US Patent 7419498 Quick release knot attachment system

A medical delivery system for delivering or retrieving a medical implant. In one embodiment, the medical delivery system includes a tube having a lumen; an implant; and a suture releasably joined to the implant, the suture comprising a first end, a second end, and a releasable knot, wherein tension applied to the first end of the suture collapses at least a portion of the implant for introduction into the tubular lumen and tension applied to the second end of the suture releases the implant.