Systems and methods for forming a cavity in cancellous bone
AssigneeKyphon SARL
InventorsRobert M. Scribner, Michael L. Reo
Life of this patent
Estimating the term…
Abstract
A cavity creating device having a cavity creating axis is introduced through a percutaneous access path into a cancellous bone volume, e.g., within a vertebral body. The cavity creating device is manipulated to form a cavity in the cancellous bone volume. The manipulation includes deflecting the cavity creating device along the cavity creating axis relative to the axis of the access path. A material, such as bone cement, can be conveyed into the cavity.
Claims13
1-14. (canceled)
An instrument for forming a cavity in cancellous bone comprising:
- a generally straight catheter tube having a proximal end, a distal end, a first lumen and a second lumen;
- an expandable structure disposed at the distal end of the catheter tube, the expandable structure having a distal end and communicating with the first lumen of the catheter tube;
- and
- a generally straight stiffening stylet inserted into the second lumen of the catheter tube;
- wherein the second lumen extends through the first lumen of the catheter tube to the distal end of the expandable structure.
The instrument according to claim 1, wherein the expandable structure is made from an elastic material.
The instrument according to claim 1, wherein the stylet is removable from the second lumen.
The instrument according to claim 1, wherein the stylet is formed from metal.
The instrument according to claim 1, wherein the stylet is formed from plastic.
An instrument for forming a cavity in cancellous bone comprising:
- a generally straight outer catheter tube including a distal end and a first lumen;
- a generally straight inner catheter tube extending within the outer catheter tube and including a distal end and a second lumen, wherein the distal end of the inner catheter tube extends beyond the distal end of the outer catheter tube;
- an expandable structure communicating with the first lumen;
- and
- a generally straight stiffening stylet sized for insertion into the second lumen.
Dependencies are inferred from the claim text.