Proximal anchors for bone fixation system

• US 20060195103A1
• Filed: 08/08/2005
• Published: 08/31/2006
• Est. Priority Date: 11/19/2001
• Status: Abandoned Application

• Current Assignee: Interventional Spine, Inc (Johnson & Johnson)
• Original Assignee: Interventional Spine, Inc (Johnson & Johnson)
• Inventors: Padget, Marty, Culbert, Brad S., von Hoffmann, Gerard, Cachia, Victor V.
• Application Number:
  US11/199,516
• Publication Number:
  US 20060195103A1
• Time in Patent Office: Days
• US Class Current: 606/328
• 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 17/746 the longitudinal elements coupled to a plate opposite the femoral head
• CPC Class Codes: A61B 17/8625 Shanks, i.e. parts contacting bone tissue
• CPC Class Codes: A61B 17/8665 Nuts
• CPC Class Codes: A61B 17/8685 comprising multiple separate parts
• CPC Class Codes: A61B 17/869 characterised by an open form, e.g. wire helix
• CPC Class Codes: A61B 17/8695 Washers surrounding screw head in plate hole A61B17/8047, between bone plate and bone A61B17/8028
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61B 2017/8655 with special features for locking in the bone

Abstract

Disclosed is a bone fixation device of the type useful for connecting soft tissue or tendon to bone or for connecting two or more bones or bone fragments together. The device comprises an elongate body having a distal anchor thereon. An axially moveable proximal anchor is carried by the proximal end of the fixation device, to accommodate different bone dimensions and permit appropriate tensioning of the fixation device.

Claims

1. A bone fixation device, comprising:

an elongate pin, having a proximal end, a distal end and a first retention structure;

at least one distal anchor carried by the elongate pin; and

a proximal anchor, axially moveable with respect to the elongate pin and comprising a second retention structure;

wherein at least a portion of the second retention structure is moveable between a first position and a second position, the second position being located closer to a longitudinal axis of the elongate pin as compared to the first position so as to engage at least a portion of the first retention portion and prevent proximal movement of the proximal anchor with respect to the elongate pin while the first position allows distal movement of the proximal anchor with respect to the elongate pin.

2-18. -18. (canceled)