Filled balloon arteriotomy locator for vascular closure devices and methods

Abstract

A tissue puncture locator device includes an anchor assembly and a sealing member. The anchor assembly includes an anchor portion, a tube portion, and a filling member. The anchor portion is positioned at a distal end of the tube portion and configured for placement through a vascular incision into a vessel. The anchor member has an unexpanded configuration that permits passage through the vascular incision and an expanded configuration that limits passage through the vascular incision. The filling member is retained in the tube portion and adapted for insertion from the tube portion into the anchor member to provide the expanded configuration, and adapted for retraction from the anchor member into the tube portion to provide the unexpanded configuration. The sealing member is configured for placement adjacent the vascular incision outside the vessel.

What is claimed is: 
     
         1 . A tissue puncture closure device adapted for insertion into and sealing of a tissue puncture in an internal tissue wall that is accessible through a percutaneous incision, the device comprising:
 an anchor disposed on a distal side of the internal tissue wall;   a filling material positioned in the tissue puncture closure device and movable from a first position removed from the anchor, to a second position inserted within the anchor to expand the anchor, and back to the first position, the filling material having a random orientation in the second position;   a sealing member disposed on a proximal side of the internal tissue wall, the anchor being movable through the sealing member when the filling material is in the first position.   
     
     
         2 . The tissue puncture closure device of  claim 1 , further comprising an elongate shaft, the anchor being positioned at a distal end of the elongate shaft, the filling material being positioned in the elongate shaft in the first position. 
     
     
         3 . The tissue puncture closure device of  claim 1 , wherein the filling material is shaped as an elongate structure. 
     
     
         4 . The tissue puncture closure device of  claim 1 , wherein the filling material maintains a solid or semi-solid state when in the first and second positions. 
     
     
         5 . The tissue puncture closure device of  claim 1 , wherein the sealing member comprises a collagen material. 
     
     
         6 . The tissue puncture closure device of  claim 1 , further comprising a sheath, the sealing member being positioned in the sheath before being disposed on the proximal side of the internal tissue wall. 
     
     
         7 . The tissue puncture closure device of  claim 6 , further comprising a tamping member configured to advance the sealing member out of the sheath. 
     
     
         8 . A method of sealing a tissue puncture in an internal tissue wall accessible through a percutaneous incision, the method comprising:
 providing a tissue puncture closure device that includes an anchor portion, a filling member, and a sealing plug,   inserting the anchor portion through the tissue puncture to a distal side of the tissue puncture;   moving the filling member into the anchor portion to expand the anchor portion to a size sufficient to resist movement of the anchor portion proximally through the tissue puncture, the filling member having a random configuration within the anchor portion and a linear configuration when removed from the anchor portion;   disposing the sealing plug in the percutaneous incision adjacent a proximal side of the tissue puncture;   moving the filling member out of the anchor portion to reduce a size of the anchor portion;   withdrawing the anchor portion through the tissue puncture and sealing plug.   
     
     
         9 . The method of  claim 8 , wherein the filling member is a solid or semi-solid member, and moving the filling member into the anchor portion includes maintaining a cross-sectional shape and size of the filling member. 
     
     
         10 . The method of  claim 8 , wherein moving the filling member includes advancing the filling member distally from a first position in the tissue puncture closure device to a second position at least partially positioned in the anchor portion. 
     
     
         11 . The method of  claim 8 , wherein the tissue puncture closure device further includes a shaft portion, and moving the filling member out of the anchor portion includes positioning the filling member in the shaft portion. 
     
     
         12 . The method of  claim 8 , wherein the filling member is selected from a group consisting of a wire structure, a polymeric strand structure, and a gel strand structure, and moving the filling member into or out of the anchor portion includes actuating an actuator mechanism to advance and retract the filling member. 
     
     
         13 . The method of  claim 8 , wherein disposing the sealing plug includes compressing the sealing plug against the internal tissue wall. 
     
     
         14 . The method of  claim 8 , wherein the tissue puncture closure device further includes an actuator, the actuator connected to the filling material, and moving the filling material includes actuating the actuator to move the filling material in a proximal direction or a distal direction.