WO2023040471A1

WO2023040471A1 - Ultrasound-guided nerve block needle

Info

Publication number: WO2023040471A1
Application number: PCT/CN2022/108055
Authority: WO
Inventors: 张洪杰
Original assignee: 贝普医疗科技股份有限公司
Priority date: 2021-09-14
Filing date: 2022-07-26
Publication date: 2023-03-23
Also published as: CN113598911A

Abstract

An ultrasound-guided nerve block needle comprises a needle holder (2) and a needle tube (1). A front end of the needle tube (1) is cut along a diagonal direction to form a needle tip bevel (11). A front end of the needle tip bevel (11) is cut symmetrically in the vertical direction to form a faceted tip (111). The faceted tip (111) is in the shape of a bevel. A plurality of reflective recesses (12) are formed on an outer side of the needle tube (1). The center of the needle holder (2) is hollow in an axial direction. The rear end of the needle tube (1) is positionally limited to a step on the inner wall of the needle holder (2). A hole (21) is formed at the front end of the needle holder (2). The needle holder (2) is quadrilateral. A recess (23) is formed on one side of the needle holder (2). Both sides of the needle holder (2) adjacent to the recess (23) are provided with anti-slip surfaces (22). By providing corresponding recess structures at the needle tube (1) and the needle holder (2), the ultrasound-guided nerve block needle can be clearly visualized under ultrasound, and can also be easily distinguished from nerve tissue to determine the correct position of a puncture needle.

Description

An ultrasound-guided nerve block needle

technical field

The invention relates to the field of medical instruments, in particular to an ultrasound-guided nerve block needle.

Background technique

In the modern medical field, ultrasound-guided positioning technology is commonly used to find the location of the nerve to complete the anesthesia work of nerve block, and use ultrasound reflection to complete puncture and inject anesthetic under real-time ultrasound image monitoring. Waiting to find the way to the nerves.

In the past, ordinary puncture needles used under ultrasonic images showed clear images in superficial parts, but in deeper parts or when the puncture angle was large, ultrasonic waves tended to form mirror reflections, resulting in unclear images. At present, guide areas with various shapes have been adopted. To increase the puncture needle of ultrasonic reflection intensity; for example: CN107343812 A discloses a puncture needle with dotted depressions, but studies have shown that when this kind of puncture needle is used in deep tissues of the human body (more than 10cm depth), there will be blurred images. Conditions, and images of irregular ultrasound-guided graphic structures are likely to cause visual interference.

To sum up, the existing puncture needles have the problems of unclear ultrasonic images and difficult development, and it is difficult to grasp the correct position of the puncture needle.

Contents of the invention

The object of the present invention is to provide an ultrasound-guided nerve block needle.

In order to achieve the above object, technical scheme of the present invention is:

An ultrasonic-guided nerve block needle, which includes a needle base and a needle tube, is characterized in that the front end of the needle tube is cut along a diagonal direction and provided with a needle point bevel, and the front end of the needle point bevel is cut symmetrically up and down to form a faceted tip. The tip of the facet is in the shape of a bevel, a number of reflective grooves are provided on the outside of the needle tube, the center of the needle seat penetrates axially, and the rear end of the needle tube is limited to a step on the inner wall of the needle seat.

Further, two, three or four rows of reflective grooves are provided on the outer side of the needle tube along the axial direction, and each row of reflective grooves includes one, two or more reflective grooves.

Further, when a row of reflective grooves includes a plurality of reflective grooves, the reflective grooves are equally spaced along the axial direction.

Further, the needle tube is provided with a row of reflective grooves every 90° along the radial direction, and the number of reflective grooves in each row of reflective grooves is different.

Further, the column of reflective grooves corresponding to the needle tip slope along the axial direction includes four reflective grooves.

Further, the outer side of the needle tube is axially provided with a row of reflective grooves, the reflective grooves are axially corresponding to the slope of the needle tip, and the number of the reflective grooves includes one, two or more.

Further, the reflective groove includes a first reflective surface, a second reflective surface, a third reflective surface, a fourth reflective surface and a fifth reflective surface, the first reflective surface, the second reflective surface, the third reflective surface , the bottoms of the fourth reflective surface and the fifth reflective surface meet at one point.

Further, the first to fifth reflective surfaces are all planes.

Further, the first reflective surface to the fifth reflective surface are all non-planar.

Further, the needle tube is coated with a resin coating outside the slope of the needle tip.

