotation, and continuously transports the sheared artificial lens toward the inside of the cylinder; this is achieved through the one-way bearings on the first conversion gear and the second conversion gear. No matter whether the first traction rod moves from left to right or from right to left, the roller keeps rotating in the same direction;

[0024] S4. When the first shear plate and the second shear plate are opened, the L-shaped plate drives the traction claw to rotate, and the traction claw abuts against and grabs the sheared intraocular lens falling from the top of the second shear plate. When the first shear plate and the second shear plate are close to each other for the next shearing, the traction claw is driven to push the intraocular lens into the cylinder;

[0025] S5. The pawl provided on the first traction rod plays a further conveying role: when the first traction rod moves away from the second shear plate, the tip of the pawl generates a gripping force on the artificial lens, further pushing the sheared artificial lens to the outlet of the cylinder.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] 1. The present invention realizes the cutting of the intraocular lens in the eye into a suitable size through the mechanical structure design and the transmission of multiple linkage combinations inside the barrel, and at the same time transports it into the barrel, and then collects it through the guide outlet, so that the cutting, transportation and collection of the intraocular lens are organically integrated into a single instrument, avoiding the disadvantages of multiple instruments entering and exiting the corneal incision in traditional surgery, and significantly reducing surgical risks and tissue damage; secondly, the one-way bearing design of the transmission unit ensures that the roller always rotates in one direction, so as to realize the accurate and continuous transportation of the sheared intraocular lens, and through the ingenious mechanisms such as traction claws and ratchets, the intraocular lens can be transported in a narrow space. Multi-step automatic switching is achieved in a small surgical space to transport the artificial lens to the export port; furthermore, the grip plate design of the power component is simple and user-friendly, and the doctor only needs to pinch or loosen it to control the reciprocating motion of the first and second traction rods, and quickly and accurately operate the first shear plate to open and close for shearing. No additional operation is required, and the sheared artificial lens can be automatically exported; the cutter can effectively deal with artificial lenses that have become hard or large in size, which solves the technical limitation of the existing technology that it is difficult to remove hard lenses in one go, and provides a more precise and minimally invasive technical solution for complex ophthalmic surgery.

[0028] 2. The operator can complete the complex shearing and conveying process only through simple grip control, which makes the operation more user-friendly. While operating the shearing assembly to shear the artificial lens, the present invention enables the transmission unit, clamping assembly, traction claw, ratchet and locking assembly to realize automatic operation through the linkage of the mechanism, and conveys the sheared human lens, thus realizing the integrated operation of shearing, conveying and collecting the artificial lens, and can automatically complete multi-step working states in a narrow surgical space; the entire process relies on the automatic linkage of the mechanical structure, and the present invention drives the first traction rod and the second traction rod to move back and forth in a straight line through the grip plate of the power assembly, and the second traction rod drives the first shear plate to open and close shearing, so that the blade and the knife groove cooperate to shear the artificial lens; the first traction rod drives the roller of the transmission unit to rotate continuously, and the first traction rod moves back and forth During the process, the transmission unit is set so that the roller always keeps rotating in one direction, ensuring that the sheared artificial lens is continuously moved in one direction; the roller and the driven roller cooperate to transport the sheared small-sized artificial lens toward the cylinder, and the traction claw grabs the sheared artificial lens into the cylinder, and the ratchet claw set on the first traction rod further pushes the artificial lens to the guide outlet of the cylinder; the cutter of the present invention cuts the artificial lens to a suitable size for easy export, and the cutter enters the cornea once and can transport the sheared artificial lens to the outside through the cylinder during the shearing process, avoiding the surgical instrument from being inserted into the corneal incision multiple times, improving efficiency, avoiding the increase of incision or tissue collision injury, and reducing surgical risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a three-dimensional schematic diagram of the overall structure of the clipper of the present invention;

[0030] Figure 2 The shearing assembly, the clamping assembly and the locking assembly of the present invention are shown in FIG. Figure 1 ;

[0031] Figure 3 The shearing assembly, the clamping assembly and the locking assembly of the present invention are shown in FIG. Figure 2 ;

[0032] Figure 4 It is a partially cutaway perspective schematic diagram of a transmission unit of the shearer of the present invention;

