Medical system and method for monitoring medical device insertion and illumination patterns

Patent metadata

Field	Value
Publication number	US-12426956-B2
Application number	US-202217696675-A
Country	US
Kind code	B2
Filing date	Mar 16, 2022
Priority date	Mar 16, 2022
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

Disclosed herein are medical systems and devices that include an elongate probe configured for insertion into a patient, where a multi-core optical fiber extends along the elongate probe. The optical fiber can include sensing core fibers that extend distally along the probe. The optical fiber can further include illumining core fibers to facilitate projection of light away from the distal end in various illumination patterns. The system includes a console having processors and logic stored in memory. The logic can facilitate singly projecting the illumination light in the various patterns. The logic can also extract an image from returning light and compare wavelengths between the illuminating light and the returning light to determine a motion of body elements.

First claim

What is claimed is:

1. A medical device system comprising:
a medical device defining an elongate probe configured for insertion into a patient body, the elongate probe comprising:
an optical fiber extending along the elongate probe, the optical fiber including a plurality of illuminating core fibers; and
an optical member disposed at a distal end of the elongate probe, the optical member configured to receive illuminating light from the plurality of illuminating core fibers and project the illuminating light distally away from the distal end; and

a console coupled with the medical device at a proximal end thereof, the console including one or more processors and a non-transitory computer-readable medium having stored thereon logic that, when executed by the one or more processors, causes operations including selectively providing the illuminating light individually to pre-defined subsets of the plurality of illuminating core fibers, the pre-defined subsets including a dispersing subset, a focusing subset, and a steering subset, to cause the illuminating light to singly project away from the optical member in each one of a plurality of illuminating patterns, including:
a dispersed pattern, wherein the illuminating light is projected:
distally away from the optical member,
radially outward from the optical member across a 360-degree angle of rotation;
a focused pattern, wherein the illuminating light is projected radially inward toward a focal point; and
a steering pattern, wherein the illuminating light is projected radially away from the elongate probe in a single direction that includes:
a fixed angle with respect to a longitudinal axis of the elongate probe, and
a fixed rotational angle about the longitudinal axis,

wherein the dispersing subset, the focusing subset, and the steering subset each include distinctly different illuminating core fibers of the plurality of illuminating core fibers.

2. The system of claim 1 , wherein the optical member is translucent or transparent.

3. The system of claim 1 , wherein:
the plurality of illuminating core fibers define a plurality light beams of the illuminating light that project distally away from the plurality of illuminating core fibers,
the optical member includes a plurality of optical pathways corresponding to the plurality of light beams,
each light beam is aligned with a corresponding optical pathway, and
each optical pathway includes a number of at least one of refracting or reflecting elements configured to alter a direction of a corresponding light beam.

4. The system of claim 3 , wherein:
a dispersing subset of the plurality of light beams emanating from the dispersing subset of the plurality of illuminating core fibers is aligned with a dispersing subset of the plurality of optical pathways, and
the dispersing subset of the plurality of optical pathways is configured to project the dispersing subset of the plurality of light beams distally and radially away from the distal end of the elongate probe.

5. The system of claim 3 , wherein:
a focusing subset of the plurality of light beams emanating from the focusing subset of the plurality of illuminating core fibers is aligned with a focusing subset of the plurality of optical pathways, and
the focusing subset of the plurality of optical pathways is configured to project the focusing subset of the plurality of light beams radially inward toward a focal point.

6. The system of claim 3 , wherein:
a steering subset of the plurality of light beams emanating from the steering subset of the plurality of illuminating core fibers is aligned with a steering subset of the plurality of optical pathways, and
the steering subset of the plurality of optical pathways is configured to project the steering subset of the plurality of light beams in the steering pattern.

7. The system of claim 1 , wherein the optical fiber includes a number of returning core fibers configured to:
receive returning light at the distal end of the elongate probe through the optical member, and
propagate the returning light proximally along the optical fiber to the console.

8. The system of claim 7 , wherein the operations further include:
extracting an image of the patient body from the returning light; and
causing the image to be portrayed on a display of the system.

9. The system of claim 7 , wherein the operations further include:
comparing a wavelength of the returning light with a wavelength of the illuminating light; and
as a result of the comparing, determining a motion of a patient body element.

10. The system of claim 1 , wherein:
the optical fiber further includes a number of sensing core fibers extending along the optical fiber, each sensing core fiber including a plurality of reflective gratings distributed along a longitudinal length of sensing core fiber and each reflective grating being configured to (i) reflect a light signal of a different spectral width based on received incident light at proximal end, and (ii) change a characteristic of the reflected light signal based on a condition experienced by the optical fiber, and
the operations further include determining a physical state of the elongate probe during insertion of the elongate probe within the patient body, wherein determining includes:
providing an incident light signal to the number of sensing core fibers;
receiving reflected light signals of different spectral widths of the incident light singal by one or more of the plurality of reflective gratings; and
processing the reflected light signals associated with the number of sensing core fibers to determine the physical state.

11. The system of claim 10 , wherein:
the condition experienced by the optical fiber is a strain, and
the physical state is a live three-dimensional shape.

12. A method for monitoring placement of a medical device within a patient body, the method comprising:
illuminating an interior portion of the patient body by a medical device system comprising:
the medical device defining an elongate probe configured for insertion into the patient body, the elongate probe comprising:
an optical fiber extending along the elongate probe, the optical fiber including a plurality of illuminating core fibers;
an optical member disposed at a distal end of the elongate probe, the optical member configured to:
receive an illuminating light from the plurality of illuminating core fibers,
project the illuminating light distally away from the distal end in a plurality of illuminating patterns; and

a console coupled with the medical device at a proximal end thereof, the console including:
a light source configured to provide the illuminating light to the plurality of illuminating core fibers;
one or more processors; and
a non-transitory computer-readable medium having stored thereon logic that, when executed by the one or more processors, causes operations of the medical device system, that include selectively and singly:
propagating the illuminating light along a dispersing subset of the plurality of illuminating core fibers to project the illuminating light radially outward from the distal end in a dispersed pattern;
propagating the illuminating light along a focusing subset of the plurality of illuminating core fibers to project the illuminating light radially inward toward a focal point; and
propagating the illuminating light along a steering subset of the plurality of illuminating core fibers to project the illuminating light in a steering pattern, wherein the steering pattern includes projecting the illuminating light radially away from the distal end in a single direction that includes:
 a fixed angle with

Assignees

• Bard Access Systems Inc

Inventors

• Sowards Steffan
• Misener Anthony K
• Mclaughlin William Robert

Classifications

• A61B2034/2055

  Optical tracking systems · CPC title

• G02B6/0008

  the light being emitted at the end of the fibre · CPC title

• G02B6/02042

  Multicore optical fibres · CPC title

• A61B2090/306

  using optical fibres · CPC title

• A61B2034/2061

  using shape-sensors, e.g. fiber shape sensors with Bragg gratings · CPC title