| abstract |
The present invention provides a delivery system for delivering a device for closing septal defects and the like. The system comprises an elongate, flexible urging member for urging the closure device through a catheter and a remotely located control means for advancing the urging member. The control means includes a threaded, generally tubular shaft connected to the urging member and a manually rotatable rotor mounted on the shaft, the rotor having threads which mate with the threads on the shaft so that rotation of the rotor through a known angle will advance the shaft, and hence the urging member, a known distance. In a preferred embodiment, the urging member includes a core wire adapted to retain a closure device prior to final deployment and a release lever for releasing the closure device from the core wire when the closure device is properly positioned. |