[0033] Figure 5 It is a partial cross-sectional perspective schematic diagram of the power assembly of the present invention;

[0034] In the figure: cylinder 11; first shear plate 12; second shear plate 13; grip plate 14; thumbwheel 15; outlet 16; knife groove 17; blade 18; L-shaped plate 19; sleeve 20; traction claw 21; first tension spring 22; second tension spring 23; third tension spring 24; first hinge 25; first rotating joint 26; first traction rod 27; ratchet 28; second traction rod 29; spiral ridge wheel 30; T-shaped plate 31; guide groove 32; L-shaped groove -33; frame -34; pressure rod -35; rotating rod -36; driven roller -37; roller -38; locking rod -39; tooth plate -40; first conversion gear -41; second conversion gear -42; second intermediate gear -43; idler gear -44; output gear -45; first intermediate gear -46; fourth tension spring -47; limit plate -48; second rotating joint -49; driving rod -50; return spring -51; end cover -52; handle -53; second hinge -54; limit groove -55. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0036] Contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. In the description of the present invention, it should be understood that the orientation or position relationship indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or position relationship shown in the drawings, which is 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", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0037] Embodiment 1:

[0038] Figure 1-Figure 5 As shown in, an intraocular lens clipper for ophthalmic surgery comprises a barrel 11 for collecting intraocular lenses, a guide port 16 is provided on the barrel 11, a power assembly is provided at one end of the barrel 11, a shearing assembly is provided at the other end of the barrel 11, the power assembly is connected to the shearing assembly through a first traction rod 27 and a second traction rod 29; the shearing assembly comprises a first shearing plate 12 movably provided at the end of the barrel and a second shearing plate 13 fixedly provided, a blade 18 is provided on the first shearing plate 12, a knife groove 17 is provided on the second shearing plate 13 corresponding to the blade 18, an L-shaped plate 19 is fixedly provided at the end of the second shearing plate 13 close to the power assembly, the L-shaped plate 19 is mounted on the barrel 11 through a rotating rod 36, and the L-shaped plate 1 A sleeve 20 is arranged on 9 in a direction perpendicular to the first shear plate 12, the sleeve 20 is connected to the second traction rod 29 through the first hinge 25, and a traction claw 21 is rotatably arranged at the end of the L-shaped plate 19 adjacent to the sleeve 20; the second shear plate 13 is a cavity structure, a transmission unit is arranged inside the second shear plate 13, the first traction rod 27 penetrates the second shear plate 13 and connects to the transmission unit, the transmission unit includes a roller 38, the roller 38 penetrates the top plate of the second shear plate 13 and extends to the outside; a clamping assembly is arranged on the end of the cylinder 11 adjacent to the first shear plate 12; when the power assembly drives the shearing assembly to shear, the clamping assembly is driven to cooperate with the roller 38 to allow the sheared artificial lens to enter the cylinder 11.

[0039] The present invention drives the first traction rod 27 and the second traction rod 29 to move back and forth linearly through the grip plate 14 of the power assembly, and the second traction rod 29 drives the first shear plate 12 to open and close multiple times, so that the blade 18 cooperates with the knife groove 17 to shear the artificial crystal; the first traction rod 27 drives the roller 38 of the transmission unit to rotate continuously, and during the reciprocating movement of the first traction rod 27, the roller 38 is always rotated in one direction through the setting of the transmission unit, so as to ensure that the sheared artificial crystal is continuously moved in one direction; the roller 38 and the driven roller 37 cooperate to The sheared small-sized intraocular lens is transported toward the barrel 11, and the traction claw 21 grabs the sheared intraocular lens into the barrel 11. The ratchet 28 provided on the first traction rod 27 further pushes the intraocular lens to the outlet of the barrel 11; the cutter of the present invention cuts the intraocular lens to a suitable size for easy export. The cutter enters the cornea once and can transport the sheared intraocular lens to the outside through the barrel 11 during the cutting process, thereby avoiding multiple insertions of surgical instruments into the corneal incision, improving efficiency, avoiding enlargement of the incision or tissue collision injury, and reducing surgical risks.

