The disclosure is related to sealing one and is opened on main body, such as blood vessel or human heart. In particular, the present invention relates to shrinkable medical closure equipment, a kind of medical system, for transmitting object. In addition, being opened on main body present disclose provides the sealing off gap of positioning object, an individual equipment is had. In one embodiment, a kind of folding medical closing device, for closing body opening (1), comprising: at least one thread (6) in a kind of network, silk or fiber, there is opening (12) by the closeable channel of the network, deliver the contractile medical closing device (1) in elongated units in the elongated member for receiving, the elongated member is sheath) it is provided.
