The present invention is related to a linear actuator for a gas regulating valve, comprising: a housing； a yoke mounted inside the housing； a coil assembly inserted within the yoke； a magnetic element inserted within the coil assembly； a circuit assembly coupled to the outer surface of the yoke； and a central aperture adapted to received a gas flow path therethrough, wherein the coil assembly includes a bobbin having a wire coil wound thereon and wire aligning structures adapted to facilitate attachment of ends of the wire coil to the circuit assembly through apertures provided in the yoke, and wherein the coil assembly is adapted to move in a linear direction within the yoke in response to electro-magnetic forces applied by the magnetic element.L'invention concerne un dispositif d'assistance respiratoire comprenant une vanne de régulation de gaz (1300). La vanne de régulation de gaz est activée par un actionneur linéaire (1330). L'actionneur linéaire peut comprendre un élément mobile qui déplace un élément d'obstruction entre une position ouverte et une position fermée. L'actionneur linéaire est isolé d'une voie d'écoulement de gaz par la vanne.