Further, the reflective groove is formed by electric discharge, stamping, laser, extrusion or precision engraving.

Further, a hole is provided at the front end of the needle holder, the needle holder is quadrilateral, a groove is respectively provided on one side of the needle holder, and anti-slip surfaces are provided on both sides of the needle holder adjacent to the groove.

Further, the anti-skid surface includes several triangular arrow-shaped anti-skid grooves, and the anti-skid grooves are arranged at equal intervals along the axial direction.

Further, the groove is on the same side as the slope of the needle tip.

The ultrasound-guided nerve block needle of the present invention can not only be clearly visualized under ultrasound, but also be easily distinguished from nerve tissue by providing corresponding groove structures on the needle tube and the needle seat, so as to grasp the correct position of the puncture needle.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the first embodiment of the present invention;

2 is a schematic structural view of the needle tube of the first embodiment of the present invention;

Fig. 3 is another structural schematic diagram of the needle tube of the first embodiment of the present invention;

Fig. 4 is a schematic structural view of a diamond-shaped reflective groove of the present invention;

Fig. 5 is a schematic structural view of the frusto-conical reflective groove of the present invention;

Fig. 6 is a schematic structural view of a quadrangular pyramid reflective groove of the present invention;

Fig. 7 is a structural schematic diagram of a hexagonal pyramid reflective groove of the present invention;

Fig. 8 is a schematic structural view of the trapezoidal reflective groove of the present invention;

Fig. 9 is a cross-sectional structure diagram of the needle hub of the present invention;

Fig. 10 is a side structural view of the needle hub of the present invention;

Fig. 11 is a three-dimensional structure diagram of the needle hub of the present invention;

Fig. 12 is a schematic diagram of the overall structure of the second embodiment of the present invention;

Fig. 13 is a schematic structural view of the needle tube according to the second embodiment of the present invention;

Fig. 14 is another structural schematic diagram of the needle tube according to the second embodiment of the present invention.

Reference signs:

1 needle tube, 2 needle seats,

11 tip bevels, 12 reflective grooves, 111 faceted tips,

21 holes, 22 non-slip surfaces, 23 grooves.

Detailed ways

The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

This embodiment discloses an ultrasound-guided nerve block needle, which performs operations such as puncture and drug injection under the observation of ultrasound images. A faceted tip 111 with an inclination angle, the outside of the needle tube 1 is provided with a reflective groove 12, the shape of the reflective groove 12 is shown in Figures 4 to 8, wherein Figure 4 is a diamond-shaped reflective groove 12, and Figure 5 is a truncated circular groove Reflective grooves 12 , FIG. 6 shows quadrangular pyramid reflective grooves 12 , FIG. 7 shows hexagonal pyramid reflective grooves 12 , and FIG. 8 shows trapezoidal reflective grooves 12 .

Wherein, the diamond-shaped reflective groove 12 has the first reflective surface to the fifth reflective surface, and the first reflective surface to the fifth reflective surface are all planar or all are non-planar, and can also be a mixture of planar and non-planar; different forms varies in the number of reflective surfaces, all of which have a bottom intersection.

Figures 4 to 8 show the effects of each reflection form, and the incident light is reflected by the form of the reflection area to become a wave parallel to the incident wave and then emitted.

Two, three or four rows of reflective grooves 12 can be distributed on the circumference of the needle tube 1, and each row of reflective grooves 12 includes one, two or more reflective grooves 12, and the reflective grooves 12 can be processed by electric discharge machining, stamping processing, laser processing, extrusion processing or engraving processing.

The front end of the needle tube 1 is cut in a diagonal direction and provided with a needle point bevel 11, and the front end of the needle point bevel 11 is cut symmetrically up and down to form a facet tip 111, which is in the shape of a bevel; the needle point bevel 11 adopts a short bevel design, which effectively reduces nerve cutting. Nerve damage can be avoided when the approach is adjusted. The beveled surface 11 of the needle tip has two faceted tips 111 with inclination angles, which is conducive to breaking the skin and increasing the sense of fascia breakthrough.

The reflective grooves 12 are arranged on the circumference of the needle tube 1 in multiple rows at equal intervals. The reflective grooves 12 receive ultrasonic waves and emit ultrasonic waves parallel or substantially parallel to the received ultrasonic waves.

The needle tube 1 is provided with a row of reflective grooves 12 at intervals of 90° in the radial direction, and the number of reflective grooves 12 corresponding to each row of reflective grooves 12 is different, which is convenient for identifying the direction of the needle tip slope 11, wherein the needle tip slope 11 corresponds to four reflective grooves Slot 12.

