We’re all different, and it’s no surprise our skin characteristics vary person to person. This has implications for the electrode design process, as the full range of characteristics will need to be covered.
Variations can include different impedance levels, both from person to person and across the body, and the ability of the skin to produce sweat and form that all important conductive pathway.
The electrode material also has an impact. Intuitively we may think of conductance being the only important material, but some of our common conductive materials, like aluminium, are terrible ECG dry electrode materials. Understanding the core mechanisms and having the support to analyse and choose the right material for your product can be the difference between success and failure.
2. Dry Electrode Mechanical Design
Unlike traditional medical systems, consumer devices aesthetics are incredibly important for the brand. Smartwatches are as much a fashion item as they are a health monitoring tool and finding this balance between form and function can be a challenge.
The performance of EKG dry electrodes can be impacted by size, position, and surface finish. For a given material, different sizes and the position on the body can affect the interaction with the skin and the resultant signal can vary significantly in quality. The surface finish can alter the contact mechanisms, and some coatings can even further impede the flow of the EKG signal.
B-Secur: Experts in EKG
A rich amount of data can be gathered using wearable sensors in order to monitor and record real-time information about patients’ health. Therefore, it is crucial to manage and overcome these issues to allow improved sensor performance.
B-Secur has over 70 combined years experience in the engineering team, enabling us to provide an end to end system solution for EKG. We have nurtured close partnerships with leading EKG AFE suppliers, allowing our experts to advise on a range of areas to ensure the best possible system performance, including; AFE selection, configuration and setup, optimisation of AFE to electrodes and AFE hardware verification.