Devices and methods for radiation-based dermatological treatments

摘要

A device for treating an area of skin by scanning radiation to form a pattern of treatment spots on the skin may include a radiation source that generates an input beam, and a scanning system that scans the input beam to provide a sequential series of reflected output beams that form a pattern of treatment spots on the skin. The scanning system may include a rotating scanning element including a plurality of reflection surfaces, each configured to reflect the input beam in an angular direction to provide one of the reflected output beams, such that as the rotating scanning element rotates about an axis, the input beam is sequentially reflected by different reflection surfaces to provide the sequential series of reflected output beams, wherein a first reflection surface is offset from a second reflection surface in a direction generally along the axis of rotation of the rotating scanning element.

主权项

1. A device for treating an area of skin by scanning radiation to form a pattern of treatment spots on the skin, comprising:
a radiation source configured to generate an input beam; and a scanning system configured to scan the input beam to provide a sequential series of reflected output beams that form a pattern of treatment spots on the skin, the scanning system including:
a rotating scanning element including a plurality of reflection surfaces, each configured to reflect the input beam in an angular direction to provide one of the reflected output beams, such that as the rotating scanning element rotates about an axis of rotation, the input beam is sequentially reflected by different reflection surfaces to provide the sequential series of reflected output beams;wherein a first reflection surface configured to provide a first reflected output beam is offset from a second reflection surface configured to provide a second reflected output beam in a direction of offset generally along the axis of rotation of the rotating scanning element;wherein the first and second reflection surfaces receive the input beam at the same angle of incidence, and wherein the first and second reflected output beams provided by the first and second reflection surfaces are offset from and parallel to each other; andwherein a first geometric path length of the input beam from the radiation source to the first reflection surface is different than a second geometric path length of the input beam from the radiation source to the second reflection surface; andone or more distance compensating mirrors arranged downstream of the rotating scanning element and configured to receive the offset and parallel first and second reflected output beams and both:
(a) directionally deflect the first and second reflected output beams, and(b) compensate for the difference between the first and second geometric path lengths of the input beam, such that a first total geometric path length of radiation from the radiation source to the skin via the first reflection surface and the one or more distance compensating mirrors is equal to a second total geometric path length of radiation from the radiation source to the skin via the second reflection surface and the one or more distance compensating mirrors.