Cuff Interface Member Snap-Fit Coupling for Cardiovascular Monitoring
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Solution Overview
Problem
Existing cuff-type monitoring devices for cardiovascular parameters face challenges in providing a simple and mechanically robust connection between the cuff assembly and control unit housing while accommodating electrical and pneumatic couplings, which complicates assembly and aesthetics.
Innovation Solution
A cuff-type monitoring device with a separate interface member that uses snap-fit retaining members and screws for secure coupling, featuring a concave face to match the cylindrical control unit housing, allowing for hidden pneumatic and electrical connections, and optional features like interlock members and thin, elegant design for enhanced stability and aesthetics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a simple and mechanically robust link member is used to connect the cuff assembly and control unit housing, then the mechanical strength and simplicity are improved, but the ability to accommodate electrical and pneumatic connections is worsened
Solution Approach 1:
The connection system is divided into separate functional components: the interface member handles mechanical connection with snap-fit retaining members, while electrical and pneumatic connections are provided as separate through-holes and channels within the same member. This segmentation allows each component to optimize its specific function without compromising the others.
Solution Approach 2:
The interface member is designed as a multi-functional component that simultaneously provides mechanical attachment (via snap-fit retaining members), electrical connection (via through-holes for connection wires), and pneumatic connection (via channels for pneumatic lines). This universal design eliminates the need for separate connection elements for each function.
2Reliability
If connections are made visible on the exterior of the device, then the connection reliability is improved, but the aesthetic appearance is worsened
Solution Approach 1:
The connection elements (through-holes for electrical wires and channels for pneumatic lines) are nested within the thickness of the interface member, rather than protruding from its surface. The retaining members are configured to be snap-fit within recesses in the control unit housing, creating a flush, hidden connection that maintains aesthetic appearance while ensuring reliable attachment.
3Ease of manufacture
If the interface member is integrated into the control unit housing, then the assembly simplicity is improved, but the ease of disassembly and reassembly is worsened
Solution Approach 1:
The interface member is designed with dynamic attachment characteristics: the snap-fit retaining members can be easily released by applying force in the opposite direction of the snap-fit engagement. This allows the interface member to be quickly attached and detached without tools, providing both manufacturing simplicity and ease of repair.
Solution Approach 2:
The interface member acts as an intermediary component between the cuff assembly and control unit housing, providing a standardized connection interface. This intermediary design allows for easy disassembly and reassembly while maintaining manufacturing simplicity, as the interface member can be produced as a separate, standardized component.
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 solution simplifies assembly, provides a strong and aesthetically pleasing device with hidden connections, and allows for easy disassembly and reassembly without visible screws, enhancing the device's mechanical robustness and user experience.
Implementation Method 1
the resilient cuff holder comprises two retaining members, the interface member comprising two complementary retaining members, configured to be snap-fit with the retaining members
Data Source
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AI summary
A cuff-type monitoring device (10), for collecting cardiovascular data relating to an individual user, comprising a control unit housing (7) including a pump, a cuff assembly (18) including a resilient cuff holder (3) and an interface member (6) arranged at the control unit housing, provided integral with the control unit housing or as a separate part, wherein there is provided at least a pneumatic coupling and an electrical coupling through the interface member, for coupling the cuff assembly to the control unit housing, wherein the resilient cuff holder comprises two retaining members (38), the interface member (6) comprising two complementary retaining members (68), configured to be snap-fit with the retaining members, and assembly method to assemble the device.