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Short answer. A Kerrison rongeur is a hand-held surgical instrument with a movable jaw that closes against a fixed footplate to bite away bone, cartilage and soft tissue; a patent describes Kerrison-type rongeurs as used in spinal surgery. In the United States, the class depends on the regulation and product code a labeler uses: 21 CFR 882.4840 defines a manual rongeur for the skull or spinal column (Class II), but the Kerrison listed in the federal AccessGUDID record for a Kerrison Universal Rotating Rongeur carries FDA product code HTX, which maps to 21 CFR 888.4540 (orthopedic manual instruments), device class 1 (general controls). That same record shows the instrument as reusable, supplied non-sterile and needing sterilization before use.
This page gives general product and regulatory information for laboratory, clinic and supply staff. It is not medical advice and does not describe how any surgical procedure is performed.
Definition and scope
The U.S. Code of Federal Regulations defines a manual rongeur as “a manually operated instrument used for cutting or biting bone during surgery” involving the skull or spinal column (21 CFR 882.4840(a)). The same section assigns manual rongeurs of that kind to Class II, the performance-standards class (21 CFR 882.4840(b)). That is one regulation; the Kerrison in that AccessGUDID record is filed under a different one (see the table below).
“Kerrison” names a design within the rongeur family rather than a separate regulatory category. US Patent 8,864,766 B2 (granted 2014-10-21), titled “Kerrison rongeurs”, states that Kerrison-type rongeurs are used during spinal surgery to remove bone, cartilage and soft tissue. This page covers what the instrument is and how it is described in official records; it does not cover technique.
How it is used in practice
The patent describes the working parts in general terms. Kerrison-type rongeurs typically have a moveable jaw that closes against a stationary anvil or foot plate, and the user squeezes the handle to advance the jaw to the foot plate. One commercial listing in the NLM AccessGUDID database also names a shaft lock and a tissue ejector pin as features of that particular model. These are descriptions of the tool’s mechanism as published by the patent and the labeler, not instructions.
Types and related concepts: how the same instrument is labeled
Three official records describe rongeurs, and they do not use identical language. Comparing them is the most practical way to read a Kerrison listing.
| Record | What it says | Source |
|---|---|---|
| Federal regulation | Manual rongeur: cuts or bites bone during surgery involving the skull or spinal column; Class II | 21 CFR 882.4840 (eCFR, checked 2026-10-30) |
| GMDN term in a GUDID entry | “Orthopaedic joint/limb rongeur” (GMDN code 32853): a hand-held manual surgical instrument designed to remove bone during an orthopaedic intervention of the limbs or joints | AccessGUDID entry for a Kerrison Universal Rotating Rongeur (checked 2026-10-30) |
| FDA product code in the same entry | HTX (Rongeur): regulation 21 CFR 888.4540, device class 1 (general controls), review panel OR (orthopedic) | AccessGUDID entry plus the FDA classification record for HTX (checked 2026-10-30) |
| Federal list of orthopedic manual instruments | Rongeur appears among the instrument names in 21 CFR 888.4540, which is Class I | eCFR (checked 2026-10-30); see also the CASRAI guide on orthopedic surgical instruments |
21 CFR 882.4840 (skull and spine, Class II) and 21 CFR 888.4540 (orthopedic, Class I) are different regulations, and the class of a given product depends on the product code its labeler uses. For the Kerrison in that AccessGUDID record, that code is HTX, Class I. The regulation speaks of skull and spinal use, while the GMDN term in that entry speaks of limbs and joints. Labelers choose their own GMDN term, so labeling for Kerrison rongeurs varies between manufacturers.
Where it matters for labs, clinics and supply decisions
For staff who handle or catalog instruments, the useful information is in the device record and the manufacturer’s instructions for use (IFU). The AccessGUDID entry for the Kerrison Universal Rotating Rongeur shows these fields for that model:
- Reuse: single-use is “No”, so the device is reusable.
- Sterility on delivery: not packaged sterile; sterilization is required before use.
- Listed sterilization methods: dry heat and moist heat (steam).
- MRI safety: the labeling contains no MRI safety information.
These values belong to one labeler’s entry. Another model or manufacturer may differ, so the record for the exact item, and its IFU, is the reference. For background on steam sterilizers, see What Is an Autoclave? For the specialty context of the instrument, see What Is Orthopedics?
Common misunderstandings
“A Kerrison is only a spine instrument.”
The patent and the federal regulation both point to spinal use, but one GUDID entry uses a limb and joint GMDN term. Labeling differs by labeler, so no single anatomical label should be assumed for every Kerrison.
“If it is a rongeur, it is covered by one regulation and one class.”
Rongeurs are named in more than one place in the federal regulations: 21 CFR 882.4840 (manual rongeur for skull or spine, Class II) and the instrument list in 21 CFR 888.4540 (orthopedic, Class I). The Kerrison in the AccessGUDID record for the Kerrison Universal Rotating Rongeur has product code HTX, which maps to 888.4540, Class I, not to 882.4840. A product’s own record shows the product code and terms its labeler selected.
“Surgical instruments arrive ready to use.”
Not in this AccessGUDID entry: it is listed as not packaged sterile and as requiring sterilization before use.
FAQ
What is a Kerrison rongeur?
A hand-held surgical instrument with a movable jaw that closes against a stationary footplate, described in a US patent as used in spinal surgery to remove bone, cartilage and soft tissue.
Is a Kerrison rongeur reusable?
The AccessGUDID entry for one Kerrison Universal Rotating Rongeur lists it as not single-use. Check the IFU for any other model.
How does the FDA classify manual rongeurs and Kerrison rongeurs?
It depends on the regulation and product code. 21 CFR 882.4840(b) classifies the manual rongeur for skull or spinal use as Class II (performance standards). The Kerrison in the AccessGUDID record for the Kerrison Universal Rotating Rongeur has product code HTX, which maps to 21 CFR 888.4540, device class 1 (general controls). Check the product code in the record for the exact item.
Where can I look up a specific instrument’s labeling data?
In the NLM AccessGUDID database, which shows the labeler’s device description, product code, single-use status and sterilization fields for each listed device.
Sources
- eCFR, 21 CFR 882.4840 Manual rongeur: ecfr.gov (checked 2026-10-30).
- NLM AccessGUDID, Kerrison Universal Rotating Rongeur entry (device identifier 00192896034334): accessgudid.nlm.nih.gov (checked 2026-10-30).
- US Patent 8,864,766 B2, “Kerrison rongeurs”, granted 2014-10-21: patents.google.com (checked 2026-10-30).
- eCFR, 21 CFR 888.4540 Orthopedic manual surgical instrument: ecfr.gov (checked 2026-10-30).
- FDA openFDA device classification record, product code HTX (Rongeur; regulation 888.4540, class 1, panel OR): api.fda.gov (checked 2026-10-30).
