Electrical power to run ventricular assist devices using the Free-range Resonant Electrical Energy Delivery system

Waters, Benjamin H.; Park, Jiheum; Bouwmeester, J. Christopher; Valdovinos, John; Geirsson, Arnar; Sample, Alanson P.; Smith, Joshua R.; Bonde, Pramod

doi:10.1016/j.healun.2018.08.007

Cited by 19 publications

(11 citation statements)

References 15 publications

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“…Elimination of the percutaneous drivelines by the use of transcutaneous and wireless energy transfer systems would eliminate DLI. [128][129][130] Current recommendations on DLES care and DLI management are predominantly based on expert consensus and the clinical experience of experienced VAD centers. Careful DLES care including obligatory driveline immobilization, previously prepared sterile dressing change kits, and continuous patients education on DLES care are crucial for prevention of DLI.…”

Section: Treatmentmentioning

confidence: 99%

Ventricular Assist Device Driveline Infections: A Systematic Review

Krželj

Petričević

Gašparović

et al. 2021

Thorac Cardiovasc Surg

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Infection is the most common complication in patients undergoing ventricular assist device (VAD) implantation. Driveline exit site (DLES) infection is the most frequent VAD infection and is a significant cause of adverse events in VAD patients, contributing to morbidity, even mortality, and repetitive hospital readmissions. There are many risk factors for driveline infection (DLI) including younger age, smaller constitution of patients, obesity, exposed velour at the DLES, longer duration of device support, lower cardiac index, higher heart failure score, DLES trauma, and comorbidities such as diabetes mellitus, chronic kidney disease, and depression. The incidence of DLI depends also on the device type. Numerous measures to prevent DLI currently exist. Some of them are proven, whereas the others remain controversial. Current recommendations on DLES care and DLI management are predominantly based on expert consensus and clinical experience of the certain centers. However, careful and uniform DLES care including obligatory driveline immobilization, previously prepared sterile dressing change kits, and continuous patient education are probably crucial for prevention of DLI. Diagnosis and treatment of DLI are often challenging because of certain immunological alterations in VAD patients and microbial biofilm formation on the driveline surface areas. Although there are many conservative and surgical methods described in the DLI treatment, the only possible permanent solution for DLI resolution in VAD patients is heart transplantation. This systematic review brings a comprehensive synthesis of recent data on the prevention, diagnostic workup, and conservative and surgical management of DLI in VAD patients.

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Section: Treatmentmentioning

confidence: 99%

Ventricular Assist Device Driveline Infections: A Systematic Review

Krželj

Petričević

Gašparović

et al. 2021

Thorac Cardiovasc Surg

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“…Table 1 summarizes the characteristics of several cIMDs and their power requirements. [20,[28][29][30][31][32][33][34][35][36][37][38][39][40] For instance, when defibrillation occurs, the ICD needs to delivery of high voltage electric shocks (provide at least 5 W pulse power for 10 s), so it demands a higher power capability than a pacemaker. [41] ICDs are frequently powered by lithium/silver vanadium oxide (Li/ SVO) batteries, which encounters the problem of delay of shock delivery due to the increasing resistance during discharging.…”

Section: Continuous Energy Requirement and Power Management In Cimdsmentioning

confidence: 99%

Battery‐Free and Wireless Technologies for Cardiovascular Implantable Medical Devices

Zhang

Das

Zhao

et al. 2022

Adv Materials Technologies

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Cardiovascular disease continues to be one of the dominant causes of global mortality. One effective treatment is to utilize cardiovascular implantable devices (cIMDs) with multi‐functional cell sensing and monitoring features that have the potential to manipulate cardiovascular hyperplasia disorders as well as provide therapy. However, batteries with a fixed capacity entail high‐risk surgeries for battery‐replacement, which causes health hazards and imposes significant costs to patients. This review accesses comprehensive power solutions for cIMDs, from conventional batteries to state‐of‐the‐art energy harvesters and wireless power transfer (WPT) schemes. In particular, WPT has great potential to eliminate the percutaneous wires and overcome frequent battery removal. Here, the fundamentals, power transfer efficiency, antenna design and miniaturization, and operating frequencies in various WPT schemes are presented. Moreover, the power loss attenuation and bio‐safety standard (specific absorption rate) for implants are also considered in WPT design envelope. In addition, wireless data transmission of implantable devices from external to internal milieu (and vice versa) along with different modulation and demodulation techniques are investigated. The last advanced power solutions for cIMDs in in‐vivo and in vitro research are illustrated throughout. Finally, specifications and future potential of WPT systems in cIMDs are highlighted.

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“…TETS intolerance to coil misalignment burdens their systematic application to a patient population with varying body types (El-Banayosy et al 2003 ; Waters et al 2014 ). To tackle this challenge, recent efforts developed free-range resonant electrical energy delivery (FREE-D) systems that employ magnetic resonance to successfully transmit power in both short- and long-range distances (Waters et al 2018 ). In a small-scale clinical trial, the use of coplanar energy transfer (CET) proved to be feasible for powering continuous flow LVADs (Pya et al 2019 ).…”

Section: Alternative Solutions For High-power Transfermentioning

confidence: 99%

Systems of conductive skin for power transfer in clinical applications

Kourouklis

Kaemmel

et al. 2021

Eur Biophys J

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The primary aim of this article is to review the clinical challenges related to the supply of power in implanted left ventricular assist devices (LVADs) by means of transcutaneous drivelines. In effect of that, we present the preventive measures and post-operative protocols that are regularly employed to address the leading problem of driveline infections. Due to the lack of reliable wireless solutions for power transfer in LVADs, the development of new driveline configurations remains at the forefront of different strategies that aim to power LVADs in a less destructive manner. To this end, skin damage and breach formation around transcutaneous LVAD drivelines represent key challenges before improving the current standard of care. For this reason, we assess recent strategies on the surface functionalization of LVAD drivelines, which aim to limit the incidence of driveline infection by directing the responses of the skin tissue. Moreover, we propose a class of power transfer systems that could leverage the ability of skin tissue to effectively heal short diameter wounds. In this direction, we employed a novel method to generate thin conductive wires of controllable surface topography with the potential to minimize skin disruption and eliminate the problem of driveline infections. Our initial results suggest the viability of the small diameter wires for the investigation of new power transfer systems for LVADs. Overall, this review uniquely compiles a diverse number of topics with the aim to instigate new research ventures on the design of power transfer systems for IMDs, and specifically LVADs.

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Electrical power to run ventricular assist devices using the Free-range Resonant Electrical Energy Delivery system

Abstract: The large operating range of FREE-D system extends the use of VAD for nearly all patients without being affected by the depth of the implanted pump. Our in-vivo results with the FREE-D system may offer a new perspective on quality of life for patients supported by implanted device.

Cited by 19 publications

References 15 publications

Ventricular Assist Device Driveline Infections: A Systematic Review

Ventricular Assist Device Driveline Infections: A Systematic Review

Battery‐Free and Wireless Technologies for Cardiovascular Implantable Medical Devices

Systems of conductive skin for power transfer in clinical applications

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