SYRINGE AND INJECTION UNIT

To provide a syringe and an injection unit which can be easily handled and have high safety properties.SOLUTION: A syringe comprises: a drive part including, a first electrode, a second electrode, and a porous body held by the first and second electrodes; a front channel part having one end to which a needle is connected, the other end which is coupled to an end of the drive part on the first electrode side, and having a first channel; and a rear channel part having one end which is coupled to an end part of the drive part on the second electrode side, and having a second channel. The syringe includes: a power source part including one or more capacitors, and applying a voltage between the first and second electrodes. The syringe has a cylindrical case for storing at least, the drive part, the front channel part, and the rear channel part. The drive part has a drive channel for communicating the first channel with the second channel, and is operated by electric charge accumulated in the capacitors.SELECTED DRAWING: Figure 1 【課題】操作が容易で且つ安全性の高い注射器及び注射ユニットを提供すること。【解決手段】第１電極、第２電極、及び第１電極と第２電極とで挟まれた多孔質体を含む駆動部と、一端部に注射針が連結され、他端部が駆動部の第１電極側の端部に接続され、第１流路を有する前流路部と、一端部が駆動部の第２電極側の端部に接続され、第２流路を有する後流路部と、を有する注射器。注射器は、１又は複数のコンデンサを含み、第１電極と第２電極との間に電圧を印加する電源部を有する。注射器は、少なくとも駆動部と前流路部と後流路部とを収容する筒状のケースを有する。駆動部は、第１流路と第２流路とを連通する駆動流路が形成されており、コンデンサに蓄えられた電荷により動作するものである。【選択図】図１