A coronary sinus catheter for the retrograde infusion of cardioplegia solutions into the coronary sinus. The catheter is adapted for improved retention in the coronary sinus. The catheter comprises a catheter tube having infusion, pressure-sensing and balloon-inflation lumens, an inflatable balloon and...http://www.google.com.tw/patents/US5324260?utm_source=gb-gplus-share專利 US5324260 - Retrograde coronary sinus catheter
