Apparatus for decompressing herniated intervertebral discs
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United States of America Patent
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Jan 27, 2004
Issued Date -
N/A
app pub date -
Dec 17, 2001
filing date -
Jun 16, 1999
priority date (Note) -
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Abstract
The invention provides a method of and an apparatus for removing bone, capsule ligaments from a co-operating pair of superior and inferior articulating processes (also called facet joints) of the spine to create a path for postero-lateral endoscopic access to the vertebral foramen and to the epidural space of the spinal canal; successively advancing tools (64) of an increasing diameter along the path; advancing through a working cannula (40) of an endoscope in order to visualize the herniated disc material and to check for the presence of nerve roots or dural sac; and engaging soft tissue with a tool in the working cannula, the soft tissue deriving from the herniated disc, and withdrawing the tissue through the cannula, hereby to relieve pressure on nerve structures within the vertebral foramen and spinal canal.
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