[0040] See also Figure 2 The first traction rod 27 extends from one end of the cylinder 11 to the other end, and actually extends from one end of the power assembly to the inside of the second shear plate 13. The first traction rod 27 can be set near the inner wall of the cylinder 11; it can also be set in the side wall of the cylinder 11, in the form of penetrating the cylinder wall. The first traction rod 27 has a pawl 28, and the inner wall of the cylinder 11 is set as a through groove in the movement area of ​​the pawl 28, which is conducive to the pawl 28 contacting the artificial lens entering the inside of the cylinder, and then transporting it to the guide outlet 16 in the next step.

[0041] It is worth noting that the blade 18 is located at the bottom of the first shearing plate 12 and is spaced from the edge, and the knife groove 17 is arranged corresponding to the position of the blade 18 for easy shearing. The blade 18 is arranged inside to avoid harming human tissue and ensure safety in use.

[0042] Furthermore, the transmission unit also includes a toothed plate 40, a first conversion gear 41, a second conversion gear 42, a first intermediate gear 46, a second intermediate gear 43, an idler gear 44 and an output gear 45; the toothed plate 40 is slidably arranged inside the second shear plate 13 and the bottom is fixedly connected to the first traction rod 27, the first conversion gear 41 and the second conversion gear 42 are meshed at intervals on the toothed plate 40, the first conversion gear 41 is coaxially mounted with the first intermediate gear 46, the first intermediate gear 46 meshes with the output gear 45, and the output gear 45 is coaxially arranged with the roller 38; the second conversion gear 42 is coaxially mounted with the second intermediate gear 43, the second intermediate gear 43 meshes with the idler gear 44, and the idler gear 44 meshes with the output gear 45; the first conversion gear 41 and the second conversion gear 42 are both provided with one-way bearings, and the two one-way bearings have opposite limit positions.

[0043] See also Figure 4 A first one-way bearing is provided between the first conversion gear 41 and the rotating shaft, and a second one-way bearing is provided between the second conversion gear 42 and the rotating shaft;

[0044] When the first traction rod 27 moves from right to left (refer to Figure 4 ), the toothed plate 40 moves from right to left, driving the second conversion gear 42 to rotate clockwise, and the first conversion gear 41 idles at this time; the second intermediate gear 43 coaxially arranged with the second conversion gear 42 rotates clockwise, and the second intermediate gear 43 is meshed with the output gear 45 through the idler gear 44, so that the output gear 45 and the roller 38 coaxial therewith both rotate clockwise, and the angular velocity of the top of the roller 38 is toward the inner direction of the cylinder 11; at the same time, the output gear 45 meshes with the first intermediate gear 46, so that the first intermediate gear 46 and the rotating shaft where it is located both rotate counterclockwise, and under the action of the first one-way bearing, the first conversion gear 41 idles;

[0045] When the first traction rod 27 moves from left to right (refer to Figure 4 ), the toothed plate 40 moves from left to right, driving the first conversion gear 41 to rotate counterclockwise, and the second conversion gear 42 idles at this time; the first intermediate gear 46 coaxially arranged with the first conversion gear 41 rotates counterclockwise, and the first intermediate gear 46 meshes and transmits to the output gear 45, so that the output gear 45 and the roller 38 coaxial therewith both rotate clockwise, and the angular velocity of the top of the roller 38 is toward the inner direction of the cylinder 11; at the same time, the output gear 45 meshes with the idler gear 44 and then transmits to the second intermediate gear 43, so that the second intermediate gear 43 and the rotating shaft where it is located both rotate clockwise, and under the action of the second one-way bearing, the second conversion gear 42 idles;

[0046] By setting the transmission unit, the output gear 45 and the roller 38 coaxial therewith rotate clockwise when the first traction rod 27 moves from left to right or from right to left. Further, the roller 38 and the driven roller 37 cooperate to transport the artificial lens toward the inside of the cylinder.

