An intraocular lens suspension device

Abstract

The application belongs to the technical field of medical devices, solves the technical problems of long operation time, complex operation with suture, easy suture falling and artificial lens deviation in the prior art, and provides an artificial lens suspension device, which comprises a handle sleeve, a movable sleeve is slidably arranged in the handle sleeve, a movable core is slidably arranged in the movable sleeve, a lens loop sleeve ring which is movably connected at both ends is arranged in the movable core, the lens loop sleeve ring is formed by movably connecting the opposite bending of the both ends of a strip structure, a sleeve ring one-way lock is connected to one end of the lens loop sleeve ring, the other end of the lens loop sleeve ring extends into the movable sleeve through the sleeve ring one-way lock and the movable core and is connected with a one-way lock bar, and a one-way fixed lock is arranged on the one-way lock bar. The artificial lens suspension device has the advantages of short operation time, protection of intraocular tissues, simple operation, firm fixation of the artificial lens, etc.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to an artificial lens suspension device. Background Technology

[0002] Currently, the mainstream surgical approach for cataracts is phacoemulsification combined with intraocular lens (IOL) implantation. With the continuous improvement of ophthalmologists' surgical techniques, most patients receive IOL implantation in one stage. However, in some special cases, such as those with a history of ocular trauma, over-mature cataracts, or intraoperative complications, the posterior capsule of the lens may rupture, or the suspensory ligament may be torn. In these cases, conventional IOL implantation methods are not feasible, and a suspension IOL procedure is often chosen. This involves the surgeon suturing the IOL into the patient's eye using sutures. Clinically, in cases of traumatic cataracts, post-phacoemulsification, or post-intracapsular cataract extraction where there is insufficient posterior capsule support, a ciliary sulcus IOL suspension fixation technique is necessary when implanting a posterior chamber IOL. This procedure requires sutures to fix the IOL. If the sutures are only covered by the bulbar conjunctiva, the knots can eventually penetrate the conjunctiva, easily leading to late-stage intraocular infection or suture dehiscence, causing the lens to fall into the vitreous cavity. In addition, the ciliary sulcus intraocular lens suture suspension technique fixes the intraocular lens at two points, resulting in poor lens stability and a tendency to tilt. Therefore, posterior chamber intraocular lens sutureless fixation (also known as interscleral fixation intraocular lens suspension) is now being performed clinically.

[0003] There are various methods for intraocular lens (IOL) suspension. Current methods all involve inserting traction sutures through the eyeball wall and fixing them to the IOL during surgery, or pulling the IOL loop to the eyeball wall for fixation. This often requires a large incision for IOL implantation. During this process, using a small syringe to align the IOL suspension sutures through the eyeball wall can easily damage surrounding tissues. In cases with large eyeballs, there is a risk of unsuccessful alignment, suture slippage damaging intraocular tissues, and even serious complications. Furthermore, the surgery requires using ophthalmic microforceps to hold the IOL loop. Repeated clamping can cause wear on the IOL surface or breakage of the IOL loop, resulting in iatrogenic intraocular foreign bodies, thus prolonging the operation time and leading to severe postoperative reactions. Summary of the Invention

[0004] This invention provides an artificial lens suspension device to solve the technical problems of long operation time, loose sutures that are easy to fall off and cause serious consequences.

[0005] This invention provides an artificial lens suspension device, including a handle sleeve. A movable sleeve is slidably disposed inside one end of the handle sleeve, and a movable core is slidably disposed inside the movable sleeve. A lens loop collar is disposed inside the movable core. The lens loop collar is formed by bending and movably connecting the two ends of a strip-shaped structure. One end of the lens loop collar is connected to a one-way lock, and the other end extends through the one-way lock and the movable core into the movable sleeve and is connected to a one-way lock bar. The one-way lock bar has a one-way fixing lock. The lens loop collar and the one-way lock bar each have a plurality of one-way anti-reverse teeth arranged at equal intervals in the same direction. The one-way lock and the one-way fixing lock each have one-way anti-reverse teeth arranged in opposite directions. A booster for pushing the lens loop collar, movable core, and movable sleeve to move outwards sequentially is fitted inside the end of the handle sleeve away from the movable sleeve.

