MUMBAI, India, June 22 -- Intellectual Property India has published a patent application (202641069421 A) filed by Dr Prasanth; and Dr Varna R on June 03, 2026, for Nickel–titanium Grooved Retrieval System For Fractured Endodontic Instruments..
Inventors include Dr Prasanth Balan; Dr Varna R; Dr Nishad N T; Dr M Rajesh Karthik; Pavan Prasanth; and Parthiv Prasanth.
The application for the patent was published on June 12, 2026, under issue no. 24/2026.
Abstract: Nickel–Titanium Grooved Retrieval System for Fractured Endodontic Instruments relates to a Nickel–Titanium (NiTi) retrieval instrument for removing fractured endodontic files from root canals. The instrument comprises a proximal shank head (1), neck portion (2), tubular body (3), tapered transition zone (4), and a distal working region having a hollow lumen (9) terminating in a distal opening (8). The hollow lumen (9) includes internal engagement structures comprising helical grooves (5) and a negative cross-sectional profile configured to mechanically engage and retain fractured instruments. The profile may vary in geometry and dimensions to correspond with different endodontic file systems. A distal cutting rim (6) and cutting edge (7) facilitate controlled advancement around the fractured fragment while minimizing dentin removal. The super-elastic NiTi construction enables adaptation to curved canals, providing secure engagement, reduced slippage, and efficient retrieval of fractured endodontic instruments
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