Enhanced developing puncture needle for ultrasound-guided nerve block
A nerve block and puncture needle technology, applied in the field of medical devices, can solve the problems of nerve damage caused by puncture needles, affecting the positioning of puncture needles, affecting the effect of nerve block, etc.
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Embodiment 1
[0029] refer to Figure 1-3 , the present invention provides an enhanced development puncture needle for ultrasound-guided nerve block, comprising an outer needle 1, one end of the outer needle 1 is obliquely provided with a cutting edge 8, the cutting edge 8 is obliquely set, and the other end of the outer needle 1 is fixed to There is a needle seat, and the inclined cutting edge 8 can increase the puncture ability of the present invention and reduce the pain of puncture;
[0030] Outer needle 1 comprises shell 11, and shell 11 is provided with inner shell 12, and inner shell 12 and shell 11 are eccentrically fixed; Cavity 13, the cavity 13 is filled with gas, gas with high reflectivity to ultrasonic waves, such as oxygen, nitrogen, argon, etc., using ultrasonic waves to have high reflectivity on the contact surface of different media, and at the same time, the reflectivity of gas to ultrasonic waves is greater than that of solids The characteristics of the present invention...
Embodiment 2
[0046] refer to Figure 4-5 The difference between this embodiment and Embodiment 1 is that this embodiment also includes an inner needle handle 10, one end of the inner needle handle 10 is fixed with a plug 1001, and the plug 1001 is detachably connected to the slot on the base 4, which is convenient Hold it firmly; there is a placement hole 1002 in the handle 10, the placement hole 1002 runs through the plug 1001, and the end of the placement hole 1002 away from the plug 1001 is slidably connected with a sliding piece 1005, between the sliding piece 1005 and the end of the placement hole 1002 away from the plug 1001 A spring 1007 is fixed between them; the side wall of the handle 10 is circumferentially provided with a limit groove 1004, the limit groove 1004 communicates with the placement hole 1002, and the slide piece 1005 includes a center slide piece located in the place hole 1002 and a center slide piece fixed with the center slide piece. Side slide, the end of the sid...
Embodiment 3
[0049] refer to Figure 6 The difference between this embodiment and Embodiment 2 is that the inner needle 5 does not offer a hollow groove 51, but a guide wire cavity 57, and the solid position of the needle body 52 near the tip is embedded with an ultrasonic generator 55, and the ultrasonic generator 55 Electrically connected with a wire 56, the wire is arranged in the wire cavity 57, and protrudes from the tailstock 6 to connect with an ultrasonic instrument (the prior art, not shown in the figure).
[0050] In this embodiment, the functionality of the inner needle 5 is weakened, and the use of the inner needle 5 as a sampling needle is eliminated. However, by setting the ultrasonic generator 55, when puncturing, the ultrasonic generator 55 emits ultrasonic waves, and the needle passing through the inner needle 5 The wall, the outer needle 1 and the human tissue are received by an ultrasonic imaging device (the prior art, not shown in the figure), thereby forming an ultraso...
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Abstract
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