All three are hand-held retractors held by an assistant rather than self-retaining, but they solve different depth and access problems: one is built for a focused deep slot, one for very small or delicate incisions, and one is the generalist that covers most shallow-to-mid retraction in between.
Langenbeck: single-ended, built for depth
A Langenbeck retractor has one L-shaped blade at one end and a plain or hollow handle at the other — it is not a double-ended tool. It comes in a genuinely wide range of blade width and depth combinations (roughly 10–25mm wide and 28–65mm deep across common sizes), which is the point: a set typically stocks several Langenbeck sizes rather than one, so the surgeon can pick the blade that matches how deep and how wide the specific slot actually is, rather than using one general-purpose size for every depth.
Senn: the smallest, for the smallest openings
A Senn retractor is double-ended and noticeably smaller than the other two: one end carries a single solid blade, the other a three-pronged rake, giving the assistant a choice of a smooth or a toothed grip on the same instrument. Its scale suits very small incisions, plastic and reconstructive work, and neck dissection — surface and near-surface tissue rather than a deep cavity.
Army-Navy: the generalist
- Double-ended, with a smooth, toothless right-angle blade at each end.
- The two ends are cut to different depths, so a single instrument covers two retraction depths without switching tools.
- Suits shallow-to-mid retraction broadly, from small wounds up through larger abdominal procedures — the default hand-held retractor most kits reach for first.
What to specify in an RFQ
- Pattern: Langenbeck, Senn or Army-Navy — not "retractor" as one generic line
- For Langenbeck, the blade width/depth combinations needed, since one size rarely covers a full set's range
- For Senn, confirm both the solid-blade and rake ends are included
- Steel grade and finish (see our steel-grades guide)
- Confirm hand-held, not self-retaining — a different category covered separately in this hub
Official sources
These sources support the market or regulatory context. Supplier capability still requires product-level verification.
This guide provides general commercial education. Product-specific technical, legal and regulatory requirements should be confirmed for the selected product and destination market.