Implantable intrathecal infusion pump, programmable

Implantable intrathecal infusion pumps are battery‑powered devices placed inside the body that store medication and deliver it directly into the cerebrospinal fluid space. They are programmed to release precise doses of analgesics or muscle‑relaxant drugs, helping manage severe pain or spasticity that does not respond to other treatments.

These pumps are regulated as implantable drug‑delivery systems and must meet safety and performance standards for both the hardware and the medication they dispense. They are typically supplied with a refillable reservoir and an external programmer that uses radio‑frequency signals to adjust dosing, and their classification can differ between regulatory regions.