A kit for treating spinal stenosis comprising: a cannula; and a tissue excision device having a distal portion configured to be inserted through the cannula, the tissue excision device having an open position and a closed position and comprising: an outer tubular member; an inner tubular member slidably received within the outer tubular member, the outer tubular member and the inner tubular member sharing a central axis; wherein the inner tubular member has a fixed end and a distal end, the distal end including an upper member and a lower member; and a longitudinal axis of the lower member is fixed parallel to the central axis of the outer tubular member; wherein the upper member is biased away from the lower member in the open position, the upper member and the lower member each having a distal cutting end (231b, 232b); and wherein the upper member comprises a bent region; characterized in that the bent region forms a tooth near the distal cutting end of the upper member, the tooth comprising a cutting tip configured such that the cutting tip is angled toward the central axis relative to the fixed end in the open position; and the upper member and the lower member of the distal end of the inner tubular member extend from the outer tubular member in the open position, wherein the outer tubular member is configured to be advanced relative to the inner tubular member, engaging the distal end of the inner tubular member and causing the distal end to be in the closed position. a cannula; and a tissue excision device having a distal portion configured to be inserted through the cannula, the tissue excision device having an open position and a closed position and comprising: an outer tubular member; an inner tubular member slidably received within the outer tubular member, the outer tubular member and the inner tubular member sharing a central axis; wherein the inner tubular member has a fixed end and a distal end, the distal end including an upper member and a lower member; and a longitudinal axis of the lower member is fixed parallel to the central axis of the outer tubular member; wherein the upper member is biased away from the lower member in the open position, the upper member and the lower member each having a distal cutting end (231b, 232b); and wherein the upper member comprises a bent region; characterized in that the bent region forms a tooth near the distal cutting end of the upper member, the tooth comprising a cutting tip configured such that the cutting tip is angled toward the central axis relative to the fixed end in the open position; and the upper member and the lower member of the distal end of the inner tubular member extend from the outer tubular member in the open position, wherein the outer tubular member is configured to be advanced relative to the inner tubular member, engaging the distal end of the inner tubular member and causing the distal end to be in the closed position. an outer tubular member; an inner tubular member slidably received within the outer tubular member, the outer tubular member and the inner tubular member sharing a central axis; wherein the inner tubular member has a fixed end and a distal end, the distal end including an upper member and a lower member; and a longitudinal axis of the lower member is fixed parallel to the central axis of the outer tubular member; wherein the upper member is biased away from the lower member in the open position, the upper member and the lower member each having a distal cutting end (231b, 232b); and wherein the upper member comprises a bent region; characterized in that the bent region forms a tooth near the distal cutting end of the upper member, the tooth comprising a cutting tip configured such that the cutting tip is angled toward the central axis relative to the fixed end in the open position; and the upper member and the lower member of the distal end of the inner tubular member extend from the outer tubular member in the open position, wherein the outer tubular member is configured to be advanced relative to the inner tubular member, engaging the distal end of the inner tubular member and causing the distal end to be in the closed position.