MEDICAL DEVICES WITH ECHOGENIC COATINGS

摘要

A medical device for insertion into human body having an echogenic portion o f enhanced visibility in an ultrasound scan. The echogenic portion includes an echogenic material comprising a plastic impregnated with sonically reflectiv e particles, the particles having an average size of less than 500 nanometers and formed of a substance having a specific gravity of 5 or greater. Preferably the particles have an average size of less than 100 nanometers an d the sonically reflective particles are 5 % to 40 % of the echogenic material .