Written and maintained by CASRAI Editorial Board
Last updated
This page describes products and general use; it is not medical advice.
A Wartenberg pinwheel is a hand-held sensory-testing device: a handle carrying a small rotating wheel with sharp points that is rolled across the skin. In US federal regulation the same device class is called a pinwheel and is a Class I device. This guide is for clinic staff, buyers and students who need to know what the product is, how it is classified and what a manufacturer actually specifies.
What is a Wartenberg pinwheel?
A Wartenberg pinwheel is a pinwheel in the regulatory sense: 21 CFR 882.1750(a) defines a pinwheel as "a device with sharp points on a rotating wheel used for testing pain sensation." One manufacturer, American Diagnostic Corporation (ADC), describes its Wartenberg Neurological Pinwheel as "designed to test nerve sensitivity as it rolls across the skin."
Who uses it: clinicians and trainees who carry out sensory testing, and the staff who stock examination rooms.
How is it regulated?
Under 21 CFR 882.1750(b), a pinwheel is Class I (general controls). The regulation also states the device is exempt from the premarket notification procedures in subpart E of part 807, subject to 21 CFR 882.9. This page does not restate the limitations in 882.9; read that section before relying on the exemption for a specific product. Regulation text checked on the eCFR on 2026-10-30 (current to 2026-10-01).
How is it built?
The manufacturer page for the ADC Wartenberg Neurological Pinwheel (SKU 3695) lists these features. They describe one product, not every pinwheel.
| Feature | ADC SKU 3695 as published |
|---|---|
| Working part | Rotating spur (wheel) |
| Handle | Textured grip |
| Finish and materials | Chrome-plated zinc and brass |
| Overall length | 7 1/2 inches |
| Natural rubber latex | Stated as not made with natural rubber latex |
| Phthalates | Stated as made without phthalates |
| Marking | CE marked |
Source: ADC product page, American Diagnostic Corporation, checked 2026-10-30.
Names and terms: Wartenberg wheel, neuro pinwheel, pinwheel
| Term | Where it appears | What it means here |
|---|---|---|
| Pinwheel | 21 CFR 882.1750 (FDA regulation) | The regulatory device name and definition: sharp points on a rotating wheel used for testing pain sensation. |
| Wartenberg Neurological Pinwheel | ADC product name | A manufacturer’s name for a product that fits the regulatory description of a pinwheel. |
Other sellers use the shorter label "neuro pinwheel" for products in the same class. When comparing listings, match the description and the manufacturer’s documentation rather than the label alone.
How to choose
Checks that the published sources support:
- Device definition: the product should match the 882.1750 description (sharp points on a rotating wheel, for testing pain sensation).
- Latex status: read the manufacturer’s own latex statement for the exact model. ADC states its SKU 3695 is not made with natural rubber latex. For general background on latex products, see what a latex glove is.
- Dimensions and finish: compare the published length and materials of the specific model; the 7 1/2 inch figure above applies to the ADC model only.
- Instructions for use: the manufacturer links an instructions-for-use document with the product. Cleaning, reuse and disposal follow that document for the model you hold.
Safe use and handling basics
Use, cleaning and any reprocessing follow the manufacturer’s instructions for use for the specific model. This page does not give cleaning, sterilization or reuse instructions, and it does not describe how to perform a sensory examination.
Common mistakes
- Assuming one model’s length, materials or latex statement applies to another seller’s "neuro pinwheel."
- Reading a Class I, 510(k)-exempt status as meaning no limits apply; the exemption is stated as subject to 21 CFR 882.9.
- Following a generic cleaning habit instead of the model’s instructions for use.
Frequently asked questions
Is a neuro pinwheel the same thing as a Wartenberg pinwheel?
Both labels are used for products that fit the regulatory description of a pinwheel in 21 CFR 882.1750. Individual models can differ in size, materials and documentation, so check the specific product.
What class of device is a pinwheel?
Class I (general controls), exempt from premarket notification subject to 21 CFR 882.9, per 21 CFR 882.1750(b).
Is the ADC Wartenberg pinwheel latex-free?
ADC states that the product is not made with natural rubber latex.
Related reading
Other examination instruments covered on CASRAI: reflex hammer, tuning fork and stethoscope. For the broader field, see what neurology is; for how device classes feed 510(k) decisions, see predicate devices and substantial equivalence. Supplies for exam rooms are listed under diagnostic, monitoring and imaging supplies.
Sources
- 21 CFR 882.1750, Pinwheel, eCFR: https://www.ecfr.gov/current/title-21/section-882.1750 (checked 2026-10-30).
- American Diagnostic Corporation, Wartenberg Neurological Pinwheel, SKU 3695: https://www.adctoday.com/node/7403 (checked 2026-10-30).
