Guide catheter with reinforcing member

Patent metadata

Field	Value
Publication number	US-11844909-B2
Application number	US-202117199246-A
Country	US
Kind code	B2
Filing date	Mar 11, 2021
Priority date	Mar 23, 2020
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

Example medical devices are disclosed. An example medical device includes an elongate member having a proximal end region, a distal end region and an outer surface. The medical device also includes a plurality of filaments braided together in a first braided pattern along a first braided region of the elongate member, wherein the plurality of filaments extend continuously to a second braided region along the elongate member, wherein the plurality of filaments along the second braided region form a second braided pattern different from the first braided pattern.

First claim

What is claimed is:

1. A medical device, comprising:
an elongate member having a proximal end region, a distal end region and an outer surface;
a plurality of filaments braided together in a first braided pattern along a first braided region of the elongate member, wherein the plurality of filaments extend continuously to a second braided region along the elongate member, wherein the plurality of filaments along the second braided region form a second braided pattern different from the first braided pattern;
wherein a first filament of the plurality of filaments extends along the first braided region in a first rotational direction, and wherein the first filament of the plurality of filaments extends along the second braided region in a second rotational direction different from the first rotational direction, and wherein the first filament changes rotational direction from the first rotational direction to the second rotational direction along a transition region positioned between the first braided region and the second braided region;
wherein a first filament of the plurality of filaments extends parallel to a second filament of the plurality of filaments to form a first pair of filaments in the second braided region, and wherein the first filament is in a first proximity relative to the second filament;
wherein a third filament of the plurality of filaments extends parallel to a fourth filament of the plurality of filaments to form a second pair of filaments in the second braided region, and wherein the third filament is in a second proximity relative to the fourth filament;
wherein the first pair of filaments is interwoven with the second pair of filaments in the second braided region; and
wherein the first pair of filaments is in a third proximity relative to the second pair of filaments, and wherein the third proximity is different from the first proximity and the second proximity.

2. The medical device of claim 1 , wherein the plurality of filaments continuously transition from the first braided pattern to the second braided pattern along the transition region.

3. The medical device of claim 1 , wherein the filaments forming the first braided pattern are interwoven in a diamond-half load braid pattern.

4. The medical device of claim 1 , wherein the filaments forming the first braided pattern are interwoven in a herringbone braid pattern.

5. The medical device of claim 1 , wherein the plurality of filaments of the first braided region define a first pitch angle, and wherein the plurality filaments of the second braided region define a second pitch angle different from the first pitch angle.

6. The medical device of claim 1 , wherein the third proximity is greater than the first proximity and the second proximity.

7. The medical device of claim 1 , wherein the first proximity defines that the first filament is touching the second filament and wherein the second proximity defines that the third filament is touching the fourth filament.

8. The medical device of claim 1 , wherein the first pair of filaments is interwoven with the second pair of filaments in diamond-full load braid pattern.

9. The medical device of claim 1 , wherein the plurality of filaments are disposed along the outer surface of the elongate tubular member.

10. The medical device of claim 2 , wherein the transition region includes a length between 0.040 inches and 0.060 inches.

11. A guide catheter, comprising:
an elongate shaft having a lumen, an outer surface and a plurality of reinforcing wires disposed along the outer surface;
wherein the plurality of reinforcing wires are interwoven in a first braided pattern along a first braided region of the elongate shaft, and wherein the plurality of reinforcing wires extend continuously to a second braided region, and wherein the plurality of reinforcing wires of the second braided region form a second braided pattern different from the first braided pattern;
wherein a first filament of the plurality of filaments extends along the first braided region in a first rotational direction, and wherein the first filament of the plurality of filaments extends along the second braided region in a second rotational direction different from the first rotational direction, and wherein the first filament changes rotational direction from the first rotational direction to the second rotational direction along a transition region positioned between the first braided region and the second braided region;
wherein a first wire of the plurality of wires extends parallel to a second wire of the plurality of wires to form a first pair of wires in the second braided region, and wherein the first wire is in a first proximity relative to the second wire;
wherein a third wire of the plurality of wire extends parallel to a fourth wire of the plurality of wires to form a second pair of wires in the second braided region, and wherein the third wire is in a second proximity relative to the fourth wire; and
wherein the first pair of wires is in a third proximity relative to the second pair of wires, and wherein the third proximity is different from the first proximity and the second proximity.

12. The guide catheter of claim 11 , wherein the plurality of reinforcing wires continuously transition from the first braided pattern to the second braided pattern along the transition region.

13. The guide catheter of claim 11 , wherein the reinforcing wires forming the first braided pattern are interwoven in a diamond-half load braid pattern.

14. The guide catheter of claim 11 , wherein the reinforcing wires forming the first braided pattern are interwoven in a herringbone braid pattern.

15. The guide catheter of claim 11 , wherein the third proximity is greater than the first proximity and the second proximity.

16. The guide catheter of claim 11 , wherein the first proximity defines that the first wire is touching the second wire and wherein the second proximity defines that the third wire is touching the fourth wire.

17. The guide catheter of claim 11 , wherein the first pair of wires is interwoven with the second pair of wires in the second braided region.

18. The guide catheter of claim 17 , wherein the first pair of wires is interwoven with the second pair of wires in a diamond-full load braid pattern.

19. A medical device, comprising:
an elongate member having a proximal end region, a distal end region and an outer surface;
a plurality of filaments extending continuously along the elongate member, wherein the plurality of filaments are braided together in a first braided pattern along a first braided region of the elongate member, a second braided pattern along a second braided region of the elongate member, and a third braided pattern along a transition region of the elongate member, wherein the transition region is positioned between the first braided region and the second braided region;
wherein a first filament of the plurality of filaments is separated from a second filament of the plurality of filaments along the first braided region; and
wherein the first filament of the plurality of filaments extends parallel to the second filament of the plurality of filaments to form a first pair of wires in the second braided region; and
wherein the first filament of the plurality of filaments is touching the second filament of the plurality of filaments along the second braided region.

Assignees

• Boston Scient Scimed Inc

Inventors

• Tassoni Jr Anthony Frank
• Rubesch Timothy Lawrence
• Pepin Henry J
• Gupta Ajay

Classifications

• A61M25/005 Primary

  with embedded materials for reinforcement, e.g. wires, coils, braids · 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

• A61M25/0054

  with regions for increasing flexibility · CPC title