Systems and methods for removing tissue from a cancellous bone volume
A cavity forming structure is introduced through a percutaneous access path into a selected bone having an interior volume occupied, at least in part, by cancellous bone, e.g., a vertebral body. A cavity is formed in the cancellous bone volume by manipulation of the cavity forming structure. Tissue is removed from within the cavity through the percutaneous access path.
1 . A method comprising
introducing a cavity forming structure through a percutaneous access path into a selected bone having an interior volume occupied, at least in part, by cancellous bone,
forming a cavity in the cancellous bone volume by manipulation of the cavity forming structure, and
removing tissue from within the cavity through the percutaneous access path.
2 . A method according to claim 1
wherein tissue is removed through a lumen in the cavity forming structure.
3 . A method according to claim 1
further including fixation of the bone after removal of tissue.
4 . A method according to claim 1
selecting a vertebral body as the bone to be treated.
5 . A method according to claim 1
wherein the cavity forming structure comprises an expandable body that, by expansion, forms the cavity.
6 . A method according to claim 5
wherein the expandable body expands by inflation.
7 . A method according to claim 1
wherein the cavity forming structure includes an expandable mesh structure that, by expansion, forms the cavity.
8 . A method according to claim 1
wherein the tissue removed includes biological components.
9 . A method according to claim 1
wherein the tissue removed includes therapeutic biological components.
10 . A method according to claim 1 ,
wherein the tissue removed includes bone marrow.
11 . A method according to claim 1
wherein the tissue removed includes red blood cells.
12 . A method according to claim 1
wherein the tissue removed includes bone cells.
13 . A method according to claim 1
wherein the tissue removed includes immune-? cells.
14 . A method according to claim 1
further including using the tissue removed for a diagnostic purpose.
15 . A method according to claim 1
further including using the tissue removed for a therapeutic purpose.
16 . A method according to claim 1
wherein the selected bone comprises a vertebral body.
17 . A method according to claim 1
wherein the selected bone comprises a pelvis.
18 . A method according to claim 1
wherein the selected bone comprises a distal radius.
19 . A method according to claim 1
wherein removing tissue from within the cavity includes conveying a biological rinse liquid into the cavity to loosen biological components.
20 . A method according to claim 1
wherein removing tissue from within the cavity includes aspiration.