The invention discloses a coronary
medicine balloon dilatation catheter, and belongs to the technical field of
medical instruments. In order to solve the problems that an existing
drug balloon is high in
blood flow blocking risk, large in
drug loss and uneven in
drug distribution, the
balloon dilatation catheter comprises a
catheter body, a dilatation balloon, a
drug delivery catheter, a
drug storage bin, a driving connecting rod, a connecting ring and a guiding head. The dosing
catheter protrudes out of the periphery of the dilatation balloon at intervals, the flexible side wall of the
medicine storage bin communicates with the
liquid injection cavity channel, and the driving connecting rod drives the dosing catheter to rotationally apply
medicine through spiral transmission; the catheter body is provided with an independent
blood flow cavity channel and a blood inlet, and a gap formed by the catheter body and the administration catheter forms a double-channel
blood flow path. The invention realizes the
synergy of vasodilatation, accurate and uniform administration and continuous blood
perfusion, reduces drug loss and non-targeted deposition, reduces
myocardial ischemia complications and postoperative
restenosis risk, is simple and convenient to operate, and is suitable for various
coronary heart disease treatment scenes.