Polymer filled hip fracture fixation device

• US 6,447,514 B1
• Filed: 03/07/2000
• Issued: 09/10/2002
• Est. Priority Date: 03/07/2000
• Status: Expired due to Fees

• Current Assignee: Zimmer Technology Incorporated (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Zimmer SA (Zimmer Biomet Holdings, Inc.)
• Inventors: Lozier, Antony J., Stalcup, Gregory C.
• Primary Examiner(s): Mancene, Gene
• Assistant Examiner(s): Priddy, Michael B.
• Application Number:
  US09/520,351
• Time in Patent Office: 917 Days
• Field of Search: 606/63, 623/16.11, 623/23.48, 623/23.61, 623/23.62, 623/23.58
• US Class Current: 606/63
• CPC Class Codes: A61B 17/1631 Special drive shafts, e.g. flexible shafts A61B17/1642, A61B17/164 take precedence
• CPC Class Codes: A61B 17/164 intramedullary
• CPC Class Codes: A61B 17/1668 for the upper femur A61B17/164 takes precedence
• CPC Class Codes: A61B 17/1721 for applying pins along or parallel to the axis of the femoral neck
• CPC Class Codes: A61B 17/175 for preparing the femur for hip prosthesis insertion
• 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 17/7258 with laterally expanding parts, e.g. for gripping the bone
• CPC Class Codes: A61B 17/742 having one or more longitudinal elements oriented along or parallel to the axis of the neck
• CPC Class Codes: A61B 17/746 the longitudinal elements coupled to a plate opposite the femoral head
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61B 2017/00238 Type of minimally invasive operation A61B2017/00805 takes precedence
• CPC Class Codes: A61B 2017/00287 Bags for minimally invasive surgery
• CPC Class Codes: A61B 2017/00557 inflatable A61B2017/22051 takes precedence
• CPC Class Codes: A61F 2002/2825 Femur
• CPC Class Codes: A61F 2002/30583 filled with hardenable fluid, e.g. curable in-situ
• CPC Class Codes: A61F 2210/0085 hardenable in situ, e.g. epoxy resins

Abstract

An orthopaedic implant includes a flexible bag; a structural support at least partially within the bag; and a hardened polymer within the bag. The orthopaedic implant is implanted within the bone by forming a cavity in the bone; inserting a flexible bag into the cavity; filling the bag with a polymer; and hardening the polymer.

Claims

1. An orthopaedic implant, comprising:

a flexible bag;

a structural support at least partially within said bag;

said structural support comprising a hollow injection tube for injecting said polymer; and

a hardenable polymer within said bag.

2. The orthopaedic implant of claim 1, wherein said hollow injection tube is comprised of metal.

3. The orthopaedic implant of claim 1, wherein said structural support extends from said bag.

4. The orthopaedic implant of claim 1, wherein said bag is expandable under pressure.

5. The orthopaedic implant of claim 1, wherein said bag comprises a porous bag allowing some of said polymer to pass therethrough.

6. The orthopaedic implant of claim 1, wherein said polymer comprises a curable polymer.

7. The orthopaedic implant of claim 6, wherein said polymer is curable with one of thermal energy, light energy, X-ray energy and a chemical catalyst.

8. The orthopaedic implant of claim 6, wherein said polymer comprises a bioresorbable polymer.

9. The orthopaedic implant of claim 6, wherein said polymer comprises polymethylmethacrylate.