Medicine shows what happens when someone treats the magnet itself — its geometry, its freedom to rotate, its field shape — as a design variable rather than a purchased part. The signature case: cochlear implants once contraindicated MRI scans, because the scanner would torque and demagnetize the implant magnet. Redesigning the magnet fixed what no amount of shielding could.
EVIDENCE TAGS:shipping — confirmed in productsdemonstrated — trials/demosillustrative — plausible, not confirmed
MED-EL SYNCHRONY: the implant magnet that turned MRI-safe
shippingMED-EL’s SYNCHRONY cochlear implant uses a rotatable, diametrically magnetized implant magnet: inside an MRI it simply swings to align with the scanner’s field instead of fighting it. Result: MR-Conditional at 1.5T and 3T with the magnet left in — no surgical removal before a scan.
Why coded · The lesson generalizes: the field architecture of the magnet, not its strength, was the blocker. That is precisely the layer coded magnetization operates on.
Cochlear Baha Attract: transcutaneous hold
shippingCochlear’s Baha Attract system couples a bone-conduction sound processor through intact skin with an implanted magnet plate — no percutaneous abutment, no daily wound care. Holding force through millimetres of tissue, comfort against necrosis: a force-versus-gap engineering problem.
Levita Magnetics: surgery held by magnets
shippingLevita’s FDA-cleared Magnetic Surgical System retracts organs (gallbladder, stomach) with a magnetic grasper steered through the abdominal wall by an external magnet — one fewer port hole in the patient. Over 1,000 surgeries performed.
Why coded · Force delivered across a boundary with no penetration is the medical version of torque-across-a-gap.
Magnetic compression anastomosis
demonstratedMagnamosis (UCSF) and GI Windows use self-centering magnet pairs that find each other through tissue, compress, and form a gut connection as the tissue between them remodels — sutureless anastomosis. Human trials exist; general clinical adoption is still under way.
Why coded · Self-centering through tissue is the align behavior doing surgery.
Coded sterile tooling & breakaway lines
illustrativeKeyed magnetic mounts that accept only the matching instrument; IV or gas lines that break away cleanly at a designed force rather than tearing free. Both map directly onto shipping coded-magnet functions; neither is confirmed in a named medical product.