Safe needle guard and safe blood taking needle cylinder
A safe, needle sheath technology, applied in the direction of needles, blood sampling devices, medical science, etc., can solve the problems of reducing the work efficiency, time-consuming and troublesome of medical staff
Active Publication Date: 2017-02-22
郑万章
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Abstract
The invention discloses a safe needle guard. The safe needle guard comprises a needle body and a protective sleeve rotationally arranged on the needle body in a sleeving mode through a connecting structure; the connecting structure comprises at least one sliding groove formed in the protective sleeve and at least one sliding part arranged on the needle body and embedded into the corresponding sliding groove in a sliding mode; at least one elastic stop part is arranged at the tail end of each sliding groove; during retraction, a needle head of the needle body retracts into an inner cavity of the protective sleeve, or the protective sleeve slides towards the needle head of the needle body, and when the sliding parts go across the elastic stop parts, the needle head retracts back to the inner cavity of the protective sleeve; therefore, the needle body slides to the head ends or the tail ends of the sliding grooves to the largest extent and only has the sliding direction, the stretching length of the needle body is always controllable, and when the needle head is not recovered after damage caused by stretching too long, the needle head can be retracted into the inner cavity of the protective sleeve just by directly pushing and pulling the needle body or the protective sleeve without rotating the needle body or the protective sleeve and will not stretch out of the protective sleeve again under the interaction of the sliding parts and the elastic stop parts.
Application Domain
SensorsBlood sampling devices +1
Technology Topic
Push and pullNeedle guard +1
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