Lacrimal stent, and application method therefor

A lacrimal duct and catheter technology, which is applied in the field of medical devices, can solve the problems of difficult position adjustment, weak support performance, affecting the use effect, etc., and achieves the effects of small installation resistance, good compliance, and easy installation.

Inactive Publication Date: 2005-11-09
张德玉
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  • Abstract
  • Description
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Problems solved by technology

However, at present, all kinds of nasolacrimal duct stents are mostly made of silica gel, medical rubber and other materials. Their structure leads to easy fall off, difficult adjustment of the position during installation, difficult operation during installation, weak support performance, easy aging, and poor permeability. , affecting the clinical use effect

Method used

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  • Lacrimal stent, and application method therefor

Examples

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Embodiment Construction

[0023] In FIG. 1 , the lacrimal duct stent includes a tube body 2 , a traction catheter 4 running through the tube body 2 , and a tail wire 6 installed on the side wall at the tail end of the tube body 2 , and a tail plate 3 . The tube body 2 is made of silicone rubber-coated metal material and is in the shape of a barrel. There is a winding body made of medical wire on the outer wall. The cross section of the wire is D-shaped. The outer side of the winding body is an arc surface, and the inner side for the plane. Tube head 1 expands into a funnel shape, and wraps a warhead-shaped soluble medical crystal on it. The crystal can be a detachable traction head 5 made of ice bombs, sucrose crystals or other soluble medical crystals, which can reduce the resistance of installation , and it is not necessary to dilate the lacrimal duct in advance. There is a tail plate 3 at the tail end of the pipe body 2, and its diameter is the same as the outer diameter of the pipe body. There is ...

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Abstract

A supporting frame of lacrimal passage is composed of a tubular body with an expanded head having a detachable drawing unit and a wound body on its external surface, a drawing cathether passing through said tubular body, and the tail thread on the side wall at tail end of tubular body. Its application includes such steps as local sterilizing, anesthesia, expanding lacrimal point, inserting drawing cathether connected to detachable drawing unit, tubular body and tail plate, drawing the supporting frame in lacrimal passage, removing the drawing cathether, tail plate and tail thread, and dropping the liquid to dissolving the detachable drawing unit.

Description

technical field [0001] The invention relates to a medical appliance, in particular to a lacrimal duct support for treating the obstruction of the lacrimal sac and nasolacrimal duct caused by various reasons. Background technique [0002] Epiphora caused by stenosis and blockage of lacrimal sac or nasolacrimal duct is a common and frequently-occurring disease in ophthalmology, which seriously affects the quality of life of patients. At present, the classic way to treat this kind of disease is dacryocystorhinostomy, but this operation is not only complicated, the damage is serious, and it is easy to leave scars on the face after operation, so most patients are unwilling to accept it. The rise of nasolacrimal duct stents in recent years provides a new idea for the treatment of this disease. However, at present, all kinds of nasolacrimal duct stents are mostly made of silica gel, medical rubber and other materials. Their structure leads to easy fall off, difficult adjustment of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/04
Inventor 张德玉高克学伊存廷
Owner 张德玉
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