Methods of harvesting and implanting follicular units using a coaxial tool
US7621934B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2006 |
| Grant date | Nov 24, 2009 |
| Priority date | — |
| Expiry date | Mar 28, 2028 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/065
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method of transplanting a hair follicular units includes aligning a longitudinal axis of a harvesting cannula of a tool assembly with a longitudinal axis of a selected follicular unit, advancing the harvesting cannula relative to the body surface so that a tissue coring distal end of the harvesting cannula penetrates the body surface surrounding the selected follicular unit to a depth sufficient to substantially encapsulate the follicular unit, withdrawing the harvesting cannula distal end from the body surface with the follicular unit retained in an interior lumen of the harvesting cannula, advancing an implanting cannula of the tool assembly over the harvesting cannula relative to the body surface so that a tissue piercing distal end of the implanting cannula punctures the body surface and forms an implantation cavity therein, and displacing the follicular unit from the harvesting cannula lumen into the implantation cavity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.