[0006] Its working principle and process are as follows:

[0007] Make vertical, straight scleral incisions of approximately 3mm each, 2.5mm-3mm posterior to the 9 o'clock and 3 o'clock positions on either side of the corneal limbus. Create a 2mm long scleral tunnel to enter the pupillary area from below the iris plane. Make another tunnel incision at the 10 o'clock position. Push one loop of the folded intraocular lens into the anterior chamber. First, use a pusher to push the lens loop collar through the handle cannula at the 9 o'clock position. Push it into the anterior chamber through the aforementioned tunnel opening to lock one loop of the lens. Further push the collar with a movable core to lock the lens loop collar in one direction, thus locking one loop of the intraocular lens. Remove the pusher, leaving a portion of the lens loop in place. With the locking bar remaining below the iris plane, and the handle sleeve withdrawn outside the scleral tunnel, the tail-end one-way locking lock is pushed out. The booster is removed, and the one-way locking bar and single-line locking lock are used to clamp the lens loop inside the scleral tunnel from outside. Excess one-way locking bar is cut off. The lens loop collar and collar one-way locking are adjusted and locked by one-way anti-retraction teeth in opposite directions. The one-way locking bar and one-way locking lock are clamped at the scleral tunnel by one-way anti-retraction teeth. The procedure is closed, and the scleral incision is sutured with one stitch intermittently. The other loop is operated on in the same way at the 3 o'clock position. The position of the artificial lens is checked to be centered. The procedure is completed.

[0008] Furthermore, the handle sleeve includes a handle tube and a rear sleeve. The handle tube includes a handle and a rear sleeve. The rear sleeve is T-shaped with the handle. The rear sleeve is coaxial with the rear sleeve and fixedly connected to the handle.

[0009] The handle tube is convenient for holding and fixing during operation, the rear sleeve is used to install and connect the booster, and the rear sleeve is used for the movement of the movable sleeve.

[0010] Furthermore, the booster includes a thumb pusher, a first push rod, a second push rod, and a third push rod. The thumb pusher is coaxially connected to the first push rod. The second push rod is disposed between the first and third push rods and is coaxially connected to both the first and third push rods. The diameters of the first, second, and third push rods decrease sequentially. The first push rod slides in fit with the inner hole of the handle sleeve. The second push rod slides in fit with the inner hole of the movable sleeve. The third push rod slides in fit with the inner hole of the movable core.

[0011] The thumb pusher is used for hand operation. The first, second, and third push rods move within the handle sleeve under force, thereby pushing out the movable sleeve, movable core, and lens loop ring to complete the surgical procedure.

[0012] Furthermore, the one-way fixed lock is a folding T-shaped silicone lock, including a lock cylinder with a one-way anti-reverse tooth and a folding stop loop disposed on the outer side of the lock cylinder. The lock cylinder is cylindrical and has a rectangular through hole along its axis, and the through hole is provided with a one-way anti-reverse tooth.

[0013] The one-way locking bar passes through the through hole and engages with the one-way anti-reverse tooth. The folding stop loop retracts and folds inside the movable sleeve. After being removed, it unfolds and can be locked inside the scleral tunnel.

[0014] Furthermore, the length of the thumb pusher protruding from the handle sleeve is the same as the movable length of the third push rod. The length of the third push rod is greater than the length of the movable core, the length of the second push rod is less than the length of the movable sleeve, and the length of the third push rod is less than the length of the handle sleeve.

[0015] The defined lengths of the first, second, and third push rods facilitate the accurate ejection of the movable sleeve, movable core, and crystal loop collar.

[0016] Furthermore, the crystal loop is made of PMMA (polyoxymethylene acrylate).

[0017] Furthermore, the one-way locking bar is made of silicone material.

[0018] In summary, the beneficial effects of the present invention are as follows:

[0019] This invention utilizes a lens loop collar with a one-way lock to lock and fix the lens loop, facilitating intraocular lens (IOL) suspension surgery. Simultaneously, the one-way locking strip, in conjunction with a one-way locking lock, secures the one-way locking strip within the scleral tunnel, further fixing the lens loop collar. Excess one-way locking strip is then trimmed, enabling rapid IOL suspension. This convenient and quick procedure saves surgical time, resulting in faster postoperative recovery and better outcomes. After the mold is manufactured, mass production can commence. Attached Figure Description

[0020] Figure 1 This is a front view of the overall structure of the present invention;

[0021] Figure 2 This is a partial structural diagram of the present invention;

[0022] Figure 3 This is a schematic diagram of the booster structure in this invention;

[0023] Figure 4 This is a schematic diagram of the one-way fixed lock in this invention.

[0024] In the diagram: 1. Crystal loop collar; 11. One-way collar lock; 2. Movable core; 3. Movable sleeve; 4. One-way fixed lock; 41. Lock cylinder; 42. Through hole; 43. Folding stop loop; 44. One-way anti-reverse tooth; 5. One-way lock bar; 6. Rear sleeve; 7. Handle; 8. Rear sleeve; 9. Pusher; 91. Thumb pusher; 92. First push rod; 93. Second push rod; 94. Third push rod. Detailed Implementation

[0025] Example 1:

[0026] like Figures 1-4 As shown, an artificial lens suspension device includes a handle sleeve, a movable sleeve 3 slidably disposed inside one end of the handle sleeve, and a movable core 2 slidably disposed inside the movable sleeve 3. Both the movable sleeve 3 and the movable core 2 are removable. A lens loop collar 1 is disposed inside the movable core 2. The lens loop collar 1 is formed by bending and movably connecting the two ends of a strip-shaped structure. One end of the lens loop collar 1 is connected to a one-way lock 11, and the other end extends through the one-way lock 11 and the movable core 2 into the movable sleeve 3 and is connected to a one-way lock bar 5. The one-way lock bar 5... The device is equipped with a one-way fixed lock 4, and one-way locking bars 5 are evenly distributed with one-way anti-reverse teeth. The crystal loop collar 1 and the one-way locking bars 5 are respectively provided with several one-way anti-reverse teeth 44 in the same direction at equal intervals. The collar one-way lock 11 and the one-way fixed lock 4 are provided with one-way anti-reverse teeth 44 in opposite directions. The one-way locking bars 5 and the one-way fixed lock 4 are connected by the one-way anti-reverse teeth 44 arranged on both. The end of the handle 7 sleeve away from the movable sleeve 3 is fitted with a booster 9 for pushing the crystal loop collar 1, the movable core 2 and the movable sleeve 3 to move outward in sequence.

[0027] The handle sleeve includes a handle tube and a rear sleeve 8. The handle tube includes a handle 7 and a rear sleeve 6. The rear sleeve 6 and the handle 7 are arranged in a T-shape. The edge of the handle 7 is arc-shaped. The rear sleeve 8 is coaxially arranged with the rear sleeve 6 and is fixedly connected to the handle 7.

[0028] The handle 7 tube is convenient for holding and fixing during operation, the rear sleeve 8 is used to install and connect the booster 9, and the rear sleeve 6 is used for the movement of the movable sleeve 3.

[0029] The booster 9 includes a thumb pusher 91, a first push rod 92, a second push rod 93, and a third push rod 94. The thumb pusher 91 is coaxially connected to the first push rod 92. The second push rod 93 is located between the first push rod 92 and the third push rod 94 and is coaxially connected to both the first push rod 92 and the third push rod 94. The diameters of the first push rod 92, the second push rod 93, and the third push rod 94 decrease sequentially. The first push rod 92 is slidably engaged with the inner hole of the handle 7 sleeve. The second push rod 93 is slidably engaged with the inner hole of the movable sleeve 3. The third push rod 94 is slidably engaged with the inner hole of the movable core 2.

[0030] The thumb pusher 91 is used for hand pressing. The first push rod 92, the second push rod 93 and the third push rod 94 will move within the sleeve of the handle 7 under force, thereby pushing out the movable sleeve 3, the movable core 2 and the crystal loop 1 to realize the surgical operation.

[0031] The one-way fixed lock 4 is a folding T-type silicone lock, including a lock cylinder 41 with a one-way anti-reverse tooth 44 and a folding stop 43 disposed on the outer side of the lock cylinder 41. The lock cylinder 41 is cylindrical and has a rectangular through hole 42 along the axis. The one-way anti-reverse tooth 44 is disposed in the through hole 42.

[0032] The length of the thumb pusher 91 exposed outside the handle 7 sleeve is the same as the movable length of the third push rod 94. The length of the third push rod 94 is greater than the length of the movable core 2. The length of the second push rod 93 is less than the length of the movable sleeve 3. The length of the third push rod 94 is less than the length of the handle 7 sleeve.

[0033] The crystal loop 1 is made of PMMA (polyoxymethylene acrylate).

[0034] The one-way locking bar 5 is made of medical-grade silicone material, and the one-way locking collar 11 is also made of medical-grade silicone material.

[0035] Its working principle and process are as follows:

