阅读说明：本技术 一种染色针头 (Dyeing needle ) 是由 江晓兵 梁德 何嘉辉 林少豪 唐晶晶 崔健超 任辉 于 2020-05-26 设计创作，主要内容包括：本发明涉及医疗设备技术领域,公开了一种染色针头,其包括针头本体和针芯；针头本体包括针梗,针梗的内部具有贯穿其两端的孔道,针梗的前端具有与孔道相连通的孔口；针芯包括针杆,针杆可滑动地穿设于孔道内,且针杆的前端从孔口伸出孔道外,针杆的前端具有圆锥形的针尖。与现有技术相比,该染色针头安全性高,不会对纤维环造成严重损伤,有利于纤维环的术后愈合,并且还可避免因操作不当对其他组织造成的损伤。(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.)

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.

Technical Field

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

Background

Percutaneous endoscopic techniques have become a common surgical procedure for treating lumbar intervertebral disc protrusion due to their advantages of small injury, less bleeding, short recovery time, etc. In order to more quickly find the annular rupture, the target site of compression, and the nucleus pulposus and the nerve root under the microscope, doctors inject an intervertebral disc contrast agent and add methylene blue staining solution to stain the intervertebral disc.

At present, the dyeing needle used clinically is similar to a common syringe needle, and the sharp inclined cut is formed at the tip of the dyeing needle, so that after the dyeing needle penetrates into a fiber ring, a wound which is difficult to recover is formed on the surface of the fiber ring, the surface tension of the fiber ring is changed by the wound, and the postoperative healing of the fiber ring is not facilitated.

Disclosure of Invention

The invention aims to provide a dyeing needle head which is high in safety and cannot cause serious damage to fiber rings.

In order to achieve the above object, the present invention provides a dyeing needle head 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.

In some embodiments of the present application, the needle body further includes a pintle, a front end of the pintle is connected to a rear end of the needle stem, a cavity communicated with the pore passage is formed inside the pintle, and an opening communicated with the cavity is formed at a rear end of the pintle.

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

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

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

In some embodiments of the present application, the needle stem has an outer diameter of 1.0 to 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 needle stem has a length of 330 to 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 needle stem has a surface with a scale.

The invention provides a dyeing needle head, which has the following beneficial effects compared with the prior art:

when in use, the needle tip of the needle rod is firstly penetrated into the fibrous ring of the target intervertebral disc, but the needle peduncle is not penetrated; then the needle core is pulled out, a small hole which is opened by the needle point is left on the fiber ring at the moment, and the small hole is opposite to the pore canal of the needle stalk; then, injecting an intervertebral disc contrast agent and adding methylene blue staining solution into the target intervertebral disc through the pore canal of the needle stalk and the small hole to realize staining; and finally, pulling out the needle head body to finish the dyeing operation. Based on this, the dyeing needle provided by the invention only props up a tiny hole on the fiber ring through the needle point of the needle core and does not cut the fiber ring, so that the surface tension of the fiber ring is not changed, and the damage to the fiber ring is very small; and because the fibrous ring is an elastic soft tissue, after the needle head body is pulled out, the small hole propped by the needle point of the needle core can be gradually contracted, which is beneficial to the postoperative healing of the fibrous ring. In addition, the dyeing needle head provided by the invention can also avoid damage to other tissues caused by improper operation.

Drawings

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

In the figure: 1. a needle body; 11. needle peduncle; 12. a pintle; 2. a needle core; 21. a needle bar; 211. a needle tip; 22. a needle cap.

Detailed Description

The technical solutions in the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that in the description of the present application, the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present application. The terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, i.e. a feature defined as "first", "second" may explicitly or implicitly include one or more of such features. Further, unless otherwise specified, "a plurality" means two or more.

It should be noted that, in the description of the present application, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

As shown in fig. 1, the embodiment of the present invention provides a dyeing needle, which includes a needle body 1 and a core 2; the needle head body 1 comprises a needle stem 11, a pore canal penetrating through two ends of the needle stem 11 is arranged inside the needle stem 11, and an orifice communicated with the pore canal is arranged at the front end of the needle stem 11; the needle core 2 comprises a needle rod 21, the needle rod 21 is slidably arranged in the hole, the front end of the needle rod 21 extends out of the hole from the hole, and the front end of the needle rod 21 is provided with a conical needle point 211.

