Delivery of medical devices
First Claim
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1. A stent delivery system, comprising:
- a core member having a first section and a second section distal to the first section, the second section having a bending stiffness per unit length that is less than a bending stiffness per unit length of the first section;
an introducer sheath having a lumen configured to receive the core member therethrough, the introducer sheath having a length of at least about 80 cm; and
a microcatheter having a lumen and a proximal end, the proximal end comprising a hub configured to be connected to a distal end of the introducer sheath for transitioning the core member and an implant disposed within the introducer sheath out of a distal end of the introducer sheath and into the proximal end of the microcatheter;
wherein after the implant is transitioned into the microcatheter, the introducer sheath is detachable from the hub while the microcatheter remains within a patient.
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Abstract
A stent delivery system can include a core member, an introducer sheath, and a microcatheter. The core member can have a first section and a second section distal to the first section. The second section can have a bending stiffness per unit length that is less than a bending stiffness per unit length of the first section. The introducer sheath can have a lumen configured to receive the core member therethrough. The introducer sheath can have a length of at least about 80 cm. The microcatheter can have a lumen and a proximal end configured to interface with a distal end of the introducer sheath for delivering the core member into the microcatheter lumen.
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Citations
21 Claims
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1. A stent delivery system, comprising:
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a core member having a first section and a second section distal to the first section, the second section having a bending stiffness per unit length that is less than a bending stiffness per unit length of the first section; an introducer sheath having a lumen configured to receive the core member therethrough, the introducer sheath having a length of at least about 80 cm; and a microcatheter having a lumen and a proximal end, the proximal end comprising a hub configured to be connected to a distal end of the introducer sheath for transitioning the core member and an implant disposed within the introducer sheath out of a distal end of the introducer sheath and into the proximal end of the microcatheter; wherein after the implant is transitioned into the microcatheter, the introducer sheath is detachable from the hub while the microcatheter remains within a patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A stent delivery system, comprising:
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a core member having (i) a stiff section having a first bending stiffness and (ii) a soft section having a second bending stiffness that is less than the first bending stiffness, the second bending stiffness varying spatially along the soft section; an introducer sheath covering any portion of the core member having a bending stiffness that is less than the first bending stiffness, the introducer sheath having a length of at least about 80 cm; and a microcatheter having a lumen and a proximal end, the proximal end comprising a hub configured to connect a distal end of the introducer sheath to the microcatheter proximal end for transitioning the core member and an implant disposed in the introducer sheath out of a distal end of the introducer sheath and into the proximal end of the microcatheter; wherein after the implant is transitioned into the microcatheter, the introducer sheath is detachable from the hub while the microcatheter remains within a patient. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification