Zobrazeno 1 - 10
of 151
pro vyhledávání: '"Kazuto Takashima"'
Publikováno v:
Tribology Online, Vol 19, Iss 1, Pp 42-54 (2024)
In recent years, endovascular treatments, in which a treatment device such as a catheter is inserted into a blood vessel to directly approach a lesion, have become increasingly popular worldwide. For safer treatment and further optimization of medica
Externí odkaz:
https://doaj.org/article/5710000e2cef419795fb5cac42a91c23
Publikováno v:
Sensors & Transducers, Vol 259, Iss 5, Pp 12-18 (2022)
In this paper, mechanical modelling and stress-strain prediction of the ionic type of electroactive polymer (EAP) based capacitive strain sensor under multiaxial loading has been performed using uniaxial tensile data. A highly stretchable sensor with
Externí odkaz:
https://doaj.org/article/f99ec379116543c8ac304e48b08d5b13
Publikováno v:
Sensors, Vol 23, Iss 23, p 9400 (2023)
This paper aims to enhance the capacitance of electroactive polymer (EAP)-based strain sensors. The enhancement in capacitance was achieved by using a free-standing stretchable polymer film while introducing conducting polymer to fabricate a hybrid d
Externí odkaz:
https://doaj.org/article/445b3364e8f7423486a2a37a8a7679ec
Autor:
Kazuto TAKASHIMA, Akinori NAMBA, Hiroto OTA, Yoichi HAGA, Makoto OHTA, Koji MORI, Naoki TOMA, Masaaki SHOJIMA
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 18, Iss 1, Pp 22-00276-22-00276 (2022)
A national questionnaire survey on guidewire penetration accidents by the Japanese Society for Neuroendovascular Therapy reported examples of perforation accidents occurring “during catheter introduction” (75.2% of accidents). In this study, we e
Externí odkaz:
https://doaj.org/article/b29c2d0f52664229a1c26c66c6791096
Publikováno v:
ROBOMECH Journal, Vol 8, Iss 1, Pp 1-15 (2021)
Abstract In the present study, we propose a variable-sensitivity force sensor using a shape-memory polymer (SMP), the stiffness of which varies according to the temperature. Since the measurement range and sensitivity can be changed, it is not necess
Externí odkaz:
https://doaj.org/article/518b39870ffd4aa69294efb35baadccc
Publikováno v:
Sensors, Vol 23, Iss 4, p 2077 (2023)
Force sensors are used in a wide variety of fields. They require different measurement ranges and sensitivities depending on the operating environment because there is generally a trade-off between measurement range and sensitivity. In this study, we
Externí odkaz:
https://doaj.org/article/da5fd25df5b54dc48b415725a9a409d5
Publikováno v:
ROBOMECH Journal, Vol 6, Iss 1, Pp 1-11 (2019)
Abstract To achieve quantitative palpation in vivo, we developed a catheter-type tactile sensor composed of a polyvinylidene fluoride film for minimally invasive surgery. We evaluated the fundamental performance of the prototype sensor by a weight-dr
Externí odkaz:
https://doaj.org/article/30421964d053457d926c01249866c959
Autor:
Takuya OISHI, Kazuto TAKASHIMA, Kiyoshi YOSHINAKA, Kaihong YU, Makoto OHTA, Koji MORI, Naoki TOMA
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 17, Iss 1, Pp 21-00261-21-00261 (2021)
To ensure safe coil embolization for cerebral aneurysms, it is important to investigate the contact force between a coil and an aneurysm wall. Therefore, in our previous study, we developed an experimental system for measuring the contact force betwe
Externí odkaz:
https://doaj.org/article/79bc9214a604491f9c2577410c421584
Publikováno v:
ROBOMECH Journal, Vol 4, Iss 1, Pp 1-8 (2017)
Abstract In this study, we propose a force sensor using a shape-memory polymer (SMP) whose stiffness varies according to the temperature. An SMP can be deformed above its glass transition temperature (T g) by applying a small load. A deformed SMP mai
Externí odkaz:
https://doaj.org/article/e3d130c7f1b34311908827f4e7791715
Autor:
Kazuto TAKASHIMA, Atomu OIKE, Kiyoshi YOSHINAKA, Kaihong YU, Makoto OHTA, Koji MORI, Naoki TOMA
Publikováno v:
Journal of Biomechanical Science and Engineering, Vol 12, Iss 4, Pp 17-00181-17-00181 (2017)
Various catheter simulators using a computer or blood vessel biomodels have been developed for training of medical students and young physicians. Moreover, we have developed a system to simulate a guidewire in blood vessels that uses both numerical a
Externí odkaz:
https://doaj.org/article/769093d8f19346699a03ce194a7d509f