Ureteral stent

Details Ureteral stent Ureteral stent

2004-04-26

2008-12-30

Sweet, Thomas J (Department: 3774)

Surgery

Devices transferring fluids from within one area of body to...

C623S023660

Reexamination Certificate

active

07470247

ABSTRACT:
A ureteral stent comprising an elongated tubular member having a body portion and opposed distal end portion and proximal end portion, the elongated tubular member defining a lumen therein; a retention disk comprising a plurality of generally axial, spaced-apart collapsable struts interconnected with a membrane to form a generalized tube with a retention disk lumen therein, the retention disk lumen in fluid communication with the lumen of the body portion, the struts and the membrane couple to the body portion proximal end at a retention disk distal end and terminate at a retention disk proximal end, each strut having a widthwise folding hinge substantially dividing the length of the strut, the struts adapted to have an expanded state wherein the struts are unfolded and substantially straight, as well as a free-resting state wherein each strut folds in upon itself at the folding hinge to form an inverted umbrella-like disk-shaped configuration; and a valve, wherein the inverted umbrella-like configuration provides a conformal shape to the ureteral orifice.

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Examination Report dated Aug. 4, 2006 from the German Patent Office for corresponding German patent application No. 10-2004-053-543-4-43, filed Nov. 5, 2004, 4 pages.
Examination Report dated Aug. 4, 2006 from the German Patent Office for related German patent application No. 10 2004 050 915.8, filed Oct. 19, 2004, 3 pages.

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