Results 211 to 220 of about 26,861 (267)

Ultrahigh-resolution spectral domain optical coherence tomography with a blue-diode-pumped Ti:sapphire laser and an axicon lens. [PDF]

Biomed Opt Express
Zeyen M, Lajtner K, Zaugg G, Liepelt M, Mühlebach L, Loparic M, Resan B.   +6 more
europepmc   +1 more source

Stimulated Raman Scattering Microscopy: Real-Time In-Situ Physical and Chemical Characterization of Reverse Osmosis Desalination Membrane Scaling. [PDF]

Environ Sci Technol
Simmons YL, Andersen JM, Zohrabi M, Bright VM, Greenberg AR, Gopinath JT.   +5 more
europepmc   +1 more source

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Controller for an Axial Flow Blood Pump

Artificial Organs, 1996
Abstract: A rotary blood pump inherently provides only one noninvasive “observable‘” parameter (motor current) and allows for only one “controllable” parameter (pump speed). To maintain the systemic circulation properly, the pump speed must be controlled to sustain appropriate outlet Hows and perfusion pressure while preventing pulmonary damage caused
H, Konishi, J F, Antaki, D V, Amin, J R, Boston, J P, Kerrigan, W A, Mandarino, P, Litwak, K, Yamazaki, M, Macha, K C, Butler, H S, Borovetz, R L, Kormos   +11 more
openaire   +3 more sources

Axial Type Self‐Bearing Motor for Axial Flow Blood Pump

Artificial Organs, 2003
Abstract: An axial self‐bearing motor is proposed which can drive an axial blood pump without physical contact. It is a functional combination of the bi‐directional disc motor and the axial active magnetic bearing, where it actively controls single degree‐of‐freedom motion, while other motions such as lateral vibration are passively stable.
Yohji, Okada, Toru, Masuzawa, Ken-Ichi, Matsuda, Kunihiro, Ohmori, Takashi, Yamane, Yoshiaki, Konishi, Shinya, Fukahori, Satoshi, Ueno, Seung-Jong, Kim   +8 more
openaire   +2 more sources

Off-pump Replacement of the INCOR Implantable Axial-flow Pump

The Journal of Heart and Lung Transplantation, 2009
Owing to the actual increase of mechanical circulatory support durations, total or partial replacement of ventricular assist devices (VADs) will most certainly have to be performed with increasing frequency. Herein we report the case of a patient in whom an INCOR (Berlin Heart AG, Berlin) implantable axial-flow pump was replaced without the use of ...
Kuniki, Nakashima, Matthias E W, Kirsch, Emmanuelle, Vermes, Odile, Rosanval, Daniel, Loisance   +4 more
openaire   +2 more sources

Numerical Simulation of an Axial Blood Pump

Artificial Organs, 2007
Abstract:  The axial blood pump with a magnetically suspended impeller is superior to other artificial blood pumps because of its small size. In this article, the distributions of velocity, path line, pressure, and shear stress in the straightener, the rotor, and the diffuser of the axial blood pump, as well as the gap zone were obtained using the ...
Leok Poh, Chua, Boyang, Su, Tau Meng, Lim, Tongming, Zhou   +3 more
openaire   +2 more sources

Axial Flow Catheter Pump for Circulatory Support

Biomedizinische Technik/Biomedical Engineering, 2002
The development of a percutaneously insertable catheter pump for temporary left ventricular and circulatory support in patients with acute ischemic cardiomyopathy.The expandable axial flow pump (introduction diameter 9-F, expanded diameter 6.5 mm) is mounted at the tip of a catheter, designed to be placed in aortic transvalvular position.
T, Schmitz-Rode, J G, Pfeffer, S, Graf, F, Buss, C, Brücker, T, Siess, R W, Günther   +6 more
openaire   +2 more sources

Basic Performance of a Miniature Intraventricular Axial Pump

Artificial Organs, 1996
Abstract: A miniature intraventricular axial pump for left ventricular (LV) support is under development. This pump was designed for placement in the LV cavity by insertion through the LV apex with the outlet located at the ascending aorta via the aortic valve. The basic hydro‐dynamic characteristics represented as a relationship between pump head (H)
M, Umezu, Y, Ohtake, K, Sakata, T, Fujimoto, K, Yamazaki, H, Koyanagi, H, Iiyama, T, Mori, K, Higuchi   +8 more
openaire   +3 more sources

Axial Suspension Fuzzy PID Control for Axial Artificial Heart Pump

Applied Mechanics and Materials, 2014
This paper designs an intelligent fuzzy PID controller of electromagnetic bearing for axial artificial heart pump (AAHP) to achieve re-stable suspension and quick response performance. and Matlab/Simulink is employed to simulate floating process of the rotor and the process of response to displacement disturbance.
Chang Jun Zhao, Yu Xin Sun, Huang Qiu Zhu, Xian Xing Liu   +3 more
openaire   +1 more source