Negative-pressure type blood collection needle

Abstract

The invention discloses a negative-pressure type blood collection needle, which is high in blood collection speed, light in pain feeling and high in blood flow rate. A sucking disc, which can implement negative-pressure adsorption, sleeves the front end of a pricking needle. At present, we are always seeking a blood collection technical scheme which is capable of relieving pain feeling relatively obviously in medical and technical fields, however no substantial progress has been made up to now. With the application of the negative-pressure type blood collection needle provided by the invention, pain in a patient can be obviously relieved in blood collection, and meanwhile, a blood collection success rate and test accuracy can be remarkably improved. The negative-pressure type blood collection needle, when used for collecting blood, is not deep in prickling, and a needle hole is small since the needle is small in diameter. The blood collection needle is high in blood outflow speed and high in flow leakage rate since skin around a blood collection point is under a negative-pressure expanded congestive state; and due to the design of a sealed cavity structure, collected blood is isolated from ambient air, so that a probability that a blood sample is polluted is reduced.

Description

technical field [0001] The invention relates to a blood collection needle, in particular to a blood collection needle used by an individual to collect blood from himself. Background technique [0002] At present, for a large number of diabetic patients, many blood tests must be performed on fingertips every day, and most patients are deeply afraid of blood sampling. [0003] In addition, in the prior art, the blood collection forms used for personal blood monitoring tests are all exposed to the air environment. Usually, the blood collection needle is inserted into the patient's skin by elastic force and pulled out quickly, and then the blood is squeezed out from the wound. Since sampling requires a certain amount of blood, the blood collection needle needs to be inserted into the skin to a certain depth during operation. Take a reasonable amount of blood, so, bring greater pain to the patient. [0004] The above-mentioned traditional blood collection technology has the fol...

AI Technical Summary

Problems solved by technology

[0005] 1) The depth of the needle is deep, the diameter of the needle is large, and the pain is relatively strong, especially for children and the elderly with dry skin

[0006] 2) There is too little blood naturally oozing from the wound, and manual squeezing is often required to have the blood volume that meets the test needs

[0007] 3) The oozing blood drops are completely exposed to the air, and are easily oxidized and polluted by the environment during operation, which affects the accuracy of the test

[0008] 4) For the collected blood sample, when the adsorption port of the test piece (test paper) is used to contact the blood drop with bare hands, the blood sample cannot be completely adsorbed on the test piece by the adsorption port due to unstable operation, which will cause the test to fail. Need to draw blood again

Especially for the elderly, make them suffer multiple times and unnecessary pain and bring them too much waste of test strips and needles

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