TY - JOUR
T1 - Safety and biocompatibility of the myosplint system - A passive implantable device that alters ventricular geometry for the treatment of heart failure
AU - Hamner, Chad
AU - Ruth, George
AU - Raffe, Marc
AU - Schoen, Frederick J.
AU - Schaff, Hartzell
PY - 2004/9
Y1 - 2004/9
N2 - A passive implantable device developed for the treatment of heart failure, the Myosplint® System, has demonstrated therapeutic efficacy in a canine model of pacing induced heart failure. The current study sought to demonstrate chronic device safety and biocompatibility, in vivo, in a normal porcine model. Two devices were implanted into each normal, beating heart of 6 juvenile and 15 adult pigs without cardiopulmonary bypass. Animals survived 90 (juvenile and adult) or 180 days (adult only). Serial hematologic and biochemical profiles were evaluated in each pig during the study period. A comprehensive necropsy study was performed in each pig to evaluate device stability, healing response, thromboembolism, hemorrhage, and intravascular hemolysis related to the Myosplint system. Six adult animals died from infectious disease (four) or perioperative (two) complications unrelated to device design or function and were excluded from the final analysis. No clinical, biochemical or pathologic evidence of significant, device related adverse events was observed in surviving animals. The chronic myocardial healing response appeared normal at term, and all devices maintained their structural integrity throughout the study. The Myosplint system was easily implanted in beating hearts and was rapidly incorporated into host tissues without clinically significant morbidity in this porcine model.
AB - A passive implantable device developed for the treatment of heart failure, the Myosplint® System, has demonstrated therapeutic efficacy in a canine model of pacing induced heart failure. The current study sought to demonstrate chronic device safety and biocompatibility, in vivo, in a normal porcine model. Two devices were implanted into each normal, beating heart of 6 juvenile and 15 adult pigs without cardiopulmonary bypass. Animals survived 90 (juvenile and adult) or 180 days (adult only). Serial hematologic and biochemical profiles were evaluated in each pig during the study period. A comprehensive necropsy study was performed in each pig to evaluate device stability, healing response, thromboembolism, hemorrhage, and intravascular hemolysis related to the Myosplint system. Six adult animals died from infectious disease (four) or perioperative (two) complications unrelated to device design or function and were excluded from the final analysis. No clinical, biochemical or pathologic evidence of significant, device related adverse events was observed in surviving animals. The chronic myocardial healing response appeared normal at term, and all devices maintained their structural integrity throughout the study. The Myosplint system was easily implanted in beating hearts and was rapidly incorporated into host tissues without clinically significant morbidity in this porcine model.
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U2 - 10.1097/01.MAT.0000136506.34082.76
DO - 10.1097/01.MAT.0000136506.34082.76
M3 - Article
C2 - 15497382
AN - SCOPUS:4544242194
SN - 1058-2916
VL - 50
SP - 438
EP - 443
JO - ASAIO Journal
JF - ASAIO Journal
IS - 5
ER -