Delivery of medical devices
AssigneeCovidien LP
InventorsKurt Haggstrom, Michael L. Losordo, Kenneth Brown
Life of this patent
Estimating the term…
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.
Claims18
A method, comprising:
- disposing a microcatheter within a vasculature of a patient, the microcatheter having a lumen and a proximal end comprising a hub;
- disposing an introducer sheath adjacent to the microcatheter such that a distal end of the introducer sheath is connected to the hub of the microcatheter, wherein a core member and an implant are disposed within a lumen of the introducer sheath, the introducer sheath having a length of at least about 80 cm, the 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;
- and
- distally advancing the core member and the implant out of the distal end of the introducer sheath and into the proximal end of a microcatheter,
- wherein the introducer sheath is detachable from the hub while the microcatheter remains within the vasculature.
A method comprising:
- disposing a microcatheter within a patient, the microcatheter having a lumen and a proximal end;
- disposing an introducer sheath adjacent to the microcatheter such that a distal end of the introducer sheath engages with the proximal end of the microcatheter, wherein a core member and an implant are at least partially received into the introducer sheath, the introducer sheath having a length of at least about 80 cm, the 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;
- and
- distally moving the implant out of the distal end of the introducer sheath and into the proximal end of the microcatheter,
- wherein the introducer sheath can be disengaged from the microcatheter while the implant remains within the patient.
Dependencies are inferred from the claim text.