Disposable safety syringe with syringe needle capable of automatically retracting

A safety syringe and automatic retraction technology, applied in the field of medical devices, can solve the problems of unfavorable assembly line automatic assembly and production, complicated structure of the syringe, difficult one-time use, etc., to improve the degree of automation and efficiency, reliable function and convenient assembly Effect

Active Publication Date: 2009-07-15
ZHEJIANG KANGKANG MEDICAL DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently used disposable syringes have many deficiencies due to their unreasonable structure.
The needles of some existing disposable syringes are exposed after use, which is very easy to cause sharp injuries, and there is a hidden danger of direct cross-infection. That is, the used syringes are reprocessed and then reused, so it is difficult to achieve real one-time use
There are also some syringes with complex structures, inconvenient assembly, low pass rate of finished products in assembly, and even more unfavorable for assembly line automatic assembly production. Compared with ordinary syringes, there is a big difference in usage habits.

Method used

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  • Disposable safety syringe with syringe needle capable of automatically retracting
  • Disposable safety syringe with syringe needle capable of automatically retracting
  • Disposable safety syringe with syringe needle capable of automatically retracting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The present invention is a disposable safety syringe with automatically retractable needle, such as figure 1 , figure 2 , image 3 and Figure 4 As shown, it includes a needle, a syringe 1 and a push rod 2. The needle includes a needle tube 3 and a core tube 4. The core tube 4 is a hollow core tube with a small opening at the upper end and a large opening at the lower end. The needle tube of the needle 3 and the core tube 4 are connected by the existing technology, the needle tube 3 is fixedly embedded on the core tube, the push rod 2 is inserted into the inner cavity of the syringe 1, and the outer circumference of one end is fixed with a piston 11, and the push rod 2 is inserted from the large mouth end (lower end) of the syringe 1 Inserted into its inner chamber, the sealing effect can be played by the piston 11, which belongs to the prior art, and will not be described in detail in the present invention. One end of the needle of the disposable safety syringe who...

Embodiment 2

[0036] This embodiment is basically similar to Embodiment 1, except that the disposable safety syringe with automatically retractable needle of the present invention also includes a push rod anti-retraction device. Chuck 202, the anti-retraction card basket 10 is fixedly clamped in the inner cavity of the large mouth end of the hollow syringe 1, and the anti-retraction chuck 202 is arranged outside the rear (lower) end of the push rod 2. like image 3As shown, when pushing the push rod 2 to inject the medicinal liquid, the anti-retraction chuck 202 has stretched the anti-retraction card basket 10 from the inside, and entered the front (upper) part of the anti-retraction card basket 10, so that the push rod 2 cannot move backward ( down) withdrawn.

Embodiment 3

[0038] This embodiment is basically similar to Embodiment 1, except that the disposable safety syringe with automatically retractable needle of the present invention also includes a safety device, and the safety frame 9 of the safety device is fixedly connected to the lower end of the push rod 2, which It includes a safety hook groove 901, a safety hook head 902 and a safety finger 903 fixedly connected together. The safety hook head 902 can be disengaged from the safety hook groove 901 (see figure 1 shown) and hook-up (see figure 2 shown). Safety frame 9 doubles as the press of push rod 2. When the safety hook head 902 and the safety hook groove 901 are in the insurable state of being disengaged, when the push rod 2 is pushed by pressing the hand, the safety finger 903 is received by the bottom (lower) part of the large mouth end of the syringe 1 (or the stop card basket 10) The push rod 2 cannot continue to advance, so the needle retracting device is not activated, and t...

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PUM

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Abstract

A disposable safe injector with a needle head capable of retracting automatically relates to the technical field of medical devices. The disposable safe injector comprises the needle head, a needle cylinder and a push rod. The needle head comprises a needle tube and a core tube; the core tube is a hollow coring tube; the needle tube is fixedly inserted in the core tube; the push rod is inserted in the inner cavity of the needle tube; the disposable safe injector further comprises a needle head positioning and sealing device and a needle head retracting device; and after the injection is finished, the needle head can be automatically retreated and concealed. The invention has the advantages of reasonable design, convenient assembly, suitable automatic assembly on a production line, high production automation and efficiency, good quality of automatic assembly, high yield, unchanged traditional method when in use, convenient operation and reliable action; the needle head can be retracted and concealed automatically after the injection, so that doctors and patients are ensured not to be damaged by a needle point; the disposable use of the injector is beneficial to realization in real sense; the infection of hematogenous diseases is avoided; and a safer and more sanitary medical environment is created.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a disposable safety syringe with automatically retractable needles. Background technique [0002] The use of disposable sterile syringes when injecting medicinal solutions and preventing vaccines has played a positive role in controlling iatrogenic infectious diseases and preventing cross-infection. However, the currently used disposable syringes have many deficiencies due to their unreasonable structure. The needles of some existing disposable syringes are exposed after use, which is very easy to cause sharp injuries, and there is a hidden danger of direct cross-infection. That is, the discarded syringes after use are reprocessed and then reused, so it is difficult to realize real disposable use. There are also some syringes with complex structures, inconvenient assembly, low pass rate of finished products in assembly, and even more unfavorable for assembly line automa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61M5/178A61M5/50
CPCA61M5/3234A61M5/508A61M2005/31508
Inventor 蒋文俊
Owner ZHEJIANG KANGKANG MEDICAL DEVICES
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