IJRAP International Journal of Research in Ayurveda and Pharmacy 2277-4343 Moksha Publishing House 10.7897/2277-4343.1306160 THE CONCEPTUAL STUDY ON YANTRA: A REVIEW Siddayya Aradhyamath Aiyanna PP Samtha S * 11 -0001 76 81 Yantras are inevitable parts of all minor and major surgical procedures. In surgeries and even in wound cleaning, we need yantras to take a sterilised gauze piece. This article throws light on the ancient yantras which have been used in the olden days. An attempt has been made to compile the Yantras mentioned in the Sushruta Samhita and Ashtanga Hridaya. The different types of yantras, like Swastika yantra, Samdamsa yantra, Tala yantra, Nadi yantra, and Upayantra, are being told in this article in addition to those mentioned in Ashtanga Hridaya. Yantras Sushruta Samhita Ashtanga Hridaya