Hair implantation device

• US 5,989,279 A
• Filed: 12/10/1997
• Issued: 11/23/1999
• Est. Priority Date: 04/10/1996
• Status: Expired due to Term

• Current Assignee: William R. Rassman
• Original Assignee: William R. Rassman
• Inventors: Rassman, William R.
• Primary Examiner(s): Buiz, Michael
• Assistant Examiner(s): Shai, Daphna
• Application Number:
  US08/987,448
• Time in Patent Office: 713 Days
• Field of Search: 606/132, 606/133, 606/187, 606/185, 623/15
• US Class Current: 606/187
• CPC Class Codes: A61B 17/32093 for skin incisions
• CPC Class Codes: A61B 17/3213 with detachable blades
• CPC Class Codes: A61B 17/322 Skin grafting apparatus
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61B 2017/00752 Hair removal or transplantation
• CPC Class Codes: A61B 2017/00969 used for transplantation
• CPC Class Codes: A61F 2/10 Hair or skin implants

Abstract

A system for transplanting hair grafts from a donor region of a patient'"'"'s scalp to a recipient region of the patient'"'"'s scalp. The system includes harvesting N (N≧21) strips of skin containing living hair follicles from the donor region of the patient'"'"'s scalp, the N strips of skin being harvested simultaneously, and cutting the N strips of skin into hair grafts, the N strips of skin being cut simultaneously. The system also includes loading the hair grafts sequentially, bottom down, into a removable cartridge connected to an instrument for implanting the hair grafts into the recipient region of the patient'"'"'s scalp, the hair grafts being loaded so as to create an air seal between the hair grafts and the cartridge, and implanting the hair grafts. The implanting includes implanting the hair grafts into the recipient region of the patient'"'"'s scalp, one at a time, using the instrument, by (1) feeding a hair graft to a predetermined feed position in the instrument via air suction created by an air seal between the hair graft and the cartridge, (2) making an incision at a point in the recipient region of the patient'"'"'s scalp at which the hair graft is to be implanted using a cutting device on the instrument, and (3) sliding the hair graft into the incision using an implanting member in the instrument.

Claims

1. An instrument for implanting hair grafts into a patient'"'"'s scalp, said instrument comprising:

a housing having an implanting end and adapted to be manipulated by a surgeon during implantation of hair grafts, said housing having a bore extending at least part way thereinto from the implanting end;

a cutting device at the implanting end of said housing for making an incision into the patient'"'"'s scalp, into which a hair graft is to be implanted;

a feeding station adjacent the bore and spaced away from the implanting end of said housing, the feeding station including a receiving assembly to receive a cartridge which stores plural hair grafts; and

an implanting member slidably movable in the bore between at least said feeding station and the implanting end, said implanting member being constructed (1) to receive a hair graft at the feeding station, and (2) to slide the hair graft down said cutting device into the incision made in the patient'"'"'s scalp by said cutting device, said implanting member including a forwardly extending finger that laterally cushions said hair graft during implantation.

2. An instrument according to claim 1, further comprising a holding member adjacent said implanting member, said holding member defining a shoulder against which the hair graft rests during implantation.

3. An instrument according to claim 2, wherein said finger extends forwardly past the shoulder toward the implanting end.

4. An instrument according to claim 2, wherein said holding member is slidably movable independently of said implanting member.

5. An instrument according to claim 4, wherein during implantation said implanting member is slidably withdrawn from the incision while said holding member remains in contact with the hair graft.

6. An instrument according to claim 5, further comprising a latch connected to said implanting member which triggers withdrawal of said implanting member from the incision while said holding member remains in contact with the hair graft in the incision.

7. An instrument according to claim 5, wherein said holding member includes an expandable tip at an area which contacts the hair graft.

8. An instrument according to claim 2, wherein the holding member and the implanting member are not independently movable.

9. An instrument according to claim 8, wherein said holding member and said implanting member extend beyond said cutting device into the incision during withdrawal of the cutting device from the incision.

10. An instrument according to claim 9, wherein said cutting device includes a hollow portion through which said implanting member and said holding member are slidably extendable.

11. An instrument according to claim 10, wherein said cutting device includes a cylindrical tip portion past which said implanting member and said holding member slide during implantation of a hair graft.

12. An instrument according to claim 8, further comprising a plunger to actuate both said holding member and said implanting member for implantation of the hair graft.

13. An instrument according to claim 1, wherein the receiving assembly is angled relative to the bore so as to receive the cartridge at an angle oblique to the bore.

14. An instrument according to claim 3, further comprising a plunger to actuate the implanting member so as to cause implantation of a hair graft, and wherein actuation of said plunger causes said cartridge to advance a next sequential hair graft for implantation.

15. An instrument according to claim 1, wherein lateral cushioning of said hair graft by said finger comprises sandwiching of said hair graft between said finger and said cutting device.