Biological scleral contraction tape and its preparation method

Abstract

The invention discloses a biologic sclera contraction band and a preparing method thereof. The biologic sclera contraction band is in a band as a whole; the cross section of the biologic sclera contraction band is arc-shaped; the biologic sclera contraction band is thickest in the middle and gradually becomes narrower from the middle to the two sides through arc-shaped transition; the whole length of the biologic sclera contraction band is 3-40mm; the middle thickness of the biologic sclera contraction band is 1-3mm; the thickness of the two sides of the biologic sclera contraction band is 0.5-2mm; the band width of the biologic sclera contraction band is 3-8mm. The biologic sclera contraction band can be applied to combination with a biologic posterior sclera reinforcing band, can contract sclera and limit the expansion of the sclera, is used for treating high myopia macular retinal detachment, full retinal detachment and other certain non-incremental retinal detachments and better keeps and protects retinal structures and functions. The base material of the biologic sclera contraction band is taken from the trachea, ligament, trunk vessel or cartilage of an animal, the strength is increased through genipin cross-linking solidifying treatment, the elasticity and the hardness are proper, and the biologic sclera contraction band cannot be easily absorbed, has great tissue compatibility, causes few complications and overcomes the defects of the conventional retinal detachment intra and extra surgeries.

Description

technical field [0001] The invention relates to an ophthalmic medical instrument, in particular to a biological scleral contraction belt and a preparation method thereof. Background technique [0002] Retinal detachment is a common clinical disease in ophthalmology. Due to the limitations of the current treatment methods for retinal detachment, the clinical efficacy of retinal detachment is often poor, especially in patients with high myopia. Retinal detachment is more difficult to treat and can easily cause blindness. Blindness is even considered irreversible and incurable. [0003] The main cause of retinal detachment in high myopia is related to the continuous expansion of the sclera. The continuous expansion of the sclera will also expand the chorioretina, so it will gradually become thinner, and leopard-like changes in the fundus will appear, such as atrophy, degeneration, and holes. If the chorioretinal Following the relative lag of the expansion, it will lead to sepa...

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Problems solved by technology

However, after the biofilm material crosslinked by glutaraldehyde is implanted into the human body, it will degrade and release glutaraldehyde, which is cytotoxic, affects the safety of biofilm material implantation, and is prone to calcification

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