Dental bur, implant handpiece, and dental drilling device

By designing a retractable dental bur and implant handpiece system, the problem of insufficient operating space in dental implant surgery was solved, enabling precise preparation of implant sockets in narrow areas, improving the safety and accuracy of the surgery, and ensuring ideal implant placement.

WO2026123469A1 Publication Date: 2026-06-18PEKING UNIV SCHOOL OF STOMATOLOGY

Patent Information

Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
PEKING UNIV SCHOOL OF STOMATOLOGY
Filing Date
2025-02-26
Publication Date
2026-06-18

AI Technical Summary

Technical Problem

In dental implant surgery, especially when operating in the molar region near the pharynx, fixed-length dental burs are insufficient to provide enough operating space, which limits the accuracy and efficiency of the surgery. In addition, the use of auxiliary tools increases the need for patients to open their mouths, affecting the accuracy of implant placement angle and site.

Method used

A dental bur was designed, including a sleeve and a retractable cutting rod. The retraction and extension of the cutting rod are achieved through the linkage and anti-rotation limit components between the sleeve and the cutting rod. In conjunction with the drive system of the implant handpiece, the requirement for operating space is reduced. The extension and extension of the cutting rod are controlled by fluid pressure to ensure the angular and positional accuracy of the cutting part.

🎯Benefits of technology

Precise preparation of implantation cavities was achieved in confined spaces, reducing reliance on auxiliary tools, improving the safety and precision of the surgery, ensuring the ideal implantation angle and site, and reducing the risk of damage to healthy tissues.

✦ Generated by Eureka AI based on patent content.

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Abstract

A dental bur (1), an implant handpiece (2), and a dental drilling device. The dental bur (1) comprises: a sleeve (11), an axial first end of the sleeve (11) being configured to be drivably connected to a drive part (23) of the implant handpiece (2) so as to rotate under the driving of the drive part (23); a cutting rod (12), an axial first end of the cutting rod (12) being located in the sleeve (11), the cutting rod (12) being telescopically arranged relative to the sleeve (11) in the axial direction, and the cutting rod (12) being configured to have a synchronous rotation state with the sleeve (11); and a cutting portion (13) connected to an axial second end of the cutting rod (12), the cutting portion (13) being close to or away from the axial second end of the sleeve (11) following the telescopic movement of the cutting rod (12) relative to the sleeve (11).
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