Ultrasonic cosmetic treatment device
First Claim
1. An ultrasonic cosmetic treatment device for treating the skin, comprising:
- an ultrasonic vibrator probe that contacts a skin;
an ultrasonic oscillation circuit that moves the ultrasonic vibrator probe;
a detection circuit that converts an impedance of the ultrasonic vibrator into an envelope voltage of an oscillation level and detects contact and non-contact of the ultrasonic vibrator probe with the skin by comparing the envelope voltage of the oscillation level with a reference voltage;
an oscillation control circuit that changes an oscillation output level applied to the ultrasonic vibrator probe when the detection circuit detects a change between the contact and non-contact of the ultrasonic vibrator probe with the skin.
3 Assignments
0 Petitions
Accused Products
Abstract
Since the electrical impedance of an ultrasonic vibrator may vary according to the contact or non-contact of an application member with the skin, a detection circuit detects the contact or non-contact of the application member with the skin by converting the current the ultrasonic vibrator current into a voltage, and a comparator compares this voltage with a reference voltage. When contact is detected by the detection circuit, a constant-voltage circuit sets the level of the constant voltage output to the ultrasonic oscillation circuit at a standard voltage, but when non-contact is detected, the constant voltage is switched to a lower-level constant voltage. Thus, when non-contact is detected, the level of the ultrasound emitted from the ultrasonic vibrator via the application member is lowered, so that an unnecessary rise in the temperature of the application member is be prevented.
177 Citations
20 Claims
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1. An ultrasonic cosmetic treatment device for treating the skin, comprising:
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an ultrasonic vibrator probe that contacts a skin;
an ultrasonic oscillation circuit that moves the ultrasonic vibrator probe;
a detection circuit that converts an impedance of the ultrasonic vibrator into an envelope voltage of an oscillation level and detects contact and non-contact of the ultrasonic vibrator probe with the skin by comparing the envelope voltage of the oscillation level with a reference voltage;
an oscillation control circuit that changes an oscillation output level applied to the ultrasonic vibrator probe when the detection circuit detects a change between the contact and non-contact of the ultrasonic vibrator probe with the skin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
means for stopping the oscillating operation of said ultrasonic oscillation circuit when abnormalities occur in the control pulse signal output by said pulse oscillation circuit.
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3. The ultrasonic cosmetic treatment device according to claim 1, wherein said ultrasonic vibrator probe comprises an application member attached to an ultrasonic vibrator.
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4. The ultrasonic cosmetic treatment device according to claim 3,
wherein said oscillation control circuit lowers a level of the oscillation output after a predetermined delay time has elapsed since the change from contact to non-contact of the application member with the skin is detected by said detection circuit. -
5. The ultrasonic cosmetic treatment device according to claim 3, further comprising:
a display that displays the status of contact or non-contact of the application member of said probe with the skin in accordance with the detection results obtained by said detection device, and switches from a status display of contact to one of non-contact after a predetermined delay time has elapsed since the change from contact to non-contact of said application member with the skin is detected by said detection circuit.
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6. The ultrasonic cosmetic treatment device according to claim 5, further comprising:
a display delay circuit that delays said change in said display by a predetermined delay time, said display thereby changing at the expiration of the predetermined delay time after said detection circuit detects a change in contact of said ultrasonic vibrator probe with the skin.
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7. The ultrasonic cosmetic treatment device according to claim 6, wherein said display delay circuit includes a delay timer that begins counting the predetermined delay time when non-contact of said ultrasonic vibrator probe with the skin is detected by said detection circuit, and wherein when contact of said ultrasonic vibrator probe with the skin is detected during the predetermined delay time, the display delay timer is interrupted and the counting is restarted.
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8. The ultrasonic cosmetic treatment device according to claim 3, wherein said application member comprises a metal.
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9. The ultrasonic cosmetic treatment device according to claim 3, wherein the oscillation control circuit lowers a level of the oscillation output in response to a change from contact to non-contact of said application member with the skin, and increases the level of the oscillation output in response to a change from non-contact to contact of said application member with the skin.
