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US 8,096,985 B2Granted
Deflectable guide
AssigneeGuided Delivery Systems, Inc.
InventorsMarlone Legaspi, Huu Nguyen, Eugene Serina
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Abstract
Described herein are devices and methods for guide catheters having one or more regions of increased flexibility. A flexibility region comprises one tubular segment of the guide catheter with a non-linear longitudinal seam between two non-concentric layers of material having different durometers. A non-linear seam, such as a zig-zag or sinusoidal configuration, permits controlled compression of lower durometer material between portions of higher durometer material.
Claims14
A catheter, comprising:
- a deformation zone comprising a proximal end, a distal end, a longitudinal length and a longitudinal axis therebetween, a lower durometer segment located along an inner curve of the deformation zone, a higher durometer segment located along an outer curve of the deformation zone, and a first contiguous longitudinal interface between the lower durometer segment and the higher durometer segment, wherein the first interface has a length equal to or greater than the longitudinal length of the deformation zone;
- a post-deformation section distal to the deformation zone formed with a curve;
- a pull structure between the distal end of the deformation zone and the curve of the post-deformation section;
- and
- a pull wire engaging the pull structure, the pull wire moveable to control deflection of the deformation zone.
2 more elements
A catheter, comprising:
- a deformation zone comprising a proximal end, a distal end, a longitudinal length therebetween, a first polymeric layer comprising a proximal edge, a distal edge, a first lateral edge and a second lateral edge, and a second polymeric layer comprising a proximal edge, a distal edge, a first lateral edge and a second lateral edge;
- a post-deformation section distal to the deformation zone formed with a curve;
- a pull structure between the distal end of the deformation zone and the curve;
- and
- a pull wire engaging the pull structure, the pull wire moveable to control deflection of the deformation zone;
- wherein the first polymeric material has a lower durometer than the second polymeric material, and
- wherein the first polymeric material is located longitudinally along an inner curvature of the deformation zone and the second polymeric material is located longitudinally along an outer curvature of the deformation zone;
- and
- wherein the first lateral edge of the first polymeric layer is joined to at least a portion of the second lateral edge of the second polymeric layer;
- and wherein the second lateral edge of the first polymeric layer is joined to at least a portion of the first lateral edge of the second polymeric layer.
7 more elements
Dependencies are inferred from the claim text.