Deployable bistable auxetic expandable interbody spacer
AssigneeGlobus Medical, Inc.
InventorsPaden Troxell, David C. Paul, Norbert Johnson
Life of this patent
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Abstract
An implant can be configured to transition between a first stable state and a second stable state. The implant can include a first surface and a second surface coupled to the first surface. The first surface can include a first structure configured to form a stable planar shape during the first stable state of the implant and to form a stable three-dimensional (“3D”) shape during the second stable state of the implant. The second surface can include a second structure configured to form a stable planar shape during the first stable state of the implant and to form a stable 3D shape during the second stable state of the implant.
Claims15
An implant configured to transition between a first stable state and a second stable state, the implant comprising:
- a first surface including a first structure configured to form a stable planar shape during the first stable state of the implant and to form a stable three-dimensional (“3D”) shape during the second stable state of the implant;
- and
- a second surface coupled to the first surface and including a second structure configured to form a stable planar shape during the first stable state of the implant and to form a stable 3D shape during the second stable state of the implant
- wherein the first surface and the second surface are configured to be parallel in the first stable state
- an inflatable chamber positioned between the first surface and the second surface,
- wherein the inflatable chamber is configured to be in a deflated state during the first stable state of the implant,
- wherein the inflatable chamber is configured to transition the implant from the first stable state to the second stable state in response to being inflated, and
- wherein the inflatable chamber is configured to be removable without altering a state of the implant while the implant is positioned within a patient.
A method of inserting an implant within a patient, the method comprising:
- positioning the implant into the patient while the implant is in a first stable state, the implant including:
- a first surface including a first structure configured to form a stable planar shape during the first stable state of the implant and to form a stable three-dimensional (“3D”) shape during a second stable state of the implant;
- and
- a second surface coupled to the first surface and including a second structure configured to form a stable planar shape during the first stable state of the implant and to form a stable 3D shape during the second stable state of the implant;
- and
- triggering the implant to transition from the first stable state to the second stable state,
- wherein the first structure comprises a first auxetic structure, and
- wherein the second structure comprises a second auxetic structure,
- wherein triggering the implant to transition from the first stable state to the second stable state comprises:
- inflating an inflatable chamber positioned between the first surface and the second surface to cause a force applied to each of the first structure and the second structure to be above a threshold force.
A non-transitory computer readable medium for storing instructions executable by a robotic assisted surgery system to perform perform operations comprising the method of:
- positioning an implant into a patient while the implant is in a first stable state, the implant including:
- a first surface including a first auxetic structure configured to form a stable planar shape during the first stable state of the implant and to form a stable three-dimensional (“3D”) shape during a second stable state of the implant;
- and
- a second surface coupled to the first surface and including a second auxetic structure configured to form a stable planar shape during the first stable state of the implant and to form a stable 3D shape during the second stable state of the implant;
- and
- triggering the implant to transition from the first stable state to the second stable state
- wherein positioning the implant into the patient comprises positioning the implant into the patient while the implant is in a compressed version of the first stable state,
- the operations further comprising:
- compressing the implant to place the implant into the compressed version of the first stable state;
- responsive to compressing the implant, inserting the implant into a cartridge,
- wherein positioning the implant into the patient comprises:
- positioning a first end of an insertion instrument into the patient;
- inserting the cartridge into a second end of the insertion instrument;
- pushing the cartridge through a portion of the insertion instrument;
- pushing the cartridge to the second end of the insertion instrument;
- pushing the implant out of the cartridge through the second end of the insertion instrument;
- inflating an inflation chamber positioned between the first surface and the second surface;
- and
- remove the inflatable chamber while keeping the implant in the second stable state.
Dependencies are inferred from the claim text.