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# Hamilton Recalls Ventilatory Breathing Circuit Sets
- URL: https://www.fdaweb.com/hamilton-recalls-ventilatory-breathing-circuit-sets/
- Published: 2025-07-31T12:00:00.000Z
- Updated: 2026-09-14T15:18:03.000Z
- Author: David McFarland
- Tags: Devices, #legacy-id-D5159601

Hamilton Medical has recalled (Class 1) its coaxial (1.8 m) breathing circuit set with flow sensor and expiratory valve that are used with HAMILTON-C1, HAMILTON-T1 and HAMILTON-MR1 ventilators. The breathing circuit may have a crack in its blue tubing, which is used to deliver fresh gas to patients, according to a [recall notice](https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfres/res.cfm?id=214865&ref=fdaweb.com). The crack will “compromise inspiratory and expiratory flows, leading to partial or complete rebreathing of exhaled gases, which could lead to acute hypercapnia, respiratory acidosis, and if unrecognized organ dysfunction,” it says. The notice instructs users to return affected devices.