Drainage type canalis nasolacrimalis expander

Abstract

The invention relates to a drainage type canalis nasolacrimalis expander comprising a front end traction line (1); one end of the traction line is a tubular drainage tube (2); the outer wall of the drainage tube is attached with an expansion capsule (3); the end of the expansion capsule (3) is provided with a pressurize tube port; the drainage tube exits the expansion capsule and extends so as to bond with the pressurize tube, thus forming the drainage tube lower end (4); the pressurize tube bonds with the drainage tube lower end (4) and extend to form the pressurize tube (5); the pressurize tube bonds with an expanded round body so as to form a pressurize valve (6); the lacrimal traction line can lead the expansion capsule (3) into the canalis nasolacrimalis; an injector can extract air or liquid, and the air or liquid can be injected by the pressurize valve; the drainage type canalis nasolacrimalis expander can expand the canalis nasolacrimalis, and can drainage the liquid in the lacrimal; the expandable portion after the traction line is a soft capsule structure; the canalis nasolacrimalis is a flat tubular cavity; the expansion capsule (3) can deform and expand along with the canalis nasolacrimalis shape; the length of the expansion capsule (3) is the canalis nasolacrimalis physiological size, and the capsule wall of the final 1 / 3 section of the expansion capsule (3) is thickened; when the canalis nasolacrimalis expands to the right position, the tube is pulled; the injector needle can insert the pressurize valve and extract the air or liquid in the expansion capsule (3), so the expansion capsule (3) becomes a thin round strip with the outer diameter under 1.5mm; finally the pressurize valve and pressurize tube are pulled so as to slowly remove the drainage type canalis nasolacrimalis expander.

Description

Technical field [0001] The invention belongs to the technical field of medical appliances, and in particular is a drainage type nasolacrimal duct dilator, a medical device for treating nasolacrimal duct obstruction or stenosis and causing tearing. Background technique [0002] As we all know, the treatment of tearing diseases caused by obstruction or stenosis of the nasolacrimal duct is treated by traditional external or internal dacryocystorhinostomy with reliable curative effect. However, surgery is traumatic, bleeding, and expensive. In external dacryocystorhinostomy, there are scars on the inner canthus of the eye. In internal dacryocystorhinostomy, a lower lacrimal duct support should be placed in the lacrimal duct; the other method is to use a lacrimal duct threading probe to penetrate the lacrimal duct. The traction line is placed outside the nose, and the traction line then introduces the lower lacrimal duct expansion line or lower lacrimal duct support from the nasal ca...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of unsatisfactory expansion and drainage of the nasolacrimal duct and excessive damage to the nasolacrimal duct and surrounding tissues

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