Possible Clues:

• Cutting tool
• Surgeon’s tool
• Theatrical knife
• Dissecting knife
• Clasp is loose on the Spanish knife
• Surgical tool's power and energy in surgeon's primary vocation
• Collapse with lack of oxygen after accident? One'll be found in the operating theatre
• Second demand to sheathe sports knife
• Short thin-bladed knife
• "M*A*S*H" prop