Hanging line knotting auxiliary tool and method in intraocular lens hanging operation

Abstract

The invention discloses a suspension line knotting auxiliary tool and method in intraocular lens suspension, and relates to the technical field of suspension line knotting, the suspension line knotting auxiliary tool comprises a needle head assembly, and the needle head assembly comprises a needle head tube and an auxiliary knotting tube; one end of the needle tube is a piercing end, and an annular winding and knotting groove is coaxially formed in the position, close to the piercing end, of the inner circumferential wall of the needle tube. An operation through hole is formed in the peripheral wall of the needle head tube corresponding to the winding and knotting groove; one end of the auxiliary knotting tube can be matched with the other end of the needle tube to coaxially penetrate into and extend into the winding knotting groove in a sliding manner, so that a suture line winding knotting shaping end is formed; an inner hole in one end of the auxiliary knotting tube is an intraocular lens loop penetrating hole; a threading groove is formed in the inner peripheral wall of the needle head tube in the length direction; one end of the threading groove is communicated with the winding knotting groove, and the other end of the threading groove extends to the other end of the needle head tube. The device can assist a doctor in knotting operation between a suture line and an intraocular lens loop during intraocular lens suspension, is simple to operate, and is beneficial to reducing the risk of tissue injury in eyes of a patient.

Description

Technical Field

[0001] This invention relates to the field of suspension suture knotting technology, and in particular to an auxiliary tool and method for knotting suspension sutures during intraocular lens suspension surgery. Background Technology

[0002] After an intraocular lens (IOL) is implanted in a patient's eye, it needs to be fixed in front of the main lens to prevent it from dislodging during normal daily life and activities. The current mainstream surgical procedure is as follows: During the procedure, a special tool is used to implant the IOL into the eyeball. Under the tension of its own material, the IOL automatically unfolds. The tool is used to adjust its position, aligning the two loops on the IOL with the fixed position. Surgical 10-0 sutures are then inserted into the eyeball. Using both hands, while holding the IOL loops, the other hand uses forceps to wrap the double-stranded suture clockwise twice around the head of the IOL loop. The suture is then untied and looped over the head of the IOL loop, and finally, the suture is pulled to tie a knot. The other end of the suture is then sutured to the lens capsule structure. Two to four weeks post-surgery, the capsule begins to fibrose and shrink, forming a dense "distal sleeve" that connects the suture to the capsule and the ciliary body.

[0003] In the aforementioned surgical procedure or surgical simulation training, the suture knotting step involving the intraocular lens loop requires the operator to work with both hands under a microscope, performing a series of operations such as suture pulling, wrapping, peeling, and lassoing within a very small operating space. This places extremely demanding requirements on the operator, is time-consuming, inefficient, and results in a poor patient experience. Currently, there are no tools or equipment on the market to assist the operator in performing this knotting operation or to conduct knotting simulation training.

[0004] Therefore, how to provide an auxiliary tool and method for knotting the suspension suture during intraocular lens suspension surgery, which can assist ophthalmologists in knotting the suture between the suture and the intraocular lens haptic during the procedure, eliminates the need for suture wrapping inside the patient's eye, and allows for a simple operation to complete the complex surgical process, significantly saving surgical time, and helping to reduce the risk of damage to the patient's intraocular tissues while ensuring surgical quality, is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention proposes an auxiliary tool and method for knotting suspension sutures during intraocular lens suspension surgery, aiming to solve at least one of the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention provides an auxiliary tool for knotting sutures during intraocular lens suspension surgery, comprising: a needle assembly, the needle assembly including a needle tube and an auxiliary knotting tube; one end of the needle tube is an insertion end, and the inner peripheral wall of the needle tube is coaxially provided with an annular winding knotting groove near the insertion end; the outer peripheral wall of the needle tube is provided with an operating through hole corresponding to the winding knotting groove; one end of the auxiliary knotting tube can be adapted to slide coaxially through and extend into the winding knotting groove from the other end of the needle tube to form a suture winding knotting and shaping end; the inner hole of one end of the auxiliary knotting tube is an intraocular lens loop insertion hole; The inner circumferential wall of the needle tube is provided with a threading groove along its length; both ends of the threading groove are open and one end is connected to the winding and knotting groove, and the other end extends to the other end of the needle tube.

[0008] In the intraocular lens suspension procedure of this invention, an auxiliary tool for knotting the suspension suture is used by inserting one end of the auxiliary knotting tube coaxially into the needle tube, extending the suture winding and knotting shaping end into the winding and knotting groove. One end of a surgical-grade 10-0 suture is passed through the suture groove and reaches the annular winding and knotting groove. A pre-knotting operation is performed at the operating through-hole, and the suture is wrapped and knotted on the suture winding and knotting shaping end. The suture is then radially shaped using the suture winding and knotting shaping end, and the pre-knotted and shaped suture is placed in the winding and knotting groove for later use. During the surgery, after the intraocular lens is implanted and the intraocular lens haptic has been deployed to the pre-positioned location, the ophthalmologist uses surgical forceps to hold the intraocular lens haptic with one hand. With one hand holding the eye and the other holding the suspension suture knotting aid, the needle tip pierces the surface of the eyeball and inserts the tip into the eye. Align the piercing tip with the intraocular lens haptic (IOL), and using surgical forceps, slowly grasp the IOL haptic and guide it into the inner hole of the needle tip, inserting it into the inner hole of one end of the auxiliary knotting tube to a depth of approximately 2-3 mm. Then, the suture from the auxiliary knotting tube is unwound from the knotting groove, and the suture loses its radial constraint and loops around the IOL haptic. By pulling the suture, the loop firmly holds the head of the IOL haptic. The needle tip is then slowly withdrawn from the eyeball, and the IOL haptic detaches from the needle tip, completing the knotting operation. Suspensioning with surgical scissors, the excess suture is trimmed, a suture needle is inserted, and the suture attached to the IOL haptic is sewn to the capsule tissue, completing the remaining IOL implantation procedures.

