Steerable Shape Sensing Biopsy Needle

摘要

A biopsy needle has a central axis and includes one or more sensing regions, each sensing region formed by a plurality of sensing optical fibers located over a particular extent of said central axis and inside the outer shell of the needle. The sensing optical fibers are coupled to a wavelength interrogator. A steerable catheter has a central axis and outer shell, the outer shell coupled to a plurality of optical fibers in sensing regions and actuation regions, the sensing regions formed over particular extents of the central axis by bonding gratings to the inner surface of the outer shell, and the actuation regions formed by coupling optical energy into shape memory alloys bonded to the outer shell.

主权项

1) A biopsy needle having:
an outer shell; an inner support having a central axis and a plurality of substantially elongated grooves located at a substantially uniform included angle with respect to said central axis and to another said elongate groove; one or more sensing regions, each said sensing region operative over a particular extent of said central axis, each said sensing region formed by bonding a grating of each said optical fiber in said sensing region to said inner support; a wavelength interrogator accepting reflected light from said gratings in each said particular sensing region, said wavelength interrogator converting a reflected wavelength from each said fiber into a needle displacement location.