Improved needle special for sacral canal puncture

Abstract

The invention discloses an improved needle special for sacral canal puncture. The needle comprises a needle body, the needle body is connected with a needle handle, an extended flexible pipe is connected to the side face of the needle handle, and an injector joint is formed at the other end of the extended flexible pipe. The improved remaining needle special for sacral canal puncture (the embodiment 1) and needles special for sacral canal puncture which can be used under ultrasonic guiding (the embodiment 2 and the embodiment 3) are included; the improved remaining needle special for sacral canal puncture (the embodiment 1) is suitable for cases which need a long time for sacral canal block anesthesia and sacral canal block treatment and implement continuous nerve block, such as a complex hypospadias operation, perineum reshaping, analgesia after a knee prosthesis continuous femoral nerve block operation is conducted and analgesia for herpes zoster afterpain; the needles special for sacral canal puncture (the embodiment 2 and the embodiment 3) are suitable for cases of sacral canal block anesthesia and sacral canal block treatment, wide peripheral nerve trunk and nerve plexus and nerve block and pain treatment under the ultrasonic guidance.

Description

technical field [0001] The invention relates to a medical puncture needle, in particular to an improved special needle for sacral canal puncture. Background technique [0002] Sacral canal block is punctured through the sacral hiatus, and local anesthetic is injected into the sacral cavity to block the spinal nerve. It is a method of epidural block and is suitable for operations on the rectum, anus, and perineum, as well as infants and preschool children. Abdominal surgery and caudal block drug therapy are the first choice for the treatment of lumbocrural pain and sacrococcygeal pain. [0003] 1. For a long time, in caudal block anesthesia and sacral canal treatment, anesthesiologists have routinely used 6# and 7# ordinary injection needles to connect with syringes filled with liquid medicine when performing sacral canal puncture. In recent years, some Some anesthesiologists choose 20G, 22G venous indwelling needles or peripheral venous infusion needles connected to syringe...

AI Technical Summary

Problems solved by technology

(1) All kinds of injection needles used clinically in recent years are almost disposable. The needle tip is very sharp, which is good for injection or infusion. When used for caudal puncture and nerve block, there is a sense of layering and resistance breakthrough in puncture. not obvious

(2) Use ordinary injection needles to connect syringes for sacral puncture. During the observation time after the test dose is injected, the needles are not convenient to fix and are easy to shift. The needle tip may penetrate the dura mater or penetrate blood vessels, which may cause anesthesia accidents.

The indwelling catheter with extension tube is 20-30 mm long, which is not long enough for adult sacral canal puncture, and the indwelling needle without extension tube can only complete a single block

(4) Choose ordinary peripheral intravenous infusion needles. First, opening the package is easy to contaminate, which may cause adverse events. Second, the normal size of the needle shaft of the ordinary peripheral infusion needle is 25mm, and the length of the needle shaft is insufficient. The third is the needle handle of the ordinary infusion needle. It is designed for peripheral intravenous infusion, and it is inconvenient to hold for sacral canal puncture, and most of the holding methods have the opposite direction of the needle tip slope during puncture, so it needs to be improved

[0004] 2. Patients who need a long time caudal block anesthesia, caudal block treatment and cases requiring continuous nerve block (such as complex hypospadias surgery, perineal plastic surgery, knee joint replacement after continuous femoral nerve block) Analgesia, analgesia for post-herpetic pain, etc.) have brought new technical requirements to our clinical anesthesia and pain treatment; currently clinically used indwelling needles with extension tubes have a needle stem length of 20-30mm, The length of the extension tube is 100mm, which is mainly suitable for peripheral intravenous infusion. There are deficiencies in continuous sacral canal block and continuous plexus block: 1. The length of the needle shaft for adult sacral canal block is not enough, and the continuous plexus block is not long enough. It is inconvenient to fix and easy to fall off and shift; 2. The length of the extension tube is insufficient. If a continuous adult caudal block is performed, a connecting tube needs to be added, which increases the chance of contamination and brings potential danger; Sensitivity is an important indicator for judging whether the puncture of the sacral cavity is successful. The needle tip of the indwelling needle used for peripheral venous infusion is particularly sharp, and the sense of layering, breakthrough and drop in puncture is not obvious.

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