IP Library › Granted Patent US 12,296,082
Granted Patent B2
US 12,296,082 · App. 17/749,454 · Granted May 13, 2025

Methods and systems for establishing retrograde carotid arterial blood flow

Inventors: Enrique Criado (Sunnyvale, CA); Tony M. Chou (San Mateo, CA); Michi E. Garrison (Sunnyvale, CA); Gregory M. Hyde (Sunnyvale, CA); Alan Schaer (Sunnyvale, CA); Richard Renati (Sunnyvale, CA)
Assignee: BOSTON SCIENTIFIC SCIMED, INC.
A61M1/3655A61B8/06A61B8/488A61B17/12045A61B17/12109A61F2/82A61F2/95A61M1/34A61M1/36A61M1/3613A61M1/3659A61M5/007A61M25/10A61M29/02A61M39/06A61M39/22A61B2017/00778A61B2017/12127A61B2017/320716A61F2002/065A61F2/90A61F2/954A61F2250/0037A61M2025/1052A61M2205/33A61M2205/3331A61M2205/3334
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Quick Facts
Patent No.
US 12,296,082
App. No.
17/749,454
Granted
May 13, 2025
Kind
B2
Abstract

Interventional procedures on the carotid arteries are performed through a transcervical access while retrograde blood flow is established from the internal carotid artery to a venous or external location. A system for use in accessing and treating a carotid artery includes an arterial access device, a shunt fluidly connected to the arterial access device, and a flow control assembly coupled to the shunt and adapted to regulate blood flow through the shunt between at least a first blood flow state and at least a second blood flow state. The flow control assembly includes one or more components that interact with the blood flow through the shunt.

Claims (35)

1. A method for treating a carotid artery, comprising:

positioning an arterial access sheath into a common carotid artery via an insertion site in the patient's neck, wherein the arterial access sheath is formed of an elongated body sized and shaped to be introduced into a common carotid artery, the arterial access sheath having an internal lumen that can receive blood flow, and wherein the arterial access sheath is configured to be coupled to an extracorporeal shunt that fluidly communicates with the arterial access sheath, wherein the shunt provides a pathway for blood to flow from the arterial access sheath, and wherein the shunt is coupled to a flow control assembly, wherein the flow control assembly defines two or more parallel flow paths and a valve to open or close one or more of the flow paths to selectively direct blood flow through one or more of the flow paths;

treating an artery via the arterial access sheath.

2. A method as in claim 1 , wherein the arterial access sheath is percutaneously positioned into the common carotid artery.

3. A method as in claim 1 , wherein the arterial access sheath is positioned into the common carotid artery via an incision in a neck of a patient.

4. A method as in claim 1 , further comprising aspirating blood from the common carotid artery via the arterial access sheath.

5. A method as in claim 1 , wherein treating the artery comprises inserting a stent delivery device through the arterial access sheath.

6. A method as in claim 5 , further comprising deploying a stent in the artery.

7. A method as in claim 1 , wherein the artery is the common carotid artery.

8. A method as in claim 1 , wherein the shunt is coupled to a blood filter.

9. A method as in claim 1 , wherein the sheath is positioned via access site located at distance of 5 cm to 7 cm below a bifurcation location where the patient's common carotid artery bifurcates into the internal carotid artery and external carotid artery.

10. A method as in claim 9 , wherein the arterial access sheath has a predetermined working length configured to insert into the common carotid artery, wherein the working length of the arterial access sheath is 5 cm to 15 cm.

11. A method as in claim 10 , further comprising inserting no more than the working length of the arterial access sheath into the common carotid artery.

12. A method as in claim 1 , further comprising shunting blood from the common carotid artery to a site.

13. A method as in claim 12 , wherein the site comprises a vein.

14. A method as in claim 13 , wherein the site comprises a femoral vein.

15. A method as in claim 12 , wherein the site comprises an external container.

16. A method as in claim 1 , further comprising blocking blood flow from the common carotid artery past the sheath.

17. A method as in claim 1 , further comprising using a syringe to aspirate blood from the common carotid artery via the sheath.

18. A method as in claim 1 , further comprising clamping the carotid artery to occlude blood flow through the carotid artery.

19. A method as in claim 5 , wherein treating the artery further comprises deploying a stent.

20. A method as in claim 5 , wherein treating the artery comprises treating an artery at a location distal of the insertion site.

21. A method as in claim 19 , wherein the stent is covered with a material.

22. A method for treating a carotid artery, comprising:

positioning an arterial access sheath into a common carotid artery via an insertion site in a patient's neck, wherein the arterial access sheath is formed of an elongated body sized and shaped to be introduced into a common carotid artery, the arterial access sheath having an internal lumen that can receive blood flow, and wherein the arterial access sheath is configured to be coupled to an extracorporeal shunt that fluidly communicates with the arterial access sheath, wherein the shunt provides a pathway for blood to flow from the arterial access sheath, and wherein the shunt is coupled to a flow control assembly, wherein the flow control assembly defines two or more parallel flow paths and a valve to open or close one or more of the flow paths to selectively direct blood flow through one or more of the flow paths;

inserting a stent delivery device through the arterial access sheath;

deploying a stent in an artery at a location distal of the insertion site.

23. A method as in claim 21 , wherein the arterial access sheath is percutaneously positioned into the common carotid artery.

24. A method as in claim 21 , wherein the arterial access sheath is positioned into the common carotid artery via an incision in a neck of a patient.

25. A method as in claim 21 , further comprising aspirating blood from the common carotid artery.

26. A method as in claim 21 , wherein the sheath is positioned via access site located at distance of 5 cm to 7 cm below a bifurcation location where the patient's common carotid artery bifurcates into the internal carotid artery and external carotid artery.

27. A method as in claim 26 , wherein the arterial access sheath has a predetermined working length configured to insert into the common carotid artery, wherein the working length of the arterial access sheath is 5 cm to 15 cm.

28. A method as in claim 27 , further comprising inserting no more than the working length of the arterial access sheath into the common carotid artery.

29. A method as in claim 21 , further comprising blocking blood flow from the common carotid artery past the sheath.

30. A method as in claim 1 , further comprising clamping the carotid artery to occlude blood flow through the carotid artery.

Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Mar 28, 2025
From: SILK ROAD MEDICAL, INC.
To: BOSTON SCIENTIFIC SCIMED, INC.
Reel/Frame 070671/0426 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Aug 31, 2023
From: CRIADO, ENRIQUE; CHOU, TONY M.; GARRISON, MICHI E.; HYDE, GREGORY M.; SCHAER, ALAN; RENATI, RICHARD
To: SILK ROAD MEDICAL, INC.
Reel/Frame 064762/0463 →
SECURITY INTEREST Recorded Jul 11, 2023
From: SILK ROAD MEDICAL, INC.
To: OXFORD FINANCE LLC
Reel/Frame 064252/0197 →
Continuity (14)
Continuation 17345502 · Jun 11, 2021
Continuation 16894474 · Jun 5, 2020
Continuation 16581061 · Sep 24, 2019
Continuation 16410485 · May 13, 2019
Continuation 16377663 · Apr 8, 2019
Continuation 16210533 · Dec 5, 2018
Continuation 16008703 · Jun 14, 2018
Continuation 15728747 · Oct 10, 2017
Continuation 15168809 · May 31, 2016
Continuation 14475346 · Sep 2, 2014
Continuation 13050876 · Mar 17, 2011
Continuation 12176250 · Jul 18, 2008
Provisional Application 61026308 · Feb 5, 2008
Related Publication 20230097442A1 · Mar 30, 2023
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