Intravascular device delivery sheath
First Claim
1. A hybrid tubular member, the tubular member comprising:
- a coil inner layer having a proximal end and a distal end, a longitudinal axis extending therebetween, an angle of the coil in relation to the longitudinal axis forming an inner layer angle; and
a hypotube, with a plurality of openings, forming an outer layer longitudinally overlapping the inner layer and positioned circumferentially outside and adjacent to the inner layer, the outer layer including one or more constituent elements having an outer layer angle relative to the longitudinal axis that is less than the inner layer angle; and
a braided contact layer disposed within the coil inner layer, the braided contact layer forming a lumen to receive an intravascular device, an inner surface of the braided contact layer being more continuous than a surface of the coil inner layer.
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Accused Products
Abstract
An intravascular delivery system includes a delivery sheath capable of transmitting a predetermined tension or compression force in a longitudinal direction while maintaining flexibility to navigate tortuous anatomy. A method of delivering a medical device includes inserting an intravascular device delivery system including a delivery sheath having a continuous spine into a bodily lumen. A distal longitudinal force is applied to the delivery sheath. The distal force is transmitted through the continuous spine and across one or more slit cuts of the delivery sheath. A proximal longitudinal force is applied to the delivery sheath. The proximal longitudinal force is transmitted through the continuous spine of the delivery sheath.
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Citations
17 Claims
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1. A hybrid tubular member, the tubular member comprising:
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a coil inner layer having a proximal end and a distal end, a longitudinal axis extending therebetween, an angle of the coil in relation to the longitudinal axis forming an inner layer angle; and a hypotube, with a plurality of openings, forming an outer layer longitudinally overlapping the inner layer and positioned circumferentially outside and adjacent to the inner layer, the outer layer including one or more constituent elements having an outer layer angle relative to the longitudinal axis that is less than the inner layer angle; and a braided contact layer disposed within the coil inner layer, the braided contact layer forming a lumen to receive an intravascular device, an inner surface of the braided contact layer being more continuous than a surface of the coil inner layer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An intravascular device delivery system, the system comprising:
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an elongated member, the elongated member including; a delivery catheter having a proximal end, a distal end, and a longitudinal axis extending therebetween; a hybrid delivery sheath positioned radially outside and circumferentially about the delivery catheter and coaxial with the delivery catheter, the hybrid delivery sheath including; a coil inner layer having a proximal end and a distal end, a longitudinal axis extending therebetween, an angle of the coil in relation to the longitudinal axis forming an inner layer angle; and a hypotube, with a plurality of openings, forming an outer layer longitudinally overlapping the inner layer and positioned circumferentially outside and around the inner layer, the outer layer including one or more constituent elements having an outer layer angle relative to the longitudinal axis that is less than the inner layer angle; and a braided contact layer disposed within the coil inner layer, the braided contact layer forming a lumen to receive an intravascular device, an inner surface of the braided contact layer being more continuous than a surface of the coil inner layer. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification