Abstract: A torque device that has good manual operability and rather easily attaches to an elongated body such as a guide wire. A torque device for holding an elongated body comprises a first member and a second member in which is formed a connected space through which the elongated body can be inserted in the length direction. The first member and the second member are able to rotate with each other in a state in which the elongated body is being held, and have an opening that allows the space to communicate with the outside in the radial direction. At least one of the first member and the second member has a diameter decreasing portion that reduces the diameter of the space as a result of the first member and the second member rotating with each another.

Abstract: A method and a medical elongate body are configured to prevent stagnation or turbulence of blood flow in a recess of a rugged pattern formed in a blood vessel due to bulging of a blood vessel wall at a lesion part of the blood vessel. The method involves partitioning an inside of the blood vessel into upstream and downstream sides of the recess, and introducing gel into the recess to at least partially fill the recess. A blood vessel lumen forming method and medical elongate body to form such a lumen are other aspects of the disclosure and involve introducing gel into the recess to at least partially fill the recess with the gel, and drilling the gel to remove at least some of the gel to form a passage and secure blood flow in the blood vessel.

Abstract: A method and a medical elongate body are configured to prevent stagnation or turbulence of blood flow in a recess of a rugged pattern formed in a blood vessel due to bulging of a blood vessel wall at a lesion part of the blood vessel. The method involves partitioning an inside of the blood vessel into upstream and downstream sides of the recess, and introducing gel into the recess to at least partially fill the recess. A blood vessel lumen forming method and medical elongate body to form such a lumen are other aspects of the disclosure and involve introducing gel into the recess to at least partially fill the recess with the gel, and drilling the gel to remove at least some of the gel to form a passage and secure blood flow in the blood vessel.