IP Library › Granted Patent US 12,396,743
Granted Patent B2
US 12,396,743 · App. 18/056,199 · Granted Aug 26, 2025

Retrieval systems and methods for use thereof

Inventors: Brian B. Martin (Felton, CA); Martin S. Dieck (Campbell, CA)
Assignee: Covidien LP
A61B17/221A61B17/22031A61B17/3207A61B17/320758A61F2/01A61F2/06A61F2/95A61F2/962A61B2017/22034A61B2017/3435A61B2560/04A61F2/011A61F2230/0006A61F2230/0093A61F2250/0098
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Quick Facts
Patent No.
US 12,396,743
App. No.
18/056,199
Granted
Aug 26, 2025
Kind
B2
Abstract

The devices and methods described herein relate to improved structures for removing obstructions from body lumens. Such devices have applicability in through-out the body, including clearing of blockages within the vasculature, by addressing the frictional resistance on the obstruction prior to attempting to translate and/or mobilize the obstruction within the body lumen.

Claims (29)

1. A device for deployment within a blood vessel using a catheter, the device comprising:

a shaft having a distal end and a proximal end;

a braided cover having a free and open distal section and a proximal end coupled to the shaft at a location proximal to the distal end of the shaft, wherein the proximal end comprises at least one peak pointing in a proximal direction and at least one valley pointing in a distal direction, wherein the braided cover is configured to self-expand against the vessel wall when deployed from the catheter; and

an expandable helical coils within the braided cover and configured to conform to a profile of the braided cover.

2. The device of claim 1 , wherein the braided cover comprises a nitinol braid.

3. The device of claim 1 , wherein the braided cover is formed from a mesh tube.

4. The device of claim 1 , wherein the braided cover permits continued blood flow through the blood vessel when self-expanded against the vessel wall.

5. The device of claim 1 , further comprising a node positioned on the shaft between the distal end and the proximal end.

6. The device of claim 5 , wherein the node is configured to obstruct movement of the braided cover relative to the shaft.

7. The device of claim 5 , wherein the node comprises a radiopaque marker band.

8. The device of claim 5 , wherein the node is a first node, and the device further comprises a second node positioned on the shaft between the distal end and the proximal end, the second node being spaced apart from the first node.

9. The device of claim 1 , further comprising a radiopaque marker at the proximal end of the braided cover.

10. The device of claim 1 , wherein the helical coil is radiopaque.

11. The device of claim 1 , wherein the helical coil is a single coil configured to provide radial support to the braided cover.

12. A device for deployment within a blood vessel using a catheter, the device comprising:

a shaft having a distal end and a proximal end; and

a cover configured to self-expand into contact with the vessel wall when deployed from the catheter, the cover including:

a mesh structure having a free and open distal section and a proximal end coupled to the shaft at a location proximal to the distal end of the shaft, wherein the proximal end comprises at least one peak pointing in a proximal direction and at least one valley pointing in a distal direction, and

an expandable helical coils inside the mesh structure and configured to conform to a profile of the mesh structure.

13. The device of claim 12 , wherein the mesh structure comprises a braid.

14. The device of claim 12 , wherein the mesh structure comprises a tube.

15. The device of claim 12 , wherein the cover permits continued blood flow through the blood vessel when self-expanded against the vessel wall.

16. The device of claim 12 , further comprising at least one anchor coupled to the shaft between the distal end portion and the proximal end portion.

17. The device of claim 16 , wherein the at least one anchor is configured to constrain translation of the cover along the shaft.

18. The device of claim 16 , wherein the at least one anchor comprises a radiopaque marker band.

19. The device of claim 16 , wherein the at least one anchor comprises a distal anchor and a proximal anchor.

20. The device of claim 12 , further comprising a radiopaque marker at the proximal end of the cover.

21. The device of claim 12 , wherein the helical coil is radiopaque.

22. The device of claim 12 , wherein the helical coil is a single coil configured to provide radial support to the mesh structure.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 17, 2022
From: MARTIN, BRIAN B.; DIECK, MARTIN S.
To: LAZARUS EFFECT, INC.
Reel/Frame 061803/0843 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Nov 17, 2022
From: LAZARUS EFFECT LLC
To: COVIDIEN LP
Reel/Frame 061803/0926 →
CHANGE OF NAME Recorded Nov 17, 2022
From: LAZARUS EFFECT, INC.
To: LAZARUS EFFECT LLC
Reel/Frame 061956/0009 →
Continuity (9)
Continuation 16530101 · Aug 2, 2019
Continuation 15946466 · Apr 5, 2018
Continuation 15174016 · Jun 6, 2016
Continuation 14446755 · Jul 30, 2014
Continuation 13959433 · Aug 5, 2013
Continuation PCTUS2012039216 · May 23, 2012
Provisional Application 61489254 · May 24, 2011
Provisional Application 61489183 · May 23, 2011
Related Publication 20230074271A1 · Mar 9, 2023
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