As shown in Figure 9, the front end of the needle base 2 is provided with a hole 21, the needle base 2 is quadrilateral, as shown in Figure 10 and Figure 11, a groove 23 is respectively provided on one side of the needle base 2, the needle base 2 and the groove 23 The adjacent two sides are provided with anti-slip surfaces 22. The anti-slip surfaces 22 include several anti-slip grooves in the shape of triangular arrows. The anti-slip grooves are arranged at equal intervals along the axial direction.

The anti-slip surface 22 adopts an arrow-shaped anti-slip design, and the feedback of the needle insertion process is sensitive. The fingertips feel obvious when breaking through the fascia.

In another embodiment, as shown in FIGS. 12 to 14 , the reflective groove 12 is provided with distributed reflective grooves 12 only on the side corresponding to the needle tip slope 11 , and the number of corresponding reflective grooves 12 is one or more. The function of the reflective groove 12 on this surface is that under the ultrasonic image, only the surface corresponding to the needle tip slope 11 will be developed, and it will not be developed once it is rotated by a certain angle, which is convenient for doctors to distinguish between the nerve tissue and the needle tip slope 11 in clinical practice. distinguish.

The needle tube 1 is coated with a resin coating in a region other than the bevel 11 of the needle tip.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims

An ultrasonic-guided nerve block needle, which includes a needle base and a needle tube, is characterized in that the front end of the needle tube is cut along a diagonal direction and provided with a needle point bevel, and the front end of the needle point bevel is cut symmetrically up and down to form a faceted tip. The tip of the facet is in the shape of a bevel, a number of reflective grooves are provided on the outside of the needle tube, the center of the needle seat penetrates axially, and the rear end of the needle tube is limited to a step on the inner wall of the needle seat.
The ultrasonic-guided nerve block needle according to claim 1, wherein two, three or four rows of reflective grooves are arranged on the outer side of the needle tube along the axial direction, and each row of reflective grooves includes one, two or multiple reflective grooves.
The ultrasound-guided nerve block needle according to claim 2, wherein when a row of reflective grooves includes a plurality of reflective grooves, the reflective grooves are equally spaced along the axial direction.
The ultrasound-guided nerve block needle according to claim 3, wherein the needle tube is provided with a row of reflective grooves every 90° along the radial direction, and the number of reflective grooves in each row of reflective grooves is different.
The ultrasound-guided nerve block needle according to claim 4, characterized in that the column of reflective grooves corresponding to the needle point bevel along the axial direction includes four reflective grooves.
The ultrasound-guided nerve block needle according to claim 1, wherein a row of reflective grooves is provided on the outer side of the needle tube in the axial direction, and the reflective grooves correspond to the slope of the needle tip in the axial direction, and the reflective grooves The number of grooves includes one, two or more.
The ultrasound-guided nerve block needle according to claim 1, 2 or 6, wherein the reflective groove comprises a first reflective surface, a second reflective surface, a third reflective surface, a fourth reflective surface and a fifth reflective surface. As for the reflective surface, the bottoms of the first reflective surface, the second reflective surface, the third reflective surface, the fourth reflective surface and the fifth reflective surface meet at one point.
The ultrasound-guided nerve block needle according to claim 7, wherein the first to fifth reflective surfaces are all planes.
The ultrasound-guided nerve block needle according to claim 7, wherein the first to fifth reflective surfaces are all non-planar.
The ultrasound-guided nerve block needle according to claim 1, characterized in that, the part of the needle tube other than the bevel of the needle tip is coated with a resin coating.
The ultrasound-guided nerve block needle according to claim 1, wherein the reflective groove is formed by electric discharge, stamping, laser, extrusion or precision carving.
The ultrasonic-guided nerve block needle according to claim 1, wherein a hole is provided at the front end of the needle holder, the needle holder is quadrilateral, and a groove is respectively provided on one side of the needle holder, and the needle holder Both sides adjacent to the seat and the groove are provided with non-slip surfaces.
The ultrasound-guided nerve block needle according to claim 12, wherein the anti-slip surface includes several triangular arrow-shaped anti-slip grooves, and the anti-slip grooves are arranged at equal intervals along the axial direction.
The ultrasound-guided nerve block needle according to claim 12, wherein the groove is located on the same side as the bevel of the needle tip.