Medical device delivery system
First Claim
Patent Images
1. A medical device delivery system, comprising:
- a support catheter having proximal and distal sections and a lumen having an inner shoulder separating the proximal and distal sections, the catheter lumen having a larger diameter in the proximal section than in the distal section, wherein the distal section of the catheter and at least part of the proximal section of the catheter are each configured to be positioned within the vasculature of a patient;
an introducer sheath having proximal and distal sections and a lumen extending therethrough, the sheath having a larger cross-sectional profile in the proximal section than in the distal section, the sheath being advanceable within the catheter lumen of the catheter proximal section to contact a distal end portion of the sheath against the catheter inner shoulder to stabilize the sheath within the catheter while the distal section of the sheath is wholly disposed within the catheter lumen and the proximal section of the sheath is at least partially disposed within the catheter lumen, the sheath distal section lumen diameter being about equal to the catheter distal section lumen diameter; and
a core member having a proximal section and a distal section configured to carry a medical device thereon, the distal section cross-section profile being less than the sheath distal section lumen inner diameter to allow the core member distal section to be advanced along the sheath distal section, wherein the core member proximal section has a cross-sectional profile that is greater than the catheter distal section lumen diameter and the sheath distal section lumen diameter,wherein the sheath proximal section has a length of at least 100 cm and the sheath distal section has a length of at least 30 cm.
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Accused Products
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.
76 Citations
29 Claims
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1. A medical device delivery system, comprising:
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a support catheter having proximal and distal sections and a lumen having an inner shoulder separating the proximal and distal sections, the catheter lumen having a larger diameter in the proximal section than in the distal section, wherein the distal section of the catheter and at least part of the proximal section of the catheter are each configured to be positioned within the vasculature of a patient; an introducer sheath having proximal and distal sections and a lumen extending therethrough, the sheath having a larger cross-sectional profile in the proximal section than in the distal section, the sheath being advanceable within the catheter lumen of the catheter proximal section to contact a distal end portion of the sheath against the catheter inner shoulder to stabilize the sheath within the catheter while the distal section of the sheath is wholly disposed within the catheter lumen and the proximal section of the sheath is at least partially disposed within the catheter lumen, the sheath distal section lumen diameter being about equal to the catheter distal section lumen diameter; and a core member having a proximal section and a distal section configured to carry a medical device thereon, the distal section cross-section profile being less than the sheath distal section lumen inner diameter to allow the core member distal section to be advanced along the sheath distal section, wherein the core member proximal section has a cross-sectional profile that is greater than the catheter distal section lumen diameter and the sheath distal section lumen diameter, wherein the sheath proximal section has a length of at least 100 cm and the sheath distal section has a length of at least 30 cm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A medical device delivery system, the system comprising:
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a catheter having proximal and distal sections, and an inner lumen having a larger inner diameter in the proximal section than in the distal section, wherein the distal section of the catheter and at least part of the proximal section of the catheter are each configured to be positioned within the vasculature of a patient; and a loading assembly comprising; a support sheath having proximal and distal sections and a lumen extending therethrough, the support sheath having a larger cross-sectional profile in the proximal section than in the distal section, wherein the support sheath proximal section has a length of at least 100 cm and the support sheath distal section has a length of at least 30 cm; and a core assembly comprising a core member and a stent engaged by the core member, the core assembly slidably received in the support sheath with the stent positioned in the support sheath lumen in the support sheath distal section such that the stent is movable along the support sheath distal section via the core member, wherein the loading assembly is removably positioned, or removably positionable, within the catheter proximal section with the support sheath distal section wholly disposed within the catheter lumen and the support sheath proximal section at least partially disposed within the catheter lumen and a distal end of the support sheath distal section adjoining a proximal end of the catheter distal section such that the stent can be advanced distally into the catheter distal section from the support sheath distal section. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A medical device delivery system, the system comprising:
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a catheter having proximal and distal sections and a lumen having an inner shoulder between the proximal and distal sections, the catheter lumen having a larger diameter in the proximal section than in the distal section, wherein the distal section of the catheter and at least part of the proximal section of the catheter are each configured to be positioned within the vasculature of a patient; a support sheath having proximal and distal sections and an inner lumen, the support sheath having a greater cross-sectional profile in the proximal section than in the distal section, the support sheath being advanceable within the lumen of the catheter proximal section to contact a distal end portion of the sheath against the catheter inner shoulder to stabilize the sheath within the catheter while the distal section of the sheath is wholly disposed within the catheter lumen and the proximal section of the sheath is at least partially disposed within the catheter lumen, the proximal section of the support sheath having a length of at least 100 cm and the distal section of the sheath having a length of at least 30 cm, wherein the sheath distal section lumen diameter is about equal to the catheter distal section lumen diameter; and a core member having a proximal section and a distal section, and carrying a medical device via the distal section, the core member distal section cross-sectional profile being less than the sheath distal section lumen inner diameter to allow the medical device and core member distal section to be advanced along the sheath distal section, wherein the core member proximal section has a cross-section profile that is greater than the catheter distal section lumen diameter and the sheath distal section lumen diameter. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification