Suture Delivery Device
A suture-based vessel closure device is configured to close a carotid artery puncture site. The suture-based vessel closure device can place one or more sutures across the vessel access site such that, when the suture ends are tied off after sheath removal, the stitch or stitches provide hem ostasis to the access site. The sutures can be applied either prior to insertion of a procedural sheath through the arteriotomy or after removal of the sheath from the arteriotomy.
1 . A device for closing an aperture in a wall of a blood vessel, the device comprising:
a body having a distal tip sized and shaped to be inserted through an arteriotomy into an artery;
at least one suture element held within the body; and
at least one suture capture rod within the body, the suture capture rod being operatively associated with the suture element and arranged to pass the suture element through the vessel wall such that opposed portions of the suture element extend from the vessel wall and the suture element defines a knot between opposed portions thereof after the suture element has been passed through the vessel wall; and;
a guidewire lumen located in the distal tip, wherein the guidewire lumen forms a first opening at a distalmost end of the distal tip and a second opening located between the distalmost end and a vessel wall locator device that positions against a blood vessel when the device is in use.
2 . A device as in claim 1 , further comprising a valve located within the guidewire lumen, wherein the body permits passage of the guidewire into the lumen through the second opening, and prevents blood flow out of the second opening when a guidewire is positioned within the guidewire lumen.
3 . A device as in claim 1 , wherein the distal tip is flexible to allow the distal tip to conform to a curvature of the guidewire as the distal tip is advanced into the artery.
4 . A device as in claim 3 , wherein a flexibility of the distal tip varies over the length of the distal tip with the flexibility of the distal tip increasing moving toward the distalmost and of the distal tip.
5 . A device as in claim 1 , wherein the distal tip has a length of about 3 cm to limit an insertable portion of the device to about 4-5 cm, wherein the insertable portion is the portion of the device that inserts through the arteriotomy.
6 . A device as in claim 1 , wherein the distal tip has a length of about 5-7 cm.
7 . A device as in claim 1 , wherein the suture element extends into and out of the vessel wall locator.
8 . A device as in claim 1 , wherein the suture element extends into an out of at least one lateral end of the vessel wall locator.
9 . A device as in claim 1 , wherein the entire guidewire lumen extends only through the distal tip.
10 . A device as in claim 1 , wherein no portion of the guidewire lumen is positioned proximal of the vessel wall locator.
11 . A device as in claim 3 , wherein the distal tip has a flexibility that is greater than a flexibility of the guidewire.
12 . A device as in claim 3 , wherein the guidewire has a stiffness that is greater than a stiffness of the distal tip.