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US5772661: Methods and instrumentation for the surgical correction of human thoracic and lumbar spinal disease from the antero-lateral aspect of the spine

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Filing Information

Inventor(s) Gary Karlin Michelson ·
Assignee(s) None listed in document.
Attorney/Agent(s) Anten, Esq.; Lewis ·
Primary Examiner Michael A. Brown ·
Application Number US8394836
Filing date 02/27/1995
Issue date 06/30/1998
Predicted expiration date 06/13/2008
U.S. Classifications 606/61  · 623/17  ·
International Classifications A61B 1756  ·
Kind CodeA
International Classifications 60660;61;72-79 ·
Related U.S. Application DataRELATED APPLICATIONS
This application is a continuation in part of copending U.S. application Ser. No. 08/074,781 filed on Jun. 10, 1993, which is a continuation in part of U.S. application Ser. No. 07/698,674 filed on May 10, 1991 which is a divisional of application Ser. No. 07/205,935 filed on Jun. 13, 1988, now U.S. Pat. No. 5,015,247 all of which are incorporated herein by reference. This application is also a continuation in part of copending U.S. application Ser. No. 08/219,626 filed on Mar. 28, 1994 which is incorporated herein by reference.
87 Claims, No Drawings


Abstract

An improved method and instrumentation for performing spinal surgery, including discectomy, interbody fusion and rigid internal fixation of the spine, from the lateral aspect of the spine is disclosed. The surgical procedure can be performed through a very small incision. The instrumentation of the present invention, all of which is inserted from a lateral position into the spine in the preferred embodiment, comprises a guide pin, a distractor, an extended outer sleeve, an inner sleeve an adjustable drill and an implant driver. The distractor of the present invention is driven into the disc for spacing apart and realigning the adjacent vertebrae. It further functions as an alignment rod for inserting the extended outer sleeve which is a hollow tubular member capable of maintaining said spacing and alignment of two adjacent vertebrae and defines a protected space through which subsequent instruments which may include, but are not limited to, a drill and a diameter reducing inner sleeve may be passed, as well as a spinal implant. The remainder of the surgical procedure consisting of the removal of spinal material across the disc, fusion, and rigid internal stabilization via the implant may all be performed via the closed space within the extended outer sleeve.

Independent Claims | See all claims (87)

  1. 1. A method for inserting an interbody intraspinal implant into a disc space between adjacent vertebrae located within a human thoracic and lumbar spine having an anterior aspect and a posterior aspect being divided by a plane through transverse processes of the adjacent vertebrae, and having a lateral aspect, the method comprising the steps of:penetrating from a position anterior to the transverse processes the lateral aspect of a spinal disc intermediate the adjacent vertebrae;removing from between the adjacent vertebrae at least a portion of the spinal disc to form a laterally facing opening; andinserting from a position anterior to the transverse processes of the adjacent vertebrae said implant into the laterally facing opening.
  2. 55. The method of claim of 1 further comprising the step of utilizing a radiographic imaging device during at least a portion of the method.
  3. 68. A method for inserting an interbody intraspinal implant into a disc space between adjacent vertebrae located within a human thoracic and lumbar spine having an anterior aspect and a posterior aspect being divided by a plane through transverse processes of the adjacent vertebrae, and having a lateral aspect, the method comprising the steps of:engaging from a position anterior to the transverse processes of the adjacent vertebrae into the lateral aspect of the spine a tubular member;removing from a position anterior to the transverse processes of the adjacent vertebrae at least a portion of the spinal disc through said tubular member to form a laterally facing opening; andinserting from a position anterior to the transverse processes of the adjacent vertebrae at least one implant into the laterally facing opening.
  4. 72. A method for inserting an interbody intraspinal implant into a disc space between adjacent vertebrae located within a human thoracic and lumbar spine having an anterior aspect and a posterior aspect being divided by a plane through transverse processes of the adjacent vertebrae, and having a lateral aspect, the method comprising the steps of:driving from a position anterior to the transverse processes of the adjacent vertebrae toward the lateral aspect of a spinal disc intermediate the adjacent vertebrae an extended outer sleeve having means for penetrably engaging the spine along its lateral aspect;removing from a position anterior to the transverse processes of the adjacent vertebrae through said extended outer sleeve at least a portion of the spinal disc to create a space; andinserting from a position anterior to the transverse processes into the lateral aspect of the spine at least one implant, said implant occupying at least in part the space created by the removing step.
  5. 78. A method for inserting an interbody spinal implant into a disc space between two adjacent vertebrae located within a human thoracic and lumbar spine having an anterior aspect and a posterior aspect being divided by a plane through transverse processes of the adjacent vertebrae, and having a lateral aspect, the method comprising the steps of:inserting from a position anterior to the transverse processes of the adjacent vertebrae a distractor into the lateral aspect of the disc space to provide for appropriate spacing apart of the adjacent vertebrae;inserting from a position anterior to the transverse processes of the adjacent vertebrae an extended outer sleeve into contact with the lateral aspect of the spine;driving said extended outer sleeve into engagement with the spine;removing said distractor;removing from a position anterior to the transverse processes of the adjacent vertebrae at least a portion of a spinal disc intermediate the adjacent vertebrae to form a lateral facing opening;inserting from a position anterior to the transverse processes of the adjacent vertebrae an implant into the disc space intermediate the adjacent vertebrae through the laterally facing opening; andremoving the extended outer sleeve.

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Patent Family

Document NumberAssigneeInventorsIssue/Pub Date
US5772661 Gary Karlin Michelson Jun 1998
US20030158553 Gary Michelson Aug 2003