[0009] As a further improvement to the above technical solution, a telescopic drive control component is also included; the needle assembly further includes a needle seat; one end face of the needle seat is provided with a mounting hole; the other end of the needle tube is connected to the other end of the needle seat and communicates with the mounting hole; the telescopic drive control component is connected to the needle seat and corresponds to the mounting hole; the drive end of the telescopic drive control component is connected to the other end of the auxiliary knotting tube and can drive the suture winding and knotting shaping end to insert or exit the winding and knotting groove.

[0010] The beneficial effects of the above technical solution are: by controlling the extension and retraction of the auxiliary knotting tube within the needle tube through the telescopic drive control component, the operation becomes more convenient and accurate.

[0011] As a further improvement to the above technical solution, one end of the telescopic drive control component is detachably connected to the mounting hole.

[0012] The beneficial effect of the above technical solution is that the telescopic drive control component and the needle holder are designed to be detachable and separable, which makes it easy to insert the suture into the threading groove at the mounting hole after the telescopic drive control component is removed.

[0013] As a further improvement to the above technical solution, the telescopic drive control assembly includes a handheld shell, a push rod, a stop block, an elastic element, a positioning rocker arm, and a button assembly; One end of the handheld shell is connected to the mounting hole; the stop block is movably disposed in the mounting hole and fixed at the other end of the auxiliary knotting tube; the elastic element is installed in the mounting hole and one end of it is connected to the stop block, for elastically driving the suture winding and knotting shaping end to exit the winding and knotting groove. The push rod is movably disposed inside the handheld housing and one end of it is throttle-connected to the stop block; a pusher is fixed to the outer peripheral wall of the push rod; an avoidance through hole is provided on the outer peripheral wall of the handheld housing corresponding to the pusher; the end of the pusher away from the push rod moves through the avoidance through hole and extends to the outside of the handheld housing; The positioning rocker arm is hinged to the inner wall of the handheld housing, and one end of it can be engaged with the other end of the top rod when the stitching knotting end is inserted into the winding knotting groove; the button assembly is movably embedded in the handheld housing and is connected to the other end of the positioning rocker arm, and can be pressed to drive the positioning rocker arm to swing, thereby causing one end of the positioning rocker arm to disengage and release the other end of the top rod.

[0014] The beneficial effects of the above technical solution are as follows: During use, the operator holds the outer casing to operate; the pusher drives the top rod to move, and the top rod pushes the stop block to move, thereby driving the auxiliary knotting tube to extend and retract within the needle tube; when one end of the auxiliary knotting tube is in the winding knotting groove and in place, one end of the positioning rocker arm can be locked against the other end of the top rod to ensure that the position of the suture winding knotting shaping end in the winding knotting groove is stable. At this time, the elastic element is in a compressed or stretched energy storage state; by pressing the button assembly, the positioning rocker arm can be driven to swing, causing one end of the positioning rocker arm to disengage and release the other end of the top rod. Under the elastic force of the elastic element, the stop block moves and drives the auxiliary knotting tube to move, realizing that the suture winding knotting shaping end quickly exits the winding knotting groove, thereby removing the radial constraint of the pre-knotted suture loop.

[0015] As a further improvement to the above technical solution, one end of the handheld shell is detachably connected to the mounting hole; one end of the push rod abuts against the end of the stop block away from the needle tube.

[0016] The beneficial effects of the above technical solution are: the handheld shell can be separated from the mounting hole, the top rod and the stop can be separated, and after the handheld shell is removed, it is convenient to insert the sewing thread into the threading groove at the mounting hole.

[0017] As a further improvement to the above technical solution, the button assembly includes a button and a second elastic element; the outer peripheral wall of the handheld housing is provided with a mounting through hole corresponding to the other end of the positioning rocker arm; one end of the button is movably disposed in the mounting through hole and abuts against the outer peripheral side of the other end of the positioning rocker arm; the second elastic element is installed inside the handheld housing and corresponds to the side of the other end of the positioning rocker arm away from the button; one end of the second elastic element elastically presses against the outer peripheral side of the other end of the positioning rocker arm.

