Temporary wire-based blocking system for blood vessel etc. - uses coiled tubular tungsten@ wire to promote localised clotting, with hollow catheter for introduction of wire to required location

摘要

A flexible tubular wire (3), open at at least one end, is formed in a coil, and may be temporarily straightened for pushing into the tubular body of a positioning catheter (5). The catheter is insertable in a relevant vessel, and the wire may be pushed from its distal end at the required location. The wire comprises a tungsten filament wound helically, treated to form a roughened surface. The wire may be treated thermally to be easily cuttable. An end wire (6) of smaller diameter is attached to one end of the tubular wire to facilitate introduction into the catheter. USE/ADVANTAGE - Temporary blocking system for blood vessel etc. Improved ease of implantation, with surface roughness promoting rapid clotting.