1768 | : | Cavallini performed hysterectomy on sheep and dogs. |
1889 | : | Stinson was first to practice systematic ligation of ovarian and uterine vessels preliminary to hysterectomy operation. |
1929 | : | Richardson originally described the technique of abdominal hysterectomy by applying clamp from above downwards. |
1992 | : | Dilip Kumar Dutta performed ligation uterine artery prior to conventional hysterectomy procedure. |
2000 | : | Dilip Kumar Dutta performed new techniques of abdominal hysterectomy-clampless. |
2003 | : | Dilip Kumar Dutta demosntrated this technique at World Congress, Santiago (Chile). |
2006 | : | Dilip Kumar Dutta demosntrated this technique at World Congress Kualalampur (Malaysia). |