Extraction Tools

The following equipment is necessary for successful lead extraction [3]  

Implant tools typically supplied for lead implant, allowing manipulation of the lead so that the lead exits the vasculature via the implant vein. These tools include such items as standard stylets (nonlocking) and fixation-screw retraction clips. 

Traction devices specialized locking stylets, snares, sutures, grasping, or other devices used to engage or entrap and remove the lead or lead fragments. 

Mechanical sheaths sheaths composed of metal. Teflon, polypropylene, or other materials they require manual advancement over the lead and rely on the mechanical properties of the sheath to disrupt fibrotic adhesions. 

Laser sheaths sheaths that employ fiberoptics 

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Use packing extraction tool to carefully remove packing from the gland. 

An SPE method has been developed to replace the classical LLP method. Water sample is extracted with an SPE column such as Cig and styrene-divinylbenzene copolymer (PS-2) cartridges, which consist of a reversed bonded-phase silica sorbent, provided as an extraction tool. This is a simple and rapid method, and applied to the determination of residual amounts of naproanilide, propanil, mefenacet, etc. This system determines the residual amounts of most of the pesticides and has been successfully applied to determination of pesticides in water. 

Mandal, V. Mohan, Y. Hemalatha, S. 2007. Microwave assisted extraction An iimovative and promising extraction tool for medicinal plant research. Pharmacogn. Rev. 1 7-18. 

Special features/comments temperature can be set independently for each rv can be converted to parallel evaporator, see also Section 8.4 and Table 7 temperature/time programs possible top fdtration unit available fully enclosed reagent/solvent addition under agitation possible parallel evaporation on the instrument liquid-liquid extraction tool parallel filtration (vessel to vessel) push-button or PC control this is an upgradable light version of the fully automated Chemspeed ASW 2000 (see Table 5)... 

S. M. Smith. 2000. BET Brain extraction tool. Technical report TR00SMS2a. Oxford Centre for Functional Magnetic Resonance Imaging of the Brain. Oxford University... 

However, SC-CO2 appears to be a promising extraction tool for the exploitation of wastes and by-products mainly because of the minimized impact on the sample (and on the environment) and its great selectivity. Partial confirmation of this ability is already available in literature, and this review has tried to report some examples. 

Physical Verification Tools Current design rule checking (DRC) tools need to be enhanced to handle the design rules associated with inter-chip contacts. In addition, the parasitic extraction tools have to consider coupling between adjacent device layers as well as the RLC parameter of inter-chip contacts. One important concern is the electromagnetic noise in the whole system since isolation among different devices is hard to guarantee. 

Extracting Tool Orientation and Transformation Matrix from CL File... 

Bracke F, Meijer A, Van Gelder B (2002) Extraction of pacemaker and implantable cardioverter defibrillator leads patient and lead characteristics in relation to the requirement of extraction tools. Pacing and Clin Electrophysiol 25 1037-1040... 

In the presence of leads exposed through tributary veins of the SVC system (cephalic, subclavian, external jugular), the venous entry approach is the first-choice technique (Fig. 4.22). This approach is also known as the superior or SVC approach, even if the term venous entry approach appears to be more correct. The venous entry approach consists of a combination of traction by a stylet, mechanical dilation of binding sites by the dilating sheaths, and countertraction at the tip of the lead by the outer telescopic sheaths. Lead extraction tools necessary to prepare the lead and accomplish the venous entry approach are reported in Table 4.6. 

An alternative to the basket and tip-deflecting wire is the Needle s Eye snare (Fig. 4.27). This extraction tool can be inserted through and used in conjunction with the Byrd Workstation [23]. This, too, is a transfemoral grasping tool that forms a basket snare around the lead body. It is delivered to the vicinity of the lead through a long, flexible, 12-F cannula placed coaxially within a larger outer cannula that has a hemostasis valve at its proximal end. The flush port is continuous with the snare s innermost lumen. The Needle s Eye snare is designed to... 

A new extraction tool was introduced in recent years by Cook Vascular. Due to the observation that rotation of the mechanical polypropylene sheath was one of the most important determinants of the technique s effectiveness, a system for rotating a mechanical dilator was introduced. The Evolution mechanical dilator sheath is a rotational-ly powered telescoping device with by a steel inner sheath. The rotation mechanism is manually operated, allowing rotation of the steel sheath, and is provided with small winglets near the distal end. This technique combines counterpressure, rotation, and movement of the threaded end of the sheath to enhance dilatation effectiveness at binding sites. 

Extraction tools essential tools are described in the appropriate chapter. The choice of a specific tool will depend on the physician s preferences and experience. 

The use of a locking stylet during transvenous removal can be due to the decision to use a traction device (as the main extraction tool or in combination with sheaths). Obviously, if the stylet cannot be inserted or if it stops very early in the coil lumen, traction cannot be performed. Regardless of the use of traction devices, the presence of a stylet into the lead is helpful during any dilatation technique. Either mechanical or powered sheaths, while advancing over the lead and freeing it from binding sites, induce mechanical stress on the lead body. The stiffer the lead, the more effective and safe is dilatation. 

Supercritical fluid extraction (SEE) is a selective technique of sample preparation that enables the preparation of matrices by varying several physical parameters. Nowadays, it is considered to be the best replacement for many extraction technologies, such as accelerated solvent, Soxhlet solvent, microwave assisted extraction and so on. It was originally marketed as a universal extraction tool in 1988 by Isco Inc. (Lincoln, Nebraska, USA), Lee Scientific (Salt Lake City, Utah, USA) and Suprex Corp. (Pittsburgh, Pennsylvania, USA). The basic components of the SFE instmment are a carbon dioxide reservoir, a pump, an extraction vessel, an oven, a restrictor... 

The following should be considered when selecting among the many different types of PBA extraction tools ... 

The degree of access required inside the equipment to engage and use the extraction tool... 

To summarize briefly some of the recent improvements that have spurred the development of residue chemistry, mention should be made of new extraction tools such as the use of Solid Phase Extraction (SPE) (75), universal solvent systems, miniaturized systems that cut back on solvent use, and techniques like headspace sanq)ling that can make solvent extraction... 

The principle of SPME found its extension in the Stir Bar Sorptive Extraction tool SBSE (Sandra etal., 2000, Hoffmann 2000). The extraction is performed... 

Tool A Data Moilel Toot A Data Extract Tool B Data Extract Tool B Data Model... 

When coupling gas chromatography to plasma spectrometry, the use of solid-phase microextraction (SPME) as a solvent-free extraction tool is particularly useful. Indeed, volatile species (directly or following derivatization) can be collected from either the sample headspace or the liquid phase, and non-volatile species from the liquid phase even flash-heating can be used for rapid transfer of the analytes into the GC [721]. Multi-capillary GC can also be used for high throughput [722]. 

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