Lecture 26: Cryosurgery
Lecture 26: Cryosurgery
Cryosurgery:ablation of undesired tissues Tumor(benign or malignant) wart,acne scars（疣，瘤，痣，粉刺) cysts(囊肿) Others
• Cryosurgery: ablation of undesired tissues – Tumor( benign or malignant) – wart, acne scars（疣，瘤，痣, 粉刺) – cysts (囊肿） – Others
Cryosurgery devices ·Cotton-tip 2004 D avid Klemm ·Spray ·Cryoprobes Touchable inserted
Cryosurgery devices • Cotton‐tip • Spray • Cryoprobes – Touchable – inserted
Coolants used for Cryosurgery ·Liquid N2(-196C) ·Liquid N20(-98C) ·Argon(-140°C)
Coolants used for Cryosurgery • Liquid N2 (‐196oC) • Liquid N2O (‐98oC) • Argon (‐140oC)
A typical process of cryosurgery (movie)
• A typical process of cryosurgery (movie)