Nerve deflecting conduit needle and method
First Claim
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1. A surgical apparatus for accessing the spinal foramen comprising:
- an elongate body extending substantially along a first axis with a cross-sectional diameter of at least 3.0 mm, said body having a proximal end and a distal end, said distal end comprising a tip that is sufficiently sharp to puncture disc tissue thereby anchoring said apparatus in said tissue, and a conduit having a cross-sectional diameter of at least 2.0 mm positioned along the distal one-eighth of said body, said conduit extending substantially along a second axis and traversing said apparatus, said second axis positioned at an acute angle relative to said first axis.
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Abstract
This invention relates to devices and methods for accessing the spinal epidural space via the neural foramen. In one aspect of this invention a deflecting conduit needle device is disclosed having an elongated body extending substantially along a first axis. The device has a proximal end and a distal end, and a transverse conduit, positioned along the distal one-eighth of the device and extending substantially along a second axis, wherein the second axis is positioned at an acute angle relative to the first axis. In another aspect of the invention a method is disclosed for accessing the spinal epidural space via the neural foramen.
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Citations
33 Claims
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1. A surgical apparatus for accessing the spinal foramen comprising:
an elongate body extending substantially along a first axis with a cross-sectional diameter of at least 3.0 mm, said body having a proximal end and a distal end, said distal end comprising a tip that is sufficiently sharp to puncture disc tissue thereby anchoring said apparatus in said tissue, and a conduit having a cross-sectional diameter of at least 2.0 mm positioned along the distal one-eighth of said body, said conduit extending substantially along a second axis and traversing said apparatus, said second axis positioned at an acute angle relative to said first axis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A surgical apparatus for accessing the spinal foramen comprising:
an elongate body extending substantially along a first axis with a cross-sectional diameter of at least 3.0 mm, said body having a proximal end and a distal end, wherein said elongate body is hollow, forming a working diameter in said device and a conduit having a cross-sectional diameter of at least 2.0 mm positioned along the distal one-eighth of said body, said conduit extending substantially along a second axis and traversing said apparatus, said second axis positioned at an acute angle relative to said first axis. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
Specification