Apparatus and method for tissue adhesion

摘要

An array of a plurality of shape memory material microposts have a proximal end configured to be secured to a substrate with a tissue penetrating distal end. The microposts further have a deployment state with the microposts in a substantially straightened configuration with a substantially smooth and continuous outer surface which is substantially parallel to adjacent microposts and an engaged state wherein at least a section of the microposts assume a configuration that is not substantially parallel to adjacent microposts or is not substantially straight with a substantially smooth and continuous outer surface so as to mechanically capture tissue adjacent thereto.

主权项

1. A tissue adhesion device, comprising:
a substrate having a contact surface; and an array of microposts extending from the contact surface of the substrate, said microposts fabricated from a shape memory material and having a proximal end secured to the substrate and having a sharpened tissue penetrating distal end, each micropost having a deployment state with the microposts in a substantially straightened configuration extending substantially perpendicular from the substrate and substantially parallel to adjacent microposts during penetration of tissue and an engaged state activated through shape memory transition after penetration wherein a distal section of the micropost engages to mechanically capture tissue adjacent thereto and said microposts are no longer substantially parallel to adjacent microposts and no longer in a straightened configuration.