Metal-Chelated Thrombus Imaging Composition for Rapid Emergency Scans

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Solution Overview

Problem

Current methods for preparing radiopharmaceuticals with [18F]-fluorochemical techniques are inefficient, complex, and unsuitable for emergency use due to lengthy purification processes, limiting their application in thrombus imaging.

Innovation Solution

A radiopharmaceutical compound labeled with a metallic radioisotope through a convenient coupling between a chelator and a metallic isotope, allowing for high specific binding to glycoprotein IIb/IIIa and rapid use in thrombus imaging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If [18F]-fluorochemical techniques are used for radiopharmaceutical preparation, then clinical amounts can be produced, but the process becomes complicated and time-consuming requiring separate equipment and purification facilities

Engineering Contradiction:

Improveclinical amounts of radiopharmaceuticalVSAvoidprocess complexity and equipment requirements

Core Design Contradiction:

Quantity of substanceVSDevice complexity

Solution Approach 1:

The patent changes the radioactive isotope from F-18 to metallic radioisotopes (Ga-68, Cu-64, Tc-99m) that can be directly chelated to the glycoprotein IIb/IIIa antagonist without requiring complex nucleophilic substitution reactions. This parameter change in the radioactive label type simplifies the synthesis process while maintaining clinical production capability

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent introduces a chelator as an intermediary component that directly binds to metallic radioisotopes. This chelator-mediated approach replaces the complex F-18 labeling process with a simple chelation reaction, eliminating the need for specialized fluorination equipment and complex purification systems

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If F-18 radiolabeled compound is used for thrombus imaging, then high affinity and specific binding to glycoprotein IIb/IIIa can be achieved, but the imaging process takes about 4 hours due to quality control and purification procedures

Engineering Contradiction:

Improvespecific binding affinity to glycoprotein IIb/IIIaVSAvoidtime required for quality control and purification

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent extracts the time-consuming purification and quality control steps from the overall process by using metallic radioisotopes with simpler labeling chemistry. The direct chelation method produces sufficiently pure radiopharmaceutical without requiring extensive purification, reducing preparation time from 4 hours to minutes

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent performs preliminary action by pre-chelating the glycoprotein IIb/IIIa antagonist with the chelator in a stable form, which can then be rapidly labeled with metallic radioisotopes immediately before use. This pre-prepared intermediate eliminates the need for time-consuming quality control procedures

Inventive Principle:

Principle #10Preliminary action

3Quantity of substance

If conventional radiopharmaceutical preparation methods are used, then radiopharmaceutical can be produced, but the efficiency is low and the process is not suitable for emergency patients

Engineering Contradiction:

Improveradiopharmaceutical productionVSAvoidpreparation efficiency and emergency applicability

Core Design Contradiction:

Quantity of substanceVSProductivity

Solution Approach 1:

The patent uses metallic radioisotopes with shorter half-lives (e.g., Tc-99m with 6-hour half-life) that can be produced on-site or nearby and used immediately. This approach replaces the need for complex, time-intensive F-18 production facilities, enabling rapid preparation for emergency patients with significantly improved productivity

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

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 compound enables quick and non-invasive thrombus imaging using PET or SPECT techniques, applicable in emergency situations without the need for specialized facilities, improving medical care for thrombotic diseases.

Implementation Method 1

conveniently labeling glycoprotein IIb/IIIa using the coupling between a metallic radioisotope and a chelator

Methodology Applied

Scientific EffectChelation: Chemical Bonding

Implementation Method 2

high specific binding to glycoprotein IIb/IIIa

Methodology Applied

Scientific EffectSpecific binding: Absorption (physical)

Implementation Method 3

labeled with a metallic radioisotope... quick and non-invasive thrombus imaging using PET or SPECT techniques

Methodology Applied

Scientific EffectRadioactive decay: Radioactive Decay

Data Source

PatentUS12527886B2Radiopharmaceuticals and composition for thrombus imaging

Publication Date: 2026.01.20 THE ASAN FOUND

AI summary

A compound represented by the following Formula 1 or a pharmaceutically acceptable salt thereof:where R1 is a chelating agent labeled with a metallic radioisotope. A thrombus imaging composition including the compound or the pharmaceutically acceptable salt thereof labeled with a metallic radioisotope as an active ingredient.