Introducer sheath
Introducer Sheath[edit | edit source]
An introducer sheath is a medical device used in interventional procedures to facilitate the introduction of other instruments into the vascular system. It is commonly used in cardiac catheterization, angioplasty, and other endovascular procedures.
Design and Function[edit | edit source]
Introducer sheaths are designed to provide a stable and secure access point into the blood vessels. They typically consist of a flexible tube with a hemostatic valve at the proximal end to prevent blood loss and a dilator to aid in vessel entry. The sheath is inserted into the vessel over a guidewire, which helps navigate the sheath to the desired location.
Components[edit | edit source]
- Sheath: The main body of the device, which is inserted into the vessel.
- Dilator: A tapered component used to facilitate the insertion of the sheath into the vessel.
- Hemostatic Valve: A valve that prevents blood from leaking out of the sheath while allowing the passage of instruments.
- Side Port: Some sheaths have a side port for the administration of fluids or medications.
Applications[edit | edit source]
Introducer sheaths are used in a variety of medical procedures, including:
- Cardiac Catheterization: To introduce catheters into the heart for diagnostic and therapeutic purposes.
- Angioplasty: To facilitate the introduction of balloons and stents into narrowed or blocked blood vessels.
- Electrophysiology Studies: To introduce catheters for mapping and ablation of cardiac arrhythmias.
Advantages[edit | edit source]
The use of introducer sheaths offers several advantages:
- Reduced Trauma: Minimizes trauma to the vessel wall during instrument exchange.
- Improved Access: Provides a stable access point for multiple instrument exchanges.
- Hemostasis: The hemostatic valve reduces the risk of bleeding complications.
Complications[edit | edit source]
While introducer sheaths are generally safe, potential complications include:
- Vascular Injury: Damage to the vessel wall during insertion.
- Infection: Risk of infection at the insertion site.
- Thrombosis: Formation of blood clots within the sheath.
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