TISSUE DILATION AND RESECTION SYSTEMS AND METHODS
A dilation assembly comprises an expandable and contractible main body having a corrugated outer surface, a guide cannula configured to be disposed through the main body to guide a movement of the main body, and an anchor configured to fix the main body in a target position.
1 . A method for coring tissue, the method comprising:
determining a location of a tissue lesion at a tissue site of a body;
navigating an instrument based on a location of the tissue lesion;
coupling the instrument to the tissue lesion or adjacent the tissue lesion;
configuring access to the tissue site, wherein the configuring access comprises at least dilating a portion of tissue along a path to the tissue site;
introducing a tissue resection device to the tissue site;
using the tissue resection device to create a core of tissue;
removing the core of tissue from the body to create a tissue cavity; and
analyzing the tissue core sample.
2 . The method of claim 1 , wherein the dilating a portion of tissue comprises using a dilation assembly configured to be inflated and deflated to adjust an outer radius of a main body of the assembly.
3 . The method of claim 2 , wherein the main body comprises a corrugated body.
4 . The method of claim 2 , wherein the main body comprises a ribs extending radially outwardly from the main body.
5 . The method of claim 4 , wherein at least one of the ribs comprises a radiused surface and a flat surface disposed opposite the radiused surface.
6 . The method of claim 2 , wherein the main body comprises concentric lumen.
7 . The method of claim 2 , wherein the main body comprises a distal end having a flat portion and a radiused portion.
8 . The method of claim 1 , wherein the dilating a portion of tissue comprises using a dilation balloon configured to be inflated and deflated to adjust an outer radius of the balloon.
9 . The method of claim 8 , wherein the dilation balloon comprises a corrugated main body.
10 . The method of claim 8 , wherein the dilation balloon comprises a main body having one or more ribs extending radially outward from the main body.
11 . The method of claim 10 , wherein one or more of the ribs comprises a radiused surface and a flat surface disposed opposite the radiused surface.
12 . The method of claim 8 , wherein the dilation balloon comprises concentric lumen.
13 . The method of claim 8 , wherein the dilation balloon comprises a distal end having a flat portion and a radius portion.
14 . A dilation assembly comprising:
an expandable and contractible main body having a corrugated outer surface;
a guide cannula configured to be disposed through the main body to guide a movement of the main body; and
an anchor configured to fix the main body in a target position.
15 . The dilation assembly of claim 14 , wherein the main body comprises concentric lumen.
16 . The dilation assembly of claim 14 , wherein the main body comprises a distal end having a flat portion and a radius portion.
17 . The dilation assembly of claim 14 , wherein the main body is corrugated by comprising a plurality of ribs extending radially outwardly from the main body.
18 . The dilation assembly of claim 17 , wherein one or more of the ribs comprises a radiused surface and a flat surface disposed opposite the radiused surface.
19 . The dilation assembly of claim 14 , wherein the dilation balloon comprises a distal end having a flat portion and a radius portion.
20 . A dilation assembly comprising:
an expandable and contractible main body comprising one or more ribs extending radially outwardly from the main body;
a guide cannula configured to be disposed through the main body to guide a movement of the main body; and
an anchor configured to fix the main body in a target position.
21 . The dilation assembly of claim 20 , wherein the main body comprises concentric lumen.
22 . The dilation assembly of claim 20 , wherein the main body comprises a distal end having a flat portion and a radius portion.
23 . The dilation assembly of claim 20 , wherein one or more of the ribs comprises a radiused surface and a flat surface disposed opposite the radiused surface.
24 . The dilation assembly of claim 20 , wherein the dilation balloon comprises a distal end having a flat portion and a radius portion.