Guide pin for guiding instrumentation along a soft tissue tract to a point on the spine
First Claim
1. A guide pin assembly for guiding instrumentation along a soft tissue tract to a point on the spine, comprising:
- a guide pin introducer comprising an introducer handle and a rigid elongate introducer tube extending from the introducer handle, the introducer tube having a introducer tube length extending between an introducer tube proximal end and an introducer tube distal end, the introducer tube length configured to extend from a skin incision near the paracoccygeal region through the pre-sacral space to an anterior target point on a sacral vertebral body, the guide pin introducer defining a lumen having a lumen diameter;
a guide pin slideably positionable within the lumen of the guide pin introducer, comprising;
a solid elongate rod, having a rod outer diameter less than the guide pin introducer lumen diameter, a rod length extending between a rod proximal end and a rod distal end, the rod length being greater than the introducer tube length;
a sharpened tip on the rod distal end;
a removable guide pin handle releasably attached to the rod proximal end and configured to allow the guide pin introducer to be proximally withdrawn over the rod proximal end when the guide pin handle is removed from the rod proximal end;
a guide pin proximal stop positioned on the guide pin such that the sharpened tip extends distally of the introducer tube distal end; and
a rotational alignment guide, for maintaining the guide pin in a predetermined rotational orientation with respect to the guide pin handle; and
a blunt tipped stylet having no lumen extending longitudinally therethrough, slideably positionable within the lumen of the guide pin introducer and comprising a blunt tipped stylet outer diameter less than the guide pin introducer lumen diameter and a blunt tipped stylet proximal stop positioned on the blunt tipped stylet such that a distal end of the blunt tipped stylet extends distally of the introducer tube distal end;
wherein the blunt tipped stylet outer diameter is substantially the same as the rod outer diameter.
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Accused Products
Abstract
Disclosed are surgical tools, tool sets and methods for percutaneously accessing and preparing treatment sites within the spine for subsequent treatment procedures. The treatment site may be an inter-vertebral motion segments in the lumbar and sacral regions of the spine. The tool set may comprise introducer tools and bone dilators for accessing and tapping into a targeted site, such as, for example, the anterior surface of the S1 vertebral body. The tool set may also comprise cutters and extractors for preparing the treatment site for subsequent treatment procedures. The tool set may additionally comprise a bone graft inserter, an exchange system, and/or a temporary distraction tool for further preparing the treatment site for subsequent treatment procedures.
446 Citations
25 Claims
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1. A guide pin assembly for guiding instrumentation along a soft tissue tract to a point on the spine, comprising:
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a guide pin introducer comprising an introducer handle and a rigid elongate introducer tube extending from the introducer handle, the introducer tube having a introducer tube length extending between an introducer tube proximal end and an introducer tube distal end, the introducer tube length configured to extend from a skin incision near the paracoccygeal region through the pre-sacral space to an anterior target point on a sacral vertebral body, the guide pin introducer defining a lumen having a lumen diameter; a guide pin slideably positionable within the lumen of the guide pin introducer, comprising; a solid elongate rod, having a rod outer diameter less than the guide pin introducer lumen diameter, a rod length extending between a rod proximal end and a rod distal end, the rod length being greater than the introducer tube length; a sharpened tip on the rod distal end; a removable guide pin handle releasably attached to the rod proximal end and configured to allow the guide pin introducer to be proximally withdrawn over the rod proximal end when the guide pin handle is removed from the rod proximal end; a guide pin proximal stop positioned on the guide pin such that the sharpened tip extends distally of the introducer tube distal end; and a rotational alignment guide, for maintaining the guide pin in a predetermined rotational orientation with respect to the guide pin handle; and a blunt tipped stylet having no lumen extending longitudinally therethrough, slideably positionable within the lumen of the guide pin introducer and comprising a blunt tipped stylet outer diameter less than the guide pin introducer lumen diameter and a blunt tipped stylet proximal stop positioned on the blunt tipped stylet such that a distal end of the blunt tipped stylet extends distally of the introducer tube distal end; wherein the blunt tipped stylet outer diameter is substantially the same as the rod outer diameter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A guide pin assembly for advancing through a paracoccygeal access to a site on the anterior surface of the sacrum, comprising:
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an elongate guide pin introducer tube extending distally from an introducer handle, the guide pin introducer comprising a lumen with a lumen diameter; a solid guide pin having no lumen extending longitudinally therethrough, slideably positionable within the lumen of the guide pin introducer tube, the solid guide pin comprising; an elongate body having an elongate body diameter, a proximal end and a distal end; a guide pin extension, the guide pin extension comprising a guide pin extension diameter no larger than the elongate body diameter configured to be slideably positionable within the lumen of the guide pin introducer tube for removal of the guide pin introducer tube over the guide pin extension; a releasable coupling on the proximal end of the elongate body of the guide pin releasably connected to the guide pin extension; a radially asymmetrical pointed tip on the distal end; and an indicium corresponding to the rotational orientation of the elongate body is carried by the proximal end of the elongate body in order to determine the orientation of the pointed tip of the elongate body; and a blunt tipped stylet slideably positionable within the lumen of the guide pin introducer tube, the blunt tipped stylet having a stylet diameter, the stylet diameter being substantially the same as the elongate body diameter. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification