Belt worn control system and battery for the percutaneous model of the Jarvik 2000 heart.

abstract：:There is an increasing need for research and development centers to deal with design and evaluation of organ replacement systems, the improvement of older devices, and the study of biocompatibility problems. Special attention, in this article, is focused on the determinant role of the background of the investigators i...

journal_title：Artificial organs

authors： Vanholder R,Ringoir S

更新日期：1989-12-01 00:00:00

abstract：:In patients undergoing exchange-transfusion with hemoglobin (Hb)-based oxygen (O₂) carriers (HBOC), native Hb coexists with newly transfused Hb. The two Hb types share the same arterial and venous PO₂, but their affinities for O₂ vary. A simple spreadsheet model is described aiming at evaluating the contribution of ea...

journal_title：Artificial organs

authors： Samaja M,Terraneo L

更新日期：2012-02-01 00:00:00

abstract：:Pump power loss is defined as input power that is not used for the output work of the pump. Less pump power loss means a higher pump efficiency. A common opinion is that the pump power loss is closely related to heat generation of the pump, which may affect not only the endurance of pump materials, but also blood dama...

journal_title：Artificial organs

authors： Takami Y,Nakazawa T,Makinouchi K,Glueck J,Ohara Y,Benkowski RJ,Nosé Y

更新日期：1996-07-01 00:00:00

abstract：:The aim of the present study was to compare the effects of ProTaper Gold, WaveOne Gold, ProTaper Universal, and WaveOne instruments on the amount of apically extruded debris. Eighty mandibular premolar teeth with straight root canals were selected and assigned to four groups (n = 20). The root canals were instrumented...

journal_title：Artificial organs

authors： Karataş E,Ersoy İ,Gündüz HA,Uygun AD,Kol E,Çakıcı F

更新日期：2016-08-01 00:00:00

abstract：:The purpose of this study was the investigation of the usability and ergonomics of ventricular assist devices (VADs) in everyday usage. Patients with four different VAD types were observed. After implantation, instruction, and discharge from the hospital, the patients returned on a regular basis to the outpatient clin...

journal_title：Artificial organs

authors： Geidl L,Zrunek P,Deckert Z,Zimpfer D,Sandner S,Wieselthaler G,Schima H

更新日期：2009-09-01 00:00:00

abstract：:For the development of a totally implantable ventricular assist system (VAS), we have been developing the vibrating flow pump (VFP), which can generate oscillated blood flow with a relative high frequency (10-50 Hz) for a totally implantable system. In this study, the effects of left ventricular assistance with this u...

journal_title：Artificial organs

authors： Nitta S,Yambe T,Kobayashi S,Hashimoto H,Yoshizawa M,Mastuki H,Tabayashi K,Takeda H

更新日期：1999-01-01 00:00:00

abstract：:Plasma, in an amount corresponding to 0.05 gm fibrinogen/Kg of body weight, was administered during one hour to defibrinogenated dogs subjected to extracorporeal circulation. Four blood filters included in the extracorporeal circuit were removed one by one at 30-minute intervals. The prefilter pressures rose gradually...

journal_title：Artificial organs

authors： Berglin E,Hansson HA,William-Olsson G

更新日期：1979-02-01 00:00:00

abstract：:Although current continuous-flow total artificial hearts (CFTAHs) are much smaller than previous models, venous kinking may still occur after device implantation, especially in smaller animals. By inserting a self-expanding stent at the site of venous narrowing in a sheep model implanted with a CFTAH, we were able to ...

journal_title：Artificial organs

authors： Tuzun E,Parnis S,Rios J,Winkler JA,Cohn WE

更新日期：2011-07-01 00:00:00

abstract：:The rotational axis of the centrifugal pump has some associated problems such as blood destruction and sealing between the axis and pump housing. To improve upon these deficits we have developed a new type of blood pump, the magnetic rotary pump (MRP). The MRP has an original design with no rotational axis and no impe...

journal_title：Artificial organs

authors： Naganuma S,Yambe T,Sonobe T,Kobayashi S,Nitta S

更新日期：1997-07-01 00:00:00

abstract：:Implantable ventricular assist devices have proven efficacious as a bridge to transplantation and as a bridge to recovery. Although current indications for use of assist devices are somewhat limited, they are likely to expand in the upcoming years, including their use as destination therapy for end-stage heart failure...

journal_title：Artificial organs

authors： Hampton CR,Verrier ED

更新日期：2002-11-01 00:00:00

abstract：:Cell exclusion is the phenomenon whereby the hematocrit and viscosity of blood decrease in areas of high stress. While this is well known in naturally occurring Poiseuille flow in the human body, it has never previously been shown in Couette flow, which occurs in implantable devices including blood pumps. The high-she...

