Tissue visualization and manipulation system
A system comprises a deployment catheter defining at least one lumen therethrough and a hood having a low profile delivery configuration and an expanded deployed configuration defining an open area of the hood. The system further comprises a laser generator sized and shaped to be passed through the lumen of the deployment catheter. The laser generator is configured to generate a pattern on tissue surface that is distal to the hood. The system further comprises a visualization element disposed within or adjacent to the open area of the hood for visualizing the tissue surface.
1 . (canceled)
2 . A system comprising:
a deployment catheter defining at least one lumen therethrough;
a hood having a low profile delivery configuration and an expanded deployed configuration defining an open area of the hood; and
a laser generator sized and shaped to be passed through the lumen of the deployment catheter, the laser generator configured to generate a pattern on tissue surface that is distal to the hood; and
a visualization element disposed within or adjacent to the open area of the hood for visualizing the tissue surface.
3 . The system of claim 2 , wherein the pattern is a ring.
4 . The system of claim 3 , wherein a diameter of the ring is less than a diameter of a distal end of the hood.
5 . The system of claim 2 , wherein the laser generator is configured to mark the tissue surface.
6 . The system of claim 2 , wherein the laser generator is configured to ablate the tissue surface.
7 . A medical instrument comprising:
an elongated member having a distal end;
an energy radiation instrument supported by the elongated member, the energy radiation instrument configured to direct energy at tissue in a predetermined pattern; and
a visualization instrument supported by the elongated member, the visualization instrument configured to capture imagery of tissue while energy is directed from the energy radiation instrument at the tissue.
8 . The medical instrument of claim 7 , wherein the elongated member comprises a catheter with a lumen therethrough, the lumen configured to pass the energy radiation instrument therethrough.
9 . The medical instrument of claim 8 , wherein the catheter comprises a hood at the distal end.
10 . The medical instrument of claim 7 , wherein the predetermined pattern is a circuitous pattern.
11 . The medical instrument of claim 7 , wherein the predetermined pattern is a ring.
12 . The medical instrument aim 7 , wherein the energy radiation instrument is a laser.
13 . The medical instrument of claim 7 , wherein the energy radiation instrument is configured to ablate the tissue.
14 . The medical instrument of claim 7 , wherein the energy radiation instrument is configured to mark the tissue.
15 . A method comprising:
positioning a medical instrument adjacent a tissue;
visualizing the tissue with a visualization element of the medical instrument; and
directing energy at the tissue with an energy radiation instrument of the medical instrument, the energy radiation instrument configured to direct the energy in a predefined pattern to create the predefined pattern on the tissue.
16 . The method of claim 15 , further comprising, with the energy radiation instrument, creating the predefined pattern on the tissue at a region that is a predetermined distance from a first anatomical feature.
17 . The method of claim 16 , further comprising, with the energy radiation instrument, creating the predefined pattern on the tissue at a region that is a predetermined distance from a second anatomical feature.
18 . The method of claim 16 , wherein the first anatomical feature is an ostium.
19 . The method of claim 16 , wherein the energy radiation instrument comprises a laser ring generator.
20 . The method of claim 19 , wherein the predefined pattern is a ring with a diameter that is less than a diameter of a distal end of a hood at a distal end of the medical instrument.
21 . The method of claim 19 , further comprising, ablating the tissue with the energy radiation instrument in the predefined pattern.