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Valves designed to prevent and/or control bleeding during endovascular procedures. These devices typically consist of a plastic valve that may be an integral part or attached to a catheter using a Luer (frequently rotatory) fitting. The valve typically includes a lateral port for flushing and a seal at the proximal end that closes the catheter to prevent bleeding. They may also include a side tubing extension intended for administration of fluids. Hemostasis valves are mainly intended to prevent blood loss and/or the entry of air in the circulation.
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