TY - JOUR
T1 - Survey of blood pump diaphragm damage in the NIPRO-ventricular assist device
AU - Kashiwa, Koichi
AU - Nishimura, Takashi
AU - Nakahata, Aoi
AU - Momose, Naoki
AU - Umeda, Chinori
AU - Kubo, Hitoshi
AU - Tamai, Hisayoshi
AU - Kinugawa, Koichiro
AU - Adachi, Hideo
AU - Yamaguchi, Atsushi
AU - Yambe, Tomoyuki
AU - Katohgi, Toshiyuki
AU - Kyo, Shunei
AU - Ono, Minoru
PY - 2012/12
Y1 - 2012/12
N2 - We surveyed the incidence of blood pump diaphragm damage (rupture or crack) in the NIPRO-ventricular assist device (VAD). In the cases in which rupture or suspected blood pump crack was detected, we disassembled the pumps to visually check the condition of the diaphragm after replacement or use. Of 366 blood pumps surveyed, diaphragm damage was observed in 2.7 %. The duration of use of the blood pumps with diaphragm damage was significantly longer than that of pumps without damage. The incidence of diaphragm damage increased with longer duration of use. On the basis of these findings, blood pump diaphragm damage in the NIPRO-VAD may be associated with duration of use. However, some blood pumps were used for prolonged periods without diaphragm damage. All blood pumps with damage had a crack in the diaphragm on the air chamber side near the diaphragm-housing (D-H) junction. Cracks were not found in any specific part of the diaphragm. In blood pumps with diaphragm rupture, the crack had a through-hole reaching the blood-contacting surface. Although we were unable to identify the causes of the cracks, it is suggested that when a crack appears in the diaphragm it will gradually expand and eventually lead to rupture. If a crack is detected in a blood pump, we advocate replacing the pump before it grows. When the NIPRO-VAD is used, it is necessary to keep in mind that blood pump diaphragm damage may occur.
AB - We surveyed the incidence of blood pump diaphragm damage (rupture or crack) in the NIPRO-ventricular assist device (VAD). In the cases in which rupture or suspected blood pump crack was detected, we disassembled the pumps to visually check the condition of the diaphragm after replacement or use. Of 366 blood pumps surveyed, diaphragm damage was observed in 2.7 %. The duration of use of the blood pumps with diaphragm damage was significantly longer than that of pumps without damage. The incidence of diaphragm damage increased with longer duration of use. On the basis of these findings, blood pump diaphragm damage in the NIPRO-VAD may be associated with duration of use. However, some blood pumps were used for prolonged periods without diaphragm damage. All blood pumps with damage had a crack in the diaphragm on the air chamber side near the diaphragm-housing (D-H) junction. Cracks were not found in any specific part of the diaphragm. In blood pumps with diaphragm rupture, the crack had a through-hole reaching the blood-contacting surface. Although we were unable to identify the causes of the cracks, it is suggested that when a crack appears in the diaphragm it will gradually expand and eventually lead to rupture. If a crack is detected in a blood pump, we advocate replacing the pump before it grows. When the NIPRO-VAD is used, it is necessary to keep in mind that blood pump diaphragm damage may occur.
KW - Crack
KW - Diaphragm
KW - Rupture
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U2 - 10.1007/s10047-012-0657-1
DO - 10.1007/s10047-012-0657-1
M3 - Article
C2 - 22923169
AN - SCOPUS:84876294338
SN - 1434-7229
VL - 15
SP - 341
EP - 346
JO - Journal of Artificial Organs
JF - Journal of Artificial Organs
IS - 4
ER -