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US 2014/0058432 A1Published application
Instruments and methods for forming a cavity
AssigneeKyphon SARL
InventorsRobert M. Scribner, Michael L. Rea
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.
Claims21
1-14. (canceled)
An instrument comprising:
- a catheter tube having a proximal end, a distal end, a first portion defining a first lumen, a second portion defining a second lumen, the first and second lumens being coaxial and having a circular cross-section;
- and
- an expandable structure being disposed at the distal end of the catheter tube and having a proximal end, a distal end, and an outer surface and, the proximal end of the expandable structure is secured to the first portion and the distal end of the expandable structure is secured to the second portion, wherein the second portion extends through the first lumen of the catheter tube to the distal end of the expandable structure.
An instrument comprising:
- an outer catheter tube including a distal end and a first lumen having a substantially circular cross-sectional configuration;
- an inner catheter tube extending within the outer catheter tube and including a distal end and a second lumen having a circular cross-sectional configuration, the first and second lumens being coaxial and the distal end of the inner catheter tube extending beyond the distal end of the outer catheter tube;
- and
- an expandable structure communicating with the first lumen, the expandable structure having an outer surface, a proximal end secured to the first lumen, a distal end secured to a distal end of the second lumen wherein no portion of the outer catheter tube protrudes beyond the expandable structure such that the entire outer surface of the expandable structure is continuous.
1 more element
A method for creating a cavity in an interior body region of a patient, comprising:
- providing an instrument comprising:
- a catheter tube having a proximal end, a distal end, a first portion defining a first lumen, a second portion defining a second lumen, the first and second lumens being coaxial and having a circular cross-section, and
- an expandable structure being disposed at the distal end of the catheter tube and having a proximal end, a distal end, and an outer surface and, the proximal end of the expandable structure is secured to the first portion, the distal end of the expandable structure is secured to the second portion and the second portion extends through the first lumen of the catheter tube to the distal end of the expandable structure;
- positioning the expandable structure within the interior body region with the expandable structure in a collapsed configuration;
- and
- moving the expandable structure from the collapsed configuration to an expanded configuration to create the cavity.
3 more elements
Dependencies are inferred from the claim text.