NovaLeah

AI / ML solution for streamlining medical device cybersecurity processes

Introduction

NovaLeah is a renowned cybersecurity firm specializing in the medical devices sector. Their mission is to provide robust cybersecurity solutions to ensure the safety and effectiveness of medical devices, protecting them from potential cyber threats. As part of their commitment to innovation and excellence, NovaLeah partnered with HST Solutions to develop an AI/ML-based software solution.

Technology Stack

.Net Core

Azure Functions

Razor

Azure Data factory

Azure SQL

Azure containers

Microservices

Services

Project Overview and Challenge

The project was divided into two parts: MDS2 and MDS+. MDS2 aimed to assist medical device manufacturers in navigating the Manufacturer Disclosure Statement for Medical Device Security (MDS2) questionnaire, while MDS+ was developed to help medical device buyers create custom questionnaires for manufacturers.
The challenge lay in the complexity and technical nature of these questionnaires. They often contain hundreds of questions that require specific knowledge about the device’s safety and security features. Furthermore, the responses need to be consistent and accurate, as they are critical for ensuring the safety and security of the devices.
Manually answering these questionnaires can be time-consuming and prone to errors. Moreover, the responses can vary significantly depending on the person filling out the questionnaire, leading to inconsistencies.

AI/ML Solutions and Techniques

To address these challenges, HST Solutions developed an AI/ML-based solution that provides guidance and suggests appropriate responses to streamline and standardize the process of answering these questionnaires.
For MDS2, the software uses Fuzzy string matching, an AI technique that determines the similarity between different strings. This allows the software to match the device in question with similar devices whose questionnaires have already been answered. The software auto-answers these questions using historical data or provides recommendations based on responses from other manufacturers of similar devices.
For MDS+, the software uses a pre-trained semantic similarity model, distil-Roberta from Hugging Face Transformers, to perform semantic similarity searches. This allows buyers to search for questions similar to what they are looking for, enhancing the customization of their questionnaires.

Technical Implementation

The software was deployed using Azure Functions, a serverless computing service that allows for automatic scaling and efficient resource management. The MDS2 and MDS+ products involved a total of nine micro-services, each designed to perform specific tasks such as searching for devices or questions, building and reviewing questionnaires, and suggesting or upserting answers.
The backend was built using a No-SQL database server to handle the unstructured data common in NLP tasks. This database was designed with specific keys to allow unique identification of contents, ensuring efficient data retrieval.
To handle the ‘cold start’ problem common in serverless architectures, different session-state handling tools were used to prevent delays in the product.
The AI/ML models were optimized to work within the constraints of the serverless environment, ensuring they were as compact as possible without compromising their performance. The models were also designed to be stateless to fit with the serverless architecture, with any necessary state information stored in the database.
Overall, the technical implementation of this project demonstrates a careful balance of advanced AI/ML techniques, efficient software architecture, and innovative problem-solving.

Conclusion

The partnership between NovaLeah and HST Solutions resulted in a cutting-edge AI/ML software that significantly enhances the process of creating and answering questionnaires for medical device manufacturers and buyers. Despite the technical challenges, the project was successful in leveraging advanced AI/ML techniques and serverless architecture to deliver an effective and efficient solution. This project further solidifies NovaLeah’s commitment to leveraging advanced technologies to improve cybersecurity in the medical devices sector.

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    We validate, design, and prototype proof-of-concepts like any "creative technology" studio, but we do it in less time and for less money.

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