Hamilton G5 Ventilator May Stop Functioning Without Sounding Alarm, FDA Warns

Hamilton G5 Ventilator May Stop Functioning
Hamilton G5 Ventilator May Stop Functioning

Hamilton G5 Ventilator May Stop Functioning
Hamilton G5 Ventilator May Stop Functioning

The Food and Drug Administration (FDA) has issued a serious safety warning about the Hamilton G5 ventilator.

The ventilator may stop working without sounding an alarm when the device operator presses the oxygen enrichment key to attach the ventilator mask to the patient (suctioning maneuver), the FDA warns.

This ventilator problem can occur under the following conditions:

  • When pressing the oxygen enrichment key a second time within 50 milliseconds after the disconnection is detected.
  • When disconnection is detected immediately before the oxygen enrichment period automatically ends, so that detection of disconnection and termination of O2-enrichment occur within 50 milliseconds of each other.

If the device operator does not intervene, the patient may not receive enough oxygen and could suffer serious adverse health consequences, including injury or death. The recall notice on the FDA web site has a list of affected catalog numbers.

The recalled ventilator is the G5 Ventilator V2.00 and V2.31, distributed from March 2007 to March 2014. The firm has received one report of a ventilator malfunction. No injuries or deaths have been reported. This is a Class 1 recall, the FDA’s most serious recall category.

The FDA advises that after a suctioning maneuver is completed, the operator must verify that the ventilation continues. If ventilation has stopped, the operator should take action to re-establish ventilation. The operator can

  • Press the “Manual Breath” key on the ventilator’s front side.
  • Change the ventilation mode.
  • Switch to the “Standby Mode” and return to the previously used ventilation mode.

The FDA advises operators to keep this information with the G5 Operator’s Manual. The agency advises distributors to send the Medical Device Safety Alert immediately to all operators of G5 ventilators. The distributor should permanently disable automated suctioning maneuver functionality on all G5 ventilators by using a software key provided by the manufacturer. In addition, the distributor should update the G5 Operator’s Manual with the disabled automated suctioning functionality as soon as possible.

The FDA encourages health care professionals and patients to report adverse events or side effects MedWatch Safety Information and Adverse Event Reporting Program: www.fda.gov/MedWatch/report. Reports can be made online, by mail, by phone, or by fax.