Method and apparatus for loading and implanting a shape memory implant
Inventors
Cheney, Daniel F. • Taber, Joseph H. • Perkins, Luke A. • Ritz, Joseph P.
Assignees
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Publication Number
US-10456131-B2
Publication Date
2019-10-29
Expiration Date
Abstract
An implant insertion device is adapted for use with a shape memory implant. The shape memory implant includes a bridge interconnecting first and second legs. The shape memory implant is movable between a first shape in which the first and second legs are substantially non-parallel and a second shape in which the first and second legs are substantially parallel. The implant insertion device engages the shape memory implant to maintain the shape memory implant in its second shape until the delivery of the shape memory implant into tissue or bone.
Core Innovation
The invention relates to an implant insertion device adapted for use with a shape memory implant movable between a first shape and a second shape. The implant insertion device maintains the shape memory implant in the second shape until the delivery of the shape memory implant into tissue or bone, and the implant in the second shape is held by engaging a bridge and/or legs of the shape memory implant with multiple movable jaws.
In the implant insertion device, a body includes a first jaw, a second jaw, and a third jaw, wherein the first, second, and third jaws are movable from a disengaged position to an engaged position. A slider coupled with the body is movable between an unlocked position and a locked position, and the slider in its locked position maintains the first, second, and third jaws in their engaged positions such that the jaws engage and maintain the shape memory implant in its second shape.
The slider provides controlled locking by inserting between jaws and engaging the third jaw to maintain the engaged configuration of the first and second jaws. The arrangement enables the first and second jaws to engage different portions of the shape memory implant, including a first leg and a second leg, while the third jaw maintains the overall second-shape configuration, and the device is defined by a jaw and channel structure that engages at least a portion of a bridge of the shape memory implant through first, second, and third channels defined by arms and jaws.
Claims Coverage
The partial content includes five independent claims. Across these claims, the inventive concepts center on maintaining a shape memory implant in a second shape until delivery into tissue or bone using a multi-jaw body and a slider that moves between unlocked and locked positions to keep the jaws engaged and to maintain second-shape engagement through jaw and channel/leg/bridge interfaces.
Maintaining a shape memory implant in a second shape with three movable jaws locked by a slider
An implant insertion device adapted for use with a shape memory implant movable between a first shape and a second shape, wherein the implant insertion device maintains the shape memory implant in the second shape until the delivery of the shape memory implant into tissue or bone; a body comprising a first jaw, a second jaw, and a third jaw movable from a disengaged position to an engaged position; and a slider coupled with the body movable between an unlocked position and a locked position, wherein the slider in its locked position maintains the first, second, and third jaws in their engaged positions by inserting between the first jaw and the second jaw and engaging the third jaw such that the jaws engage and maintain the shape memory implant in its second shape.
Slider-driven jaw movement into an upward arc engaged position
An implant insertion device adapted for use with a shape memory implant movable between a first shape and a second shape, wherein the implant insertion device maintains the shape memory implant in the second shape until the delivery of the shape memory implant into tissue or bone; a body comprising a first jaw, a second jaw, and a third jaw movable from a disengaged position to an engaged position; and a slider coupled with the body movable between an unlocked position and a locked position, wherein movement of the slider to its locked position maintains the first, second, and third jaws in their engaged positions and inserts the slider between the first and second jaws and moves the first and second jaws horizontally outward and in an upward arc to their engaged positions such that the first and second jaws engage the shape memory implant and maintain the shape memory implant in the second shape.
Channel-based bridge engagement with a slider locking engaged jaws
An implant insertion device adapted for use with a shape memory implant movable between a first shape and a second shape, wherein the implant insertion device maintains the shape memory implant in the second shape until the delivery of the shape memory implant into tissue or bone; a body comprising a first arm terminating in a first jaw defining a first channel, a second arm terminating in a second jaw defining a second channel, and a third and a fourth arm terminating in a third jaw defining a third channel, wherein the first, second, and third jaws are movable from a disengaged position to an engaged position such that the first, second, and third channels engage at least a portion of a bridge of the shape memory implant; and a slider coupled with the body movable between an unlocked position and a locked position, wherein the slider in its locked position maintains the first, second, and third jaws in their engaged positions.
Slider retention by coupling between arms and receiver during unlocked-to-locked movement
An implant insertion device adapted for use with a shape memory implant movable between a first shape and a second shape, wherein the implant insertion device maintains the shape memory implant in the second shape until the delivery of the shape memory implant into tissue or bone; a body comprising a first arm terminating in a first jaw, a second arm terminating in a second jaw, and a third arm and a fourth arm terminating in a third jaw, wherein the first, second, and third jaws are movable from a disengaged position to an engaged position; and a slider coupled with the body and movable between an unlocked position and a locked position that maintains the first, second, and third jaws in their engaged positions, wherein the slider includes a slot adapted to receive therein a slider receiver of the body, thereby coupling the slider with the body between the first and second arms and the third and fourth arms such that the slider remains coupled with the body during movement of the slider between its unlocked and locked positions.
Leg engagement with a slider inserting between first and second jaws while third jaw maintains second shape
An implant insertion device adapted for use with a shape memory implant movable between a first shape and a second shape, wherein the implant insertion device maintains the shape memory implant in the second shape until the delivery of the shape memory implant into tissue or bone; a body comprising a first jaw, a second jaw, and a third jaw movable from a disengaged position to an engaged position; and a slider coupled with the body movable between an unlocked position and a locked position, wherein the slider in its locked position maintains the first, second, and third jaws in their engaged positions, whereby the slider inserts between both the first jaw and the second jaw to maintain the first and second jaws in their engaged positions such that the first jaw engages a first leg of the shape memory implant and the second jaw engages a second leg of the shape memory implant, and wherein the slider engages the third jaw to maintain the third jaw in its engaged position with the first and second jaws such that the first, second, and third jaws engage and maintain the shape memory implant in its second shape.
All independent claims are directed to an implant insertion device that maintains a shape memory implant in a second shape until delivery into tissue or bone by using a body with three movable jaws and a slider that moves between unlocked and locked positions to keep the jaws in engaged positions. The claims further differentiate the jaw/slider functionality by specifying upward-arc engaged movement, channel-based bridge engagement, slider coupling via a slot/receiver, and explicit first-leg/second-leg engagement while the third jaw maintains the second-shape configuration.
Stated Advantages
Documented Applications
No documented applications found
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