Hand-held laser scanner
AssigneeLumenis Ltd.
InventorDavid Trost
Life of this patent
Estimating the term…
Abstract
A surgical laser scanner having optics that scans a pulsed laser beam onto a target tissue is disclosed. The laser scanner has a lens and a scanning mirror or mirrors located upstream of the lens at a distance substantially equal to the focal length of the lens. The laser beam hits the scanning mirror and is reflected onto the lens in a pattern defined by sequential positions of the scanning mirror. The laser beam is projected onto the target tissue by the lens in a direction parallel to the optical axis of the lens. The projected pattern has a constant size regardless of the distance between the laser scanner and the target tissue.
Claims19
A surgical handpiece for connection to a laser that generates a laser beam, wherein the handpiece scans the laser beam onto a target tissue, the handpiece comprising:
- a housing having an input end and an output end;
- a first scanning mirror mounted in the housing for reflecting a laser beam entering the housing input end;
- and
- a lens mounted in the housing onto which the first scanning mirror reflects the laser beam and through which the laser beam is refracted through the housing output end and onto the target tissue, wherein the lens has a focal length and the first scanning mirror is located at a distance from the lens that is substantially equal to the focal length so that any variation in the size of a pattern projected onto the target tissue is minimal as the spacing between the housing and the target tissue is varied.
A surgical handpiece that receives a laser beam and produces a pattern of laser spots on a target tissue, the handpiece comprising:
- a housing having an input end and an output end;
- at least one mirror rotatably mounted in the housing for scanning a laser beam entering the housing input end in a pattern;
- and
- a lens mounted in the housing for projecting the laser beam through the housing output end and onto the target tissue in a pattern of laser spots having locations that are independent of spacing between the housing and the target tissue.
A surgical handpiece for connection to a laser that generates a laser beam, wherein the handpiece scans the laser beam in a two-dimensional pattern onto a target tissue, the handpiece comprising:
- a housing having an input end and an output end;
- at least one beam conditioning optic located adjacent to the input end of the housing;
- a pair of mirrors rotatably mounted in the housing each of which is independently rotatable about one of a pair of axes that are orthogonal to each other and orthogonal to the laser beam, wherein the mirrors are positioned adjacent each other within the handpiece housing such that a laser beam exiting the beam conditioning optic strikes the mirrors;
- a pair of galvanometers each for independently rotating one of the pair of mirrors;
- and
- a lens mounted in the housing onto which the mirrors reflect the laser beam and through which the laser beam is refracted through the housing output end and onto the target tissue, wherein the lens has a focal length and the pair of mirrors are located at a distance from the lens that is substantially equal to the focal length so that any variation in the size of a pattern projected onto the target tissue is minimized as the spacing between the housing and the target tissue is varied.
A surgical system for scanning a laser beam onto a target tissue comprising:
- a laser system that generates a laser beam;
- a handpiece housing connected to the laser system with an input end for receiving the laser beam;
- at least one scanning mirror that is rotatably mounted in the handpiece housing to scan the laser beam by reflection through an output end of the housing and across the target tissue, and
- a lens mounted in the housing for projecting the laser beam through the handpiece output end and onto the target tissue in a pattern parallel to an optical axis of the lens, wherein the lens has a focal length and the scanning mirror is located at a distance from the lens that is substantially equal to the focal length.
A surgical system for connection to a laser that generates a pulsed laser beam, wherein the surgical system scans the laser beam onto a target tissue, the surgical system comprising:
- a scanning mirror for reflecting a pulsed laser beam;
- a lens onto which the scanning mirror reflects the pulsed laser beam and through which the pulsed laser beam is refracted onto the target tissue;
- and
- a controller that operates the scanning mirror to scan the pulses in the laser beam to form a selected pattern of spots on the target tissue, the controller being responsive to a control panel that includes:
- a pattern selector for selecting the selected pattern from a plurality of predetermined patterns, and
- an overlap selector for selecting the relative spacing between the spots in the selected pattern.
Dependencies are inferred from the claim text.