Patent ID: 9433401
Filing Date: 2016-09-06
CPC Classification: A61B

Claim Text:
1. A device for use with a biopsy cannula having a non-circular cross-section, the device comprising: a guiding portion defining a shaft aperture sized to receive and at least partially circumferentially encompass the biopsy cannula; a locking member defining an elongate and non-circular through hole configured to receive the biopsy cannula, wherein the through hole is non-circular between a front surface and a rear surface defining the through hole, wherein the through hole has a first transverse axis having a first length and a second transverse axis having a second length, wherein the first length is greater than the second length, wherein the locking member further defines a plane, wherein the plane is perpendicular to one or more of the first and second transverse axis, wherein the locking member comprises at least two ribs extending inwardly within the through hole and oriented parallel relative to the plane in opposing corners of the through hole, wherein the locking member is configured to move the at least two ribs toward the biopsy cannula upon relative rotation between the biopsy cannula and the locking member toward a locking position, wherein the at least two ribs are further configured to bind against the biopsy cannula upon the biopsy cannula and the locking member reaching the locking position, wherein the locking member and guiding portion are configured to restrict the depth of insertion of the biopsy cannula through the guiding portion when the at least two ribs of the locking member are bound against the biopsy cannula in the locking position.