[0047] Furthermore, the clamping assembly includes a frame 34, which is mounted on a rotating rod 36. The top of the frame 34 is connected to the inner top of the cylinder 11 through a first tension spring 22. A driven roller 37 is arranged at one end of the frame 34 close to the roller 38, and a locking rod 39 is arranged at the other end of the frame 34. A pressure rod 35 is arranged at the top of the frame 34. The pressure rod 35 and the first tension spring 22 are both located between the rotating rod 36 and the driven roller 37. A locking assembly is arranged above the locking rod 39.

[0048] See also Figure 2 and Figure 3Due to the action of the first tension spring 22, the end of the frame 34 close to the driven roller 37 is in an upturned state under normal conditions and does not contact the roller 38; but when the first shear plate 12 and the second shear plate 13 are close to each other for shearing, the L-shaped plate on the first shear plate 12 pushes the pressure rod 35 on the top of the frame downward, so that the driven roller 37 on the frame 34 moves downward to approach the roller 38, and the locking rod 39 on the frame 34 moves upward, and the locking rod 39 squeezes the T-shaped plate 31 and then enters the L-shaped groove 33, forming a stable state under the action of the third tension spring 24; the driven roller 37 cooperates with the roller 38 to transmit the sheared artificial lens. When it is necessary to release the clamping state of the clamping assembly, the locking rod 39 is disengaged from the T-shaped plate 31 by adjusting the reset assembly, and the driven roller 37 is away from the roller 38.

[0049] Furthermore, the locking assembly includes a T-shaped plate 31 and a third tension spring 24. A T-shaped slot is provided at the inner top of the cylinder 11, and a third tension spring 24 is arranged inside the T-shaped slot. The T-shaped plate 31 is slidably installed in the T-shaped slot; an L-shaped slot 33 is provided at the bottom of the T-shaped plate 31 corresponding to the locking rod 39; a guide fillet is provided at the inner opening of the L-shaped slot 33 to facilitate the sliding and squeezing entry of the locking rod 39, and a guide slot 32 is provided at the bottom of the T-shaped plate 31.

[0050] See also Figure 2 and Figure 3 The two wings at the top of the T-shaped plate 31 slide in the T-shaped slot, and the end of the T-shaped plate is connected to the inside of the T-shaped slot through the third tension spring 24. When the locking rod 39 presses the T-shaped plate 31 upward, the locking rod 39 enters through the guide circle of the L-shaped slot 33. After the locking rod 39 enters, the third tension spring 24 is in a stretched state, and the locking rod 39 is limited to move up and down.

[0051] Through the coordinated linkage of the second shear plate 13, the L-shaped plate 19, the frame 34 and the locking assembly, the clipper of the present invention can automatically position the artificial lens when it is initially used, which is also beneficial to the subsequent transportation work. In a small space, it can realize multi-step automatic switching of working states, saving space, simplifying manual operation and improving work efficiency.

[0052] Furthermore, the reset assembly includes a spiral ridge wheel 30, a first rotating joint 26, a second rotating joint 49, a fourth tension spring 47, a limit plate 48 and a dial wheel 15; the first rotating joint 26 and the second rotating joint 49 are arranged on the second traction rod 29 at intervals, and the spiral ridge wheel 30 and the limit plate 48 are fixed on the second traction rod 29 between the two rotating joints. The spiral ridge wheel 30 is close to the guide groove 32, and the dial wheel 15 is sleeved on the outside of the limit plate 48. A dial rod is arranged on the dial wheel 15, and a semi-annular groove is opened on the cylinder 11 around the dial rod, and the fourth tension spring 47 is connected between one side of the dial wheel 15 and the inner wall of the cylinder.

[0053] See also Figure 2 , Figure 3 and Figure 5 , the reset assembly is located between the first rotating joint 26 and the second rotating joint 49, and a section of the second traction rod 29 where the reset assembly is located can rotate around the axis and can also transmit the force in the axial direction;

[0054] Among them, a lever is provided on the dial wheel 15, and the lever is located in the semi-annular groove of the cylinder 11. The semi-annular groove limits the axial displacement of the lever and the dial wheel 15, and also provides a slideway for the lever to rotate along the circumference of the semi-annular groove. After the rotation, it is reset by the fourth tension spring 47. The dial wheel 15 is slidably sleeved on the second traction rod 29 and the limit plate 48. The dial wheel 15 and the second traction rod 29 are fixed in the circumferential direction, and can produce relative displacement in the axial direction, which is conducive to the reciprocating linear movement of the second traction rod 29;

