Puncture needle for the treatment of trigeminal neuralgia

Abstract

The invention discloses a puncture needle for the treatment of trigeminal neuralgia, which includes: a puncture needle sheath, a puncture needle and a probe. The puncture needle sheath is provided with a puncture passage, a first connecting piece is arranged at the rear of the puncture needle sheath, a fixture block extending outward is arranged on the first connecting piece in an integrated mode,a first scale display bar is arranged on the puncture needle sheath, the distance between the first scale display bar and the front end of the puncture needle sheath is ranged from 7 centimeters to 8centimeters, and the front end of the puncture needle sheath is arranged as an oblique mouth; the puncture needle is arranged to be able to pass through the puncture passage, the front end of the puncture needle is a needle tip part, the length of the puncture needle is longer than the length of the puncture needle sheath, and the rear of the puncture needle is provided with a second connecting piece matching and fixing with the fixture block on the first connecting piece. The probe is arranged to be able to pass through the puncture passage, the front end of the probe is a blunt head part, and the length of the probe is longer than the length of the puncture needle sheath. The puncture needle of the invention overcomes the problem of the existing puncture needle, and can be better applied in the operation for the treatment of trigeminal neuralgia.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a puncture needle for treating trigeminal neuralgia. Background technique [0002] When treating trigeminal neuralgia, the traditional method is to use the Hartel anterior approach, inserting the needle from 2-3 cm outside the corner of the patient's mouth, using a puncture needle to reach the foramen ovale, and then using a balloon catheter for observation and angiography. [0003] Existing puncture needles generally include a needle and a needle sheath. The length of the needle is longer than the needle sheath. There are two scale values ​​of 5cm and 10cm outside the needle sheath to show the depth of the puncture. The combination of the needle and the needle sheath pierces the human body together to reach the outside of the foramen ovale, and then the needle is withdrawn, and the needle sheath remains in the human body for inserting the balloon catheter. [0004] After continuo...

AI Technical Summary

Problems solved by technology

[0004] After continuous practice and research by the applicant, it is found that the existing puncture needles have the following problems in use: first, the distance from the surface layer of the average person's skin to the foramen ovale is about 7cm-8cm, and the existing puncture sheath Neither the two scale values ​​on the needle can accurately display the appropriate puncture depth, nor can it provide an accurate indication of the puncture depth; second, there is no fixed connection structure between the existing puncture needle and the needle sheath, and generally only Apply force to the rear of one of the parts to make the two go deep into the human body, but after entering the human body, the needle or the needle sheath will withdraw backward due to internal resistance, affecting the use effect; third, because the needle cannot be excessively It goes deep into the foramen ovale, so it cannot effectively detect and guide the balloon catheter, and there is a barrier membrane in the foramen ovale, and the balloon catheter with a softer body can pierce the barrier membrane, which may cause the balloon catheter The change of the position and direction of the catheter will affect the effect of the subsequent angiography; fourth, most of the current needle sheaths are flat, and the guiding direction for the balloon catheter is relatively single. The adjustment of direction and position will affect the operation effect

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