2 results about "Double balloon catheter" patented technology

The application relates to the technical field of medical supplies and particularly discloses a double-layer balloon catheter which comprises a catheter seat, a catheter, a first balloon body and a second balloon body, the catheter is connected with the catheter seat, the first balloon body and the second balloon body are coaxially nested to form a double-layer balloon body structure which is sleeved outside the catheter, the first balloon body forms a first cavity, the second balloon body is located at the outer layer, the second balloon body and the first balloon body form a second cavity, the catheter seat is provided with a guide channel, a first communicating nozzle and a second communicating nozzle; gas can be introduced into the first cavity through the first communicating nozzle to simultaneously expand the first balloon body and the second balloon body, so that the folds and dead angles are eliminated, the folding and forming of the product are facilitated, and when the double-layer balloon catheter is used clinically, filling liquid can be introduced into the second cavity through the second communicating nozzle, the second cavity can be extruded when being filled, the residual gas in the first cavity is discharged through the first communicating nozzle, the filling liquid can completely and dead-angle-free fill the second cavity, and the developing blind area under X-ray perspective is completely eliminated.