STENT SYSTEMS
First Claim
Patent Images
1. A stent delivery system including an elongate delivery guide comprising:
- a stent comprising a near end, a far end and a structure extending therebetween, the stent further comprising a near and a far mating portion at the near and far ends of the stent, near and far seats at a far portion of the delivery guide, a mating portion being received in each seat, at least one helical wrap including an electrolytically erodable section, the wrap at least partially covering at least one of the seats and mating portions received therein, and an insulative polymer sleeve interposed between the wrap and the mating portions.
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0 Petitions
Accused Products
Abstract
Medical devices and methods for delivery or implantation of prostheses within hollow body organs and vessels or other luminal anatomy are disclosed. The subject technologies can be used in the treatment of atherosclerosis in stenting procedures or be used in variety of other procedures. The systems can employ a self expanding stent restrained by one or more members released by an electrolytically erodable latch.
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Citations
47 Claims
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1. A stent delivery system including an elongate delivery guide comprising:
- a stent comprising a near end, a far end and a structure extending therebetween, the stent further comprising a near and a far mating portion at the near and far ends of the stent, near and far seats at a far portion of the delivery guide, a mating portion being received in each seat, at least one helical wrap including an electrolytically erodable section, the wrap at least partially covering at least one of the seats and mating portions received therein, and an insulative polymer sleeve interposed between the wrap and the mating portions.
- View Dependent Claims (2, 3, 4, 5)
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6. A stent delivery system including an elongate delivery guide comprising:
- a stent comprising a near end, a far end and a structure extending therebetween, the stent further comprising a near and a far mating portion at the near and far ends of the stent, near and far seats at a far portion of the delivery guide, one mating portion being received in one seat and the other mating portion being receiving in the other seat, one of the seats being rotatable, and near far restraints for holding portions of the stent in a compressed state, one of the restraints including a helical wrap having an electrolytically erodable section, the wrap at least partially covering one of the seats and mating portions received therein.
- View Dependent Claims (7, 8, 9)
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10. A method of loading a stent delivery system comprising:
- securing the first end of a stent having first and second ends to a first seat that is fixed to a delivery guide, the first end being secured to the first seat with a wrapping member, securing the second end of the stent to a second seat that is coupled to the delivery guide, twisting the stent into a twisted configuration while the second end of the stent is secured to a second seat with a restraint, and fixing the second seat to the delivery guide.
- View Dependent Claims (11, 46)
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12. A method of implant delivery comprising:
- introducing an implant delivery system in an electrolytic fluid; and
applying electrical power to a delivery guide having at least one electrolytically erodable member, the power having an AC voltage component with a peak-to-peak configuration of at least about 5V, and a DC voltage signal of at least about 1V, wherein the DC component is increased from zero to a maximum over a period of at least about 0.1 seconds. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
- introducing an implant delivery system in an electrolytic fluid; and
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23. A implant delivery guide body comprising:
- an elongate body, the body comprising a proximal metal tube, a distal metal tube, a corewire, and a superelastic helical wrap, the core wire connecting the proximal and distal tubes, the wrap overlaying at least one junction between the proximal and distal tubes.
- View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31)
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32. A stent delivery system comprising:
- an implant delivery guide body comprising a proximal metal tube, a distal metal tube, a corewire, and a superelastic helical wrap, the core wire connecting the proximal and distal tubes, the wrap overlaying at least one junction between the proximal and distal tubes, and a stent releasably mounted adjacent a distal end of the guide body.
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33. A stent delivery system comprising:
- an elongate-delivery guide body, and a stent releasably secured to the delivery guide body, the stent held in a twisted, compressed profile for delivery, over a mandrel, a plurality of hollow cylindrical members interposed between the stent and the mandrel, wherein the hollow members are rotatable about the mandrel at least prior to holding the stent in its delivery profile.
- View Dependent Claims (34, 35, 36, 37, 38)
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39. A method of loading a stent delivery system, the method comprising:
- rotating at least one of a stent not over a mandrel, onto a plurality of rollers on the mandrel;
progressively spinning the rollers as the stent progressively assumes a compressed diameter, and securing the stent to the delivery system. - View Dependent Claims (40, 41)
- rotating at least one of a stent not over a mandrel, onto a plurality of rollers on the mandrel;
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42. A self-expanding stent comprising:
- a body portion have a closed cell lattice construction, a longitudinal axis when in relaxed state, and distal and proximal ends;
a plurality of distal projections extending from said distal end and a plurality of proximal projections extending from said proximal end, the distal and proximal projections extending in a direction generally parallel to the longitudinal axis, and, the proximal projections being longer than said distal projections. - View Dependent Claims (43)
- a body portion have a closed cell lattice construction, a longitudinal axis when in relaxed state, and distal and proximal ends;
- 44. A stent delivery guide comprising a delivery guide having a first length having a proximal and distal end portion, a second length having a proximal and distal end portion, a self-expanding stent having a proximal and distal end portion, and a coil having a proximal and distal end the first length distal end portion being coupled to the second length proximal end portion, the second length distal end portion being coupled toe the proximal end of the stent and the distal end of the stent being coupled to the proximal end of the coil, which forms the distal tip of the delivery guide, the first length being less flexible than the second length.
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47. A method for delivering a balloon catheter to a lesion site comprising:
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positioning a stent carrying delivery guide with a self-expanding stent releasably coupled thereto at a location in a vessel with the stent near a lesion site; tracking a balloon catheter with an expandable balloon over the stent carrying delivery guide to the lesion site and dilating the lesion site with the balloon catheter; moving the balloon catheter to allow release of the stent at the lesion site, while maintaining the balloon catheter tracked over the stent carrying delivery guide; deploying the stent from the stent carrying delivery guide at the lesion site; moving the balloon catheter over the delivery guide and positioning the balloon catheter balloon at the lesion site; and manipulating the balloon catheter to effect post stent deployment dilation of the lesion site.
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Specification