Catheters and related systems

Abstract

A catheter tube (102) includes an inner conduit (108) and a reinforcement structure (112). The reinforcement structure includes a coiled wire (118) surrounding the inner conduit and a braided wire assembly (120) surrounding the coiled wire. The reinforcement structure is configured to cause the inner conduit to resist radial deformation as a medical device is moved through the inner conduit. A medical intervention system includes the example catheter and an example medical device that can be deployed and implanted using the catheter (100).

Description

The abstract catheter (102) includes an inner conduit (108) and a reinforcing structure (112). The reinforcing structure includes a helix (118) surrounding the inner conduit and a braided wire assembly (120) surrounding the helix. The reinforcing structure is configured to resist radial deformation of the inner conduit as a medical device moves through it. A medical intervention system includes an example catheter and an example medical device that can be deployed and implanted using the catheter (100).

Claims

Attorney Docket No. 57006-0009W01WHAT IS CLAIMED IS:

1. A catheter tub e compri sing : an inner conduit; and a reinforcement structure comprising: a coiled wire surrounding the inner conduit, and a braided wire assembly surrounding the coiled wire, wherein the reinforcement structure is configured to cause the inner conduit to resist radial deformation as a medical device is moved through the inner conduit.

2. The catheter tube of claim 1, wherein the catheter tube is a 5 French catheter tube.

3. The catheter tube of any of the preceding claims, wherein a hardness of the inner conduit varies along a length of the inner conduit.

4. The catheter tube of any of the preceding claims, wherein the coiled wire has a pitch of about 0.15 mm to about 0.20 mm.

5. The catheter tube of any of the preceding claims, wherein the braided wire assembly comprises a plurality of wires that overlap each other in regular pattern to form a plurality of openings.

6. The catheter tube of claim 5, wherein the plurality of wires comprises 16 wires.

7. The catheter tube of any of claims 5-6, wherein the braided wire assembly has a braid density of 65 pics per inch (PPI) to 75 PPI.

8. The catheter tube of any of the preceding claims, further comprising one or more marker bands that are configured to provide visualization of the catheter tube while the catheter tube is disposed within a patient’s body.Attorney Docket No. 57006-0009W019. The catheter tube of claim 8, wherein the one or more marker bands comprise three marker bands that are equally spaced from one another.

10. The catheter tube of any of claims 8-9, wherein the one or marker bands overlap the reinforcement structure.

11. The catheter tube of any of claims 8-10, wherein each of the one or more maker bands comprises one or more radiopaque materials.

12. The catheter tube of any of the preceding claims, further comprising an outer layer that encapsulates the reinforcement structure and an outer surface of the inner conduit.

13. The catheter tube of claim 12, wherein the outer layer comprises a coating.

14. The catheter tube of any of the preceding claims, wherein the inner conduit defines a single lumen that is sized to accommodate the medical device.

15. A medical intervention system comprising: a medical device; and a catheter tube comprising: an inner conduit, and a reinforcement structure comprising: a coiled wire surrounding the inner conduit, and a braided wire assembly surrounding the coiled wire, wherein the reinforcement structure is configured to cause the inner conduit to resist radial deformation as the medical device is moved through the inner conduit.

16. The medical intervention system of claim 15, wherein the medical device comprises a stent that is configured to be implanted at a target location within a patient’s body.Attorney Docket No. 57006-0009W0117. The medical intervention system of claim 16, wherein the target location comprises a portion of a blood vessel within the patient’s neurovasculature.

18. The medical intervention system of any of claims 15-17, further comprising a navigation device sized to be positioned within the catheter tube.

19. The medical intervention system of any of claims 15-18, wherein the navigation device comprises a main shaft and a radiopaque distal section.

20. The medical intervention system of claim 19, wherein the radiopaque distal section comprises a substantially cylindrical distal shaft and a tapered distal tip that is configured to extend from a distal end of the catheter tube while the catheter tube is moved through a patient’s body.

21. A method of performing a medical intervention, the method comprising: moving a medical device through an inner conduit of a catheter tube; and while the medical device is moving through the inner conduit, causing the inner conduit to resist radial deformation with a reinforcement structure of the catheter tube, wherein the reinforcement structure comprises: a coiled wire surrounding the inner conduit, and a braided wire assembly surrounding the coiled wire.

22. The method of claim 21, further comprising moving the medical device past a distal end of the catheter tube to implant the medical device at a target location within a patient’s body.

23. The method of claim 22, wherein the target location comprises a portion of a blood vessel of the neurovasculature.

24. The method of any of claims 21-23, wherein the medical device comprises a stent.

25. The method of any of claims 21-24, wherein the catheter tube is a 5 French catheter tube.Attorney Docket No. 57006-0009W0126. The method of any of claims 21-25, further comprising causing the inner conduit to maintain a substantially circular cross-sectional shape while the medical device is moved through the inner conduit.

27. The method of any of claims 21-26, further comprising visualizing the catheter tube while the catheter tube is within a patient’s body.

28. The method of claim 27, wherein the catheter tube further comprises one or more radiopaque marker bands.

29. The method of any of claims 21-28, further comprising, prior to moving the medical device through the inner conduit of the catheter tube: placing a navigation device within the catheter tube; and guiding the catheter tube to a target location within the patient’s body using the navigation device.

30. The method of claim 29, wherein the navigation device comprises a main shaft and a radiopaque distal section, and wherein the radiopaque distal section comprises a substantially cylindrical distal shaft and a tapered distal tip that is configured to extend from a distal end of the catheter tube while the catheter tube is in use.

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