Patent US1672596A successfully refreshed from Google Patents.
US4378019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair implanting appliance
Assignee: Individual
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Filing: 1980-07-02
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Granted: 1983-03-29
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Expires: 2000-07-02
Abstract
Abstract A hair implanting appliance for directly implanting an artificial hair in a human skin comprises a needle formed at its leading end with a notch which is sized and shaped to retain the root portion of the hair. The needle is snugly and slidably received in the through hole of a sheath such that its leading end can protrude from the leading end of the sheath into the human skin to a depth necessary for the hair implantation. The sheath has at least a portion of its leading open end merge into the open edge of the notch at the leading end of the needle when this needle is retracted into the sheath and this structure forms the guide surface of the root portion retained in the notch.
Inventors
- 👤 Shiro Yamada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:40
CPC Classifications
A; A61; A61F; A61F2/00; A61F2/02; A61F2/10; A61B; A61B17/00; A61B2017/00743; A61B2017/00747; A61B2017/00752
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
306 words
A hair implanting appliance comprising: means to penetrate the scalp comprising a needle having its leading end formed with a generally V-shaped notch formed by a pair of surfaces at least one of which is inclined and at least one of which extends from the tip of said needle, said V-shaped notch being sized and shaped to retain the root of an artificial hair to be implanted; means to guide said needle without penetrating the scalp comprising a sheath formed with a through hole which has substantially the same inside diameter as the outside diameter of said needle, said sheath having a scalp abutting leading end and at least one inclined guide surface extending rearwardly from said scalp abutting end, said needle being slidably received in said sheath (i) such that the leading end of said needle can protrude from said scalp abutting leading end of said sheath and project into a human skin to a depth necessary for the hair implantation and (ii) such that said inclined guide surface of said sheath merges with and forms a continuation of said inclined surface of the V-shaped notch at the leading end of said needle when said needle is retracted into said sheath, whereby said inclined guide surface of the leading end of said sheath and said inclined surface of said V-shaped notch at the leading end of said needle form an enlarged guide portion for the hair root to be retained by said appliance and cooperate to control the positioning of the hair root in said appliance; and means to reciprocate said needle axially to cause the leading end of said needle to protrude from the leading end of said sheath; wherein said needle has an exterior diameter of 0.2-0.25 mm; and wherein the leading open end of said sheath is formed into a V-shaped notch.
Claim 2
Dependent Claim
306 words
A hair implanting appliance comprising: means to penetrate the scalp comprising a needle having its leading end formed with a generally V-shaped notch formed by a pair of surfaces at least one of which is inclined and at least one of which extends from the tip of said needle, said V-shaped notch being sized and shaped to retain the root of an artificial hair to be implanted; means to guide said needle without penetrating the scalp comprising a sheath formed with a through hole which has substantially the same inside diameter as the outside diameter of said needle, said sheath having a scalp abutting leading end and at least one inclined guide surface extending rearwardly from said scalp abutting end, said needle being slidably received in said sheath (i) such that the leading end of said needle can protrude from said scalp abutting leading end of said sheath and project into a human skin to a depth necessary for the hair implantation and (ii) such that said inclined guide surface of said sheath merges with and forms a continuation of said inclined surface of the V-shaped notch at the leading end of said needle when said needle is retracted into said sheath, whereby said inclined guide surface of the leading end of said sheath and said inclined surface of said V-shaped notch at the leading end of said needle form an enlarged guide portion for the hair root to be retained by said appliance and cooperate to control the positioning of the hair root in said appliance; and means to reciprocate said needle axially to cause the leading end of said needle to protrude from the leading end of said sheath; wherein said needle has an exterior diameter of 0.2-0.25 mm; and wherein the leading open end of said sheath is formed into a V-shaped notch.
Claim 3
Dependent Claim
322 words
A hair implanting appliance comprising: means to penetrate the scalp comprising a needle having its leading end formed with a generally V-shaped notch formed by a pair of surfaces at least one of which is inclined and at least one of which extends from the tip of said needle, said V-shaped notch being sized and shaped to retain the root of an artificial hair to be implanted; means to guide said needle without penetrating the scalp comprising a sheath formed with a through hole which has substantially the same inside diameter as the outside diameter of said needle, said sheath having a scalp abutting leading end and at least one inclined guide surface extending rearwardly from said scalp abutting end, said needle being slidably received in said sheath (i) such that the leading end of said needle can protrude from said scalp abutting leading end of said sheath and project into a human skin to a depth necessary for the hair implantation and such that said inclined guide surface of said sheath merges with and forms a continuation of said inclined surface of the V-shaped notch at the leading end of said needle when said needle is retracted into said sheath, whereby said inclined guide surface of the leading end of said sheath and said inclined surface of said V-shaped notch at the leading end of said needle form an enlarged guide portion for the hair root to be retained by said appliance and cooperate to control the positioning of the hair root in said appliance; and means to reciprocate said needle axially to cause the leading end of said needle to protrude from the leading end of said sheath; wherein said needle has an exterior diameter of 0.2-0.25 mm; and wherein the leading open end of said sheath has only its one semicircumference cut both at an inwardly inclined plane and at a plane containing the center axis of said sheath.
