Catheter based retrieval device with proximal body having axial freedom of movement

• US 10,172,634 B1
• Filed: 04/13/2018
• Issued: 01/08/2019
• Est. Priority Date: 10/16/2017
• Status: Active Grant

• Current Assignee: Retriever Medical, Inc.
• Original Assignee: Michael Bruce Horowitz
• Inventors: Horowitz, Michael Bruce
• Primary Examiner(s): Louis, Richard
• Application Number:
  US15/953,151
• Time in Patent Office: 270 Days
• CPC Class Codes: A61B 17/22032 having inflatable gripping elements balloon catheters A61M25/10
• CPC Class Codes: A61B 17/221 Gripping devices in the form of loops or baskets for gripping calculi or similar types of obstructions surgical snare instruments A61B17/32056
• CPC Class Codes: A61B 2017/00867 shape memory effect
• CPC Class Codes: A61B 2017/22034 for gripping the obstruction or the tissue part from inside
• CPC Class Codes: A61B 2017/22038 with a guide wire
• CPC Class Codes: A61B 2017/22051 with an inflatable part, e.g. balloon, for positioning, blocking, or immobilisation A61B2017/22048, A61B2017/3486 take precedence
• CPC Class Codes: A61B 2017/22054 with two balloons
• CPC Class Codes: A61B 2017/22072 with an instrument channel, e.g. for replacing one instrument by the other
• CPC Class Codes: A61B 2017/22079 with suction of debris
• CPC Class Codes: A61B 2017/22094 for crossing total occlusions, i.e. piercing
• CPC Class Codes: A61M 2025/1013 with concentrically mounted balloons, e.g. being independently inflatable
• CPC Class Codes: A61M 2025/1015 having two or more independently movable balloons where the distance between the balloons can be adjusted, e.g. two balloon catheters concentric to each other forming an adjustable multiple balloon catheter system

Abstract

Provided herein are methods and systems for the removal of anatomical occlusions, and an occlusion removal device comprising a first body adapted to be mounted to a delivery wire and releasably engaged to the delivery wire, wherein while engaged the first body remains fixed on the delivery wire and upon release moves axially along the delivery wire, and a second body adapted to be mounted to the delivery wire. A first proximal body may be oriented proximally to a second distal body. The proximal body and the distal body may be adapted to expand upon exiting a delivery catheter. The proximal body may be releasably engaged by a mechanically breakable connection or an electrolytically or heat disconnectable connection, the electrolytically disconnectable connection being broken upon an application of electric current to the electrolytically disconnectable connection.

Claims

1. An occlusion removal device comprising:

a. a first body adapted to be mounted to a delivery wire and releasably engaged to the delivery wire, wherein while engaged the first body remains fixed on the delivery wire and upon release the first body is movable axially along the delivery wire; and

b. a second body adapted to be mounted to the delivery wire,

wherein the first body is releasably engaged to the delivery wire by a electrolytically disconnectable connection, the electrolytically disconnectable connection being broken upon an application of electric current to the electrolytically disconnectable connection.

2. The device of claim 1, wherein the first body is oriented proximally to the second body.

3. The device of claim 2, wherein the first body is a proximal body and the second body is a distal body.

4. The device of claim 3 wherein the proximal body and the distal body are expandable.

5. The device of claim 4 wherein the proximal body and the distal body are made of nitinol.

6. The device of claim 5 wherein the proximal body and the distal body are mesh.

7. The device of claim 4 wherein the proximal body and the distal body are adapted to expand upon exiting a delivery catheter.

8. The device of claim 7 wherein the proximal body is movable axially along the delivery wire by contact with the delivery catheter.

9. An occlusion removal device comprising:

a. a first body adapted to be mounted to a delivery wire and releasably engaged to the delivery wire, wherein while engaged the first body remains fixed on the delivery wire and upon release is movable axially along the delivery wire; and

b. a second body adapted to be mounted to the delivery wire,

wherein the first body is releasably engaged to the delivery wire by a mechanical connection.

10. The device of claim 9 wherein the mechanical connection is a tether adapted to break upon application of a pulling force.

11. The device of claim 9, wherein the first body is oriented proximally to the second body.

12. The device of claim 11, wherein the first body is a proximal body and the second body is a distal body.

13. The device of claim 12 wherein the proximal body and the distal body are expandable.

14. The device of claim 13 wherein the proximal body and the distal body are adapted to expand upon exiting a delivery catheter.

15. The device of claim 14 wherein the proximal body is movable axially along the delivery wire by contact with the delivery catheter.

16. The device of claim 13 wherein the proximal body and the distal body are made of nitinol.

17. The device of claim 16 wherein the proximal body and the distal body are mesh.