Synergy device

Currently available devices are able to provide left ventricular support for a short duration only. Development of percutaneously or minimally invasive long-term support devices is also underway. At least three such devices are undergoing preclinical evaluation. The Synergy device (CircuLite, Inc., Hackensack, NJ) is being developed as a pocket circulatory assist (PAC) device that would sit in a subcuatenous pocket over the chest wall and use a micro-pump with cannulas in the subclavian artery and vein to withdraw blood from the left atrium through a transseptal approach and deliver it to the subclavian artery. The device is connected to a power... 

The examples discussed in tliis chapter show a strong synergy between fundamental physical chemistry and device processing metliods. This is expected only to become richer as shrinking dimensions place ever more stringent demands on process reliability. Selecting key aspects of processes for fundamental study in simpler environments will not only enable finer control over processes, but also enable more sophisticated simulations tliat will reduce tire cost and time required for process optimization. 

The extension of an LC-NMR system to include mass spectrometry has been in application for several years [35,36]. By directly coupling a mass spectrometer to an LC-NMR system it is possible to obtain valuable mass spectral data. Configuring the system to have the sample reach the mass spectrometer before it reaches the NMR flow-cell enables the mass spectrometer to be employed as an experimental control device for analysing complex mixtures. Mass spectrometry is an ideal detector, provided that the molecules of interest are ionizable. It provides data rapidly and can thus yield valuable information on parent or daughter ion masses prior to initiating time-consuming NMR experiments. This synergy is not possible when the instruments are not directly coupled. 

The protection of polymers against high doses (20 - 1000 kGy) requires efficient additives preventing and/or stopping chain reaction type oxidative degradation. Primary and secondary antioxidants work well here in synergy. Commercial raw materials are available for radiation-sterilizable medical devices made out of polyolefins and other thermoplastics. Similarly, polymer compounds of suitable formulae are offered commercially for high-dose applications of polymers in nuclear installations. 

The fabrication of CP nanocomposites with metal oxides has become an important aspect for their potential applications in sensors and energy devices. The synergy between CPs and metal oxides provides the resultant nanocomposites with added functionalities compared to their individual parent materials. Wan and co-workers demonstrated that PANI/TiO, PANI/FejO and PANI/y-Fe Oj nanocomposites can be readily fabricated by a self assembling process [90-92]. The mechanism of the self-assembly can be related to the formation of micelles by (1-naphthalene sulfonic acid... 

Sweden) hands, and RSLSteeper s Adult Electric Hands (RSLSteeper, U.K.) are all examples of single-motor designs with a fixed gear ratio. Typical performance for these devices is correspondingly lower [35 N (8 Ibf) pinch, 10 cm/s (4 in/s) speed] than typical performance for those prehensors that utilize synergy or automatic transmissions [80 N (18 Ibf) pinch, 11 cm/s (4.3 in/s) speed]. 

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