baby heel lancing device

Abstract

A heel blood sampler for infants, comprising a casing, a safety component, a trigger button, a blade, a knife holder, a dial shaft and a torsion spring, the safety component includes a pull ring, a button stop rib and a blade protective shell, and the button stop The moving rib locks the trigger button, and the blade protective shell covers the blade; the direction of the button of the trigger button is at an angle of about 90° with the direction of the knife output of the blade; the dial shaft can drive the The knife rest is linked; the end of the knife rest close to the blade is provided with a beveled pin, and the beveled pin is sleeved in a profiling groove on the shell, so that the blade moves according to the track of the profiling groove; In the locked state, the protrusion at the lower end of the trigger button catches the locking angle at the lower end of the dial shaft, so that the torsion spring is in an energy storage state. The blood collection device of the present invention can prevent the blades from being polluted, the medical staff can accurately position when collecting blood, avoid control errors, and truly achieve painless blood collection.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to a disposable infant heel blood sampling device, which acts on the blood sampling part of the human body by cutting with a blade, so as to truly achieve painless blood sampling. Background technique [0002] As a tool, the blood collection device is widely used in medical units. There are currently two blood collection methods on the market. One is the acupuncture method. The needles are round and triangular, and are mainly used for adult fingers. Tip blood collection is also partly applied to the heel blood collection of infants, and another is to use a blade to cut the blood collection site. Since this method is less painful and has a large amount of bleeding, it is mainly used for heel blood collection of infants, especially just born. But there are two kinds of scratch type blood collection needles on the market at present. Their firing methods are all through the push button ...

AI Technical Summary

Problems solved by technology

[0003] First, the two types of lancets currently on the market are triggered by pushing the push button with the thumb, the angle between the trigger button and the blade is 120°, and the thumb and middle finger are fixed on the side of the product. The medical personnel use the blood collection needle to generate a rotational force, which leads to unstable positioning and misoperation during blood collection, which affects the success rate of blood collection

And the safety device and the trigger key are at the same place, if the medical personnel do not operate properly during use, it is easy to cause false triggering.

[0004] Second, the blade for blood collection is exposed in the air without any protection, and its service life can only be guaranteed by the sealing of the outer package (up to 5 years). The exposed blade will bring great harm to product assembly and use. Inconvenient, in case of contamination, it will bring great risks when used, and even affect the results of blood test, leading to medical accidents

[0005] Thirdly, the blood collection methods of these two blood collection needles all adopt the blade scratching type blood collection method. The angle between the trigger key and the blade is 120°, and the angle of the blade is within the range of 28°--38°. You need to press the blood collection site and pierce the skin. Although the pain is lighter than acupuncture, it is not really painless.

[0006] In view of the low resistance of babies, and in order to solve the above shortcomings of blood collection needles, there is an urgent need in the market for a blood collection device specially suitable for babies, which can prevent the blade from being polluted, and the medical staff can accurately position when taking blood, and avoid manipulation errors. To achieve painless blood collection

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