journal_title：Artificial organs

authors： Leslie LJ,Marshall LJ,Devitt A,Hilton A,Tansley GD

更新日期：2013-03-01 00:00:00

abstract：:The effects of pyridoxalated hemoglobin polyoxyethylene conjugate (PHP) and other hemoglobin-related substances on arterial blood pressure (ABP) and heart rate (HR) were examined. Infusion of PHP and other hemoglobin-related substances elevated ABP and increased HR. The degree of the increase in ABP and HR did not dif...

journal_title：Artificial organs

authors： Kida Y,Maeda M,Iwata S,Iwashita Y,Goto K,Nishi K

更新日期：1995-02-01 00:00:00

abstract：:Rotary blood pumps are emerging as a viable technology for total artificial hearts, and the development of physiological control algorithms is accelerated with new evaluation environments. In this article, we present a novel hybrid mock circulation loop (HMCL) designed specifically for evaluation of rotary total artif...

journal_title：Artificial organs

authors： Nestler F,Bradley AP,Wilson SJ,Timms DL,Frazier OH,Cohn WE

更新日期：2014-09-01 00:00:00

abstract：:The in vitro development of a vascular stroma might be a solution for the engineering of vascularized tissues, however, in vitro stability of capillary-like structures is limited. In order to test the influence on maintenance of capillary-like structures, human growth hormone (hGH) was added in concentrations of 0.5, ...

journal_title：Artificial organs

authors： Frerich B,Kurtz-Hoffmann J,Lindemann N

更新日期：2005-04-01 00:00:00

abstract：:Options for mechanical circulatory support for the treatment of end-stage heart failure in children are limited. Ventricular assist devices (VADs), which have revolutionized cardiac care in adults, remain largely unavailable for pediatric applications. The PediPump is a new rotary dynamic VAD designed to provide suppo...

journal_title：Artificial organs

authors： Duncan BW,Lorenz M,Kopcak MW,Fukamachi K,Ootaki Y,Chen HM,Chapman PA,Davis SJ,Smith WA

更新日期：2005-07-01 00:00:00

abstract：:The optimization of the monomer composition, using a polymerization kinetic study and the mechanical behavior study of the composites, was the principal objective of this work. The monomeric mixture analyzed is a part of the composite that has been in development at the University of Campinas, Brazil. Parameters such ...

journal_title：Artificial organs

authors： López Palacio RE,de Carvalho Zavaglia CA

更新日期：2003-05-01 00:00:00

abstract：:This article reviews the clinical, biological, radiological, and pathological procedures and their respective indications for the practical diagnosis of the following various histological patterns of renal osteodystrophy: osteitis fibrosa due to parathyroid hormone (PTH) hypersecretion: osteomalacia or rickets due to ...

journal_title：Artificial organs

authors： Fournier A,Oprisiu R,Hottelart C,Yverneau PH,Ghazali A,Atik A,Hedri H,Said S,Sechet A,Rasolombololona M,Abighanem O,Sarraj A,El Esper N,Moriniere P,Boudailliez B,Westeel PF,Achard JM,Pruna A

更新日期：1998-07-01 00:00:00

abstract：:Robotic surgery for intracardiac pathologies in children is relatively uncommon. This study presents our initial experience with robotic-assisted cardiac surgery in children. We also present the feasibility and safety of robotic surgery in children. From May 2013 to June 2018, 30 children underwent totally endoscopic ...

journal_title：Artificial organs

authors： Onan B,Aydin U,Kadirogullari E,Onan IS,Sen O

更新日期：2019-04-01 00:00:00

abstract：:Temporary extracorporeal membrane oxygenation (ECMO) has been established as an essential part of therapy in patients with pulmonary or cardiac failure. As physiological gaseous exchange is artificially altered in this patient group, it is debatable whether a (13) C-breath test can be carried out. In this proof of tec...

journal_title：Artificial organs

authors： Bednarsch J,Menk M,Malinowski M,Weber-Carstens S,Pratschke J,Stockmann M

更新日期：2016-07-01 00:00:00

abstract：:Low molecular weight heparin (LMH) acts as an anticoagulation agent mainly through its anti-activated coagulation factor X (Xa) activity. Thrombelastography (TEG) is expected to be useful to monitor the dosage of LMH during hemodialysis because reaction time on TEG (TEG-r) is considered to reflect blood thromboplastin...

