Surgery – Devices transferring fluids from within one area of body to... – With flow control means
Reexamination Certificate
2005-06-21
2005-06-21
Willse, David H. (Department: 3738)
Surgery
Devices transferring fluids from within one area of body to...
With flow control means
C623S023700
Reexamination Certificate
active
06908447
ABSTRACT:
An anti-reflux ureteral stent includes an elongated member with a distal end having a first retention structure and a proximal end having a second retention structure. A lumen extends between the distal and proximal ends. The elongated member may include a valve near the proximal end and distal to the second retention structure. The valve may include one or more slits or windows tending to render the elongated member collapsible. The valve may include one or more protrusions to partially occlude the lumen. A protrusion, if present, may be shaped as a helical thread. The second retention structure may be shaped as a barb to engage a ureteral orifice in a bladder.
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International Search Report for International Patent Application No. PCT/US03/11879, 5 pages.
Communication Relating to the Results of the Partial International Search for International Patent Application No. PCT/US03/11879, 4 pages.
Chu Michael S. H.
McWeeney John O.
Sci-Med Life Systems, Inc.
Willse David H.
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