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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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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is that the needle part of the anti-puncture infusion needle in the prior art is not fixed securely during use, is easily damaged, and the needle protection recovery operation is cumbersome and time-consuming, which reduces the work efficiency of medical staff. ; and further provide a safety needle cover that is firmly connected with each other and is easy to operate, and further provides a safety blood collection syringe with the safety needle cover

Method used

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  • Safe needle guard and safe blood taking needle cylinder
  • Safe needle guard and safe blood taking needle cylinder
  • Safe needle guard and safe blood taking needle cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 , 2 As shown in and 3, a safety needle cover described in this embodiment includes a needle body 1, and the protective sheath 2 sleeved on the needle body 1 is rotated through a connecting structure, and the connecting structure includes at least one The chute 3 on the protective cover 2, at least one sliding part 4 provided on the needle body 1 and slidably embedded in the chute 3; wherein, the tail end of the chute 3 is also provided with at least one elastic The blocking part 5, when recovering, the needle head of the needle body 1 retracts toward the inner cavity of the protective sheath 2 or the protective sheath 2 slides toward the needle head of the needle body 1, when the sliding part 4 passes over the The elastic blocking part 5, the needle is retracted into the inner cavity of the protective sheath 2; as a preferred embodiment, the protective sheath 2 is set as a butterfly-shaped protective sheath 2

[0033] In this safety needle cover, the ...

Embodiment 2

[0038] Such as Figure 4 and 5As shown, a safety needle sheath described in this embodiment includes a needle body 1, and a protective sheath 2 sleeved on the needle body 1 is rotated through a connection structure, and the connection structure includes at least one 2, at least one sliding part 4 provided on the needle body 1 and slidably embedded in the sliding groove 3; wherein, the tail end of the sliding groove 3 is also provided with at least one elastic blocking part 5. When recovering, the needle head of the needle body 1 retracts toward the inner cavity of the protective sheath 2 or the protective sheath 2 slides toward the needle head of the needle body 1. When the sliding part 4 passes over the elastic The blocking part 5, the needle is retracted into the inner cavity of the protective sheath 2; as a preferred embodiment, the protective sheath 2 is set as a butterfly-shaped protective sheath 2.

[0039] In this safety needle cover, the sliding part 4 of the needle ...

Embodiment 3

[0044] Such as Figure 6 and 7 As shown, as a convertible embodiment, the difference between this embodiment and Embodiment 2 is that the elastic blocking part 5 is set as two inverted tooth elastic blocking parts formed on the inner side wall of the tail end of the through groove. .

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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.

Description

technical field [0001] The invention relates to a needle protection device after use, in particular to a safety needle cover and a safety blood collection syringe which can be used for various medical needles. Background technique [0002] Medical needles such as injection needles, blood collection needles, medicine dispensing needles, and flushing needles are discarded by most people after use. Because traditional medical needles such as injection needles, blood collection needles, medicine dispensing needles, and flushing needles do not have safety protection devices, Needle stick injuries are often encountered during waste cleaning and recycling, and there is a risk of cross-infection. [0003] For this reason, the Chinese patent document CN104800925A discloses a kind of anti-stick infusion needle, which is composed of a needle, a needle protective cover, a needle handle, a protective cover, a flexible tube and a protective cover handle, and the needle is connected to the...

Claims

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Application Information

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IPC IPC(8): A61M5/158A61B5/15
CPCA61M5/158A61B5/150564A61B5/150633
Inventor 汪贤宗郑万章
Owner 郑万章
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