Puncturing appliance capable of performing continuous firing and needle lifting by single hand

Abstract

The invention discloses a puncturing appliance capable of performing continuous firing and needle lifting by a single hand. The puncturing appliance comprises a housing, a trigger striking assembly, aneedle lifting assembly and a pen cap, wherein the housing is combined by the butting of an upper housing and a lower housing; an accommodating cavity is formed in the housing; two parallel through openings are formed in the rear end of the housing; the trigger striking assembly and the needle lifting assembly are mounted in the accommodating cavity in parallel, and the rear ends of the trigger striking assembly and the needle lifting assembly extend from the two through openings, and are arranged at the rear ends of the housing in parallel; the pen cap is connected to a contracting part of the front end of the housing in a sleeving manner; and an opening allowing an adapted blood taking needle to pass and penetrate is formed in the opening in the front end of the pen cap. The puncturingappliance disclosed by the invention is grasped by the single hand, the operations of firing, puncturing and lifting needle can be realized through position exchanging and pressing by a thumb; after akey is loosened, the puncturing appliance is automatically returned to prepare for the next operation; when a needle lifting key is pressed, the blood taking needle is directly removed from the frontend of the pen cap, during assembling a needle, the blood taking needle is directly assembled at the front end of the pen cap, and the pen cap does not need to be removed, so that the effect of performing continuous firing and needle lifting by the single hand is realized, and the using convenience is greatly improved.

Description

technical field [0001] The invention relates to the technical field of medical sampling instruments, more specifically, it relates to a puncturing instrument capable of continuously firing and withdrawing needles with one hand. Background technique [0002] In modern medicine, the quantitative determination of related components in human and animal body fluids is very common. For example, for a specific patient or animal, blood samples are collected by puncturing living skin, and glucose, lactate, cholesterol and bilirubin in blood are measured. etc. for monitoring and analysis. Puncture devices and various similar devices named after blood collection devices, blood collection pens, etc. are constantly improving, and puncture devices and blood collection needles used in conjunction with them are more and more widely used. However, most of the puncture instruments currently on the market are generally reusable tools due to cost issues, and in order to avoid cross-infection, ...

AI Technical Summary

Problems solved by technology

However, most of the puncture instruments currently on the market are generally reusable tools due to cost issues, and in order to avoid cross-infection, the blood collection needles used in conjunction with them are disposable products, and the two need to be used in combination

[0003] To complete a blood collection operation with a puncture device, nine basic steps are required: 1. Remove the pen cap, 2. Install the needle and remove the needle protective cap, 3. Reinstall the pen cap, 4. Adjust the puncture depth, 5. Prepare for loading, 6. Press the button Puncture blood collection, 7. Remove the pen cap, 8. Unload the needle from the side (push the needle back button forward and then pull back to reset), 9. Put back the pen cap for use, etc. The whole process needs to be changed repeatedly, which is very cumbersome

Chinese patent CN109512437A announces the structure of "needle-type blood collection pen without detachable cap". Although the process of changing the needle has eliminated the process of repeatedly disassembling and assembling the pen cap, it still cannot simplify the following steps: 1. The tail rod needs to be pulled back once for each puncture and blood collection. Load and prepare, and then press the launch button on the side wall to puncture blood collection; 2. After completing puncture and blood collection, push the needle back button on the side and then pull it back to reset

Even these two steps also need to change hands repeatedly, which is not conducive to one-handed operation, and it is impossible to realize connected blood collection. Although the cumbersomeness has been reduced, the effect is still not ideal, and the convenience of use is greatly reduced.

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