This creation is a kind of related bloodletting device of what,System include a syringe needle installation component,One acupuncture treatment control switch and a pneumatics supply unit； Between syringe needle installation component and acupuncture treatment control switch,And with piping connection between acupuncture treatment control switch and pneumatics supply unit,And couple the pneumatics supply unit and the acupuncture treatment control switch mutually with timer； Accordingly,When bloodletting treatment to be carried out,User is that force is opened by the acupuncture treatment control switch of pulling,And when the unlatching of the what acupuncture treatment control switch,It is synchronous averaging timer actuation,The syringe needle installation component is given to control the pneumatics supply unit interrupted output pneumatics by the timer,So that in the syringe needle installation component under the blood letting needle what of the installing pneumatics supply unit interrupted output pneumatics,The automatic actor for carrying out repetitiousness projection acupuncture treatment or retraction and not having an acupuncture treatment.本創作係有關於一種放血裝置，係包括一針頭安裝構件、一扎針控制開關及一空壓供應單元；針頭安裝構件與扎針控制開關之間，以及扎針控制開關與空壓供應單元之間以管路連接，並使該空壓供應單元及該扎針控制開關與計時器相耦接；據此，當欲進行放血治療時，使用者係施力按掣該扎針控制開關開啟，而於該扎針控制開關開啟時，係同步啟動計時器作動，以由該計時器控制該空壓供應單元間歇輸出空壓予該針頭安裝構件，以使該針頭安裝構件內裝設之放血針頭於該空壓供應單元間歇輸出空壓下，自動進行反覆突伸扎針或縮入不扎針之動作者。
