Thin-walled catheter

Patent metadata

Field	Value
Publication number	US-2016346507-A1
Application number	US-201514725174-A
Country	US
Kind code	A1
Filing date	May 29, 2015
Priority date	May 29, 2015
Publication date	Dec 1, 2016
Grant date	—

Abstract

In some examples, a catheter body of a catheter comprises an inner liner defining an inner lumen of the elongated body, an outer jacket, and a coil member positioned between at least a portion of the inner liner and the outer jacket. The coil member is adhered to the inner liner with a thermoset adhesive, and the coil member and the inner liner are not adhered to the outer jacket.

First claim

What is claimed is:

1 . A catheter comprising:
an elongated body comprising: an inner liner defining an inner lumen of the elongated body; an outer jacket; and a coil member positioned between at least a portion of the inner liner and the outer jacket, wherein the coil member is adhered to the inner liner with a thermoset adhesive, and wherein the coil member and the inner liner are not adhered to the outer jacket.

2 . The catheter of claim 1 , wherein the thermoset adhesive is not positioned between the coil member and the outer jacket.

3 . The catheter of claim 2 , wherein substantially no adhesive is present between the coil member and the outer jacket.

4 . The catheter of claim 2 , wherein substantially no material is present between the coil member and the outer jacket.

5 . The catheter of claim 1 , wherein the thermoset adhesive comprises a urethane adhesive.

6 . The catheter of claim 1 , wherein the outer jacket comprises a plurality of segments having different durometers.

7 . The catheter of claim 6 , wherein the outer jacket segments are situated longitudinally adjacent to each other.

8 . The catheter of claim 1 , wherein the outer jacket comprises a plurality of segments formed from different materials.

9 . The catheter of claim 8 , wherein the outer jacket segments are situated longitudinally adjacent to each other.

10 . The catheter of claim 1 , wherein the outer jacket comprises a heat-shrinkable material, the outer jacket being heat shrunk over the inner liner and the coil member.

11 . The catheter of claim 1 , wherein the elongated body tapers from at least a proximal portion having a first outer diameter to a distal portion having a second outer diameter smaller than the first diameter.

12 . The catheter of claim 11 , wherein the coil member tapers from a first coil diameter to the second coil diameter.

13 . The catheter of claim 11 , wherein the first outer diameter is about 6 French and the second outer diameter is about 5 French.

14 . The catheter of claim 11 , wherein the first outer diameter is about 4 French and the second outer diameter is about 3 French.

15 . The catheter of claim 1 , wherein the elongated body has only one coil member.

16 . The catheter of claim 1 , wherein the coil member comprises a nickel titanium alloy.

17 . A catheter comprising:
an elongated body comprising: an inner liner defining an inner lumen of the elongated body; an outer jacket; and a coil member positioned between at least a portion of the inner liner and the outer jacket, wherein the coil member is adhered to the inner liner with a thermoset adhesive, and wherein the elongated body is devoid of any adhesive between the coil member and the outer jacket.

18 . The catheter of claim 17 , wherein the elongated body is substantially devoid of any material between the outer surface of the coil member and the inner surface of the outer jacket.

19 . The catheter of claim 17 , wherein the thermoset adhesive comprises a urethane adhesive.

20 . The catheter of claim 17 , wherein the outer jacket comprises a plurality of segments having different durometers.

21 . The catheter of claim 20 , wherein the outer jacket segments are situated longitudinally adjacent to each other.

22 . The catheter of claim 17 , wherein the elongated body tapers from at least a proximal portion having a first outer diameter to a distal portion having a second outer diameter smaller than the first diameter.

23 . The catheter of claim 22 , wherein the coil member tapers from a first coil diameter to a second coil diameter.

24 . The catheter of claim 17 , wherein the elongated body has only one coil member.

Assignees

• Covidien Lp

Inventors

• Jackson Brad
• Huynh Anthony
• Nguyen John

Classifications

• A61M25/0045

  multi-layered, e.g. coated (coating materials A61L29/08) · CPC title

• A61M25/0012

  with embedded structures, e.g. coils, braids, meshes, strands or radiopaque coils · CPC title

• A61M25/0053 Primary

  having a variable stiffness along the longitudinal axis, e.g. by varying the pitch of the coil or braid · CPC title

• A61M2025/0059

  having means for preventing the catheter, sheath or lumens from collapsing due to outer forces, e.g. compressing forces, or caused by twisting or kinking · CPC title

• B29C65/48

  using adhesives {, i.e. using supplementary joining material; solvent bonding} · CPC title