Distal access aspiration guide catheter

Patent metadata

Field	Value
Publication number	US-10130789-B2
Application number	US-201213537246-A
Country	US
Kind code	B2
Filing date	Jun 29, 2012
Priority date	Jun 30, 2011
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

Abstract

Distal access aspiration guide catheter system and methods for delivering implantable devices, catheters, or substances in or near and/or restoring flow through body lumens, such as blood vessel lumens are described. A distal access aspiration guide catheter having a proximal, medial, and distal possessing high flexibility, high resistance to kinking and a large lumen to wall thickness ratio.

First claim

The invention claimed is:

1. A catheter device comprising: a catheter body comprising: a tubular member having a lumen and an outer surface, the tubular member comprising a coil defining a plurality of winds separated by gaps and a polymeric material disposed within the gaps, wherein the coil includes a proximal coil portion and a distal coil portion, the distal coil portion being positioned between the proximal coil portion and a distal end of the catheter body, the gaps in the distal coil portion each having a width between about 0.006 inches and about 0.010 inches, and the gaps in the proximal coil portion each having a width between about 0.0005 inches and about 0.002 inches; an inner liner extending through the lumen of the tubular member and defining an inner lumen of the catheter body; and an outer covering on the outer surface of the tubular member, wherein the polymeric material disposed within the gaps comprises a proximal polymeric material portion and a distal polymeric material portion, the distal polymeric material portion being positioned between the proximal polymeric material portion and the distal end of the catheter body, wherein the proximal polymeric material portion is stiffer than the distal polymeric material portion, and wherein the polymeric material disposed within the gaps is different from the materials of the inner liner and outer covering, and wherein a distal region of the catheter body has an inner diameter to wall thickness ratio greater than or equal to 16:1; and a hydrophilic coating on an outer surface of the outer covering.

2. The catheter device according to claim 1 wherein the coil comprises a nickel titanium alloy.

3. The catheter device according to claim 1 wherein the coil is a metal helix.

4. The catheter device according to claim 1 wherein the polymeric material comprises an elastomer.

5. The catheter device according to claim 1 wherein the inner liner comprises at least one material selected from the group consisting of: fluoropolymers; polytetrafluoroethylene (PTFE); perfluoroalkoxy (PFA); and fluorinated ethylene propylene (FEP).

6. The catheter device according to claim 1 wherein the outer covering comprises at least one material selected from the group consisting of: polyesters and polyolefins.

7. The catheter device according to claim 1 wherein the catheter body further has a proximal region and a medial region, the outer covering on the proximal region comprises polyester having a thickness of about 0.001 inch, the outer covering on the medial region comprises polyester having a thickness of about 0.0005 inch, and the outer covering on the distal region comprises polyolefin having a thickness of about 0.0005 inch.

8. The catheter device according to claim 1 wherein the catheter body further has a proximal region and a medial region, wherein the distal region has a lateral flexibility of greater than 1200 degrees of deflection per inch-pound force.

9. The catheter device according to claim 1 wherein the distal region has a kink radius of about 0.174 inch +/−0.008 inch or less.

10. The catheter device according to claim 1 wherein the polymeric material disposed within the gaps is a thermoset polymer.

11. The catheter device according to claim 1 wherein the gaps in the proximal coil portion each have a width of about 0.001 inches and the gaps in the distal coil portion each have a width of about 0.008 inches.

12. The catheter device according to claim 1 wherein the coil is formed from a wire having a thickness of about 0.0005 inches to about 0.005 inches.

13. The catheter device according to claim 1 wherein coil is formed from a wire having a width of about 0.001 inches to about 0.010 inches.

14. The catheter device according to claim 1 wherein the inner liner has an etched exterior surface.

15. The catheter device according to claim 1 wherein the inner diameter to wall thickness ratio of the distal region of the catheter body is between about 16:1 and about 24:1.

16. The catheter device according to claim 1 wherein the polymeric material comprises a cast polyurethane.

17. The catheter device according to claim 16 wherein the cast polyurethane comprises a thermoset polyurethane adhesive.

18. The catheter device according to claim 1 wherein the coil further includes a medial coil portion, the gaps in the medial coil portion each having a width between about 0.002 inches and about 0.006 inches.

19. The catheter device according to claim 18 wherein the gaps in the medial coil portion each have a width of about 0.004 inches.

20. A guide catheter section comprising: an elongate tubular catheter body having a proximal end and a distal end and a passageway defining an inner lumen extending between those ends, the elongate tubular catheter body comprising an inner tubular liner of a first liner material in coaxial relationship with an outer tubular cover and a tubular member between the inner liner and outer cover, the tubular member comprising a metallic coil structure defining metallic winds and a polymeric kink resistance member filling the gap within the metallic winds, wherein the polymeric kink resistance member comprises a proximal adhesive portion and a distal adhesive portion, the distal adhesive portion being positioned between the proximal adhesive portion and the distal end of the catheter body, wherein the proximal adhesive portion is stiffer than the distal adhesive portion, the catheter section, in the region of the distal end, having an inner diameter to wall thickness ratio in greater than or equal to 16:1 and a kink radius of about 0.174 inch +/−0.008 inch or less, wherein the inner liner has an etched exterior surface, wherein the metallic coil structure includes a proximal coil portion and a distal coil portion, the distal coil portion being positioned between the proximal coil portion and the distal end of the catheter body, the gaps in the distal portion each having a width between about 0.006 inches and about 0.010 inches, and the gaps in the proximal coil portion each having a width between about 0.0005 inches and about 0.002 inches.

21. A method comprising: inserting into a subject's vasculature a catheter device comprising: a catheter body comprising: a tubular member having a lumen and an outer surface, the tubular member comprising a coil defining a plurality of winds separated by gaps and a polymeric material disposed within the gaps, wherein the coil includes a proximal coil portion and a distal coil portion, the distal coil portion being positioned between the proximal coil portion and a distal end of the tubular member, the gaps in the distal coil portion each having a width between about 0.006 inches and about 0.010 inches, and the gaps in the proximal coil portion each having a width between about 0.0005 inches and about 0.002 inches; an inner liner extending through the lumen of the tubular member and defining an inner lumen of the catheter body; an outer covering on the outer surface of the tubular member; and a hydrophilic coating on an outer surface of the outer covering, wherein the polymeric material disposed within the gaps comprises a proximal polymeric material portion and a distal polymeric material portion, the distal polymeric material portion being positioned between the proximal polymeric material portion and the distal end of the catheter body, wherein the proximal polymeric material portion is stiffer than the distal polymeric material portion, and wherein the polymeric material disposed within the gaps is different f

Assignees

• Shimada Lynn
• Torres Seferino
• Strauss Brian
• Valko Jeffrey
• Covidien Lp

Inventors

• Shimada Lynn
• Torres Seferino
• Strauss Brian
• Valko Jeffrey

Classifications

• A61M25/0052

  Localized reinforcement, e.g. where only a specific part of the catheter is reinforced, for rapid exchange guidewire port · 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

• A61M25/0009

  Making of catheters or other medical or surgical tubes · CPC title

• A61M25/0668

  splittable, tear apart · CPC title

• A61M2025/1052

  for temporarily occluding a vessel for isolating a sector · CPC title