Photodynamic Articular Joint Implants and Methods of Use

• US 20130046390A1
• Filed: 07/19/2012
• Published: 02/21/2013
• 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, Gausepohl, Thomas
• Granted Patent: US 9,144,442 B2
• Time in Patent Office: Days
• US Class Current: 623/23.43
• 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

Photodynamic devices for replacement of an articular head of a bone are provided. In an embodiment, a photodynamic device includes a photodynamic support member and an articular member attachable, either fixedly or removably, to the photodynamic support member and having a bearing surface. In an embodiment, the articular member includes a recess designed to receive the photodynamic support member. In an embodiment, the photodynamic support member includes an opening into which a shaft of the articular member can be inserted to attach the articular member to the photodynamic support member.

Claims

1. An articular bone repair device comprising:

a support member; and

an articular member having an articular part, a bearing surface disposed on the articular part, and an attachment part configured to complementarily engage the support member,

wherein the support member is sufficiently designed to reside within a cavity of a bone to anchor the articular member inside the cavity.

2. The articular bone repair device of claim 1, wherein the articular member is fixedly attached to the support member.

3. The articular bone repair device of claim 1, wherein the articular member is removably attached to the support member.

4. The articular bone repair device of claim 1, further comprising a recess in the articular member, the recess designed to receive the support member.

5. The articular bone repair device of claim 1, wherein the articular member has a shaft and the support member includes an opening into which the shaft of the articular member can be inserted to attach the articular member to the support member.

6. The articular bone repair device of claim 1, wherein the articular member has at least a portion that is cylindrical, tubular, rounded or ball-shaped.

7. The articular bone repair device of claim 1, wherein the bearing surface is configured to enter into an articular engagement with an articular head of a bone opposing the bone to be repaired.

8. The articular bone repair device of claim 1, wherein the support member is curable and/or photodynamic.

9. A joint repair device comprising:

a first bone repair device having a first support member attached to a first articular member having a first bearing surface; and

a second bone repair device having a second photodynamic support member attached to a second articular member having a second bearing surface complementary to and engaged with the first bearing surface.

10. The joint repair device of claim 9, wherein the first articular device and the second articular device are used in conjunction with a complementary surface other than another bone repair device.

11. The joint repair device of claim 9, wherein the complementary surface is an acetabular cup, a liner, or both.

12. The joint repair device of claim 9, wherein the first bearing surface is able to articulate with respect to the second bearing surface.

13. The joint repair device of claim 9, wherein the second bearing surface is able to articulate with respect to first bearing surface.

14. The joint repair device of claim 9, wherein the first support device is curable and/or photodynamic.

15. The joint repair device of claim 9, wherein the second support device is curable and/or photodynamic.

16. A system for restructuring or stabilizing a fractured or weakened head of a bone, the system comprising:

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

an expandable member releasably engaging the distal end of the delivery catheter, the expandable member 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 the head of the bone;

an articular member attached to the expandable member and having a bearing surface, wherein the expandable member is configured to receive the articular member; 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 light energy to initiate hardening of the at least one light sensitive liquid within the expandable member to form a photodynamic implant.

17. The system of claim 16, wherein the articular member has a shaft and the expandable member has an opening configured to receive the shaft of the articular member.

18. 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 expandable member releasably engaging the distal end of the delivery catheter, 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; and

an articular member configured to be attached to the expandable member and having a bearing surface.

19. The kit of claim 18, further comprising a plurality of expandable members having different sizes or shapes.

20. The kit of claim 18, further comprising a plurality of articular members having different sizes or shapes.

21. The kit of claim 18, further comprising a light source.

22. A method for repairing a fractured or weakened articular head of a bone, the method comprising:

removing the fractured or weakened head from the bone;

placing an expandable member removably attached to a distal end of a delivery catheter at least partially into an intramedullary cavity of the bone;

attaching an articular member having a bearing surface to the expandable member, wherein the expandable member is configured to receive the expandable member;

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

activating a light conducting fiber to cure the light sensitive liquid inside the expandable member; and

separating the expandable member and the articular member from the delivery catheter.

23. The method of claim 22, further comprising inserting the light conducting fiber into the expandable member.

24. The method of claim 22, further comprising removing the light conducting fiber from the expandable member after curing the light sensitive liquid inside the expandable member.

25. The method of claim 22, further comprising inserting a shaft of the articular member into an opening in the expandable member to attach the articular member to the expandable member.