Interspinous spacer
First Claim
1. A method for treating a subject, comprising:
- splitting the subject'"'"'s supraspinous ligament to create an opening;
moving a cannula through the opening located generally along the subject'"'"'s midline;
delivering an interspinous implant device through the cannula and to an interspinous space along the subject'"'"'s spine;
rotating a first rotating member of the interspinous implant device to move a first superior extension of the first rotating member along a first side of a superior spinous process and to move a first inferior extension of the first rotating member along a first side of an inferior spinous process;
rotating a second rotating member of the interspinous implant device to move a second superior extension of the second rotating member along a second side of the superior spinous process and to move a second inferior extension of the second rotating member along a second side of the inferior spinous process; and
removing the cannula from the subject while the superior spinous process is positioned directly between the first and second superior extensions and the inferior spinous process is positioned directly between the first and second inferior extensions.
1 Assignment
0 Petitions
Accused Products
Abstract
An implantable spacer for placement between adjacent spinous processes is provided. The spacer includes a body and a wing rotatably connected to the body. The wing includes two U-shaped configurations that together define a substantially H-shaped configuration for retaining the spacer between adjacent spinous processes. An actuator assembly is connected to the body and to the wing with the proximal end of the spacer being connectable to a removable driver that is configured to engage the actuator assembly. While connected to the spacer, the driver is rotatable in one direction to deploy the wing from an undeployed to a deployed configuration and in an opposite direction to undeploy the wing. In the deployed configuration, the spacer acts as a space holder opening up the area of the spinal canal, maintaining foraminal height, reducing stress on the facet joints and relieving pain for the patient.
599 Citations
22 Claims
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1. A method for treating a subject, comprising:
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splitting the subject'"'"'s supraspinous ligament to create an opening; moving a cannula through the opening located generally along the subject'"'"'s midline; delivering an interspinous implant device through the cannula and to an interspinous space along the subject'"'"'s spine; rotating a first rotating member of the interspinous implant device to move a first superior extension of the first rotating member along a first side of a superior spinous process and to move a first inferior extension of the first rotating member along a first side of an inferior spinous process; rotating a second rotating member of the interspinous implant device to move a second superior extension of the second rotating member along a second side of the superior spinous process and to move a second inferior extension of the second rotating member along a second side of the inferior spinous process; and removing the cannula from the subject while the superior spinous process is positioned directly between the first and second superior extensions and the inferior spinous process is positioned directly between the first and second inferior extensions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for treating a subject, comprising:
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moving a cannula through an opening located generally along the subject'"'"'s midline; delivering an interspinous implant device through the cannula and to an interspinous space along the subject'"'"'s spine; rotating a first rotating member of the interspinous implant device to move a first superior extension of the first rotating member along a first side of a superior spinous process and to move a first inferior extension of the first rotating member along a first side of an inferior spinous process; rotating a second rotating member of the interspinous implant device to move a second superior extension of the second rotating member along a second side of the superior spinous process and to move a second inferior extension of the second rotating member along a second side of the inferior spinous process; and removing the cannula from the subject while the superior spinous process is positioned directly between the first and second superior extensions and the inferior spinous process is positioned directly between the first and second inferior extensions, wherein the method further comprises; moving an end of the cannula through a supraspinous ligament of the subject; advancing the interspinous implant device along a passageway of the cannula while longitudinal axes of the first and second rotating members extend in a direction substantially parallel to a longitudinal axis of the passageway; and after delivering the interspinous implant device through the cannula, driving an actuator of the interspinous implant device using a delivery instrument connected to the interspinous implant device to cause rotation of the first and second rotating members.
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10. A method for treating a subject, comprising:
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positioning a cannula through the subject'"'"'s supraspinous ligament; delivering an interspinous spacer through the cannula and to an interspinous space in the subject; and rotating a wing assembly of the interspinous spacer relative to a body of the interspinous spacer while the body is located at the interspinous space such that first and second superior extensions of the wing assembly move superiorly relative to the subject'"'"'s spine to position the subject'"'"'s superior spinous process between the first and second superior extensions, and first and second inferior extensions of the wing assembly move inferiorly relative to the subject'"'"'s spine to position the subject'"'"'s inferior spinous process between the first and second inferior extensions. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. A minimally-invasive percutaneous method for treating a subject, comprising:
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moving an interspinous spacer in a delivery configuration along an anterior-to-posterior delivery path and to an interspinous space, wherein the interspinous spacer includes— a body with an actuator, a first elongate member, and a second elongate member, wherein the first and second elongate members are pivotally coupled to and aligned with the body when the interspinous spacer is in the delivery configuration; and driving the actuator using a delivery instrument releasably connected to the interspinous spacer to pivot the first and second elongate members relative to the body so as to move the interspinous spacer to a deployed configuration such that a superior spinous process is located directly between the first and second elongate members and an inferior spinous process is located directly between the first and second elongate members, wherein the method further comprises moving an end of the cannula through a supraspinous ligament of the subject; and moving the interspinous spacer along a passageway of the cannula while longitudinal axes of the first and second elongate members extend in a direction substantially parallel to a path of travel of the interspinous spacer along the passageway. - View Dependent Claims (18, 19, 20, 21)
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22. A minimally-invasive percutaneous method for treating a subject, comprising:
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moving an interspinous spacer in a delivery configuration along an anterior-to-posterior delivery path and to an interspinous space, wherein the interspinous spacer includes— a body with an actuator, a first elongate member, and a second elongate member, wherein the first and second elongate members are pivotally coupled to and aligned with the body when the interspinous spacer is in the delivery configuration; and driving the actuator using a delivery instrument releasably connected to the interspinous spacer to pivot the first and second elongate members relative to the body so as to move the interspinous spacer to a deployed configuration such that a superior spinous process is located directly between the first and second elongate members and an inferior spinous process is located directly between the first and second elongate members wherein the method further comprises operating the delivery instrument to rotate the first and second elongate members together about a common axis of rotation that extends substantially perpendicular to a sagittal plane of the interspinous spacer.
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Specification