Medicine injecting tip, hand piece, and skin treating device
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United States of America Patent
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Oct 1, 2024
Grant Date -
Sep 15, 2022
app pub date -
May 27, 2022
filing date -
Jul 2, 2018
priority date (Note) -
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status (Latency Note)
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Abstract
Provided are a medicine injecting tip, which injects a medicine into a hole in a skin formed by a needle while invading the needle to a preset depth of a deep portion of the skin, a hand piece equipped with the medicine injecting tip, and a skin treatment device using the medicine injecting tip. The medicine injecting tip includes a cylinder, a plunger that reciprocates downward and upward, and has a first space and a second space formed inside the cylinder, and a needle disposed in the plunger and disposed in the second space of the cylinder. The needle is inserted into a skin and a negative pressure state is formed in the second space when the plunger moves downward, and the needle is discharged from the skin and a positive pressure state is formed in the second space, when the plunger moves upward.
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