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Supporting artificial tube

A technology of prosthetic tube and guide tube, which is applied in the fields of medical science, prosthesis, ophthalmic surgery, etc. It can solve the problems of obvious irritation symptoms, tearing of puncta, affecting beauty, etc., and achieves good tissue compatibility and easy operation , Good effect of preventing adhesion

Inactive Publication Date: 2007-08-15
ZHONGSHAN OPHTHALMIC CENT SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the poor tissue compatibility of the spinal anesthesia tube and its hard texture, the patient feels severe discomfort, the irritation symptoms are obvious, and it is easy to cause tearing of the punctum, so it cannot be left in place for a long time
In addition, during this period, because one end of the implanted spinal anesthesia tube is located in the nasolacrimal duct and the other end is exposed to the face, it not only affects the beauty, but also is easy to touch or even come out when washing the face, causing inconvenience to the patient's life and even affecting the curative effect
[0005] At present, the treatment of lacrimal duct stenosis mainly adopts repeated probing of the lacrimal duct or balloon expansion. Since the dilation is only a short-term expansion of more than ten minutes, the curative effect is not good.

Method used

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  • Supporting artificial tube
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Examples

Experimental program
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Effect test

Embodiment 1

[0020] As shown in Fig. 1-Fig. 3, a kind of supporting tube is composed of retention tube 1

[0021] and two guide tubes 2 respectively connected to one end of the retention tube, the diameter of the retention tube 1 and the guide tube 2 is 1 mm, wherein the guide tube 2 is provided with a scale mark 4; the retention tube 1 is soft The hollow tube of the material can be prepared from silicone rubber, various metal spring samples or medical plastics, and the outer surface is provided with a scale mark 5; the guide tube 2 is a hollow tube with a closed end, and the guide tube 2 A side hole 3 is opened at the junction with the retention pipe 1, and a side hole 6 is also provided near the end closure on the guide pipe 2. Usually, the side hole 6 is 1.5-2 times the diameter of the side hole from the end closure distance so that the inserted guide wire, etc. does not pass through it. Through the side hole 3 at the junction with the retention tube, a rod with a certain hardness can ...

Embodiment 2

[0031] The supporting artificial tube structure of this embodiment is similar to the supporting artificial tube structure described in Embodiment 1, the difference is that the guide tube 2 of this embodiment supporting the artificial tube has a certain curvature, which is in line with the patient's normal nasolacrimal duct curvature Basically the same.

[0032] In lacrimal duct recanalization, lacrimal canaliculus fracture repair, and lacrimal duct stenosis treatment, the guide tube 2 with a certain radian of the present invention can be inserted into the lacrimal duct from the upper and lower lacrimal puncta respectively, and the guide tube marked with scale The inner arc of the tube 2 faces upward, along the arc guide tube 2 passes through the lacrimal sac and nasolacrimal duct to the nasal cavity, and passes through the nasal vestibule by itself, without using a snare or with the assistance of a nasal endoscope to guide the tube 2 into the nasal cavity. Pull out the nasal c...

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PUM

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Abstract

The invention discloses a support pipe, which contains detention pipe, wherein two ends of detention pipe connect guide pipe, which treats blocked lacrimal passage and traumatic fracture; the support pipe can be transplanted into narrow passage without infection, which is compatible with tissue.

Description

technical field [0001] The present invention relates to medical surgical operation material, more specifically relates to a kind of support tube that can be used for rebuilding lacrimal duct or repairing lacrimal duct trauma. Background technique [0002] Lacrimal duct obstruction and lacrimal (total) duct trauma rupture are common and frequently-occurring diseases in ophthalmology, which bring misery to patients. [0003] At present, surgical treatment is the main treatment for nasolacrimal duct obstruction at home and abroad, and dacryocystorhinostomy is the most commonly used. In recent years, silicone tubes or spinal anesthesia tubes have been implanted in various minimally invasive lacrimal duct operations. Silicone tubing is widely used because of its good tissue compatibility. However, because of its soft texture, it cannot be directly implanted into the lacrimal duct. At present, metal wires, silk threads or spinal anesthesia tubes are often used in clinics to guid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F9/007A61F2/02A61M39/00
Inventor 王智崇陈冬万鹏霞
Owner ZHONGSHAN OPHTHALMIC CENT SUN YAT SEN UNIV
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