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This page describes products and general use; it is not medical advice.
On this page
A digital tourniquet (also called a finger tourniquet) is a small nonpneumatic band, ring or roll placed around a finger or toe to temporarily restrict blood flow, usually so that a clinician can work in a bloodless field. Clinic staff, buyers and students use this page to understand what the device is, how it is regulated, and why one rule matters above all others: a digital tourniquet must never be forgotten on the digit.
What a digital (finger) tourniquet is
A digital tourniquet is a tourniquet sized for a finger or toe. The U.S. National Library of Medicine’s AccessGUDID database describes one commercial example, the Tourni-Cot Medium from MAR-MED Inc., as “Exsanguinating digital tourniquets to create a bloodless field for procedures on fingers and toes.” In other words, its purpose is a clear working field for a procedure on a digit, not the control of life-threatening limb bleeding. For limb tourniquets, see what a tourniquet is and tourniquet types.
Who uses it: clinicians performing procedures on fingers and toes, and the staff who stock and dispose of the supplies used in those procedures.
Types and variants
The variants below are the ones documented in the sources listed at the end of this page.
| Type | Description | Key difference | Source |
|---|---|---|---|
| Commercial digital tourniquet (example: Tourni-Cot) | Purpose-made device for creating a bloodless field on fingers and toes | The GUDID record lists it as single-use, with FDA product code GAX (Tourniquet, Nonpneumatic) | NLM AccessGUDID, DI 00855364004047 |
| Glove-finger tourniquet | Made from the finger of a rubber or surgical glove | The UK National Patient Safety Agency reported digital necrosis requiring amputation when these were left in place, and discouraged surgical-glove use | Lim and Cole, Ann R Coll Surg Engl 2011 |
| Glove tourniquet with the rolled-down portion left attached to the glove (Tang and Bebbington) | Variant of the glove tourniquet | Described as highly visible because the rolled-down portion stays attached to the glove | Lim and Cole, Ann R Coll Surg Engl 2011 |
How a digital tourniquet is classified
In the United States, 21 CFR 878.5900 defines a nonpneumatic tourniquet as a device consisting of a strap or tubing intended to be wrapped around a patient’s limb and tightened to reduce circulation. It is Class I (general controls) and exempt from the premarket notification procedures in subpart E of part 807, subject to the limitations in 21 CFR 878.9 (text checked 2026-10-30 in the Cornell Legal Information Institute copy of the CFR). The GUDID record for the Tourni-Cot example uses the FDA product code GAX, Tourniquet, Nonpneumatic. Pneumatic (cuff) tourniquets are a different design, covered in tourniquet types. For the wider regulatory picture, see what a medical device is.
The same record answers “No” both to whether the device is required to be labeled as containing natural rubber latex and to whether it is labeled as made without natural rubber latex. Check the label of the specific product if latex matters; see latex gloves for background.
Safe use and the retained-tourniquet risk
The documented hazard of digital tourniquets is the one that is simple to prevent. Lim and Cole’s letter reports that the UK National Patient Safety Agency (NPSA) recorded digital necrosis requiring subsequent amputation after rubber or surgical glove finger tourniquets were left in situ. The NPSA recommended that digital tourniquets be brightly coloured and have a CE mark, and discouraged the use of surgical gloves for this purpose. The authors note that using a surgical glove as a digital tourniquet must be done with great caution.
- A purpose-made, brightly coloured device is easy to see; an unmarked band is not.
- A design that stays attached to something large and visible (as in the Tang and Bebbington glove method) is described as highly visible.
- The manufacturer’s instructions for use apply to the specific device. The GUDID example is single-use.
Common mistakes
- Using a glove finger or rubber band that is easy to overlook, the pattern behind the retained-tourniquet reports above.
- Treating a digital tourniquet like a limb tourniquet: the purpose, size and regulatory entry differ.
- Reusing a device labelled single-use.
- Assuming a product is latex-free without checking its label.
Frequently asked questions
What is a tourniquet?
A tourniquet is a strap, tubing or band wrapped around a limb or digit to restrict blood flow. FDA’s 21 CFR 878.5900 describes the nonpneumatic type as “a strap or tubing intended to be wrapped around a patient’s limb”. See what is a tourniquet.
What is a pneumatic tourniquet?
A pneumatic tourniquet uses an inflatable cuff, whereas the digital devices on this page are nonpneumatic. Regulation 21 CFR 878.5900 covers the nonpneumatic type. Pneumatic cuffs are discussed in tourniquet types.
What is a tourniquet kit?
There is no standard definition of a digital tourniquet kit in the regulation or the product record cited here. The Tourni-Cot GUDID record lists the product as not a kit, so check the contents list on the specific product’s labelling.
How tight should a tourniquet be?
No regulation or record cited on this page gives a tightness or pressure figure for digital tourniquets, and none should be assumed. The device’s instructions for use and the supervising clinician’s direction apply.
How long can a tourniquet stay on?
No single time limit is given in the sources cited on this page. What they do document is the harm from a tourniquet left on unnoticed, including necrosis and amputation, which is why visibility matters. The device’s instructions for use apply.
Sources
Each source was checked on 2026-10-30.
- U.S. Code of Federal Regulations, 21 CFR 878.5900, Nonpneumatic tourniquet: https://www.law.cornell.edu/cfr/text/21/878.5900
- NLM AccessGUDID, Tourni-Cot Medium, DI 00855364004047: https://accessgudid.nlm.nih.gov/devices/00855364004047
- Lim EH, Cole RP. Fingerless gloves for hand trauma cases. Ann R Coll Surg Engl 2011: https://pmc.ncbi.nlm.nih.gov/articles/PMC3604945