[0036] Make vertical, straight scleral incisions of approximately 3mm each, 2.5mm-3mm posterior to the limbus at the 9 o'clock and 3 o'clock positions respectively. Create a scleral tunnel approximately 2mm long to enter the anterior chamber. Make another tunnel incision at the limbus at the 10 o'clock position. Push one loop of the folded intraocular lens into the anterior chamber. First, at the 9 o'clock position, use the pusher 9 to push out the lens loop collar 1 through the handle 7 sleeve. Push it into the anterior chamber through the aforementioned tunnel opening to lock one loop of the lens. Further push the collar one-way lock 11 using the movable core 2 to lock the lens loop collar 1, thus locking one loop of the intraocular lens. Remove the pusher 9, leaving a portion of the one-way lock strip 5 in place. Below the iris plane, after the handle 7 sleeve is withdrawn outside the scleral tunnel, the one-way locking lock 4 is pushed out, the booster 9 is removed, and the one-way locking bar 5 and the single-line locking lock are used to clamp the lens loop 1 into the tunnel outside the scleral tunnel. The excess one-way locking bar 5 is cut off. The lens loop 1 and the one-way locking bar 11 are used to adjust and lock the size of the lens loop 1 through the one-way anti-retraction teeth 44 in opposite directions. The one-way locking bar 5 and the one-way locking lock 4 are used to clamp the lens loop 1 into the scleral tunnel through the one-way anti-retraction teeth 44. The scleral incision is sutured with one stitch intermittently. The other loop is operated in the same way at position 3. Check that the position of the artificial lens is centered. The operation is completed. The one-way locking bar 5 passes through the through hole 42 and cooperates with the one-way anti-retraction teeth 44. The folding stop loop 43 is retracted and folded inside the movable sleeve 3. After being taken out, it can be unfolded and locked into the scleral tunnel. The defined lengths of the first push rod 92, the second push rod 93, and the third push rod 94 facilitate the accurate ejection of the movable sleeve 3, the movable core 2, and the crystal loop 1.

[0037] The design principle of the artificial lens suspension lock is as follows: 1. Upon first push, the head of the pusher 9 is designed to push out a folded lens loop collar 1. The lens loop collar 1 is initially folded inside the movable core 2. 2. Upon second push, the collar one-way lock 11 can lock the pushed-out lens loop collar 1. 3. After fully pushing out the T-shaped one-way locking lock 4 folded inward outside the sclera, the pusher 9 is removed. The length of the one-way lock bar 5 can be trimmed by yourself, and it can be tightened downward by pulling down with the one-way locking lock 4. Both the one-way locking lock 4 and the collar one-way lock 11 are one-way pullable slotted buckles, and their through holes 42 are equipped with one-way anti-reverse teeth 44.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An artificial lens suspension device, characterized in that, The device includes a handle sleeve, with a movable sleeve slidably disposed inside one end of the handle sleeve. A movable core is slidably disposed inside the movable sleeve, and a crystal loop collar is disposed inside the movable core. The crystal loop collar is formed by bending and movably connecting the two ends of a strip-shaped structure. One end of the crystal loop collar is connected to a one-way lock, and the other end extends through the one-way lock and the movable core into the movable sleeve and is connected to a one-way lock bar. The one-way lock bar has a one-way fixed lock. The crystal loop collar and the one-way lock bar each have several one-way anti-reverse teeth arranged at equal intervals in the same direction. The one-way lock and the one-way fixed lock each have one-way anti-reverse teeth arranged in opposite directions. A booster is fitted inside the handle sleeve at the end furthest from the movable sleeve to push the crystal loop collar, the movable core, and the movable sleeve outwards in sequence.

2. The artificial lens suspension device according to claim 1, characterized in that, The handle sleeve includes a handle tube and a rear sleeve. The handle tube includes a handle and a rear sleeve. The rear sleeve and the handle are arranged in a T-shape. The rear sleeve is coaxial with the rear sleeve and is fixedly connected to the handle.

3. The artificial lens suspension device according to claim 1, characterized in that, The booster includes a thumb pusher, a first push rod, a second push rod, and a third push rod. The thumb pusher is coaxially connected to the first push rod. The second push rod is disposed between the first and third push rods and is coaxially connected to both the first and third push rods. The diameters of the first, second, and third push rods decrease sequentially. The first push rod slides in fit with the inner hole of the handle sleeve. The second push rod slides in fit with the inner hole of the movable sleeve. The third push rod slides in fit with the inner hole of the movable core.

4. The artificial lens suspension device according to claim 1, characterized in that, The one-way fixed lock is a folding T-shaped silicone lock, including a lock cylinder with a one-way anti-reverse tooth and a folding stop loop set on the outer side of the lock cylinder. The lock cylinder is cylindrical and has a rectangular through hole along the axis, and the through hole is provided with a one-way anti-reverse tooth.

5. The artificial lens suspension device according to claim 3, characterized in that, The length of the thumb pusher protruding from the handle sleeve is the same as the movable length of the third push rod. The length of the third push rod is greater than the length of the movable core, the length of the second push rod is less than the length of the movable sleeve, and the length of the third push rod is less than the length of the handle sleeve.

6. The artificial lens suspension device according to claim 1, characterized in that, The crystal loop is made of PMMA (polyoxymethylene acrylate).

7. An artificial lens suspension device according to any one of claims 1-6, characterized in that, The one-way locking bar is made of medical-grade silicone material.

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