FILAMENT AND CAP SYSTEMS AND METHODS FOR THE FIXATION OF BONE FRACTURES

• US 20090306718A1
• Filed: 06/24/2009
• Published: 12/10/2009
• Est. Priority Date: 10/18/2001
• Status: Abandoned Application

• Current Assignee: OrthoIP, LLC
• Original Assignee: OrthoIP, LLC
• Inventors: Tipirneni, Kishore, Vassello, Wayne
• Application Number:
  US12/491,132
• Publication Number:
  US 20090306718A1
• Time in Patent Office: Days
• US Class Current: 606/263
• CPC Class Codes: A61B 17/62 Ring frames, i.e. devices extending around the bones to be positioned A61B17/6433 , A61B17/66 take precedence
• CPC Class Codes: A61B 17/683 comprising bone transfixation elements, e.g. bolt with a distal cooperating element such as a nut
• CPC Class Codes: A61B 17/685 Elements to be fitted on the end of screws or wires, e.g. protective caps
• CPC Class Codes: A61B 17/7053 with parts attached to bones or to each other by flexible wires, straps, sutures or cables
• CPC Class Codes: A61B 17/7208 Flexible pins, e.g. ENDER pins
• CPC Class Codes: A61B 17/7225 for bone compression
• CPC Class Codes: A61B 17/7233 with special means of locking the nail to the bone
• CPC Class Codes: A61B 17/7291 for small bones, e.g. in the foot, ankle, hand or wrist
• 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 17/744 the longitudinal elements coupled to an intramedullary nail
• CPC Class Codes: A61B 17/746 the longitudinal elements coupled to a plate opposite the femoral head
• CPC Class Codes: A61B 17/8605 Heads, i.e. proximal ends projecting from bone
• CPC Class Codes: A61B 17/861 specially shaped for gripping driver
• CPC Class Codes: A61B 17/8625 Shanks, i.e. parts contacting bone tissue
• CPC Class Codes: A61B 17/864 hollow, e.g. with socket or cannulated
• CPC Class Codes: A61B 17/8685 comprising multiple separate parts
• CPC Class Codes: A61B 17/8863 Apparatus for shaping or cutting osteosynthesis equipment by medical personnel
• CPC Class Codes: A61B 17/8869 Tensioning devices
• CPC Class Codes: A61B 17/8877 characterised by the cross-section of the driver bit
• CPC Class Codes: A61B 17/92 Impactors or extractors, e.g. for removing intramedullary devices insertion or extraction of artificial joints A61F2/4603

Abstract

A lagwire system and method for facilitating the fixation of bone fractures is disclosed. The lagwire system includes an anchor component, a wire, a threaded sleeve, a tubular sleeve and a cap. The threaded sleeve, tubular sleeve and cap are operable to slide along the length of the wire. The threaded sleeve and tubular sleeve may be integrally formed. The wire may comprise a filament to allow at least some movement of the bone fractures. The cap may comprise a tapered interior operable to restrict further movement of the cap relative to the wire.

Claims

1. A lagwire system, comprising:

an anchor component operable to be inserted into a first object, said anchor component comprising a tip and a helical thread;

a flexible wire having a first end and a second end, wherein said first end of said wire is coupled to said anchor component;

a tubular sleeve operable to be inserted over said flexible wire; and

a cap operable to be inserted over said flexible wire.

2. The system of claim 1, wherein said tubular sleeve is substantially flexible.

3. The system of claim 1, wherein said tubular sleeve is substantially inflexible.

4. The system of claim 1, wherein said tubular sleeve is comprised of a plastic material.

5. The system of claim 4, wherein said plastic material is polyetherketone.

6. The system of claim 1, wherein said tubular sleeve comprises a substantially smooth exterior surface.

7. The system of claim 1, wherein at least a portion of said tubular sleeve is threaded.

8. The system of claim 1, further comprising a threaded sleeve operable to be inserted over said flexible wire.

9. The system of claim 8, wherein said threaded sleeve is operable to mate with said anchor component.

10. The system of claim 8, wherein said threaded sleeve comprises a locking mechanism to affix said sleeve at a desired position along a length of said wire.

11. The system of claim 8, wherein said threaded sleeve comprises a Christmas tree configuration.

12. A system for providing treatment to a first bone portion and a second bone portion comprising:

an anchor component operable to be inserted into a first object, said anchor component comprising a tip and a helical thread;

a first flexible wire and a second flexible wire, wherein said first flexible wire is coupled to said anchor component;

a filament disposed between said first flexible wire and said second flexible wire; and

a cap operable to be inserted over said second flexible wire.

13. The system of claim 12, wherein at least a portion of said filament comprises at least one of a fastener, a ligament, a tendon and a suturing material.

14. The system of claim 12, wherein said filament is a single-thread material.

15. The system of claim 12, wherein said filament is a multi-thread material.

16. The system of claim 12, further comprising an attachment means to couple said filament to said wire.

17. The system of claim 16, further comprising an eyelit to couple said filament to said wire.

18. The system of claim 12, wherein said filament is configured to permit at least some movement of said first bone portion relative to said second bone portion.

19. A cap for restricting movement of a wire, said cap comprising:

an outside surface having cutting threads; and

,

an inside surface that is operable to restrict movement of said cap relative to said wire.

20. The cap of claim 19, wherein said inside surface is a blind hole, wherein said blind hole is operable to restrict backward movement of said wire relative to said cap.

21. The cap of claim 19, wherein said inside surface has a tapered configuration, wherein said tapered configuration is operable to lock onto said wire and restrict forward and backward movement of said cap relative to said wire.

22. The cap of claim 21, further comprising protrusions operable to clamp down on said wire and restrict movement.

23. The cap of claim 22, wherein said protrusions are selected from a group comprising teeth and fingers.