Flexible tip catheter
AssigneeCovidien LP
InventorsGeorge Stern, Edwin Bon, Edwin Wang, Ujwal Jalgaonkar, Peter Skujins
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Abstract
In some examples, a catheter includes an elongated body comprising proximal and distal portions. The distal portion of the elongated body comprises an inner liner that includes a proximal liner section and a distal liner section that include different materials, and an outer jacket positioned over the inner liner. The distal liner section has a first hardness and the proximal liner section has a second hardness, where the first hardness is less than the second hardness.
Claims22
A catheter comprising:
- an elongated body including proximal and distal portions, the distal portion of the elongated body comprising:
- an inner liner comprising a proximal liner section and a distal liner section comprising different materials, wherein the distal liner section has a first hardness less than a second hardness of the proximal liner section, and wherein the distal liner section is less lubricious than the proximal liner section;
- and
- an outer jacket positioned over the inner liner.
A method of forming an elongated body of a catheter, the method comprising:
- positioning an inner liner over a mandrel, wherein the inner liner comprises a proximal liner section and a distal liner section comprising different materials, wherein the distal liner section has a first hardness less than a second hardness of the proximal liner section, and wherein the distal liner section is less lubricious than the proximal liner section;
- and
- positioning an outer jacket over the inner liner.
A catheter comprising:
- an elongated body including proximal and distal portions, the distal portion of the elongated body comprising:
- an inner liner comprising a proximal liner section and a distal liner section formed from different materials, the proximal liner section comprising a fluoropolymer and the distal liner section comprising a thermoplastic elastomer, wherein the distal liner section has a first hardness less than a second hardness of the proximal liner section, and wherein the distal liner section is less lubricious than the proximal liner section;
- and
- an outer jacket positioned over the inner liner.
Dependencies are inferred from the claim text.