1987 Fiscal Year Final Research Report Summary
Basic studies on Clinical Indications of Waterjet Operating Method
| Project/Area Number |
61480278
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Digestive surgery
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
NISHISAKA Tusyoshi Tokyo University of Agruculture and Technology, Professor, Health scoience Contero,, 保健管理センター, 教授 (40101084)
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| Co-Investigator(Kenkyū-buntansha) |
FUMIO SANO Hokkaido University, 医療技術短期大学部, 教授 (10001687)
SHOUZOH MORI Tohoku University, 医学部, 教授 (70004877)
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| Project Period (FY) |
1986 – 1987
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| Keywords | ウォータージェット / 手術装置 / 出血 |
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| Research Abstract |
We have developed watirjet operating apparatus and found suitable for surgical applications late in 1982. Though the hydromechanical function of the prototype using a plunger pump is satisfactory, this has many drawback. To improve those problems, we have developed a new apparatus using a roller pump for clinical uses. This new apparatus is much more practical than prototype with respect to sterilization of the whole waterjet system. After the investigation on acute and chronic animal experiments using this nex system, the followings became clear.
1. The apparatus enabled cutting and resection of parenchymatous organs and tissues. Hemorrhage during operation were reduced comparing to conventional method.
2. In liver operation, well stripped strings and fine vasculatures up to 0.25 mm bridged between the cut portion of the tissues. After ligation and coagulation of these bridge, tissue are easily cut Without bleeding.
3. The apparatus abraded tissues and organs. Vasculatures, nerves and lympatic nodes are easily separated from surrounding tissue and organ.
4. Waterjet stream washed and cleaned the tissue surafce of operating area.
5. There are no thermal induced tissue necrosis which is observed in electrocautery and laser scalpel operation.
6. Wound healing of the tissues surfaces are earlier of almost the same as was seen in conventional method.
Those useful characters seem to offer a new operating modalities for various kinds of operations.
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