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US 10,307,190 B2Granted
Arthrodesis devices for generating and applying compression within joints
AssigneeArthrex, Inc.
InventorsAdam Garlock, William Michael Karnes, Matthew Fonte, Matthew Palmer, Robert Devaney, Alexander Delmonaco, Kaitlyn Nealon
Life of this patent
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Abstract
Arthrodesis devices and arthrodesis procedures are disclosed herein. In an embodiment, an arthrodesis device includes a shape memory material connecting member attached to two points of fixation.
Claims21
An arthrodesis device for performing tibio-talo-calcaneal (TTC) joint fusions, comprising:
- a nail body extending along a longitudinal axis between a proximal portion and a distal portion;
- a proximal slider housed inside the proximal portion;
- a distal slider housed inside the distal portion;
- a Nitinol rod connected to both the proximal slider and the distal slider;
- a first opening located within the proximal portion of the nail body and configured to receive a tibial screw;
- a second opening located within the distal portion of the nail body and configured to receive a talar screw;
- a third opening located within the distal portion of the nail body and configured to receive a calcaneal screw, wherein at least one of the first opening, the second opening, and the third opening is an elongated slot;
- and
- a cable connected to the distal slider;
- wherein the cable is tensionable to move the distal slider inside the nail body and thereby stretch the Nitinol rod.
7 more elements
An arthrodesis device, comprising:
- a nail body extending along a longitudinal axis between a proximal portion and a distal portion;
- a proximal interlocking fixation body slidably received within a first cannulation located inside the proximal portion;
- a distal interlocking fixation body slidably received within a second cannulation located inside the distal portion;
- and
- a shape memory material connecting member attached to the proximal interlocking fixation body and the distal interlocking fixation body,
- wherein the shape memory material connecting member includes an elongated shaft extending between a first threaded portion and a second threaded portion.
3 more elements
An arthrodesis device, comprising:
- a nail body extending along a longitudinal axis between a proximal portion and a distal portion;
- a proximal interlocking fixation body slidably received within a first cannulation located inside the proximal portion;
- a distal interlocking fixation body slidably received within a second cannulation located inside the distal portion;
- a shape memory material connecting member attached to the proximal interlocking fixation body and the distal interlocking fixation body;
- and
- a cable connected to the distal interlocking fixation body, wherein the cable is tensioned to move the distal interlocking fixation body inside the nail body.
3 more elements
A method of performing an arthrodesis procedure, comprising:
- inserting an arthrodesis device within a joint;
- inserting a first fixation device through the arthrodesis device;
- inserting a second fixation device through the arthrodesis device;
- tensioning a cable of the arthrodesis device, wherein tensioning the cable alters a shape memory material connecting member of the arthrodesis device from an unstretched condition to a stretched condition;
- and
- releasing tension on the cable, wherein releasing the tension on the cable causes the shape memory material connecting member to move back toward the unstretched condition, thereby applying a compressive load across bones of the joint,
- wherein the shape memory material connecting member connects between a proximal interlocking fixation body slidably received within a first cannulation inside the arthrodesis device and a distal interlocking fixation body slidably received within a second cannulation inside the arthrodesis device.
4 more elements
Dependencies are inferred from the claim text.