Devices and Methods for Bone Restructure and Stabilization

• US 20130023886A1
• Filed: 07/19/2012
• Published: 01/24/2013
• Est. Priority Date: 07/19/2011
• Status: Active Grant

• Current Assignee: Illuminoss Medical, Inc.
• Original Assignee: Illuminoss Medical, Inc.
• Inventors: Rabiner, Robert A., Rader, Richard Scott
• Granted Patent: US 9,775,661 B2
• Time in Patent Office: Days
• US Class Current: 606/93
• CPC Class Codes: A61B 17/7097 Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants disc prostheses made of inflatable chambers or pockets filled with fluid A61F2/441; replacing the nucleus pulposus A61F2002/444
• CPC Class Codes: A61B 17/72 Intramedullary pins, nails or other devices A61B17/744 takes precedence
• CPC Class Codes: A61B 17/7233 with special means of locking the nail to the bone
• CPC Class Codes: A61B 17/7258 with laterally expanding parts, e.g. for gripping the bone
• CPC Class Codes: A61B 17/7275 with expanding cylindrical parts
• CPC Class Codes: A61B 17/7283 with special cross-section of the nail
• CPC Class Codes: A61B 17/74 Devices for the head or neck or trochanter of the femur trochanteric devices connected to the proximal part of an endoprosthetic femoral shaft A61F2/30739; endoprosthetic internal fixation devices for the head or neck of the femur A61F2/3601
• CPC Class Codes: A61B 17/748 with means for adapting the angle between the longitudinal elements and the shaft axis of the femur
• CPC Class Codes: A61B 17/8836 for heating, cooling or curing of bone cement or fluid fillers
• CPC Class Codes: A61B 17/8855 inflatable, e.g. kyphoplasty balloons
• CPC Class Codes: A61B 17/8858 laterally or radially expansible inflatable A61B17/8855
• CPC Class Codes: A61F 2/30724 Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving cavity
• CPC Class Codes: A61F 2/30749 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2/3804 for elbows
• CPC Class Codes: A61F 2002/30579 with mechanically expandable devices, e.g. fixation devices
• CPC Class Codes: A61F 2002/30581 having a pocket filled with fluid, e.g. liquid
• CPC Class Codes: A61F 2002/30583 filled with hardenable fluid, e.g. curable in-situ
• CPC Class Codes: A61F 2002/30754 Implants for interposition between two natural articular surfaces
• CPC Class Codes: A61F 2002/30934 Special articulating surfaces
• CPC Class Codes: A61F 2002/4631 the prosthesis being specially adapted for being cemented
• CPC Class Codes: A61N 2005/0612 : using probes penetrating tissue; interstitial probes
• CPC Class Codes: A61N 5/06 : using light
• CPC Class Codes: A61N 5/062 : Photodynamic therapy, i.e. excitation of an agent

Abstract

Devices and methods for restructure and stabilization of a fractured or weakened head of a bone are disclosed herein. A device includes a delivery catheter having a proximal end and a distal end, an inner void for passing at least one light sensitive liquid, and an inner lumen; an expandable member releasably engaging the distal end of the delivery catheter; and a light conducting fiber sized to pass through the inner lumen of the delivery catheter and into the expandable member. The expandable member moves from a deflated state to an inflated state when the light sensitive liquid is passed to the expandable member. When the light conducting fiber is in the expandable member, the light conducting fiber is able to disperse the light energy to initiate hardening of the light sensitive liquid within the expandable member to form a photodynamic implant.

Claims

1. A device for restructuring or stabilizing a fractured or weakened head of a bone comprising:

a delivery catheter having an elongated shaft with a proximal end, a distal end, and a longitudinal axis therebetween, an inner void for passing at least one light sensitive liquid, and an inner lumen;

an expandable member releasably engaging the distal end of the delivery catheter, the expandable member capable of moving from a deflated state to an inflated state when the at least one light sensitive liquid is passed to the expandable member, wherein the expandable member is sufficiently designed to be at least partially placed into a space within a head of a bone; and

a light conducting fiber sized to pass through the inner lumen of the delivery catheter and into the expandable member, wherein, when the light conducting fiber is in the expandable member, the light conducting fiber is able to disperse the light energy to initiate hardening of the at least one light sensitive liquid within the expandable member to form a photodynamic implant.

2. The device of claim 1, wherein the expandable member has a pear shape, bulb shape, dome shape, rounded shape, or elongated shape.

3. The device of claim 1, wherein the expandable member has a tapered elongated shape.

4. The device of claim 1, wherein the expandable member has a retrograde shape or an antegrade shape.

5. The device of claim 1, wherein the expandable member has a proximal end and a distal end, and the diameter of the proximal end of the expandable member is larger than the diameter of the distal end of the expandable member.

6. The device of claim 1, wherein the expandable member has a proximal end and a distal end, and the diameter of the distal end of the expandable member is larger than the diameter of the proximal end of the expandable member.

7. The device of claim 1, wherein the expandable member is sufficiently designed to be contained within a head of a bone.

8. The device of claim 1, wherein the expandable member includes a head section and a shaft section, and the expandable member is sufficiently designed such that the head section can be placed within a head of a bone and the shaft section can extend for a length into a shaft of the bone.

9. The device of claim 1, wherein the photodynamic implant is configured to engage with at least one bone fixation implant.

10. The device of claim 9, wherein the at least one bone fixation implant is a screw, rod, pin, nail, or combination thereof.

11. The device of claim 1, wherein the light conducting fiber includes a core and a cladding disposed on the core, and the cladding has at least one cut therein to expose the core and configured to alter the light exuded from the light conducting fiber.

12. A kit for repairing or stabilizing a fractured or weakened head of a bone comprising:

a light conducting fiber;

at least one light sensitive liquid;

a delivery catheter having an elongated shaft with a proximal end, a distal end, and a longitudinal axis therebetween, an inner void, and an inner lumen; and

an expandable member releasably engaging the distal end of the delivery catheter, wherein the expandable member is sufficiently designed to be at least partially placed into a space within a head of a bone, and wherein the delivery catheter has an inner void for passing the at least one light sensitive liquid into the expandable member, and an inner lumen for passing the light conducting fiber into the expandable member.

13. The kit of claim 12, further comprising a plurality of expandable members of different sizes or shapes.

14. The kit of claim 12, further comprising a light source.

15. A method for repairing or stabilizing a fractured or weakened head of a bone comprising:

placing an expandable member removably attached to a distal end of a delivery catheter at least partially into a space within a head of a bone;

infusing a light sensitive liquid into the expandable member through an inner lumen of the delivery catheter;

inserting a light conducting fiber into the expandable member through an inner void of the delivery catheter; and

activating the light conducting fiber to cure the light sensitive liquid inside the expandable member to form a photodynamic implant inside the head of the bone.

16. The method of claim 15, wherein the expandable member has a tapered elongated shape.

17. The method of claim 15, further comprising disposing a head section of the expandable member within a head of a bone and extending a shaft section of the expandable member for a length into the shaft of the bone.

18. The method of claim 15, further comprising engaging the photodynamic implant with at least one bone fixation implant.

19. The method of claim 15, wherein the at least one bone fixation implant is a screw, rod, pin, nail, or combination thereof

20. The method of claim 15, wherein the bone is a femur or a humerus.