A lens nucleus pre-chopping device suitable for micro-incision cataract phacoemulsification surgery

Abstract

A lens nucleus pre-chopping device suitable for micro-incision phacoemulsification surgery. The device's head and connecting rod can enter and exit the eye through a tiny 2mm incision. The device includes a connecting rod with a hollow tubular center and a Y-shaped dual-channel structure. The rear end of the connecting rod is provided with an elastic handle comprising an elastic sheet, one end of which is connected to the connecting rod shaft and the other end is a movable end. A wire structure is provided within the hollow tubular connecting rod, one end of which is connected to the movable end of the elastic sheet and the other end is split into two strands at the dual-channel structure to form a ring-shaped snare. The device is easy to operate and has a short learning curve. It can easily and thoroughly chop the lens nucleus, especially the hard nucleus, of a cataractous lens with minimal damage to intraocular tissue, greatly improving the efficiency and safety of the chopping process. This facilitates the smooth progress of subsequent phacoemulsification surgery.

Description

Technical Field

[0001] The invention relates to the technical field of ophthalmic medical instruments, and in particular to a lens nucleus pre-chopping device suitable for micro-incision cataract phacoemulsification surgery. Background Art

[0002] Phacoemulsification has become a standard cataract treatment procedure and is widely used clinically. With advances in surgical equipment and technology, cataract surgery can be performed with incisions down to 2 mm or less, making it more minimally invasive and allowing for faster recovery. However, micro-incision surgery increases the difficulty and risk of hard-nucleus cataract surgery (nuclear hardness grade 4 or higher). The nucleus chopper currently used in cataract surgery significantly reduces the success rate and efficiency of chopping hard nuclei. Furthermore, the procedure is difficult, requires a learning curve, and can easily damage intraocular tissue. Pre-chopping techniques are commonly used during phacoemulsification to improve chopping efficiency and reduce the use of intraoperative ultrasonic energy. However, a convenient and efficient lens pre-chopping device suitable for micro-incisions (≤2 mm) is currently unavailable. Summary of the Invention

[0003] In order to solve the technical defects of the prior art, the present invention provides a lens nucleus pre-cleaving device suitable for micro-incision cataract phacoemulsification surgery.

[0004] The technical solution adopted by the present invention is: a lens pre-cleavage device suitable for micro-incision cataract phacoemulsification surgery, including a connecting rod, the middle of the connecting rod is hollow tubular, the front end of the hollow tubular connecting rod forms a Y-shaped double-channel structure, the rear end of the connecting rod is provided with an elastic handle, the elastic handle includes an elastic sheet, one end of the elastic sheet is connected to the rod body of the connecting rod, and the other end is a movable end, a silk thread structure is provided in the hollow tubular connecting rod, one end of the silk thread structure is connected to the movable end of the elastic sheet, and the other end is divided into two strands at the double-channel structure to form an annular snare, the elastic sheet includes a cutting position where the movable end moves toward the distal end of the connecting rod to shrink the annular silk thread structure at the double-channel structure, and a snare position where the movable end is located at the proximal end of the connecting rod to extend the silk thread.

[0005] A filling portion is provided between the Y-shaped double-channel structures to prevent the wire structure from being worn by the edge of the double-channel structure, and the filling portion is flush with the edge of the double-channel structure.

[0006] An arc-shaped groove for accommodating the wire structure is provided in the middle of the filling portion and is in the same direction as the wire structure.

[0007] The silk thread structure comprises two strands of silk threads, which are tied together at one side of the elastic handle of the connecting rod to form a silk thread connected to the movable end of the elastic sheet.

[0008] The silk thread structure comprises two strands of silk threads, both of which are connected to the movable ends of the elastic sheet.

[0009] The elastic handle is also provided with a thread extension and contraction adjustment mechanism, and the thread extension and contraction adjustment mechanism is arranged at the movable end of the elastic piece.

[0010] The wire extension and contraction adjustment mechanism includes a screw and a nut. The wire structure is connected to one end of the screw, and the nut is fixedly connected to the movable end of the elastic sheet. The threaded cooperation between the screw and the nut realizes the adjustment of the extension and contraction of the annular wire structure and the size of the snare in the dual-channel structure.

[0011] The wire structure is a metal wire with rigidity and toughness.

[0012] The Y-shaped double-channel structure forms a double-channel inlet structure in the hollow tubular connecting rod, and the two strands of silk thread extend into the Y-shaped double-channel structure through the double-channel inlet structure respectively.

[0013] The elastic handle is provided with anti-slip stripes for increasing the friction of holding the hand.

