US4751927A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair implantation method and device
Assignee: Individual
•
Filing: 1987-05-13
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Granted: 1988-06-21
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Expires: 2007-05-13
Abstract
Abstract Apparatus and method for the implantation of artificial hair in human skin. The apparatus comprises a metallic hair implanting needle having an engaging part for engaging a hair root part of a strand of artificial hair at the tip end of the needle, and an external cylinder housing the hair implanting needle. A high frequency electric current generating device is provided in electric circuitry connection with the hair implanting needle, and a switch is provided for selectively supplying high frequency current from the generating device to the needle momentarily when the tip of the needle carrying the hair root part of artificial hair is inserted into the skin.
Inventors
- 👤 Shiro Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:03
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
107 words
A hair implantation device comprising a metallic hair implanting needle having an engaging part for engaging a hair root part of a strand of artificial hair at a tip end of the needle, and external cylinder housing the hair implanting needle, a high frequency electric current generating device, for generating an alternating electric current of 0.5 to 10 MHz, in electric circuitry connection with the hair implanting needle, and a switch for selectively supplying high frequency current of about 0.5 to 10 MHz from the generating device to the needle momentarily when the needle carrying the hair root part of artificial hair is inserted into the skin.
Claim 2
Dependent Claim
107 words
A hair implantation device comprising a metallic hair implanting needle having an engaging part for engaging a hair root part of a strand of artificial hair at a tip end of the needle, and external cylinder housing the hair implanting needle, a high frequency electric current generating device, for generating an alternating electric current of 0.5 to 10 MHz, in electric circuitry connection with the hair implanting needle, and a switch for selectively supplying high frequency current of about 0.5 to 10 MHz from the generating device to the needle momentarily when the needle carrying the hair root part of artificial hair is inserted into the skin.
Claim 3
Dependent Claim
14 words
A device according to claim 1, wherein the switch is a foot activated switch.
Claim 4
Dependent Claim
40 words
A device according to claim 1, wherein the electric current generating device includes a timer to automatically control the length of time that the high frequency current is supplied to the needle, said time being about 0.1 to 0.3 second.
Claim 5
Dependent Claim
28 words
A device according to claim 1, wherein the electric circuitry of the generating device includes an electrode to be positioned in contact with an individual undergoing the implantation.
Claim 6
Dependent Claim
33 words
A device according to claim 2, wherein the electric circuitry of the generating device includes an electrode to be positioned in contact with the back of the neck of an individual undergoing implantation.
Claim 7
Dependent Claim
33 words
A device according to claim 3, wherein the electric circuitry of the generating device includes an electrode to be positioned in contact with the back of the neck of an individual undergoing implantation.
Claim 8
Independent Claim
80 words
A method for implanting a strand of artificial hair into human skin comprising positioning a hair root part of a strand of artificial hair at a tip end of a metallic hair implanting needle; and inserting the tip end of the needle and the hair root part into the skin so as to reach the top surface of the galea aponeurosis while simultaneously and momentarily passing high frequency alternating electric current of about 0.5 to 10 MHz through the needle.
Claim 9
Independent Claim
80 words
A method for implanting a strand of artificial hair into human skin comprising positioning a hair root part of a strand of artificial hair at a tip end of a metallic hair implanting needle; and inserting the tip end of the needle and the hair root part into the skin so as to reach the top surface of the galea aponeurosis while simultaneously and momentarily passing high frequency alternating electric current of about 0.5 to 10 MHz through the needle.
Claim 10
Dependent Claim
43 words
Method according to claim 7, wherein the electric current has a 20 W maximum output and a frequency of from about 1 MHz to about 2 MHz and is supplied to the needle for a period of from about 0.1 to 0.3 seconds.
Claim 11
Dependent Claim
24 words
The method of claim 5, wherein a grounding electrode is positioned in contact with the back of the neck of an individual undergoing implantation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-06-21 | 1991-12-21 | 1992-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-06-21 | 1995-12-21 | 1996-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-06-21 | 1999-12-21 | 2000-06-21 | $7700.00 | Window Closed / Lapsed |