A non-reusable device for collecting bodily fluids such as vascular blood from a patient, the device being configured for example to receive a blood collection tube and having a retractable needle attached to a rearwardly biased needle holder that is constrained prior to needle retraction by a rotatably mounted lug ring and that is released during retraction by depressing a trigger pivotably connected to the body of the device to rotate the lug ring, whereby the needle holder is driven into a retraction cavity disposed inside the trigger and the front tip of the needle is retained inside the body of the device.一種用來從病患收集諸如血管血液之體液之不可再用裝置，該裝置配置來例如收容血液收集管，並具有附接至向後偏壓之針夾持具之可縮回針，該針夾持具在針縮回之前受到可旋轉安裝之突耳環拘束，並在縮回期間藉由按壓樞接至該裝置之本體之觸發器以旋轉該突耳環，予以釋放，俾該針夾持具被驅動進入設在該觸發器內部之縮回腔，且該針之前針頭被保持於該裝置之該本體內部。