[0018] The beneficial effects of the above technical solution are as follows: the function of the elastic element 2 is to push against the other end of the positioning rocker arm so that it has a swing tendency, so that when the other end of the push rod moves to the corresponding end of the positioning rocker arm, it can be locked against the end of the positioning rocker arm to achieve positioning; the operator can press the button to compress the elastic element 2 and drive the positioning rocker arm to swing, thereby enabling the one end of the positioning rocker arm to be separated from the other end of the push rod, thus realizing the convenient operation of releasing the push rod and the auxiliary knotting tube.

[0019] As a further improvement to the above technical solution, it also includes a pull spool, which is rotatably disposed inside the handheld housing; one end of the pull spool extends to the outside of the handheld housing and forms a winding and twisting operation end; the handheld housing has a wire passage channel, one end of which is connected to the mounting hole and the other end corresponds to the pull spool.

[0020] The beneficial effects of the above technical solution are: when in use, the suture is wound around the pull thread spool, one end of the suture is led out and can pass through the thread channel, the mounting hole and the thread groove in sequence to reach the winding knot groove.

[0021] As a further improvement to the above technical solution, the wire passage is arranged along the length of the handheld shell and located on one side of the top rod, and the stop block is provided with a wire passage hole corresponding to the wire passage.

[0022] The beneficial effect of the above technical solution is that by setting a through hole on the stop block, the suture threading path can be avoided, which facilitates smooth threading operation.

[0023] As a further improvement to the above technical solution, the elastic element is a spring and is sleeved on the other end of the auxiliary knotting tube; one end of the elastic element abuts against the bottom wall of the mounting hole, and the other end abuts against the side of the stop block near the auxiliary knotting tube; the other end of the needle tube and the through hole both correspond to the inner hole of the elastic element.

[0024] The beneficial effects of the above technical solution are: it makes the other end of the needle tube and the through hole correspond to the inner hole of the elastic element, thereby avoiding the suture threading path and facilitating smooth threading operation.

[0025] Another aspect of the present invention provides a method for simulating suture knotting during intraocular lens suspension surgery, using the aforementioned suture knotting auxiliary tool, comprising the following steps: Step 1: Move the auxiliary knotting tube that passes through the inner hole of the needle tube so that one end of the auxiliary knotting tube is located in the winding knotting groove; Step 2: Install the suture. Pass one end of the suture through the threading groove and into the winding and knotting groove. Perform the operation at the through hole by wrapping one end of the suture around and knotting it around the outer circumference of one end of the auxiliary knotting tube to form a suture loop. Step 3: Align the needle tip with the intraocular lens haptic, and use a tool to insert the head of the intraocular lens haptic through the inner hole of the needle tip into the intraocular lens haptic insertion hole; Step 4: Remove one end of the auxiliary knotting tube from the winding knotting groove, and then place the suture loop on the head of the intraocular lens loop; pull the other end of the suture to tighten the suture loop on the head of the intraocular lens loop.

[0026] As can be seen from the above technical solution, compared with the prior art, the present invention discloses an auxiliary tool and method for knotting suspension sutures in intraocular lens suspension surgery, which has the following advantages and beneficial effects.

[0027] Using the suspension suture knotting aid of this invention, there is no need to perform suture wrapping inside the patient's eye, nor is it necessary to manually wrap the suture onto the intraocular lens haptic using traditional general surgical tools under a high-powered microscope. This complex surgical procedure can be completed with a simple operation, reducing the difficulty of the operation and making it easier for novice doctors to master. It can ensure the quality of the surgery and avoid damage to the patient's eye during the process of constantly turning the instrument inside the eye to tie the suture knot, thus reducing the risk of intraocular damage to the patient. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0029] Figure 1 This invention provides a schematic diagram of the needle assembly structure of an auxiliary tool for tying knots in intraocular lens suspension surgery.

[0030] Figure 2 A cross-sectional view of the needle assembly of an auxiliary tool for tying suspension sutures in intraocular lens suspension surgery according to the present invention.

[0031] Figure 3 The present invention provides a side view of the overall structure of an auxiliary tool for tying suspension wires in intraocular lens suspension surgery.

[0032] Figure 4 A cross-sectional view along the radial direction of the traction wire axis of an auxiliary tool for tying knots in intraocular lens suspension surgery according to the present invention.

[0033] Figure 5 The present invention provides a top view of the overall structure of an auxiliary tool for tying suspension wires during intraocular lens suspension surgery.

[0034] Figure 6 A cross-sectional view along the axial direction of the traction line of an auxiliary tool for tying knots in intraocular lens suspension surgery according to the present invention.

[0035] Figure 7 This invention provides a schematic diagram of the internal structure of an intraocular lens suspension procedure, showing the insertion of a suspension suture knotting auxiliary tool into the ocular prosthesis and the insertion of the head of the intraocular lens haptic into the needle assembly through the intraocular lens haptic's insertion hole.

[0036] Figure 8 A schematic diagram of the structure of a suture loop formed by wrapping and pre-tying one end of the suture and placing it on the suture wrapping and knotting shaping end of a suspension suture knotting auxiliary tool in an intraocular lens suspension procedure according to the present invention.

[0037] Figure 9 This invention provides a schematic diagram of the structure of an intraocular lens suspension procedure where, after the suspension suture knotting auxiliary tool is removed from the eye implant, the suture loop is tightened at the head of the intraocular lens haptic implant.