Claim 4
Dependent Claim
322 words
A hair implanting appliance comprising: means to penetrate the scalp comprising a needle having its leading end formed with a generally V-shaped notch formed by a pair of surfaces at least one of which is inclined and at least one of which extends from the tip of said needle, said V-shaped notch being sized and shaped to retain the root of an artificial hair to be implanted; means to guide said needle without penetrating the scalp comprising a sheath formed with a through hole which has substantially the same inside diameter as the outside diameter of said needle, said sheath having a scalp abutting leading end and at least one inclined guide surface extending rearwardly from said scalp abutting end, said needle being slidably received in said sheath (i) such that the leading end of said needle can protrude from said scalp abutting leading end of said sheath and project into a human skin to a depth necessary for the hair implantation and such that said inclined guide surface of said sheath merges with and forms a continuation of said inclined surface of the V-shaped notch at the leading end of said needle when said needle is retracted into said sheath, whereby said inclined guide surface of the leading end of said sheath and said inclined surface of said V-shaped notch at the leading end of said needle form an enlarged guide portion for the hair root to be retained by said appliance and cooperate to control the positioning of the hair root in said appliance; and means to reciprocate said needle axially to cause the leading end of said needle to protrude from the leading end of said sheath; wherein said needle has an exterior diameter of 0.2-0.25 mm; and wherein the leading open end of said sheath has only its one semicircumference cut both at an inwardly inclined plane and at a plane containing the center axis of said sheath.
Claim 5
Dependent Claim
311 words
A hair implanting appliance comprising: means to penetrate the scalp comprising a needle having its leading end formed with a generally V-shaped notch formed by a pair of surfaces at least one of which is inclined and at least one of which extends from the tip of said needle, said V-shaped notch being sized and shaped to retain the root of an artificial hair to be implanted; means to guide said needle without penetrating the scalp comprising a sheath formed with a through hole which has substantially the same inside diameter as the outside diameter of said needle, said sheath having a scalp abutting leadin end and at least one inclined guide surface extending rearwardly from said scalp abutting end, said needle being slidably received in said sheath (i) such that the leading end of said needle can protrude from said scalp abutting leading end of said sheath and project into a human skin to a depth necessary for the hair implantation and (ii) such that said inclined guide surface of said sheath merges with and forms a continuation of said inclined surface of the V-shaped notch at the leading end of said needle when said needle is retracted into said sheath, whereby said inclined guide surface of the leading end of said sheath and said inclined surface of said V-shaped notch at the leading end of said needle form an enlarged guide portion for the hair root to be retained by said appliance and cooperate to control the positioning of the hair root in said appliance; and means to reciprocate said needle axially to cause the leading end of said needle to protrude from the leading end of said sheath; and wherein the angle of inclination of said inclined guide surface of said sheath is the same as the angle of inclination of said inclined surface of said V-shaped notch.
Claim 6
Dependent Claim
311 words
A hair implanting appliance comprising: means to penetrate the scalp comprising a needle having its leading end formed with a generally V-shaped notch formed by a pair of surfaces at least one of which is inclined and at least one of which extends from the tip of said needle, said V-shaped notch being sized and shaped to retain the root of an artificial hair to be implanted; means to guide said needle without penetrating the scalp comprising a sheath formed with a through hole which has substantially the same inside diameter as the outside diameter of said needle, said sheath having a scalp abutting leadin end and at least one inclined guide surface extending rearwardly from said scalp abutting end, said needle being slidably received in said sheath (i) such that the leading end of said needle can protrude from said scalp abutting leading end of said sheath and project into a human skin to a depth necessary for the hair implantation and (ii) such that said inclined guide surface of said sheath merges with and forms a continuation of said inclined surface of the V-shaped notch at the leading end of said needle when said needle is retracted into said sheath, whereby said inclined guide surface of the leading end of said sheath and said inclined surface of said V-shaped notch at the leading end of said needle form an enlarged guide portion for the hair root to be retained by said appliance and cooperate to control the positioning of the hair root in said appliance; and means to reciprocate said needle axially to cause the leading end of said needle to protrude from the leading end of said sheath; and wherein the angle of inclination of said inclined guide surface of said sheath is the same as the angle of inclination of said inclined surface of said V-shaped notch.
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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) | 1986-03-28 | 1986-09-27 | 1987-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-28 | 1990-09-27 | 1991-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-28 | 1994-09-27 | 1995-03-29 | $7700.00 | Window Closed / Lapsed |