CLOT REMOVAL DEVICE

• US 20140371769A1
• Filed: 03/11/2014
• Published: 12/18/2014
• Est. Priority Date: 03/13/2013
• Status: Active Grant

• Current Assignee: Neuravi Limited (Johnson & Johnson)
• Original Assignee: Neuravi Limited (Johnson & Johnson)
• Inventors: VALE, David, BRADY, Eamon, GILVARRY, Michael, CASEY, Brendan
• Granted Patent: US 9,642,635 B2
• Time in Patent Office: Days
• US Class Current: 606/159
• CPC Class Codes: A61B 17/22031 Gripping instruments, e.g. forceps, for removing or smashing calculi A61B17/221 takes precedence
• 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 2017/00309 Cut-outs or slits
• CPC Class Codes: A61B 2017/00336 with a protective sleeve, e.g. retractable or slidable
• CPC Class Codes: A61B 2017/00853 low friction, hydrophobic and corrosion-resistant fluorocarbon resin coating (ptf, ptfe, polytetrafluoroethylene)
• CPC Class Codes: A61B 2017/00858 high friction, non-slip on handles A61B2017/00429
• CPC Class Codes: A61B 2017/22001 Angioplasty, e.g. PCTA
• CPC Class Codes: A61B 2017/2215 having an open distal end
• CPC Class Codes: A61B 2090/08021 of the patient or his organs

Abstract

A system may comprise a clot engagement element having a collapsed delivery configuration and an expanded configuration for engaging with a clot and for dislodging the clot from a first vessel segment. An elongate member may be configured to apply a pull force to the clot engaging element to dislodge the clot from the first vessel segment. A clot removal catheter may include a lumen at its distal end sized to receive the clot and configured to maintain a stable position in a second blood vessel segment proximal of and larger in diameter than the first blood vessel segment. A distal end of the elongate member may be configured to protect a third blood vessel segment between the first and second blood vessel segments from tractive forces transmitted by the elongate member during clot dislodgement from the first vessel segment.

Claims

1. A system for dislodging an occlusive clot from a first blood vessel segment the system comprising:

a clot retrieval device and a clot removal catheter;

the clot retrieval device comprising a clot engaging element and an elongate member;

the clot engagement element having a collapsed delivery configuration and an expanded configuration for engaging with the clot and for dislodging the clot from the first vessel segment;

the elongate member configured to apply a pull force to the clot engaging element to dislodge the clot from the first vessel segment;

the clot removal catheter comprising a lumen at its distal end sized to receive said clot and configured to maintain a stable position in a second blood vessel segment, said second blood vessel segment being proximal of and larger in diameter than said first blood vessel segment;

a third blood vessel segment between said first and second blood vessel segments;

the distal end of the elongate member configured to protect the third blood vessel segment from tractive forces transmitted by the elongate member during clot dislodgement from the first vessel segment.

2-51. -51. (canceled)