[0038] Figure 10 This invention relates to a structural schematic diagram of a suture loop formed by wrapping and knotting a double-stranded suture at the shaping end of a suture knotting auxiliary tool for intraocular lens suspension surgery.

[0039] In the diagram: 1. Needle assembly; 11. Needle tube; 111. Threading and knotting groove; 112. Operating through hole; 113. Threading groove; 12. Auxiliary knotting tube; 121. Suture winding, knotting, and shaping end; 122. Intraocular lens loop insertion hole; 13. Needle holder; 131. Mounting hole; 2. Telescopic drive control assembly; 21. Handheld housing; 211. Clearance through hole; 212. Mounting through hole; 213. Thread passage; 22. Top rod; 221 1. Pushing body; 23. Stop block; 231. Through hole for thread; 24. Elastic element one; 25. Positioning rocker arm; 251. Wedge-shaped positioning block; 26. Button assembly; 261. Button; 262. Elastic element two; 3. Pulling spool; 31. Thread winding and twisting operation end; 4. Suture thread; 41. Suture thread loop; 5. Eyeball prosthesis; 51. Lens region; 6. Artificial lens prosthesis; 61. Artificial lens haptic prosthesis; 611. Artificial lens haptic prosthesis head. Detailed Implementation

[0040] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0041] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0042] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0044] According to embodiments of the present invention, such as Figures 1 to 10 As shown, an auxiliary tool for tying the suspension suture in intraocular lens suspension surgery includes: a needle assembly 1.

[0045] The needle assembly 1 includes a needle tube 11 and an auxiliary knotting tube 12. One end of the needle tube 11 is the insertion end, and the inner peripheral wall of the needle tube 11 is coaxially provided with an annular winding knotting groove 111 near the insertion end. The outer peripheral wall of the needle tube 11 is provided with an operation through hole 112 corresponding to the winding knotting groove 111. One end of the auxiliary knotting tube 12 can be adapted to slide coaxially through the other end of the needle tube 11 and extend into the winding knotting groove 111 to form a suture winding knotting and shaping end 121. The inner hole of one end of the auxiliary knotting tube 12 is an artificial lens loop insertion hole 122.

[0046] The inner peripheral wall of the needle tube 11 is provided with a threading groove 113 along its length; both ends of the threading groove 113 are open and one end is connected to the winding and knotting groove 111, and the other end extends to the other end of the needle tube 11.

[0047] In this embodiment, during intraocular lens suspension surgery, the auxiliary tool for tying the suspension suture is used by inserting one end of the auxiliary knotting tube 12 coaxially into the needle tube 11, and extending the suture winding and knotting shaping end 121 to the winding knotting groove 111. One end of the surgical-grade 10-0 suture is passed through the threading groove 113 and reaches the annular winding knotting groove 111. A pre-knotting operation is performed at the operating through-hole 112, and the suture is wrapped and knotted on the suture winding and knotting shaping end 121. The suture is radially shaped using the suture winding and knotting shaping end 121, and the pre-knotted suture is placed in the winding knotting groove 111 for later use. During surgery, after the intraocular lens is implanted and the intraocular lens haptic prosthesis 61 is deployed in the pre-positioned position, the ophthalmologist uses surgical forceps to hold the head 611 of the intraocular lens haptic prosthesis with one hand, and holds the suspension suture knotting tool with the other hand. Using an auxiliary tool, the needle tube 11 is used to pierce the surface of the eyeball or the eye prosthesis and insert the front part of the needle tube 11 into the eyeball or the eye prosthesis. The piercing end is aligned with the artificial lens haptic implant 61. Using a general surgical forceps, the artificial lens haptic implant 61 is slowly grasped and inserted into the inner hole of the needle tube 11 and into the artificial lens haptic insertion hole 122. The insertion depth is about 2-3 mm to meet the required insertion depth. Then, the suture of the auxiliary knotting tube 12 is wound around the knotting and shaping end 121 and withdrawn from the knotting groove 111. At this time, the shaped suture loses its radial constraint and loops around the artificial lens haptic implant 61. By pulling the suture, the suture loop 41 can firmly hold the head 611 of the artificial lens haptic implant. The needle tube 11 is slowly withdrawn from the eyeball or the eye prosthesis, and the artificial lens haptic implant 61 is detached from the needle tube 11, thus completing the knotting operation. Leave a sufficiently long suture, use surgical scissors to cut off the excess suture, insert a suture needle, and suture the suture connected to the intraocular lens haptic 61 to the capsule tissue to complete the remaining procedures of the intraocular lens implantation.

[0048] Specifically, the size and shape of the operating through hole 112 are set according to the needs of the knotting operation, so as to facilitate the insertion of tools such as tweezers for winding operations and improve the convenience of winding and knotting. For example, multiple operating through holes 112 can be set, and multiple operating through holes 112 are arranged at intervals along the axial and / or circumferential direction of the needle tube 11. The operating through hole 112 can be a rectangular hole, a strip hole, or a round hole, etc.

