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This page describes products and general use; it is not medical advice.
A catheter lumen is the hollow channel inside a catheter tube through which fluid passes. Clinic staff, buyers and students usually search the term to work out what “single”, “double” or “3-way” means on a catheter label. This page explains the term, then maps the channels of a urinary (Foley-type) catheter, which is where the “way” count is most often printed, using FDA records and the CDC guideline.
What a catheter lumen is
A lumen is an internal channel of a tubular device. Under US regulation, a urological catheter is “a flexible tubular device that is inserted through the urethra” and “used to pass fluids to or from the urinary tract” (21 CFR 876.5130(a)). The fluid-carrying channel inside that tube is its lumen. The same word is used for central venous catheters, where one tube can hold two or three separate lumens; see double-lumen PICC lines and central venous catheters for that vascular use, which this page does not repeat.
Who uses the term: clinical and materials staff who read product labels, buyers who match a product to an order, and students learning device vocabulary.
Lumens and ports on a Foley catheter
FDA’s device-nomenclature text for a Foley catheter describes “a flexible tube with an inflatable balloon on its distal tip” that is inserted through the urethra and retained in the bladder as an indwelling device for urinary drainage (GMDN term text in an FDA GUDID record, C. R. Bard, Inc., model 1851SI20). Two functions follow from that description, and a third appears on some products:
- Drainage channel: carries urine out of the bladder.
- Balloon channel: a separate, narrow channel that connects the balloon to its inflation port. This is what searchers mean by the “catheter balloon port”: the balloon is filled and held through its own port, not through the drainage channel.
- Irrigation channel (3-way products only): in the Bard records below, the third way is labeled “continuous irrigation”.
What is a 3-way catheter?
A 3-way catheter is a Foley-type urinary catheter whose manufacturer labels it with three ways: drainage, balloon inflation and a third channel for irrigation. In FDA GUDID records, C. R. Bard, Inc. describes such products as “3 Way Continuous Irrigation” catheters (for example Bardex Lubricath models 0132L22, 0119L26 and 01267524). A 2-way catheter is labeled with drainage and balloon only. “2-way” and “3-way” are manufacturer label terms, not a standardized classification, so confirm the way count on the product label.
How the way count is labeled: real examples
These rows come from FDA GUDID records (openFDA, checked 2026-10-30). The descriptions are manufacturer-entered text. They show that the way count is only one of several label details: balloon volume and size differ between products with the same way count.
| Model (C. R. Bard, Inc.) | Size on record | Label description on record |
|---|---|---|
| Bardex I.C. Foley Catheter, 1851SI20 | 20 French | 30cc/mL balloon, 3 way, wide lumen |
| Bardex Lubricath Foley Catheter Whistle Tip, 0132L22 | 22 French | 3 way continuous irrigation, 5cc balloon, lubricious coated |
| Bardex Lubricath Foley Catheter, 0119L26 (short tip) | 26 French | 3 way continuous irrigation, 5cc balloon, lubricious coated |
| Bardex Lubricath Foley Catheter Creevy Model, 01267524 | 24 French | 3 way continuous irrigation, 75cc balloon, lubricious coated |
The 1851SI20 record also states that the device is single use, prescription-only, and labeled as containing natural rubber latex. Read the balloon volume and size from the label of the exact product; the three balloon volumes above (5, 30 and 75 cc) show it cannot be assumed from the way count.
How urinary catheters are classified
FDA regulates urological catheters and accessories under 21 CFR 876.5130. The general category is Class II (performance standards); a few accessories (ureteral stylet, stylet for gastrourological catheter, and ureteral catheter adapter, connector and holder) are Class I and exempt from 510(k) notification. FDA product codes under that regulation (openFDA device classification, data updated 2026-10-19) separate the product families that carry lumens and ports:
| Product code | FDA device name | Class |
|---|---|---|
| KOD | Catheter, Urological | 2 |
| EZL | Catheter, Retention Type, Balloon | 2 |
| MJC | Catheter, Urological (Antimicrobial) and Accessories | 2 |
| SCT | Foley Catheters and Accessories with Additional Safety Features | 2 |
| FGH | Catheter, Double Lumen Female Urethrographic | 2 |
| PPA | Bladder Irrigation Kit | 2 |
| PPF | Urinary Irrigation Kit | 2 |
| LJH | System, Irrigation, Urological | 2 |
The only device type in the regulation text that names a lumen count is the “double lumen female urethrographic catheter” (product code FGH). FDA does not define 2-way or 3-way as classes.
Why lumens matter in catheter safety literature
The CDC/HICPAC guideline on catheter-associated urinary tract infections (2009) describes two paths for microorganisms: “by the extraluminal route, via migration along the outside of the catheter in the periurethral mucous sheath, or by the intraluminal route, via movement along the internal lumen of the catheter from a contaminated collection bag or catheter-drainage tube junction.” That is why the internal channel and its connections are discussed in infection-control documents. The guideline itself is the place for clinical recommendations; this page does not restate them. The wider picture is in the CAUTI prevention bundle guide.
What to read on a catheter label
The GUDID records above show four label details worth reading for the exact product: the way count, the balloon volume, the French size, and the latex labeling and single-use status. The sources do not rank one way count over another. For size and type comparisons see the urinary catheter types guide and what is a Foley catheter. Products in this category are listed under catheters.
Handling and labeling notes
- The manufacturer’s instructions for use govern the exact product; insertion, balloon filling and irrigation are clinician procedures and are not described here.
- Latex content and single-use status appear on the product label and in its GUDID record.
Common mistakes
- Assuming the way count tells you the balloon volume; the records above show 5, 30 and 75 cc on 3-way products.
- Treating “2-way” and “3-way” as standardized terms; they are manufacturer labels.
- Confusing urinary-catheter ports with implanted vascular ports; they are different devices (see central venous catheters).
FAQ
What is a 3-way catheter?
A Foley-type urinary catheter labeled with three ways: drainage, balloon inflation and a third channel that manufacturers such as C. R. Bard label “continuous irrigation”. The way count is a label term, not an FDA class.
What is the balloon port on a catheter?
The port connected to the narrow channel that fills the retention balloon at the tip. It is separate from the drainage channel.
How many lumens does a Foley catheter have?
A 2-way Foley has a drainage lumen and a balloon lumen; a 3-way adds an irrigation lumen, according to manufacturer labels. Confirm on the product label.
Sources
- 21 CFR 876.5130, Urological catheter and accessories: law.cornell.edu/cfr/text/21/876.5130 (checked 2026-10-30).
- openFDA device classification, regulation 876.5130 (data updated 2026-10-19): api.fda.gov (checked 2026-10-30).
- FDA GUDID records via openFDA UDI, C. R. Bard, Inc. models 1851SI20, 0132L22, 0119L26, 01267524: api.fda.gov (checked 2026-10-30).
- CDC/HICPAC, Guideline for Prevention of Catheter-Associated Urinary Tract Infections (2009): cdc.gov guideline PDF (checked 2026-10-30).
