A filter for a saliva suction tube

By designing a cylindrical support structure and a spiral track and channel structure for the filter, combined with baffles and filter holes, the problem of mucosal damage and blockage of saliva suction tubes in oral treatment is solved, achieving efficient impurity separation and improved comfort.

CN224524118UActive Publication Date: 2026-07-21SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SICHUAN UNIV
Filing Date
2025-08-26
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing saliva suction tubes are prone to causing mucosal damage due to negative pressure during oral treatment, and existing filter protective sleeves are easily clogged in complex oral environments, making it difficult to efficiently separate solid impurities in mixed liquids, and lacking impurity classification and guidance structures.

Method used

A protective sleeve for impurity filtration, comprising a cylindrical support structure and a filter screen, was designed. It adopts a spiral winding track and channel structure, and is equipped with baffles and filter holes. Combined with a medical oil gauze protective membrane, it achieves multi-stage separation and stable connection, avoids clogging, and improves comfort.

Benefits of technology

It significantly improves filtration efficiency, avoids localized filter clogging, reduces mucosal damage, and enhances diagnostic and treatment efficiency and patient comfort.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to a kind of impurity filter protective sleeve for saliva suction tube, it includes the sleeve body of sleeve connection in saliva suction tube end part, the sleeve body includes cylinder structure support and cylinder structure filter screen, the cylinder structure support is sleeved in cylinder structure filter screen outside, and first filtration space is reserved between cylinder structure filter screen, the inner wall of cylinder structure filter screen is provided with spiral rising encircling track, the top of cylinder structure filter screen is provided with sealing plate, the center of sealing plate is provided with downwardly extending plug-in barrel, the outer wall between plug-in barrel and encircling track forms channel that contains impurity.The utility model has realized the multistage stratified retention of impurity, avoid liquid backflow obstruction caused by filter screen local blockage simultaneously;Medical oil gauze protective film has bacteriostatic and pre-filtering function, cooperate elastic bandage to enhance the connection stability of sleeve body and saliva suction tube, avoid falling off in operation, outer layer medical oil gauze can also avoid and mucous membrane long time contact cause stickiness and breakage.
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