[0049] Specifically, the axial cross-section of the suture knotting groove 111 is rectangular, and the fitting gap between the outer wall of the auxiliary knotting tube 12 and the inner wall of the needle tube 11 is smaller than the diameter of the suture. The inner diameter of the auxiliary knotting tube 12 is designed to match the diameter of the artificial lens haptic head 611. During the process of the auxiliary knotting tube 12 exiting the suture knotting groove 111, the suture loop 41 can remain in the suture knotting groove 111 and be correspondingly fitted to the artificial lens haptic head 611. When the other end of the suture is pulled, the suture loop 41 will not detach from the artificial lens haptic head 611, but will be tightened on the artificial lens haptic head 611.

[0050] In some embodiments, the device further includes a telescopic drive control component 2; the needle assembly 1 also includes a needle seat 13; one end face of the needle seat 13 is provided with a mounting hole 131; the other end of the needle tube 11 is connected to the other end of the needle seat 13 and communicates with the mounting hole 131; the telescopic drive control component 2 is connected to the needle seat 13 and corresponds to the mounting hole 131; the drive end of the telescopic drive control component 2 is connected to the other end of the auxiliary knotting tube 12 and can drive the suture winding knotting shaping end 121 to insert or withdraw from the winding knotting groove 111.

[0051] The telescopic drive control component 2 controls the auxiliary knotting tube 12 to telescopically move within the inner hole of the needle tube 11, making the operation more convenient and accurate.

[0052] In some embodiments, one end of the telescopic drive control component 2 is detachably connected to the mounting hole 131.

[0053] The telescopic drive control assembly 2 and the needle holder 13 are designed to be detachable, which makes it easy to insert the suture 4 into the threading groove 113 through the mounting hole 131 after the telescopic drive control assembly 2 is removed.

[0054] Specifically, mounting hole 131 is a stepped circular hole; the other end of needle tube 11 is coaxially fixed to the other end of needle seat 13, and needle tube 11 is coaxially connected to mounting hole 131; the diameter of mounting hole 131 near the end of needle tube 11 is smaller than the diameter of mounting hole 131 away from needle tube 11. One end of telescopic drive control assembly 2 is detachably and coaxially fitted into the hole at the end of mounting hole 131 away from needle tube 11. To achieve a reliable connection between one end of telescopic drive control assembly 2 and one end of needle seat 13, they can be locked together by radial screws to prevent them from coming apart during use.

[0055] In some embodiments, the telescopic drive control assembly 2 includes a handheld housing 21, a push rod 22, a stop 23, an elastic element 24, a positioning rocker arm 25, and a button assembly 26.

[0056] One end of the handheld shell 21 is connected to the mounting hole 131; the stop block 23 is movably disposed in the mounting hole 131 and fixed to the other end of the auxiliary knotting tube 12; the elastic element 24 is installed in the mounting hole 131 and one end is connected to the stop block 23, and is used to elastically drive the suture winding knotting shaping end 121 to exit the winding knotting groove 111.

[0057] The push rod 22 is movably disposed inside the handheld housing 21 and one end of it is connected to the stop block 23; a pusher 221 is fixed on the outer peripheral wall of the push rod 22; an avoidance through hole 211 is provided on the outer peripheral wall of the handheld housing 21 corresponding to the pusher 221; the end of the pusher 221 away from the push rod 22 moves through the avoidance through hole 211 and extends to the outside of the handheld housing 21.

[0058] The positioning rocker arm 25 is hinged to the inner wall of the handheld housing 21 in the middle, and one end of it can be locked against the other end of the top rod 22 when the stitching knot shaping end 121 is inserted into the winding knot groove 111; the button assembly 26 is movably embedded in the handheld housing 21 and is connected to the other end of the positioning rocker arm 25 through transmission, and can be pressed to drive the positioning rocker arm 25 to swing, thereby causing one end of the positioning rocker arm 25 to disengage and release the other end of the top rod 22.

[0059] In use, the operator holds the outer casing 21 to operate it; the pusher 221 drives the push rod 22 to move, and the push rod 22 pushes the stop block 23 to move, thereby driving the auxiliary knotting tube 12 to extend and retract within the needle tube 11; when one end of the auxiliary knotting tube 12 is in the winding knotting groove 111 and in place, one end of the positioning rocker arm 25 can be locked against the other end of the push rod 22 to ensure that the position of the suture winding knotting shaping end 121 in the winding knotting groove 111 is stable. At this time, the elastic element 24 is in a compressed or stretched energy storage state; by pressing the button assembly 26, the positioning rocker arm 25 can be driven to swing, so that one end of the positioning rocker arm 25 is disengaged and the other end of the push rod 22 is released. Under the elastic force of the elastic element 24, the stop block 23 moves and drives the auxiliary knotting tube 12 to move, so that the suture winding knotting shaping end 121 can quickly exit the winding knotting groove 111, thereby removing the radial constraint of the pre-knotted suture loop 41.

[0060] In some embodiments, one end of the handheld housing 21 is detachably connected to the mounting hole 131; one end of the push rod 22 presses against the end of the stop block 23 away from the needle tube 11.

[0061] The handheld housing 21 can be separated from the mounting hole 131, and the top rod 22 can be separated from the stop block 23. After removing the handheld housing 21, it is easy to insert the sewing thread into the threading groove 113 at the mounting hole 131.

