Importance

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Abstract

A retractable built-in interdental brush includes a built-in interdental brush, a retractable mechanism, and a handle. The built-in interdental brush is connected to the retractable mechanism. By driving the retractable mechanism, the built-in interdental brush can be driven to extend from the handle to clean a gap between teeth. After use, the built-in interdental brush retracts into an accommodation space of the handle through the retractable mechanism, so that the handle can form a compact instrument box, which is very convenient to carry. An end surface of a delivery device of the built-in interdental brush is an inclined surface and is at an angle β to an axial direction of the retractable built-in interdental brush is, where the angle β is less than 90°.

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First Claim