Hemostasis-enhancing device and method for its use
The present invention advantageously provides devices, systems, and methods for percutaneous access and closure of vascular puncture sites. In an embodiment, the device for enhancing the hemostasis of a puncture site in a body lumen or tract comprises a catheter having one tubular member having a proximal end and a distal end with one inner lumen extending between at least a longitudinal portion of the catheter tubular member. The one tubular member includes external and internal tubular bodies each having proximal and distal ends. At least one of the external and the internal tubular bodies is longitudinally movable with respect to the other. An expansible member with proximal and distal ends is disposed on the distal end of the one tubular member. The distal end of the expansible member is connected to the distal end of internal tubular body and with its proximal end connected to the distal end of external tubular body.
1. A method for enhancing the hemostasis of a puncture site in a body lumen at a distal end of a tissue tract, comprising:
advancing a hemostatsis enhancing device through the tissue tract, the hemostasis enhancing device including a first catheter and a second catheter, the first catheter comprising:
a first tubular member having a proximal end and a distal end with one inner lumen extending between at least a longitudinal portion thereof, the first tubular member comprising external and internal tubular bodies each having proximal and distal ends with at least one of the external and the internal tubular bodies being longitudinally movable with respect to the other; and
a first expansible member having proximal and distal ends and disposed on the distal end of the first tubular member with a distal end of the first expansible member being connected to the distal end of internal tubular body and a proximal of the first expansible member being connected to the distal end of external tubular body;
the second catheter comprising a tubular member having distal and proximal ends and a second expansible member at said distal end;
wherein the method comprises:
positioning the distal end of the first catheter through the tissue tract and puncture site to a location within the body lumen;
expanding the first expansible member on a luminal side of the puncture site; and
expanding the second expansible member at the distal end of the first catheter so that the first and second expansible members are expanded in tandem in the body lumen.
2. A method according to claim 1 , wherein the first expansible member expanding step comprises longitudinally moving at least one of the external or internal tubular members of the first catheter with respect to the other.
3. A method according to claim 1 , wherein the first expansible member expanding step comprises distally moving the external tubular body of the first catheter.
4. A method according to claim 1 , wherein the hemostasis is achieved at least in part by compression of the first expansible member against the wall of the body lumen.
5. A method according to claim 1 , further comprising removing bodily fluids from the target site through an inner lumen of the first catheter.
6. A method according to claim 1 , further comprising advancing the second catheter through the first catheter.
7. A method according to claim 6 , wherein the first catheter is advanced to the body lumen prior to advancing the second catheter to the body lumen.
8. A method according to claim 1 , further comprising withdrawing the first catheter proximally over the second catheter.