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Kim MJ, Kim CR, Park CS, Kang H, Cho YS, Yeom DH, Kim MJ, Han JH, Ji HB, Cho YC, Min CH, Kim DY, Lee JW, Lee C, Lee SP, Choy YB. Batteryless implantable device with built-in mechanical clock for automated and precisely timed drug administration. Proc Natl Acad Sci U S A 2023; 120:e2315824120. [PMID: 38096418 PMCID: PMC10741381 DOI: 10.1073/pnas.2315824120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Accepted: 11/08/2023] [Indexed: 12/18/2023] Open
Abstract
Adherence to medication plays a crucial role in the effective management of chronic diseases. However, patients often miss their scheduled drug administrations, resulting in suboptimal disease control. Therefore, we propose an implantable device enabled with automated and precisely timed drug administration. Our device incorporates a built-in mechanical clock movement to utilize a clockwork mechanism, i.e., a periodic turn of the hour axis, enabling automatic drug infusion at precise 12-h intervals. The actuation principle relies on the sophisticated design of the device, where the rotational movement of the hour axis is converted into potential mechanical energy and is abruptly released at the exact moment for drug administration. The clock movement can be charged either automatically by mechanical agitations or manually by winding the crown, while the device remains implanted, thereby enabling the device to be used permanently without the need for batteries. When tested using metoprolol, an antihypertensive drug, in a spontaneously hypertensive animal model, the implanted device can deliver drug automatically at precise 12-h intervals without the need for further attention, leading to similarly effective blood pressure control and ultimately, prevention of ventricular hypertrophy as compared with scheduled drug administrations. These findings suggest that our device is a promising alternative to conventional methods for complex drug administration.
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Affiliation(s)
- Min Ji Kim
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Cho Rim Kim
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Chan Soon Park
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul03080, Republic of Korea
| | - Hyejeong Kang
- Center for Nanoparticle Research, Institute for Basic Science, Seoul08826, Republic of Korea
| | - Ye Seul Cho
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul03080, Republic of Korea
| | - Da-Hae Yeom
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul03080, Republic of Korea
| | - Myoung Ju Kim
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Jae Hoon Han
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Han Bi Ji
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Yong Chan Cho
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Chang Hee Min
- Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul03080, Republic of Korea
| | - Do Yeon Kim
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Ji Won Lee
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul08826, Republic of Korea
| | - Cheol Lee
- Department of Pathology, Seoul National University College of Medicine, Seoul03080, Republic of Korea
| | - Seung-Pyo Lee
- Division of Cardiology, Department of Internal Medicine, Seoul National University Hospital, Seoul03080, Republic of Korea
- Center for Nanoparticle Research, Institute for Basic Science, Seoul08826, Republic of Korea
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul03080, Republic of Korea
| | - Young Bin Choy
- Interdisciplinary Program in Bioengineering, College of Engineering, Seoul National University, Seoul08826, Republic of Korea
- Institute of Medical and Biological Engineering, Medical Research Center, Seoul National University, Seoul03080, Republic of Korea
- Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul03080, Republic of Korea
- Innovative Medical Technology Research Institute, Seoul National University Hospital, Seoul08826, Republic of Korea
- ToBIOs Inc., Seongbuk-gu, Seoul02880, Republic of Korea
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