Embolisation system for promoting clot formation

A method of manufacturing an embolisation device for promoting clot formation in a bodily lumen, comprising:

• providing a stem;
• providing a plurality of flexible bristles extending outwardly from the stem, the bristles having a contracted delivery configuration and an expanded deployed configuration in which the bristles extend at least radially outwardly from the stem to anchor the device in the lumen;
• providing a membrane support having a contracted delivery configuration and an expanded deployed configuration and comprising a self-expanding mesh;
• mounting an occluding mesh membrane on the membrane support, the occluding mesh membrane having a greater occlusion rate than that of the membrane support;
• and
• attaching the membrane support to the stem such that it extends at least radially outwardly from the stem, the membrane support having a contracted delivery configuration and an expanded deployed configuration in which the radial profile of the membrane support is greater than in the contracted delivery configuration;
• wherein
• the membrane support is attached to the stem at a first longitudinal end, the membrane support further comprising an open second longitudinal end, and
• the occluding mesh membrane is configured to restrict flow through the lumen when the device is deployed and the membrane support is in the expanded deployed configuration.