CN211834631U - Ultrasonic guided nerve block puncture needle - Google Patents

Abstract

The utility model provides a nerve block pjncture needle of supersound guide can be so that the ultrasonic reflection strengthens, and then clear formation of image's pjncture needle. The nerve block puncture needle comprises a needle point guide area, a needle body, a needle base, an extension tube and a needle tail, wherein the needle point guide area comprises a puncture end and a guide part, and a plurality of annular grooves which are arranged in a linear manner are arranged on the superficial surface layer of the tube wall of the guide part.

Description

Ultrasonic guided nerve block puncture needle

Technical Field

The utility model relates to the field of anesthesia of medical equipment, in particular to a nerve block puncture needle used for developing under the guidance of ultrasonic waves.

Background

In modern medical fields, it is often necessary to sample, extract, inject, etc. a particular tissue or organ of a patient, such as puncturing tissue to obtain living cells, neuro-injecting anesthetics or tranquilizers, etc. Therefore, it is important to accurately grasp the position of the puncture needle tip, and it is necessary to accurately position the puncture needle using the ultrasonic guide device.

Currently, various configurations of guide regions have been used to increase the intensity of the ultrasound reflection. For example: CN 101227862B discloses a puncture needle with a guide area processed into a right-angle prism shape, but many studies show that the processing can cause safety problems such as strength reduction of the puncture needle, breakage of the puncture needle and the like; the puncture needle with a plurality of small right-angle reflectors on the needle tube forms strong reflection under ultrasound, so that strong echo displayed by the needle tube generates certain interference on the development of surrounding tissues, particularly tissues behind the needle tube. CN 107343812A discloses a puncture needle with a point-shaped concave, but a plurality of researches show that the puncture needle can cause the situation of unclear images when used in the deep tissues (the depth is more than 10 cm) of the human body; and the image of the irregular ultrasound guide pattern structure is susceptible to visual interference.

In summary, the existing puncture needles all cause unclear ultrasonic images of the puncture needle, and it is difficult to grasp the correct position of the puncture needle, and there is an urgent need to develop an ultrasound-guided puncture needle with excellent ultrasound reflectivity in the medical anesthesia field to improve the accuracy of puncture.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an ultrasonic guide nerve block puncture needle with excellent ultrasonic reflectivity. The specific technical scheme is as follows, an ultrasound-guided nerve block puncture needle comprises: needle body, needle base, extension pipe, backshank, wherein the needle body include needle point guide area and pipe shaft, needle point guide area be located the needle body anterior, including puncture end and guide portion, the surface of guide portion be equipped with a plurality of annular grooves that become the linear type and arrange, annular groove not pierce through the pipe wall of needle body, the needle base establish needle body afterbody connects the extension pipe, the needle base on be equipped with the concave surface, be equipped with a plurality of tiny archs on the concave surface, extension pipe terminal with the backshank is connected, the backshank is for being used for connecting defeated, the interface of imbibition body.

Furthermore, the linear arranged annular grooves are arranged in 4-8 rows in parallel, the radian of each row is 45-90 degrees, and 3-20 annular grooves are arranged in each row.

Further, the depth of the annular groove is 1/5-3/5 of the wall thickness of the guide part.

Further, the depth of the annular groove is 0.010mm-0.100 mm.

Furthermore, the annular grooves are linearly arranged in the guide area, and the distance between the annular grooves is 0.01-2.00 mm.

Further, the width of the annular groove is 0.05-0.4 mm; the width of the middle salient point is 0.02-0.2 mm.

Furthermore, the needle point guide area is positioned at the position of 1-20mm near the needle tip.

Furthermore, the surface of the puncture needle body is provided with a non-resin coating or a resin coating.

According to the utility model discloses an supersound guide nerve blocks pjncture needle, when the direction of illumination of the detection ripples such as ultrasonic probe ultrasonic wave becomes any angle with the axle of pjncture needle, the formation of image that the pjncture needle all can be clear can make the movement track of the needle point of the operator observation of being convenient for like this, and the control needle point accuracy arrives at the destination.

Drawings

Fig. 1 is a schematic view of an ultrasound-guided nerve block puncture needle according to an embodiment of the present invention;

the needle comprises a needle tip guide area 1, a needle tip guide area 2, a tube body 3, a needle base 4, an extension tube 5 and a needle tail.

FIG. 2 is a schematic view of a needle base;

wherein, 1, the needle base, 2, the tiny bulge on the needle base.

