SYSTEMS AND METHODS FOR TISSUE TREATMENT WITH AN ASYMMETRIC BEAM
Systems and method for tissue treatment are provided. The systems include an electromagnetic radiation (EMR) source configured to generate a treatment EMR beam, a plurality of optical elements configured to shape and focus the treatment EMR beam to a focal point within a tissue, a window assembly located down-beam from the plurality of optical elements and configured to contact the tissue, and a controller configured to control the EMR source to generate the treatment EMR beam during a treatment procedure. The first axicon and the second axicon are configured to shape the treatment EMR beam such that the shaped EMR beam has a transverse asymmetric energy profile. The plurality of optical elements include a first axicon and a second axicon, and the window assembly is configured to transmit the treatment EMR beam.
1 . A system, comprising:
an electromagnetic radiation (EMR) source configured to generate a treatment EMR beam;
a plurality of optical elements configured to shape and focus the treatment EMR beam to a focal point within a tissue, the plurality of optical elements including a first axicon and a second axicon;
a window assembly located down-beam from the plurality of optical elements and configured to contact the tissue, the window assembly being configured to transmit the treatment EMIR beam; and
a controller configured to control the EMR source to generate the treatment EMR beam during a treatment procedure,
wherein the first axicon and the second axicon are configured to shape the treatment EMR beam such that the shaped EMIR beam has a transverse asymmetric energy profile.
2 . The system of claim 1 , wherein the transverse asymmetric energy profile is at least partially annular.
3 . The system of claim 2 , wherein the transverse asymmetric energy profile is a crescent.
4 . The system of claim 1 , wherein the transverse asymmetric energy profile is a substantially elongate ring.
5 . The system of claim 1 , wherein the first axicon and the second axicon are misaligned relative to each other.
6 . The system of claim 5 , wherein the first axicon is translated relative to the second axicon.
7 . The system of claim 5 , wherein the first axicon is rotated relative to the second axicon.
8 . A method, comprising:
contacting a tissue with a window assembly of a treatment device;
generating a treatment electromagnetic radiation (EMR) beam with an EMR source in electronic communication with the treatment device; and
shaping and focusing the treatment EMR beam toward the tissue with a plurality of optical elements to create one or more treatment zones on the tissue, the plurality of optical elements shaping the beam such that the shaped EMR beam has a transverse asymmetric energy profile.
9 . The method of claim 8 , wherein the plurality of optical elements include a first axicon and a second axicon being misaligned relative to an optical axis therethrough.
10 . The method of claim 9 , wherein the first axicon is translated relative to the second axicon.
11 . The method of claim 9 , wherein the first axicon is rotated relative to the second axicon.
12 . The method of claim 9 , further comprising collimating the treatment EMR beam with a collimating lens.
13 . The method of claim 12 , wherein the first axicon and second axicon are misaligned relative to the collimating lens.
14 . The method of claim 8 , wherein the one or more treatment zones at least partially annular.
15 . The method of claim 14 , wherein the one or more treatment zones are crescent-shaped.
16 . The method of claim 8 , wherein the one or more treatment zones are a substantially elliptical ring.
17 . The method of claim 16 , wherein the one or more treatment zones are substantially elliptical rings having a major axis aligned with a direction of tightening.
18 . The method of claim 8 , further comprising pulsing the treatment EMR beam while moving the treatment device relative to the tissue to create the one or more treatment zones.