The laser hot-balloon catheter: Novel interventional catherter system with short term heating duration
The laser hot-balloon catheter: Novel interventional catherter system with short term heating duration
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激光热球导管：具有短期加热时间的新型介入导管系统
DOI：
10.2530/jslsm1980.17.supplement_185
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
K. Takeuchi
中科院分区：
文献类型：
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作者：
T. Arai;M. Yoshikawa;M. Kikuchi;Takayuki Miyake;M. Sakurada;K. Mizuno;A. Utsumi;K. Takeuchi
介绍了激光热气球跟踪器的基本概念和性能。为了克服血管周围过度的热损伤，这是限制热装置应用的主要原因，我们实现了10至15秒的短加热时间，在球囊中具有均匀的温度分布。我们采用细光纤传输激光作为热源，在气球上获得足够的热功率，以实现快速升温。然后使用激光能量加热灌注在球囊中的造影剂。加热的造影剂液体的生产对于获得均匀的温度分布是有用的。此外，在激光关闭后灌注这种液体会导致温度突然下降。我们利用上述设计开发了新型热球囊导管。我们使用动物模型在体外和体内研究了这种独特的球囊血管成形术。所获得的结果表明，我们的短时间加热概念明显大大改善了热血管成形术的慢性期通畅率。
Tsunenori Arai, Miya Yoshikawa, Makoto Kikuchi, Takayuki Miyake', Masami Sakurada', Kyo-ichi Mizuno2, Atsushi Utsumi', and Kiyoshi Takeuchi4 Abstract The basic concept and performance of the laser hot-balloon caterter are presented. To overcome excessive thermal damage in the vessel surroundings, which is major reason to restrict thermal device applications, we realize short heating time of 10 to 1 5s with uniform temperature distribution in the balloon. We employed thin fiber delivered laser enegry as a heat source to obtain sufficient heat power at the balloon t o attain rapid temperature rise. The laser energy then was used to heat contrast medi um which was irrigated in the balloon. The production of heated contrast medium liquid is useful to obtain uniform temperature distribution. Moreover, the irrigation of this liquid after laser shut-off produced sudden decrease of the temperature. We developed novel thermal balloon catheter using above mentioned design. We examined this unique balloon angioplasty using animal model in vitro and in vivo. The obtained results indicated that our short time heating concept obviously drastically improve chronic phase patency in thermal angioplasty.