My latest folding knife purchase is a ”Folding Titanium Craft Scalpel Knife”....

The “knife” is small, weighs 1 ounce and starts out razor sharp. When a blade gets dullish, I s’pose you could try touching up the edge, but #24 scalpel blades are common and available in carbon steel or stainless. Blade swaps are fairly straight forward, the blade’s spring-steel attribute holds it firmly in place. All-in-all I like it; easy way to carry an EDC scalpel in your pocket.