Results 201 to 210 of about 17,797 (259)

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 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

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

A Two Stage Axial Flow Pump

ASAIO Journal, 1995
From an engineering point of view, the suitable revolution number for high efficiency operation of an axial flow pump is known. A multistage axial flow pump is a useful tool for reducing revolution number with a high efficiency axial flow pump. A two stage (25) axial flow pump designed at a 5 L/min flow rate and a 100 mmHg pressure head was evaluated ...
Yoshinari Wakisaka, Takeshi Nakatani, Hirohumi Anai, Kenzi Araki, Yoshiyuki Taenaka, Eisuke Tatsumi, Toru Masuzawa, Yuzo Baba, Kazuhiro Eya, Kouiti Toda, Motomu Tominaga, Won Woo Choi, Hisateru Takano   +12 more
openaire   +1 more source

Submersible axial-flow pumps for dredges

Hydrotechnical Construction, 1995
1. For the first time in Russia a submersible axial-flow dredge pump was developed and tested for installation as a first-stage pump on dredges to reduce the negative pressure before the hold dredge pump and to increase its positive suction head. 2.
S. P. Ogorodnikov, N. N. Kozhevnikov, A. E. Kulakov   +2 more
openaire   +1 more source

Advanced Suction Detection for an Axial Flow Pump

Artificial Organs, 2006
Abstract:  An automatic detection system for ventricular collapse was developed and tested in a first clinical trial as part of a physiological speed control concept for axial flow pumps. From this clinical experience, and based on the acquired data during this trial, an optimization of the developed system was performed.
Michael, Vollkron, Heinrich, Schima, Leopold, Huber, Robert, Benkowski, Gino, Morello, Georg, Wieselthaler   +5 more
openaire   +2 more sources

Development of an Axial Flow Blood Pump LVAS

ASAIO Journal, 1992
Nimbus, Inc., (Rancho Cordova, CA) and the University of Pittsburgh (Pittsburgh, PA) are collaborating to develop an implantable rotary blood pump that can be used as a left ventricular assist system (LVAS). The short-term goal of this project is to show that an LVAS based on this pump can operate safely and reliably during chronic implantations in ...
K C, Butler, T R, Maher, H S, Borovetz, R L, Kormos, J F, Antaki, M, Kameneva, B P, Griffith, T, Zerbe, F D, Schaffer   +8 more
openaire   +2 more sources

A Less Invasive Approach to Axial Flow Pump Insertion

The Journal of Heart and Lung Transplantation, 2008
Implantation of a HeartMate II or a Jarvik 2000 FlowMaker left ventricular assist system (LVAS) usually involves a mid-line sternotomy and the use of cardiopulmonary bypass (CPB). In patients with numerous co-morbid conditions, however, surgical trauma may be minimized by implanting the LVAS via a minimally invasive approach, preferably without CPB.In ...
I.D. Gregoric, LA FRANCESCA, Saverio, T. Myers, W.E. Cohn, P. Loyalka, B. Kr, C. Gemmato, O.H. Frazier   +7 more
openaire   +3 more sources