Lacrimal passage device

Abstract

The invention relates to a lacrimal passage device which comprises a tube body. The lacrimal passage device is characterized in that the tube body comprises solid pipelines which are positioned at both ends and inserted into a lacrimal passage and a hollow soft pipeline positioned between the two solid pipelines at both ends; the side wall of the hollow soft pipeline, which is exposed out of the lacrimal passage, is provided with an injection hole; and side wall of the hollow soft pipeline, which is positioned in the lacrimal passage, is provided with a liquid outlet. The lacrimal passage device has the advantages of combination of softness and hardness, integrated design, easiness of placement and taking out, little pain, time and labor conversation, easiness of operations, combination of hollowness and solidness, injury reduction and convenience for washing and conformity to the physiological structure and shape of the lacrimal passage.

Description

【Technical field】 [0001] The present invention relates to a medical device, more specifically to a lacrimal duct device which can be used for rebuilding the lacrimal duct or repairing the trauma of the lacrimal duct. 【Background technique】 [0002] Lacrimal duct obstruction disease caused by various inflammations and traumas is a common disease in ophthalmology, accompanied by symptoms such as epiphora and pus, which brings great inconvenience and pain to patients. [0003] Lacrimal cannulation is a common method of treatment for lacrimal duct obstruction. The currently used lacrimal cannula is a rigid epidural tube or a soft silicone tube. The spinal anesthesia cannula has poor tissue compatibility, is hard in texture, and has obvious irritation symptoms, which can easily cause discomfort to the patient, tear the punctum, or even prolapse by itself, causing inconvenience to the patient's life and making it impossible to indwell for a long time. Although the soft silicone ...

AI Technical Summary

Problems solved by technology

Spinal anesthesia cannula has poor tissue compatibility, hard texture, obvious irritation symptoms, easy to cause discomfort to patients, and easy to tear puncta, or even prolapse by itself, causing inconvenience to patients' lives, and cannot be left in place for a long time

Although the soft silicone tube has good compatibility, it is soft and cannot be directly implanted into the lacrimal duct. Most of them need to be guided by metal wires, silk threads or epidural tubes. The operation also often causes damage to the lacrimal puncta, lacrimal canaliculus, nasal cavity and pharynx, which brings great pain to the patient.

[0004] The common disadvantage of the above two types of lacrimal duct intubation is that the lacrimal duct cannot be flushed during the tube period.

If the lacrimal duct is flushed, the needle needs to be inserted into the narrow gap between the lacrimal duct wall and the lacrimal duct cannula. The flushing needle is likely to cause iatrogenic damage to the lacrimal duct wall, and even form iatrogenic lacrimal duct obstruction, which leads to treatment failure. s failure

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