Dental coil spring extension device
OwnerEun Seung Leeinventor
Life of this patent
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Abstract
A dental coil spring extension device capable of extending a pitch of the dental coil spring is disclosed. The dental coil spring extension device includes a first grip part, a second grip part, and an extension part. The first grip part grips one coil of a coil spring. The second grip part grips the other coil of the coil spring. The extension part separates the first grip part and the second grip part to expand a distance between the one coil and the other coil. Each of the first grip part and the second grip part includes a recessed portion formed to surround a periphery of each of the one coil and the other coil of the coil spring. Thus, the load deflection rate of the dental coil spring itself may be increased, and the need for additional crimpable stops or arch wire replacement may be eliminated.
Claims4
A dental coil spring extension device comprising:
- a first grip part for gripping a first coil of a coil spring;
- a second grip part for gripping a second coil of the coil spring;
- and
- an extension part separating the first grip part and the second grip part to expand a distance between the first coil and the second coil,
- wherein each of the first grip part and the second grip part includes a recessed portion formed to surround a periphery of each of the first coil and the second coil of the coil spring,
- wherein the extension part comprises:
- a thumb grip part connected to the first grip part;
- a residual finger grip part connected to the second grip part;
- and
- a gap setting part disposed between the thumb grip part and the residual finger grip part to set a distance between the first grip part and the second grip part,
- wherein the gap setting part comprises:
- a gap adjusting cylinder having one side fastened to a hole formed in the thumb grip part;
- a gap adjusting plate disposed in an area in which a portion of an outer peripheral surface of the gap adjusting cylinder is opened and fastened to the hole formed in the thumb grip part;
- and
- a gap adjusting rod having a cylindrical shape and disposed inside the gap adjusting cylinder to set the distance between the first grip part and the second grip part.
Dependencies are inferred from the claim text.