journal_title：Artificial organs

authors： Shinoda T,Arakura H,Katakura M,Shirota T,Nakagawa S

更新日期：1990-12-01 00:00:00

abstract：:Tissue responses to various percutaneous materials with different surface properties and structures were investigated. Dense hydroxyapatite (HA), tricalcium phosphate (TCP), glassy carbon (GC), and 2 types of porous HA were used. Cutaneous and subcutaneous tissues were tightly attached to the surface of the penetratin...

journal_title：Artificial organs

authors： Shin Y,Akao M

更新日期：1997-09-01 00:00:00

abstract：:A bypass flow rate estimation and control system (BECS) for an implantable centrifugal blood pump (ICBP) has been developed in our institute. The estimated flow rate (EF) of the ICBP was derived from the electric power consumption, the rotating speed of a motor, and the blood viscosity presumed by the hematocrit and b...

journal_title：Artificial organs

authors： Wakisaka Y,Okuzono Y,Taenaka Y,Chikanari K,Endo S,Masuzawa T,Takano H

更新日期：1998-06-01 00:00:00

abstract：:Using urea and inulin as markers, we have developed a simple method to calculate intracellular and extracellular fluid volume in patients before and after hemofiltration therapy. During conventional hemofiltration using substitution fluid with a Na+ concentration of 140 mEq/L, a decrease in extracellular fluid volume ...

journal_title：Artificial organs

authors： Kimura G,Satani M,Kojima S,Kuroda K,Itoh K,Ikeda M

更新日期：1982-02-01 00:00:00

abstract：:The major restrictions to the transport of solute and solvent across the peritoneum are the limited peritoneal blood flow, area and permeability. Recent investigations have demonstrated that several vasoactive drugs influence transport parameters. Isoproterenol, nitroprusside, dipyridamole and dopamine exemplify drugs...

journal_title：Artificial organs

authors： Maher JF

更新日期：1979-08-01 00:00:00

abstract：:Extracorporeal membrane oxygenation (ECMO) has long been the sole means of mechanical support for pediatric patients with end-stage cardiac failure, but has a high waitlist mortality and a reported survival to hospital discharge of less than 50%. The purpose of this study was to compare waitlist mortality and survival...

journal_title：Artificial organs

authors： Jeewa A,Manlhiot C,McCrindle BW,Van Arsdell G,Humpl T,Dipchand AI

更新日期：2010-12-01 00:00:00

abstract：:Chronic kidney disease is increasing in both developed and emerging countries with progressive encroachment on health services budgets. In spite of the lack of accurate registries, we tried to focus on the magnitude of the problem on different continents. Prevention of progression has been a remote but reachable goal....

journal_title：Artificial organs

authors： Hafez MH,Abdellatif DA,Elkhatib MM

更新日期：2006-07-01 00:00:00

abstract：:A physiological controller is a key component to optimize the performance of left ventricular assist devices (LVADs) from short term to long term (10-20 years). The difficulties of its design lie in the inaccurate modeling of any particular human cardiovascular system because of limited knowledge, the large fluctuatio...

journal_title：Artificial organs

authors： Wu Y,Allaire PE,Tao G,Adams M,Liu Y,Wood H,Olsen DB

更新日期：2004-10-01 00:00:00

abstract：:This work presents results of preliminary studies concerning application of magnetic bearing in a ventricular assist device (VAD) being developed by Dante Pazzanese Institute of Cardiology-IDPC (São Paulo, Brazil). The VAD-IDPC has a novel architecture that distinguishes from other known VADs. In this, the rotor has a...

journal_title：Artificial organs

authors： Horikawa O,de Andrade AJ,da Silva I,Bock EG

更新日期：2008-04-01 00:00:00

abstract：:A small and light direct-drive centrifugal pump has been developed for cardiopulmonary bypass. In the development process, blood compatibility studies including a hemolysis study, an in vitro fluid dynamic performance study, and in vivo durability and feasibility studies were performed. The centrifugal pump with a 50 ...

journal_title：Artificial organs

authors： Jikuya T,Sasaki T,Aizawa T,Shiono M,Glueck JA,Smith CP,Feldman L,Sakuma I,Sekela ME,Noda T

更新日期：1992-12-01 00:00:00

abstract：:The blood flow through the hemofilter device is the key point for ultrafiltrate production during continuous arteriovenous hemofiltration. It mainly depends on arteriovenous pressure gradient and vascular access, which is the major problem for arteriovenous hemofiltration in infants and small children. In infants, we ...

journal_title：Artificial organs

authors： Zobel G,Trop M,Beitzke A,Ring E

更新日期：1988-02-01 00:00:00