| 摘要 |
An over-the-wire rapid-exchange catheter having a guidewire channel and a rupturable membrane along one side of the guidewire channel. The catheter is exchanged by withdrawing the catheter from a guiding catheter, while stripping the operative catheter from the guidewire by tearing the guidewire through the rupturable membrane. The guidewire channel provides a sealing surface for a releasable seal on the guiding catheter, avoiding the gripping of the guidewire. A replacement catheter can be threaded onto the guidewire, and the end of the guidewire can puncture the rupturable membrane at a selected location to establish a guidewire channel at the distal end of the catheter. |
