Patent ID: 7300454

Claim:
A catheter apparatus for percutaneous coronary intervention capable of accurately positioning stent and balloon in a desired position, comprising: an introducer set 130 introduced to an opening of the human artery; a guiding catheter 140 introduced through the introducer set 130 and into the artery so as to extend a predetermined distance into the artery; a Y-connector 110 having a main tube 111 and a side tube 112 which branches off from the main tube 111 , the Y-connector being coupled with the guiding catheter 130 ; a guidewire 160 introduced into the main tube 111 and the guiding catheter 140 ; a balloon catheter 150 introduced into the guiding catheter 140 , having a balloon at the distal end thereof and a passage formed longitudinally through the balloon catheter, the passage providing a route for the guidewire 160 ; a minute adjustment portion 190 including a nut 192 and a bolt 191 engaging with a screw thread formed on the inner walls of the nut 192 and rotating so as to move backward or forward through the nut 192 , the bolt 191 having a through hole 191 b formed longitudinally thereinside so that the balloon catheter 150 passes through the through hole 191 b; a combining frame 120 having two legs, one leg being coupled with the circumferential surface of the main tube 111 and the other leg being coupled with the circumferential surface of the nut 192 ; and a clamping portion for holding the balloon catheter 150 passing through the minute adjustment portion 190 firmly in position.