Granted Patent B2

US 12,239,412 · App. 17/603,689 · Granted Mar 4, 2025

Inventors: Christopher C. Petroff (Groton, MA); Christopher L. Petersen (Carlisle, MA); David W. Kolstad (Carlisle, MA); Giovanni J. Ughi (Arlington, MA); Lindsy M. Peterson (Woburn, MA); Benjamin Duncan (Watertown, MA); R. Maxwell Flaherty (Topsfield, MA); J. Christopher Flaherty (Nottingham, NH)

Assignee: Spryte Medical, Inc.

A61B5/0066A61B5/0044A61B5/0084A61B90/37A61B2090/3735A61B2090/376

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 the imaging system further comprising:

a console comprising a light source having a coherence length greater than 10 mm; and

an imaging assembly constructed and arranged to optically communicate with the imaging probe, the imaging assembly configured to emit light into the imaging probe and receive the reflected light collected by the optical assembly;

wherein the imaging probe further comprises a scan range of no less

than 6 mm, and wherein at least the distal portion of the elongate shaft comprises an outer diameter of no more than 0.034″.

2. The system according to claim 1 , wherein the outer diameter of at least the distal portion of the elongate shaft comprises an outer diameter of no more than 0.030″.

3. The system according to claim 2 , wherein the outer diameter of at least the distal portion of the elongate shaft comprises an outer diameter of no more than 0.025″.

4. The system according to claim 3 , wherein the outer diameter of at least the distal portion of the elongate shaft comprises an outer diameter of no more than 0.020″.

5. The system according to 4 , wherein the outer diameter of at least the distal portion of the elongate shaft comprises an outer diameter of no more than 0.016″.

6. The system according to claim 1 , further configured to perform a pre-treatment imaging procedure of a lesion comprising a diameter of less than 0.080″.

7. The system according to claim 6 , wherein the pre-treatment imaging procedure comprises a pullback procedure comprising pullback distance of at least 7.5 cm.

8. The system according to claim 7 , wherein the pullback distance is at least 10 cm.

9. The system according to claim 8 , wherein the pullback distance is at least 15 cm.

10. The system according to claim 7 , wherein the pullback procedure is configured to be performed at a rate of at least 25 mm/sec.

11. The system according to claim 7 , wherein the pullback procedure is configured to be performed within a time period of no more than 4 seconds.

12. The system according to claim 6 , wherein the lesion comprises a stenosis, and wherein the distal portion of the imaging probe is configured to be inserted through the stenosis.

13. The system according to claim 1 , further comprising a guidewire, and wherein the guidewire comprises a diameter of 0.014″.

14. The system according to claim 13 , wherein the guidewire And the imaging probe comprise a combined diameter of less than 0.044″.

15. The system according to claim 1 , wherein the scan range is no less than 7 mm.

16. The system according to claim 1 , wherein the scan range is no less than 11 mm.

17. The system according to claim 1 , wherein the imaging probe further comprises a dampening fluid positioned between the elongate shaft and the rotatable optical core, and wherein the dampening fluid is configured to reduce non-uniform rotation of the optical assembly.

18. The system according to claim 17 , wherein the imaging probe further comprises a fluid pressurization element configured to increase the pressure of the damping fluid to reduce a presence of bubbles proximate the optical assembly.

19. The system according to claim 1 , wherein the system is configured to provide treatment information, and wherein the treatment information is used by an operator to at least one of plan a treatment or predict a treatment outcome.

20. The system according to claim 19 , wherein the treatment information is based on OCT data gathered by the imaging probe.

21. The system according to claim 20 , further comprising a second imaging device configured to gather non-OCT data, and wherein the treatment information is further based on the non-OCT data.

22. The system according to claim 21 , wherein the second imaging device is configured to gather non-OCT data comprising angiography data.

23. The system according to claim 1 , wherein the system is configured to produce an assessment of disease severity.

24. The system according to claim 23 , wherein the assessment comprises at least one of a quantified assessment plan or a qualitative assessment.

25. The system according to claim 1 , wherein the system is configured to accurately capture a clot comprising a wavelength of 5 μm or more, 10 μm or more, or 30 μm or more.

Assignments (2)

Continuity (4)

References Cited (400)

Cited By (3)

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