DILATION DELIVERY SYSTEM FOR A MEDICAL DEVICE

摘要

A kit for connecting a hollow cannula 40 to a hollow organ of a patient's body may include a sheath 70 having a tapered surface defined by a plurality of flaps at its distal end. A delivery tube 50 is slidably positioned within the sheath so that the sheath and delivery tube form a sealed enclosure that entirely contains the cannula. The enclosure and the cannula may be completely purged of air. An elongated dilator 10 may project through the sealed assembly in slideable engagement with the sheath and delivery tube. After advancing the liquid-filled enclosure into the organ, the distal end of the sheath is opened by advancing the delivery tube, and the cannula is advanced until an anchor 48 at the distal end of the cannula exits the delivery tube inside the organ and opens to anchor the cannula in place. An external securement device 130 may be applied on the cannula so as to hold the wall of the organ between the expanded anchor on the inside of the wall and the external securement device on the outside of the wall.

主权项

1. A kit comprising:
(a) a sheath having a tubular body with proximal and distal ends, an axis extending between the ends and a wall defining a bore extending along the axis to the distal end of the body; and an end element disposed at the distal end of the bore, the end element including a plurality of flaps having proximal ends attached to the wall of the body at the distal end of the body and distal ends remote from the body, the flaps having a closed position in which the flaps slope inwardly toward the axis from their proximal ends toward their distal ends so that the flaps cooperatively define a surface tapering in the distal direction beyond the distal end of the body, the flaps being displaceable so as to move the distal ends of the flaps away from the axis and pivot the flaps to an open position; (b) a delivery tube having proximal and distal ends and a lumen, the delivery tube adapted for disposition within the bore of the sheath in sealing engagement with the sheath, the delivery tube being slideable distally relative to the sheath from a disengaged position to an engaged position and to force the flaps from the closed position to the open position as the delivery tube moves to the engaged position; (c) an elongated cannula having proximal and distal ends and a lumen, the cannula being adapted for disposition inside the lumen of the delivery tube; and (d) an elongated dilator adapted to fit within the lumen of the cannula with a proximal portion of the dilator extending proximally beyond the proximal ends of the cannula and delivery tube and in sealing engagement with the delivery tube proximal to the cannula.