[0055] It should be noted that a sliding fixing member may be provided between the first traction rod 27 and the second traction rod 29 and the inner wall of the cylinder 11 to facilitate the stable movement of the first traction rod 27 and the second traction rod 29;

[0056] The outer periphery of the spiral ridge wheel 30 has a spiral protrusion, which is arranged corresponding to the guide groove 32 at the bottom of the T-shaped plate 31. The spiral protrusion is a half spiral, which corresponds to the semi-circular groove. When the dial wheel 15 rotates in the semi-circular groove, the spiral protrusion of the half spiral rotates with it, driving the T-shaped plate 31 to move and disengage from the locking rod 39 to complete the reset;

[0057] When it is necessary to release the limit of the locking assembly, the dial 15 of the reset assembly is turned to rotate the second traction rod 29 between the first rotating joint 26 and the second rotating joint 49, thereby driving the spiral ridge wheel 30 to rotate. When the spiral protrusion enters the guide groove 32, the spiral protrusion drives the T-shaped plate 31 to move away from the third tension spring 24, so that the lower mouth of the L-shaped groove 33 is aligned with the locking rod 39. Under the reset action of the first tension spring 22, one end of the driven roller 37 located in the frame 34 is moved up, and one end of the locking rod 39 located in the frame 34 is moved down, so that the locking rod 39 is disengaged from the T-shaped plate 31 and the lock is released.

[0058] Furthermore, the power assembly includes an end cover 52, a handle 53, a grip plate 14 and a return spring 51. The end cover 52 is detachably mounted on the cylinder 11. A connecting rod is fixedly arranged at the end of the first traction rod 27 and the second traction rod 29 close to the power assembly. A driving rod 50 is fixedly arranged on the other side of the connecting rod. A return spring 51 is sleeved on the driving rod 50. The return spring 51 is located between the connecting rod and the bottom plate of the end cover 52. A handle 53 is fixedly arranged on the end cover 52. A grip plate 14 is arranged on the handle 53 via a second hinge 54. A limiting groove 55 is provided on the grip plate 14. The driving rod 50 slides out of the bottom plate of the end cover 52 and is sleeved inside the limiting groove 55.

[0059] See also Figure 5 When the operator holds the handle 53 and the grip plate 14 and squeezes or loosens them to switch, the driving rod 50 reciprocates along the axial direction of the cylinder 11, thereby driving the first traction rod 27 and the second traction rod 29 to reciprocate;

[0060] The first traction rod 27 can drive the toothed plate 40 in the transmission unit to move back and forth in a straight line, and through the switching of the gear set, the roller 38 can rotate in one direction to transport the artificial lens toward the direction of the cylinder. At the same time, the first traction rod 27 can also push the artificial lens into the cylinder and move toward the guide outlet 16 through the ratchet.

[0061] The second traction rod 29 can not only push the first shear plate 12 to approach and shear multiple times, but also operate the clamping assembly to move downward, so as to facilitate the smooth transportation of the intraocular lens.

[0062] Furthermore, the end of the L-shaped plate 19 adjacent to the sliding sleeve 20 is connected to the traction claw 21 through a third hinge, a limit stop is provided on one side of the third hinge close to the second shear plate 13 , and a second tension spring 23 is connected between the limit stop and the traction claw 21 .

[0063] See also Figure 2 and Figure 3 Under normal conditions, due to the action of the second tension spring 23, the traction claw 21 and the axis direction of the sliding sleeve 20 are consistent;

[0064] When the first shear plate 12 and the second shear plate 13 are opened and separated, the L-shaped plate 19 and the traction claw 21 are driven to rotate clockwise around the rotating rod 36 ( Figure 2 As shown in the figure, the traction claw 21 moves toward the direction close to the second shear plate 13. At this time, the traction claw 21 abuts against the intraocular lens falling from the top of the second shear plate 13, and the traction claw 21 is forced to rotate counterclockwise ( Figure 2 As shown), the claw tip of the traction claw 21 moves to a position close to the top of the second shear plate 13 and contacts the intraocular lens;

