Show simple item record

A NOVEL AIRFLOW CONTROL VALVE FOR USE IN MEDICAL APPLICATIONS

dc.contributor.advisorHristu-Varsakelis, Dimitriosen_US
dc.contributor.authorHitchcock, Kathryn Elizabethen_US
dc.date.accessioned2004-06-04T06:09:46Z
dc.date.available2004-06-04T06:09:46Z
dc.date.issued2004-05-26en_US
dc.identifier.urihttp://hdl.handle.net/1903/1570
dc.description.abstractRapid improvements in digital technology over the last two decades have led to artificial ventilators that drastically improve physicians' ability to measure and control aspects of their patients' breathing. However, the mechanical systems paired with the new digital controllers have not advanced in parallel with them. As a result, mechanical ventilators do not respond sufficiently fast to changes in operating conditions and can injure patients by allowing the air volume or pressure in their lungs to become too high. This thesis describes a new air flow control valve that can be incorporated in existing ventilators to correct this condition. The valve's low mass and short stroke result in rapid full-range motion with low actuator force and travel. These qualities also make the valve well-suited for use as a flow-change mechanism in instruments that measure airway resistance, including the Airflow Perturbation Device (APD). We describe a series of experiments that verify the valve's performance in both ventilator and APD applications.en_US
dc.format.extent294752 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleA NOVEL AIRFLOW CONTROL VALVE FOR USE IN MEDICAL APPLICATIONSen_US
dc.typeThesisen_US
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_US
dc.relation.isAvailableAtUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentMechanical Engineeringen_US
dc.subject.pqcontrolledEngineering, Mechanicalen_US
dc.subject.pqcontrolledEngineering, Biomedicalen_US
dc.subject.pquncontrolledair flowen_US
dc.subject.pquncontrolledmechanical ventilatoren_US
dc.subject.pquncontrolledvalveen_US
dc.subject.pquncontrolledlung injuryen_US
dc.subject.pquncontrolledairway resistanceen_US
dc.subject.pquncontrolledfeedbacken_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record