Piezoelectricity of chiral polymeric fiber and its application in biomedical engineering
Piezoelectricity of chiral polymeric fiber and its application in biomedical engineering
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DOI：
10.1109/tuffc.2008.746
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发表时间：
2008-05-01
影响因子：
3.6
通讯作者：
Tajitsu, Yoshiro
中科院分区：
文献类型：
--
作者：
Tajitsu, Yoshiro
聚L-乳酸（PLLA）是一种手性聚合物，具有高剪切压电常数。为了实现更高的剪切压电常数，我们将PLLA树脂纺成纤维。我们成功地控制PLLA纤维的压电运动，通过施加直流电压和交流电压，类似于压电致动器的控制。在此实验结果的基础上，我们设计了使用PLLA纤维的导管（PLLA纤维导管）和使用一对PLLA纤维的镊子（PLLA纤维镊子），通过调节施加的电压来控制。然后，使用PLLA纤维镊子或导管，我们成功地取出了小样本，例如血管中的血栓。
Poly-L-lactic acid (PLLA), which is a type of chiral polymer, exhibits a high shear piezoelectric constant. To realize a higher shear piezoelectric constant, we spun PLLA resin into fibers. We succeeded in controlling the piezoelectric motion of a PLLA fiber by applying a dc voltage and ac voltage, similar to the control of a piezoelectric actuator. On the basis of this experimental result, we designed a catheter using a PLLA fiber (PLLA fiber catheter) and tweezers using a pair of PLLA fibers (PLLA fiber tweezers), controlled by adjusting the applied voltage. Then, using the PLLA fiber tweezers or catheter, we successfully picked up and removed small samples, such as a thrombosis in a blood vessel.