Experimental Study of Adjustable Pulmonary Artery Banding Device

가변성 폐동맥 협착기구의 실험적 연구

  • 홍유선 (연세대학교 심장혈관센타 심장혈관외과, 연세대학교 의과대학 심장혈관연구소) ;
  • 박영환 (연세대학교 심장혈관센타 심장혈관외과, 연세대학교 의과대학 심장혈관연구소)
  • Published : 1997.08.01

Abstract

We developed a subcutaneously adjustable new pulmonary artery banding device which can be easily tightened or released in patients with unstable postoperative hemodynamics. The banding device consists of stainless spring which is enveloped with PTFE, nd polyvinyl catheter(5F). And the adjuster consists of another polyvinyl tube with forming cap. We mark transluscent polyvinyl tube 1mm each in length. 6 dogs weighing 15 to 25 kg underwent banding of descending thoracic aorta with the device. At postoperative 1 and 2 day, the device was effectively banded and released. Even 3 months later, we noted effective banding with some degree of vessel injury. The preliminary animal study suggests that this new device may be applicable in patient with excessive pulmonary blood flow.

폐동맥협착을 시행한 환아에서 수술직후 변화하는 혈역학에 대응하기 위하여 피하조직에 위치시켜 쉽게 조절할 수 있는 기구를 개발하였다. stainless steel wire를 이용하여 스프링을 만든후 이것의 표면을 PTFE로 덮은 형태로 제작하였으며 스프링 내부로 wire를 통과시켜 이것을 올가미 형식으로 죄는 방법으로 협착을 할 수 있게 하였으며 협착의 정도를 피하조직으로 통하는 투명한 tube에 1mm간격으로 표시하여 알수 있게 하였다. 6마리의 개의 하행대동맥에 협착을 시행하였다. 수술후 1,2일째에도 이완과 협착을 효과적으로 유도 할수 있었으며 3개월후 어느정도의 혈관손상은 있었으나 큰 협병증 없이 유지함을 보였다. 비록 실험적인 연구이지만 인체에 삽입할수 있는 재료로 쉽게 기구제작이 가능하며 앞으로 피하를 열고 조절가능한 폐동맥협착술에 이용할 수 있으리라 생각된다.

Keywords

References

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