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WATER JET SPRAY NOZZLE, WATER JET SPRAY DEVICE, GASTROINTESTINAL TRACT CLEANING DEVICE, AND GASTRIC WALL CLEANING DEVICE 新技術説明会

外国特許コード F130007672
整理番号 S2012-0434-N0
掲載日 2013年10月17日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2013JP053480
国際公開番号 WO 2013/122125
国際出願日 平成25年2月14日(2013.2.14)
国際公開日 平成25年8月22日(2013.8.22)
優先権データ
  • 特願2012-029019 (2012.2.14) JP
発明の名称 (英語) WATER JET SPRAY NOZZLE, WATER JET SPRAY DEVICE, GASTROINTESTINAL TRACT CLEANING DEVICE, AND GASTRIC WALL CLEANING DEVICE 新技術説明会
発明の概要(英語)

Provided is a water jet spray nozzle, a water jet spray device, a gastrointestinal tract cleaning device, and a gastric wall cleaning device, whereby the cleaning performance with respect to water pressure can be increased, and when used to clean the gastric wall, gastric mucus can be effectively removed without damaging stomach tissue such as the gastric mucosa. A water jet spray nozzle (11) comprising: a flow path (11a) that includes, in order toward the distal end, a small-diameter portion (21) having an inner diameter that decreases from the upstream side, an expanded portion (22) having an inner diameter larger than that of the small-diameter portion (21), and a jet orifice (23) having an inner diameter smaller than that of the expanded portion (22). When water flows at a pressure of 0.2 to 0.6 MPa to the flow path (11a), the water collects in the expanded portion (22) and a cavitation bubble is generated heading from the small-diameter portion (21) toward the expanded portion (22). The inner diameter of the small-diameter portion (21) is 0.5 to 0.7 mm, and the inner diameter of the jet orifice (23) is 1 to 1.3 times larger than the inner diameter of the small-diameter portion (21).

  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • TOHOKU UNIVERSITY,
  • SHOWA UNIVERSITY
  • 発明者(英語)
  • SOYAMA HITOSHI,
  • AMI KATSUNORI,
  • YAMAMOTO MATSUO
国際特許分類(IPC)
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