The invention relates to a bone cement syringe, which comprises an outer cylinder with a cutting groove, an injection unit movable in the outer cylinder, the injection unit comprising an inner tube and an outer tube, and the inner tube has a first hollow area, and between the inner tube and the outer tube there is a second hollow area, and on the outer tube there is a catheter located in the cutting groove and connected with the second hollow area And a thrust unit which is arranged in the first hollow area and abuts the bottom end of the outer cylinder.Thus, the bone cement can be filled in the first hollow area, and the injection unit can be pulled to make the thrust unit inject the bone cement into the bone of the surgical patient. At the time of injection, the blood water and air in the bone can be sucked out from the second hollow area by using the air compressor together with the catheter. When the blood water and air are sucked out, the bone cement can be inhaled into the bone due to the pressure difference at the same time. Therefore, the structure design is simple, the operation is easy and labor-saving, and the effect of rapid injection is achieved.本創作係一種骨水泥注射器，其包含有一具有剖槽之外筒；一活動設於外筒內之注射單元，該注射單元係包含有一內管與一外管，而該內管係具有一第一中空區，且該內管與外管之間係具有一第二中空區，並於該外管上係設有一位於剖槽內且連通第二中空區之導管；以及一活動設於第一中空區內且抵靠於外筒底端之抵推單元。藉此，可將骨水泥填充於第一中空區內，並拉動注射單元使抵推單元將骨水泥注射進入手術患者之骨骼內，且於注入時一併利用空壓機配合導管而將骨骼內之血水與空氣自第二中空區吸出，當血水與空氣被吸出時，則同時因壓力差而使骨水泥被吸入骨骼內，本創作因此結構設計簡單、操作容易且省力，並達到快速注射之功效。
