Patent ID: 8262587

Claim:
An endoluminal device comprising: a distal inner portion having a longitudinal axis and defining a plurality of chambers configured to receive a tissue sample; a distal outer portion defining an opening and a cutting edge adjacent the opening, the distal outer portion being rotatably movable relative to the distal inner portion; and a plurality of vacuum lumens, wherein at least one of the plurality of chambers is fluidly connected to at least one of the plurality of vacuum lumens at an interface, wherein a diameter of the at least one vacuum lumen at the interface is smaller than a diameter of the at least one chamber; wherein each of the plurality of chambers has an opening that faces a direction transverse to the longitudinal axis; and wherein the opening of the distal outer portion is configured to rotate over and expose one of the plurality of chambers when the distal outer portion covers another chamber of the plurality of chambers.