Design and Development of Low-Cost Electronic Stethoscope Trainer Kit
Auscultation is the medical term for using a stethoscope to listen to the internal sounds of the body. Auscultation is performed on lungs, heart and abdomen of a patient during his/her medical tests. Auscultation has been a very important in examining the circulatory and respiratory systems as well as the gastrointestinal system (bowel sounds). Auscultation provides vital diagnostic clues and methodology for the early diagnosis of any cardiac abnormalities and respiratory disorders. Most heart diseases are associated with and reflected by the sounds that the heart produces. Traditional auscultation requires substantial clinical experience and good listening skills. The motive of this paper is to develop an electronic stethoscope trainer kit by using basic electronic components which can amplify the heartbeats of an individual with reduced background ambient noise, thereby producing a crystal-clear heartbeat sound for hearing across the earphones. With the help of this device, multiple members can hear the auscultated heartbeats of an individual and analyze them. Results of this project indicate that very minimal amount of noise was present at the earphone end and the enhancement of the heartbeat sound was heard with great intensity. The project’s conclusion indicates that due to the non-complexity of the system, a non-medical profession can use this low-cost electronic stethoscope without any difficulty.
KeywordsAuscultate Sallen-key Chest piece Zobel filter AFO DSO Butterworth Microphone
We like to express our special thanks and gratitude to Dr. K. S. Shivapraksha, Associate Professor, and Mr. Anil Kumar Bhat, Assistant Professor, Nitte Mahalinga Adyanthaya Memorial Institute of Technology, Nitte, Karnataka for providing us all the help, support, ideas and the platform to design our system. We also appreciate all the support given by our lab assistants to make this project work successfully.
- 1.Fagbohun OO (2015) A versatile low-cost electronic stethoscope designGoogle Scholar
- 2.Jinothkumar S (2010) Digital stethoscope: a new approach to know and hear heart beat and heart frequency rate. J Adv Res Ideas Innov Technol 3(6)Google Scholar
- 3.Jamar K, Scherer M, Weis T, Anderson M (2011) Electronic stethoscope, University of Wisconsin—Madison Department of Biomedical EngineeringGoogle Scholar
- 4.Leng S, Tan RS, Chai KTC, Wang C, Ghista D, Zhon L Electronic stethoscope, 10 July 2015Google Scholar
- 5.Parmar Hardik R (2013) Design and development of a wireless electronic stethoscope using DSPGoogle Scholar
- 6.Gayakwad RA (2004) Op-amps and linear integrated circuits, PHI, 4th ednGoogle Scholar
- 7.Carter B, Mancini R (2017) Opamps for everyone, 5th ednGoogle Scholar
- 8.Radhakrishna Rao K (2010) Analog circuits and systems: active filters, NPTELGoogle Scholar
- 9.Marshall Leach W Jr (2001) Introduction to electroacoustics and audio amplifier design, 2nd edn. Kendall/HuntGoogle Scholar