Rolled tip recovery catheter

Patent metadata

Field	Value
Publication number	US-9901709-B2
Application number	US-201414268228-A
Country	US
Kind code	B2
Filing date	May 2, 2014
Priority date	Feb 14, 2001
Publication date	Feb 27, 2018
Grant date	Feb 27, 2018

Abstract

A distal tip for use with a medical catheter. The tip includes a member having a wall which defines a lumen therewithin. The wall has a portion at a distal end thereof, the portion curving inwardly toward an axis of the lumen. The lumen is provided with a diameter adaptable to accommodate a device to be recovered therewithin.

First claim

The invention claimed is:

1. A method of retrieving a medical device from within a body vessel, the method comprising:
advancing a retrieval catheter into the body vessel with a distal tip of the retrieval catheter in an original, undeflected configuration;
contacting the medical device with the distal tip of the retrieval catheter;
drawing the medical device into the retrieval catheter such that the distal tip of the retrieval catheter is moved proximally and then subsequently moved radially outward in relation to a central longitudinal axis of the retrieval catheter; and
after the distal tip of the retrieval catheter is moved radially outward in relation to the central longitudinal axis of the retrieval catheter, drawing the medical device further into the retrieval catheter such that the distal tip of the retrieval catheter is moved radially inward in relation to the central longitudinal axis of the retrieval catheter and returned substantially to the original, undeflected configuration.

2. The method of claim 1 , wherein drawing the medical device further into the retrieval catheter such that the distal tip of the retrieval catheter is moved radially inward in relation to the central longitudinal axis of the retrieval catheter and returned substantially to the original, undeflected configuration includes moving the distal tip of the retrieval catheter distally.

3. The method of claim 1 , wherein drawing the medical device into the retrieval catheter includes reducing a distance between a distal end of the retrieval catheter and a proximal end of the retrieval catheter along the central longitudinal axis of the retrieval catheter.

4. The method of claim 1 , wherein drawing the medical device into the retrieval catheter includes positioning a portion of the distal tip within a lumen defined by the retrieval catheter.

5. The method of claim 1 , wherein advancing the retrieval catheter into the body vessel includes advancing the retrieval catheter into a blood vessel.

6. The method of claim 1 further including positioning a guidewire within the body vessel.

7. The method of claim 6 , wherein advancing the retrieval catheter into the body vessel includes advancing the retrieval catheter over the guidewire.

8. The method of claim 1 further including remotely visualizing the retrieval catheter within the body vessel.

9. The method of claim 8 , wherein remotely visualizing the retrieval catheter within the body vessel includes visualizing a radiopaque portion of the retrieval catheter.

10. The method of claim 9 , wherein visualizing the radiopaque portion of the retrieval catheter includes visualizing a radiopaque marker located adjacent the distal tip.

11. The method of claim 1 , wherein the distal tip of the retrieval catheter is formed from a resilient material, and wherein moving the distal tip of the retrieval catheter radially inward comprises fully housing the medical device within a lumen of the retrieval catheter.

12. The method of claim 1 , wherein the distal tip has a first inner diameter at a distal end of the distal tip and a second inner diameter at a proximal end of the distal tip, the first inner diameter being smaller than the second inner diameter.

13. The method of claim 12 , wherein the medical device has an outer diameter greater than the first inner diameter.

14. The method of claim 1 , wherein the distal tip defines a lumen that tapers in a distal direction, and wherein drawing the medical device into the retrieval catheter comprises drawing the medical device into the lumen.

15. The method of claim 1 , wherein drawing the medical device into the retrieval catheter such that the distal tip of the retrieval catheter is moved proximally comprises drawing the medical device into the retrieval catheter such that the distal tip of the retrieval catheter is moved proximally inward.

16. A method of retrieving a medical device from within a body vessel, the method comprising:
advancing a retrieval catheter into the body vessel;
contacting the medical device with a distal tip of the retrieval catheter; and
drawing the medical device into the retrieval catheter such that the distal tip of the retrieval catheter is moved proximally and then subsequently moved radially outward in relation to a central longitudinal axis of the retrieval catheter, wherein drawing the medical device into the retrieval catheter includes drawing an embolic protection device into the retrieval catheter; and
after the distal tip of the retrieval catheter is moved radially outward in relation to the central longitudinal axis of the retrieval catheter, drawing the medical device further into the retrieval catheter such that the distal tip of the retrieval catheter is moved radially inward in relation to the central longitudinal axis of the retrieval catheter.

17. A method of retrieving a medical device from within a body vessel, the method comprising:
advancing a retrieval catheter into the body vessel with a distal tip of the retrieval catheter in an original, undeflected configuration;
contacting the medical device with the distal tip of the retrieval catheter;
drawing the medical device into the retrieval catheter such that the distal tip of the retrieval catheter is moved proximally and a distance defined between a distal end of the retrieval catheter and a proximal end of the retrieval catheter along a central longitudinal axis of the retrieval catheter is reduced; and
after the distal tip of the retrieval catheter is moved proximally, drawing the medical device further into the retrieval catheter such that the distal tip of the retrieval catheter is returned substantially to the original, undeflected configuration.

18. The method of claim 17 , wherein drawing the medical device into the retrieval catheter includes positioning a portion of the distal tip within a lumen defined by the retrieval catheter.

19. The method of claim 17 , wherein drawing the medical device into the retrieval catheter includes deflecting the distal tip of the retrieval catheter.

20. The method of claim 19 , wherein deflecting the distal tip of the retrieval catheter includes moving the distal tip of the retrieval catheter radially outward in relation to a central longitudinal axis of the retrieval catheter.

21. The method of claim 17 , wherein advancing the retrieval catheter into the body vessel includes advancing the retrieval catheter into a blood vessel.

22. The method of claim 17 , wherein the distal tip has a first inner diameter at a distal end of the distal tip and a second inner diameter at a proximal end of the distal tip, the first inner diameter being smaller than the second inner diameter.

23. The method of claim 22 , wherein the medical device has an outer diameter greater than the first inner diameter.

24. The method of claim 17 , wherein the distal tip defines a lumen that tapers in a distal direction, and wherein drawing the medical device into the retrieval catheter comprises drawing the medical device into the lumen.

25. The method of claim 17 , wherein drawing the medical device further into the retrieval catheter such that the distal tip of the retrieval catheter is returned substantially to the original, undeflected configuration includes moving the distal tip of the retrieval catheter distally in relation to the central longitudinal axis of the retrieval catheter.

26. The method of claim 17 , wherein drawing

Assignees

• Covidien Lp

Inventors

• Russo Patrick P
• Oslund John C

Classifications

• A61M2025/0079

  Separate user-activated means, e.g. guidewires, guide tubes, balloon catheters or sheaths, for sealing off an orifice, e.g. a lumen or side holes, of a catheter · CPC title

• A61F2230/0067

  conical · CPC title

• A61M2025/0081

  Soft tip · CPC title

• A61M25/0069

  Tip not integral with tube · CPC title

• A61M25/0082 Primary

  Catheter tip comprising a tool · CPC title