Modified Dhuma Nasya Yantra

Ayurveda, the ancient Indian system of medicine, describes numerous therapeutic procedures that employ specifically designed instruments (Yantras). Among these, Dhūma Nasya—the controlled inhalation of medicated fumes—is a distinctive procedure indicated in Ūrdhwajatrugata disorders such as Kaphaja Pratiśyaya, Śiroroga, and Netra Roga. Classical texts, describe the Dhūma Netra (or Dhūma Nālikā) as the traditional instrument used for this therapy. However, conventional designs and improvised substitutes (like rolled paper cones or direct use of Dhūmavarti) present major limitations—risk of burns, emission of toxic fumes, uncontrolled smoke flow, and difficulty in standardization. To overcome these challenges, a Modified Dhūma Nasya Yantra was developed based on classical references, expert consultations, and practical considerations for modern clinical use. Instrument modification improves the utility of instruments for specific procedures. It increases durability and ensures long-term use. Modification enhances precision and efficiency during treatment. The redesigned instrument, fabricated from brass for its durability and non-reactivity, comprises three detachable parts—Agrabhāga (inhalation end), Dhūma Nālikā (central tube), and Mūlabhāga (L-shaped base)—along with three Karnikās (Triparvikā) that divide the Nālikā into three chambers (Trikhanda). These structural innovations ensure regulated smoke flow, temperature moderation, and enhanced patient safety. The classical therapeutic lengths—Vairechanika (24 Aṅgula), Snaihika (32 Aṅgula), and Prayogika (48 Aṅgula)—are preserved to maintain traditional pharmacodynamic principles. This modification harmonizes classical authenticity with contemporary feasibility, ensuring safety, sterility, and reproducibility. The Modified Dhūma Nasya Yantra enables standardized administration of Dhūma Nasya Karma, minimizes procedural hazards, and re-establishes the clinical and research relevance of this classical Ayurvedic therapy in modern practice.