Systems and methods for reducing fractured bone using a fracture reduction cannula

• US 7,153,306 B2
• Filed: 10/25/2001
• Issued: 12/26/2006
• Est. Priority Date: 10/25/2000
• Status: Expired due to Fees

• Current Assignee: Orthophoenix, LLC (Marathon Patent Group, Inc.)
• Original Assignee: Kyphon Incorporated
• Inventors: Layne, Richard W, Ralph, Christopher R, Reiley, Mark A, Sand, Paul M, Scribner, Robert M
• Primary Examiner(s): Robert, Eduardo C.
• Assistant Examiner(s): RAMANA, ANURADHA
• Application Number:
  US10/001,937
• Publication Number:
  US 20020099385A1
• Time in Patent Office: 1,888 Days
• Field of Search: 606/86, 606/91, 606/92, 606/93, 606/94, 606/95, 606/96, 606/191, 606/192, 606/194, 606/108, 606/80, 606/170, 606/180, 606/198, 623/7, 623/8, 623/66, 623/17.11, 623/17.12, 623/17.13, 623/17.14, 623/17.15, 623/17.16, 623/23.62, 604/164.03, 604/164.04, 604/164.11, 604/164.01, 604/166.01, 604/264, 604/104
• 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

Systems and methods provide for the fixation of osteoporotic and non-osteoporotic long bones, especially Colles'"'"' fractures. A cannula having a circumferential opening is inserted into cancellous bone and directed such that the circumferential opening faces the fracture. The cannula is further adapted to receive an expandable structure, the expandable structure being inserted through the cannula until it is in registration with the circumferential opening. The expandable structure is expanded through the circumferential opening into cancellous bone and toward the fracture. The expansion of the expandable structure through the circumferential opening toward the fracture causes compression of cancellous bone and moves fractured cortical bone, thus creating a cavity proximal to the fracture. The cavity is then filled with a flowable bone filling material and the material allowed to harden.

Claims

1. A method comprising:

selecting a bone for treatment having cortical bone enclosing a cancellous bone volume;

providing a cannula including a side wall defining an internal bore aligned along an axis, a distal region, an opening in the side wall, the opening extending partially about the side wall and being elongated along the axis and having a distal terminus, and a bone engaging structure on the distal region of the cannula spaced, at least in part, distally of the distal terminus of the opening to anchor the distal region in cortical bone;

introducing the cannula distal region first into the bone;

placing the bone engaging structure into engagement with an interior surface of the cortical bone to anchor the distal region in cortical bone;

inserting an expandable structure through the internal bore of the cannula into registration with the opening; and

expanding the expandable structure from within the internal bore through the opening in the side wall into contact with cancellous bone.

2. A method according to claim 1, wherein expanding the expandable structure compacts cancellous bone.

3. A method according to claim 1, wherein expanding the expandable structure forms a cavity in cancellous bone.

4. A method according to claim 3 and further including flowing a volume of filling material into the cavity.

5. A method comprising:

selecting a bone for treatment having cortical bone enclosing a cancellous bone volume;

providing a cannula including a side wall defining an internal bore aligned along an axis, a distal region, a distal opening in the distal region communicating with the internal bore to accommodate passage of a guide pin, and an opening in the side wall extending partially about the side wall and being elongated along the axis;

introducing a guide pin into the bone;

introducing the cannula distal region first into the bone by passing the guide pin through the distal opening and the bore;

withdrawing the guide pin;

inserting an expandable structure through the internal bore of the cannula into registration with the opening in the side wall; and

expanding the expandable structure from within the internal bore through the opening in the side wall into contact with cancellous bone.

6. A method according to claim 5, wherein expanding the expandable structure compacts cancellous bone.

7. A method according to claim 5, wherein expanding the expandable structure forms a cavity in cancellous bone.

8. A method according to claim 7, and further including flowing a volume of filling material into the cavity.

9. A method comprising:

selecting a bone for treatment having cortical bone enclosing a cancellous bone volume;

providing a cannula including a side wall defining an internal bore aligned along an axis, a distal end, and an opening in the side wall, the opening extending partially about the side wall and being elongated along the axis and including a distal terminus, the internal bore terminating at the distal terminus;

introducing the cannula distal region first into the bone;

inserting an expandable structure through the internal bore of the cannula into registration with the opening;

expanding the expandable structure from within the internal bore through the opening in the side wall into contact with cancellous bone to form a cavity in cancellous bone; and

flowing a volume of filling material into the cavity.

10. A method according to claim 9, wherein expanding the expandable structure compacts cancellous bone.