Final answer:
The Ryder Needle Holder is a surgical tool used in medicine for delicate suturing in cardiovascular and cardiothoracic surgeries, providing precision and control.
Step-by-step explanation:
The Ryder Needle Holder is a surgical instrument used primarily in medicine for the purpose of grasping, holding, and suturing with delicate cardiovascular (CV) and cardiothoracic (CT) needles. It is designed to provide a secure grip on fine needles used during surgical procedures, particularly in the delicate tissues of the cardiovascular system. The design of the needle holder allows for precise control and manipulation by the surgeon, which is critical in operations requiring minute and careful stitching.