A polymer with a hemocompatible film or coating is manufactured by a one-step method comprising polymerizing monomer droplets comprising at least one crosslinking agent to form a polymer and simultaneously coating the resulting polymer using at least one dispersing agent to thereby form a hemocompatible coated polymer. Control of the pulse duration by the internal timer is disabled by gating the timer output signal with the external signal in a manner such that the gate output signal is only generated when the external timing signal has a predetermined value. A soft polymeric body is bonded to the plate member and encapsulates preferably a plurality of the electronic hearing aid components.