Anaesthetic Formulation Using Carbon Quantum Dots for Sustained Pain Relief

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Solution Overview

Problem

Existing local anesthetic agents lack improvements in pharmacokinetic and pharmacodynamic properties, leading to a need for longer-lasting pain relief without the risks associated with opioid treatments.

Innovation Solution

A pharmaceutical composition comprising anesthetic agents like ropivacaine, bupivacaine, and carbon quantum dots, along with alkanolamines, provides a long-lasting anesthetic effect through increased water solubility and slow-release mechanisms.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Duration of action of moving object

If conventional local anesthetic agents are used, then pain relief is achieved, but the duration of action is insufficient and opioid treatments are required

Engineering Contradiction:
Improveduration of pain reliefVSAvoidrisks from opioid treatment
Core Design Contradiction:
Duration of action of moving objectVSObject-generated harmful factors

Solution Approach 1:

The patent modifies the pharmacokinetic parameters of local anesthetic agents by combining them with carbon quantum dots and alkanolamines. This formulation changes the release rate and duration of action, extending pain relief from conventional short duration to prolonged duration (at least 1 hour, preferably 2-12 hours), thereby eliminating the need for opioid rescue medications and their associated risks

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention creates a composite pharmaceutical formulation combining local anesthetic agents with carbon quantum dots and alkanolamines. This composite structure enables sustained release and prolonged duration of action through the synergistic effects of the components, achieving long-lasting pain relief without requiring additional opioid interventions

Inventive Principle:
Principle #40Composite materials

2Reliability

If local anesthetic agents are used for surgical anesthesia, then pain relief is provided, but the pharmacokinetic properties can be improved

Engineering Contradiction:
Improvepharmacokinetic propertiesVSAvoidduration of anesthetic effect
Core Design Contradiction:
ReliabilityVSDuration of action of moving object

Solution Approach 1:

Carbon quantum dots serve as an intermediary carrier that facilitates sustained release of local anesthetic agents. The quantum dots interact with the anesthetic molecules and control their release kinetics, improving pharmacokinetic properties by extending the duration of action while maintaining reliable and predictable drug delivery profiles

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The formulation ensures continuous and sustained action of the local anesthetic agent through the carbon quantum dot-alcanolamine complex. This continuous release mechanism maintains reliable pharmacokinetic properties over an extended period, preventing the need for repeated dosing or adjunctive opioid treatments

Inventive Principle:
Principle #20Continuity of useful action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

The composition offers prolonged pain relief, reducing the need for opioid treatments and minimizing associated complications, suitable for various administration routes including topical and injection methods.

Implementation Method 1

Carbon quantum dots are a class of nanomaterials that have attracted attention because of their low toxicity, water solubility and fluorescence

Methodology Applied
Scientific EffectWater solubility: Solvation

Implementation Method 2

They have the similar mechanism of action in which they cause a reversible inhibition of sodium ion influx, which blocks impulse conduction in nerve fibers

Methodology Applied
Scientific EffectSodium ion blockage: Ion Repulsion/Attraction

Data Source

PatentUS20250381173A1Long-Lasting Anaesthetic Formulation
Publication Date: 2025.12.18 BERTIE INTERNATIONAL AB
  • US20250381173A1 patent drawing
  • US20250381173A1 patent drawing
  • US20250381173A1 patent drawing

AI summary

The present invention is within the technical field of pain-relief and relates to a pharmaceutical composition comprising at least one anesthetic agent selected from the group consisting of ropivacaine, bupivacaine, etidocaine, levobupivacaine, lidocaine, lignocaine, mepivacaine, articaine, dibucaine, levobupivacaine, prilocaine, benzocaine, chloroprocaine, cocaine, procaine, proparacaine, tetracaine and any pharmaceutically acceptable salt, hydrate, solvate or prodrug thereof; at least one alkanolamine selected from the group consisting of triethanolamine, tripropanolamine and trimethanolamine; water; and optionally a pharmaceutically acceptable diluent, carrier and/or excipient. The present disclosure furthermore relates to the use of the composition for providing pain-relief, a method of treatment, a method of producing said pharmaceutical composition as well as a carbon quantum dot formed from components of the pharmaceutical composition.