发明名称 |
WATER JET SPRAY NOZZLE, WATER JET SPRAY DEVICE, CLEANING METHOD USING WATER JET, GASTROINTESTINAL TRACT CLEANING DEVICE, AND GASTRIC WALL CLEANING DEVICE |
摘要 |
A water jet spray nozzle has a flow path including, from the upstream side to the end of the flow path, a small-diameter portion having a small inside diameter, an expanded portion having a larger inside diameter than the small-diameter portion, and a jet orifice having a smaller inside diameter than the expanded portion. The water jet spray nozzle is configured such that water passing through the flow path with a pressure of 0.2 to 0.6 MPa is retained in the expanded portion to as to generate cavitation bubbles from the small-diameter portion to the expanded portion. The inside diameter of the small-diameter portion § is 0.5 to 0.7 mm while the inside diameter of the jet orifice is 1 to 1.3 times larger than that of the small-diameter portion. |
申请公布号 |
US2014378947(A1) |
申请公布日期 |
2014.12.25 |
申请号 |
US201314378141 |
申请日期 |
2013.02.14 |
申请人 |
TOHOKU UNIVERSITY ;SHOWA UNIVERSITY |
发明人 |
Soyama Hitoshi;Ami Katsunori;Yamamoto Matsuo |
分类号 |
A61M3/02;A61B1/12 |
主分类号 |
A61M3/02 |
代理机构 |
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代理人 |
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主权项 |
1. A water jet spray nozzle having a flow path including, from an upstream side to an end of the flow path, a small-diameter portion having a small inside diameter, an expanded portion having a larger inside diameter than the small-diameter portion, and a jet orifice having a smaller inside diameter than the expanded portion,
the water jet spray nozzle being configured such that water passing through the flow path with a predetermined pressure is retained in the expanded portion so as to generate cavitation bubbles from the small-diameter portion to the expanded portion. |
地址 |
Sendai-shi, Miyagi JP |