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Schlemm canal dilatation stent and dilatation method

A catheter and elastic technology, which is applied in the expansion stent and expansion field for surgery, can solve the problems that the expansion effect of Schlemm's canal cannot be guaranteed, and the expansion state of Schlemm's canal can not be maintained for a long time.

Pending Publication Date: 2020-10-23
PEKING UNIV THIRD HOSPITAL
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Problems solved by technology

[0005] However, this operation cannot guarantee the expansion effect of Schlemm's canal and cannot maintain the dilated state of Schlemm's canal for a long time. Therefore, it is a technology that needs to be solved in this field to provide a device suitable for stably dilating Schlemm's canal to reduce the resistance of aqueous humor outflow. question

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  • Schlemm canal dilatation stent and dilatation method
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  • Schlemm canal dilatation stent and dilatation method

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. It should be noted that, in the case of no conflict, the embodiments in the present application and the feature vectors in the embodiments can be combined arbitrarily with each other.

[0024] The present application provides a schlemm's canal expansion stent, including: a catheter 10, the curvature of which is the same as that of the schlemm's...

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Abstract

The invention discloses a schlemm canal dilatation stent. The dilatation stent comprises a catheter, a stent body and a guide head, wherein the radian of the catheter is the same as that of a schlemmcanal; the outer side of the catheter is sleeved with the stent body, and the curvature radius of the stent body is the same as that of the catheter; the guide head is arranged at a first end of the catheter; the diameter of the catheter is smaller than the inner diameter of the schlemm canal; and the catheter is made of an elastic material, and the stent body is made of a plastic material. The dilatation effect of the schlemm canal dilatation stent on the schlemm canal is flexible and controllable; and a new aqueous humor outflow channel is formed in a trabecular meshwork, so that the aqueoushumor outflow resistance is reduced, damage to the trabecular meshwork is reduced, bleeding is reduced, related complications are reduced, and intraocular pressure is stably reduced.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to an expansion stent for surgery and an expansion method. Background technique [0002] Glaucoma is the second most common blinding eye disease in the world and the largest irreversible blinding eye disease. It is a chronic and progressive eye disease that endangers the optic nerve and visual function, with a prevalence rate of 2-3%. In the treatment of glaucoma, reducing intraocular pressure and improving prognosis by changing the balance of the outflow and inflow of aqueous humor is the most commonly used and recognized most effective means in the industry. Aqueous humor is produced by the ciliary muscle epithelium, and its outflow mainly enters Schlemm's canal through the trabecular meshwork distributed in the chamber angle, and then drains into the aqueous humor vein and returns to the vein. In addition, about 5 to 25 percent of the aqueous humor drains through the uveal-scl...

Claims

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Application Information

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IPC IPC(8): A61F9/007
CPCA61F9/00736A61F9/00781
Inventor 宋一帆张纯王薇
Owner PEKING UNIV THIRD HOSPITAL
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