Device for transplanting small diameter hair grafts

• US 5,827,297 A
• Filed: 03/21/1995
• Issued: 10/27/1998
• Est. Priority Date: 10/01/1992
• Status: Expired due to Term

• Current Assignee: Medicamat S.A.
• Original Assignee: Medicamat S.A.
• Inventors: Boudjema, Pascal J.
• Primary Examiner(s): Apley, Richard J.
• Assistant Examiner(s): YU, JUSTINE ROMANG
• Application Number:
  US08/403,929
• Time in Patent Office: 1,316 Days
• Field of Search: 606/187, 606/133, 606/131, 606/36, 606/42, 606/180, 606/184, 604/22, 600/564, 600/565, 600/566, 600/568, 600/570, 600/571
• US Class Current: 606/133
• CPC Class Codes: A61B 10/0283 with vacuum aspiration, e.g. caused by retractable plunger or by connected syringe A61B10/025, A61B10/0266 take precedence
• CPC Class Codes: A61B 17/3417 Details of tips or shafts, e.g. grooves, expandable, bendable; Multiple coaxial sliding cannulas, e.g. for dilating syringe needles A61M5/32; dilators A61M29/00
• 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 2017/00544 pneumatically
• CPC Class Codes: A61B 2017/00752 Hair removal or transplantation
• CPC Class Codes: A61F 2/10 Hair or skin implants

Abstract

A device for transplanting small diameter hair grafts using a hand-held cutting instrument having a body holding the tool, a rotary cylindrical tool and a drive assembly capable of driving the tool in rotation with respect to the body. The tool has a hollow end for cutting a graft. The cylindrical tool is a hollow needle with an axial through bore of the same diameter as the hollow cutting end to which it forms an extension. The device extracts the graft by sucking it up through the axial bore of the needle.

Claims

1. A device for transplanting small-diameter hair grafts, comprising:

a hand-held cutting instrument, the instrument comprising;

a tool-holding body,

a rotary cylindrical tool comprising a hollow needle having an axial bore extending therethrough, said tool having an opening at an end concentric with the axial bore for cutting out a graft, the opening having a diameter substantially equal to a diameter of the axial bore of the needle,

a motor assembly suitable for driving said tool in rotation with respect to said body, and

means for extracting the graft by sucking up said graft through the axial bore of the needle, said extraction means comprising a container for intermediate storage of the extracted graft and a collector hose for passing the extracted graft from the axial bore of the needle to said container.

2. The device of claim 1 wherein said extraction means comprises means for connecting said collector hose in a sealed manner to a rear end of the needle, and wherein said extraction means further comprises means for creating a vacuum in the axial bore of the needle and in the collector hose.

3. The device of claim 2 wherein said connection means comprises a conduit having an internal bore with a diameter at one end substantially equal to an inside diameter of the collector hose, said conduit being connected at said one end to one side of the hose, and rotationally interacting at another end with the needle in the sealed manner.

4. The device as in claim 1, 2, or 3 wherein said needle is removably mounted with respect to the body.

5. A device for transplanting small-diameter hair grafts, comprising;

a hand-held cutting instrument, the instrument comprising,

a tool-holding body,

a rotary cylindrical tool comprising a first hollow needle having a first axial bore extending therethrough, said tool having an opening at an end concentric with the first axial bore for cutting out a graft, the opening having a diameter substantially equal to a diameter of the first axial bore, and

a motor assembly suitable for driving said tool in rotation with respect to said body;

means for extracting the graft from the first axial bore;

a hand-held apparatus for implanting the extracted graft, said apparatus comprising,

a second body,

a second hollow needle extending from said second body and having a second axial bore extending therethrough for reimplantation, said second axial bore having a diameter substantially equal to the diameter of the first axial bore,

a container for intermediate storage of the extracted graft, and

means for inserting the extracted graft intermediately stored in the container into a scalp via said second hollow needle; and

a collector hose for passing the extracted graft from the first axial bore to said container.

6. The device of claim 5 wherein the container comprises a first channel axially connected to the second hollow needle.

7. The device of claim 6 wherein the first channel is cylindrical and has a diameter substantially equal to an inside diameter of the hose, the first channel being obliquely connected to the hose.

8. The device of claim 7 wherein the inserting means comprises a first piston for pushing said graft through the second axial bore of the second needle.

9. The device of claim 8 wherein the hand-held apparatus further comprises means for butting up against the scalp, said butting means being adapted to withdraw the second needle after insertion of the graft in the scalp and comprising a second channel substantially parallel to the first channel, and a second piston for bearing on the scalp, the second piston being integral with the first piston.

10. The device of claim 7 wherein the oblique connection between the hose and a portion of the second hollow needle extending from the body is substantially between 10°

and 60°

.

11. The device of claim 5 wherein the insertion means is pneumatic.

12. The device of claim 5 wherein the insertion means is manual.

13. The device of claim 5 wherein the hand-held apparatus further comprises means for butting up against the scalp, said butting means being adapted to withdraw the second needle after insertion of the graft in the scalp.