Vena cava delivery system
DCFirst Claim
1. A delivery system for the percutaneous insertion of a self-expanding vena cava filter being formed with a length along a longitudinal filter axis, said system comprising:
- an elongated, radially flexible and axially stiff tubular member extending proximally from a distal end and having a distal end section;
a segment carried in said distal end section for constraining the filter in a compact condition substantially coaxially with said tubular member, said segment being relatively short compared to the axial length of the filter and having an inner surface that resists penetration by the filter thereby to protect said tubular member from damage during transport of the filter; and
a displacement member attached to said tubular member for displacing the filter from said segment thereby to deploy the filter.
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Accused Products
Abstract
A delivery system for delivery and deployment of devices having abrading portions within a patient'"'"'s lumen. A lumen in a flexible catheter that extends proximally from a distal end of the catheter receives the device in a compact form. At least one impervious segment positioned in the lumen overlies the abrading portions of the device to shield and buffer the surface of the lumen from the abrading portions. The segment is of a relatively short length so that the catheter remains relatively flexible therealong to enable relative ease in the transit of the catheter through the patient'"'"'s lumen to a delivery site. Additional segments may be disposed in the catheter distally of the segment or the segment may move with the device to the distal end to buffer the walls of the catheter during the deployment of the device. Additional segments mate with the segment so that engaged ones of the segments are relatively radial deflectable.
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Citations
17 Claims
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1. A delivery system for the percutaneous insertion of a self-expanding vena cava filter being formed with a length along a longitudinal filter axis, said system comprising:
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an elongated, radially flexible and axially stiff tubular member extending proximally from a distal end and having a distal end section;
a segment carried in said distal end section for constraining the filter in a compact condition substantially coaxially with said tubular member, said segment being relatively short compared to the axial length of the filter and having an inner surface that resists penetration by the filter thereby to protect said tubular member from damage during transport of the filter; and
a displacement member attached to said tubular member for displacing the filter from said segment thereby to deploy the filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification