Frequency characteristics of pressure transducer kits with inserted pressure-resistant extension tubes
Frequency characteristics of pressure transducer kits with inserted pressure-resistant extension tubes
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插入耐压延长管的压力传感器套件的频率特性
DOI：
10.1007/s10877-016-9854-4
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
Yokoyama Takeshi
中科院分区：
文献类型：
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作者：
Fujiwara Shigeki;Mori Satoshi;Tachihara Keiichi;Yamamoto Takeshi;Yokoe Chizuko;Imaizumi Uno;Morimoto Yoshinari;Miki Yoichiro;Toyoguchi Izumi;Yoshida Kazu-ichi;Yokoyama Takeshi
动脉血压的准确监测对心血管管理具有重要意义。然而，压力传感器套件的频率特性受耐压管的长度的影响。到目前为止，很少有研究解决插入耐压延长管（耐压延长管（ET）电路）的压力传感器套件的频率特性。在这项研究中，我们检查ET电路的压力传感器套件的频率特性的观点。使用DT 4812 J换能器套件（长度150 cm; Argon Medical Devices，TX，USA）。准备了三个原始ET回路，其中DT 4812 J的耐压管延伸有30 cm长的耐压管（180 ET回路）、60 cm长的耐压管（210 ET回路）和90 cm长的耐压管（240 ET回路）。作为本研究的一部分，对这些电路进行了评价。原始DT 4812 J电路的固有频率为45.90 Hz，而阻尼系数为0.160。对于180 ET电路，自然频率和阻尼系数分别为36.4 Hz和0.162。对于ET 210电路，自然频率和阻尼系数分别为30.3 Hz和0.175。对于ET 210电路，自然频率和阻尼系数分别为25.3 Hz和0.180。结果发现，延长电路后，固有频率急剧下降，而阻尼系数略有增加。当需要扩展压力传感器套件时，我们应该特别注意固有频率的主要下降，这可能会影响压力监测。
The accurate monitoring of arterial blood pressure is important for cardiovascular management. However, the frequency characteristics of pressure transducer kits are influenced by the length of the pressure-resistant tube. To date, there have been few studies addressing the frequency characteristics of pressure transducer kits with inserted pressure-resistant extension tubes (pressure-resistant extension tube (ET) circuits). In this study, we examine ET circuits from the viewpoint of the frequency characteristics of pressure transducer kits. DT4812J transducer kits (length 150 cm; Argon Medical Devices, TX, USA) were used. Three original ET circuits were prepared, with the pressure-resistant tube of the DT4812J being extended with a 30-cm length of pressure-resistant tube (180ET circuit), a 60-cm length of pressure-resistant tube (210ET circuit), and a 90-cm length of pressure-resistant tube (240ET circuit). Each of these circuits was evaluated as part of this study. The natural frequency of the original DT4812J circuit was 45.90 Hz while the damping coefficient was 0.160. For the 180 ET circuit, the natural frequency and damping coefficient were 36.4 Hz and 0.162, respectively. For the ET210 circuit, the natural frequency and damping coefficient were 30.3 Hz and 0.175, respectively. For the ET210 circuit, the natural frequency and damping coefficient were 25.3 Hz and 0.180, respectively. As a result of extending the circuit, it was found that the natural frequency decreased drastically, while the damping coefficient increased slightly. When the extension of a pressure transducer kit is required, we should pay careful attention to the major decrease in the natural frequency, which may influence the pressure monitoring.