How to Tell If a Medical Device Is Safe to Use

When you’re caring for an aging parent at home, you end up responsible for medical equipment you were never trained to evaluate, a hospital bed, a wheelchair, an oxygen concentrator, a patient lift, a CPAP machine. Often it arrives secondhand: donated, bought used, handed down from a relative, or sourced from an equipment-reuse program to save money. And a quiet worry follows it through the door: is this thing actually safe? Could it hurt the person I’m trying to help, and how would I even know?

You don’t need a biomedical engineering degree to vet medical equipment responsibly. You do need to know what to look for, where the real risks hide, and when a device is beyond what a careful eye can assess. This guide gives you a practical, step-by-step way to tell whether a medical device is safe to use at home, from a hands-on inspection to recall checks, used-equipment vetting, and the specific hazards of the most common home device of all, the hospital bed.

Why Device Safety Matters More at Home

In a hospital, an entire department of biomedical engineers inspects, tests, and maintains every device on a schedule. At home, that safety net is gone, the responsibility lands on you, usually with no training and no testing equipment. That gap matters, because medical devices do cause harm. The FDA’s adverse-event database logged more than 4.4 million reports over a recent seven-year period, including roughly 68,000 deaths and nearly 1.2 million injuries.¹ Troublingly, more than half of those reports were filed late by manufacturers, meaning safety signals often reach the public slower than they should.¹

The point isn’t to frighten you away from equipment that helps your parent live safely at home, it’s to take device safety seriously as your job now. A methodical approach catches the great majority of problems before they cause harm. The vast majority of home medical equipment is safe and beneficial; the goal is simply to make sure the specific device in your parent’s room is one of them, and to know the warning signs if it isn’t. Think of it the way you’d think of checking a car before a long drive: a few minutes of deliberate inspection prevents the rare but serious failure, and it quickly becomes a habit rather than a chore.

Start With a Thorough Visual Inspection

The first and most accessible safety layer is a careful physical inspection. Before using any device, especially a used one, examine it slowly and completely in good light. Check the housing and frame for cracks, dents, corrosion, missing screws, or unstable parts. Inspect every cord, cable, plug, and connector for fraying, exposed wiring, burn marks, or melted spots, electrical damage is both common and dangerous. Test moving parts: wheels and casters for wear and locking, hinges and joints for stability, buttons and controls for proper response. Look at patient-contact surfaces for damage or wear that could pinch, cut, or harbor infection. Confirm that labels, model numbers, and safety markings are present and legible, and that nothing appears to have been jury-rigged or repaired with tape.

Trust your senses: anything that looks burnt, smells of overheating, makes an unusual noise, feels unstable, or has visibly missing or broken parts is a stop sign. A basic visual inspection is often enough for simple, non-powered accessories, but as we’ll see, it is not enough for anything electrical or patient-connected.

Check for Recalls and Safety Alerts

A device can look perfect and still be subject to a safety recall for a hidden defect. Checking is quick and free, and most caregivers don’t know to do it. The FDA maintains a public medical device recall database where you can search by device name, manufacturer, or model. Before relying on any significant piece of equipment, search it there, and look up the manufacturer’s own safety-alert page as well.

Record the device’s make, model, and serial number and keep them; you’ll need them to check recalls, confirm that any service records belong to that exact unit, and register for future safety notifications. If a device turns up in a recall, follow the listed remedy, which may be a repair, a replacement part, or discontinuing use entirely, rather than assuming “it’s probably fine.”

Verify the Source and History

Used and donated equipment can be a smart, budget-friendly choice, but its safety depends heavily on where it came from and how it was maintained. The single strongest indicator of a used device’s safety is its service history: records of preventive maintenance, part replacements, repairs, and inspections by qualified personnel. A device with a documented maintenance history is far safer than one with an unknown past.

When acquiring used equipment, do four things: verify the serial number matches any paperwork; ask for service and maintenance records; check the seller’s credentials (a reputable DME supplier or established reuse program is safer than an anonymous online listing); and confirm the warranty or return terms. Legitimate durable medical equipment reuse programs, run by many state aging departments and nonprofits, typically clean, sanitize, and inspect equipment before redistributing it, which makes them a safer source than a private sale. For help weighing the trade-offs, see our guide on whether to rent or buy medical equipment.

Know When You Need Professional Testing

Be honest about the limits of a visual check. For diagnostic, monitoring, life-support, or any patient-connected or mains-powered device, oxygen concentrators, CPAP/BiPAP machines, powered patient lifts, monitors, a careful look is not sufficient to confirm safety. These devices can have internal faults, electrical leakage, or calibration problems that are invisible from the outside and dangerous to the user.

For this category, involve a qualified professional: a biomedical or clinical engineer, the equipment supplier’s service technician, or the manufacturer. Electrical safety testing, checking earth continuity, insulation resistance, and leakage current, is especially important for anything that plugs into the wall or connects to the patient, and it requires proper instruments. When a device plays a direct role in keeping your parent safe or alive, professional verification is not an indulgence; it’s a requirement.

