Restoring blood flow and clot removal during acute ischemic stroke

Patent metadata

Field	Value
Publication number	US-10413310-B2
Application number	US-201514611564-A
Country	US
Kind code	B2
Filing date	Feb 2, 2015
Priority date	Oct 17, 2007
Publication date	Sep 17, 2019
Grant date	Sep 17, 2019

Abstract

Devices for restoring blood flow to facilitate lysis of clots and/or enable capture of clots are disclosed. The devices can be configured to be disposed within a lumen of a microcatheter that is inserted within neurovasculature above a carotid siphon to a location of a clot. The devices can include an elongate pusher member and a self-expandable capturing member coupled to a distal end of the elongate pusher member. The capturing member can comprise a generally cylindrical body having an cell structure that is configured to compress the clot against an inner wall of the neurovasculature and capture the clot at least partially on a surface of the generally cylindrical body upon deployment of the capturing member from the microcatheter, thereby restoring blood flow to the neurovasculature downstream of the clot.

First claim

What is claimed is:

1. A method for removing an embolus from a blood vessel of a subject's neurovasculature, comprising:
delivering a capturing device to the blood vessel;
engaging the embolus with the capturing device; and
moving the embolus down the intracranial tree into the carotid siphon without moving the capturing device into a catheter.

2. The method of claim 1 , further comprising moving the embolus into the cavernous carotid without moving the capturing device into a catheter.

3. The method of claim 2 , further comprising moving the embolus into the common carotid without moving the capturing device into a catheter.

4. The method of claim 2 , further comprising retracting the capturing device into a catheter.

5. The method of claim 1 , wherein the embolus is removed from the blood vessel by withdrawing the capturing device without fragmenting the embolus.

6. A method for treating a subject having a clot in the subject's neurovasculature, the method comprising:
capturing at least a portion of a clot in the subject's neurovasculature with a capturing device; and
without recapturing the capturing device into a catheter, retracting the capturing device together with the captured portion of the clot into the carotid siphon.

7. The method of claim 6 , further comprising retracting the capturing device together with the captured portion of the clot into the cavernous carotid without recapturing the capturing device into a catheter.

8. The method of claim 7 , further comprising retracting the capturing device together with the captured portion of the clot into the common carotid without recapturing the capturing device into a catheter.

9. The method of claim 7 , further comprising retracting the capturing device into a catheter.

10. The method of claim 6 , wherein the captured portion of the clot is removed from the blood vessel by withdrawing the capturing device without fragmenting the embolus.

Assignees

• Covidien Lp

Inventors

• Ferrera David
• Cragg Andrew
• Fulkerson John

Classifications

• A61F2230/0069

  cylindrical · CPC title

• A61B2017/22094

  for crossing total occlusions, i.e. piercing · CPC title

• A61B17/320783

  through side-hole, e.g. sliding or rotating cutter inside catheter · CPC title

• A61B17/221 Primary

  Gripping devices in the form of loops or baskets {for gripping calculi or similar types of obstructions (surgical snare instruments A61B17/32056)} · CPC title

• A61B2017/2212

  having a closed distal end, e.g. a loop · CPC title