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US 2019/0314085 A1Published application
Diffractive optics for emr-based tissue treatment
AssigneeAvava, Inc.
InventorsCharles Holland Dresser, Rajender Katkam, Jayant Bhawalkar
Life of this patent
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Abstract
A method includes generating a plurality of primary beams from a laser beam, and generating, from a primary beam one or more secondary beams. The method also includes focusing the first secondary beam to a first focal region in the target tissue and the second secondary beam to a second focal region in the target tissue. The first focal region and the second focal region can be located at different depths in the target tissue.
Claims22
A method comprising:
- generating a plurality of primary beams from a laser beam;
- generating, from at least a first primary beam of the plurality of primary beams, a first secondary beam and a second secondary beam;
- and
- focusing the first secondary beam to a first focal region in a target tissue and the second secondary beam to a second focal region in the target tissue, wherein the first focal region is located at a first depth from a surface of the target tissue, and the second focal region is located at a second depth different from the first depth of the surface of the target tissue.
1 more element
A system comprising:
- a diffractive beam splitter configured to receive a laser beam and produce a plurality of primary beams;
- a diffractive element located down-beam from the diffractive beam splitter, the diffractive element configured to receive at least a first primary beam of the plurality of primary beams and generate at least a first secondary beam and a second secondary beam;
- and
- a focusing element located down-beam from the diffractive element, the diffractive element being configured to focus the first secondary beam to a first focal region in a target tissue and focus the second secondary beam to a second focal region in the target tissue,
- wherein the first focal region is located at a first depth from a surface of the target tissue, and the second focal region is located at a second depth different from the first depth of the surface of the target tissue.
2 more elements
A system comprising:
- a diffractive element configured to receive a laser beam including a characteristic wavelength and separate the laser beam into one or more beamlets having the single wavelength;
- and
- a focusing optical element located down-beam from the diffractive element and having a first numerical aperture, the focusing optical element configured to focus a first beamlet of the one or more beamlets to a focal volume beneath a tissue surface,
- wherein the focal volume has an elongated length that extends from a first depth to a second depth in the tissue, and an intensity of the first beamlet is above a predetermined therapeutic threshold in the focal volume.
1 more element
A system comprising:
- an articulating arm configured to receive from a laser source a laser beam at a first end and deliver the laser beam out of a second end;
- a diffractive beam splitter located down-beam from the second end of the articulating arm, the diffractive beam splitter configured to split the laser beam into a plurality of beams;
- a focusing optical element located down-beam from the diffractive beam splitter, the focusing optical element configured to focus the plurality of beams to an array of focuses;
- a window located down-beam from the focusing optical element and up-beam from the array of focuses, the window configured to contact a target tissue and transmit the plurality of beams;
- and
- a first stage configured to translate the second end of the articulating arm, the diffractive beam splitter, and the focusing optical element relative the window in a first direction that is generally perpendicular to an optical axis associated with the plurality of beams.
3 more elements
A method comprising:
- receiving, by an articulating arm at a first end, a laser beam;
- delivering, by a second end of the articulating arm, the laser beam;
- splitting, by a diffractive beam splitter located down-beam from the second end of the articulating arm, the laser beam into a plurality of beams;
- focusing, by a focusing optical element located down-beam from the diffractive beam splitter, the plurality of beams to an array of focuses;
- transmitting the plurality of beams through a window configured to contact a target tissue;
- and
- translating, by a first stage, the second end of the articulating arm, the diffractive beam splitter, and the focusing optical element relative the window in a first direction that is generally perpendicular to an optical axis associated with the plurality of beams.
4 more elements
A method comprising:
- generating a laser beam;
- generating, from the laser beam, a first secondary beam and a second secondary beam;
- focusing the first secondary beam to a first focal region in a target tissue and the second secondary beam to a second focal region in the target tissue, wherein the target tissue comprises a first tissue layer proximal to a surface of the tissue and a second tissue layer beneath the first tissue layer and the first focal region and the second focal region are located within the second tissue layer;
- and
- controlling, using a controller, at least one laser beam parameter to introduce a therapeutic effect within the first focal region and the second focal region without introducing a deleterious effect within the first tissue layer.
2 more elements
Dependencies are inferred from the claim text.