[0014] The beneficial effects of the present invention are as follows: the present invention provides a lens nucleus pre-chopping device suitable for micro-incision cataract phacoemulsification surgery, the head end and connecting rod of the device can enter and exit the eye through a small 2mm incision, including a connecting rod, the middle of the connecting rod is hollow tubular, the hollow tubular connecting rod forms a Y-shaped double-channel structure, the rear end of the connecting rod is provided with an elastic handle, the elastic handle includes an elastic sheet, one end of the elastic sheet is connected to the rod body of the connecting rod, and the other end is a movable end, a wire structure is provided in the hollow tubular connecting rod, one end of the wire structure is connected to the movable end of the elastic sheet, and the other end is divided into two strands at the double-channel structure to form an annular snare, the elastic sheet includes a cutting position where the movable end moves toward the distal end of the connecting rod to contract the annular wire structure at the double-channel structure, and a snare position where the movable end is located at the proximal end of the connecting rod to extend the wire. The present invention is easy to operate and has a short learning curve. It can easily and completely chop the lens nucleus of cataract, especially the hard nucleus, with minimal damage to intraocular tissue, greatly improving the efficiency and safety of the chopping. It is conducive to the smooth progress of subsequent phacoemulsification surgery. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the spring sheet of the present invention when it is in a relaxed state.

[0016] Figure 2 It is a structural schematic diagram of the spring sheet of the present invention when it is in a pinched state.

[0017] Figure 3 This is a schematic diagram of the structure of the present invention in which two strands of silk thread are directly connected to the screw in a relaxed state.

[0018] Figure 4 This is a schematic diagram of the structure of the present invention in which two strands of silk thread are directly connected to the screw and pinched.

[0019] Among them, 1-connecting rod, 2-dual channel structure, 3-elastic handle, 4-wire structure, 5-screw, 6-nut, 7-dual channel inlet structure, 21-filling part, 22-arc groove, 31-elastic sheet. DETAILED DESCRIPTION

[0020] Now combined Figure 1 、 Figure 2 、 Figure 3 The present invention is further described as a lens nucleus pre-cleavage device suitable for micro-incision phacoemulsification surgery. The device's tip and connecting rod can enter and exit the eye through a tiny 2mm incision. The device comprises a connecting rod 1, which is hollow and tubular in the middle. The front end of the hollow tubular connecting rod 1 forms a Y-shaped dual-channel structure 2. The rear end of the connecting rod 1 is provided with an elastic handle 3, which includes an elastic sheet 31. One end of the elastic sheet 31 is connected to the shaft of the connecting rod 1, and the other end is a movable end. A wire structure 4 is provided within the hollow tubular connecting rod 1. The wire structure 4 is a rigid and tough metal wire. One end of the wire structure 4 is connected to the movable end of the elastic sheet 31, and the other end splits into two strands at the dual-channel structure 2, forming a loop-shaped snare. The elastic sheet 31 includes a cutting position where the movable end moves toward the distal end of the connecting rod 1, contracting the loop-shaped wire structure 4 at the dual-channel structure 2, and a snare position where the movable end is located at the proximal end of the connecting rod 1, extending the wire. The invention is simple to operate, does not require a long learning cycle, and causes minimal damage to surrounding eye tissues, which is beneficial to prognosis. For hard-nucleus cataracts, the nucleus can be split relatively easily, which is beneficial to the smooth progress of subsequent phacoemulsification surgery.

[0021] A filling portion 21 is provided between the Y-shaped dual-channel structure 2 to prevent the wire structure 4 from being worn by the edge of the dual-channel structure 2. The filling portion 21 is flush with the edge of the dual-channel structure 2. An arc-shaped groove 22 for accommodating the wire structure 4 is provided in the middle of the filling portion 21 in the same direction as the wire structure 4.

[0022] The wire structure 4 can be two strands of wire, which are tied together at one side of the elastic handle 3 of the connecting rod 1 to form a wire connected to the movable end of the elastic sheet 31 .

[0023] The wire structure 4 may also be two strands of wire, both of which are connected to the movable end of the elastic piece 31 .

[0024] The elastic handle 3 is also provided with a wire extension adjustment mechanism, which is arranged at the movable end of the elastic piece 31. The wire extension adjustment mechanism includes a screw 5 and a nut 6. The wire structure 4 is connected to one end of the screw 5, and the nut 6 is fixedly connected to the movable end of the elastic piece 31. The screw 5 and the nut 6 are threadedly engaged to adjust the extension and contraction of the annular wire structure 4 at the dual-channel structure 2 and the size of the snare. Adjustment is achieved by rotating the nut 6.

[0025] The Y-shaped dual-channel structure 2 forms a dual-channel inlet structure 7 in the hollow tubular connecting rod 1, and the two strands of silk thread extend into the Y-shaped dual-channel structure 2 through the dual-channel inlet structure 7 respectively to prevent the two strands of silk thread from twisting and entangled.

