Patent ID: 8517955
Filing Date: 2013-08-27
Classification: A61B,A61M,A61N

Abstract:
1. A tissue sampling device, configured to have multiple set penetration depths, the device comprising: a sheath being flexible to advance through tortuous anatomy; a shaft extending in the sheath, wherein the shaft has a lumen and where the shaft and sheath are moveable relative to each other; a coring tip located at a distal end of the shaft, the coring tip having a tissue penetrating distal end and an axially disposed cavity to excise a tissue sample as the coring tip is advanced axially; a handle assembly comprising a sheath hub and a coring hub moveably coupled thereto, the sheath hub located on the sheath and the coring hub located on the shaft, where the sheath hub and coring hub each include a grip surface located on the respective hubs to allow for a single handed movement of the coring hub relative to the sheath hub for moving the shaft relative to the sheath and driving the coring tip forward wherein the forward driving of the coring tip can cut a tissue sample and capture the cut tissue sample in the cavity of the coring tip, where a length of the shaft and coring hub relative to a length of the sheath and the sheath hub is selected such that when the sheath hub is spaced a maximum distance from the coring hub, the coring tip is located within the sheath and when the sheath hub is spaced a minimum distance from the coring hub, the coring tip advances from the sheath; and the coring hub further comprising at least a plurality of recesses each configured to removably nest a stop member, the plurality of recesses being located along a length of the coring hub, such that when the stop member is in one of the recesses, the stop member limits an advancement distance that the coring tip advances from the sheath.