Systems and Methods for Percutaneous Access, Stabilization and Closure of Organs

摘要

Systems and methods for accessing, stabilizing and sealing a device attached to a tissue surface comprising a tissue attaching device having an outer base ring defining an opening therethrough and a distally projecting tissue attachment element. The systems variously utilize annular sealing flanges distally attached to the outer base ring outside or inside the tissue attachment element to create a fluid tight seal. The systems variously utilize coils with regions of differing pitch to create sealing tissue pressure. Methods for installing an apical attaching device with a transapical port into a patient, comprising assessing the patient's viability for installation of the apical attaching device by determining an Index of Tissue Elasticity (ITE).

主权项

1. A system for sealing a device attached to a tissue surface comprising:
a tissue attaching device having an outer base ring defining an opening therethrough and a distally projecting tissue attachment element; and an annular sealing flange distally attached to the outer base ring outside the tissue attachment element defining a first circumference and distally projecting at an inward angle to define a second circumference for interfacing with the tissue surface surrounding the attachment element, wherein the second circumference is smaller than the first circumference to create a fluid tight seal that is strengthened when fluid pressure is increased inside the base ring.