Self-expanding hemostatic devices and methods for fascia and vessel passages

A method for vascular closure, comprising:

• advancing an elongate shaft of an inner hemostatic assembly of a vascular closure device over a guidewire and through a passage in a tissue layer which is disposed adjacent an access hole in a wall of a patient's blood vessel until a distal end of the elongate shaft is disposed within the patient's vessel and a self-expanding plug disposed on a distal section of the elongate shaft is disposed within the access hole in an expanded state and is reducing leakage of blood from the access hole;
• positioning a distal end of an outer housing of the vascular closure device adjacent the passage in the tissue layer;
• deploying a plurality of anchor deployers from a distal section of the outer housing of the vascular closure device and engaging the tissue layer in positions disposed about the passage in the tissue layer with respective anchors of the plurality of anchor deployers;
• securing the anchors to the tissue layer in the positions disposed about the passage in the tissue layer;
• drawing the anchors closer together with filaments secured to each of the anchors so as to draw the anchors and respective portions of the tissue layer secured to each of the anchors together thereby reducing the passage in the tissue layer;
• proximally withdrawing the inner hemostatic assembly from the patient's vessel and into the inner lumen of the outer housing until the elongate shaft is no longer disposed within the access hole of the vessel or passage of the tissue layer;
• and
• deploying a tissue grip to secure the portions of the tissue layer which have been drawn together thereby closing the passage in the tissue layer and achieving vascular closure of the access hole in the blood vessel,
• wherein the vascular closure device further comprises a lateral surface configured to extend radially from a distal section of the elongate shaft distal of the self-expanding plug and further comprising radially extending the lateral surface from the elongate shaft while the lateral surface is disposed within the blood vessel to provide a reference point between relative axial positions of the wall of the blood vessel and the self-expanding plug.