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Lacrimal canal bracket with aliform fixing part

A technology of fixing part and nasolacrimal duct, applied in the direction of stent and other directions, can solve the problems of complicated operation, long length of fixing part, scarring, etc., and achieve the effect of simplifying the manufacturing process, reducing the contact area and reducing discomfort.

Inactive Publication Date: 2009-04-15
肖满意
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Lacrimal duct exploration has little damage and is easy to operate, but the long-term effect is unstable and the recurrence rate is high. It is especially not suitable for the treatment of chronic dacryocystitis, so its application is limited
Among the current methods for the treatment of nasolacrimal duct obstruction and chronic dacryocystitis, dacryocystorhinostomy is more effective and has a higher success rate. There are scars on the face, and sometimes the operation cannot be performed due to surgical contraindications; at the same time, the operation changes the original anatomical channel of the lacrimal duct. Once the postoperative anastomotic fibers form scars or ossification, the anastomotic stoma is blocked and the lacrimal duct is re-obstructed , lost the chance of reoperation
In order to reduce the surgical injury and not change the original anatomical channel of the lacrimal duct, there is currently a method of using nasolacrimal duct stents for treatment, but most of the fixing parts of the existing nasolacrimal duct stents have curved structures, and the main defects are: curved structures The production process is complicated, the bending and forming are difficult, and the bending angle is difficult to ensure uniformity; the bending part is easy to form a barrier to the common lacrimal duct, and it is not convenient for the collection and drainage of tears; Patient feels unwell

Method used

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  • Lacrimal canal bracket with aliform fixing part
  • Lacrimal canal bracket with aliform fixing part

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Embodiment Construction

[0015] Such as figure 1 , figure 2 As shown, the nasolacrimal duct stent with wing-shaped fixing parts of the present invention includes a drainage tube 1 and at least two wing-shaped fixing parts 2. In this embodiment, four wing-shaped fixing parts 2 are provided, and one end of each wing-shaped fixing part 2 It is fixed at the head end of the drainage tube 1 , and the other end extends obliquely in a radial shape, which eliminates the curved structure, simplifies the manufacturing process, and is easy to ensure that the shape of each wing-shaped fixing part 2 is uniform. The included angle α between each wing-shaped fixing portion 2 and the drainage tube 1 is 20°-70°, preferably 30°-50°, and is 35° in this embodiment. The length of the wing-shaped fixing part 2 is shortened, and the contact area with the patient's lacrimal sac is small, which can reduce the discomfort of the patient. When it is implanted into the patient's nasolacrimal duct, it can be folded into a thin t...

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Abstract

The invention discloses a nasolacrimal duct bracket for wing-shaped fixed parts, which comprises a drainage tube and at least two wing-shaped fixed parts, wherein one end of the wing-shaped fixed part is fixed at the head end of the drainage tube, while the other end extends radically and obliquely. The nasolacrimal duct bracket for the wing-shaped fixed parts has the advantages that the bracket is convenient to collect tears and drain, can maintain smooth movement of the nasolacrimal duct, has simple manufacture, and so on.

Description

technical field [0001] The invention relates to a treatment tool for diseases such as nasolacrimal duct obstruction and chronic dacryocystitis, in particular to a nasolacrimal duct stent with a wing-shaped fixing part. Background technique [0002] Both nasolacrimal duct obstruction and chronic dacryocystitis are common eye diseases. At present, lacrimal duct exploration and rhinosacral dacryocystostomy are mainly used for treatment. Lacrimal duct exploration has little damage and is easy to operate, but its long-term effect is unstable and the recurrence rate is high. It is especially not suitable for the treatment of chronic dacryocystitis, so its application is limited to a certain extent. Among the current methods for the treatment of nasolacrimal duct obstruction and chronic dacryocystitis, dacryocystorhinostomy is more effective and has a higher success rate. There are scars on the face, and sometimes the operation cannot be performed due to surgical contraindications...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/92
Inventor 肖满意戴珊珊
Owner 肖满意
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