Wearable, Graphene-based Flexible Sensors for Chronic Monitoring of Venous Thromboembolism for High-Risk Patients

用于长期监测高危患者静脉血栓栓塞的可穿戴石墨烯柔性传感器

• 批准号: 10505269
• 负责人: Roger Brooks Bagwell
• 金额: $ 39.61万
• 依托单位: ACTUATED MEDICAL, INC.
• 依托单位国家: 美国
• 财政年份: 2022
• 资助国家: 美国
• 起止时间: 2022-09-15 至 2023-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10505269
• 关键词: Acute; Adhesions; Adhesives; Affect; Age; Anticoagulants; Appointment; Biological; Blood; Blood Vessels; Blood capillaries; Blood coagulation; Blood flow; Brain; Cessation of life; Chemicals; Chronic; Clinical; Clinical Research; Clothing; Coagulation Process; Collaborations; Communication; Coronary artery; Deep Vein Thrombosis; Development; Device Designs; Devices; Diagnosis; Disease; Early Diagnosis; Elastomers; Elderly; Electrophysiology (science); Equipment; Exhibits; Freezing; Frequencies; Funding; Future; Gases; Goals; Health; Heart; Hydration status; Illinois; In Vitro; Individual; Laboratories; Lasers; Lead; Leg; Lower Extremity; Lung; Measurement; Measures; Medical; Medical center; Monitor; Outcome; Pain; Patients; Pennsylvania; Peripheral; Persons; Phase; Physiological; Preclinical Testing; Price; Process; Production; Pulmonary Embolism; Resolution; Risk; Semiconductors; Signal Transduction; Skin; Skin Temperature; Speed; Stream; Stretching; Stroke; Swelling; System; Technology; Temperature; Textiles; Thrombosis; Translations; Travel; Tube; Universities; User-Computer Interface; Vascular Diseases; Veins; Visit; Work; base; clinical application; commercialization; cost; cost effective; design; flexibility; graphene; high risk; improved; in vivo; innovation; laboratory equipment; light weight; lithography; mechanical properties; monitoring device; novel; operation; pre-clinical; preclinical study; research clinical testing; response; sensor; sensor technology; van der Waals force; venous thromboembolism; wearable sensor technology; wireless; wireless communication

This R61/R33 project will move a novel laser-printed wearable sensor technology from laboratory toward commercialization with a first clinical application of improving monitoring options for high-risk Deep Vein Thrombosis (DVT). This proposal is in response to RFA-HL-20-024 Catalyze: Product Definition. The project is a collaboration between Actuated Medical Inc (AMI), the Huanyu Larry Cheng lab at The Pennsylvania State University (PSU), and Hershey Medical Center (HMC). AMI is ISO 13485 certified, FDA-Registered, and FDA GCP & GMP compliant. The sensors developed here will be manufactured in AMI’s Bellefonte, PA facility. Project Approach: The Cheng Lab (PSU) has developed a flexible sensor platform that is low-cost, does not require expensive equipment to manufacture, and can be worn directly on the skin or integrated into clothing. These sensors can be configured to measure temperature, strain, skin hydration, electrophysiologic, and other signals. This sensor set is built upon Dr. Cheng’s doctoral work creating stretchable sensors for health monitoring, antennas for near-field communication, and human-machine interfaces. Initial Clinical Goal: DVT is a condition in which blood clots form deep within peripheral veins, typically in the lower extremities. This disease can cause leg swelling and pain, but more importantly, the clots risk dislodgement and relocation in the lungs (pulmonary embolism), coronary arteries, or brain (stroke), possibly leading to death. Though many treatments exist to mitigate risk, such as anticoagulants, there are few options for chronic monitoring. This project develops a wearable, wireless approach for monitoring at-risk patients for DVT formation. Hypothesis. A graphene-based thermal sensor compression band can successfully monitor occlusion or DVT formation through subtle macrovascular and microvascular thermal effects on the skin. Specific Aims. Aim 1 – Demonstrate Sensor Fabrication in Form Factor for Blood Flow Monitoring. Milestones/Acceptance Criteria: Thermal sensors demonstrate temperature resolution of ≤ 0.04ºC and accurately detect flow or no flow status in capillary tubes in vitro. Flexible RF antennas exhibit sufficient bandwidth to accommodate temperature- dependent frequency modulation corresponding of ≥ 0.25ºC. Aim 2 – Transition to Manufacturing and Higher Volume Processing. Milestones/Acceptance Criteria: RF bandwidth and resolution of temperature- dependent frequency shift of manufacturing-level sensor antenna transmits < 0.04ºC sensor measurements for at least 8/10 devices, and 5 day repeatability of measurements shows no statistically significant differences (robustness/repeatability). Aim 3 – Preclinical Peripheral Thrombosis Study. Milestones/Acceptance Criteria: Demonstrate controlled process sensor and device design/layout that successfully detects 50% and 100% occlusions of leg vein (N=4 for each blockage) in acute preclinical study. Aim 4 (R33) – Transition to Design Freeze. Milestones/Acceptance Criteria: Sensors reaches Design Freeze controls critical for moving through Regulatory approval. Demonstrate wireless communication with >95% of sensors.

这个R61/R33项目将把一种新型激光打印可穿戴传感器技术从实验室推向