Patents
US 12751766 B2: Compositions and methods for laser lithotripsy using nanoparticle fine-tuned NIR absorption
- Granted
- 2026-10-06
- Filed
- 2024-11-27 application 18962953
- Type
- Utility · 40 claims
- Elsewhere
- Google Patents ↗ · USPTO patent document ↗ · USPTO Patent Center record ↗
Abstract
Systems and methods for performing laser lithotripsy include introducing a lithotripsy medium containing nanoparticles into a body cavity comprising target obstructions and applying laser energy through the lithotripsy medium to disrupt the target obstructions. The nanoparticles may have diameters configured to enhance absorption efficiency of the laser energy. The nanoparticles may include organic polymers such as PEDOT: PSS or inorganic compounds such as indium tin oxide. Systems may include a laser source, a fluid delivery component configured to deliver the nanoparticle-containing lithotripsy medium, and an optical fiber for delivering laser energy. Methods of manufacturing lithotripsy media include selecting target wavelengths, synthesizing nanoparticles with corresponding absorption characteristics, and dispersing the nanoparticles at selected concentrations.
Source: PTBLXML, file of 2026-10-06 (ipgb20261006.xml).
Assignees
| Assignee | Type | Place | Also on furp.org | Source |
|---|---|---|---|---|
| Duke University 1,375 patents | US company or organization | Durham, NC | Duke University College or university EXACT high confidence: identical full name and state DUKE UNIVERSITY Nonprofit EXACT high confidence: identical full name and state | PTBLXML, file of 2026-10-06 |
| The University of Chicago 523 patents | US company or organization | Chicago, IL | University of Chicago College or university FUZZY medium confidence: same name (governing-board words and legal endings aside) and state UNIVERSITY OF CHICAGO Nonprofit FUZZY medium confidence: same name (governing-board words and legal endings aside) and state | PTBLXML, file of 2026-10-06 |
Inventors
| Inventor | Place | Patents | Person page | Source |
|---|---|---|---|---|
| Pei Zhong | Durham, NC | 3 | PTBLXML, file of 2026-10-06 | |
| Qingsong Fan | Chicago, IL | PTBLXML, file of 2026-10-06 | ||
| Po-Chun Hsu | Durham, NC | PTBLXML, file of 2026-10-06 | ||
| Christine Payne | Durham, NC | PTBLXML, file of 2026-10-06 | ||
| Michael Lipkin | Durham, NC | PTBLXML, file of 2026-10-06 |
CPC categories
| Subclass | Category | First group | Source |
|---|---|---|---|
| A61B | Diagnosis; surgery; identification | A61B18/245 | PTBLXML, file of 2026-10-06 |
| A61K | Preparations for medical, dental or toiletry purposes | A61K41/0028 | PTBLXML, file of 2026-10-06 |
Cooperative Patent Classification, as currently assigned (one row per subclass).
Assignments and security interests
No recorded assignments or security interests on file for this patent.
USPTO bulk data: PatentsView granted patents, disambiguated (PVGPATDIS) for patents, assignees, inventors, places and CPC categories; the USPTO Patent Assignment Dataset (ECORSEXC) for assignments and security interests. Patents filed in the last 20 years. No claims or full text. Links to other records are by name (and state): EXACT means the identical full name and state; FUZZY means a looser name match, with the confidence shown.