What does a no.7 knife handle accommodate?

The no. 7 knife handle is designed to accommodate blades 10, 11, 12, and 15, making it a versatile tool in surgical procedures. These specific blades are commonly used for various cutting tasks in surgery, with blade 10 being widely utilized for general incisions, blade 11 for stab incisions, blade 12 for delicate tissue dissection, and blade 15 for curved incisions. The no. 7 handle fits these blades securely, ensuring precise control and stability during surgical procedures.

In contrast, the other options do not align with the characteristics of the no. 7 knife handle. For example, it does not accommodate only large surgical blades, nor is it designed specifically for tissue-cauterizing blades or custom-sized blades. This focus on compatibility with a range of standardized blades is what makes the no. 7 knife handle an essential instrument in surgical settings.