Medical Sensor Bayonet Attachment for Stable Transmitter Connections
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Solution Overview
Problem
Current medical devices for diabetes management, such as continuous glucose monitoring systems, face issues with complex use models, durability, and stability, particularly in sensor and transmitter arrangements, which affect comfort and ease of use.
Innovation Solution
A medical sensor device with a sensor assembly and a transmitter assembly that utilize a bayonet-style attachment mechanism, allowing for axial movement and rotation to secure the components together, featuring mechanical interfaces and snap arms for stability and ease of connection, along with a connector arrangement to ensure correct orientation and secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a bayonet-style attachment mechanism is used to connect sensor and transmitter assemblies, then connection stability and device robustness are improved, but device complexity increases due to additional mechanical interface components
Solution Approach 1:
The device is divided into separate sensor assembly and transmitter assembly components that can be independently manufactured and assembled. The mechanical interface uses segmented elements including lugs on the sensor assembly that engage with slots on the transmitter assembly, allowing for modular connection while maintaining stability.
Solution Approach 2:
The transmitter assembly is designed to be positioned on top of the sensor assembly, creating a nested configuration where one component sits upon another. This nesting arrangement provides stable mechanical connection through the bayonet mechanism while keeping the overall device footprint compact.
2Stability of the object's composition
If the transmitter assembly is positioned on top of the sensor assembly, then device stability and comfort are improved, but manufacturing complexity increases due to precise alignment requirements
Solution Approach 1:
The mechanical interface employs asymmetric features including lugs positioned at specific locations on the sensor assembly and corresponding slots on the transmitter assembly. This asymmetric design ensures proper orientation and alignment during assembly, simplifying the manufacturing process while maintaining stability.
Solution Approach 2:
The mechanical interface components are pre-configured during manufacturing to guide proper alignment during final assembly. The lug-slot mechanism is designed to automatically align components as they are assembled, reducing the need for high-precision manual positioning while ensuring stable final assembly.
3Strength
If mechanical interface components with lugs and slots are used, then connection robustness is improved, but ease of operation decreases due to more complex attachment procedures
Solution Approach 1:
The mechanical interface allows for dynamic assembly and disassembly operations. The lug-slot mechanism enables straightforward insertion and rotation movements during attachment, and corresponding release movements during detachment, making the operation simple while maintaining robust connection when properly assembled.
Data Source
AI summary
A medical sensor device includes a sensor assembly including an underside surface for attachment against a patient's skin, a sensor portion to detect a characteristic of the patient, and sensor assembly contacts which in operation carry signals representing the detected characteristic. The device also includes a transmitter assembly removably engageable with the sensor assembly and including circuitry to take the signals from the sensor assembly contacts and to transmit readings of the detected characteristic to external equipment. The device also includes mechanical interface components on the sensor assembly and the transmitter assembly which allow the transmitter assembly to be brought into abutment with the sensor assembly at a first angular position via relative axial movement between them, and then allow a relative rotation of the assemblies with respect to one another towards a second angular position and presents axial separation of the assemblies in the second angular position.