Catheter shaft and associated devices, systems, and methods
AssigneeInari Medical, Inc.
InventorsRichard Quick, Brian J. Cox
Life of this patent
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Abstract
Catheter shafts and associated devices, systems, and methods are disclosed herein, A representative catheter in accordance with an embodiment of the disclosure includes a generally tubular outer structure and an inner structure surrounded by the outer structure. The inner structure surrounds a catheter lumen. The inner structure includes over-lapping edges such that, when the catheter is bent along its longitudinal axis, the over-lapping edges move relative to one another.
Claims17
A catheter, comprising:
- a generally tubular outer structure;
- and
- an inner structure surrounded by the outer structure and that surrounds a catheter lumen, wherein the inner structure extends along a longitudinal axis and includes over-lapping edges that overlap in a radial direction relative to the longitudinal axis, wherein the overlapping edges extend entirely circumferentially about the longitudinal axis, and wherein the over-lapping edges are not adhered together.
A catheter, comprising:
- a generally tubular outer structure;
- and
- an inner structure surrounded by the outer structure, wherein the inner structure is non-continuous in a longitudinal direction, wherein the inner structure has a freely sliding interface with itself in a radial direction relative to the longitudinal axis, and wherein the freely sliding interface extends entirely circumferentially about the longitudinal axis.
A catheter, comprising:
- a generally tubular outer structure;
- and
- an inner structure surrounded by the outer structure, wherein the inner structure extends along a longitudinal axis, wherein the inner structure has freely sliding interfaces with itself in a radial direction relative to the longitudinal axis, and wherein the freely sliding interfaces extend entirely circumferentially about the longitudinal axis.
A catheter, comprising:
- a generally tubular outer structure;
- and
- an innermost structure surrounded by the outer structure, wherein the innermost structure extends along a longitudinal axis, wherein the innermost structure provides less than 50% of the total bending stiffness of the catheter, wherein the inner structure has a freely sliding interface with itself in a radial direction relative to the longitudinal axis, and wherein the freely sliding interface extends entirely circumferentially about the longitudinal axis.
A catheter, comprising a generally tubular outer structure;
- and
- an inner structure surrounded by the outer structure, wherein the inner structure extends along a longitudinal axis, wherein the inner structure has inner portions and outer portions that overlap in a radial direction relative to the longitudinal axis, wherein the inner portions and the outer portions overlap entirely circumferentially about the longitudinal axis, and wherein the inner portions are configured to slide tangentially relative to the outer portions during bending of the catheter.
A catheter, comprising a generally tubular outer structure, the outer structure having an outer surface and an inner surface;
- and
- an inner structure surrounded by the outer structure, wherein the inner structure is composed of a strip of material that is helically wound around a central longitudinal axis to form a generally tubular member defining a lumen, wherein the strip has an outer surface and an inner surface, wherein the strip is wound to have an overlapping region at which a first portion of the strip overlaps a second portion of the strip in a radial direction relative to the longitudinal axis of the strip, and wherein, at the overlapping region of the strip
- the outer surface of the first portion of the strip is at least partially bonded to the inner surface of the outer structure, and
- the outer surface of the first portion of the strip (a) faces the inner surface of the second portion of the strip and (b) is configured to slide relative to the inner surface of the first portion of the strip when the inner structure is bent relative to the longitudinal axis.
Dependencies are inferred from the claim text.