Systems for multimodal real-time imaging for biopsies and related methods

Patent metadata

Field	Value
Publication number	US-11045169-B2
Application number	US-201715631672-A
Country	US
Kind code	B2
Filing date	Jun 23, 2017
Priority date	Jun 24, 2016
Publication date	Jun 29, 2021
Grant date	Jun 29, 2021

Abstract

A device comprises a cannula having a first end, a second end, and a channel between the first end and the second end; an imaging probe couplable to the first end of the cannula, where the imaging probe includes: a transducer, and a reflective surface; and a biopsy device coupled to the cannula, where the biopsy device is configured to collect a tissue sample from an organ of a patient.

First claim

What is claimed is:

1. A system comprising:
a device configured to be insertable into a patient, where the device includes:
a cannula having a first end region, a second end region, and a channel between the first end region and the second end region defining a longitudinal axis of the device,
an imaging probe configured to the first end region of the cannula and configured to capture an ultrasound return signal and photoacoustic signal, where the imaging probe includes:
a probe body including a first radial aperture and a second radial aperture circumferentially aligned with the first radial aperture,
a transducer within the probe body and axially aligned with the first radial aperture, and
a reflective surface within the probe body and axially aligned with the second radial aperture, wherein the reflective surface is coupled to a rail within the cannula and a position of the reflective surface along the rail is adjustable, and

a biopsy device coupled to and extending within the cannula, where the biopsy device is configured to collect a tissue sample from the patient;

a light transmission line extending from the second end region, through the cannula, and into the probe body;
a laser disposed proximate the second end region of the cannula and configured to emit a light signal through the light transmission line and through the second radial aperture using the reflective surface, wherein a direction of the light signal is adjustable based on the position of the reflective surface along the rail;
an ultrasound transmission line extending from the second end region, through the cannula, and into the probe body;
pulser disposed proximate the second end region of the cannula and configured to actuate the transducer via the ultrasound transmission line to emit an ultrasound signal through the first radial aperture;
a computer configured to:
generate an ultrasound image based on the ultrasound return signal received by the transducer in response to the ultrasound signal,
generate a photoacoustic image based on the photoacoustic signal received by the transducer in response to the light signal, and
overlay the ultrasound image and the photoacoustic image to construct an image of a location in the patient in real time, and
identify a tissue lesion based on the image; and

an actuator coupled to the device proximate the second end region of the cannula and configured to automatically move the device to align the biopsy device, based on the image, with the tissue lesion for collection of the tissue sample.

2. The system of claim 1 , where the actuator includes a rotary motor and a linear actuator.

3. The system of claim 1 , further comprising:
a fiber optic alignment stage configured to direct the light signal emitted by the laser through the light transmission line toward the reflective surface;
a receiver configured to receive a signal from the transducer via the ultrasound transmission line, wherein the signal comprises one or more of the ultrasound return signal and the photoacoustic signal;
an amplifier configured to amplify the signal; and
a data acquisition system configured to receive the amplified signal from the amplifier.

4. The system of claim 1 , further comprising a position control device configured to direct the actuator to move the device to the tissue lesion.

5. The system of claim 1 , wherein the first end region of the cannula is configured for insertion into the patient during imaging, and wherein each of the laser, the pulser, the computer, the actuator, and the second end region of the cannula is configured to be disposed externally of the patient during imaging.

6. The system of claim 1 , where the image provides a three-dimensional mapping of tissue and vasculature of the organ from inside the organ.

7. The system of claim 1 , wherein the computer is configured to store spatial coordinates related to the image and wherein the actuator is configured to align the biopsy device based further on the spatial coordinates.

8. The system of claim 2 , wherein the rotary motor is configured to rotate the biopsy device to align the biopsy device with the tissue lesion for collection of the tissue sample.

9. A system comprising:
a device configured to be insertable into a patient, where the device includes:
a cannula having a channel defining a longitudinal axis of the device, and
an imaging probe coupled to the cannula and configured to capture an ultrasound return signal and a photoacoustic signal, where the imaging probe includes:
a probe body including a first radial aperture and a second radial aperture circumferentially aligned with the first radial aperture;
a transducer within the probe body and axially aligned with the first radial aperture, and
a reflective surface within the probe body and axially aligned with the second radial aperture, wherein the reflective surface is coupled to a rail within the cannula and a position of the reflective surface along the rail is adjustable, and

a biopsy device coupled to and extending within the cannula, where the biopsy device is configured to collect a tissue sample from the patient;
a light transmission line extending through the cannula and into the probe body;
a laser configured to emit a light signal through the light transmission line and through the second radial aperture using the reflective surface, wherein a direction of the light signal is adjustable based on the position of the reflective surface along the rail;
an ultrasound transmission line extending through the cannula and into the probe body;
a pulser configured to actuate the transducer via the ultrasound transmission line to emit an ultrasound signal through the first radial aperture;
a computer configured to:
generate an ultrasound image based on the ultrasound return signal received by the transducer in response to the ultrasound signal,
generate a photoacoustic image based on the photoacoustic signal received by the transducer in response to the light signal,
overlay the ultrasound image and the photoacoustic image to construct an image of a location in the patient in real time, and
identify a tissue lesion based on the image; and

an actuator coupled to the device and configured to automatically move the device to align the biopsy device, based on the image, with the tissue lesion for collection of the tissue sample.

10. The system of claim 9 , where the actuator includes a rotary motor and a linear actuator.

11. The system of claim 9 , further comprising:
a fiber optic alignment stage configured to direct the light signal emitted by the laser through the light transmission line toward the reflective surface;
a receiver configured to receive a signal from the transducer via the ultrasound transmission line, wherein the signal comprises one or more of the ultrasound return signal and the photoacoustic signal;
an amplifier configured to amplify the signal; and
a data acquisition system configured to receive the amplified signal from the amplifier.

12. The system of claim 9 , further comprising a position control device configured to direct the actuator to move the device to the tissue lesion.

13. The system of claim 9 , wherein a first portion of the cannula is configured for insertion into the patient during imaging, and wherein each of the laser, the pulser, the computer, the actuator, and a second portion of the cannula is configured to be disposed externally of the patient during imaging.

14. The system of claim 9 , where the image provides a three-dimensional mapping of tissue and vasculature of the organ from inside the organ.

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Assignees

• Univ Arizona State
• Barkley Joel

Inventors

• Smith Barbara
• Barkley Joel
• Miranda Christopher

Classifications

• G02B23/2423 Primary

  of the distal end · CPC title

• H04N23/671

  in combination with active ranging signals, e.g. using light or sound signals emitted toward objects · CPC title

• A61B8/462

  characterised by constructional features of the display · CPC title

• A61B8/085

  for locating body or organic structures, e.g. tumours, calculi, blood vessels, nodules · CPC title

• A61B5/0035

  adapted for acquisition of images from more than one imaging mode, e.g. combining MRI and optical tomography · CPC title