Balloon stent installation device and stent installation method

A balloon stent installation device, which is configured to install a self-expandable stent to a lesion site of a blood vessel, wherein the balloon stent installation device comprises:

• a balloon dilatation catheter provided with a first through hole in a length direction, wherein an inlet is disposed at a proximal end of the first through hole, and an outlet is disposed at a distal end of the first through hole;
• wherein an expansion part is disposed at a distal end of the balloon dilatation catheter, the self-expandable stent is slidably mounted in the first through hole, and the self-expandable stent is located at the distal end of the balloon dilatation catheter;
• and
• a stent release tube, wherein the stent release tube is configured to penetrate the first through hole through the inlet and is slidably disposed in the first through hole of the balloon dilatation catheter, and a distal end of the stent release tube abuts against the self-expandable stent,
• wherein the stent release tube is provided with a second through hole along the length direction, and the balloon dilatation catheter and the stent release tube are configured to enable a micro guidewire to be inserted sequentially through the outlet of the first through hole, the self-expandable stent, and the second through hole.