System and method for transapical access and closure

摘要

Embodiments are described for creating and closing tissue access ports, such as transapical access ports, which involve placement of an introducer across the subject tissue structure, and deployment of a controllable port closure device assembly configured to remain in place with a ratcheting mechanism, and to hold the tissue surrounding the previous access port location closed against a sealing disc with proximal and distal strut assemblies, after the introducer has been removed.

主权项

1. A system for providing surgical access across a wall of a tissue structure, comprising:
a. a delivery member having proximal and distal ends; b. a plurality of helical members, each having proximal and distal ends and a helical shape, each proximal end coupled to the delivery member distal end, each distal end extending distally of the delivery member distal end; c. a plurality of anchor members removably coupled to the helical member distal ends; and d. a plurality of suture members coupled distally to a portion of one of the anchor members and extending proximally to a position wherein at least a portion of each may be freely manipulated by an operator; wherein upon rotation of the delivery member in a first direction, the helical members and coupled anchor members are advanced across at least a portion of the wall of the tissue structure, pulling along the distal portions of the suture members in a deployed suture pattern which remains coupled to the anchor member; and wherein upon rotation of the delivery member in a second direction opposite to the first direction, a reverse load is applied to the delivery member and coupled plurality of helical members which causes the plurality of anchor members to become decoupled from the helical members, such that further rotation in the second direction causes removal of the helical members and delivery member while the anchor members and suture member distal portions remain positioned across the portion of the wall of the tissue structure.