Medical device delivery system
AssigneeCovidien LP
InventorsStephen A. Sosnowski, David G. Matsuura, Philip J. Simpson, Belinko K. Matsuura, Jeffrey J. Loos
Life of this patent
Estimating the term…
Abstract
A medical device delivery system can be used to advance a medical device to a target area within a patient's vasculature. The system can comprise a catheter, a support sheath, and a core member coupled to a medical device. The core member can be used to longitudinally advanced or retracting medical device within a lumen of the support sheath. The support sheath can be advanced within the catheter until a distal end of the support sheath contacts or abuts a reduced diameter section of the catheter lumen. Thereafter, the core member can be advanced into the catheter lumen toward the target area.
Claims21
1-29. (canceled)
A core assembly for a medical device delivery system, the assembly comprising:
- an introducer sheath having proximal and distal sections, a lumen, and an inner shoulder extending radially within the lumen at an intersection of the proximal and distal sections, the lumen having a first diameter in the proximal section and a second diameter, less than the first diameter, in the distal section;
- and
- a core member having proximal and distal sections, an outer shoulder separating the proximal and distal sections, and a stent engagement portion at the distal section for coupling a stent thereto, the core member distal section being positioned within the sheath lumen along sheath distal section and proximal to a distal end of the sheath in a first position, wherein a cross-sectional profile of the core member distal section is less than the lumen diameter of the sheath distal section to allow core member distal section and a stent supported thereon to be advanced within the sheath distal section until the outer shoulder converges toward the sheath inner shoulder such that the core member distal section extends beyond a distal end of the sheath in a second position.
A core assembly for a medical device delivery system, the assembly comprising:
- an introducer sheath having proximal and distal sections, and a lumen, the lumen having a first diameter in the proximal section and a second diameter, less than the first diameter, in the distal section;
- and
- a core member having proximal and distal sections, and a stent engagement portion at the distal section for coupling a stent thereto, the core member distal section being positioned within the sheath lumen along sheath distal section and proximal to a distal end of the sheath in a first position, the core member being distally advanceable by between about 30 cm to about 60 cm from the first position such that the core member distal section extends beyond a distal end of the sheath in a second position.
A core member of a medical device delivery system, the core member comprising:
- a proximal section having a first cross-sectional profile;
- a distal section having a second cross-sectional profile;
- an outer shoulder separating the proximal and distal sections whereat the first cross-sectional profile decreases to the second cross-sectional profile;
- and
- a stent engagement portion coupled to the distal section.
Dependencies are inferred from the claim text.