Granted Patent B2

US 12,262,872 · App. 17/276,500 · Granted Apr 1, 2025

Inventors: Christopher L. Petersen (Carlisle, MA); Christopher C. Petroff (Groton, MA); Giovanni J. Ughi (Arlington, IT); Nareak Douk (Lowell, MA); R. Maxwell Flaherty (Topsfield, MA); J. Christopher Flaherty (Auburndale, FL)

Assignee: GENTUITY, LLC

A61B1/042A61B1/00025A61B1/00057A61B1/00082H04N23/51H04N23/555

Abstract

Claims (34)

1. An imaging system for a patient comprising:

an imaging probe, comprising:

an elongate shaft comprising a proximal end, a distal portion, and a lumen extending between the proximal end and the distal portion;

a rotatable optical core comprising a proximal end and a distal end, wherein at least a portion of the rotatable optical core is positioned within the lumen of the elongate shaft; and

an optical assembly positioned proximate the distal end of the rotatable optical core, the optical assembly configured to direct light to tissue and collect reflected light from the tissue; and

a console constructed and arranged to operably attach to the imaging probe, the console comprising an imaging assembly constructed and arranged to optically couple to the imaging probe, wherein the imaging assembly is configured to emit light into the imaging probe and receive the reflected light collected by the optical assembly,

wherein the reflected light comprises a back-reflection from an interface between the rotatable optical core and the optical assembly,

wherein the optical assembly is configured to produce an identifiable back reflection,

wherein the imaging assembly is configured to detect the identifiable back reflection without requiring the rotatable optical core to rotate,

wherein a change in the identifiable back reflection correlates to an undesired state of the rotatable optical core,

wherein the undesired state comprises a break in the rotatable optical core,

wherein the console is configured to determine a distance between the identifiable back reflection and a center of a calibration image formed by the directed light,

wherein the console is calibrated based on the determined distance.

2. The system according to claim 1 , wherein the optical assembly comprises a GRIN lens.

3. The system according to claim 1 , wherein the identifiable back reflection comprises at least one back-reflection.

4. The system according to claim 1 , wherein the change in the identifiable back reflection comprises a loss of the identifiable back reflection.

5. The system according to claim 1 , wherein the system is configured to enter an alert mode if the undesired state of the rotatable optical core is detected.

6. The system according to claim 1 , wherein the imaging assembly is configured to detect the identifiable back reflection when the imaging probe is being advanced within the patient.

7. A method of calibrating an imaging system comprising:

emitting light from an imaging assembly to an attached imaging probe, the imaging probe comprising:

a rotatable optical core comprising a proximal end and a distal end; and

an optical assembly positioned proximate the distal end of the rotatable optical core, the optical assembly configured to direct light to tissue and collect reflected light from the tissue;

receiving light from the imaging probe with the imaging assembly, wherein the received light includes light from a back-reflection at an interface of the rotatable optical core and the optical assembly;

wherein the optical assembly is configured to produce an identifiable back reflection,

wherein the imaging assembly is configured to detect the identifiable back reflection,

wherein a change in the identifiable back reflection correlates to an undesired state of the rotatable optical core, and

wherein the undesired state comprises a break in the rotatable optical core,

and wherein the method further comprises:

determining a distance between the identifiable back reflection and a center of a calibration image formed by the received light; and

calibrating the console based on the determined distance.

8. The method according to claim 7 , wherein the rotatable optical core is not rotated during the calibration.

9. The method according to claim 7 , wherein the calibration comprises adjusting a length of a reference path.

10. The method according to claim 9 , wherein the imaging assembly comprises a delay line.

11. The method according to claim 10 , wherein the delay line comprises a step size of no more than 15 μm.

Assignments (1)

Continuity (4)

References Cited (400)

Cited By (1)

US 12,669,911