Fluid conveying device with retractable needle
A technology of fluid delivery and fluid delivery tube, which is applied in the direction of needles, devices introduced into the body, medical science, etc. It can solve the problems of inability to guarantee the one-time use of needles, poor anti-acupuncture effect, etc., and achieve simplified structure, simple manufacture and use and convenient effect
Pending Publication Date: 2018-01-30
汪贤宗
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Problems solved by technology
[0006] Therefore, the technical problem to be solved by the present invention is to overcome the defect that the retractable needle assembly in the prior art has poor anti-acupuncture effect and cannot guarantee that the needle can only be used for one time, so as to provide a device with better anti-acupuncture effect. Fluid delivery device having a retractable needle and the needle cannot be reused after being retracted
Method used
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Embodiment 1
[0059] Such as Figure 1 to Figure 15 Shown is embodiment 1 of the present invention. This embodiment provides a fluid delivery device with a retractable needle, and the fluid delivery device can be used to collect blood from a human body or deliver medical fluid to a human body. The device comprises a needle structure 1, a fluid delivery tube 2 and a needle sheath 3, the needle structure 1 includes a needle head 11 with a needle tip; the fluid delivery tube 2 is communicably fixed to the end of the needle structure 1 away from the needle tip connected, and together with the needle structure 1 forms a fluid delivery channel for fluid communication; the needle sheath 3 includes a sheath body, and a cavity formed in the sheath body that can completely accommodate the needle 11, so The cavity has an opening 31 through which the needle 11 can protrude; the cavity wall of the cavity is provided with a strip-shaped guide groove 32 extending in the axial direction, and the outer wal...
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The invention provides a fluid conveying device with a retractable needle, and belongs to the field of fluid conveying devices. The fluid conveying device with the retractable needle includes the needle structure, a fluid conveying tube, a needle sleeve and a guide-groove locking part; the needle sleeve includes a cavity for containing the needle; a long-strip-shaped guide groove extending in theaxial direction is formed in the wall of the cavity, and a shifting block capable of sliding in the long-strip-shaped guide groove is arranged on the outer wall of a fluid conveying channel; the guide-groove locking part can contain the shifting block, an elastic baffle structure extending outwards from the interior of the guide groove is formed on the groove wall of the end, close to the lockingpart, of a guide part, and the elastic baffle structure can stop the shifting block from slipping out of the locking part after the shifting block enters the locking part. The fluid conveying device with the retractable needle can not only prevent a used needle from accidentally injuring other people but also effectively and completely eradicate secondary usage of the needle, and it is ensured that the limit of single use is executed definitely for the fluid conveying device with the retractable needle.
Description
technical field [0001] The present invention relates to a fluid delivery device capable of inputting fluid into or outputting fluid from a human body, in particular to a fluid delivery device with a retractable needle. Background technique [0002] Traditional needle sets used to inject medicinal liquid or blood collection into the human body are generally equipped with a needle cap, which prevents the needle set from stabbing the operator before or after use, and also isolates the needle to ensure that it is safe before use. The needles are not contaminated, and residues on needles after use are not airborne. [0003] However, in actual use, the needle cap is often lost after the needle is used up. The needle without the cap is exposed to the air, which will greatly increase the risk of the operator being stabbed by mistake, and the needle remains on the needle. Various pollutants such as tissues and microorganisms, these pollutants can easily spread into the air without i...
Claims
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IPC IPC(8): A61B5/153A61M5/158
Inventor 汪贤宗
Owner 汪贤宗