Systems, methods and devices for removal of thrombus and/or soft plaque

Patent metadata

Field	Value
Publication number	US-10765446-B2
Application number	US-201815865346-A
Country	US
Kind code	B2
Filing date	Jan 9, 2018
Priority date	Feb 20, 2017
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

A thrombectomy system is provided that, in various embodiments, a rotating impeller that may be translated within limits along a guidewire and within a catheter. The rotating impeller is, during operation, either located entirely outside of the distal end of the catheter's lumen or at least partially outside of the distal end of the catheter's lumen, whereby rotation is prevented if the impeller is completely within the catheter's lumen.

First claim

What is claimed is:

1. A thrombus disruption and removal system comprising:
a catheter comprising a body defining a proximal end, a distal end and a lumen therebetween;
a tubular shaft defining a proximal end, a distal end, an impeller attached near the distal end of the tubular shaft and configured to draw soft plaque and/or thrombus proximally toward the lumen of the catheter after disruption, and a guidewire lumen defined through the tubular shaft and the impeller;
a prime mover coupled to the proximal end of the tubular shaft and adapted to rotate the impeller and to translate the impeller relative to the distal end of the catheter body;
a controller in operational communication with the prime mover and adapted to determine the translational position of the impeller, whereby the controller prevents rotation of the prime mover and the impeller if the impeller is not at least partially outside the lumen of the catheter and extending distally away from the distal end of the catheter body.

2. The system of claim 1 , wherein the impeller further comprises an elongated screw structure.

3. The system of claim 1 , wherein the impeller further comprises a helical structure.

4. The system of claim 1 , wherein the impeller may be translated proximally or distally over a guide wire within an established distance limit.

5. A thrombus disruption and removal system comprising:
a catheter comprising a body defining a proximal end, a distal end and a lumen therebetween;
a tubular shaft defining a proximal end, a distal end, an impeller attached near the distal end of the tubular shaft, the impeller comprising an elongated screw structure, and a guidewire lumen defined through the tubular shaft and the impeller;
a prime mover coupled to the proximal end of the tubular shaft and adapted to rotate the impeller and to translate the impeller relative to the distal end of the catheter body;
a controller in operational communication with the prime mover and adapted to determine the translational position of the impeller, whereby the controller prevents rotation of the prime mover and the impeller if the impeller is not at least partially outside the lumen of the catheter and extending distally away from the distal end of the catheter body.

Assignees

• Cardivascular Systems

Inventors

• Higgins Joseph P
• Rydberg Nicholas W

Classifications

• A61B2017/22038

  with a guide wire · CPC title

• A61B2017/22079

  with suction of debris · CPC title

• A61B2017/00685

  Archimedes screw · CPC title

• A61B2217/005

  with suction drainage system · CPC title

• A61B2017/00075

  Motion · CPC title