Minimally Invasive Surgical (MIS) Technique and System for Performing an Interbody Lumbar Fusion with a Navigatable Intervertebral Disc Removal Device and Collapsible Intervertebral Device
First Claim
1. A minimally invasive surgical (MIS) system for performing interbody lumbar fusion, comprising:
- a navigable intervertebral disc removal device;
an intervertebral balloon; and
a dual purpose cannula having an extraction portion for extracting a shaved disc of a patient and having an insertion portion for inserting said balloon in a space where the shaved disc was extracted.
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Accused Products
Abstract
A technique and system is provided for efficiently, effectively and safely performing an interbody lumbar fusion. The technique and system utilizes: (1) a rotary shaver that provides a shaving cannula; (2) an outflow/insertion cannula which provides a dual purpose cannula; and (3) a fusible balloon which provides a biodegradable intervertebral bag. The patient'"'"'s disc is shaved and cut out with the shaver while the shavings are sucked out with the dual purpose cannula. Afterwards, the balloon is inserted at the tip of the dual purpose cannula and the balloon is filled with a grafting substance. The balloon assumes the shape of the removed disc. The grafting substance will fuse to the balloon and to the adjacent vertebrae and provide a support where the removed disc was.
91 Citations
20 Claims
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1. A minimally invasive surgical (MIS) system for performing interbody lumbar fusion, comprising:
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a navigable intervertebral disc removal device; an intervertebral balloon; and a dual purpose cannula having an extraction portion for extracting a shaved disc of a patient and having an insertion portion for inserting said balloon in a space where the shaved disc was extracted. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 16)
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11. A minimally invasive surgical (MIS) process providing a technique for performing interbody lumbar fusion, comprising the steps of:
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inserting and navigating a navigable intervertebral disc removal device in a nucleus pulposis of a patient posteriorly and laterally of a lumbar facet and in proximity to a patient'"'"'s disc in a safe zone below an exiting nerve of the patient'"'"'s disc; inserting and positioning a dual action cannula in the nucleolus pulposis posteriorly and laterally of another lumbar facet and in proximity to the patient'"'"'s disc in the safe zone; shaving and substantially removing the patient'"'"'s disc with the intervertebral disc removal device; extracting and discharging the removed patient'"'"'s disc with the dual action cannula; inserting an osteoconductive, osteoinductive or osteogenic, collapsible intervertebral balloon with the dual action cannula into a disc space previously occupied by the patient'"'"'s disc; dispensing a grafting substance into the balloon in the disc space; and fusing the grafting substance and balloon in the disc space adjacent vertebrae bodies to form a fusion support there between. - View Dependent Claims (12, 13, 14, 15)
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17. A minimally invasive surgical (MIS) system for performing interbody lumbar fusion, comprising:
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a navigable intervertebral disc removal device for removing a patient'"'"'s disc comprising a shaver assembly providing a shaver cannula, with an outer casing having an interior and a head with a shaver access opening and/an outflow irrigation opening, said casing having a steerability section with an accordion connection spaced from said shaver access opening, a shaft extending into said casing, at least one power driven circular blade accessible and communicating with said shaver access opening and positioned within the interior of said casing for shaving the patient'"'"'s disc, said blade positioned in proximity to a tip of said shaft, an array of stackable moveable shaver discs spaced from said blade and connected to said shaft for accommodating longitudinal and lateral movement of said shaft, a water inlet tube extending into said casing, and a flexible steering rod extending into said casing; an osteoconductive, osteoinductive or osteogenic, collapsible intervertebral balloon comprising an intervertebral bag with an expendable contour for replicating and complementing a patient'"'"'s disc, said bag being expandable in a cranial and caudal direction for occupying a disc space after the patient'"'"'s disc has been removed, said bag having an interior for receiving a grafting material providing a graft substance for fusing and providing a fusion support for adjacent vertebrae bodies in the disc space, said balloon comprising medical grade biodegradable fusible material for being absorbed and fused with the fusion support; and a dual action cannula having an extraction section providing a suction device for extracting and discharging the removed patient'"'"'s disc and having an insertion portion for inserting said balloon in the disc space after the patient'"'"'s disc has been removed. - View Dependent Claims (18, 19, 20)
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Specification