[0065] When the first shear plate 12 and the second shear plate 13 are close to each other, the L-shaped plate 19 and the traction claw 21 are driven to rotate counterclockwise around the rotating rod 36 ( Figure 2 As shown in the figure, the traction claw 21 moves away from the second shear plate 13. At the same time, under the action of the second tension spring 23 and the influence of the limit stop, the traction claw 21 returns to the axial direction consistent with the sliding sleeve 20, and continues to rotate counterclockwise ( Figure 2 As shown in the figure, the claw tip of the traction claw 21 pulls the intraocular lens toward the inside of the cylinder 11, thereby promoting the sheared intraocular lens to be transported into the cylinder.

[0066] The first shear plate 12 forms a linkage with the L-shaped plate 19 and the traction claw 21, which not only completes the shearing of the artificial lens, but also pulls the sheared artificial lens into the cylinder 11, realizing shearing, transportation and collection in one, avoiding the surgical instruments in traditional operations from entering and exiting the eye mask incision multiple times, which poses a safety hazard to the human eye.

[0067] Furthermore, a pawl 28 is provided on the first traction rod 27, and the pawl 28 is located between the traction pawl 21 and the guide outlet 16, and the pawl 28 pulls and transports the intraocular lens to the guide outlet.

[0068] See also Figure 2 The pawl 28 is arranged on the first traction rod 27 through a spring (not shown in the figure). During the delivery of the artificial crystal, the artificial crystal covers the first traction rod 27 and the pawl 28. When the first traction rod 27 moves toward the second shear plate 13, the claw tip of the pawl 28 is compressed and enters the first traction rod 27, and the pawl 28 and the artificial crystal only slide relative to each other; when the first traction rod 27 moves away from the second shear plate 13, the claw tip of the pawl 28 exerts a greater gripping force on the artificial crystal, and the first traction rod 27 pulls the sheared artificial crystal to the outlet 16 through the pawl 28.

[0069] Embodiment 2:

[0070] The method for cutting an intraocular lens in ophthalmic surgery using the cutter comprises the following steps:

[0071] S1. Make an incision on the corneal edge and insert the head of the clipper into the cornea; the operator holds the handle 53 and the grip plate 14, and by squeezing or loosening the grip plate 14, the driving rod 50 reciprocates along the axial direction of the barrel 11, driving the first traction rod 27 and the second traction rod 29 to reciprocate linearly; in this process, the reset spring 51 on the connecting rod provides buffering and reset functions;

[0072] S2, the second traction rod 29 drives the first shear plate 12 to open and close, so that the blade 18 built into the bottom of the first shear plate 12 cooperates with the knife groove 17 at the corresponding position on the second shear plate 13 to perform multiple-frequency shearing on the intraocular lens;

[0073] S3, the first traction rod 27 is designed with a special gear combination of the transmission unit, so that the roller 38 always keeps rotating in a single direction clockwise, and continuously transports the sheared intraocular lens toward the inside of the cylinder 11; this is achieved by the one-way bearings on the first conversion gear 41 and the second conversion gear 42. No matter whether the first traction rod 27 moves from left to right or from right to left, the roller 38 keeps rotating in the same direction;

[0074] S4. When the first shear plate 12 and the second shear plate 13 are opened, the L-shaped plate 19 drives the traction claw 21 to rotate, and the traction claw 21 abuts against and grabs the sheared artificial crystal falling from the top of the second shear plate 13. When the first shear plate 12 and the second shear plate 13 are close to each other for the next shearing, the traction claw 21 is driven to push the artificial crystal into the cylinder 11. This process is precisely controlled by the third hinge and the limit stopper to control the movement trajectory of the traction claw 21.

[0075] S5. The pawl 28 provided on the first traction rod 27 plays a further conveying role: when the first traction rod 27 moves away from the second shear plate 13, the claw tip of the pawl 28 exerts a greater gripping force on the artificial lens, further pushing the sheared artificial lens to the outlet 16 of the cylinder 11.

[0076] This method achieves integrated operations of intraocular lens cutting, transportation, and collection through sophisticated mechanical design, significantly reducing the number of times surgical instruments enter and exit the eye incision, and improving surgical safety and efficiency.

