Dermal Patch Biometric Sensor Sample Collection
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Solution Overview
Problem
Current methods for obtaining physiological samples are time-consuming and burdensome, requiring subjects to travel to diagnostic laboratories for sample collection.
Innovation Solution
A dermal patch system with a cartridge and lancet that automatically collects and stores physiological samples, incorporating a biometric sensor and power supply, allowing for sample collection and analysis in various environments, including at home or in the field.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a standard syringe is used to obtain physiological samples in a diagnostic laboratory, then the sample collection is performed by a medical professional, but the process is time-consuming and burdensome to the subject
Solution Approach 1:
The dermal patch system enables self-service sample collection by allowing the subject to attach the patch to their own skin and activate it to draw the physiological sample, eliminating the need for medical professionals and reducing time loss
Solution Approach 2:
The system divides the sample collection process into separate functional components: the dermal patch cartridge for sample storage and the separate lancet for sample extraction, allowing independent optimization of each function
2Reliability
If a biometric sensor and power supply are integrated into the cartridge, then chain of custody can be ensured through biometric data, but the device complexity increases
Solution Approach 1:
The cartridge is designed to perform multiple functions: storing the physiological sample, housing the biometric sensor for identity verification, containing the power supply for activating components, and providing the lancet receiving element for sample extraction, thereby ensuring chain of custody while consolidating components
Solution Approach 2:
The electrical contacts are integrated within the lancet receiving element structure, and the biometric sensor and power supply are housed within the cartridge body, creating a nested arrangement that reduces overall complexity
3Use of energy by moving object
If the power supply is activated only when the lancet engages with the cartridge, then power is provided to the biometric sensor and computer system, but the electrical connection must be reliably closed upon engagement
Solution Approach 1:
The electrical connection reliability is separated from the mechanical engagement by using dedicated electrical contacts (first electrical contacts in the cartridge and second electrical contacts in the lancet) that are specifically designed to close the circuit upon engagement, independent of other components
Solution Approach 2:
The electrical contacts act as intermediaries between the lancet and cartridge, mediating the power transmission only when engagement occurs, ensuring power is provided to the biometric sensor and computer system only under the correct conditions
Data Source
AI summary
A dermal patch system for collecting a physiological sample from a subject includes a cartridge configured to attach to the skin of the subject, and a lancet configured to engage with the cartridge and draw a physiological sample upon engagement. The cartridge includes a biometric sensor configured to obtain biometric data from a subject.