Patent ID: 7896889
Filing Date: 2011-03-01
Classification: A61B

Abstract:
1. An apparatus comprising: a base, sized and shaped to be secured in or about a pre-existing entry portal in a human or animal subject that includes a target within the subject beyond the entry portal, the entry portal defining an entry plane, and the target defining a target plane that is substantially parallel to the entry plane; and an instrument guide, coupled to the base and configured to be oriented with respect to the base to define a first axis extending through the instrument guide and the entry portal toward the target, the instrument guide including a first lumen extending through the instrument guide coaxially to the first axis, the instrument guide also including a second lumen extending through the instrument guide to define a second axis nonparallel to the first axis, the second axis extending through the same entry portal as the first axis, the instrument guide additionally including a third lumen extending through the instrument guide to define a third axis nonparallel to the first and second axes, the third axis extending through the same entry portal as the first and second axes, the third axis intersecting the first and second axes at a point spaced apart from the instrument guide, wherein the instrument guide is coupled to the base with at least an adjustable coupling configured to position the instrument guide at an adjustable height above the entry portal, the adjustable coupling including a sleeve on the instrument guide that is received in a collar on the base.