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Linear skeletal muscle ventricle: a pilot study

Y Kaneko1, A Furuse

  • 1Department of Cardiothoracic Surgery, Faculty of Medicine, University of Tokyo, Japan.

Artificial Organs
|February 1, 1996
PubMed
Summary
This summary is machine-generated.

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Researchers created a novel skeletal muscle ventricle (LSMV) using latissimus dorsi muscle (LD) linear contraction. This innovative device shows promise for cardiac assistance, demonstrating measurable stroke work and power output in canine studies.

Area of Science:

  • Biomedical Engineering
  • Cardiovascular Research
  • Surgical Innovation

Background:

  • Heart failure necessitates advanced mechanical circulatory support.
  • Existing artificial hearts face challenges with durability and biocompatibility.
  • Skeletal muscle-powered devices offer a potential biological alternative.

Purpose of the Study:

  • To develop and evaluate a novel skeletal muscle ventricle (LSMV) for cardiac assistance.
  • To assess the functional performance of the LSMV in an acute experimental setting.

Main Methods:

  • A new LSMV design utilizing the latissimus dorsi muscle (LD) for linear contraction was engineered.
  • The device consists of two bellows, valves, and a connector, actuated by the LD's caudal tendon.
  • Acute canine experiments were conducted to measure the LSMV's performance.

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Main Results:

  • The LSMV successfully generated blood flow through the coordinated action of bellows and valves.
  • Measured stroke work was 0.214 J and power output was 0.135 W at a filling pressure of 4.3 mm Hg.
  • LD contraction led to blood ejection from the larger bellows and filling of the smaller bellows.

Conclusions:

  • The developed LSMV demonstrates feasibility as a cardiac assist device.
  • The study provides initial quantitative data on the performance of a skeletal muscle ventricle.
  • Further research is warranted to optimize the design and assess long-term efficacy.