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US 2017/0303934 A1Published application
Microfracture apparatuses and methods
AssigneeArthrosurface Incorporated
InventorsGeorge J. SIKORA, Steven EK, Steven TALLARIDA
Life of this patent
Estimating the term…
Abstract
Embodiments of apparatuses and methods for microfracture (e.g., forming a plurality of microfractures in a bone to encourage cartilage regeneration).
Claims20
1-20. (canceled)
An apparatus comprising:
- a cannula having a first end, a second end, and a channel extending between the first end and the second end, the cannula having a primary portion and a distal portion between the primary portion and the second end, the distal portion configured such that a second end of the channel is disposed at a non-parallel angle relative to a first end of the channel;
- a monolithic penetrator having a proximal end, a distal end, and a first transverse dimension of less than 1.2 millimeters (mm), the penetrator configured to be disposed in the channel of the cannula such that the penetrator is movable between a retracted position and an extended position in which the distal end extends beyond the second end of the cannula by a penetration distance that is limited by the enlarged head contacting the cannula;
- an enlarged head coupled to the proximal end of the monolithic penetrator;
- where the penetrator is configured to be moved from the retracted position to the extended position substantially without rotation of the penetrator to form in subchondral bone a microfracture;
- and
- where a portion of the penetrator is configured to flex to permit the distal end of the penetrator to align with the angle of the second end of the channel in the cannula as the penetrator moves between the retracted and extended positions.
3 more elements
An apparatus comprising:
- a cannula having a first end, a second end, and a channel extending between the first end and the second end, the cannula having a primary portion and a distal portion between the primary portion and the second end, and a curve between the primary portion and the distal portion such that the distal portion is disposed at a nonparallel angle relative to the primary portion;
- a monolithic penetrator having a proximal end, a distal end, and a first transverse dimension of less than 1.2 millimeters (mm), the penetrator configured to be disposed in the channel of the cannula such that the penetrator is movable between a retracted position and an extended position in which the distal end extends beyond the second end of the cannula by a penetration distance;
- where the penetrator is configured to be moved from the retracted position to the extended position substantially without rotation of the penetrator to form in subchondral bone a microfracture;
- and
- where a portion of the penetrator is configured to flex around the curve in the cannula as the penetrator moves between the retracted and extended positions.
2 more elements
Dependencies are inferred from the claim text.