CN111658083A - Dyeing needle - Google Patents

Abstract

The invention relates to the technical field of medical equipment, and discloses a dyeing needle head which comprises a needle head body and a needle core; the needle head body comprises a needle stem, a pore canal penetrating through two ends of the needle stem is arranged inside the needle stem, and an orifice communicated with the pore canal is arranged at the front end of the needle stem; the needle core comprises a needle rod, the needle rod is slidably arranged in the pore channel in a penetrating mode, the front end of the needle rod extends out of the pore channel from the hole, and the front end of the needle rod is provided with a conical needle point. Compared with the prior art, the dyeing needle has high safety, can not cause serious damage to the fiber ring, is favorable for postoperative healing of the fiber ring, and can also avoid damage to other tissues caused by misoperation.

Description

a dye needle

technical field

The invention relates to the technical field of medical equipment, in particular to a dyeing needle.

Background technique

Percutaneous endoscopic technique has become a common surgical procedure for the treatment of lumbar disc herniation due to its advantages of less injury, less bleeding, and shorter recovery time. In order to find the annulus fibrosus rupture, the target compression site, and distinguish the prolapsed nucleus pulposus from the nerve root more quickly under the microscope, the doctors will inject the disc contrast agent and add methylene blue staining solution to stain the intervertebral disc.

At present, the dyed needles used clinically are similar to ordinary syringe needles, and their tips all have sharp oblique cuts. Therefore, when the dyed needles pierce the annulus fibrosus, a hard-to-recover wound will be formed on the surface of the annulus fibrosus, and the wound changes the fibers. The surface tension of the annulus is not conducive to the postoperative healing of the annulus fibrosus.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a dyeing needle with high safety and no serious damage to the annulus fibrosus.

In order to achieve the above object, the present invention provides a dyeing needle, which comprises:

a needle body, the needle body includes a needle stem, the inside of the needle stem has a hole running through both ends of the needle stem, and the front end of the needle stem has an orifice that communicates with the hole;

Needle core, the needle core includes a needle bar, the needle bar is slidably penetrated in the hole, and the front end of the needle bar extends out of the hole from the hole, and the needle bar is The front end has a conical tip.

In some embodiments of the present application, the needle body further includes a needle plug, the front end of the needle plug is connected to the rear end of the needle stem, and the inside of the needle plug has a cavity communicated with the hole, The rear end of the needle plug has an opening communicated with the cavity.

In some embodiments of the present application, the needle core further includes a needle cap, the front end of the needle cap is connected to the rear end of the needle bar, and the needle cap is fixed at the opening.

In some embodiments of the present application, the apex angle of the needle tip is 30-60°.

In some embodiments of the present application, the apex angle of the needle tip is 45°.

In some embodiments of the present application, the outer diameter of the needle barrel is 1.0-1.6 mm.

In some embodiments of the present application, the outer diameter of the needle bar is 0.6-1.2 mm.

In some embodiments of the present application, the length of the needle stem is 330-360 mm.

In some embodiments of the present application, the length of the needle bar extending out of the hole from the hole is 2-5 mm.

In some embodiments of the present application, the surface of the needle barrel has graduations.

The present invention provides a dyeing needle, and compared with the prior art, its beneficial effects are:

When using, the needle tip of the needle rod is inserted into the annulus fibrosus of the target intervertebral disc first, but the needle stem does not penetrate; then the needle core is pulled out, leaving a small hole on the annulus fibrosus opened by the needle tip at this time, and the The small hole is facing the hole of the needle stem; then, through the hole of the needle stem and the above-mentioned small hole, inject the intervertebral disc contrast agent into the target intervertebral disc and add methylene blue staining solution to achieve staining; finally pull out the needle body to complete the staining operate. Based on this, because the dyeing needle provided by the present invention only opens a very small hole on the fibrous annulus through the needle tip of the needle core, and does not cut the fibrous annulus, it will not change the surface tension of the fibrous annulus, causing damage to the fibrous annulus. Because the annulus fibrosus is an elastic soft tissue, when the needle body is pulled out, the small hole opened by the needle tip of the needle core will gradually shrink, which is beneficial to the postoperative healing of the annulus fibrosus. In addition, the dyeing needle provided by the present invention can also avoid damage to other tissues caused by improper operation.

