CN112823756A

CN112823756A - Ultrasonic guided nerve block puncture needle

Info

Publication number: CN112823756A
Application number: CN201911149952.9A
Authority: CN
Inventors: 王赫; 孙恩祥
Original assignee: Shanghai Mingzhou Medical Technology Co ltd
Current assignee: Shanghai Mingzhou Medical Technology Co ltd
Priority date: 2019-11-21
Filing date: 2019-11-21
Publication date: 2021-05-21

Abstract

The invention provides an ultrasonic-guided nerve block puncture needle, which can enhance ultrasonic reflection and further realize clear imaging. 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 invention relates to the field of anesthesia of medical instruments, 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, 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.

Disclosure of Invention

The invention aims to provide 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 ultrasonic guided nerve block puncture needle, when the irradiation direction of the detection waves of ultrasonic waves of an ultrasonic probe and the like and the axis of the puncture needle form any angle, the puncture needle can clearly image, so that an operator can conveniently observe the movement track of the needle point and control the needle point to accurately reach a destination.

Drawings

FIG. 1 is a schematic view of an ultrasound guided nerve block 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 the needle tip guiding region of an ultrasonically 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.

Fig. 5 is a magnified image of the needle tip guiding region.

Detailed Description

The inventor conducts extensive investigation and intensive research, and through a large amount of screening and testing, firstly develops an ultrasonic guide nerve block puncture needle with a unique structure, wherein the puncture needle has enhanced ultrasonic reflection. The ultrasonic guide puncture needle has flat inner and outer walls, and when the three-dimensional figures on the shallow surface of the ultrasonic enhancement section of the puncture needle are annular grooves and are arranged in a straight line, the ultrasonic reflectivity of the puncture needle is obviously higher than that of other three-dimensional figures, so that the defect of blurred images of the puncture needle under ultrasound is overcome, and the accuracy and the safety of puncture are greatly improved.

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

The terms "needle tip", "needle tip guiding area", "needle tip" are used interchangeably to 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, i.e., a piercing needle tip of the present invention.

Clinically, the nerve block puncture needle under the ultrasonic guidance can be used for injecting drugs such as anesthetic or tranquilizer in the field of anesthesia.

As shown in figure 1, the ultrasonic-guided nerve block puncture needle comprises a needle body and a needle guide area (1) and a tube body (2), wherein the needle body is fixed on a needle base (3) and is connected with an extension tube (4) through the needle base (3), the other end of the extension tube (4) is connected with a needle tail (5), and the needle tail is an interface for connecting transfusion and liquid absorption bodies.

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 material of the needle body, which can be used in the puncture needle of the present invention, are not particularly limited as long as they are members capable of connecting the needle tip guide region of the present invention and the needle tail. 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.

The extension tube 4 is made of medical plastics without special limitation, and is made of PVC, TPU, nylon and the like which are commonly used in the market, and mainly used for injecting anesthetic to prolong the injection path.

The shape and material of the needle tail 5, which can be used in the puncture needle of the present invention, are not particularly limited. In general, the needle tail of the present invention, also referred to as the operator end, is a universal or dedicated interface for injecting anesthetic drugs and may be configured to connect to any clinically desirable fluid line or syringe.

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 ultrasonic guided nerve block puncture needle, when the irradiation direction of the detection wave of ultrasonic waves of an ultrasonic probe and the like forms any angle with the axis of the puncture needle, the puncture needle can clearly image.

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

(1) According to the invention, multiple rows of annular depressions (the annular grooves are linearly arranged in the guide area, each row is 3-20 annular grooves, the annular grooves are arranged around the guide area in 4-8 rows, and the radian of each row of annular grooves is 45-90 degrees) are arranged on the shallow surface layer of the guide part of the needle tube body, so that ultrasonic waves can be well reflected by the wall surface of the guide part and the tube wall of the puncture end, and the puncture needle can be clearly imaged. 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 invention can make the nerve block puncture needle puncture the human tissue in any direction and can clearly image.

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

(4) The annular depressions are linearly arranged, and the convenience of production can be further improved by means of automatic equipment; the production cost is reduced.

(5) The ultrasonic-guided nerve block puncture needle is not easy to break and has better toughness.

(6) The tube inner wall of the ultrasonic guided nerve block puncture needle has no damage and good mechanical property.

In a word, the invention has the advantages of simple structure, clear imaging, accurate positioning and the like, and has 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

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.