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General product information only, not medical advice and not a procedure guide. Positioning decisions for a patient belong to the clinical team and the manufacturer’s instructions for use.
Short answer
A head positioner is a medical support that holds a patient’s head in a set position during a procedure. In US federal regulation the closest defined device is the “neurosurgical headrest,” a Class I device used to support the head during surgery (21 CFR 882.4440). Product names such as head block, head immobilizer and head holder overlap, but they do not all describe the same level of restraint.
Definition and scope
“Head positioner” has more than one meaning. In electronics and test equipment it can mean a mechanism that moves a read/write head; this page covers only the medical device used to support or hold a patient’s head.
The regulation text uses a narrower name. Under 21 CFR 882.4440 (checked 2026-10-30), “a neurosurgical headrest is a device used to support the patient’s head during a surgical procedure.” The same section classifies it as Class I (general controls) and exempts it from premarket notification, subject to the limitations in 882.9. The terms “head positioner,” “head block” and “head immobilizer” do not appear in that regulation text, so they are trade and clinical usage rather than regulatory categories.
How it is used in practice
Manufacturer documents show two distinct jobs, and the difference is the most useful thing to understand when comparing products.
Supporting and stabilizing the head
STERIS describes its Boost Head Positioner as designed to help stabilize a patient’s head during ERCP (endoscopic retrograde cholangiopancreatography), cradling the head to enable easy access to the mouth (STERIS product page, checked 2026-10-30). The page lists it as latex-free, 9.5 cm high by 19 cm wide by 23 cm long, supplied in a box of 5.
Fixing the skull
A different class of product holds the skull itself. The summary for FDA 510(k) K071179, the Noras OR Head Holder, describes the fixation of the human skull just before, during and at the end of the intervention. It states that the device enables prone, supine and lateral patient positioning, can be adjusted from adult use down to use for a newborn child, and is for prescription use (FDA 510(k) summary K071179, as republished by Innolitics, checked 2026-10-30).
Types and related concepts
The table compares the regulation and the two products described above.
| Item | What the source says it does | Regulatory or listing detail in the source |
|---|---|---|
| Neurosurgical headrest (21 CFR 882.4440) | Supports the patient’s head during a surgical procedure | Class I (general controls); exempt from premarket notification, subject to 882.9 |
| STERIS Boost Head Positioner | Helps stabilize the head during ERCP; cradles the head for access to the mouth | Latex-free; 9.5 x 19 x 23 cm; box of 5 |
| Noras OR Head Holder (K071179) | Fixation of the skull; prone, supine and lateral positioning; adult down to newborn | 510(k) number K071179; prescription use |
Related pages on CASRAI cover neighbouring supports: the bite block, the Hana table, the Philly cervical collar and the knee immobilizer.
Where it matters for labs, clinics and supply decisions
A short set of questions separates one head-positioning product from another.
- Named procedure. The Boost page names ERCP; the K071179 summary describes an intervention with the skull fixed. A product page that names no procedure gives no basis for matching it to one.
- Support versus fixation. “Support” (the 882.4440 wording) and “fixation of the skull” (K071179) are different functions with different regulatory records.
- Latex status. The Boost page states latex-free; compare against the latex statement on any alternative.
- Dimensions and pack quantity. The Boost page gives dimensions and a box of 5, which a stock list or storage plan needs.
- Intended user. K071179 is for prescription use, which signals a clinician-directed device rather than a general-purpose accessory.
For a broader view of what a clinic stocks, see the sports medicine clinic supply checklist.
Common misunderstandings
- “Head block, head immobilizer and head positioner are one thing.” They are used loosely. The regulation text defines a headrest as support; the K071179 summary describes skull fixation.
- “Class I means no oversight.” Class I here means general controls, and 882.4440 exempts the device from premarket notification subject to the limitations in 882.9. It is still a regulated device type.
- “A wheelchair headrest is the same product.” Seating headrests are a separate topic; see wheelchair headrests.
- “Search results for head positioner are all medical.” Many technical results refer to electronic mechanisms that move a head, not to patient care.
FAQ
What is a head positioner used for?
It supports or stabilizes a patient’s head during a procedure. One manufacturer describes its model as helping stabilize the head during ERCP while giving access to the mouth.
Is a head block the same as a head positioner?
The terms are used for similar supports, but the regulation text defines only the neurosurgical headrest, so there is no single regulatory definition of “head block.”
Is a head immobilizer a head holder?
Not necessarily. A head holder such as the one in K071179 is described as fixing the skull, which is a stronger function than cradling or supporting the head.
How does the FDA classify a neurosurgical headrest?
As Class I (general controls), exempt from premarket notification subject to the limitations in 21 CFR 882.9, per 21 CFR 882.4440.
Sources
- eCFR, 21 CFR 882.4440 Neurosurgical headrests: https://www.ecfr.gov/current/title-21/chapter-I/subchapter-H/part-882/subpart-E/section-882.4440 (checked 2026-10-30).
- STERIS, Boost Head Positioner product page: https://steris.com/healthcare/products/endoscopy-devices/endoscopic-retrograde-cholangiopancreatography/boost-head-positioner (checked 2026-10-30).
- FDA 510(k) K071179, Noras OR Head Holder summary (as republished by Innolitics): https://fda.innolitics.com/submissions/RA/subpart-b%E2%80%94diagnostic-devices/MOS/K071179 (checked 2026-10-30).
