Laser assisted hair transplant method

• US 5,360,447 A
• Filed: 02/03/1993
• Issued: 11/01/1994
• Est. Priority Date: 02/03/1993
• Status: Expired due to Term

• Current Assignee: ESC Medical Systems, Inc.
• Original Assignee: Coherent Inc (Coherent Corp.)
• Inventors: Koop, Dale E.
• Primary Examiner(s): Green, Randall L.
• Assistant Examiner(s): JONES, MARYBETH O
• Application Number:
  US08/012,895
• Time in Patent Office: 636 Days
• Field of Search: 623/15, 606/9, 606/170, 606/187, 607/89, 132/53, 132/56, 132/201
• US Class Current: 128/898
• CPC Class Codes: A61B 18/201 with beam delivery through a hollow tube, e.g. forming an articulated arm through a flexible conduit A61B18/22; Hand-pieces therefor
• CPC Class Codes: A61B 2017/00154 pulsed
• CPC Class Codes: A61B 2017/00747 Dermatology
• CPC Class Codes: A61B 2017/00969 used for transplantation
• CPC Class Codes: A61F 2/10 Hair or skin implants

Abstract

A hair transplant procedure is described which includes preparing a plurality of hair plugs from a donor site on the scalp. A corresponding number of incisions are drilled into the hairless recipient site using a pulsed laser beam. Preferably, the beam is generated from a high power, RF excited, carbon dioxide, slab waveguide laser. The pulse characteristics of the laser are chosen to ablate the tissue to the desired depth while minimizing bleeding. The plugs are inserted into the incision and hair growth in the recipient region is promoted.

Claims

1. A method of implanting a hair graft into the scalp of a patient comprising the steps of:

incising a region of scalp tissue using a laser beam; and

inserting the hair graft into the incised region.

2. A method of implanting a hair graft into the scalp of a patient comprising the steps of:

drilling a hole in the scalp tissue with a pulsed, carbon dioxide laser beam, with the energy density being selected to ablate tissue and reduce bleeding; and

inserting the hair graft into the hole.

3. A method of implanting a hair graft into the scalp of a patient comprising the steps of:

generating a pulsed laser beam;

delivering the beam to a spot on the scalp of the patient, with the spot size, pulse length and power of the beam being selected to incise the tissue and coagulate blood vessels; and

inserting the hair graft into the incision.

4. A method as recited in claim 3 wherein said incision is a circular hole.

5. A method as recited in claim 3 wherein said incision is a slit.

6. A method as recited in claim 5 wherein said slit is 1 to 2 mm wide.

7. A method as recited in claim 3 wherein the incision is formed at an angle which is offset from a perpendicular with respect to the scalp surface.

8. A method as recited in claim 3 wherein the pulses in said laser beam have an energy of at least 100 millijoules and a length of between 0.1 and 1.0 milliseconds.

9. A method of transplanting hair from a donor area on the scalp of a patient to a hairless recipient area on the scalp of the patient comprising the steps of:

removing a strip of skin having hair from the donor area;

dividing the strip into a plurality of plugs each containing one or more hairs;

drilling a plurality of holes in the recipient area, said holes being drilled using a pulsed, carbon dioxide laser having pulse characteristics selected to ablate tissue while minimizing bleeding; and

inserting a plug into each hole.

10. A method as recited in claim 9 wherein each of said holes is circular.

11. A method as recited in claim 9 wherein each of said holes is in the form of a slit.

12. A method as recited in claim 11 wherein said slit is 1 to 2 mm wide.

13. A method as recited in claim 9 wherein each hole is formed at an angle which is offset from a perpendicular with respect to the scalp surface.

14. A method as recited in claim 9 wherein each of the laser pulses have an energy of at least 100 millijoules and a length of between 0.1 and 1.0 milliseconds.