Special Focus: Hospital Bed Safety

The hospital bed deserves its own attention, because it’s the most common home medical device and carries specific, well-documented hazards that families rarely know about. The most serious is entrapment, the risk that a patient’s head, neck, or chest can become caught in the gaps between rails, the mattress, and the frame. The FDA has defined seven specific “zones of entrapment,” and mismatched components (an aftermarket mattress that doesn’t fit the frame, or rails not designed for that bed) are a leading cause.

When evaluating a hospital bed, confirm that the mattress fits the frame snugly with no dangerous gaps, that side rails are the correct ones for that exact bed and latch securely, that the weight capacity suits the patient, and that the motor, controls, and locking casters all work properly. This is one reason buying a bed as a complete, matched system from a reputable manufacturer is safer than assembling mismatched secondhand parts. A well-designed modern bed such as the SonderCare Aura Premium is engineered as an integrated system, frame, mattress, and assist rails built to fit together, which removes much of the entrapment risk that comes from piecing equipment together. For more on bed types and features, see our guide to the high-low bed.

Cleaning and Infection Control for Used Equipment

Safety isn’t only mechanical and electrical, it’s also biological. Used and donated equipment can carry germs from a previous user, and for an older adult with a weakened immune system, that’s a genuine risk. Before a secondhand device touches your parent, it needs a thorough cleaning and disinfection appropriate to its type.

For hard, non-porous surfaces, bed frames, rails, wheelchair arms, walker grips, commodes, clean off any visible soil first, then disinfect with an appropriate EPA-registered disinfectant, following the contact time on the label (wiping and immediately drying often doesn’t disinfect; the surface usually needs to stay wet for a stated period). Pay special attention to high-touch and patient-contact points: handgrips, controls, rails, and seating surfaces. Soft or porous components like mattresses, slings, and cushions are harder to disinfect and may need replacement if they can’t be properly cleaned or if there’s any sign of fluid penetration, staining, or odor, a damaged or contaminated mattress is both an infection risk and a pressure-injury risk. Reputable equipment-reuse programs sanitize devices before redistribution, which is one of their key safety advantages over a private sale. When in doubt about whether something can be adequately cleaned, err toward replacing the soft components and keeping the durable frame.

Safe Setup and Use

Even a perfectly safe device becomes dangerous when used incorrectly. Always read the manufacturer’s manual before first use, if a used device came without one, you can almost always download it from the manufacturer’s website. Pay attention to weight limits, assembly instructions, and maintenance schedules, and don’t improvise or substitute parts. Set the equipment up on stable, level flooring, keep cords out of walking paths, and make sure everyone who will use it knows how. Following the instructions isn’t bureaucratic caution; the manufacturer’s limits exist because exceeding them is exactly how injuries happen.

Red Flags: When to Stop Using a Device

Some signs mean stop now and don’t use the device until it’s been professionally checked or replaced:

• Frayed cords, exposed wiring, burn marks, or any electrical smell
• Cracks in the frame, missing or broken structural parts, or visible instability
• A device that’s been recalled and not remedied
• Unusual noises, overheating, smoke, or sparking
• Controls that respond erratically or fail intermittently
• Rails or mattresses that don’t fit or latch properly on a hospital bed
• Any device with an unknown service history that performs a critical, patient-connected function

When in doubt, take it out of service. No cost saving is worth an injury to a vulnerable person.

A Quick Safety Checklist

Run through this for any device entering your parent’s home:

• Visual inspection passed (frame, cords, wheels, controls, surfaces, labels)
• Make, model, and serial number recorded
• Checked against the FDA recall database and manufacturer alerts
• Service history obtained (for used equipment) and source verified
• Professional/electrical testing arranged for powered or patient-connected devices
• Manufacturer’s manual obtained and read; weight limits confirmed
• For hospital beds: matched mattress and rails, secure latching, working motor and brakes
• Everyone using the device knows how to operate it safely

The Bottom Line

Telling whether a medical device is safe to use comes down to a disciplined routine: inspect it carefully, check it for recalls, verify its source and history, get a professional to test anything electrical or patient-connected, and use it exactly as the manufacturer intends. For hospital beds specifically, insist on properly matched components to avoid entrapment. None of this requires special expertise, just attention and a willingness to stop using anything that fails the test. Done consistently, it lets you get the benefit of the equipment your parent needs while protecting them from the harm a faulty or misused device can cause.

If you’d like guidance on choosing safe, well-designed equipment for your parent’s care, you can speak with a SonderCare expert for personalized help.

References

1. Manufacturer reporting of medical device adverse events in the FDA MAUDE database, 2017–2023. BMJ, 2025. https://www.bmj.com/
2. U.S. Food and Drug Administration. Medical Device Recalls and Early Alerts. https://www.fda.gov/medical-devices/medical-device-safety/medical-device-recalls
3. U.S. Food and Drug Administration. Medical Device Recall Database (accessdata). https://www.accessdata.fda.gov/scripts/cdrh/cfdocs/cfres/res.cfm
4. The Joint Commission. Medical Equipment, Initial Safety Check. https://www.jointcommission.org/
5. U.S. Food and Drug Administration. Hospital Bed Safety and Entrapment Zones. https://www.fda.gov/medical-devices/bed-rail-safety/hospital-bed-safety