What Is a Blood Warmer?
Venous blood collection is a basic operation skill of nurses. It is often used to provide doctors with a basis for routine examination and rescue during admission. In the past year, disposable vacuum blood collection devices have been used instead of disposable syringes for blood collection.
Single-use vacuum blood collector
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- Chinese name
- Single-use vacuum blood collector
- Foreign name
- Disposable vacuum blood collector
- Venous blood collection is a basic operation skill of nurses. It is often used to provide doctors with a basis for routine examination and rescue during admission. In the past year, disposable vacuum blood collection devices have been used instead of disposable syringes for blood collection.
- Disposable vacuum blood collection needle assembly (hereinafter referred to as blood collection device), the blood collection needle at the top is used to puncture blood vessels, the transparent tube at the end is connected with the tail needle, the outside of the tail needle is wrapped by a rubber tube, and the needle cap is used for puncturing The vacuum blood collection tube uses the negative pressure in the tube to suck blood into the tube. After the whole blood sampler is sterilized with ethylene oxide, it is vacuum packed separately.
- (1) After successful puncture, remove the tail needle cap and directly inject blood into the blood collection tube, which avoids the hemolysis caused by changes in blood constituents and blood cell destruction caused by the injection of blood into the blood collection tube in the traditional method. The test results are more authentic and reliable. The blood collection volume is also more accurate. If the patient needs an infusion, the transparent tube is separated from the tail needle after blood collection and then connected to the infusion set, so that the infusion can be performed, which avoids the pain caused by re-puncture of the infusion after the blood collection and also reduces the workload of the nursing accordingly. (2) The degree of sterility is high, the probability of blood contamination is small, and the interference with the test results is small. (3) The lancet is easy to fix. In the past, blood collection by syringes was unavoidable, which was very unfavorable to fixation, which easily caused the needle to pierce the blood vessels and failed blood collection. The disposable vacuum blood collection device can reduce the occurrence of such problems. (4) In the past, the amount of blood to be collected must be calculated before blood collection, and then a suitable syringe should be selected. The blood collection device does not need to calculate the amount of blood collection. As long as the test tube is prepared according to the inspection items, the tail needle is inserted into the test tube in succession Within just a few minutes, effectively saving time. (5) Save costs and reduce the burden on patients. Newly admitted patients in our department often take a large amount of blood during admission. In the past, a 20ml syringe was used, but because the 20ml syringe used a 12-gauge needle, which caused great damage to the patient, it was generally replaced with a 7-gauge needle. 10ml or 5ml syringes cause waste and increase the patient's financial burden; the current No. 7 needles of blood collection needles can be directly punctured, and such problems will no longer occur after use. (6) Increase the success rate of blood collection. In the past, the blood collection needle was used to puncture blood vessels and the needle that was inserted into the test tube. The needle was also long, and the blood returned was not visible after the puncture. It is not easy to judge whether the puncture was successful. Now after the needle penetrates the blood vessel, it can be seen as soon as there is blood return in the transparent tube. , Increase the success rate of blood collection.
- (1) The lancet slides out of the blood vessel. After the puncture is successful, a hand-held blood collection device tail needle and a vacuum blood collection tube are required for blood collection. At this time, the needle handle easily slides left and right, which causes the needle to slip out of the blood vessel and cause blood collection failure. Measures: Immediately after the puncture is successful, use a tape to fix the needle handle to prevent the needle handle from sliding and you can safely collect blood. (2) The tail needle falls off or blood leaks from the tail needle and the hose seat, causing waste of blood. Measures: Connect the hose holder to the tail needle firmly before blood collection, and use the middle finger of the hand holding the tail needle to fasten the hose holder during blood collection. (3) The blood vessel is warped and collapsed during blood collection. After connecting the vacuum blood collection tube, due to the instantaneous large negative pressure in the tube, the blood vessel flexed and collapsed, and the needle was close to the blood vessel wall, causing blood collection difficulties or failure. Measures: Try to choose blood vessels with sufficient blood volume and straight. (4) There is still blood in the transparent hose after blood collection. The vacuum blood collection tube uses negative pressure to suck blood into the tube. At the end of blood collection, because the pressure inside and outside the tube is equal, most of the blood in the transparent tube can no longer be injected into the tube, causing waste. Measures: Unfasten the tourniquet while connecting the last blood collection tube, and pull the needle when the required blood volume is almost collected. In this way, the blood in the transparent tube is sucked into the tube using the negative pressure, which will not cause the above. wasted. (5) After the puncture of the blood vessel was successfully connected, the vacuum blood collection tube was connected, but blood could not enter the tube. At this time, insufficient blood volume and collapse of the blood vessel were ruled out, mostly due to the disappearance of negative pressure in the vacuum blood collection tube. Measures: Select one-time unused blood collection tube. If the previous blood collection failed, as long as the tail needle pierces the tube, even if the tube is not contaminated, it can not be reused. The tube must be replaced when the blood is collected again. Do not use the blood collection device before blood collection The tail needle penetrates the vacuum test tube. The above two points will make the vacuum test tube communicate with the atmosphere, so that the negative pressure disappears, and the blood cannot automatically flow into the tube, resulting in the failure of blood collection.