[0062] In some embodiments, the button assembly 26 includes a button 261 and an elastic element 262; the outer peripheral wall of the handheld housing 21 is provided with a mounting through hole 212 at the other end of the positioning rocker arm 25; one end of the button 261 is movably disposed in the mounting through hole 212 and abuts against the outer peripheral side of the other end of the positioning rocker arm 25; the elastic element 262 is installed inside the handheld housing 21 and corresponds to the side of the other end of the positioning rocker arm 25 away from the button 261; one end of the elastic element 262 elastically presses against the outer peripheral side of the other end of the positioning rocker arm 25.

[0063] The function of the elastic element 262 is to push against the other end of the positioning rocker arm 25 so that it has a swing tendency, so that when the other end of the push rod 22 moves to the corresponding end of the positioning rocker arm 25, it can be locked against the end of the positioning rocker arm 25 to achieve positioning; the operator can press the button 261 to compress the elastic element 262 and drive the positioning rocker arm 25 to swing, thereby enabling one end of the positioning rocker arm 25 to disengage from the other end of the push rod 22, thus realizing the convenient operation of releasing the push rod 22 and the auxiliary knotting tube 12.

[0064] Specifically, the handheld casing 21 is composed of two interlocking half-shells fixed together by bolts.

[0065] Specifically, the handheld housing 21 has an opening on one side wall, which is sealed by a cover plate. The cover plate is detachably and securely fastened to the side wall of the handheld housing 21 with screws. The positioning rocker arm 25 is installed inside the handheld housing 21 through the opening. The mounting through hole 212 is vertically set on the cover plate and corresponds to the other end of the positioning rocker arm 25. The button 261 can slide axially along the mounting through hole 212, and its bottom end presses against the outer periphery of the other end of the positioning rocker arm 25. After removing the cover plate, the button assembly 26 and the positioning rocker arm 25 can be repaired or replaced.

[0066] Specifically, a guide channel is provided inside the handheld casing 21 along its length, and the push rod 22 is slidably connected in the guide channel. A wedge-shaped positioning block 251 is fixed to the outer peripheral wall of one end of the positioning rocker arm 25; the wedge-shaped positioning block 251 can slide against the outer peripheral wall of the push rod 22, and when the push rod 22 disengages from the wedge-shaped positioning block 251, the wedge-shaped positioning block 251 is engaged at the end of the push rod 22 away from the stop block 23. Pressing the button 261 can cause the positioning rocker arm 25 to swing, thereby driving the wedge-shaped positioning block 251 away from the push rod 22, realizing the release of the push rod 22. Under the elastic force of the elastic element 24, the end of the push rod 22 away from the stop block 23 hits the bottom in the guide channel and stops.

[0067] In some embodiments, a pull wire spool 3 is also included, which is rotatably disposed inside the handheld housing 21; one end of the pull wire spool 3 extends to the outside of the handheld housing 21 and forms a winding and twisting operation end 31; the handheld housing 21 has a wire passage 213, one end of which is connected to the mounting hole 131, and the other end corresponds to the pull wire spool 3.

[0068] In use, the suture 4 is wound around the pull spool 3. One end of the suture 4 is led out and passes through the thread channel 213, the mounting hole 131, and the thread groove 113 before reaching the winding and knotting groove 111. When the operator holds the handheld casing 21, they can rotate the winding and twisting end 31 with their fingers to pull the suture. After the artificial lens haptic implant 61 is knotted, one end of the suture 4 is tightened on the artificial lens haptic implant 61. At this time, the winding and twisting end 31 is released, and the suspension suture knotting auxiliary tool is slowly withdrawn. During this process, the suture 4 can drive the pull spool 3 to rotate in the opposite direction to unwind itself.

[0069] Specifically, the pull-line spool 3 is located on the side of the button assembly 26 away from the top rod 22. The winding and twisting operation end 31 corresponds one-to-one with the button 261 and is arranged on the adjacent side walls of the handheld housing 21, so that when the operator holds the handheld housing 21 with one hand, they can easily press the control button 261 with their thumb and twist the winding and twisting operation end 31 with their thumb and forefinger, which improves the convenience of operation and the stability of holding the handheld housing 21.

[0070] In some embodiments, the wire passage 213 is arranged along the length of the handheld housing 21 and located on one side of the top rod 22, and the stop block 23 is provided with a wire passage hole 231 corresponding to the wire passage 213.

[0071] By setting a thread-passing hole 231 on the stop block 23, the thread-passing path of the suture can be avoided, which facilitates the smooth thread-passing operation.

[0072] In some embodiments, the elastic element 24 is a spring and is sleeved on the other end of the auxiliary knotting tube 12; one end of the elastic element 24 abuts against the bottom wall of the mounting hole 131, and the other end abuts against the side of the stop block 23 near the auxiliary knotting tube 12; the other end of the needle tube 11 and the through hole 231 both correspond to the inner hole of the elastic element 24.

[0073] The other end of the needle tube 11 and the thread through hole 231 are aligned with the inner hole of the elastic element 24, which avoids the suture threading path and facilitates smooth threading operation.

