U.S. flag An official website of the United States government
  1. Home
  2. Medical Devices
  3. Medical Device Safety
  4. Medical Device Recalls
  5. Hamilton Medical Inc. Recalls HAMILTON-C1, C2, C3, T1 Ventilators for Software Issues that May Cause Ventilators to Stop Without Notice
  1. Medical Device Recalls

Hamilton Medical Inc. Recalls HAMILTON-C1, C2, C3, T1 Ventilators for Software Issues that May Cause Ventilators to Stop Without Notice

The FDA has identified this as a Class I recall, the most serious type of recall. Use of these devices may cause serious injuries or death.

Recalled Product

Device Use

Hamilton ventilators are used for people who require full or partial breathing assistance from a mechanical ventilator. Health care professionals use them during patient transport within or outside hospital settings. The ventilators support adults, children, and optionally infants and newborns.

Reason for Recall

Hamilton Medical Inc. is recalling the HAMILTON-C1, C2, C3, T1 ventilators after receiving reports of software issues that may cause the ventilators to stop without notice. The ventilator will switch to 'Ambient State' if the device is used for more than 91 days without a restart in neonatal patient group.

During the 'Ambient State' the ventilator will alarm and display the following on the screen:

Display of 'Ambient state,' a technical fault on the ventilator screen.

This may require a health care professional to intervene, provide air supply to the patient with a manual resuscitating device, and use an alternative device. Serious consequences or death may result for patients who do not breathe on their own or do not receive immediate intervention.

There have been 80 reported complaints, no injuries, and no deaths related to this recall.

Who May be Affected

  • People who receive breathing support from HAMILTON-C1, C2, C3, T1 ventilators
  • Health care providers who provide breathing support care for patients with HAMILTON-C1, C2, C3, T1 ventilators

What to Do

On June 15, 2023, Hamilton Medical Inc. sent all affected customers an Important Medical Device Advisory. The letter requested customers to:

  • Provide alternative ventilation immediately.
  • Switch off ventilator power to exit the 'Ambient State.'
  • Service the ventilator once patient safety is ensured. (After passing the service software the device can be returned to use.)

Contact Information

Customers with questions about this recall should contact Hamilton Medical AG Technical Support at +41 58 610 10 20 or email techsupport@hamilton-medical.com.

Full List of Affected Devices

A complete list of affected devices is available in the Medical Device Recalls database.

Additional Resources

How do I report a problem?

Health care professionals and consumers may report adverse reactions or quality problems they experienced using these devices to MedWatch: The FDA Safety Information and Adverse Event Reporting Program using an online form, regular mail, or FAX.


Subscribe to Medical Device Safety and Recalls

Sign up to receive email updates on medical device recalls, safety communications, and other safety information.

Back to Top