When in use, the needle point 211 of the needle rod 21 is firstly penetrated into the fibrous ring of the target intervertebral disc, but the needle stalk 11 is not penetrated; then the needle core 2 is pulled out, a small hole which is opened by the needle point 211 is left on the fiber ring at the moment, and the small hole is opposite to the pore canal of the needle stem 11; then, injecting an intervertebral disc contrast agent and adding methylene blue staining solution into the target intervertebral disc through the pore canal of the needle stalk 11 and the small hole to realize staining; and finally, pulling out the needle head body 1 to finish the dyeing operation.

Compared with the prior art, the dyeing needle provided by the invention has the advantages that the dyeing needle only props up a tiny hole on the fiber ring through the needle point 211 of the needle core 2 and does not cut the fiber ring, so that the surface tension of the fiber ring cannot be changed, and the damage to the fiber ring is tiny; and because the fibrous ring is an elastic soft tissue, after the needle head body 1 is pulled out, the small hole propped by the needle point 211 of the needle core 2 can be gradually contracted, which is beneficial to the postoperative healing of the fibrous ring. In addition, the dyeing needle head provided by the invention can also avoid damage to other tissues caused by improper operation.

In some embodiments, as shown in fig. 1, the needle body 1 further comprises a pintle 12, a front end of the pintle 12 is connected to a rear end of the needle stem 11, the inside of the pintle 12 has a cavity communicated with the duct, and a rear end of the pintle 12 has an opening communicated with the cavity. In this way, after the needle core 2 is pulled out, an external pipeline can be connected to the opening by using a luer connector, so that the injection of the intervertebral disc contrast agent and the addition of the methylene blue staining solution are realized.

As shown in fig. 1, in some embodiments, the stylet 2 further comprises a needle cap 22, a front end of the needle cap 22 is connected to a rear end of the needle shaft 21, and the needle cap 22 is fixed at an opening of the pintle 12, that is, the needle shaft 21 passes through a cavity of the pintle 12. Based on this, the needle core 2 and the needle body 1 are relatively fixed, so that the needle body 1 can be prevented from sliding forwards when the needle tip 211 of the needle rod 21 penetrates into a fiber ring, and the fiber ring is protected from being damaged by the needle stalk 11; in addition, when the needle core 2 needs to be pulled out, only the needle cap 22 needs to be pulled, and the operation is more convenient.

As shown in FIG. 1, in some embodiments, the tip angle of the needle 211 is 30-60 °; the length of the needle rod 21 extending out of the pore channel 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 0.6-1.2 mm, and the outer diameter of the needle stem 11 is 1.0-1.6 mm. Wherein 45 ° is the most preferred angle of the apex angle of the needle tip 211; 3mm is the most preferable length of the needle rod 21 extending out of the pore canal from the pore canal, 337mm is the most preferable length of the needle stem 11; 1mm is the most preferable outer diameter of the needle bar 21, 1.4mm is the most preferable outer diameter of the needle stem 11, and in this case, the pore diameter of the pore canal is 1 mm. It is noted that the outer diameter and the bore diameter described above each have a tolerance of ± 0.05 mm.

As shown in fig. 1, in some embodiments, the needle shaft 11 has a laser marked scale on its surface to facilitate viewing the depth of the dyed needle tip into the responsible intervertebral space.

The application method of the dyeing needle provided by the embodiment of the invention comprises the following steps:

s1, extending the dyeing needle into the responsible intervertebral space by using the guide sleeve;

s2, finding the target intervertebral disc to be treated under the mirror, and pricking the dyeing needle to the fibrous ring to make the needle point 211 of the needle rod 21 prick into the fibrous ring, but not the needle stalk 11;

s3, pulling out the needle core 2, wherein a small hole propped by the needle point 211 is left on the fiber ring;

s4, connecting an external pipeline to the opening of the pintle 12 by using a luer connector, and enabling the intervertebral disc contrast agent and the methylene blue staining solution to enter the target intervertebral disc through the pore canal of the needle stalk 11 and the small hole to achieve staining;

s5, pulling out the needle body 1.

To sum up, the embodiment of the present invention provides a dyeing needle head, which includes a needle head body 1 and a needle core 2, wherein the needle stem 11 of the needle head body 1 has a hole penetrating through both ends thereof, the front end of the needle stem 11 has a hole communicated with the hole, the needle rod 21 of the needle core 2 slidably penetrates through the hole, the front end of the needle rod 21 extends out of the hole from the hole, and the front end of the needle rod 21 also has a conical needle point 211. 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.

It should be noted that the staining needle provided by the embodiment of the invention can also be applied to the staining operation of body structure tissues except for intervertebral discs.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.