Graft fixation

Patent metadata

Field	Value
Publication number	US-9770534-B2
Application number	US-59511408-A
Country	US
Kind code	B2
Filing date	Apr 16, 2008
Priority date	Apr 19, 2007
Publication date	Sep 26, 2017
Grant date	Sep 26, 2017

Abstract

The present disclosure relates to an anchor for fixating a tissue graft to bone. The anchor includes a through hole extending an entire length of the anchor and a polymer composition having shape memory qualities. Other anchors and methods for fixating a tissue graft to bone are also disclosed.

First claim

What is claimed is:

1. An anchor for fixating a tissue graft to bone, the anchor comprising:
an elongated body disposable into a bone tunnel in a bone and made from a shape-memory material, the elongated body comprising:
a non-tapered proximal portion, comprising:
a first concave outer surface extending longitudinally along the entire non-tapered proximal portion to define a first longitudinal channel along a first side of the elongated body wherein the first concave outer surface has a shape memory configured to compress a first tissue graft end portion against the bone tunnel wall in response to receiving a shape memory activation energy;
a first convex outer surface extending longitudinally along an entire second side of the non-tapered portion and configured to engage a bone tunnel wall of the bone when the elongated body is inserted into the bone tunnel; and

a tapered distal portion extending longitudinally from the non-tapered proximal portion wherein the-first concave outer surface extends longitudinally along the entire tapered distal portion.

2. The anchor of 1 , further comprising a cavity extending longitudinally into the elongated body from a proximal end of the elongated body, the cavity shaped to receive a delivery device and/or a heating device.

3. The anchor of claim 2 , wherein the non-tapered proximal portion further comprises:
a second concave outer surface extending longitudinally along the entire non-tapered proximal portion to define a second longitudinal channel along a third side of the elongated body opposite the first side of the elongated body wherein the second concave outer surface has a shape memory configured to compress a second tissue graft end portion against the bone tunnel wall in response to receiving the shape memory activation energy; and
a second convex outer surface extending longitudinally along an entire fourth side of the non-tapered portion opposite the second side of the non-tapered portion and configured to engage the bone tunnel wall of the bone when the elongated body is inserted into the bone tunnel.

4. The anchor of claim 3 , wherein the second concave outer surface extends longitudinally along the entire tapered distal portion.

Assignees

• Montes De Oca Balderas Horacio
• Brown Malcolm
• Howling Graeme
• Fenwick Steve
• Cotton Nicholas
• Brumfield David
• Smith & Nephew Inc

Inventors

• Montes De Oca Balderas Horacio
• Brown Malcolm
• Howling Graeme
• Fenwick Steve
• Cotton Nicholas
• Brumfield David

Classifications

• A61F2/0811

  Fixation devices for tendons or ligaments · CPC title

• A61L2400/16

  Materials with shape-memory or superelastic properties · CPC title

• A61F2002/0858

  Fixation of tendon or ligament between anchor and bone, e.g. interference screws, wedges · CPC title

• A61F2210/0014

  using shape memory or superelastic materials, e.g. nitinol · CPC title

• A61F2002/0852

  Fixation of a loop or U-turn, e.g. eyelets, anchor having multiple holes · CPC title