Multi-filar, cross-wound coil for medical devices
First Claim
1. A flexible catheter-like guidewire device comprisinga multi-filar, cross-wound coil body terminating in a distal ball tip element, said body comprising a first inner coil of multiple coil wires wound in a first helical direction and a second outer coil of multiple coil wires disposed closely thereabout and wound in a second opposite helical direction, said body defining an elongated lumen opening proximally, said distal ball tip element attached to said body solely via said inner and outer coil wires,a proximal handle portion,a core extending from said handle portion and removably received through the proximal opening into the elongated lumen of said body, said core, by movement of said handle relative to said body, adapted for axial movement within said body, relative to said distal ball tip element, for adjustment of the axial position of said core relative to said body thereby to vary the flexibility of the distal region of the device,proximal means connected to said coil body for connection of said lumen, with said core removed, to a source of fluid, andsheath means secured about said body for sealing said lumen for transport of fluid introduced through the proximal opening, through said lumen, to be delivered radially from said lumen in the distal tip region of the device.
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Accused Products
Abstract
A flexible catheter-like guidewire has a multi-filar, cross-wound coil body terminating in a distal ball tip element. The body has a first inner coil of multiple coil wires wound in a first helical direction and a second outer coil of multiple coil wires disposed thereabout and wound in a second opposite helical direction. The body defines an elongated lumen opening proximally. The guidewire further includes a proximal handle and, extending therefrom, a core sized and adapted to be received through the proximal opening into the body lumen. The core, by movement of the handle relative to the body, is adapted for axial movement within the body for adjustment of the flexibility of the distal region of the device. A proximal connector joins the lumen, with the core removed, to a source of fluid, and a sheath associated with the body seals the lumen for transport of fluid introduced through the proximal opening, through the lumen to be delivered radially from the lumen in the distal tip region of the device.
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Citations
24 Claims
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1. A flexible catheter-like guidewire device comprising
a multi-filar, cross-wound coil body terminating in a distal ball tip element, said body comprising a first inner coil of multiple coil wires wound in a first helical direction and a second outer coil of multiple coil wires disposed closely thereabout and wound in a second opposite helical direction, said body defining an elongated lumen opening proximally, said distal ball tip element attached to said body solely via said inner and outer coil wires, a proximal handle portion, a core extending from said handle portion and removably received through the proximal opening into the elongated lumen of said body, said core, by movement of said handle relative to said body, adapted for axial movement within said body, relative to said distal ball tip element, for adjustment of the axial position of said core relative to said body thereby to vary the flexibility of the distal region of the device, proximal means connected to said coil body for connection of said lumen, with said core removed, to a source of fluid, and sheath means secured about said body for sealing said lumen for transport of fluid introduced through the proximal opening, through said lumen, to be delivered radially from said lumen in the distal tip region of the device.
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17. An elongated, medical guidewire device comprising
a multi-filar, cross-wound coil body terminating in a distal tip, said body comprising a first inner coil of multiple coil wires wound in a first helical direction and a second outer coil of multiple coil wires disposed closely thereabout in a manner to bear upon the inner coil during rotation of said device, and wound in a second opposite helical direction, said body defining an elongated open lumen, said inner coil being connected to said outer coil in a distal region and in a proximal region, said body comprising means for transmission, to the distal tip region, of substantially all of the rotation torque applied to the proximal end of the device outside of the body, said means comprising said second coil beds upon said first coil.
Specification