Glossary Term
Lead (Implantable or External Electrode)
Definition
A lead is a flexible, insulated wire that connects an electronic device, such as a pacemaker, defibrillator, or neurostimulator, to targeted tissue or an electrode. Leads can be implantable, used for internal applications, or external, used temporarily or diagnostically. They transmit electrical signals to stimulate or monitor physiological activity.
Relevance to the MedTech Industry
Leads are integral to medical devices for delivering therapeutic stimulation, recording biological signals, or both. They bridge the device and the body, ensuring effective treatment in applications like cardiac rhythm management, deep brain stimulation, and muscle rehabilitation.
Additional Information & Related Terms
Examples of Applications
Cardiac Devices: Leads connect pacemakers or defibrillators to the heart to regulate or restore normal rhythms.
Neurostimulation: Deliver electrical impulses to treat conditions like Parkinson's disease or chronic pain.
Muscle Stimulation: Used in external devices for physical therapy or rehabilitation of muscle function.
EEG and EMG Monitoring: External leads record brain or muscle activity for diagnostic purposes.
Spinal Cord Stimulation: Implantable leads manage chronic pain by modulating nerve signals.
Related Terms
Electrode: The conductive end of a lead that interfaces with body tissue.
Insulation Material: Covers the lead wire to protect against electrical leakage and biocompatibility issues.
Pulse Generator: The device connected to the lead that generates the electrical signals.
Lead Dislodgement: A complication where the lead moves from its intended position, reducing effectiveness.
Biocompatibility (ISO 10993): Ensures lead materials are safe for long-term use in the body.