LifeVest Wearable Defibrillator
LifeVest Wearable Defibrillator.
Intended use: An assembly of devices worn by a patient to continuously monitor the patient's heart rhythms for the detection of life-threatening arrhythmias (ventricular fibrillation/pulseless ventricular tachycardia) and to defibrillate the heart (restore normal rhythm) with electrical shocks. Monitoring is performed with dry, non-adhesive electrodes and the patient is alerted by the device prior to electrical shock delivery, allowing a conscious patient to disarm the treatment shock; should the patient be unconscious the system releases gel over the electrodes and delivers a shock. The system consists of a wearable vest containing the electrodes and a portable defibrillator carried by the patient.
Key tips
- ·Never skip the daily/shift ready-check - a defibrillator found dead during a code is a real, repeated root-cause finding.
- ·Pads and batteries have real expiration dates - check them on every PM, not just at annual service.
- ·Verify energy-delivery accuracy with a real defibrillator analyzer, not just a self-test pass.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Fails the delivered-energy / discharge test
HighSymptoms: Delivered energy outside tolerance on the analyser, will not charge, or charges slowly.
Root cause: HV capacitor / charging-circuit ageing, or an output-relay fault.
Battery will not hold charge / fails readiness
HighSymptoms: Short standby, readiness indicator shows service, unit fails the self-test on battery.
Root cause: Aged battery pack or a charging fault.
Therapy cable / pads or paddles fault
MediumSymptoms: "Check pads", "connect electrodes", no ECG through pads, poor paceing capture.
Root cause: Worn therapy cable, expired pads, or a paddle / connector fault.
ECG / SpO2 / NIBP / CO2 parameter fault (defib-monitors)
MediumSymptoms: A monitoring parameter drops or is implausible.
Root cause: Patient cable / sensor or the parameter module.
Recorder / data fault
LowSymptoms: No printout, event data will not transfer.
Root cause: Thermal recorder or the data / Wi-Fi interface.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Battery pack
Class Periodic replacementRel. cost $$R&R Easy
Therapy / defib cable
Class Periodic replacementRel. cost $$R&R Fairly easy
Multifunction pads
Class Frequent wear itemRel. cost $R&R Easy
HV / charging board
Class Major service partRel. cost $$$$R&R Difficult
Thermal recorder / print head
Class Periodic replacementRel. cost $$R&R Fairly easy
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Battery pack | Periodic replacement | $$ | Easy |
| Therapy / defib cable | Periodic replacement | $$ | Fairly easy |
| Multifunction pads | Frequent wear item | $ | Easy |
| HV / charging board | Major service part | $$$$ | Difficult |
| Thermal recorder / print head | Periodic replacement | $$ | Fairly easy |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Daily/shift visual and self-test check (AAMI EQ56 daily-ready standard)
- ·Battery and pad expiration-date tracking
- ·Energy-delivery accuracy test against a defibrillator analyzer
- ·Paddle/cable continuity check
- ·Annual full PM
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Fails the discharge / energy test
- Run the full delivered-energy test at several settings with a defib analyser.
- Test synchronised cardioversion and, if fitted, pacing.
- Check the therapy cable and paddles.
- If energy is out of tolerance or charge time is long, remove from service.
- Refer the HV / charging board to the OEM.
Symptom: Fails readiness or dies on battery
- Fit a fully charged battery and repeat the self-test.
- Run a battery capacity test / calibration.
- Confirm the charger and charging contacts.
- Replace the battery pack when capacity is low.
- Log the readiness self-test result before returning to service.
Technical Specs
- MRI safety
- MR Unsafe
- Sterile
- No
- Single use
- No
- FDA distribution status
- In Commercial Distribution
- Device type (GMDN)
- Wearable defibrillation system
- FDA product classification
- Wearable Automated External Defibrillator
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Crash carts (every unit)
- Emergency Department
- ICU
- OR
- Code-blue response areas
Documents & Manuals
No documents available for this device yet.
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