Venous nitinol embolization inserts

摘要

A venous nitinol embolization insert for restricting blood flow includes a tubular member and an embolization material attached to the tubular member. The embolization insert provides a predetermined blood flow rate based on experimental data. A method of controlling restriction of blood flow to a targeted vascular site within a patient's body includes selecting an insert that provides a predetermined blood flow rate corresponding to a desired blood flow rate. The embolization insert is selected from a plurality of embolization inserts that provide varied blood flow rates.

主权项

1. A medical system for controlling blood flow within a blood vessel, the medical system comprising:
a tubular member having a tubular wall and a single lumen extending along a longitudinal axis of the tubular member; and embolization material that allows for a predetermined blood flow rate within the blood vessel, wherein the embolization material is placed within the single lumen of the tubular member and includes a plurality of flow reduction material particles made of material that is stable in the blood flow, the flow reduction material particles occupying a particle volume decreasing a free volume inside the tubular member, the flow reduction material particles being spherical and dispersed substantially throughout the entire single lumen of the tubular member, the particle volume corresponding to a predetermined degree of axial blood flow reduction through the tubular member, wherein the predetermined blood flow rate is greater than zero.