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US 8,740,815 B2Granted
Guidewire
AssigneeDevice Source, LLC
InventorsRobert A. Palme, Jr., Gregory L. Townsend
Life of this patent
Estimating the term…
Abstract
A guidewire has a coil with a side of the coil winds having solid physical connections between the coil winds to prevent the connected coil wind side from expanding resulting from the application of force by an actuating member. The application of longitudinal force to the coil causes the unconnected coil wind side to expand while the connected side does not expand, resulting in the guidewire assuming a different configuration.
Claims19
A guidewire, comprising:
- a distal section having an expandable side and a non-expandable side, the distal section comprising a metallic coil defining a first central space and comprising a plurality of winds defined by a first outer radius when viewed in a longitudinal direction, and an external flat section on the plurality of winds defined by a second outer radius when viewed in the longitudinal direction, the second outer radius being smaller than the first outer radius;
- a proximal section comprising a hollow member defining a second central space coaxial with the first central space, the proximal section having less flexibility than the distal section;
- a metallic ribbon having a rectangular cross section attached to the external flat section at each of the plurality of winds;
- and
- an actuating member extending through the first central space and the second central space, the actuating member attached proximate a distal end of the distal section and capable of transferring longitudinal force to the coil.
2 more elements
A guidewire comprising:
- a distal section having a longitudinal axis and comprising a coil defining a central space extending along the longitudinal axis, the coil comprising a plurality of winds having an external flat section;
- and
- a ribbon having a rectangular cross section attached to the external flat section at each of the plurality of winds,
- wherein when viewed in a cross section taken orthogonal to the longitudinal axis, the coil has a first outer radius and a second outer radius at the external flat section, the second outer radius being less than the first outer radius.
1 more element
A guidewire comprising:
- a distal section having a longitudinal axis and comprising a coil defining a central space extending along the longitudinal axis, the coil comprising a plurality of winds having an external flat section;
- and
- a ribbon having a rectangular cross section attached to the external flat section at each of the plurality of winds,
- wherein when viewed in a cross section taken orthogonal to the longitudinal axis, the coil has a first outer radius and the external flat section has a second outer radius, the second outer radius being less than the first outer radius.
1 more element
Dependencies are inferred from the claim text.