Membrane delamination devices
AssigneeNovartis AG
InventorsReto Grueebler, Thomas Linsi, Rodolfo Wolfer, Bogdan Vigaru, Steven T. Charles
Life of this patent
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Abstract
Various membrane delamination devices for removing proliferative membranes from underling tissues are disclosed herein. In some implementations, the delamination device may include a first shearing part and a second shearing part. One of the first shearing part and the second shearing part may be moveable relative to the other of the first shearing part and the second shearing part. One or more of the shearing parts may include a plurality of teeth formed at a leading edge thereof. A shearing action produced by operation of the shearing parts may be used to sever fibers joining proliferative membranes from an underlying tissue.
Claims20
A membrane delamination device comprising:
- a first shearing part;
- a second shearing part pivotable relative to the first shearing part;
- and
- a tubular member longitudinally displaceable relative to the first shearing part and the second shearing part, the second shearing part laterally moveable in a first lateral direction in response to longitudinal displacement of the tubular member in a first longitudinal direction, and the second shearing part laterally moveable in a second lateral direction opposite the first direction in response to longitudinal displacement of the tubular member in a second longitudinal direction opposite the first longitudinal direction.
A membrane delamination device comprising:
- a tubular member defining a lumen extending therethrough and defining a longitudinal axis;
- a first shearing part extending from a distal end of the tubular member and fixed relative to the tubular member, the first shearing part comprising a first slot extending parallel to the longitudinal axis;
- a second shearing part extending from the distal end of the tubular member and pivotable relative to the first shearing part at a pinned connection, the second shearing part comprising a second slot formed at an angle that is oblique to the longitudinal axis;
- an elongated member disposed in and longitudinally displaceable within the lumen, the elongated member comprising a third slot formed in a distal end thereof, the third slot receiving proximal ends of the first shearing part and the second searing part;
- and
- a pin coupled to the elongated member and extending across the third slot and through the first slot of the first shearing part and through the second slot of the second shearing part, the second shearing part pivotable about the pinned connection in a first angular direction in response to a longitudinal movement of the elongated member in a first longitudinal direction, and the second shearing part pivotable about the pinned connection in a second angular direction opposite the first angular direction in response to longitudinal movement of the elongated member in a second longitudinal direction opposite the first longitudinal direction.
A membrane delamination device comprising:
- a tubular member defining a lumen;
- a shearing part partially disposed within the lumen and extending distally therefrom and pivotably connected to the tubular member at a pivot pin, the shearing part comprising:
- a distal shearing edge;
- and
- a protrusion formed along the biasing segment;
- and
- an elongated member longitudinally displaceable relative to the shearing part, the elongated member comprising an undulating surface defining a series of peaks and recesses formed between adjacent peaks, the undulating surface and the protrusion cooperate such that longitudinal movement of the elongated member reciprocatingly pivots the shearing part about the pivot pin as the protrusion rides along the undulating surface.
Dependencies are inferred from the claim text.