A device for percutaneously excising tissue. In an embodiments the device
comprises an outer tubular. In addition, the device comprises an inner
tubular slidingly received within the outer tubular, wherein the inner
tubular has a distal end including an upper member and a lower member.
Further, the device includes an open position with the distal end fully
extended from the outer tubular, and a closed position with the distal
end disposed within the outer tubular, wherein the upper member is biased
away from the lower member and is disposed at an open angle .theta..sub.O
relative to the lower member when the device is in the opened position.