Buoy for puncture needle

Abstract

The invention discloses a buoy for a puncture needle. The buoy comprises a body part and a pressing part, wherein the pressing part is arranged on the body part, the body part is provided with a diameter-variable accommodating cavity, and the accommodating cavity is used for clamping the puncture needle. According to the buoy, when the puncture needle is assembled, the inner diameter of the accommodating cavity in the body part is adjusted by pressing the pressing part, when the inner diameter of the accommodating cavity is larger than the outer diameter of the puncture needle, the puncture needle is placed in the accommodating cavity, then pressing of the pressing part is stopped, the puncture needle is clamped by the buoy, and therefore assembling is completed; and when the position of the buoy needs to be adjusted, the inner diameter of the accommodating cavity is adjusted through the pressing part, so that the inner diameter of the accommodating cavity is larger than the outer diameter of the puncture needle, then the buoy is moved, and when the buoy reaches the target position, pressing of the pressing part is stopped, so that the buoy clamps the puncture needle.

Description

Technical field [0001] The present invention relates to the field of medical devices, and in particular, to a buoy for puncture needles. Background technique [0002] The puncture biopsy is the main way to get pathological diagnosis. The buoy of the puncture needle in the puncture biopsy is used to mark the position on the puncture needle to calibrate or assist the depth of the puncture. However, the puncture needle pop-up time is less than one thousandth, and will stop in an instant after completing the puncture stroke, resulting in a greater inertability of the buoy, so the buoy will produce a large displacement, and it needs Reconservation. As a result, the reliability and practicability of the buoy is greatly weakened, and many doctors do not trust during the puncture surgery without using buoy. [0003] The existing buoy devices are usually annular, mainly including plastic ring structural buoy and torsion spring structural buoy. The plastic ring structure buoy is set on the...

AI Technical Summary

Problems solved by technology

The torsion spring structure buoy has a better marking effect than the plastic ring structure buoy, and it is relatively difficult to move, but it still cannot meet the needs of marking, and the position of the buoy still needs to be readjusted after each puncture

[0004] In addition, both types of buoys need to be inserted from the tip of the needle during installation, which is inconvenient to use. If the sterile glove is punctured or scratched by the needle tip of the puncture needle when the doctor is using it, the sterile environment of the puncture needle will be destroyed

In addition, although the ring buoy can reduce the displacement of the buoy during puncture by setting a large amount of interference, it will also cause difficulty in moving the buoy during adjustment, which cannot meet the needs of surgery

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