Expandable iliac sheath and method of use
First Claim
1. An endovascular intra-aortic catheter for providing access to a patient'"'"'s heart through an aortic passageway leading away from an aortic valve in the patient'"'"'s heart;
- the catheter comprising;
a sheath having a distal portion, a proximal portion and a lumen extending therebetween, the sheath having a length between a distal end of the distal portion and a proximal end of the proximal portion, the length being sufficient such that the proximal end of the proximal portion extends out of the patient at a puncture site into an iliac artery and the distal end of the distal portion adapted to extend at least to the patient'"'"'s aortic arch;
the distal portion of the sheath comprising at least one diametrically expandable region that comprises a malleable reinforcement structure configured to maintain the at least one diametrically expandable region in a first cross-sectional configuration in which the at least one diametrically expandable region is longitudinally folded into a reduced cross-sectional profile and can be expanded to a second cross-sectional configuration in which the at least one diametrically expandable region is unfolded into a larger cross-sectional profile; and
a hub coupled to the sheath at its proximal end.
3 Assignments
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. In an exemplary application, the sheath includes a supported proximal end, a supported distal end, and a collapsible center section. Certain configurations of the sheath are capable of being inserted in a first, small cross-sectional configuration, being expanded diametrically to a second, larger cross-sectional configuration, and then being reduced to a diametrically small size for removal.
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Citations
27 Claims
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1. An endovascular intra-aortic catheter for providing access to a patient'"'"'s heart through an aortic passageway leading away from an aortic valve in the patient'"'"'s heart;
- the catheter comprising;
a sheath having a distal portion, a proximal portion and a lumen extending therebetween, the sheath having a length between a distal end of the distal portion and a proximal end of the proximal portion, the length being sufficient such that the proximal end of the proximal portion extends out of the patient at a puncture site into an iliac artery and the distal end of the distal portion adapted to extend at least to the patient'"'"'s aortic arch;
the distal portion of the sheath comprising at least one diametrically expandable region that comprises a malleable reinforcement structure configured to maintain the at least one diametrically expandable region in a first cross-sectional configuration in which the at least one diametrically expandable region is longitudinally folded into a reduced cross-sectional profile and can be expanded to a second cross-sectional configuration in which the at least one diametrically expandable region is unfolded into a larger cross-sectional profile; anda hub coupled to the sheath at its proximal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- the catheter comprising;
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20. An endovascular introducer catheter system for providing access to a patient'"'"'s vascular system;
- the catheter comprising;
a sheath having a distal portion, a proximal portion and a lumen extending therebetween, the sheath comprising at least one diametrically expandable region that comprises a malleable reinforcement structure configured to maintain the at least one diametrically expandable region in a first cross-sectional configuration in which the at least one diametrically expandable region is longitudinally folded into a reduced cross-sectional profile and can be expanded to a second cross-sectional configuration in which the at least one diametrically expandable region is unfolded into a larger cross-sectional profile; a hub coupled to the sheath at its proximal end; and an implantable device delivery catheter comprising an implantable device advanced through the lumen of the sheath. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
- the catheter comprising;
Specification