Catheter including an inner liner with a flexible distal section
AssigneeCovidien LP
InventorsUjwal Jalgaonkar, Edwin Wang, David Marchesiello
Life of this patent
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Abstract
In some examples, a catheter includes a catheter body including an outer jacket and an inner liner. The inner liner may include a proximal section including a proximal end of the inner liner and a distal section including a distal end of the inner liner. The distal section may include an inner liner defining a plurality of cuts. Each cut may extend at least partially through the liner wall. The one or more cuts defined in the liner wall of the distal section of the inner liner may increase a bending flexibility of the distal section relative to the proximal section of the inner liner, while maintaining a suitable tensile strength of the distal section.
Claims29
A catheter comprising:
- an elongated body including:
- an inner liner extending between a proximal end and a distal end, the inner liner defining a lumen, wherein the inner liner includes a proximal section including the proximal end and a distal section including the distal end, wherein the distal section of the inner liner includes a liner wall defining a plurality of cuts, each cut extending only partially through a thickness of the liner wall, and wherein each cut of the plurality of cuts extends from an outer surface of the liner wall radially inward towards the lumen;
- and
- an outer jacket positioned over the inner liner and fixed to the inner liner, wherein the outer jacket extends over the plurality of cuts,
- wherein the inner liner is formed from a more lubricous material than the outer jacket.
A catheter comprising:
- an elongated body including:
- an inner liner extending between a proximal end and a distal end, the inner liner defining a lumen, wherein the inner liner includes a proximal section including the proximal end and a distal section including the distal end, wherein the distal section of the inner liner includes a liner wall defining a helical cut that extends only partially through a thickness of the liner wall, the helical cut extending from an outer surface of the liner wall radially inward towards the lumen;
- and
- an outer jacket positioned over the inner liner and fixed to the inner liner, wherein the outer jacket extends over the helical cut,
- wherein the inner liner is formed from a more lubricous material than the outer jacket.
Dependencies are inferred from the claim text.