Description of drawings

FIG. 1 is a schematic structural diagram of a dyeing needle according to an embodiment of the present invention.

In the figure: 1. Needle body; 11. Needle stem; 12. Needle plug; 2. Needle core; 21. Needle stem; 211, Needle tip; 22, Needle cap.

Detailed ways

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

It should be understood that in the description of this application, the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying The device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application. The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features, that is, defined with "first", "first" and "second". A feature of "two" may expressly or implicitly include one or more of that feature. Also, unless stated otherwise, "plurality" means two or more.

It should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection Connection, or integral connection; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood in specific situations.

As shown in FIG. 1, an embodiment of the present invention provides a dyeing needle, which includes a needle body 1 and a needle core 2; the needle body 1 includes a needle stem 11, and the inside of the needle stem 11 has holes running through both ends of the needle stem 11. The front end has an orifice that communicates with the hole; the needle core 2 includes a needle bar 21, the needle bar 21 is slidably passed through the hole, and the front end of the needle bar 21 extends out of the hole from the orifice, and the front end of the needle bar 21 has a Conical tip 211.

When in use, first pierce the needle tip 211 of the needle rod 21 into the annulus fibrosus of the target intervertebral disc, while the needle stem 11 does not pierce it; then pull out the needle core 2, leaving a hole on the annulus fibrosus stretched by the needle tip 211. A small hole, and the small hole is facing the hole of the needle stem 11; then, through the hole of the needle stem 11 and the above-mentioned small hole, inject the intervertebral disc contrast agent into the target intervertebral disc and add methylene blue staining solution to achieve staining; finally Pull out the needle body 1 to complete the dyeing operation.

Compared with the prior art, because the dyeing needle provided by the present invention only opens an extremely small hole on the fibrous annulus through the needle tip 211 of the needle core 2, and does not cut the fibrous annulus, the surface of the fibrous annulus will not be changed. tension, the damage to the annulus fibrosus is extremely small; and because the annulus fibrosus is an elastic soft tissue, when the needle body 1 is pulled out, the small hole opened by the needle tip 211 of the needle core 2 will gradually shrink, which is beneficial to the annulus fibrosus. Postoperative healing. In addition, the dyeing needle provided by the present invention can also avoid damage to other tissues caused by improper operation.

As shown in FIG. 1 , in some embodiments, the needle body 1 further includes a needle plug 12, the front end of the needle plug 12 is connected to the rear end of the needle stem 11, the inside of the needle plug 12 has a cavity communicated with the orifice, the needle The rear end of the plug 12 has an opening that communicates with the cavity. In this way, after the needle core 2 is pulled out, the luer connector can be used to connect the external pipeline to the opening, so as to realize the injection of the contrast agent of the intervertebral disc and the addition of the methylene blue staining solution.

As shown in FIG. 1, in some embodiments, the needle core 2 further includes a needle cap 22, the front end of the needle cap 22 is connected to the rear end of the needle bar 21, and the needle cap 22 is fixed at the opening of the needle plug 12, and also That is, the needle shaft 21 passes through the cavity of the needle plug 12 . Based on this, the needle core 2 is relatively fixed with the needle body 1, which can prevent the needle body 1 from sliding forward when the needle tip 211 of the needle bar 21 pierces the annulus fibrosus, and protect the annulus fibrosus from being damaged by the needle stem 11; When the needle core 2 is used, it is only necessary to turn the needle cap 22, and the operation is more convenient.

As shown in FIG. 1 , in some embodiments, the apex angle of the needle tip 211 is 30-60°; the length of the needle bar 21 extending out of the hole from the orifice is 2-5 mm, and the length of the needle stem 11 is 330-360 mm; The outer diameter of the needle bar 21 is 0.6 to 1.2 mm, and the outer diameter of the needle barrel 11 is 1.0 to 1.6 mm. Among them, 45° is the most preferred angle of the apex angle of the needle tip 211; 3mm is the most preferred length of the needle bar 21 extending out of the hole from the orifice, 337mm is the most preferred length of the needle stem 11; 1mm is the most preferred length of the needle bar 21 The outer diameter, 1.4 mm, is the most preferred outer diameter of the needle stem 11, and at this time, the hole diameter of the hole is 1 mm. It should be noted that the above-mentioned outer diameter and bore diameter have a tolerance of ±0.05mm.

