Lacrimal passage drainage apparatus

A drainage device and lacrimal duct technology, applied in the field of medical devices, can solve the problems of difficult fixation and poor stability, and achieve the effects of convenient drainage, improved stability and avoidance of injury.

Inactive Publication Date: 2016-02-24
LANZHOU SEEMINE SMA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Surgical treatment of lacrimal duct obstruction requires the use of a lacrimal duct drainage tube to drain tears through the lacrimal duct dr

Method used

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  • Lacrimal passage drainage apparatus

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[0012] The present invention will be described in detail below with reference to the drawings and specific embodiments.

[0013] Such as figure 1 As shown, the lacrimal duct drainage device of the present invention is composed of a main tube 1, a drainage tube 2 and a support tube 3. The main tube 1 and the support tube 3 form a straight tube, and a drainage tube 2 is provided on the side wall of the straight tube. The tube 2 is connected to the main tube 1, one end of the drainage tube 2 is connected to the main tube 1, the other end of the drainage tube 2 is a free end, the drainage tube 2 and the support tube 3 form an angle; the inner diameter of the main tube 1 is larger than the drainage tube 2, the inner diameter of the drainage tube 2 is greater than or equal to the inner diameter of the support tube 3; on the side wall of the main pipe 1, the side wall of the drainage tube 2 and the side wall of the support tube 3 are irregularly distributed with several irregular diamet...

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Abstract

The invention provides a lacrimal passage drainage apparatus consisting of a main tube, a drainage tube and a supporting tube, wherein the main tube and the supporting tube form a straight tube; the side wall of the straight tube is provided with the drainage tube communicated with the main tube; the inner diameter of the main tube is greater than that of the drainage tube; and the inner diameter of the drainage tube is greater than that of the supporting tube. The lacrimal passage drainage apparatus has a tee structure, and the angle between the drainage tube and the supporting tube is designed according to a human body physiological anatomical structure to ensure that the drainage apparatus is closer to a human tissue structure to achieve a comfortable effect; the supporting tube and a nasolacrimal duct form a supporting structure to achieve an effect of supporting stably and ensure that the lacrimal passage drainage apparatus is fundamentally improved from the structural stability. Moreover, by virtue of the contact between a trunk and a lacrimal sac, tears can be drawn conveniently; and the drainage tube of a branch contacts with a nasal cavity to facilitate drainage of tears, and the edges of the trunk and the branch and the connection part between the drainage tube and the supporting tube adopt smooth circular arc transitions to avoid harms to a human body.

Description

technical field [0001] The invention belongs to the technical field of medical devices and relates to a lacrimal duct drainage device. Background technique [0002] Lacrimal duct obstruction is a common and frequently-occurring disease in ophthalmology. It is a disease that often occurs at the junction of the lacrimal puncta, lacrimal canaliculus, lacrimal sac and nasolacrimal duct, and the lower opening of the nasolacrimal duct. The main symptom is epiphora. Come discomfort, affect the face. Long-term tear maceration can cause chronic irritant conjunctivitis, eczematous dermatitis of the lower eyelids and cheeks. If the patient wipes his tears for a long time, it can cause lower eyelid eversion, further aggravating the symptoms of epiphora. The principle of treatment for lacrimal duct obstruction is to control the inflammation of the lacrimal sac and restore or establish a drainage channel from the lacrimal sac to the nasal cavity. If the treatment is not complete, there...

Claims

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Application Information

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IPC IPC(8): A61M25/14A61F9/007
CPCA61M25/0026A61F9/00736A61M25/0071A61M2210/0612
Inventor 刘增平缪祥文王亮亮聂永胜郑亚亚宋丽霞
Owner LANZHOU SEEMINE SMA CO LTD
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