Fig. 3 is a schematic view of a needle tip guiding area of an ultrasound-guided nerve block puncture needle according to an embodiment of the present invention;

wherein, 1, the needle point guide area, 2, the puncture end, 3, the guide part, 4, the annular groove.

FIG. 4 is a schematic cross-sectional view of the guide portion;

wherein, 1, the needle tube, 2, the annular groove.

Detailed Description

The utility model discloses the people carries out deep research through extensive investigation, through a large amount of screening and tests, has developed the unique supersound guide nerve of structure and has blocked pjncture needle for the first time, the pjncture needle have the supersound reflection of reinforcing. The utility model discloses an supersound guide pjncture needle inside and outside wall is flat, and when the three-dimensional figure on the shallow of the supersound reinforcing section of pjncture needle was annular groove and in-line arrangement, the supersound reflectivity of pjncture needle was showing and is being higher than other three-dimensional figures, has improved the blurred defect of pjncture needle image under the supersound, has improved the accuracy and the security of puncture by a wide margin.

In the present invention, the terms "ultrasound-guided nerve block puncture needle", "puncture needle" and "guide puncture needle" are used interchangeably and refer to a puncture needle for ultrasound-guided puncture that includes a guide region annular groove and has high ultrasound reflection performance.

The terms "needle tip", "needle tip guiding area" and "needle tip" are used interchangeably and refer to an end (or referred to as a patient end) having a piercing end for piercing skin, tissue and a guide for reflecting ultrasonic echoes.

Clinically, the utility model discloses nerve block pjncture needle under the supersound guide can be used to the injection of drugs such as anesthetic or tranquilizer in the anesthesia field.

As shown in fig. 1, the utility model provides an ultrasonic guided nerve block puncture needle, wherein the needle body includes needle point guide area (1) and pipe shaft (2), and the needle body is fixed on needle base (3) to be connected with extension pipe (4) through needle base (3), extension pipe (4) other end connection needle tail (5), the needle tail is for connecting defeated, the interface of imbibition body.

The puncture needle is made of medical stainless steel 304 or 316 type stainless steel. The tenacity of the ultrasound guide region of the needle is such that it meets the specifications of GB18457 and preferably does not break beyond a specified number of bends, as measured according to GB 18457. The shape and the material of the needle body, which can be used for the puncture needle of the utility model, are not limited specially, as long as the needle body can be connected with the needle point guide area and the needle tail of the utility model. The needle body is generally a cylindrical tubular structure connected with a needle tip guide area. Generally, the diameter, wall and material of the needle are the same as those of the guide part of the needle tip guide area.

Extension pipe 4, can be used to the utility model discloses the needle base material of pjncture needle does not have special restriction, generally is medical plastics, and general material in the market is materials such as PVC, TPU, nylon, mainly prolongs the injection route for injection narcotic drug.

The needle tail 5 can be used for the puncture needle of the utility model, and the shape and the material of the needle tail are not specially limited. Generally, the needle tail of the present invention, also called as the operator end, can be configured to be connected to any clinically required fluid line or syringe for a general or special interface for injecting anesthetic.

As shown in figure 2, the needle base is provided with a concave surface, the concave-convex surface is a finger contact surface, dense small bulges are arranged on the surface of the needle base and preferably set to be small cylindrical bulges, and the dense small bulges can increase the friction force between the surface and the fingers when the puncture needle is stressed to pierce human tissues, so that the anti-skidding stabilizing effect is achieved, the vibration effect is realized when the needle enters the human tissues, and the accurate control is facilitated.

As shown in fig. 3, the needle tip guiding area (1) is located at the front part of the needle body and comprises a puncturing end (2) and a guiding part (3), the outer surface of the guiding part is provided with a plurality of annular grooves (4) which are arranged in a linear manner, and the annular grooves do not penetrate through the tube wall of the needle body.

FIG. 4 further shows the annular groove 2, the outer surface of the wall of the needle tube of the guiding part is provided with one or more ultrasonic enhancement sections, and the surface layer of the ultrasonic enhancement sections is provided with 4-8 rows of annular grooves; each row of the annular grooves is 3-20 and are arranged in a linear manner, and the radian of each row of the annular grooves is 45-90 degrees; the annular groove does not penetrate through the tube walls of the guide part and the puncture end;

preferably, the thickness of the tube wall of the guide part of the puncture needle is 0.1mm-0.2 mm; and the inner surface of the puncture end and the inner surface of the needle tube corresponding to the ultrasonic enhancement section are both smooth surfaces.

