Magnetic resonance imaging compatible catheter

Patent metadata

Field	Value
Publication number	US-10173028-B2
Application number	US-201414484461-A
Country	US
Kind code	B2
Filing date	Sep 12, 2014
Priority date	Dec 2, 2010
Publication date	Jan 8, 2019
Grant date	Jan 8, 2019

Abstract

A method, consisting of passing a cylindrical carbon fiber through a press so as to produce a flat ribbon. The method further includes weaving multiple strands of the flat ribbon together to create a cylindrical braid.

First claim

The invention claimed is:

1. A magnetic resonance imaging-compatible catheter, which has proximal and distal ends and comprises:
a flexible cylindrical braid woven from multiple strands of a flat carbon ribbon, wherein the braid consists of the strands of flat carbon ribbon, one or more force sensors and one or more ultrasonic position sensors;
a flexible biocompatible sheath that is formed over the braid; and

wherein the one or more force sensors and the one or more ultrasonic position sensors are woven within the braid between the proximal and the distal end of the catheter.

2. The magnetic resonance imaging-compatible catheter according to claim 1 , wherein the catheter consists of only nonmagnetic materials.

3. The magnetic resonance imaging-compatible catheter according to claim 1 , wherein the flat carbon ribbon has dimensional specifications defining a rectangle having a width no greater than 500 μm, and a thickness no greater than 500 μm.

4. A magnetic resonance imagine-compatible catheter, which has proximal and distal ends and comprises:
a flexible cylindrical braid woven from multiple strands of a flat carbon ribbon wherein the braid consists of the strands of flat carbon ribbon, one or more force sensors made of a platinum/iridium alloy and one or more ultrasonic position sensors made of a platinum/iridium alloy;
a flexible biocompatible sheath that is formed over the braid; and

wherein the one or more force sensors and the one or more ultrasonic position sensors are woven within the braid between the proximal and the distal end of the catheter,
wherein, and
wherein the catheter consists of only nonmagnetic materials.

Assignees

• Biosense Webster Israel Ltd

Inventors

• Govari Assaf
• Beeckler Christopher Thomas
• Papaioannou Athanassios
• Garcia Ariel

Classifications

• A61B5/0422

  Human Necessities · mapped topic

• A61M2205/332

  Force measuring means · CPC title

• A61M2207/10

  Device therefor · CPC title

• A61B5/6852

  Catheters · CPC title

• G01R33/287

  involving active visualization of interventional instruments, e.g. using active tracking RF coils or coils for intentionally creating magnetic field inhomogeneities · CPC title