Expandable iliac sheath and method of use
First Claim
1. A method of performing a surgical procedure in a patient'"'"'s vascular system, the method comprising:
- advancing a distal portion of a sheath along an aortic passageway towards an aortic valve in a patient'"'"'s heart, the distal portion of the sheath comprising a malleable reinforcing structure longitudinally folded into a reduced cross-sectional profile;
expanding a distal portion of the sheath within an aortic arch of the patient such that the malleable reinforcing structure is unfolded and the distal portion forms to the curve of the aortic arch;
performing therapy or diagnosis through the expanded distal portion of the sheath; and
removing the sheath from the vascular system;
wherein expanding the distal portion of the sheath comprises expanding the sheath such that a central lumen of the sheath comprises a relatively constant diameter from its distal end to a proximal end of a sheath hub.
1 Assignment
0 Petitions
Accused Products
Abstract
Disclosed is an expandable transluminal sheath, for introduction into the body while in a first, small cross-sectional area configuration, and subsequent expansion of at least a part of the distal end of the sheath to a second, enlarged cross-sectional configuration. The sheath is configured for use in the vascular system and has utility in the introduction and removal of implant delivery catheters. The access route is through the femoral arteries and the iliac arteries into the aorta. The distal end of the sheath is maintained in the first, low cross-sectional configuration during advancement to the arteries into the aorta. The distal end of the sheath is subsequently expanded using a radial dilatation device, which is removed prior to the introduction of implant delivery catheters.
134 Citations
14 Claims
-
1. A method of performing a surgical procedure in a patient'"'"'s vascular system, the method comprising:
-
advancing a distal portion of a sheath along an aortic passageway towards an aortic valve in a patient'"'"'s heart, the distal portion of the sheath comprising a malleable reinforcing structure longitudinally folded into a reduced cross-sectional profile; expanding a distal portion of the sheath within an aortic arch of the patient such that the malleable reinforcing structure is unfolded and the distal portion forms to the curve of the aortic arch; performing therapy or diagnosis through the expanded distal portion of the sheath; and removing the sheath from the vascular system; wherein expanding the distal portion of the sheath comprises expanding the sheath such that a central lumen of the sheath comprises a relatively constant diameter from its distal end to a proximal end of a sheath hub. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method of performing a surgical procedure in a patient'"'"'s vascular system, the method comprising:
-
advancing a distal portion of a sheath along an aortic passageway towards an aortic valve in a patient'"'"'s heart, the distal portion of the sheath comprising a malleable reinforcing structure longitudinally folded into a reduced cross-sectional profile; expanding a distal portion of the sheath within an aortic arch of the patient such that the malleable reinforcing structure is unfolded and the distal portion forms to the curve of the aortic arch; performing therapy or diagnosis through the expanded distal portion of the sheath; and removing the sheath from the vascular system; wherein advancing the distal portion of the sheath comprises advancing the distal portion through a puncture site in the iliac artery to at least the patient'"'"'s aortic arch.
-
-
14. A method of performing a surgical procedure in a patient'"'"'s vascular system, the method comprising:
-
advancing a distal portion of a sheath along an aortic passageway towards an aortic valve in a patient'"'"'s heart, the distal portion of the sheath comprising a malleable reinforcing structure longitudinally folded into a reduced cross-sectional profile; expanding a distal portion of the sheath within an aortic arch of the patient such that the malleable reinforcing structure is unfolded and the distal portion forms to the curve of the aortic arch; performing therapy or diagnosis through the expanded distal portion of the sheath; and removing the sheath from the vascular system; wherein expanding the distal portion of the sheath comprises applying a proximal directed tension on the distal portion to cause axial compression of a braided reinforcement of the malleable reinforcement structure.
-
Specification