Detachable dilator blade

摘要

A tissue retraction system includes a dilator and a first retractor member and a retraction assembly. The dilator is configured to be inserted into a tissue body and also includes at least one engagement member. The first retractor member includes a body and at least one engagement member that is configured to attach to the at least one engagement member of the dilator so as to removably attach the retractor member to the dilator body. The retraction assembly includes a retractor body and at least a second retractor member that is movably supported by the retractor body. The retractor body is configured to be attached to the first retractor member. The tissue protection system may also include a neuromonitoring member configured to determine a characteristics of the tissue.

主权项

1. A tissue retraction system configured to dilate a tissue body, the tissue retraction system comprising:
a dilator configured to be inserted into the tissue body toward a surgical site, the dilator including a dilator body that is elongate along a respective longitudinal direction and sized to dilate the tissue body, the dilator body defining a proximal end and a distal end that is spaced from the proximal end along the respective longitudinal direction, and the dilator body terminates at first and second dilator sides that extend between the proximal and distal ends, the dilator further including at least one engagement member that is recessed along at least one of the dilator sides; a first retractor member that includes a body that is elongate along the respective longitudinal direction and at least one engagement member that is configured to attach to the at least one engagement member of the dilator so as to removably attach the first retractor member to the dilator body along the respective longitudinal direction, the first retractor member and the dilator cooperate so as to define a passageway when the first retractor member is attached to the dilator body, wherein one of the at least one engagement members of the dilator and the first retractor member defines a protrusion that is elongate along the respective longitudinal direction and the other of the at least one engagement members of the dilator and the first retractor member defines a groove that is elongate along the respective longitudinal direction and receives the protrusion so as to removably attach the first retractor member to the dilator; and a retractor assembly including a retractor body and at least a second retractor member that is movably supported by the retractor body, the retractor body configured to be attached to the first retractor member, wherein the retractor body is configured so as to cause the second retractor member to splay away from the first retractor member when the first retractor member is attached to the retractor body.