A device for quickly cleaning periapical lesion tissue

By adjusting the linkage structure of the knob, adjusting rod, and flexible scraper, and the low-speed rotating water spray function, the compatibility and safety issues of dental instruments when removing periapical lesions are solved, achieving efficient and safe bone cavity cleaning.

CN121287335BActive Publication Date: 2026-03-24BEIJING STOMATOLOGY HOSPITAL CAPITAL MEDICAL UNIV
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Patent Information

Application Number
CN202511882879.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-12-15
Publication Date
2026-03-24
Estimated Expiration
2045-12-15

AI Technical Summary

Technical Problem

Existing dental instruments suffer from poor adaptability, incomplete removal, and insufficient safety when removing periapical lesions. In particular, hand-held curettes cannot adapt to bone cavities of different sizes and shapes, resulting in blind spots, low efficiency, and easy damage to bone tissue.

Method used

It adopts a linkage structure of adjustment knob-adjustment rod-flexible scraper, combined with low-speed rotation and synchronous water spray function. The scraper shape is adaptively adjusted through threaded transmission. It uses a flexible nickel-titanium alloy scraper and barbed scraper, and works with a dental slow motor to achieve integrated scraping, cooling and cleaning.

Benefits of technology

It enables efficient and thorough removal of bone cavities of different sizes and shapes, improving the removal rate and safety, reducing the risk of bone tissue damage, simplifying the operation process and reducing costs.

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Abstract

The present application relates to the field of endodontic instruments, and discloses a device for quickly cleaning periapical lesion tissue, comprising a guide head, a scraping rod, a scraping spike, an adjusting rod, a main handle, an adjusting knob and a ring-shaped clamping groove; the guide head is fixed at the top end of the adjusting rod, the elastic scraping rods are evenly distributed along the circumference of the cone bottom of the guide head, the scraping spike is integrally formed with the scraping rod, the scraping spike is in the shape of a barb and is evenly distributed along the length direction of the scraping rod, the two ends of the scraping rod are respectively connected to the cone bottom of the guide head and the ring-shaped clamping groove at the front end of the main handle, the elastic adjusting rod penetrates through the channel of the main handle, and the adjusting knob is sleeved on the outside of the main handle and is in threaded engagement with the adjusting rod. The linkage adjusting structure of the adjusting knob-adjusting rod-scraping rod and the elastic material can be contracted, expanded and bent, so as to adapt to the structure of the periapical bone cavity, realize complete scraping and cleaning of the periapical lesion tissue, solve the problems of poor adaptability and blind area of the hand-held curettes, have high scraping efficiency and standardized operation, are safe and do not cause damage to bone tissue, have good cleaning effect and clear vision.
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