Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Design for a constant peak current defibrillator.

J W Machin1, J Brownhill, A Furness

  • 1Department of Electrical and Electronic Engineering, Staffordshire Polytechnic, England.

IEEE Transactions on Bio-Medical Engineering
|July 1, 1990
PubMed
Summary

A novel damped sine wave defibrillator can maintain constant peak discharge current across varying patient thoracic impedance. This is achieved by dumping excess stored energy, ensuring consistent current delivery for improved defibrillation efficacy.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Efficacy and safety of stereotactic radiosurgery in the management of brain metastases in patients with metastatic melanoma.

The British journal of radiology·2026
Same author

Intratumoural evolutionary landscape of high-risk prostate cancer: the PROGENY study of genomic and immune parameters.

Annals of oncology : official journal of the European Society for Medical Oncology·2017
Same author

The use of mass depletion-mass flux reduction relationships during pumping to determine source zone mass of a reactive brominated-solvent DNAPL.

Journal of contaminant hydrology·2012
Same author

Radiation Therapy Oncology Group. Research Plan 2002-2006. Tumor Utilization Committee.

International journal of radiation oncology, biology, physics·2001
Same author

Thoracic impedance of adult males during defibrillation--a curious discrepancy.

Medical & biological engineering & computing·1987
Same author

Fatty acids in the milk of goats after cessation of lactation.

Comparative biochemistry and physiology. A, Comparative physiology·1986

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Devices
  • Electrical Engineering

Background:

  • Conventional defibrillators struggle to maintain consistent current delivery due to variations in patient thoracic impedance.
  • Optimizing defibrillator performance requires stable current output irrespective of patient factors.

Purpose of the Study:

  • To investigate the theoretical and practical feasibility of a damped sine wave defibrillator capable of constant peak discharge current.
  • To develop a defibrillator that compensates for a wide range of patient thoracic impedance.

Main Methods:

  • Theoretical modeling of a damped sine wave defibrillator circuit.
  • Implementation using excess energy storage and a current-triggered charge dumping mechanism.
  • Incorporation of a larger-than-normal inductance to stabilize current and waveform.

Related Experiment Videos

Main Results:

  • Demonstrated theoretical possibility of constant peak discharge current over a broad impedance range.
  • Practical realization achieved with +/- 6% variation for 95% of a normal patient population.
  • Simulated energy expenditure was lower compared to conventional defibrillators.

Conclusions:

  • The proposed damped sine wave defibrillator design effectively overcomes limitations of varying patient impedance.
  • This technology offers a more reliable and potentially more energy-efficient defibrillation method.