| CPC A61N 7/02 (2013.01) | 8 Claims |
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1. An ultrasonic device comprising:
a cartridge comprising a cartridge main body, and a transducer installed in the cartridge main body and configured to generate ultrasonic waves; and
a hand piece main body comprising a moving device configured to move the transducer,
wherein the moving device comprises:
a moving main body;
a moving block positioned on the moving main body and configured to be coupled to the transducer and move with the transducer;
a first magnetic member installed on the moving block;
a moving connection member connected to the moving block; and
a screw unit engaged with the moving connection member to allow the moving block to reciprocate, and provided with a bidirectional screw thread,
wherein the cartridge comprises a second magnetic member installed on the transducer,
wherein the transducer is configured to be magnetically coupled to the moving block by magnetically coupling the first magnetic member to the second magnetic member and move along with the moving block when the moving connection member moves, and
wherein the moving device in the hand piece main body is configured to be spatially separated from the transducer in the cartridge by separating the first magnetic member from the second magnetic member,
wherein the bidirectional screw thread comprises
a first screw thread formed on a surface of the screw unit along a first oblique direction,
a second screw thread formed on the surface of the screw unit along a second oblique direction that crosses the first oblique direction, and
a connecting screw thread configured to connect the first screw thread to the second screw thread,
wherein the connecting screw thread comprises a first connecting screw thread formed on one side of the screw unit,
wherein the first connecting screw thread includes a first sub-connecting screw thread, a second sub-connecting screw thread crossing the first sub-connecting screw thread, and a first direction changing screw thread that connects the first sub-connecting screw thread and the second sub-connecting screw thread and changes directions, and
wherein the first sub-connecting screw thread and the second sub-connecting screw thread are connected to each other by the first direction changing screw thread that is bent at a predetermined angle.
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