Spinal mobility preservation apparatus having an expandable membrane
First Claim
1. An implantable spinal mobility preservation apparatus, comprising:
- a intermediate body having a proximal end and a distal end and including at least one flexible element positioned between the proximal and the distal end;
a proximal body including a first retention structure secured to the proximal end of the intermediate body and defining a proximal lumen;
a distal body including a second retention structure secured to the distal end of the intermediate body; and
an expandable membrane secured over at least a portion of the intermediate body.
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Accused Products
Abstract
A spinal mobility preservation apparatus and methods are disclosed. The spinal mobility preservation apparatus may include a proximal body, an intermediate body, a distal body, and an expandable membrane. The proximal body and the distal body secure the mobility preservation apparatus to adjacent vertebral bodies. At least one of an intermediate body and an expandable membrane secure the proximal body to the distal body and provide a degree of support to a spinal motion segment defined by the adjacent vertebral bodies. A single proximal body and an expandable membrane may also compose a spinal mobility preservation apparatus. The proximal body secured to one of a superior or an inferior vertebral body and the expandable membrane extending into the intervertebral disc space to support the spinal motion segment.
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Citations
119 Claims
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1. An implantable spinal mobility preservation apparatus, comprising:
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a intermediate body having a proximal end and a distal end and including at least one flexible element positioned between the proximal and the distal end;
a proximal body including a first retention structure secured to the proximal end of the intermediate body and defining a proximal lumen;
a distal body including a second retention structure secured to the distal end of the intermediate body; and
an expandable membrane secured over at least a portion of the intermediate body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61. An implantable spinal mobility preservation apparatus, comprising:
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a intermediate body having a proximal end and a distal end and including at least one flexible element positioned between the proximal and the distal end;
a proximal body defining a proximal lumen and including a first retention structure secured to the proximal end of the intermediate body;
a distal body including a second retention structure secured to the distal end of the intermediate body;
an expandable membrane secured over at least a portion of the intermediate body; and
a plug secured within the proximal lumen.
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62. A method for supporting the spine, comprising:
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providing an implantable spinal mobility preservation apparatus having a intermediate body having a proximal end and a distal end and including at least one flexible element positioned between the proximal and the distal end, a proximal body including a first retention structure secured to the proximal end of the intermediate body, the proximal body defining a proximal lumen, a distal body including a second retention structure secured to the distal end of the intermediate body, and an expandable membrane secured over at least a portion of the intermediate body, the expandable membrane defining an expansion chamber and the expansion chamber in fluid communication with the proximal lumen;
forming an axial bore through a caudad vertebral body, an intervertebral disc and a cephalad vertebral body;
removing at least a portion of a nucleus pulposus of the intervertebral disc through the axial bore to form a disc space; and
axially inserting the implantable spinal mobility preservation apparatus through the axial bore;
securing the distal body of the implantable mobility preservation apparatus in the cephalad vertebral body;
securing the proximal body of the implantable mobility preservation apparatus in the caudad vertebral body; and
providing a prosthetic nucleus material through the proximal lumen into the expansion chamber of the spinal mobility preservation apparatus.
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63. An implantable spinal mobility preservation apparatus, comprising:
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a intermediate body being substantially radially symmetrical about a longitudinal axis and having a proximal end and a distal end, the intermediate body including at least one flexible element positioned between the proximal and the distal end to increase the flexibility of the intermediate body, and the intermediate body defining at least one fenestration;
a proximal body being substantially radially symmetrical about a longitudinal axis, the proximal body secured to the proximal end of the intermediate body, the proximal body including a first thread to rotatably position the proximal body through an axial bore in a body of a caudad vertebra, the proximal body defining a proximal lumen in fluid communication with the at least one fenestration of the intermediate body;
a distal body being substantially radially symmetrical about a longitudinal axis, the distal body secured to the distal end of the intermediate body, the distal body including second thread to rotatably position the distal body through an axial bore in a body of a cephalad vertebra; and
an expandable membrane having a substantially tubular shape, the expandable membrane secured over at least a portion of intermediate body which includes the at least one fenestration, the expandable membrane defining an expansion chamber in fluid communication with the at least one fenestration of the intermediate body. - View Dependent Claims (64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117)
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118. A method for supporting the spine, comprising:
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providing an implantable spinal mobility preservation apparatus having a intermediate body being substantially radially symmetrical about a longitudinal axis and having a proximal end and a distal end, the intermediate body including at least one flexible element positioned between the proximal and the distal end to increase the flexibility of the intermediate body, and the intermediate body defining at least one fenestration, a proximal body being substantially radially symmetrical about a longitudinal axis, the proximal body secured to the proximal end of the intermediate body, the proximal body including a first thread to rotatably position the proximal body through an axial bore in a body of a caudad vertebra, the proximal body defining a proximal lumen in fluid communication with the at least one fenestration of the intermediate body, a distal body being substantially radially symmetrical about a longitudinal axis, the distal body secured to the distal end of the intermediate body, the distal body including second thread to rotatably position the distal body through an axial bore in a body of a cephalad vertebra, and an expandable membrane having a substantially tubular shape, the expandable membrane secured over at least a portion of intermediate body which includes the at least one fenestration, the expandable membrane defining an expansion chamber in fluid communication with the at least one fenestration of the intermediate body;
forming an axial bore through a caudad vertebral body, an intervertebral disc and a cephalad vertebral body;
removing at least a portion of a nucleus pulposus of the intervertebral disc through the axial bore to form a disc space; and
axially inserting the implantable spinal mobility preservation apparatus through the axial bore;
securing the distal body of the implantable mobility preservation apparatus in the cephalad vertebral body;
securing the proximal body of the implantable mobility preservation apparatus in the caudad vertebral body; and
providing a prosthetic nucleus material through the proximal lumen into the expansion chamber of the spinal mobility preservation apparatus.
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119. An implantable spinal mobility preservation apparatus, comprising:
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a intermediate body being substantially radially symmetrical about a longitudinal axis and having a proximal end and a distal end, the intermediate body including at least one flexible element positioned between the proximal and the distal end to increase the flexibility of the intermediate body, and the intermediate body defining at least one fenestration;
a proximal body being substantially radially symmetrical about a longitudinal axis, the proximal body secured to the proximal end of the intermediate body, the proximal body including a first thread to rotatably position the proximal body through an axial bore in a body of a caudad vertebra, the proximal body defining a proximal lumen in fluid communication with the at least one fenestration of the intermediate body;
a distal body being substantially radially symmetrical about a longitudinal axis, the distal body secured to the distal end of the intermediate body, the distal body including second thread to rotatably position the distal body through an axial bore in a body of a cephalad vertebra;
an expandable membrane having a substantially tubular shape, the expandable membrane secured over at least a portion of intermediate body which includes the at least one fenestration, the expandable membrane defining an expansion chamber in fluid communication with the at least one fenestration of the intermediate body; and
a plug secured within the proximal lumen.
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Specification