Suture-free suspension type intraocular lens

Abstract

The utility model discloses a suture-free suspension type intraocular lens. The intraocular lens comprises an intraocular lens optical part, two to six lens loops, a fixed spinous process, a traction positioning line and a traction needle, the lens loops are semicircular ring-shaped lens loops extending from the edge of the intraocular lens optical part, and the lens loops are symmetrically distributed along the edge of the intraocular lens optical part; the fixed spinous process is provided with a thicker end and a thinner end, the thicker end of the fixed spinous process is fixedly connected to the symmetrical central axis of the edge of the ring body of the crystal loop, and the thinner end of the fixed spinous process is connected with a traction positioning line; one end of the traction positioning line is connected with the fixed spinous process, and the other end is connected with the traction needle. The intraocular lens can be filled through an implanter, operation is easy and convenient, suture fixation is not needed, the structural design of the intraocular lens enables the optical part of the intraocular lens to be well fixed, adverse consequences caused by suture fixation and suture fracture are avoided, and the intraocular lens has good clinical application prospects.

Description

Technical Field

[0001] The utility model relates to a suture-free suspended artificial lens, belonging to the technical field of artificial lenses. Background Art

[0002] At present, the mainstream method for cataract surgery is phacoemulsification plus intraocular lens implantation. With the continuous maturity of ophthalmologists' surgical techniques, most patients have intraocular lenses implanted in the first stage. However, for some special cases, such as patients with a history of eye trauma, overmature cataracts, complications during surgery, etc., it can lead to posterior lens capsule rupture or suspensory ligament rupture. At this time, intraocular lenses cannot be implanted by conventional methods. Intraocular lens suspension surgery is often chosen, that is, doctors sew the intraocular lens into the patient's eye with sutures through the suspension method. There are many different intraocular lens suspension techniques in clinical practice, and most of them use 10-0 polypropylene sutures. According to clinical observations, 28% of patients with this suture have suture breakage in 6 years, and conventional methods of guiding suture operation are more difficult, the operation time is long, and intraoperative complications are prone to occur. Summary of the invention

[0003] The purpose of the utility model is to provide a suture-free suspended artificial lens in view of the deficiencies in the prior art.

[0004] In order to achieve the above-mentioned object, the utility model provides a suture-free suspension intraocular lens, the intraocular lens comprises an intraocular lens optical part, a lens haptic, a fixed spinous process, a traction positioning wire and a traction needle, wherein:

[0005] The lens haptics are semicircular ring-shaped lens haptics extending from the edge of the optical part of the artificial lens, with 2 to 6 haptics in number, symmetrically distributed along the edge of the optical part of the artificial lens;

[0006] The fixed spinous process has a thicker end and a thinner end, wherein the thicker end is fixedly connected to the symmetrical central axis of the ring body edge of the lens haptic, and the thinner end is connected to a traction positioning wire;

[0007] One end of the traction positioning line is connected to the fixed spinous process, and the other end is connected to the traction needle.

[0008] Preferably, the material of the optical part of the artificial lens is acrylate.

[0009] Preferably, the fixed spinous process is a conical structure, the circular bottom of which is connected to the lens haptic and the tip of which is connected to the traction positioning wire.

[0010] Preferably, the traction positioning line is a polypropylene line.

[0011] Preferably, the traction needle is a metal needle with a thickness of 23-34G and a length of 5-15mm.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] (1) The artificial lens provided by the utility model can be filled through an implanter, which is easy to operate, can avoid suturing operations, avoid the use of more auxiliary tools and corresponding operations such as suture knots, can reduce the number of operating steps, shorten the operation time, reduce surgical complications caused by suture aging, breakage, etc., and reduce the tilt and misalignment of the lens caused by human operation factors;

[0014] (2) The structure of the artificial lens is ingeniously designed and easy to manufacture. By setting symmetrically distributed lens loops on the edge of the optical part of the artificial lens, the pulling force during the implantation process can be balanced. Therefore, the position of the optical part of the artificial lens can be adjusted to be centered under the pulling action of the traction positioning line, and the direct pulling action on the optical part of the artificial lens during implantation is avoided. The fixed spines set on the lens loops can be well fixed in the ciliary body pars plana tissue, thereby playing a good fixing effect on the artificial lens and avoiding the adverse consequences of suture fixation and suture breakage. Therefore, the artificial lens has good clinical application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 A schematic diagram of the structure of a suture-free suspension intraocular lens provided in an embodiment - a front view;

[0016] Figure 2 A schematic diagram of the structure of a suture-free suspension intraocular lens provided in an embodiment - a side view;

[0017] Figure 3 Schematic diagram of the structure of an artificial lens with three lens loops;

[0018] Figure 4 Schematic diagram of the structure of an artificial lens with four lens haptics;

[0019] Figure 5 For existing implant pictures;

[0020] Figure 6 This is a frontal cross-sectional view of the eye;

[0021] Figure 7 This is a side profile of the eye;

[0022] Figure 8 This is a simulation diagram of the state of the artificial lens of the utility model after implantation;

[0023] Figure numerals: 1. optical part of intraocular lens; 2. lens haptic; 3. fixed spinous process; 4. traction positioning wire; 5. traction needle. DETAILED DESCRIPTION

[0024] In order to make the present invention more clearly understood, preferred embodiments are described in detail below with reference to the accompanying drawings.

