Patent ID: 7520886

Claim:
An endoscopic cutting device comprising: an inner catheter including an inner wall having a distal opening formed longitudinally through the side of the inner wall, the inner wall further having a cutting blade moveably disposed thereon and biasingly extending through the opening, the cutting blade including a first cutting edge, the inner wall having a receiving member disposed thereon, the receiving member including a receiving blade having a second cutting edge, the receiving member being configured to cooperatively receive the cutting blade, wherein the first cutting edge engagingly contacts the second cutting edge to cut; and an outer catheter including an outer wall having a proximal end and an open distal end, the open distal end being open to allow clearance for facilitating longitudinal movement of the outer catheter relative to the inner catheter, the outer wall being moveably disposed about the inner catheter, the outer wall having an aperture formed longitudinally through the side of the outer wall, the aperture being separate from the open distal end and formed proximal to the open distal end through the outer wall, the aperture of the outer wall being configured to moveably align with the distal opening of the inner wall for allowing the cutting blade to biasingly extend through the distal opening, the outer catheter being slidably retractable relative to the inner catheter to force the first cutting edge of the cutting blade inward and biasingly engage the second cutting edge of the receiving blade to cut.