[0074] Specifically, the stop 23 is a cylindrical stop, and the stop 23 is adapted to be slidably connected to the hole of the mounting hole 131 at the end away from the needle tube 11; the elastic element 24 is coaxially adapted to be installed in the hole of the mounting hole 131 at the end close to the needle tube 11.

[0075] According to another embodiment of the present invention, a method for tying suspension sutures during intraocular lens (IOL) suspension surgery is specifically a simulation training method for tying suspension sutures during IOL suspension surgery; using an auxiliary tool for tying suspension sutures during IOL suspension surgery, the method includes the following steps: Step 1: Move the auxiliary knotting tube 12 that passes through the inner hole of the needle tube 11 so that one end of the auxiliary knotting tube 12 is located in the winding knotting groove 111; Step 2: Install suture 4, pass one end of suture 4 through the threading groove 113 and into the winding and knotting groove 111; perform the operation at the operating through hole 112, wrap one end of suture 4 around and knot it on the outer periphery of one end of the auxiliary knotting tube 12 to form a suture loop 41. Step 3: Insert the needle tube 11 into the eyeball prosthesis 5 and align it with the artificial lens haptic prosthesis 61. Use a tool to insert the artificial lens haptic prosthesis head 611 into the artificial lens haptic insertion hole 122 through the inner hole of the needle tube 11. Step 4: Withdraw one end of the auxiliary knotting tube 12 from the winding knotting groove 111, and then place the suture loop 41 on the head 611 of the artificial lens haptic prosthesis; pull the other end of the suture 4 to tighten the suture loop 41 on the head 611 of the artificial lens haptic prosthesis, and slowly withdraw the insertion end of the needle tube 11 from the eyeball prosthesis 5.

[0076] Specifically, the eye prosthesis 5 used for knot-tying simulation training has an artificial lens prosthesis 6 pre-implanted inside, and the artificial lens prosthesis 6 has an artificial lens loop prosthesis 61.

[0077] Specifically, the process of installing the suture is as follows: one end of the suture wrapped on the pull thread spool 3 is led out from the thread passage 213 and passes through the thread through hole 231, the inner hole of the elastic element 24, and the thread groove 113 in sequence to reach the winding and knotting groove 111. At the operation through hole 112, one end of the suture is wrapped and knotted around the outer periphery of one end of the auxiliary knotting tube 12 to form a suture loop 41.

[0078] Specifically, 10-0 medical double-strand sutures can be used; the method of wrapping and knotting one end of the suture around the outer periphery of one end of the auxiliary knotting tube 12 can refer to the conventional method used by ophthalmologists to wrap and knot one end of the double-strand suture around the head 611 of the intraocular lens haptic prosthesis.

[0079] Specifically, the knotting method of the double-strand suture around one end of the auxiliary knotting tube 12 can be as follows: wrap one end of the double-strand suture around the outer periphery of one end of the auxiliary knotting tube 12 and tie a cross knot; then open one end of the double-strand suture into a single-strand loop and place it around the outer periphery of one end of the auxiliary knotting tube 12, forming a suture loop 41 (i.e., a pullable cord structure); in use, after one end of the auxiliary knotting tube 12 exits the winding knotting groove 111, the suture loop 41 can be tightened by pulling the other end of the double-strand suture. It should be noted that the suture can be selected as needed; the suture can be a single-strand suture or a double-strand suture; the method of wrapping and knotting one end of the suture around one end of the auxiliary knotting tube 12 can also be implemented with reference to existing technology, and will not be elaborated here.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0081] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tool for knotting suspension sutures during intraocular lens suspension surgery, characterized in that, include: A needle assembly (1) includes a needle tube (11) and an auxiliary knotting tube (12). One end of the needle tube (11) is an insertion end, and an annular winding knotting groove (111) is coaxially provided on the inner peripheral wall of the needle tube (11) near the insertion end. An operation through hole (112) is provided on the outer peripheral wall of the needle tube (11) corresponding to the winding knotting groove (111). One end of the auxiliary knotting tube (12) can be adapted to slide coaxially through the other end of the needle tube (11) and extend into the winding knotting groove (111) to form a suture winding knotting and shaping end (121). The inner hole of one end of the auxiliary knotting tube (12) is an artificial lens loop insertion hole (122). The inner circumferential wall of the needle tube (11) is provided with a threading groove (113) along its length; both ends of the threading groove (113) are open and one end is connected to the winding and knotting groove (111), and the other end extends to the other end of the needle tube (11).

2. The auxiliary tool for tying suspension sutures during intraocular lens suspension surgery according to claim 1, characterized in that, It also includes a telescopic drive control component (2); the needle assembly (1) also includes a needle seat (13); one end face of the needle seat (13) is provided with a mounting hole (131); the other end of the needle tube (11) is connected to the other end of the needle seat (13) and communicates with the mounting hole (131); the telescopic drive control component (2) is connected to the needle seat (13) and corresponds to the mounting hole (131); the drive end of the telescopic drive control component (2) is connected to the other end of the auxiliary knotting tube (12) and can drive the suture winding knotting shaping end (121) to insert or exit the winding knotting groove (111).

