Percutaneous spinal implants and methods
First Claim
Patent Images
1. An apparatus, comprising:
- an outer body having a collapsed configuration and an expanded configuration, the outer body having a distal portion, a central exterior portion, and a proximal portion disposed sequentially along a longitudinal axis, the central exterior portion configured to be disposed between adjacent spinous processes, the central exterior portion comprising a longitudinal midpoint of an exterior of the outer body;
an inner body disposed within an interior area of the outer body, the inner body having an outer surface in slidable contact with an inner surface of the outer body;
wherein a length of the outer body is greater in the collapsed configuration than in the expanded configuration, the length being measured along the longitudinal axis and transverse to a direction of expansion;
wherein a height of the central exterior portion does not increase as the outer body moves from the collapsed configuration to the expanded configuration, wherein the height of the central exterior portion is measured in the direction of expansion and transverse to the longitudinal axis.
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Abstract
An apparatus includes an elongate member having a portion configured to be deformed from a first configuration to a second configuration. In one variation, the apparatus includes an outer body, having a collapsed configuration and an expanded configuration, and an inner body. A portion of the outer body is configured to be disposed between adjacent spinous processes. The inner body is disposed within the interior region of the outer body. The inner body has an outer surface in slidable contact with an inner surface of the outer body.
398 Citations
20 Claims
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1. An apparatus, comprising:
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an outer body having a collapsed configuration and an expanded configuration, the outer body having a distal portion, a central exterior portion, and a proximal portion disposed sequentially along a longitudinal axis, the central exterior portion configured to be disposed between adjacent spinous processes, the central exterior portion comprising a longitudinal midpoint of an exterior of the outer body; an inner body disposed within an interior area of the outer body, the inner body having an outer surface in slidable contact with an inner surface of the outer body; wherein a length of the outer body is greater in the collapsed configuration than in the expanded configuration, the length being measured along the longitudinal axis and transverse to a direction of expansion; wherein a height of the central exterior portion does not increase as the outer body moves from the collapsed configuration to the expanded configuration, wherein the height of the central exterior portion is measured in the direction of expansion and transverse to the longitudinal axis. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus, comprising:
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an outer body having a collapsed configuration and an expanded configuration, the outer body having a longitudinal length along a first direction, the outer body configured to be percutaneously inserted when in the collapsed configuration, the outer body having a central exterior portion configured to be disposed between adjacent spinous processes when in the expanded configuration, the central exterior portion comprising a longitudinal midpoint of an exterior of the outer body; an inner body disposed within an interior area of the outer body, the inner body configured to substantially maintain a shape of the portion of the outer body in a second direction substantially transverse to the first direction; wherein the longitudinal length of the outer body is greater in the collapsed configuration than in the expanded configuration, the length being measured along the first direction; wherein a height of the central exterior portion does not increase as the outer body moves from the collapsed configuration to the expanded configuration, wherein when the central exterior portion is disposed between adjacent spinous processes, the height is measured in the second direction. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An apparatus, comprising:
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an outer body having a collapsed configuration and an expanded configuration, the outer body configured to be percutaneously inserted when in the collapsed configuration, a portion of the outer body configured to be maintained between adjacent spinous processes when in the expanded configuration; an inner body disposed within an interior area of the outer body and fixedly coupled to the outer body, the inner body having a length along a longitudinal direction less than a length of the outer body along the longitudinal direction; the longitudinal direction being parallel to a longitudinal axis of the outer body and wherein when disposed between the spinous processes, the longitudinal axis extends through a sagittal plane defined by the spinous processes; wherein the length of the outer body is greater in the collapsed configuration than in the expanded configuration. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An apparatus, comprising:
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an outer body having a collapsed configuration and an expanded configuration, the outer body including a first slot and a second slot collectively defining an expandable portion, at least a portion of the outer body configured to be maintained between adjacent spinous processes when in the expanded configuration; wherein the expandable portion is substantially elongate in a longitudinal direction when the outer body is in the collapsed configuration; wherein the expandable portion has a radius greater than a remaining portion of the outer body when the outer body is in both the collapsed and expanded configurations; wherein when the longitudinal direction is parallel to the longitudinal axis of the outer body, and wherein when disposed between the spinous processes, the longitudinal axis extends through a sagittal plane defined by the spinous processes. - View Dependent Claims (20)
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Specification