DRILL FOR DENTAL IMPLANT

• US 20190321144A1
• Filed: 04/18/2019
• Published: 10/24/2019
• Est. Priority Date: 04/23/2018
• Status: Active Grant

• Current Assignee: Truabutment Korea, Inc.
• Original Assignee: Truabutment Korea, Inc.
• Inventors: KIM, Haeng Oh, KIM, Sung Yong, KIM, Hyung Ick, LEE, Seung Hwa
• Granted Patent: US 12,036,090 B2
• Time in Patent Office: Days
• CPC Class Codes: A61B 2017/1651 for cooling
• CPC Class Codes: A61C 3/02 Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
• CPC Class Codes: A61C 8/0089 Implanting tools or instruments

Abstract

Provided herein is a drill for a dental implant. The drill for a dental implant includes a coupling part connected to a hand piece configured to provide a rotational force, a body part disposed below the coupling part and configured to transmit the rotational force downward, a cutting part including a plurality of cutting blades and a void section, the cutting blades being disposed below the body part in order to cut an alveolar bone and form a hole therein and being spaced apart at a predetermined angle in a rotational direction, and the void section being surrounded by the cutting blades along at least a portion of an inner circumference of the cutting blades, and a coolant passage configured to communicate with the void section by passing through the coupling part and the body part and configured to, while the alveolar bone is being cut, supply coolant to the void section so that the coolant is introduced to the cutting blades.

Claims

1. A drill for a dental implant, the drill comprising;

a coupling part connected to a hand piece configured to provide a rotational force;

a body part disposed below the coupling part and configured to transmit the rotational force downward;

a cutting part including a plurality of cutting blades and a void section, the cutting blades being disposed below the body part in order to cut an alveolar bone and form a hole therein and being spaced apart at a predetermined angle in a rotational direction, and the void section being surrounded by the cutting blades along at least a portion of an inner circumference of the cutting blades; and

a coolant passage configured to communicate with the void section by passing through the coupling part and the body part and configured to, while the alveolar bone is being cut, supply coolant to the void section so that the coolant is introduced to the cutting blades.

2. The drill of claim 1, wherein the void section has a cross-sectional area larger than that of the coolant passage and is disposed to be surrounded from an upper side of the cutting blades adjacent to the body part to a predetermined position of the cutting blades, and an inner side of the cutting blades disposed below the void section is integrally formed with the cutting blades without a void.

3. The drill of claim 1, wherein the cutting part further comprises a concave section disposed above the cutting blades, disposed to be adjacent to the body part, and having a form that is concave toward the body part,

wherein the coolant passage passes through an apex of the concave section.

4. The drill of claim 1, wherein the cutting part further comprises a curved section configured to connect an upper portion of a preceding cutting blade and an upper portion of a following cutting blade which are adjacent to each other when viewed in the rotational direction,

wherein the curved section is connected to the preceding cutting blade and the following cutting blade such that a curved surface of the curved section that is disposed at the upper portion of the preceding cutting blade has a gentler slope than a surface of the curved section that is disposed at the upper portion of the following cutting blade.

5. The drill of claim 1, wherein the void section exposed between a preceding cutting blade and a following cutting blade, which are adjacent to each other in the rotational direction, is exposed with a larger area toward the body part in a vicinity of the preceding cutting blade than in a vicinity of the following cutting blade.

6. The drill of claim 1, wherein:

each of the cutting blades includes upper cutting blades adjacent to the body part and lower cutting blades disposed below the upper cutting blade;

the void section is disposed to be surrounded by the upper cutting blades along at least a portion of an inner circumference of the upper cutting blade; and

a guide groove between the upper cutting blade and the lower cutting blade is provided to guide the coolant in a direction opposite to the rotational direction while the alveolar bone is being cut.

7. The drill of claim 1, wherein:

the cutting blade is formed as a helix type, and the void section is disposed to be surrounded by the cutting blade adjacent to the body part along a portion of an inner circumference of the cutting blade; and

the drill further comprises a side surface section formed as a surface without a step between the cutting blades below the void section.