Sökning: "Implantable"

Visar resultat 11 - 15 av 80 avhandlingar innehållade ordet Implantable.

  1. 11. A Novel Bone Conduction Implant System

    Författare :Hamidreza Taghavi; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sound radiation; amplitude modulation; low-power systems.; bone conduction implant; feedback; bone anchored hearing aid; RF power amplifier; gain headroom; implantable transducer; wireless power and data transmission; RF power and data link;

    Sammanfattning : Bone conduction is the process by which an acoustic signal vibrates the skull bones to stimulate the cochlea. Patients with pure conductive hearing loss, mixed hearing loss, and single sided deafness are sometimes poorly rehabilitated by conventional air conduction hearing aids due to for example the functionality losses in the middle ear. LÄS MER

  3. 12. Studies On Design of Near-Field Wireless-Powered Biphase Implantable Stimulators

    Författare :Yonatan Habteslassie Kifle; Jacob Wikner; Atila Alvandpour; Sebastian Bader; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Portable and implantable electronics are becoming increasingly important in the healthcare sector. One of the challenges is to guarantee stable systems for longer periods of time. If we consider applications such as electrical nerve stimulation or implanted ion pumps, the requirements for, e.g. LÄS MER

  4. 13. Implantable bioartificial hybrids for targeted therapy in the central nervous system

    Författare :Lars U Wahlberg; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The rapid increase in the understanding of the CNS at the molecular level has brought us new knowledge and tools to attempt to locally manipulate the CNS microenvironment and thereby introduce reparative and ablative molecular therapeutic approaches in focal areas of the CNS. This targeted therapy will require neurosurgical intervention for the injection and implantation of cells, viral vectors, or drug release systems. LÄS MER

  5. 14. Implantable devices in heart failure : studies on biventricular pacing and continuous hemodynamic monitoring

    Författare :Frieder Braunschweig; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Implantable devices; congestive heart failure; biventricular pacing; hemodynamic monitoring; ambulatory; hospitalizations; positron emission tomography; stress; blood flow; loop diuretics; natriuretic peptides; hemodynamics.;

    Sammanfattning : Chronic heart failure is a highly symptomatic syndrome associated with increasing prevalence, frequent hospital admissions and high treatment costs. Despite recent advances in drug therapy, morbidity and mortality are still high. LÄS MER

  7. 15. Continuous ambulatory hemodynamic monitoring with an implantable system : the feasibility of a new technique

    Författare :Åke Ohlsson; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :heartfailure; hemodynamic monitoring; implantable; oxygen saturation; pressure; ambulatory; right ventricle; dPdt; long-term; sensor; cardiac output.;

    Sammanfattning : Patients with chronic heart failure constitute an increasingly large group. Despite recent therapeutic improvements, these patients have a poor prognosis. LÄS MER