Lacrimal sac expansion air bag for improving success rate of lacrimal sac and nasal cavity anastomosis operation

Abstract

The invention relates to a lacrimal sac dilatation air bag for improving the success rate of lacrimal sac and nasal cavity anastomosis, the air bag is provided with an air bag main body and an air tube, the air bag main body has two forms before and after inflation, and the effective outer diameter of the air bag main body after inflation can be 4mm or more. The air pipe is provided with an internal air pipe wrapped by the air bag body and an exposed external air pipe, the end of the internal air pipe is provided with a pushing head capable of abutting against the inner wall of the air bag body, the external air pipe is provided with an inflation port, the internal air pipe is provided with an air outlet port, and the air outlet port is provided with a one-way air valve. The one-way air valve comprises two thin film sheet bodies which can be tightly attached to prevent air in the air bag body from leaking, and an air inlet channel for the air supply pipe to supply air into the air bag body can be formed between the two thin film sheet bodies. The expansion size of the air bag body can be controlled automatically, so that the expanded size of the air bag body just meets the lacrimal sac expansion requirements of different patients, the lacrimal sac expansion effect is good, and the air bag body is not prone to being broken.

Description

technical field [0001] The invention relates to the technical field of dacryocystorhinostomy, in particular to a lacrimal sac expansion air bag for improving the success rate of dacryocystorhinostomy. Background technique [0002] Chronic dacryocystitis is a relatively common eye disease. Due to various reasons, the nasolacrimal duct is narrowed or blocked, causing tears to remain in the lacrimal sac and cannot be discharged. Surgery is the main method to achieve lacrimal duct recanalization. The main methods include internal or endoscopic dacryocystorhinostomy, lacrimal duct catheterization and so on. Endoscopic dacryocystorhinostomy has become the first choice for chronic dacryocystitis because of its high success rate and no facial scars. Endoscopic dacryocystorhinostomy surgery requires longitudinal incision of the lacrimal sac and anastomosis of the nasal mucosa on both sides. For patients with small lacrimal sacs, the postoperative lacrimal sac anastomosis is poorly f...

AI Technical Summary

Problems solved by technology

However, the method of dilating the lacrimal sac by absorbing the moisture in the lacrimal sac and maintaining the swollen state for a certain period of time has problems such as limited expansion force of the self-expanding microspheres and prone to breakage of the self-expanding microspheres.

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