Granted Patent B1

US 12,201,702 · App. 16/598,482 · Granted Jan 21, 2025

Inventors: Dmitri O. Lapotko (Dana Point, CA); Katsiaryna Hleb (Irvine, CA)

Assignee: Masimo Corporation

A61K49/223A61B5/0095A61K49/221

Abstract

Claims (28)

1. A system configured to be used in resection of cancer cells or microtumors, said system comprising:

a plasmonic nanobubbles (“PNB”) probe configured to be coupled to a source of electromagnetic radiation to irradiate a first location of a tissue of a patient that includes bioconjugated nanoparticles at a first energy level to produce PNBs in said tissue, wherein the source is further configured to, when needed, provide the PNB probe with increasing levels of radiation pulses than the first energy level to reach increasing depths of the tissue;

a detector configured to output a response signal responsive to pressure pulses emitted by said PNBs from at least some of the bioconjugated nanoparticles when said tissue includes said cancer cells or microtumors; and

a control system including a signal processor operably communicating with said detector and configured to process information responsive to said response signal to generate an output to a clinician,

wherein, in response to the output indicating presence of a PNB, the control system is configured to instruct resection of a portion of said tissue at the first location defined by a footprint of the PNB probe, and

in response to the output indicating absence of a PNB, the control system is further configured to compare a time response of the response signal with a threshold and output a final instruction based on said comparison.

2. The system of claim 1 , further comprising a robotic surgical arm configured to position or house said PNB probe.

3. The system of Claim 1 , wherein the final instruction is to resect more of said portion even when said processing the information does not indicate a presence of said PNBs.

4. The system of Claim 1 , wherein the final instruction further includes directing a clinician to probe deeper into said portion of said tissue by irradiating the tissue at the first location at a higher energy level than the first energy level.

5. The system of claim 1 , wherein, in response to the output indicating presence of a PNB, the control system is further configured to instruct irradiation of the first location at the first energy level after the resection.

6. The system of claim 1 , further comprising a laparoscopic tool or an endoscope configured to position or house said PNB probe.

7. The system of claim 1 , wherein the final instruction further includes directing a clinician to relocate said PNB probe to a different portion of said tissue.

8. A process that guides a surgeon in resection of cancer cells or microtumors, said process comprising:

irradiating, with a plasmonic nanobubbles (“PNB”) probe having a source of electromagnetic radiation, a first location of a tissue of a patient that includes bioconjugated nanoparticles at a first energy level to produce PNBs in said tissue, wherein the source is further configured to, when needed, provide the PNB probe with increasing levels of radiation pulses than the first energy level to reach increasing depths of the tissue;

outputting from a detector a response signal responsive to pressure pulses emitted by said PNBs from at least some of the bioconjugated nanoparticles when said tissue includes said cancer cells or microtumors;

processing with a digital signal processor information responsive to said response signal to generate an output to a clinician; and

in response to the output indicating presence of a PNB, instructing resection of a portion of said tissue at the first location defined by a footprint of the PNB probe, and

in response to the output indicating absence of a PNB, comparing a time response of the response signal with a threshold and outputting a final instruction based on the comparison.

9. The process of claim 8 , wherein said irradiating, outputting, processing, and generating repeats with each resection of said portion of said tissue.

10. The process of claim 8 , wherein the final instruction is to resect more of said portion even when said processing does not indicate a presence of said PNBs.

11. The process of claim 8 , wherein the final instruction further includes directing said surgeon to probe deeper into said portion of said tissue by irradiating the tissue at the first location at a higher energy level than the first energy level.

12. The process of claim 11 , wherein said irradiating at the higher energy level comprises pulsing said source at a laser pulse fluence of between 10 mJ/cm 2 and 120 mJ/cm 2 .

13. The process of claim 12 , wherein said pulsing said source at said laser pulse fluence comprises pulsing said source at about 60 mJ/cm 2 .

14. The process of claim 8 , wherein said irradiating comprises pulsing said source for a duration not exceeding about 100 ps.

15. The process of claim 8 , wherein said irradiating comprises pulsing said source for a duration of about 30 ps.

16. The process of claim 8 , further comprising, in response to the output indicating presence of a PNB, using the PNB probe to iteratively irradiate the first location of the tissue at the first energy level until the output indicates absence of a PNB.

17. The process of claim 8 , wherein instructing resection of the portion of said tissue at the first location defined by the footprint of the PNB probe comprises sending a command to a robotic surgical arm to perform the resection.

18. The process of claim 8 , wherein the final instruction further includes directing a clinician to relocate said PNB probe to a different portion of said tissue.

Assignments (1)

Continuity (4)

References Cited (400)

Cited By (1)

US 12,620,468