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Flow rate monitoring provides an indication for early intervention of vascular graft degradation or failure used in lower limb bypasses and renal haemodialysis. This paper presents an inductively powered implantable blood flow sensing microsystem with bidirectional telemetry capability, which fully integrates the silicon nanowire (SiNW) sensor with tunable(More)
Monitoring blood flow rate inside prosthetic vascular grafts enables an early detection of the graft degradation, followed by the timely intervention and prevention of the graft failure. This paper presents an inductively powered implantable blood flow sensor microsystem with bidirectional telemetry. The microsystem integrates silicon nanowire (SiNW)(More)
This paper describes a closed loop wireless inductive power transfer system for an implantable brain machine interface. The proposed system is designed to ensure optimal power transfer by an off-body unit, battery powered, to an in-body implanted unit while guarantying a minimum transmitted power level for proper operation and a maximum level to avoid brain(More)
BACKGROUND It is important to analyze and compare soft tissue sarcomas periodically so as to update the incidence, the clinical diagnosis, the treatment, and the ongoing research. The present study was conducted to determine the relative frequency of each type of soft tissue sarcoma. METHODS A total of 1118 cases of primary soft tissue sarcomas treated(More)
Wireless powering to implantable biomedical devices is highly desirable due to obviation of batteries or piercing wirings. This paper presents an implantable inductively powered front-end operating at 13.56MHz carrier frequency for biomedical applications, with the capabilities of power transfer, clock extraction and bidirectional command/data(More)
To avoid or minimize postimplantation injury as a result of brain micromotion relative to the skull, a flexible multichannel polyimide (PI) cable was designed and microfabricated for data and power transmission between an intracranial IC recording from a neural probe array and an extracranial IC exchanging power and data wirelessly with an external unit.(More)
BACKGROUND Recent epidemiologic studies have focused on the potential beneficial effects of regional anesthetics, and the differences in cancer prognosis may be the result of anesthetics on cancer biologic behavior. However, the function and underlying mechanisms of lidocaine in hepatocellular carcinoma both in vitro and in vivo have been poorly studied. (More)
This paper describes a 13.56-MHz wireless power recovery system with bidirectional data link for high-compliance-voltage neural/muscle stimulator. The power recovery circuit includes a 2-stage rectifier, 2 LDOs and a high voltage charge pump to provide 3 DC outputs: 1.8 V, 3.3 V and 20 V for the stimulator. A 2-stage time division based rectifier is(More)
— High efficiency is vital for wireless powering link in biomedical implant application. This paper presents the analysis of the overall efficiency from the viewpoint of whole link and two important factors are elaborated. First, the choice of the optimal power carrier frequency should be tradeoff through the whole link, especially with consideration of(More)