Foldable glaucoma aqueous humor drainage device

A technology for glaucoma and aqueous humor, applied in ophthalmic surgery, etc., can solve problems such as poor drainage of aqueous humor, elevated intraocular pressure, drainage failure, etc., and achieve the effect of reducing postoperative complications, reducing the probability of blockage, and improving the success rate

Inactive Publication Date: 2013-09-11
PEKING UNIV THIRD HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is ideal to use the existing drainage valve to control the intraocular pressure in the early stage after surgery, but generally after 2-3 weeks, the external opening is often blocked by the growing scar tissue around it, so that the aqueous humor is not discharged smoothly, and the intraocular pressure gradually rises High, and finally lead to drainage failure

Method used

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings, but the present invention is not limited to the following embodiments.

[0020] The foldable glaucoma aqueous humor drainage device provided by the present invention includes a drainage tube 1 and two foldable arc-shaped protective sheets 3 made of shape memory material fixed on the outer wall of a port 2 of the drainage tube 1, An unclosed cavity is formed between the two arc-shaped protective sheets 3, and a port 2 of the drainage tube 1 is located in the cavity of the unclosed cavity. A fixing hole 4 protruding from the outer wall is provided on the outer wall of the non-closed cavity external drainage tube 1 .

[0021] The outer diameter of the drainage tube 1 is 0.6 mm, and the inner diameter is 0.3 mm; the total length of the drainage tube 1 is 33 mm, of which the length outside the unclosed cavity is 25 mm, and the length extending into the unclosed cavity is 8 mm...

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Abstract

The invention provides a foldable glaucoma aqueous humor drainage device. The foldable glaucoma aqueous humor drainage device comprises a drainage pipe (1), wherein two foldable arc-shaped protective sheets (3) made of a shape memory material are fixedly arranged on the outer side wall of an end port (2) of the drainage pipe (1); an unclosed cavity is formed between the two arc-shaped protective sheets (3); and the end port of the drainage pipe is positioned inside the cavity body of the unclosed cavity. The foldable glaucoma aqueous humor drainage device has the advantages as follows: through the design of the two layers of the protective sheets outside an outer pipe orifice, the blockage probability of the outer orifice of the drainage pipe can be reduced; through the foldable design of the protective sheets, tissue damage can be reduced; and the foldable glaucoma aqueous humor drainage device can significantly improve the success rate of a glaucoma drainage valve implantation and reduce incidence of postoperative complications.

Description

technical field [0001] The invention relates to an extraocular implantation device, in particular to a foldable glaucoma aqueous humor drainage device. Background technique [0002] Glaucoma is the second most irreversible blinding eye disease in the world and one of the main blinding eye diseases in my country. Glaucoma is mainly due to the poor drainage of aqueous humor in the eye, which increases the intraocular pressure, and eventually leads to optic atrophy and blindness. For refractory glaucoma, the most commonly used surgery at home and abroad is glaucoma drainage valve implantation. The existing glaucoma drainage valve is mainly composed of a flexible silicone tube (ie drainage tube) and a drainage plate fixedly connected with one end (outer port) of the silicone tube. When implanting, the drainage disc is first implanted under the conjunctiva of the eye, and then the other end of the silicone tube is inserted into the eye, so that the intraocular aqueous humor flo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007
CPCA61F9/00781
Inventor 黄萍张纯
Owner PEKING UNIV THIRD HOSPITAL
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