書誌事項
- タイトル別名
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- Liver-elasticity Measuring Device using Foldable Calipers Mechanism for Laparoscopic Surgery
- オリタタミ ノギス キコウ オ モチイタ フククウキョウ カ カンゾウ ダンセイ ケイソク デバイス ノ カイハツ
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<p>As liver is the venous organ, the elasticity is changed by blood distribution in the liver. Surgeons adjust the operation in accordance with the hardness of the liver. In laparoscopic surgery, however, as surgeons cannot touch liver directly, they determine its hardness based on laparoscopic images only. Although the gripping force measuring device for the elasticity measurement of organ intra-operation have been developed, it still has a problem of the jaw gripping shape by pin joints. Jaw griping shape cannot uniformly compress the organ, so there is a problem that the most compressed part of the organ is apt to be damaged. In order to solve this problem, calipers shaped measurement device was developed, though, it is not supposed to be used in laparoscopic surgery. In this study, we aimed to develop a calipers shaped elasticity measuring device it could be used in laparoscopic surgery. It approaches from various directions, and compresses organs uniformly.</p><p>The device was designed to be inserted through a hole of φ12 mm for using the trocar. To apply to the laparoscopic surgery, we applied foldable calipers shaped mechanism. As an evaluation, reproducibility evaluation test, ex vivo and in vivo experiments using swine liver were carried out. Full scale 1.4 N, and the error was less than ±3% in reproducibility evaluation. Further, from comparison of the results of in vivo and ex vivo, we could evaluated the properties of the liver successfully. In the in vivo experiments, the elasticity value measurement of the liver was done within 3 minutes without big problem.</p><p>We have successfully developed a new foldable calipers shaped elasticity measuring device that can be used laparoscopic surgery. We will increase the number of measurements in the in vivo as a future work.</p>
収録刊行物
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- 日本コンピュータ外科学会誌
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日本コンピュータ外科学会誌 19 (1), 27-33, 2017
一般社団法人 日本コンピュータ外科学会
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詳細情報 詳細情報について
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- CRID
- 1390001205510401408
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- NII論文ID
- 130005439709
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- NII書誌ID
- AN1044100X
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- ISSN
- 18845770
- 13449486
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- NDL書誌ID
- 027973859
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- KAKEN
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- 使用不可