Patent ID: 7828745

Claim:
An endoluminal device comprising: a distal inner portion having a longitudinal axis and defining a plurality of chambers, each chamber configured to receive a tissue sample; a distal outer portion defining a cutting mechanism opening and a cutting edge fixed relative to the cutting mechanism opening, the cutting edge being configured to sever the tissue sample received in one of the plurality of chambers, the distal outer portion being axially and rotatably movable relative to the distal inner portion; and a proximal actuation mechanism for controlling axial and rotatable movement of the distal outer portion relative to the distal inner portion, wherein the cutting mechanism opening faces a direction transverse to the longitudinal axis of the distal inner portion; wherein the plurality of chambers are located at a plurality of locations along the longitudinal axis and a plurality of radial locations; wherein the proximal actuation mechanism is configured to control axial and rotatable movement of the distal outer portion relative to the distal inner portion such that, when the cutting mechanism opening aligns with and covers any single one of the plurality of chambers to allow tissue to enter the chamber, the distal outer portion completely covers and closes the remaining chambers to prevent tissue from entering the remaining chambers; and wherein at least one chamber includes a surface that at least partially inhibits movement of the tissue sample received in the chamber toward an interior of the distal inner portion.