Puncture device, puncture system, operation method of puncture device, and usage method of guidewire

A puncture system comprising:

• a guide wire;
• and
• a puncture device comprising:
• a sheath configured to extend in a longitudinal axis direction;
• a needle tube, carried in the sheath, the needle tube configured to be movable in the longitudinal axis direction;
• a needle slider connected to the needle tube;
• an inner tube carried in the needle tube, the inner tube defining a lumen configured to receive the guide wire;
• a tube slider connected to the inner tube, the tube slider configured to support the inner tube such that the inner tube is movable in the longitudinal axis direction;
• and
• a locking member configured to lock the needle slider relative to the tube slider in a first state and in a second state, wherein:
• in the first state, a distal end of the inner tube is positioned in the needle tube;
• in the second state, the distal end of the inner tube is positioned to protrude from the needle tube;
• and
• the locking member is configured to prevent the tube slider to move distally relative to the needle slider in the first state.

A method for using a guide wire, the method comprising:

• forming a first hole on a first lumen of a body by a needle tube;
• forming a second hole on a second lumen of the body by the needle tube;
• disposing a tip of the needle tube into the second lumen;
• locking the needle tube relative to an inner tube in a locked state such that a tip of the inner tube is more proximal than the tip of the needle tube, wherein the tip of the inner tube is configured to be positioned in the needle tube;
• injecting a contrast medium into the inner tube with maintaining the locked state;
• unlocking the locked state;
• protruding the inner tube from the tip of the needle tube after unlocking the locked state;
• inserting the guide wire into the second lumen from the tip of the inner tube;
• and
• leaving the guide wire extending from the first lumen to the second lumen by removing the needle tube and the inner tube from the first hole and the second hole.