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Schlemm canal expansion stent

A technology of Schlemm's canal and tube length, which is applied in stents, ophthalmic treatment and other directions, can solve the problems of high manufacturing process requirements, small pre-installation diameter and high manufacturing cost, and achieves low manufacturing process requirements, low manufacturing cost, and high manufacturing cost. simple structure

Inactive Publication Date: 2013-08-21
王宁利
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such an expandable stent has a small pre-installed diameter and excellent flexibility, but its structure is more complicated, its manufacturing process is more demanding, and its manufacturing cost is slightly higher.

Method used

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  • Schlemm canal expansion stent
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Embodiment Construction

[0041] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Such as figure 1 As shown, the expansion stent 1 of Schlemm's canal (Schlemm) of the present invention is in a unidirectional spiral shape; the outer diameter of the expansion stent 1 is adapted to the inner diameter of Schlemm's canal (Schlemm); the expansion stent 1 The length of the tube is adapted to the tube length of Schlemm's canal (Schlemm).

[0043] In this embodiment, because the expansion stent of Schlemm's canal (Schlemm) is in a unidirectional helical technical means, the expansion stent has a simple structure, low manufacturing process requirements, and low manufacturing cost, which is favorable for popularization and application. And because the outer diameter of the expanded stent is adapted to the inner diameter of Schlemm's canal (Schlemm); the length of the expanded stent is adapted to the tube length of Sch...

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Abstract

The invention discloses a Schlemm canal expansion stent which is in a one-way spiral shape. The outer diameter of the expansion stent is matched with the inner diameter of a Schlemm canal. The length of the expansion stent is matched with the length of the Schlemm canal. Or, the length of the expansion stent is matched with the length of the nidus of the Schlemm canal. The expansion stent can also be a secondary expansion stent. Or, the expansion stent is formed by connecting a plurality of secondary expansion stents in series. The Schlemm canal expansion stent is simple in structure, low in manufacturing process requirement, low in manufacturing cost, and beneficial for popularization and application. The Schlemm canal expansion stent is not only suitable for treatment of a late glaucoma patient, but also suitable for treatment of an early glaucoma patient and treatment of a secondary glaucoma patient.

Description

technical field [0001] The invention relates to an ophthalmic stent, in particular to a Schlemm canal (Schlemm) expansion stent for placing in the intraocular Schlemm canal (Schlemm). Background technique [0002] Glaucoma is a serious public health disease. More specifically, glaucoma is an optic neuropathy (disease of the optic nerve), which is usually caused by poor drainage of aqueous humor in the eye, resulting in increased intraocular pressure. Increased pressure in the eye damages the optic nerve and narrows the field of vision. When the patient has persistent high eye pressure, it can lead to blindness in the patient. [0003] The eye is a hollow structure that contains a clear fluid called "aqueous humor". Aqueous humor is formed in the posterior chamber of the eye via the ciliary body at a rate of approximately 2.5 microliters per minute. The fluid produced at a fairly constant velocity then passes around the lens and through the pupil opening in the iris into t...

Claims

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Application Information

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IPC IPC(8): A61F9/00A61F2/88
Inventor 王宁利牟大鹏
Owner 王宁利