System and method for treating ischemic stroke

Patent metadata

Field	Value
Publication number	US-2017215902-A1
Application number	US-201715488349-A
Country	US
Kind code	A1
Filing date	Apr 14, 2017
Priority date	Oct 5, 2011
Publication date	Aug 3, 2017
Grant date	—

Abstract

A thromboembolic removal system for treating ischemic stroke, including a guide and occlusion catheter, a delivery and aspiration catheter, an aspiration pump, a thromboembolic receiver, and a thromboembolic separator.

First claim

What is claimed is:

1 . A method of manufacture of a system for removal of thromboembolic material from a blood vessel, the method comprising the steps of:
cutting a plurality of uprights and apexes from a length of tubing to form a separator element; adjoining some of the apexes to one another; mounting said separator element to an elongate element.

2 . The method according to claim 1 , wherein the step of cutting a plurality of uprights and apexes further comprises cutting said uprights generally parallel to one another throughout the length of the tubing, and cutting said apexes so that they extend at an angle to the uprights.

3 . The method according to claim 1 , wherein the step of cutting the apexes further comprises cutting the apexes in the wall of the tubing opposite one another.

4 . The method according to claim 1 , wherein the step of cutting the apexes further comprises cutting apex extensions.

5 . The method according to claim 1 , wherein the step of cutting the uprights and apexes further comprises cutting some of the apexes intermediate the length of the uprights.

6 . The method according to claim 1 , wherein the step of mounting the separator element further comprises mounting the separator element to the elongate element via one or more of the uprights.

7 . The method according to claim 1 , wherein the step of cutting the apexes comprises cutting a series of pairs of apexes along a longitudinal axis of the tubing, wherein each pair of apexes is oriented at 90° around the axis to each subsequent pair of apexes.

8 . A method of removal of thromboembolic material from a blood vessel of a subject, the method comprising the steps of:
introducing into the vessel proximate the thromboembolic material an elongate member having an expandable and collapsible separator element disposed at a distal end of the elongate member, the separator element comprising a plurality of uprights and a multiplicity of apexes extending between said uprights, wherein at least some of the uprights and a first group of apexes are disposed about a central longitudinal axis of the separator, and a second group of the apexes extend inwardly toward the central longitudinal axis of the separator.

9 . The method of claim 8 , wherein said separator comprises a length, said uprights are generally parallel to one another throughout said length, and said apexes extend at an angle to the uprights.

10 . The method according to claim 8 , wherein said uprights are generally parallel over an entire length of the separator, and said apexes are defined by struts that extend at an angle from their attachment points to the uprights until they meet a strut extending from an opposite direction.

11 . The method of claim 8 , wherein said second group of apexes is defined by pairs of opposing apexes coupled one to another.

12 . The method of claim 11 , wherein said pairs of opposing apexes comprise apex extensions and said apexes are coupled to one another via said apex extensions.

13 . The method of claim 8 , wherein said uprights comprise a length and some of said apexes extend from a position intermediate said length.

14 . The method of claim 8 , wherein said separator element is mounted to said elongate member via one or more of said uprights.

15 . The method of claim 8 , said separator further comprising a third group of apexes attached at their proximal ends to distal ends of a pair of uprights and at their distal ends to the proximal ends of an axially adjacent pair of uprights.

16 . The method of claim 8 , wherein said separator comprises a circumference, a proximal set of apexes and a distal set of apexes oriented at roughly ninety degrees around said circumference to said proximal set of apexes.

17 . The system of claim 8 , wherein said separator comprises a circumference and a series of apexes and wherein each apex is oriented at roughly ninety degrees around said circumference to an adjacent apex.

Assignees

• Penumbra Inc

Inventors

• Leynov Aleksander
• Barry David
• Gupta Vikas
• Bose Arani

Classifications

• 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

• A61M2025/1052

  for temporarily occluding a vessel for isolating a sector · CPC title

• A61B2017/22044

  with a pointed tip · CPC title

• A61B2017/00526

  Methods of manufacturing · CPC title

• A61B2217/005

  with suction drainage system · CPC title