Surgery – Diagnostic testing – Flexible catheter guide
Reexamination Certificate
2011-03-29
2011-03-29
Hindenburg, Max (Department: 3736)
Surgery
Diagnostic testing
Flexible catheter guide
Reexamination Certificate
active
07914466
ABSTRACT:
A medical device for guiding through anatomy, such as a catheter or guidewire, with a tubular body that has been slotted to enhance bending flexibility, and a polymer liner with an anti-collapsing structure, and a method of making a medical device with a kink-resistant corrugated tubular member and an anti-collapsing structure. Anti collapsing structures may be helical or annular, and may be wire, such as ribbon wire, grooves in the liner, corrugations, or a braid. Liners may be bonded to the anti-collapsing structure, or may have two layers, with the anti-collapsing structure between the layers. Corrugations may be formed between sections of the anti-collapsing ‘structure with heat, pressure, stretching, compression, a mold, or a combination thereof, and may extend inward or outward. Shape or wall thickness may vary along the length to provide a varying bending stiffness. Slots may be formed in groups of two, three, or more, and adjacent groups may be rotated about the axis forming a helical pattern.
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Davis Clark C.
Fox DeWayne C.
Olson Kevin T.
Foreman Jonathan M.
Hindenburg Max
Precision Vascular Systems, Inc.
Seager Tufte & Wickhem LLC
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