It is a type of swedam (fomentation) that comes under Sa-Agni Snigdha. Swedam means fomentation with the help of Sneha,i.e. Taila, Ghee, Vasa, and Majja.
In this procedure, warm oil is retained at the Kati pradesha,i.e. the sacral and lumbar region within a specific formed frame for a prescribed time. The patient has to lie down in a prone position and the Kati pradesha is encircle... https://ayurvedicvillage.com/kativasti-treatment.php