Medical devices that must be removed before cremation fall into two groups: anything with a battery or pressurized component, and radioactive implants placed within a certain window before death. Pacemakers, defibrillators, neurostimulators, and implantable drug pumps all have to come out because their batteries will explode at cremation temperatures. Brachytherapy seeds may need to be removed depending on how recently they were implanted. Passive metal hardware — hip replacements, bone screws, dental implants, surgical mesh — stays in the body and causes no problem.
Battery-Powered Devices That Must Come Out
Pacemakers are the device every crematory asks about. Traditional pacemakers run on lithium-iodide batteries, the standard power source for cardiac pacemakers since the 1970s.1PubMed. The Lithium/Iodine Battery: A Historical Perspective Inside a cremation chamber, those batteries undergo explosive disintegration. Testing at thermal cremation temperatures recorded sound levels above 120 decibels and visible damage to the brick structures inside the chamber.2Beth Israel Deaconess Medical Center. Safety and Behavior of Implantable Electronic Devices During Cremation A damaged retort can cost hundreds of thousands of dollars to repair.
Implantable cardioverter-defibrillators are even more dangerous. They’re physically larger than pacemakers and carry higher-capacity batteries; the same testing found larger devices produced more kinetic energy, louder explosions, and more chamber damage.2Beth Israel Deaconess Medical Center. Safety and Behavior of Implantable Electronic Devices During Cremation
The removal rule extends well past the heart. Any implanted device with a battery or pressurized reservoir needs to be explanted:
- Deep brain stimulators and spinal cord stimulators. The implantable pulse generators used in these neurostimulation systems contain batteries and must be removed before cremation because they can explode.3Abbott. Important Safety Information
- Implantable drug pumps, including pain pumps and, less commonly, insulin pumps, which may contain pressurized reservoirs or batteries.
- Bone growth stimulators and functional electrical stimulators, which are battery-powered and fall under the same requirement.
One exception worth flagging: some leadless pacemakers, implanted directly inside the heart chamber without lead wires, are small enough that certain manufacturers consider them safe to leave in place.4Medtronic. Should a Heart Device Be Removed Prior to Cremation If the decedent had a leadless pacemaker, the funeral director should confirm with the manufacturer before deciding.
Radioactive Implants and the Timing Rule
Brachytherapy seeds, used mainly in prostate cancer treatment, are the radioactive implants crematories encounter most often. The seeds are designed to stay in the body permanently, and the Nuclear Regulatory Commission has noted that permanent implants are generally not intended to be removed, though precautions apply when cremation is involved.5U.S. Nuclear Regulatory Commission. Burial of Patients With Permanent Implants Whether seeds need to come out depends entirely on when they were placed.
The two common seed types decay on different schedules. Iodine-125 seeds are generally considered safe for cremation once 12 months have passed since implantation. Palladium-103 seeds decay faster and reach safe levels after about 3 months. If death occurs before those windows close, the seeds ideally should be removed. When cremation proceeds without removal, the remains require special handling: staff should wear respirators and gloves, and families may be advised not to scatter the ashes until the material has fully decayed, which can take up to 20 months for I-125 seeds.6Canadian Radiation Protection Association. Radiation Safety Following the Death of a Patient Implanted With Sealed Radioactive Sources
If the decedent had brachytherapy, tell the funeral director the implantation date. That date drives every decision that follows.
Implants That Safely Stay
Most hardware people worry about is fine. Cremation chambers operate between roughly 1,400°F and 1,800°F. Titanium, the most common orthopedic implant material, melts above 3,000°F, so hip and knee replacements come through intact. Stainless steel pins, screws, and rods do too. None of this material combusts, releases toxic fumes, or damages equipment.
Other implants that stay in the body during cremation include:
- Dental implants, gold bridgework, and porcelain crowns. Gold melts and mixes into the remains, so it cannot be recovered afterward.
- Breast implants, silicone or saline. The contents melt and vaporize.
- Surgical mesh, staples, and wire sutures, which are too small or inert to cause any issue.
- Artificial lenses and cochlear implant housings. The non-electronic components are harmless at cremation temperatures.
The Authorization Form and Your Liability
Before any cremation, the next of kin or legally authorized representative signs a cremation authorization form. It almost always asks specifically whether the decedent has a pacemaker, defibrillator, or other battery-powered or radioactive implant. State requirements vary; some require the form to be notarized or witnessed.
The person signing warrants the truthfulness of the disclosures, including whether hazardous implants are present. If an undisclosed pacemaker explodes and damages the retort, the authorizing agent bears primary responsibility. If the agent disclosed the device but the funeral director failed to arrange removal before transferring the body, the funeral director shares liability. The crematory is generally protected when it relies in good faith on what the form says.
That disclosure question is not a formality. If you’re arranging cremation and aren’t sure whether the decedent had a cardiac device or other implant, check medical records or call the treating physician before signing. The exposure is personal.
How Removal Works and What It Costs
The procedure itself is quick. A mortician or pathologist makes a small incision at the device site, disconnects any lead wires, and extracts the unit.4Medtronic. Should a Heart Device Be Removed Prior to Cremation A chest pacemaker takes about 15 minutes. The incision is closed so a viewing can still take place.
Removal fees vary by provider and region. Expect somewhere in the range of $100 to $300 on top of other cremation costs, covering professional time, biohazard handling, and disposal. Some manufacturers, including Abbott, require explanted pulse generators to be returned to them for safe disposal because of the battery materials.3Abbott. Important Safety Information
What Happens to the Metal Left Behind
Titanium joints and steel rods that survive cremation don’t go into the urn. They’re separated out before the remains are processed into the fine powder returned to the family.
Most crematories collect this leftover metal and send it to specialized recyclers. Industry standards from the Cremation Association of North America and the International Cemetery, Cremation and Funeral Association state that the intent to recycle and any financial proceeds should be disclosed to the person authorizing the cremation. Proceeds can be kept as business income, donated, or redeemed for goods and services; no universal rule governs their use.7Cremation Association of North America / ICCFA. Statement on Non-Organic Waste Recycling
Families do not receive money from the recycling, and the metal cannot be returned in identifiable form after cremation.8Cremation Recycling. Legal If you want to keep a specific piece of hardware for sentimental reasons, it has to be surgically removed before cremation. The authorization form should spell out the recycling arrangement, and you’re within your rights to ask how the crematory handles the proceeds before you sign.