Systems and methods for reducing fractured bone using a fracture reduction cannula with a side discharge port

• US 8,454,620 B2
• Filed: 12/07/2010
• Issued: 06/04/2013
• Est. Priority Date: 08/14/1998
• Status: Expired due to Fees

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon SARL (Medtronic Plc)
• Inventors: Ralph, Christopher R., Layne, Richard W., Sand, Paul M., Scribner, Robert M., Reiley, Mark A.
• Primary Examiner(s): Ramana, Anu
• Application Number:
  US12/961,690
• Publication Number:
  US 20110137319A1
• Time in Patent Office: 910 Days
• Field of Search: 606/86.R, 606 92- 94, 606191-194, 606/198, 604/104, 604/164.01, 604/164.03, 604/164.04, 604/164.11, 604/166.01, 604/264
• US Class Current: 606/92
• CPC Class Codes: A61B 17/1686 for the hand or wrist
• CPC Class Codes: A61B 17/3468 for implanting or removing devices, e.g. prostheses, implants, seeds, wires devices for implanting seeds A61M37/0069
• CPC Class Codes: A61B 17/3472 for bones, e.g. intraosseus injections
• CPC Class Codes: A61B 17/8805 for introducing fluid filler into bone or extracting it A61B17/7097, A61B17/8833 take precedence
• CPC Class Codes: A61B 17/8855 inflatable, e.g. kyphoplasty balloons
• CPC Class Codes: A61B 17/8866 for gripping or pushing bones, e.g. approximators joint distractors A61B17/025
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61B 50/33 Trays
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers
• CPC Class Codes: A61F 2/4601 for introducing bone substitute, for implanting bone graft implants or for compacting them in the bone cavity

Abstract

An elongated shaft is sized and configured to establish an access path to bone having an interior volume occupied, at least in part, by cancellous bone. The elongated shaft includes a generally closed distal end portion and a side opening spaced from the closed distal end. A first tool is sized and configured to be selectively inserted into the shaft and selectively removed from the shaft. The tool includes a region that, when the first tool is inserted into the shaft, is capable of being aligned with and advanced through the side opening to project outside the side opening and contact cancellous bone. A second tool is sized and configured, upon removal of the first tool from the shaft, to introduce into the shaft a bone filling material for discharge through the side opening into the cancellous bone contacted by the first tool.

Claims

1. A system comprising

an elongated shaft sized and configured to establish an access path to bone having an interior volume occupied, at least in part, by cancellous bone, the elongated shaft including a distal end portion configured to engage an interior surface of cortical bone and a side opening positioned towards a fracture,

a first tool sized and configured to be selectively inserted into the shaft and selectively removed from the shaft, the first tool including an outer catheter body with a distal end section, an inner elongated body extending at least partially within the outer catheter body and beyond the distal end section, and an expandable body configured to receive radio opaque fluid coupled to both the outer catheter body and the inner elongated body, wherein the expandable body is capable of being selectively aligned with and advanced through the side opening to project outside the side opening and contact cancellous bone, when the first tool is selectively inserted into the shaft, the first tool further comprises at least one radiopaque marker and wherein the selective alignment of the expandable body with the side opening is determinable by the location of the radiopaque marker relative to the side opening, and

a second tool sized and configured, upon removal of the first tool from the shaft, to introduce into the shaft a bone filling material for discharge through the side opening into the cancellous bone.

2. The system of claim 1 wherein the inner elongated body includes a catheter.

3. The system of claim 1 wherein the distal end portion is solid.

4. The system of claim 1 wherein the distal end portion is hollow and sized to receive at least a portion of the first tool.

5. The system of claim 1 wherein contact between the expandable body and the cancellous bone modifies cancellous bone for introduction of bone filling material.

6. The system of claim 5 wherein the bone filling material comprises bone cement.

7. The system of claim 1 wherein the expandable body is coupled at a first end to the distal end section of the outer catheter body and is coupled at a second end to a distal end section of the inner elongated body.

8. The system of claim 1 wherein the expandable body is inflatable.