Sternal Puncture Needle This is a Sternal puncture needle, made of stainless steel and manufactured by Thackray Leeds-London, as engraved on the instrument. The needle features a long, ergonomic handle, engraved with the maker's details and "S. England," providing a secure and comfortable grip for the operator. The components of the needle include the mandrin, the arresting stick, and the adjustable front piece, each serving a critical purpose in the procedure. The mandrin is a thin, rigid rod inserted into the hollow needle to block the lumen and prevent tissue or bone fragments from clogging it during insertion. It ensures smooth entry into the bone and allows the needle to reach the bone marrow without obstructions. Once the needle is positioned correctly, the mandrin can be removed to facilitate sample collection. The arresting stick is a safety mechanism that limits the depth of the needle's penetration into the sternum, preventing accidental over-penetration that could damage underlying structures (blood vessels or heart). By adjusting the arresting stick, the operator can precisely control the depth of the needle to suit the patient’s anatomy and the specific requirements of the procedure. The adjustable front piece allows fine-tuning of the needle's length and position, ensuring correct alignment and stabilisation for optimal sampling. It also provides additional control during insertion and helps accommodate variations in patient anatomy. This instrument is designed for sternal bone marrow puncture, a critical diagnostic procedure used to evaluate bone marrow disorders, cancers, or blood-related conditions. The first sternal bone marrow puncture was performed in 1927 by Mikhail Innokentevich Arinkin who was a pioneering Russian physician known for simplifying the technique of bone marrow biopsy, making it a widely adopted diagnostic method. 1950-1999