A device for adjusting and cutting the length of a gingival retraction cord in the mouth

By designing a device that includes a suture groove and a suture cutting groove, the precise adjustment and cutting of the gingival retraction suture length is achieved, solving the problem of the difficulty in adjusting and cutting the gingival retraction suture length in the existing technology, and improving the operation efficiency and patient comfort.

CN224671637UActive Publication Date: 2026-08-25CENT SOUTH UNIV
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Patent Information

Application Number
CN202521534059.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-07-22
Publication Date
2026-08-25
Estimated Expiration
2035-07-22

AI Technical Summary

Technical Problem

In existing techniques, the length of the gingival retraction cord is difficult to adjust and cut precisely, which leads to prolonged operation time, waste of materials, and potential damage to the gums, affecting clinical outcomes and patient comfort.

Method used

A device comprising an upper body and a lower body is designed. The lower body has a groove for passing the gingival retraction line and a tangent groove, and is equipped with a telescopic adjuster and a press-type cutting tool assembly for adjusting and cutting the length of the gingival retraction line intraorally to ensure that it matches the cervical region of the tooth.

Benefits of technology

It enables precise adjustment and stable trimming of the gingival retraction line length, avoiding multiple trimmings and waste, improving operational efficiency, reducing damage to the gums, and enhancing clinical outcomes and patient comfort.

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Abstract

This application relates to the field of oral retraction technology, providing a device for adjusting and cutting the length of a retraction line intraorally. The device includes an upper body and a lower body. The lower body has a receiving cavity, and its front end has two parallel thread guide grooves. A tangent groove perpendicular to the thread guide grooves is also provided on the front end of the lower body. One end of the thread guide groove extends to the side of the lower body, and the other end extends to the receiving cavity. A telescopic adjuster with a movement direction perpendicular to the thread guide grooves is provided within the receiving cavity. A thread catcher is elastically mounted on the telescopic adjuster. Both ends of the retraction line pass through the two thread guide grooves and are caught on the telescopic adjuster by the thread catcher. A press-type cutting blade assembly is provided within the upper body. The cutting blade of the press-type cutting blade assembly is movably positioned above the tangent groove and can be inserted into the tangent groove and moved to the bottom to cut the retraction line. This device can adjust the length of the retraction line according to the current cervical circumference of the tooth and can cut it. It is convenient to operate and has good safety.
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