[0026] The elastic handle 3 is provided with anti-slip stripes for increasing the friction of holding the hand.

[0027] The method of using the present invention is as follows: After completing the cataract capsulotomy operation, fully hydrolyze the lens so that it tilts and floats out of the capsule bag opening, and partially enters the anterior chamber. Pinch the spring leaf handle of the device. At this time, the upper end of the metal wire is recovered in the funnel-shaped arc groove, which is relatively small in size and enters the eye through a 2 mm micro-incision. Then release the spring leaf to restore the upper end of the metal wire to a snare state. Adjust the position of the snare under a microscope to trap the equatorial part of the lens. Pinch the spring leaf handle again, retract the metal wire, and tighten the snare to achieve the cutting effect. For hard nuclei, the above operation can be repeated to cut them into smaller nuclear blocks. After completing the chopping of the nucleus, continue to pinch the spring leaf handle and slowly withdraw it from the eye.

[0028] In the description of the present invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or they can refer to internal connections between two components. A person of ordinary skill in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0030] Technical personnel should note: Although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention. Any modification using the inventive concept will be included in the scope of protection of this patent.

[0031] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, various improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A lens nucleus pre-cleavage device suitable for micro-incision cataract phacoemulsification surgery, comprising a connecting rod (1), characterized in that: The middle of the connecting rod (1) is hollow and tubular. The front end of the hollow and tubular connecting rod (1) is formed with a Y-shaped double-channel structure (2). The rear end of the connecting rod (1) is provided with an elastic handle (3). The elastic handle (3) includes an elastic sheet (31). One end of the elastic sheet (31) is connected to the rod body of the connecting rod (1), and the other end is a movable end. A wire structure (4) is provided in the hollow and tubular connecting rod (1). One end of the wire structure (4) is connected to the movable end of the elastic sheet (31), and the other end is divided into two strands at the double-channel structure (2) to form an annular snare. The elastic sheet (31) includes a movable end that moves toward the distal end of the connecting rod (1) so that the double-channel structure (2) is movable. The cutting position of the contraction of the annular wire structure (4) at the channel structure (2) and the position of the snare where the active end is located at the proximal end of the connecting rod (1) so that the wire is in an extended state, the elastic handle (3) is also provided with a wire extension amount adjustment mechanism, the wire extension amount adjustment mechanism is arranged at the active end of the elastic sheet (31), the wire extension amount adjustment mechanism includes a screw (5) and a nut (6), the wire structure (4) is connected to one end of the screw (5), the nut (6) is fixedly connected to the active end of the elastic sheet (31), and the screw (5) and the nut (6) are threadedly matched to realize the adjustment of the extension amount and snare size of the annular wire structure (4) at the dual channel structure (2).

2. A lens nucleus pre-cleaving device suitable for micro-incision cataract phacoemulsification surgery according to claim 1, characterized in that: A filling portion (21) is provided between the Y-shaped double-channel structures (2) to prevent the wire structure (4) from being worn by the edge of the double-channel structure (2), and the filling portion (21) is flush with the edge of the double-channel structure (2).

3. The lens nucleus pre-cleavage device suitable for micro-incision cataract phacoemulsification surgery according to claim 2, characterized in that: An arc-shaped groove (22) for receiving the wire structure (4) is provided in the middle of the filling portion (21) and is in the same direction as the wire structure (4).

4. The lens nucleus pre-cleaving device suitable for micro-incision cataract phacoemulsification surgery according to claim 1, characterized in that: The silk thread structure (4) is composed of two strands of silk threads, which are tied together at one side of the elastic handle (3) of the connecting rod (1) to form a silk thread connected to the movable end of the elastic sheet (31).

5. The lens nucleus pre-cleavage device suitable for micro-incision cataract phacoemulsification surgery according to claim 1, characterized in that: The silk thread structure (4) is composed of two strands of silk threads, both of which are connected to the movable end of the elastic sheet (31).

6. The lens nucleus pre-cleaving device suitable for micro-incision cataract phacoemulsification surgery according to claim 1, characterized in that: The wire structure (4) is a metal wire with rigidity and toughness.

7. The lens nucleus pre-cleavage device suitable for micro-incision cataract phacoemulsification surgery according to claim 1, characterized in that: The Y-shaped double-channel structure (2) is provided with a double-channel inlet structure (7) in the hollow tubular connecting rod (1), and two strands of silk thread extend into the Y-shaped double-channel structure (2) through the double-channel inlet structure (7).

8. The lens nucleus pre-cleaving device suitable for micro-incision cataract phacoemulsification surgery according to claim 1, characterized in that: The elastic handle (3) is provided with anti-slip stripes for increasing the friction of holding the handle.

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