Artificial hair implanting method

• US 4,004,592 A
• Filed: 05/28/1975
• Issued: 01/25/1977
• Est. Priority Date: 02/06/1974
• Status: Expired due to Term

• Current Assignee: Shiro Yamada
• Original Assignee: Shiro Yamada
• Inventors: Yamada, Shiro
• Primary Examiner(s): Pace, Channing L.
• Application Number:
  US05/581,961
• Time in Patent Office: 608 Days
• Field of Search: 3/1, 128/330
• US Class Current: 606/187
• CPC Class Codes: A61F 2/10 Hair or skin implants
• CPC Class Codes: Y10T 428/2913 Rod, strand, filament or fiber
• CPC Class Codes: Y10T 428/2976 Longitudinally varying
• CPC Class Codes: Y10T 428/298 Physical dimension

Abstract

A method of implanting artificial hairs in human tissue is disclosed. An artificial hair has a root at one end which is set under the epidermis with a needle means. The needle means has its point shaped for holding an artificial hair at the neck of the root. The root is thrust into an upper region of the hypodermal layer with the needle means. Withdrawing the needle means leaves the root in position, with its tip end turned back, thus permitting the hair to be firmly implanted.

Claims

1. A method of implanting an artificial hair into human tissue, comprising:

providing an implanting needle means having a point,

providing an artificial hair having a trunk portion of relatively great length and at one end an integral enlarged and elongated root having a tip end, said trunk portion integrally joining said root at a flexible neck,

grasping the neck of the root of said artificial hair with the point of said needle means and causing the root to fold back against said trunk,

thrusting said root into the epidermis with said needle until said root reaches the hypodermal tissue, the tip end of said root trailing said neck as said root passes into the tissue, and

withdrawing said needle whereby said root remains in the upper region of the hypodermal layer, with its tip end turned back an with said elongated root lying against the trunk portion extending from said neck, said hair being firmly fixed in position.

2. A method of implanting artificial hairs in human tissue in accordance with claim 1 wherein said needle means comprises a pipe through which said artificial hair is extended until its tip end comes out of the needle point to a small length, the protruded part being thermally melted to form a said root.

3. A method of implanting artificial hairs in human tissue in accordance with claim 1 wherein said needle means has a fork point for holding the neck of the root of said artificial hair.

4. A method of implanting artificial hairs in human tissue in accordance with claim 1 wherein said needle means comprises a pair of pincers having grooves longitudinally on the mutually facing sides of its nose portions, said artificial hair being held in the sheath formed between said grooves when joined.

5. A method of implanting artificial hairs in human tissue in accordance with claim 1 wherein said needle means has a circular cross-section, with the point end provided with a hollow cavity, the root of said artificial hair being fitted in said hollow and thrusted into the epidermis with said needle.

6. A method of implanting artificial hairs in human tissue in accordance with claim 1 wherein said needle means has longitudinally a through-hole permitting the trunk of said artificial hair to pass but not permitting the root to pass.

7. A method of implanting artificial hairs in human tissue in accordance with claim 1 wherein said needle means has a circular cross-section, with its point portion shaped like a fork having concave surfaces on both sides.