Dental implant guide tools

Abstract

A dental implant guiding tool includes: a handle; a guide connected to the handle; and a drill bit connected to one end of the guide relative to the handle, having a bone fragment collection groove and a plurality of cutting portions; the bone fragment collection groove is formed axially inside the drill bit, the cutting portions are arranged around the outer edge of the drill bit, and the maximum outer diameter of the cutting portions gradually tapers away from the guide, so that the outer contour of the drill bit is stepped.

Claims

1. A dental implant guiding tool, comprising: a handle; a guide connected to the handle; and a drill bit connected to one end of the guide relative to the handle, having a bone fragment collection groove and a plurality of cutting portions; the bone fragment collection groove being formed axially inside the drill bit, the cutting portions being disposed around the outer edge of the drill bit, and the maximum outer diameter of the cutting portions tapering away from the guide, such that the outer contour of the drill bit is stepped.

2. The dental implant guide tool as claimed in claim 1, wherein the drill bit includes a plurality of cutting edges, one end of which is connected to the guide and the other end extends in a direction away from the guide and intersects with each other, wherein the cutting edges are formed on the outer edge of the cutting edges.

3. The dental implant guiding tool as claimed in claim 2, wherein the drill bit further includes a plurality of grooves; each groove is formed between two adjacent cutting edges and communicates with the bone fragment collection groove.

4. The implant guiding tool as described in claim 2, wherein each of the blade portions has at least one notch formed on its inner edge adjacent to the bone fragment collection groove.

5. The implant guiding tool as claimed in claim 4, wherein the inner edge of each of the blade portions includes a plurality of the notches arranged in a stepped manner.

6. The implant guiding tool as claimed in claim 2, wherein the drill bit includes three cutting edges, and the cutting edges are arranged radially at 120-degree intervals.

7. The dental implant guide tool as claimed in claim 6, wherein the drill bit has a first cutting portion, a second cutting portion and a third cutting portion sequentially formed on the outer edge of the three cutting edges in a direction away from the guide and towards the guide; the maximum outer diameter of the first cutting portion is smaller than the maximum outer diameter of the second cutting portion, and the maximum outer diameter of the second cutting portion is smaller than the maximum outer diameter of the third cutting portion.

8. The implant guide tool as claimed in claim 1, wherein the space of the bone fragment collection groove adjacent to the guide is greater than the space of the bone fragment collection groove away from the guide.

9. The dental implant guide tool as claimed in claim 1, wherein the guide has a guide body and a first flange disposed at the bottom end of the guide body and adjacent to the top end of the drill bit, and the maximum outer diameter of the first flange is greater than the maximum outer diameter of the drill bit.

10. The implant guide tool as claimed in claim 9, wherein the guide further includes a second flange disposed on the guide body and adjacent to the bottom end of the handle, and the maximum outer diameter of the second flange is greater than the maximum outer diameter of the guide body.

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