| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a needleless syringe capable of achieving a desired depth of injection in an injection target region of a living body, etc. <P>SOLUTION: A projection part and a nozzle part are provided in an ejection part of the needleless syringe. The projection part projects outward so that a prescribed region including an ejection port is in contact with the injection target region when the syringe is used, and has a partition wall having a prescribed thickness. The nozzle part has a plurality of channels including ejection ports formed in the partition wall. The nozzle part is formed so that a pressurized substance to be injected flows into each of the plurality of channels, and so that distances of passage of the substance to be injected along the respective channels are approximately equal to one another. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
