| 摘要 |
PURPOSE: To prevent an organism from being traumatized, and prevent generation of an inconvenient noise by arranging a single or more side part opening parts having a valve actuated by negative pressure in a medical aspirator. CONSTITUTION: In an aspirator 1 which sucks saliva in a dental treatment or sucks and disposes of blood, a tissue section, bone powder or the like at surgery together with a cleaning liquid such as salt water and a Ringer solution injected at operation time, a single or more vertical holes 3 covered with foil 4 having a slit 6, are arranged in a vicinity position of a suction port 2 arranged in a tip part. The foil 4 to cover an area of the vertical holes 3 of a wall 5 of the aspirator 1 is formed by, for example, die-cast or injection molding together with a plastic part simultaneously with manufacturing time, and this is made to function as a valve to be opened when negative pressure not less than a prescribed value acts.
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