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10. The ultrasonic cosmetic treatment device according to claim 1, further comprising:
a delay circuit between the detection circuit and the oscillation control circuit that delays a signal from the detection circuit to the oscillation control circuit by a predetermined delay time, said oscillation control circuit thereby changing the level of vibration of said ultrasonic vibrator probe at the expiration of the predetermined delay time after said detection circuit detects a change in contact of said ultrasonic vibrator probe with the skin.
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11. The ultrasonic cosmetic treatment device according to claim 10, wherein said delay circuit includes a delay timer that begins counting the predetermined delay time when non-contact of said ultrasonic vibrator probe with the skin is detected by said detection circuit, and wherein when contact of said ultrasonic vibrator probe with the skin is detected during the predetermined delay time, the delay timer is interrupted and the counting is restarted.
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12. The ultrasonic cosmetic treatment device according to claim 1, further comprising:
a display connected to said detection circuit that changes when said detection circuit detects a change in contact of said ultrasonic vibrator probe with the skin.
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13. The ultrasonic cosmetic treatment device according to claim 12, wherein said display comprises a non-contact display part and a contact display part, and wherein said display turns on one of said non-contact display part and said contact display part wherein said detection circuit detects a change in contact of said ultrasonic vibrator probe with the skin.
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14. The ultrasonic cosmetic treatment device according to claim 1, further comprising:
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a pulse oscillation circuit that outputs a control pulse signal that controls a vibration time of the ultrasonic vibrator probe; and
a pulse-passing circuit that stops vibration of the ultrasonic vibrator probe when abnormalities occur in the control pulse signal output by said pulse oscillation circuit.
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15. The ultrasonic cosmetic treatment device according to claim 14, wherein said pulse-passing circuit passes only control pulse signals having less than a predetermined pulse length.
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16. The ultrasonic cosmetic treatment device according to claim 14, wherein if the control pulse signals remain at one level for longer than said predetermined pulse length, said pulse-passing circuit blocks the transmission of said control pulse signals, thereby suppressing the vibration of said ultrasonic vibrator probe.
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17. The ultrasonic cosmetic treatment device according to claim 1, wherein the detection circuit changes the reference voltage when detecting the change of contact and non-contact of the ultrasonic vibrator probe with the skin.
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18. An ultrasonic cosmetic treatment device for treating skin, comprising:
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a probe having an application member with a skin-contacting surface;
an ultrasonic vibrator attached to a side of said application member opposite from said skin-contacting surface; and
a housing;
an ultrasonic oscillation circuit having an oscillation output that drives the ultrasonic vibrator;
a detection circuit that converts an impedance of the ultrasonic vibrator into an envelope voltage of an oscillation level and detects contact and non-contact of said application member with a skin by comparing the envelope voltage of the oscillation level with a reference voltage; and
an oscillation control circuit that lowers a level of the oscillation output in response to a change from contact to non-contact of said application member with the skin, and increases the level of the oscillation output in response to a change from non-contact to contact of said application member with the skin, wherein said ultrasonic oscillation circuit, said detection circuit and said oscillator circuit are housed in said housing. - View Dependent Claims (19, 20)
a display that displays the status of contact or non-contact of the application member of said probe with the skin in accordance with the detection results obtained by said detection device, and changes from a status display of contact to a status display of non-contact after a predetermined delay time has elapsed since detection of a change from contact to non-contact of said application member with the skin by said detection circuit; and
a display delay circuit that delays said change in said display by a predetermined delay time, said display thereby changing at the expiration of the predetermined delay time after said detection circuit detects a change in contact status of said ultrasonic vibrator probe with the skin.
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20. The ultrasonic cosmetic treatment device according to claim 18, wherein the detection circuit changes the reference voltage when detecting the change of contact and non-contact of the application member with the skin.
Specification