3. The auxiliary tool for tying suspension sutures during intraocular lens suspension surgery according to claim 2, characterized in that, One end of the telescopic drive control component (2) is detachably connected to the mounting hole (131).

4. The auxiliary tool for tying suspension sutures during intraocular lens suspension surgery according to claim 2, characterized in that, The telescopic drive control assembly (2) includes a handheld shell (21), a top rod (22), a stop (23), an elastic element (24), a positioning rocker arm (25), and a button assembly (26). One end of the handheld shell (21) is connected to the mounting hole (131); the stop block (23) is movably disposed in the mounting hole (131) and fixed at the other end of the auxiliary knotting tube (12); the elastic element (24) is installed in the mounting hole (131) and one end of it is connected to the stop block (23), for elastically driving the suture winding and knotting shaping end (121) to exit the winding and knotting groove (111); The push rod (22) is movably disposed inside the handheld housing (21) and one end of it is connected to the stop block (23); a pusher (221) is fixed on the outer peripheral wall of the push rod (22); an avoidance through hole (211) is provided on the outer peripheral wall of the handheld housing (21) corresponding to the pusher (221); one end of the pusher (221) away from the push rod (22) moves through the avoidance through hole (211) and extends to the outside of the handheld housing (21); The positioning rocker arm (25) is hinged in the middle to the inner wall of the handheld shell (21), and one end of it can be engaged with the other end of the top rod (22) when the stitching knot shaping end (121) is inserted into the winding knot groove (111); the button assembly (26) is movably embedded in the handheld shell (21) and is connected to the other end of the positioning rocker arm (25), and can press to drive the positioning rocker arm (25) to swing, thereby causing one end of the positioning rocker arm (25) to disengage and release the other end of the top rod (22).

5. The auxiliary tool for tying suspension sutures during intraocular lens suspension surgery according to claim 4, characterized in that, One end of the handheld housing (21) is detachably connected to the mounting hole (131); one end of the push rod (22) presses against the end of the stop block (23) away from the needle tube (11).

6. The auxiliary tool for tying suspension sutures during intraocular lens suspension surgery according to claim 4, characterized in that, The button assembly (26) includes a button (261) and an elastic element (262); the outer peripheral wall of the handheld housing (21) is provided with a mounting through hole (212) corresponding to the other end of the positioning rocker arm (25); one end of the button (261) is movably disposed in the mounting through hole (212) and abuts against the outer peripheral side of the other end of the positioning rocker arm (25); the elastic element (262) is installed inside the handheld housing (21) and corresponds to the side of the other end of the positioning rocker arm (25) away from the button (261); one end of the elastic element (262) elastically presses against the outer peripheral side of the other end of the positioning rocker arm (25).

7. The auxiliary tool for tying suspension sutures in intraocular lens suspension surgery according to claim 6, characterized in that, It also includes a pull wire spool (3), which is rotatably disposed inside the handheld housing (21); one end of the pull wire spool (3) extends to the outside of the handheld housing (21) and forms a winding and twisting operation end (31); the handheld housing (21) has a wire passage (213), one end of which is connected to the mounting hole (131), and the other end corresponds to the pull wire spool (3).

8. The auxiliary tool for tying suspension sutures in intraocular lens suspension surgery according to claim 7, characterized in that, The wire passage (213) is arranged along the length of the handheld shell (21) and located on one side of the top rod (22). The stop block (23) is provided with a wire passage hole (231) corresponding to the wire passage (213).

9. The auxiliary tool for tying suspension sutures during intraocular lens suspension surgery according to claim 8, characterized in that, The elastic element (24) is a spring and is sleeved on the other end of the auxiliary knotting tube (12); one end of the elastic element (24) abuts against the bottom wall of the mounting hole (131), and the other end abuts against the side of the stop block (23) near the auxiliary knotting tube (12); the other end of the needle tube (11) and the through hole (231) both correspond to the inner hole of the elastic element (24).

10. A method for simulating the knotting of suspension threads during intraocular lens suspension surgery, characterized in that, Using the intraocular lens suspension surgery suture knotting auxiliary tool according to any one of claims 1-9 includes the following steps: Step 1: Move the auxiliary knotting tube (12) that passes through the inner hole of the needle tube (11) so that one end of the auxiliary knotting tube (12) is located in the winding knotting groove (111); Step 2: Install the suture thread. Pass one end of the suture thread through the threading groove (113) and into the winding and knotting groove (111). Perform the operation at the operating through hole (112) by wrapping and knotting one end of the suture thread around the outer periphery of one end of the auxiliary knotting tube (12) to form a suture thread loop. Step 3: Insert the needle tube (11) into the eyeball prosthesis and align it with the artificial lens haptic prosthesis. Use a tool to insert the head of the artificial lens haptic prosthesis into the artificial lens haptic insertion hole (122) through the inner hole of the needle tube (11). Step 4: Remove one end of the auxiliary knotting tube (12) from the winding knotting groove (111), and then place the suture loop on the head of the artificial lens haptic prosthesis; pull the other end of the suture to tighten the suture loop on the head of the artificial lens haptic prosthesis; slowly remove the insertion end of the needle tube (11) from the eyeball prosthesis.

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