Muscle contraction control by intramuscular pressure monitoring

Details Muscle contraction control by intramuscular pressure monitoring Muscle contraction control by intramuscular pressure monitoring

A - Human Necessities

61

M

A61M 1/12 (2006.01) A61M 1/10 (2006.01)

Patent

CA 2072131

2072131 9108007 PCTABS00005 A technique for monitoring the performance of a skeletal muscle (22) used in a cardiac assist system. The skeletal muscle is surgically wrapped about the heart (100), the descending aorta (102), or a chamber connected in series with or parallel to the descending aorta (102) to provide direct assistance when electrically stimulated to correspond with naturally or artificially paced heart contractions. The skeletal muscle (22) must be conditioned to perform constant contraction/relaxation within the range of normal heart rates. This conditioning occurs over a length of time which is too long to be directly managed by medical personnel in a sterile environment except experimentally. The present invention provides apparatus and techniques for managing the conditioning process automatically. In the preferred mode a pressure transducer (106) is implanted within the skeletal muscle (22), producing electrical signals enabling a pulse generator (36) to measure the timing and extent of contraction and relaxation of the skeletal muscle (22).

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