Artificial iris capable of fixing artificial lens as well as material and processing method of artificial iris

An intraocular lens and iris technology, applied to eye implants and other directions, can solve the problems of cataracts, lens capsular bag lesions, difficult surgical operations, etc., and achieves the operation of avoiding suture fixation, convenient fixation, and simple and easy operation. Effect

Active Publication Date: 2017-01-04
EYEBRIGHT SUZHOU MEDICAL APP & INSTR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The suture fixation method is to pass the suture through the tissue and fix the artificial implant through the thread. The space in the eye is limited, and it is very difficult to suture and overlap in the eye. The surgical operation is difficult and the surgical effect is limited.
[0008] The haptic support method is to use haptics to support the end of the closed space in a limited closed space to play a supporting role. This operation method is simple and easy to operate, such as the internal fixation of the intraocular lens capsular bag, but the limitation of this method Because the operation can only be performed in a closed space, it is not suitable for the fixation of the artificial iris at the anterior chamber angle or ciliary sulcus
[0009] The existing artificial iris surgery is usually fixed on the remaining iris or the root of the iris, or in the ciliary sulcus by means of sutures. This method requires complex sutures and knotting operations in a narrow and closed space in the eye. Difficulty, which limits the operation
Many patients with iris defects cannot receive effective treatment
[0010] In addition, patients with iris damage due to lesions and traumas often have lens diseases or traumas, not only cataracts, but also lesions or injuries of the lens capsule, which makes it difficult to fix the intraocular lens

Method used

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  • Artificial iris capable of fixing artificial lens as well as material and processing method of artificial iris
  • Artificial iris capable of fixing artificial lens as well as material and processing method of artificial iris
  • Artificial iris capable of fixing artificial lens as well as material and processing method of artificial iris

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Proportion: Silicone color masterbatch composition 35% iron black and 65% silica gel, weigh the silicone MED6820 (A, B) component ratio according to 1:1, then add the color masterbatch dosage 0.5% silica gel color masterbatch, mix evenly, Debubble under -0.1MPa vacuum for 10 minutes, then inject the mixed silica gel into the mold through a pressurizer, put the mold in an oven at 140°C, and take it out after 30 minutes. The processed artificial iris septum 1 has a diameter of 12 mm, a thickness of 0.5 mm, a diameter of the central hole 2 of 4 mm, and three loops 4 .

[0061] After testing, the light transmittance at the wavelength of 300-1100nm is ≤0.03%. The Shore hardness (Shore A) is 45, the elongation is 82.2%, the tear strength of loop 4 is 0.55N / mm, and the tensile strength of the artificial iris septum is 650KPa.

Embodiment 2

[0063] Proportion: 20% carbon black and 80% silica gel for silica gel color masterbatch: Weigh the components of silica gel MED6820 (A, B) according to 1:1, then add 2.0% silica gel masterbatch, mix well, Debubble under -0.1MPa vacuum for 10 minutes, then inject the mixed silica gel into the mold through a pressurizer, put the mold in an oven at 140°C, and take it out after 40 minutes. The processed artificial iris septum 1 has a diameter of 11 mm, a thickness of 0.40 mm, a diameter of the central hole 2 of 3.5 mm, and three loops 4 .

[0064] After testing, the light transmittance at the wavelength of 300-1100nm is ≤0.03%, the Shore hardness (Shore A) is 40, the elongation is 91.5%, the tear resistance of loop 4 is 0.51N / mm, and the tensile strength of the artificial iris septum is The strength is 632KPa.

Embodiment 3

[0066] Proportion: Silicone color masterbatch composition 35% iron black and 65% silica gel, weigh the silicone MED6820 (A, B) component ratio according to 1:1, then add the color masterbatch dosage of 1.0% silica gel color masterbatch, mix well, Debubble under -0.1MPa vacuum for 10 minutes, then inject the mixed silica gel into the mold through a pressurizer, put the mold in an oven at 150°C, and take it out after 30 minutes. The processed artificial iris septum 1 has a diameter of 12 mm, a thickness of 0.40 mm, a diameter of the central hole 2 of 4.5 mm, and three loops 4 .

[0067] After testing, the light transmittance at the wavelength of 300-1100nm is ≤0.03%. The Shore hardness (Shore A) is 37, the elongation is 94.3%, the tear strength of the loop 4 is 0.45N / mm, and the tensile strength of the artificial iris septum is 620KPa.

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PUM

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Abstract

The invention provides an artificial iris capable of fixing an artificial lens as well as a material and a processing method of the artificial iris. The artificial iris comprises an artificial iris diaphragm, a loop for fixing the artificial iris, and a fixing structure for fixing the artificial lens. By utilizing the self convex structure of the artificial iris, the artificial iris can penetrate through the sclera wall and be flexibly fixed to the sclera wall, so that the operation of fixing the suture is avoided, the operation is simple and feasible, the iris is kept stable in the eye, meanwhile, a suture used for fixing is not needed during implantation, the viscoelasticity enables the iris to easily pass through the small incision, and no injury is caused. The artificial iris provided by the invention is further provided with the fixing structure for fixing the artificial lens, so that the artificial lens can be conveniently fixed to the iris as for the cataract patient with the injured sac.

Description

technical field [0001] The invention relates to the field of medical equipment, in particular to an artificial iris capable of fixing an intraocular lens and its material and processing method. Background technique [0002] The iris belongs to the middle layer of the eyeball, in front of the ciliary body, it can automatically adjust the size of the pupil, and play a role in adjusting the amount of light entering the eye. As a biological soft tissue material, iris has viscoelastic properties such as hysteresis, relaxation, creep, and strain rate dependence. [0003] The important mechanical properties of the iris make it possible that when aniridia or iris defect is caused by eye trauma or congenital abnormality of the eye, there will often be abnormal eyeball functions, such as spherical aberration, increased aberration, diplopia, glare, photophobia, amblyopia and post-traumatic Low vision, and reduced visual acuity. [0004] Since the atrophic iris cannot be regenerated b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/14
Inventor 郝燕生肖真解江冰周建魏永吉
Owner EYEBRIGHT SUZHOU MEDICAL APP & INSTR CO LTD
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