Delivery catheter, implant delivery system, and working method

Abstract

A delivery catheter (1), an implant delivery system and methods of operation. A balloon structure in the delivery catheter (1) includes an expandable component and a balloon body (140). The expandable component is disposed within the balloon body (140) so as to be expandable therein. Moreover, the expandable component is sleeved over a distal end of a guidewire tube (210). An implant is disposed over the balloon body (140) and axially restrained over a middle portion of the expandable component during delivery. The expandable component is configured to provide a radially outward support force from a middle portion of the balloon body (140) during expansion so as to bring internal environments of the balloon body (140) respectively at distal and proximal end thereof into communication. This facilitates stable and uniform and hence symmetric expansion of the implant. Moreover, it is helpful in addressing the risk of sudden axial movement of the implant with respect to a delivery system during delivery and release.

Dependencies are inferred from the claim text.