As shown in FIG. 1 , in some embodiments, the surface of the needle stem 11 has a scale formed by laser marking, so as to observe the depth of the dyed needle into the intervertebral space of responsibility.

The method of using the dyeing needle provided in the embodiment of the present invention is as follows:

S1. Use the guide cannula to extend the dyeing needle into the intervertebral space of responsibility;

S2, find the target intervertebral disc to be treated under the microscope, and pierce the dye needle into the annulus fibrosus, so that the needle tip 211 of the needle rod 21 penetrates into the annulus fibrosus, but the needle stem 11 does not penetrate;

S3. Pull out the needle core 2, leaving a small hole opened by the needle tip 211 on the fiber annulus at this time;

S4, using a Luer connector to connect the external pipeline to the opening of the needle plug 12, and the intervertebral disc contrast agent and the methylene blue staining solution enter the target intervertebral disc through the hole of the needle stem 11 and the above-mentioned small hole to realize staining;

S5. Pull out the needle body 1.

To sum up, the embodiment of the present invention provides a dyeing needle, which includes a needle body 1 and a needle core 2. The needle barrel 11 of the needle head body 1 has holes running through both ends thereof, and the front end of the needle barrel 11 has holes that communicate with the holes. The hole, the needle bar 21 of the needle core 2 is slidably inserted in the hole, and the front end of the needle bar 21 extends out of the hole from the hole, and the front end of the needle bar 21 also has a conical needle tip 211 . Compared with the prior art, the dyeing needle has high safety, does not cause serious damage to the annulus fibrosus, is beneficial to the postoperative healing of the annulus fibrosus, and can also avoid damage to other tissues caused by improper operation.

It should be pointed out that the dyeing needle provided in the embodiment of the present invention can also be applied to the dyeing operation of the body structure tissue other than the intervertebral disc.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principle of the present invention, several improvements and replacements can be made. These improvements and replacements It should also be regarded as the protection scope of the present invention.

Claims (10)

1. A dyeing needle, comprising:

the needle comprises a needle body, the needle body comprises a needle stem, the interior of the needle stem is provided with a pore canal penetrating through two ends of the needle stem, and the front end of the needle stem is provided with an orifice communicated with the pore canal;

the needle core comprises a needle rod, the needle rod is slidably arranged in the pore channel in a penetrating mode, the front end of the needle rod extends out of the pore channel from the orifice, and the front end of the needle rod is provided with a conical needle point.

2. The dyeing needle according to claim 1, characterized in that:

the needle head body further comprises a pintle, the front end of the pintle is connected to the rear end of the needle stem, a cavity communicated with the pore passage is formed in the pintle, and an opening communicated with the cavity is formed in the rear end of the pintle.

3. Dyeing needle according to claim 2, characterized in that:

the needle core further comprises a needle cap, the front end of the needle cap is connected to the rear end of the needle rod, and the needle cap is fixed at the opening.

4. The dyeing needle according to claim 1, characterized in that:

the apex angle of the needle point is 30 ~ 60.

5. Dyeing needle according to claim 4, characterized in that:

the apex angle of the needle tip is 45 degrees.

6. The dyeing needle according to claim 1, characterized in that:

the outer diameter of the needle stalk is 1.0-1.6 mm.

7. The dyeing needle according to claim 1, characterized in that:

the outer diameter of the needle rod is 0.6-1.2 mm.

8. The dyeing needle according to claim 1, characterized in that:

the length of the needle stalk is 330-360 mm.

9. The dyeing needle according to claim 1, characterized in that:

the length of the needle rod extending out of the pore channel from the orifice is 2-5 mm.

10. The dyeing needle according to claim 1, characterized in that:

the surface of the needle stalk is provided with scales.

Images