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Subcutaneous difference

Learn the S-ICD Difference

After being diagnosed with increased risk for Sudden Cardiac Arrest you will need to move onto choosing a treatment option. During your visits with your doctor, you may have talked about the benefits of an implantable cardioverter defibrillator or ICD device.

An S-ICD (Subcutaneous Implantable Cardioverter Defibrillator) is an evolution in ICD therapy. It’s implanted just under the skin with no wires touching the heart. Thus, it eliminates potentially serious short- and long-term risks associated with placing electrical wires inside the heart or blood vessels.

Questions for Your Doctor: Diagnosis

S-ICD vs other Devices

An S-ICD is different from either a pacemaker or a traditional ICD device. Your S-ICD is placed just under the skin and delivers therapy without the need for electrical wires implanted in the heart.

How the S-ICD Works

How the S-ICD Works

Your S-ICD monitors your heart rhythm 24 hours a day. It’s designed to deliver lifesaving defibrillation therapy (an electric shock to the heart) when it senses that your heart rate is dangerously fast. 

Find a Doctor

Find a doctor.

An S-ICD is a defibrillator implanted subcutaneously without leads touching the heart. Use the hospital locator tool to find S-ICD follow up centres and physicians trained in the S-ICD technology.

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Patient Stories

Meet real patients as they share their stories about living with an S-ICD.

Questions for Your Doctor: Diagnosis

After diagnosis, it’s normal to have questions about what to expect next. Learn some important questions to ask your doctor to help you get the most from your healthcare appointments.


The law restricts these devices to sale by or on the order of a physician. Indications, contraindications, warnings and instructions for use can be found in the product labelling supplied with each device. Information for the use only in countries with applicable health authority product registrations.Content of this website is for Information Purposes only and not meant for product promotion or medical diagnostic. This information does not constitute medical or legal advice, and Boston Scientific makes no representation or warranty regarding this information or its completeness, accuracy or timeliness.
Accordingly, Boston Scientific strongly recommends that you consult with your physician on all matters pertaining to your health or to address any questions.