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Yi, Hoon; Kim, Hodam; Kim, Ka Ram; Kim, Ju Hyeon; Kim, Juhee; Lee, Hyunjae; Grewal, Sanjeet S.; Freeman, William D.; Yeo, Woon-Hong
Biosensors & bioelectronics, 07/2024, Volume: 255Journal Article
External ventricular drainage is one of the most common neurosurgical procedures in the world for acute hydrocephalus, which must be performed carefully by a neurosurgeon. Although various neuromonitoring external ventricular drain (EVD) catheters have been utilized, they still suffer from rigidity and bulkiness to mitigate post-EVD placement trauma. Here, we introduce a flexible and low-profile smart EVD catheter using a class of technologies with sensitive electrical materials, seamless integration, and flexible mechanics, which serves as a highly soft and minimally invasive device to monitor electrical brain signals. This device reliably captures biopotentials in real time while exhibiting remarkable flexibility and reliability. The seamless integration of its sensory system promises a minimally invasive EVD placement on brain tissue. This work validates the device's distinct characteristics and performances through in vitro experiments and computational analysis. Collectively, this device's exceptional patient- and user-friendly attributes highlight its potential as one of the most practical EVD catheters. •The developed catheter is capable of real-time brain monitoring to assist in intricate EVD neurosurgery.•Optimally structured electrodes are developed to enhance the reliability and sensitivity of the system.•The system is seamlessly integrated, ensuring the low surface profile of the catheter.•Sensing performance and minimally invasive nature are fully demonstrated via experiment.
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