Chronic implantation of a skeletal muscle energy convertor for cardiac assist devices: a preliminary report.
Chronic implantation of a skeletal muscle energy convertor for cardiac assist devices: a preliminary report.
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用于心脏辅助装置的骨骼肌能量转换器的长期植入:初步报告。
DOI:
10.1097/00002480-199809000-00091
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发表时间:
1998
期刊:
影响因子:
--
通讯作者:
Hill,JD
中科院分区:
文献类型:
--
作者:
Reichenbach,SH;Gustafson,KJ;Khazalpour,KM;Farrar,DJ;Hill,JD
An efficient energy convertor capable of driving a variety of cardiac assist devices is being developed in goats. Muscle work in a linear configuration is converted to hydraulic energy and transmitted to an external test system that controls muscle loads during shortening contractions. This investigation focuses on the variation of muscle characteristics and optimal power output during muscle conditioning. The energy convertor was mounted on the rib cage, the latissimus dorsi insertion reattached to the device, and percutaneous hydraulic lines exited near the spine. Following device, stimulator, and intramuscular electrode implantation, a progressive conditioning protocol was initiated. Weekly biomechanical muscle characterization was performed in the conscious animal, with single twitch and tetanic contractions performed under isometric and isotonic conditions. The characterization data provide a measure of available power, as well as inputs, for a computer simulation that predicts optimal muscle power output and operating conditions. These ongoing implants provide insight into the available muscle power and suggest an implantable energy convertor is feasible. Development of an energy convertor is an important step toward tether free skeletal muscle powered cardiac assist. These studies will be expanded in number and duration to further investigate the effects of conditioning and identify improvements in device development.
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DOI:
--
发表时间:
1989
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Taylor,CS;Kent,UM;Fleming,PJ
通讯作者:
Fleming,PJ
影响因子:
3.3
作者:
G. Falkensammer;R. Fischer‐Colbrie;K. Richter;H. Winkler
通讯作者:
H. Winkler
影响因子:
3.9
作者:
E. Slater;S. Zaremba;R. Hogue
通讯作者:
R. Hogue
影响因子:
4.7
作者:
EIDEN, LE;IACANGELO, A;AUNIS, D
通讯作者:
AUNIS, D
DOI:
10.1042/bj1180303
发表时间:
1970
期刊:
The Biochemical journal
影响因子:
--
作者:
H. Winkler;H. Hörtnagl;A. D. Smith
通讯作者:
A. D. Smith