Systems and methods for posterior dynamic stabilization of the spine
First Claim
1. A method for spacing apart a superior spinous process and an inferior spinous process of a subject, the method comprising:
- positioning an interspinous spacer device between the superior and inferior spinous processes, the interspinous spacer device including a main body, a pair of superior elongate members, a pair of inferior elongate members, a movable superior central section extending between the superior elongate members, and a movable inferior central section extending between the inferior elongate members, wherein the movable superior central section extends across most of a first distance between the superior elongate members and/or the movable inferior central section extends across most of a second distance between the inferior elongate members;
moving the interspinous spacer device from a delivery configuration toward a deployed H-shaped configuration using an instrument coupled to the interspinous spacer device such that the superior elongate members rotate relative to the main body and move along opposite sides of the superior spinous process, the inferior elongate members rotate relative to the main body and move along opposite sides of the inferior spinous process, and regions of the superior and inferior central sections are positioned along a sagittal plane of the subject and translate away from one another and toward the superior and inferior spinous processes, wherein the superior and inferior elongate members are substantially parallel to a longitudinal axis of the interspinous spacer device when the interspinous spacer device is in the delivery configuration, wherein the sagittal plane passes through the superior and inferior spinous processes; and
separating the instrument from the interspinous spacer device after the superior and inferior central sections extend laterally across the sagittal plane and across the superior and inferior spinous processes, respectively, and the interspinous spacer device is in the deployed H-shaped configuration.
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Accused Products
Abstract
Devices, systems and methods for dynamically stabilizing the spine are provided. The devices include an expandable spacer or member having an unexpanded configuration and an expanded configuration, wherein the expandable member in an expanded configuration has a size, volume and/or shape configured for positioning between the spinous processes of adjacent vertebrae in order to distract the vertebrae relative to each other. The systems include one or more expandable members and an expansion medium for injection within or for filling the interior of the expandable member via the port. The methods involve the implantation of one or more devices or expandable spacers.
534 Citations
33 Claims
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1. A method for spacing apart a superior spinous process and an inferior spinous process of a subject, the method comprising:
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positioning an interspinous spacer device between the superior and inferior spinous processes, the interspinous spacer device including a main body, a pair of superior elongate members, a pair of inferior elongate members, a movable superior central section extending between the superior elongate members, and a movable inferior central section extending between the inferior elongate members, wherein the movable superior central section extends across most of a first distance between the superior elongate members and/or the movable inferior central section extends across most of a second distance between the inferior elongate members; moving the interspinous spacer device from a delivery configuration toward a deployed H-shaped configuration using an instrument coupled to the interspinous spacer device such that the superior elongate members rotate relative to the main body and move along opposite sides of the superior spinous process, the inferior elongate members rotate relative to the main body and move along opposite sides of the inferior spinous process, and regions of the superior and inferior central sections are positioned along a sagittal plane of the subject and translate away from one another and toward the superior and inferior spinous processes, wherein the superior and inferior elongate members are substantially parallel to a longitudinal axis of the interspinous spacer device when the interspinous spacer device is in the delivery configuration, wherein the sagittal plane passes through the superior and inferior spinous processes; and separating the instrument from the interspinous spacer device after the superior and inferior central sections extend laterally across the sagittal plane and across the superior and inferior spinous processes, respectively, and the interspinous spacer device is in the deployed H-shaped configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for spacing apart a superior spinous process and an inferior spinous process of a subject, the method comprising:
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positioning an interspinous spacer device between the superior and inferior spinous processes, the interspinous spacer device including a main body, a pair of superior elongate members, a pair of inferior elongate members, a movable superior central section extending between the superior elongate members, and a movable inferior central section extending between the inferior elongate members, wherein the superior elongate members are foldable against the main body, wherein the movable superior central section extends across most of a first distance between the superior elongate members and/or the movable inferior central section extends across most of a second distance between the inferior elongate members; moving the interspinous spacer device from a delivery configuration toward a deployed H-shaped configuration using an instrument coupled to the interspinous spacer device such that the superior elongate members rotate relative to the main body and move along opposite sides of the superior spinous process, the inferior elongate members rotate relative to the main body and move along opposite sides of the inferior spinous process, and regions of the superior and inferior central sections are positioned along a sagittal plane of the subject and translate away from one another and toward the superior and inferior spinous processes, wherein the sagittal plane passes through the superior and inferior spinous processes; and separating the instrument from the interspinous spacer device after the superior and inferior central sections extend laterally across the sagittal plane and across the superior and inferior spinous processes, respectively, and the interspinous spacer device is in the deployed H-shaped configuration.
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18. A method for spacing apart a first spinous process and a second spinous process, the method comprising:
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positioning an interspinous spacer device at an interspinous space between the first and second spinous processes; rotating a pair of first elongate members of the interspinous spacer device from a first delivery configuration toward a first deployed configuration, wherein the first elongate members in the first delivery configuration are substantially parallel to a longitudinal axis of the interspinous spacer device; rotating a pair of second elongate members of the interspinous spacer device from a second delivery configuration toward a second deployed configuration, wherein the second elongate members in the second delivery configuration are substantially parallel to the longitudinal axis of the interspinous spacer device; moving first and second central sections toward the first and second spinous processes, respectively, while both the first and second central sections are positioned across a subject'"'"'s sagittal plane passing through the first and second spinous processes, respectively, and wherein the first central section extends across most of a distance between the first elongate members; and separating a delivery instrument from the interspinous spacer device when the interspinous spacer device is in a deployed H-shaped configuration and when the first and second elongate members are in the first and second deployed configurations, respectively. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method comprising:
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positioning an interspinous spacer device at an interspinous space between first and second spinous processes of a subject; moving a pair of first elongate members of the interspinous spacer device from a first delivery configuration toward a first deployed configuration, wherein the first elongate members in the first delivery configuration are substantially parallel to a longitudinal axis of the interspinous spacer device; moving a pair of second elongate members of the interspinous spacer device from a second delivery configuration toward a second deployed configuration; moving first and second central sections of the interspinous spacer device toward the first and second spinous processes, respectively, wherein a portion of the first central section that moves toward the first spinous process extends across most of a distance between the first elongate members; and expanding a narrowed section of the interspinous spacer device to translate the first and second central sections in the opposite directions, wherein the first and second central sections are part of the narrowed section, and wherein the narrowed section is positioned between the first elongate members and is positioned between the second elongate members. - View Dependent Claims (31, 32)
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33. The method of 30, wherein the first elongate members and/or second elongate members are foldable against a main body of the interspinous spacer device.
Specification