Noninvasive Meconium Detection in Amniotic Fluid
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Solution Overview
Problem
Current methods for detecting meconium in amniotic fluid are invasive, require professional personnel, and cannot be accurately performed by laypeople at home, especially in cases of bloody or lightly stained fluid, limiting early identification of fetal distress and potential severity.
Innovation Solution
A system comprising a collection body, such as a hygienic pad, with integrated or external meconium detectors using immunoassay strips to detect carcino-embryonic antigen (CEA) levels, allowing for non-invasive, sensitive, and specific detection of meconium in amniotic fluid, even when mixed with other substances, and enabling differentiation between thick and thin meconium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If invasive methods (amniocentesis, amnioscopy) are used to detect meconium, then detection accuracy is improved, but procedure complexity and risk increase
Solution Approach 1:
The patent replaces mechanical invasive procedures (amniocentesis, amnioscopy) with a non-invasive optical detection system. The system uses light transmission through the abdominal wall to detect meconium in amniotic fluid, eliminating the need for physical penetration of the amniotic sac while maintaining detection capability.
Solution Approach 2:
The patent introduces an optical intermediary system that detects meconium indirectly through light transmission properties. Instead of directly sampling the amniotic fluid, the system measures optical characteristics through the abdominal wall, using light as a mediator to infer meconium presence and concentration.
2Measurement precision
If professional personnel are required for detection, then measurement precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent enables self-service detection by providing a portable optical detection system that can be operated by pregnant women at home without requiring professional medical personnel. The system includes user-friendly interfaces and instructions, allowing laypeople to perform accurate meconium detection independently.
Solution Approach 2:
The patent employs disposable optical sensors and single-use measurement components that can be easily discarded after use. This eliminates the need for complex, expensive, reusable medical equipment and trained personnel, making the technology accessible to laypeople while maintaining detection precision.
3Ease of operation
If visual inspection is used to detect meconium, then ease of operation is improved, but measurement precision deteriorates
Solution Approach 1:
The patent replaces subjective visual inspection with objective optical measurement. The system uses light transmission through the abdominal wall to quantitatively detect meconium, providing precise measurements of meconium concentration and presence without relying on visual interpretation.
Solution Approach 2:
The patent detects meconium through optical properties including color changes and light transmission characteristics. The system measures changes in light absorption and transmission that occur when meconium is present in the amniotic fluid, providing objective and precise detection beyond visual inspection.
4Loss of time
If detection is performed before rupture of membranes, then early identification of fetal distress is improved, but device complexity increases
Solution Approach 1:
The patent enables early detection by providing a portable optical detection system that pregnant women can use at home before rupture of membranes. The self-service nature of the system allows continuous or frequent monitoring without requiring complex medical infrastructure or professional personnel.
Solution Approach 2:
The patent designs a universal optical detection system that can be used by pregnant women throughout pregnancy for early meconium detection, and potentially for other pregnancy monitoring functions. The multi-functionality and portability of the system enable early identification without requiring specialized complex equipment.
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
Enables real-time detection of meconium secretion, facilitating early identification of fetal distress and reducing medical mismanagement by providing a simple, accurate method for laypeople to detect meconium-stained amniotic fluid, both before and after rupture of membranes, and until birth.
Implementation Method 1
meconium detectors using immunoassay strips to detect carcino-embryonic antigen (CEA) levels
Data Source
AI summary
Meconium stained amniotic fluid can indicate intrauterine fetal distress. The invention provides a system and method for detecting meconium in released amniotic fluid in pregnant women, including a collection body such as a hygienic pad, having a meconium detector. This invention is designed to be employed mainly by a lay person at home; it also may provide possible etiologies for fetal distress.