Upper Arm Blood Pressure Connector With Airtight Anti-Misconnection Lock
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing upper arm blood pressure monitors face issues with airtight stability and correct connector alignment, leading to inaccurate readings and potential misconnection with other medical devices.
Innovation Solution
The design enhances the female connector of the upper arm blood pressure monitor with a gas manifold member, hermetic ring, and embedded buckle, which provides stable engagement with the male connector and meets different pull-out force requirements, ensuring better air sealing and preventing misconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the connector structure is simplified to reduce design complexity, then manufacturing cost decreases, but connection stability and airtightness deteriorate
Solution Approach 1:
The connector is divided into distinct functional segments: the female connector with O-ring for sealing, the embedded buckle for mechanical interlocking, and the male connector with corresponding engagement features. This segmentation allows each component to be optimized independently for its specific function while maintaining overall simplicity
Solution Approach 2:
The embedded buckle is nested within the female connector housing, with the O-ring seated in a groove within the buckle structure. This nested arrangement integrates multiple functions (sealing, locking, and structural support) into a compact unified component without increasing overall device complexity
2Reliability
If the connector structure is enhanced to improve connection stability, then measurement accuracy improves, but manufacturing complexity increases
Solution Approach 1:
The O-ring is pre-installed in a groove within the embedded buckle during manufacturing, and the buckle is pre-positioned in the female connector housing. This preliminary arrangement ensures proper sealing and mechanical engagement are built-in from the start, eliminating the need for complex adjustment mechanisms during assembly or use
Solution Approach 2:
The embedded buckle acts as an intermediary component between the male and female connectors, providing both mechanical interlocking through its protrusion-ridge engagement and sealing through the O-ring. This intermediate element simplifies the overall design by consolidating multiple functions into a single mediating component
3Reliability
If the connector design follows international standards to prevent misconnection, then safety improves, but design flexibility decreases
Solution Approach 1:
The connector features asymmetric geometry with specific ridge orientations and corresponding grooves that conform to ISO 80369-5 standards. This asymmetric design prevents misconnection by ensuring compatibility only in the correct orientation, while the modular nature of the design allows adaptation to different pull-out force requirements through parameter adjustment rather than structural redesign
4Reliability
If the connector is made more robust to prevent air leakage, then measurement accuracy improves, but ease of assembly decreases
Solution Approach 1:
The O-ring provides flexible sealing capability, conforming to the mating surfaces of the male and female connectors to ensure airtightness. This flexible sealing approach achieves reliable airtightness without requiring rigid, complex sealing structures that would difficult assembly
Solution Approach 2:
The embedded buckle with integrated O-ring groove and protrusion features automatically positions the sealing elements during assembly. The self-aligning geometry ensures proper O-ring seating and mechanical engagement without requiring precise manual adjustment, maintaining ease of assembly while ensuring robust airtight connection
Data Source
Figure 1
Figure 2
Figure 3A
AI summary
The disclosure provides an upper arm blood pressure monitor (1) which comprises: a measuring host (10), a female connector (7), and a male connector (8). The measuring host (10) includes a housing (101), and the female connector (7) is disposed within the housing (101). The female connector (7) includes a gas manifold member (11), a hermetic ring (12) disposed within the gas manifold member (11), and an embedded buckle (13) also disposed within the gas manifold member (11). There is a deformable clearance between the embedded buckle (13) and the hermetic ring (12). The embedded buckle (13) includes a brim portion (131) being an annular body and a crown portion (132) extending from a periphery of the brim portion (131), wherein the crown portion (131) includes a plurality of notches (133) and the notches (133) evenly divide the crown portion (132) to correspondingly form a plurality of buckling pieces (134), and wherein a protrusion (135) is formed on a foremost end of each of the buckling pieces (134). When the female connector (7) and the male connector (8) are tightly fit to and connected with each other, the protrusions (135) of the embedded buckle (13) correspondingly engage with an annular recess (80) of the male connector (8).