In a medical guide wire 1, a rear half of a leading bulge portion (ellipsoidal helical spring) 5 forms a truncated cone shaped front catheter engagement portion 8. An inner wall of a balloon catheter 2 forms a flared end portion 2A which absorbably fits into the front catheter engagement portion 8 due...http://www.google.com.au/patents/US7150723?utm_source=gb-gplus-sharePatent US7150723 - Medical device including guide wire and balloon catheter for curing a coronary artery