Preferably, the depth of the annular groove of the puncture needle guide part is 1/5-3/5 of the tube wall thickness of the guide part.

Preferably, the depth of the annular groove of the puncture needle guide part is 0.010mm-0.100 mm.

Preferably, the annular grooves of the puncture needle guide part are arranged in a linear manner in the guide area, and the distance between the annular grooves is 0.01-2.00 mm.

Preferably, the width of the annular groove of the puncture needle guide part is 0.05-0.40 mm; the width of the middle salient point is 0.02-0.20 mm;

preferably, the needle tip guide area of the puncture needle is positioned at 1-20mm of the needle tip.

Preferably, the puncture needle tube body of the puncture needle is free of resin coating or has resin coating.

According to the utility model discloses an supersound guide nerve blocks pjncture needle, when the direction of illumination of the measuring wave such as ultrasonic probe ultrasonic wave becomes any angle with the axle of pjncture needle, the formation of image that the pjncture needle can all be clear.

According to the present embodiment, the ultrasound-guided nerve block puncture needle can achieve the following effects.

(1) The utility model discloses a be equipped with multirow annular on the superficial layer of needle tubing main part guide portion sunken (the annular groove becomes the linear type at the guide zone and arranges and every row is 3-20 annular groove, encircles the guide zone and arranges for 4-8 rows of annular groove, every row of annular groove at a distance of radian 45-90 degrees;), the pipe wall of guide portion and puncture end can make the wall well reflect the ultrasonic wave, images the pjncture needle clearly. The defect of fuzzy imaging of the puncture needle under ultrasound is overcome, and the accuracy and safety of puncture are greatly improved.

(2) The utility model discloses can make the nerve block pjncture needle pierce human tissue in any direction, all can clearly form images.

(3) The utility model can still clearly image when the depth of the deep tissue of the human body is 10-15 cm.

(4) The annular depressions of the utility model are arranged in a linear type, and the convenience of production can be further improved by means of automatic equipment; the production cost is reduced.

(5) The utility model discloses an ultrasound-guided nerve block puncture needle is difficult for the rupture, and toughness is better.

(6) The utility model discloses a pipe inner wall not damaged of supersound guide nerve blocking pjncture needle, mechanical properties is good.

In a word, the utility model has the advantages of simple structure, clear, the location is accurate of formation of image, has very high clinical use value.

Other variations and modifications will occur to those skilled in the art from the foregoing disclosure and teachings and are, nevertheless, within the scope of the appended claims.

Claims (8)

1. An ultrasound guided nerve block puncture needle, comprising: needle body, needle base, extension pipe, backshank, wherein, the needle body include needle point guide area and pipe shaft, needle point guide area be located the needle body anterior, including puncture end and guide portion, the surface of guide portion be equipped with a plurality of annular grooves that become the linear type and arrange, annular groove not pierce through the pipe wall of needle body, the needle base establish needle body afterbody and connect the extension pipe, the needle base on be equipped with the concave surface, be equipped with a plurality of tiny archs on the concave surface, extension pipe terminal with the backshank is connected, the backshank is for being used for connecting defeated, the interface of imbibition body.

2. The ultrasound-guided nerve block puncture needle according to claim 1, wherein the linearly arranged annular grooves are arranged in parallel in 4 to 8 rows, each row is spaced from 45 to 90 degrees in radian, and each row has 3 to 20 annular grooves.

3. The ultrasound-guided nerve block puncture needle of claim 1, wherein the depth of the annular groove is 1/5-3/5 of the wall thickness of the guiding portion.

4. The ultrasound-guided nerve block puncture needle of claim 1, wherein the depth of the annular groove is 0.010mm to 0.100 mm.

5. The ultrasound-guided nerve block puncture needle according to claim 1, wherein the annular grooves are arranged in a straight line in the guide region and have a pitch of 0.01 to 2.00 mm.

6. The ultrasound-guided nerve block puncture needle according to claim 1, wherein the width of the annular groove is 0.05-0.4 mm; the width of the middle salient point is 0.02-0.2 mm.

7. The ultrasound-guided nerve block puncture needle of claim 1, wherein the needle tip guide area is located 1-20mm proximal to the needle tip.

8. The ultrasound-guided nerve block puncture needle of claim 1, wherein the surface of the needle body of the puncture needle is provided with no resin coating or resin coating.

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