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US 10,327,826 B2Granted
Devices, systems, and methods for semi-rigid bone fixation
AssigneeAkros Medical, Inc.
InventorsCharles Horrell, Nicholas Mourlas, Jon Thompson
Life of this patent
Estimating the term…
Abstract
Apparatus and methods are provided for the approximation of two bones, the apparatus including a first anchor that is rotationally driven into a first bone by a second bone anchor, which receives driving torque from a driver tool. After the first anchor is secured in the first bone, the second anchor is disengaged from the first anchor but remains connected to the first anchor by a flexible link of a designed length. The second bone anchor is secured in the second bone and has provisions to be lengthened or shortened to adjust the overall length of the implant, thereby adjusting the approximation between the two bones.
Claims21
An apparatus for the approximation of two bones, comprising:
- a first anchor comprising a proximal end, a distal end configured for insertion into a first bone, and a bore extending from the proximal end towards the distal end, the bore including a proximal region defining a plurality of walls, and an intermediate region distal to the proximal region including a first mount;
- and
- a second anchor comprising:
- a first component including a proximal end, a distal end sized to be inserted into the proximal region of the bore in a delivery configuration and having a predetermined shape such that the distal end engages the plurality of walls in the delivery configuration to transfer force from a driver tool coupled to the first component to the first anchor, and a second mount;
- a second component including a tubular body sized to be advanced over the first component proximal end and including one or more features on a surface of the tubular body or extending from the tubular body for cooperating with one or more corresponding features on a surface of the first component or extending from the first component to control advancement of the second component over the first component, and an enlarged head on a proximal end of the tubular body;
- and
- a flexible link extending between the first and second mounts for limiting spacing of the first component from the first anchor when the first component distal end is disengaged from the proximal region of the bore in a deployed configuration.
4 more elements
A system for the approximation of first and second bones, comprising:
- a) a first driver tool comprising a proximal end, a distal end, a lumen extending between the driver tool proximal and distal ends, and a socket in the distal end;
- b) a guide member slidably inserted into the first driver tool lumen and including a distal end including one or more connectors disposed adjacent the first driver tool distal end;
- c) an implant comprising:
- i) a first anchor comprising a proximal end, a distal end configured for insertion into a first bone, and a bore extending from the proximal end towards the distal end, and an intermediate region distal to the proximal region including a first mount;
- ii) a first component for a second anchor comprising a proximal end received in the socket of the first driver tool, a distal end extending from the first driver tool distal end and received in the proximal region of the bore and shaped to engage the first anchor to transfer force from the first driver tool to the first anchor to insert the first anchor into a first bone, a second mount adjacent the distal end, and one or more mating connectors engaged with the one or more connectors of the guide member;
- iii) a second component for the second anchor including a tubular body sized to be advanced over the first component proximal end when the first driver tool is removed after inserting the first anchor into bone to expose the proximal end of the first component, and an enlarged head on a proximal end of the tubular body, the tubular body including one or more features on a surface of the tubular body or extending from the tubular body for cooperating with one or more corresponding features on a surface of the first component or extending from the first component to control advancement of the second component over the first component;
- and
- iv) a flexible link extending between the first and second mounts for limiting spacing of the first component from the first anchor when the first component distal end is disengaged from the proximal region of the bore;
- and
- d) a second installation tool engageable with the head of the second component for directing the second component over the first component to adjust an overall length of the implant, thereby adjusting the approximation between the first and second bones.
7 more elements
An apparatus for the approximation of two bones, comprising:
- a first anchor comprising a proximal end, a distal end configured for insertion into a first bone, and a bore extending from the proximal end towards the distal end, the bore including a proximal region defining a plurality of walls, and an intermediate region distal to the proximal region including a first mount;
- and
- a second anchor comprising:
- a first component including a proximal end, a distal end sized to be inserted into the proximal region of the bore in a delivery configuration and having a predetermined shape such that the distal end engages the plurality of walls in the delivery configuration to transfer force from a driver tool coupled to the first component to the first anchor, and a second mount;
- a second component including a tubular body sized to be advanced over the first component proximal end and an enlarged head on a proximal end of the tubular body;
- cooperating threads on the first and second components to control advancement of the second component over the first component;
- and
- a flexible link extending between the first and second mounts for limiting spacing of the first component from the first anchor when the first component distal end is disengaged from the proximal region of the bore in a deployed configuration.
5 more elements
Dependencies are inferred from the claim text.