The design and analysis of a ventricular actuating mechanism for a cardiac prosthesis

From a review of the many and varied attempts to date to design a successful cardiac prosthesis, it was shown that 1) every attempt to design a ventricular actuating mechanism (the crucial element in a cardiac prosthesis) has failed to satisfy one or more of the design requirements and has thus resulted in a maximum survival time for an animal on a cardiac prosthesis of 247 hours and, 2) by combining the operating principles of two previously developed actuating mechanisms (spring-driven and rotating shaft-driven), a successful design could be the possible result. A description of the design and construction of a prototype of such a hybrid configuration was next presented. The mechanism presented in the study was then briefly evaluated with respect to its ability to 1) self-regulate its pump output and, 2) produce a physiological aortic pressure/time waveform. Results of the study demonstrated that the pump was capable of producing a quasi-physiological pressure/time waveform. Self regulatory ability was proven to be ineffective.

Name thesis:degree_name

Master of Science

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Mechanical Engineering

Department dc:contributor.department

Mechanical Engineering

Grantor dc:publisher

Virginia Polytechnic Institute and State University

Year dc:date.issued

1974

Author dc:creator

• Peterson, Ronald Stewart

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en_US

Handle dc:identifier.uri

http://hdl.handle.net/10919/54846

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/54846