Ultrasound-guided brachial plexus nerve block needle set and use method thereof

Abstract

The invention discloses an ultrasound-guided brachial plexus nerve block needle set and a use method thereof. The set comprises an outer sheathed needle, an outer sheathed needle core, an inner core needle, an indwelling tube and an indwelling tube connector, and the outer sheathed needle core is matched with the outer sheathed needle. When the outer sheathed needle core is inserted into the outer sheathed needle, the head of the outer sheathed needle core is flush with the head of the outer sheathed needle, the indwelling tube sleeves an inner core needle body, and the position from a side hole to the tip of the inner core needle is exposed to the indwelling tube. When the inner core needle sleeved by the indwelling tube is inserted into the outer sheathed needle, the tail end of the indwelling tube extends out of the head of the outer sheathed needle, and the indwelling tube connector is matched with the indwelling tube. According to the use method, the outer sheathed needle core and the outer sheathed needle in inserted connection are placed outside a brachial plexus nerve sheath in a combined manner. The inner core needle sleeved by the indwelling tube is inserted into the outer sheathed needle and fixedly connected with the outer sheathed needle in an inserted manner, the set punctures a target nerve, local anesthetics are injected after confirmation of puncture, the step can be repeated if a plurality of nerves need to be blocked, and the indwelling tube is retained. The puncture pain of a patient is greatly relieved, tube insertion is accurate, and continuous block effects can be achieved.

Description

technical field [0001] The invention relates to a brachial plexus block needle set under the guidance of ultrasound and a use method thereof. Background technique [0002] There are two main types of nerve stimulation block needles currently in use: [0003] One is the outer target needle, that is, the beveled needle (the needle tip is at an acute angle of less than 20 degrees). Its disadvantage is that it can easily cause neurovascular cutting damage. When the outer target needle walks in the tissue, it is easy to cause more unnecessary damage, such as tissue cutting. , puncture blood vessels (arteries are prone to hematoma, veins are prone to congestion), puncture or cutting nerves will cause mild skin numbness in the corresponding nerve innervation area, and severe weakness of the corresponding innervated muscles; [0004] The second is that the inner core needle, that is, the side hole needle (the needle tip is a round needle tip), has the disadvantages that it is troub...

AI Technical Summary

Problems solved by technology

[0003] One is the outer target needle, that is, the beveled needle (the needle tip is at an acute angle of less than 20 degrees). Its disadvantage is that it can easily cause neurovascular cutting damage. When the outer target needle walks in the tissue, it is easy to cause more unnecessary damage, such as tissue cutting. , puncture blood vessels (arteries are prone to hematoma, veins are prone to congestion), puncture or cutting nerves will cause mild skin numbness in the corresponding nerve innervation area, and severe weakness of the corresponding innervated muscles;

[0004] The second is that the inner core needle, that is, the side hole needle (the needle tip is a round needle tip), has the disadvantages that it is troublesome in the skin puncture process, the puncture force is large, and the patient feels great pain. At the same time, in the process of puncture, in order to avoid damage to nerves and blood vessels possible damage, try to use a needle with a smaller outer diameter

Due to the thinner needle body, when performing deep puncture, the needle body is easily deformed with the movement of muscles and other human tissues, causing the needle tip to shift, making the distance between the needle tip and the nerve deviate

[0005] During the operation, because the outer sheath needle does not actually reach the target nerve attachment, when the indwelling tube is inserted through the outer sheath needle, the position of the catheter is not accurate, and the continuous block effect cannot be guaranteed

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