Patent ID: 8597206
Filing Date: 2013-12-03
Classification: A61B

Abstract:
1. A biopsy probe assembly configured for installation on a driver assembly, comprising: a biopsy probe having a sample basket arranged coaxially with a cutter cannula along a longitudinal axis; a cover having a first alignment feature; a housing slidably coupled to said cover, said housing having a second alignment feature; a cannula driver having a third alignment feature, said cannula driver being slidably coupled to said housing, said cannula driver connected to said cutter cannula to facilitate movement of said cutter cannula along said longitudinal axis; a flexible toothed rack connected to said sample basket to facilitate movement of said sample basket along said longitudinal axis; a gear train contained in said housing, said gear train including a clutch drive configured to selectively drivably couple said gear train to said flexible toothed rack; a pivot member pivotably coupled to said cannula driver, said pivot member providing selectable coupling between said cannula driver and said flexible toothed rack; a slider assembly coupled to said pivot member to operate said pivot member to facilitate said selectable coupling between said cannula driver and said flexible toothed rack via said pivot member, said slider assembly being further configured to selectively engage said clutch drive, said slider assembly including a slider driver movable between an extended position and a retracted position, said retracted position of said slider driver configured to effect engagement of said clutch drive and disengagement between said cannula driver and said flexible toothed drive, and said extended position of said slider driver effecting a disengagement of said clutch drive and an engagement between said cannula driver and said flexible toothed drive, said slider driver having a fourth alignment feature; and an alignment pin configured to facilitate manual concurrent engagement with each of said first alignment feature, said second alignment feature, said third alignment feature and said fourth alignment feature so as to lock relative positions of said cover, said housing, said cannula driver and said slider driver, wherein each of said first alignment feature, said second alignment feature, said third alignment feature, and said fourth alignment feature is one of a slot and a channel, and said alignment pin has an elongate portion with a rectangular cross section, with said elongate portion received by said first alignment feature, said second alignment feature, said third alignment feature, and said fourth alignment feature.