Biopsy needle insertion guide and method of use in prostate cryosurgery

摘要

A biopsy needle insertion guide and method of use with an ultrasound probe in medical procedures to accurately position biopsy needles in internal tissues. The insertion guide comprises a body which is removably mountable on an ultrasound probe and which comprises a clamp affixable about the probe and an elongated adjustment guide extending from the clamp in a direction perpendicular to the probe. A slide block engages the adjustment guide and is slidably adjustable therealong and a biopsy needle holder and guide assembly is carried by the slide block and is adjustably extendable from the slide block in a direction parallel to the probe. A method of use is described wherein the insertion guide is used to accurately place biopsy needles in a human prostate, the needles being then used to accurately place cryoprobes in the prostate for cryogenic surgery of the gland.