Tube protective sleeve of single-wing transfusion needle

Abstract

The invention relates to a protective sheath of needle tube used in the single wing transfusion needle, whose front and back two ends are connected, and the wall of the back end of said protective sheath has a slotted hole for fixing the root of the single wing needle; a slit is arranged from the leading edge of said slotted hole to the front port of sheath which is characterized in its shape of tortuous channel that said slit comprises a first straight channel, a guide inclined channel, a offset straight channel, a tortuous inclined channel and a second straight channel in the sequence from the front port of protective sheath to the front edge of slotted hole while a neck part which is displaced to the second straight channel slit is formed on the second channel near the slotted hole. The invention utilizes the aforementioned technical project that processing the slit of said protective sheath into the shape of tortuous channel as the slit can hole the needle tube for improving the processing on the small slit, reducing the disability rate, providing the base to the patch production, and reduce the cost. Said invention can be widely used in vacuum blood taking needle and machine blood taking needle.

Description

technical field [0001] The invention relates to a needle tube protective cover of a single-wing infusion needle. Background technique [0002] The single-wing infusion needle is an indispensable medical device for intravenous infusion and blood collection. Such as figure 1 As shown, the existing single-wing infusion needle includes a needle tube 1, an infusion tube 4, a needle base 2, and a single-wing needle handle 3. The needle tube 1 is directly bonded to the front end of the needle base 2, and the infusion tube 4 is fixedly connected to the needle base. 2, and the side edge of the needle holder 2 is fixedly connected with a single-winged needle handle 3. In addition, the needle tube 1 is covered with a needle tube sheath 6 before it is used. [0003] Before the single-wing infusion needle is used, the needle tube sheath 6 is pulled out. After the intravenous infusion is completed, because of safety concerns, the needle tube sheath 6 is not suitable for reuse, so the n...

AI Technical Summary

Problems solved by technology

[0007] However, in order to prevent the needle tube 1 from falling out from the slit 74 on the sheath 7, the gap requirement is generally small, which not only makes the two wings of the butterfly needle overlap or the single-wing needle handle 3 slides in the slit 74 Poor performance, more importantly; small gaps bring difficulty to production and processing, especially the two symmetrical inclined chamfers at the front end of the clamping groove in the butterfly needle safety needle sleeve, making it difficult to meet the processing requirements during production , the scrap rate is high, and it is difficult to meet the needs of mass production, and the production cost is relatively high

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