[0025] Example

[0026] This embodiment provides a suture-free suspension intraocular lens, such as Figures 1 to 4 As shown, the intraocular lens comprises an intraocular lens optical part 1, a lens haptic 2, a fixed spinous process 3, a traction positioning wire 4 and a traction needle 5, wherein:

[0027] The material of the optical part 1 of the artificial lens is acrylic, and the two sides are convex and round for light transmission. Acrylic is a foldable artificial lens material, which is soft and has a shape memory function. It is foldable and has a diameter of 4-6.5mm.

[0028] The lens haptic 2 is a semicircular lens haptic extending from the edge of the artificial lens optical part 1. The lens haptic 2 is made of medical elastic material. The elastic material can adapt to tensile strain. The elastic material can be made of polyurethane material. The lens haptic 2 is used to stabilize the optical part of the artificial lens while centering it. The number of lens haptics can be set to 2 to 6, which are symmetrically distributed along the edge of the artificial lens optical part. The total length (diameter) of the lens haptic plus the artificial lens optical part is 10-15mm.

[0029] The fixed spinous process 3 is made of a hard material, and the hard material can be medical hard plastic, such as polyethylene (PE), polytetrafluoroethylene (PTFE), or medical silicone rubber and other materials. The fixed spinous process 3 is used to be fixed in the tissue, is cone-shaped, and is easy to be buried in the tissue. It is easy to fix the implant while causing less damage. The circular bottom of the fixed spinous process 3 is fixedly connected to the symmetrical central axis of the ring body edge of the lens haptic 2. The tip of the fixed spinous process 3 is connected to a traction positioning line 4, which is brought into the flat part of the ciliary body tissue by the traction positioning line 4. The height of the fixed spinous process 3 from the tip to the bottom is 0.3-2mm. This size is designed to be smaller than the thickness of the eyeball wall, so that it will not pierce the eyeball even if it is completely buried in the eyeball wall.

[0030] The traction positioning line 4 can be made of the same polypropylene suture as the surgical suture, with a length of 1-10 cm, one end of which is connected to the fixed spinous process 3 and the other end is connected to the traction needle 5.

[0031] The traction needle 5 can be a metal fine needle with a specification of 23-34G (G represents the thickness of the metal needle) and a length of 5-15mm.

[0032] The intraocular lens is filled or pre-filled by an implanter, which is derived from the prior art, such as Figure 5 shown.

[0033] The artificial lens implantation process provided by the utility model is as follows:

[0034] (1) Mydriasis and routine ophthalmic disinfection and draping;

[0035] (2) Depending on the intraocular pressure, post-irrigation is selected or not. When the intraocular pressure is stable, the conventional two-incision intraocular lens implantation is performed, with the main incision at 10:00-12:00 and the secondary incision at 2:00-3:00;

[0036] (3) Locate and mark the sclera 2.0-3.5 mm behind the corneal limbus;

[0037] (4) The traction needle 5 attached to the intraocular lens is inserted into the eye through the main incision and exits from the scleral marking point;

[0038] (5) Implanting an artificial lens into the anterior chamber with a lens implanter and adjusting the position of the lens to be behind the pupil;

[0039] (6) Pull the traction positioning wire 4 toward the outside of the sclera to center the lens;

[0040] (7) Tighten the traction positioning wire 4 and cut the traction positioning wire 4 close to the sclera, so that the traction positioning wire 4 retracts into the sclera tissue by itself. Figure 8 This is a simulation diagram of the state of the artificial lens of the utility model after implantation.

[0041] The above-mentioned implementation cases are only preferred implementation cases of the present utility model, and are not any formal and substantial limitations of the present utility model. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the present utility model, and these improvements and supplements should also be regarded as the scope of protection of the present utility model.

Claims

1. A suture-free suspension intraocular lens, characterized in that: The intraocular lens comprises an intraocular lens optical part, a lens haptic, a fixed spinous process, a traction positioning wire and a traction needle, wherein: The lens haptics are semicircular ring-shaped lens haptics extending from the edge of the optical part of the artificial lens, with 2 to 6 haptics in number, symmetrically distributed along the edge of the optical part of the artificial lens; The fixed spinous process has a thicker end and a thinner end, wherein the thicker end is fixedly connected to the symmetrical central axis of the ring body edge of the lens haptic, and the thinner end is connected to a traction positioning wire; One end of the traction positioning line is connected to the fixed spinous process, and the other end is connected to the traction needle.

2. The suture-free suspension intraocular lens according to claim 1, characterized in that: The material of the optical part of the artificial lens is acrylic ester.

3. The suture-free suspension intraocular lens according to claim 1, characterized in that: The fixed spinous process is a conical structure, the circular bottom of which is connected to the lens loop, and the tip of which is connected to the traction positioning line.

4. The suture-free suspension intraocular lens according to claim 1, characterized in that: The traction positioning line is a polypropylene line.

5. The suture-free suspension intraocular lens according to any one of claims 1 to 4, characterized in that: The traction needle is a metal needle with a thickness of 23-34G and a length of 5-15mm.

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