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RO Each instrument governs one variable, and only one. A procedure is a sequence of separate decisions — how the follicle is freed, how it is held, where the site is cut, how the graft enters it — and there is a different tool behind each. Naming a brand describes none of them.
| Stage | Instrument | Variable it controls |
|---|---|---|
| Extraction | Punch, hand-held or motorised | Diameter, tip geometry, transection |
| Bench | Magnification and fine forceps | Trimming, sorting, graft integrity |
| Site creation | Blades, needles or crystal-tipped blades | Angle, direction, depth, site width |
| Placement | Implanter pens or placing forceps | How the graft enters and how it is held |
Instruments are sized to the graft, not chosen as a package. A site cut wider than the graft leaves it loose; a punch larger than the follicular unit removes more skin than necessary. Matching happens per patient, because follicular units differ in size between people and across the same donor area.
Sterility is the one non-negotiable. Everything that enters tissue is single-use or fully sterilised between patients. This is the part of the instrument list that never appears in advertising and is the only part with no acceptable variation.
They are inputs, not outcomes. The same set produces very different results in different hands. Instruments set what is possible; technique decides what happens.
Related terms
For the extraction stage in full, see the FUE technique. For placement with an implanter pen, see the DHI technique.
