Hemostix with magnetic stirring function

Abstract

The invention discloses a hemostix with a magnetic stirring function. The hemostix comprises a hemostix body and a magnetic stirring body arranged in an inner cavity of the hemostix body, and the magnetic stirring body is used for making reciprocating stirring motion along the inner cavity of the hemostix body under the action of a changing magnetic field. The hemostix with the magnetic stirring function is uniform in stirring and convenient to use, and the phenomenon of coagulation caused by uneven mixing of blood and anticoagulants in the blood sampling process is effectively avoided.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to a blood sampling device with a magnetic stirring function. Background technique [0002] At present, the anticoagulant is sprayed on the inner wall of the existing blood collection device. After the blood collection is completed, the blood collection device is rubbed back and forth and turned upside down to promote the mixing of blood and anticoagulant. The most commonly used anticoagulant is heparin. Heparin binds to antithrombin III, which blocks blood clotting. An ideal blood gas sample should have less than 5% dead space air. Under such air-isolated conditions, it is very difficult to mix the anticoagulant. Therefore, the collection of blood gas samples requires the use of a larger concentration of heparin for anticoagulation. IFCC (International Federation of Clinical Chemistry) recommends that the final appropriate heparin concentration is 50IU / mL. However, ...

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Problems solved by technology

[0003] At present, there are mixing balls in the blood collection device, which mainly rely on constantly rubbing the blood collection device and repeatedly inverting the blood collection device to make the mixing balls stir the blood. Due to the small size of the small balls, the mixing effect is not ideal

For a micro-volume blood collection device, add a metal ball to the blood collection device for oscillation and stirring. For a large-capacity blood collection device, the effect is not ideal, and it is still necessary to rub the blood collection device several times.

Or use a separate stirring and mixing equipment, although the mixing effect is good, but it is bulky and inconvenient, and before the equipment is mixed, it still needs to be manually pre-mixed, which is easy to cause blood coagulation

[0004] Therefore, how to solve the problem of uneven stirring of blood and anticoagulant becomes a technical problem that those skilled in the art need to solve

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