Helical Screw Puncture Tip
First Claim
Patent Images
1. A helical screw dilator having a proximal end, a distal end, and an axial length, the helical screw dilator comprising:
- a threaded dilation portion having an outer surface increasing in circumference with distance from the distal end and having threads disposed about the outer surface; and
a shaft between the threaded dilation portion and the proximal end.
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Accused Products
Abstract
A helical screw dilator system and method including a helical screw dilator having a proximal end, a distal end, and an axial length, the helical screw dilator including a piercing tip at the distal end; a threaded dilation portion operably connected to the piercing tip along the axial length, the threaded dilation portion having an outer surface increasing in circumference with distance from the distal end and having threads disposed about the outer surface; and a shaft between the threaded dilation portion and the proximal end and a guidewire lumen through the center to guide the system to its destination.
77 Citations
34 Claims
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1. A helical screw dilator having a proximal end, a distal end, and an axial length, the helical screw dilator comprising:
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a threaded dilation portion having an outer surface increasing in circumference with distance from the distal end and having threads disposed about the outer surface; and a shaft between the threaded dilation portion and the proximal end. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A helical screw dilator system for use in a vasculature of a patient, the helical screw dilator system comprising:
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a helical screw dilator having a proximal end, a distal end, an axial length, and an axial lumen along the axial length, the helical screw dilator comprising a piercing tip at the distal end;
a threaded dilation portion connected to the piercing tip, the threaded dilation portion having an outer surface increasing in circumference with distance from the distal end and having threads disposed about the outer surface; and
a shaft between the threaded dilation portion and the proximal end;a steerable catheter adapted to receive and guide the helical screw dilator in the vasculature; and a guidewire insertable in the axial lumen. - View Dependent Claims (20, 21, 22, 23)
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24. A method of stent graft fenestration in a vasculature, the method comprising:
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providing a helical screw dilator having a proximal end, a distal end, and an axial length, the helical screw dilator comprising a piercing tip at the distal end;
a threaded dilation portion connected to the piercing tip, the threaded dilation portion having an outer surface increasing in circumference with distance from the distal end and having threads disposed about the outer surface; and
a shaft between the threaded dilation portion and the proximal end;forming a hole in a graft material with the piercing tip; engaging the threads with the hole; and rotating the threaded dilation portion to advance the threaded dilation portion into the hole. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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32. A helical screw dilator for graft material of a stent graft comprising:
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means for piercing a hole in the graft material; means for dilating the hole; means for advancing the dilating means into the hole in response to rotation; and means for rotating the advancing means. - View Dependent Claims (33, 34)
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Specification