[0077] The present invention illustrates the technical concept of the present invention through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that the relevant improvements to the present invention fall within the protection scope and disclosure scope of the present invention.

Claims

1. An intraocular lens cutter for ophthalmic surgery, comprising a barrel (11) for collecting intraocular lenses, a guide outlet (16) being provided on the barrel (11), characterized in that: A power assembly is arranged at one end of the cylinder (11), and a shear assembly is arranged at the other end of the cylinder (11). The power assembly is connected to the shear assembly through a first traction rod (27) and a second traction rod (29). The shear assembly comprises a first shear plate (12) movably arranged at the end of the cylinder and a second shear plate (13) fixedly arranged. A blade (18) is arranged on the first shear plate (12), and a knife groove (17) is provided on the second shear plate (13) corresponding to the blade (18). An L-shaped plate (19) is fixedly arranged at the end of the second shear plate (13) close to the power assembly. The L-shaped plate (19) is mounted on the cylinder (11) through a rotating rod (36). The L-shaped plate (19) ) is provided with a sliding sleeve (20) in a direction perpendicular to the first shear plate (12); the sliding sleeve (20) is connected to the second traction rod (29) through a first hinge (25); a traction claw (21) is rotatably provided at the end of the L-shaped plate (19) adjacent to the sliding sleeve (20); the second shear plate (13) is a cavity structure; a transmission unit is provided inside the second shear plate (13); the first traction rod (27) penetrates the second shear plate (13) and is connected to the transmission unit; the transmission unit comprises a roller (38); the roller (38) penetrates the top plate of the second shear plate (13) and extends to the outside; a clamping assembly is provided at the end of the cylinder (11) adjacent to the first shear plate (12).

2. The intraocular lens cutter for ophthalmic surgery according to claim 1, characterized in that: The transmission unit further comprises a toothed plate (40), which is slidably arranged inside the second shear plate (13) and fixedly connected to the first traction rod (27) at the bottom thereof; a first conversion gear (41) and a second conversion gear (42) are meshed at intervals on the toothed plate (40); the first conversion gear (41) is coaxially mounted with a first intermediate gear (46), the first intermediate gear (46) meshes with an output gear (45), and the output gear (45) is coaxially arranged with the roller (38); the second conversion gear (42) is coaxially mounted with a second intermediate gear (43), the second intermediate gear (43) meshes with an idler gear (44), and the idler gear (44) meshes with the output gear (45); and one-way bearings are both arranged on the first conversion gear (41) and the second conversion gear (42), and the two one-way bearings are limited in opposite directions.

3. The intraocular lens cutter for ophthalmic surgery according to claim 2, characterized in that: The clamping assembly comprises a frame (34), the frame (34) is mounted on a rotating rod (36), the top of the frame (34) is connected to the inner top of the cylinder (11) via a first tension spring (22), a driven roller (37) is arranged at one end of the frame (34) close to the roller (38), a locking rod (39) is arranged at the other end of the frame (34), a pressure rod (35) is arranged at the top of the frame (34), the pressure rod (35) and the first tension spring (22) are both located between the rotating rod (36) and the driven roller (37), and a locking assembly is arranged above the locking rod (39).

4. The intraocular lens cutter for ophthalmic surgery according to claim 3, characterized in that: The locking assembly comprises a T-shaped plate (31) and a third tension spring (24); a T-shaped groove is provided at the inner top of the cylinder (11), a third tension spring (24) is arranged inside the T-shaped groove, and the T-shaped plate (31) is slidably installed in the T-shaped groove; an L-shaped groove (33) is provided at the bottom of the T-shaped plate (31) corresponding to the locking rod (39); a guide fillet is provided at the inner opening of the L-shaped groove (33) to facilitate the sliding and squeezing entry of the locking rod (39); a guide groove (32) is provided at the bottom of the T-shaped plate (31).

5. The intraocular lens cutter for ophthalmic surgery according to claim 4, characterized in that: A reset assembly is arranged on one side of the clamping assembly, and the reset assembly comprises a spiral ridge wheel (30), a fourth tension spring (47) and a dial wheel (15); a first rotating joint (26) and a second rotating joint (49) are arranged at intervals on the second traction rod (29); a spiral ridge wheel (30) and a limit plate (48) are fixedly arranged at intervals on the second traction rod (29) between the two rotating joints; the spiral ridge wheel (30) is close to the guide groove (32); a dial wheel (15) is sleeved on the outside of the limit plate (48); a dial rod is arranged on the dial wheel (15); a semi-annular groove is arranged on the cylinder (11) on the outer periphery of the dial rod; and a fourth tension spring (47) is connected between one side of the dial wheel (15) and the inner wall of the cylinder.

6. The intraocular lens cutter for ophthalmic surgery according to claim 1, characterized in that: The power assembly comprises an end cover (52), a handle (53), a gripping plate (14) and a return spring (51); the end cover (52) is fixedly mounted on the cylinder (11); a connecting rod is fixedly arranged at the end of the first traction rod (27) and the second traction rod (29) close to the power assembly; a driving rod (50) is fixedly arranged on the other side of the connecting rod; a return spring (51) is sleeved on the driving rod (50); and the return spring (51) is located between the connecting rod and the bottom plate of the end cover (52); a handle (53) is fixedly arranged on the end cover (52); a gripping plate (14) is arranged on the handle (53) via a second hinge (54); a limiting groove (55) is provided on the gripping plate (14); and the driving rod (50) slides through the bottom plate of the end cover (52) and then sleeved in the limiting groove (55).

7. The intraocular lens cutter for ophthalmic surgery according to claim 1, characterized in that: The end of the L-shaped plate (19) adjacent to the sliding sleeve (20) is connected to the traction claw (21) via a third hinge, a limit stop is provided on one side of the third hinge close to the second shear plate (13), and a second tension spring (23) is connected between the limit stop and the traction claw (21).

8. The intraocular lens cutter for ophthalmic surgery according to claim 1, characterized in that: The first traction rod (27) is provided with a ratchet (28), the ratchet (28) is located between the traction claw (21) and the guide outlet (16), and the ratchet (28) pulls and transports the artificial lens to the guide outlet.

9. The intraocular lens cutter for ophthalmic surgery according to claim 1, characterized in that: The edges of the first shear plate (12), the second shear plate (13) and the cylinder (11) are all provided with rounded corners.

10. A method for cutting an intraocular lens in ophthalmic surgery using the cutter according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Make an incision on the corneal edge, insert the head of the clipper into the cornea, and place the clipping assembly at the target position of the intraocular lens; the operator holds the handle (53) and the grip plate (14), and by pinching or loosening the grip plate (14), causes the driving rod (50) to reciprocate along the axial direction of the barrel, thereby driving the first traction rod (27) and the second traction rod (29) to reciprocate linearly; S2, the second traction rod (29) drives the first shear plate (12) to open and close, so that the blade (18) built into the bottom of the first shear plate (12) cooperates with the blade groove (17) at the corresponding position on the second shear plate (13), and performs multiple-frequency shearing on the artificial lens; S3, the first traction rod (27) is designed through the gear combination of the transmission unit so that the roller (38) always keeps rotating in a unidirectional clockwise direction, and continuously transports the sheared artificial lens toward the inside of the cylinder (11); this is achieved through the one-way bearings on the first conversion gear (41) and the second conversion gear (42), and no matter whether the first traction rod (27) moves from left to right or from right to left, the roller (38) keeps rotating in the same direction; S4, when the first shear plate (12) and the second shear plate (13) are opened, the L-shaped plate (19) drives the traction claw (21) to rotate, and the traction claw (21) abuts against and grabs the sheared artificial crystal falling from the top of the second shear plate (13), and when the first shear plate (12) and the second shear plate (13) are close to each other for the next shearing, the traction claw (21) is driven to push the artificial crystal into the cylinder (11); S5. The ratchet (28) disposed on the first traction rod (27) plays a further role in conveying: when the first traction rod (27) moves in a direction away from the second shear plate (13), the claw tip of the ratchet (28) exerts a gripping force on the artificial lens, further pushing the sheared artificial lens to the outlet (16) of the cylinder (11).

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