An endoscopic cutting device is disclosed. The device comprises an inner catheterincluding an inner wall having an opening formed therethrough. The inner wallfurther has a cutting blade moveably disposed thereon and biasingly extendsthrough the opening. The inner wall has a receiving member disposed thereon andis configured to cooperatively receive the cutting blade. The device furthercomprises an outer catheter including an outer wall moveably disposed aboutthe inner catheter. The outer wall has an aperture formed therethrough. The apertureis configured to moveably align with the opening of the inner wall for allowingthe cutting blade to biasingly extend through the opening and biasingly engagethe cutting blade with the receiving member to cut.
