TASK DEFINITION: Translate the given Spanish text to English
PROBLEM: The actuating means cooper-ate with elements actuating the springs of the hook switch.

SOLUTION: DISPOSITIVO INTERRUPTOR DE GANCHO PARA APARATO TELEFONICO DE UN CUERPO.

PROBLEM: The dispenser (10) is of an ergonomic shape, provides for single hand use.

SOLUTION: El surtidor es de una forma ergonomica que proporciona un uso de mano Unica.

PROBLEM: Methods and compositions for use in perfusion applications are provided.

SOLUTION:
Se proporcionan metodos y composiciones para usarse en aplicaciones de perfusion.