A retrieval device (400) for retrieving and withdrawing a protection device (352) from a body lumen, comprising:an elongate retrieval sheath (402) having an outer diameter fitting within the body lumen and having an inner diameter defining a retrieval lumenan elongated dilator sheath (405) having an outer diameter approximately equal to the inner diameter of the retrieval sheath (402), the dilator sheath (405) fitting within the retrieval lumen and being longitudinally translatable with respect to the retrieval sheath (402), the dilator sheath (405) having an inner diameter defining a guidewire lumena guidewire (346) disposed within the guidewire lumen and being longitudinally translatable with respect to the dilator sheath (405), the guidewire (346) extending distally beyond a distal end of the dilator sheath (405), the protection device being attached to the guidewire (346) distal to the dilator sheath (405)a nose cone (406) disposed at a distal end of the dilator sheath (405), the nose cone (406) having an inner diameter sized larger than the inner diameter of the dilator sheath (405), a proximal portion of the nose cone (406) having an outer diameter approximately equal to the outer diameter of the dilator sheath (405), a distal portion of the nose cone (406) having an outer diameter that tapers from a maximum adjacent the proximal portion of the nose cone (406) to a minimum at a distal end of the nose cone (406) anda proximal locking device (404) configured to lock the dilator sheath (405) to the guidewire (346).
