CN210095863U

CN210095863U - Retention type spinal nerve root blocking needle

Info

Publication number: CN210095863U
Application number: CN201920438442.2U
Authority: CN
Inventors: 孔清泉; 窦青瑜; 张斌
Original assignee: West China Hospital of Sichuan University
Current assignee: West China Hospital of Sichuan University
Priority date: 2019-04-02
Filing date: 2019-04-02
Publication date: 2020-02-21
Anticipated expiration: 2029-04-02

Abstract

The utility model relates to a retainable spinal nerve root blocking needle, which comprises a soft external catheter, a hollow needle which can be arranged in the external catheter and a closed needle which can be arranged in the hollow needle, wherein the tail part of the external catheter is connected with an extension tube and/or the tail end of the external catheter is provided with an extension tube connector, an isolation plug is arranged in the extension tube connector, the hollow needle and the closed needle are made of metal, and the external catheter is made of plastic; a plurality of developing marks are arranged on the external catheter at intervals along the axial direction, the front end of the external catheter becomes thin to form a necking, and the rear end of the closed needle is connected with a stimulation instrument connector. The external catheter in the utility model can be kept in the body, is suitable for blocking spinal nerves by injecting local anesthetic for a plurality of times, and avoids repeated puncture; the hollow needle can be used for injecting contrast medium, so that the relation between the catheter and the spinal nerve root is convenient to be determined; the closed needle is connected with a stimulator connector, so that the closed needle can be conveniently connected with a nerve stimulator; the external catheter is visible under radioactive rays, so that the depth and the position can be conveniently judged and adjusted.

Description

Retention type spinal nerve root blocking needle

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to spinal nerve root that can keep somewhere blocks needle.

Background

At present, spinal diseases are usually diagnosed and treated clinically by spinal nerve block, and spinal nerves are blocked by puncturing and injecting local anesthetic for many times, so that time is consumed, and more pain is brought to patients.

In addition, in order to clarify the relationship between the catheter and the spinal nerve root, a contrast medium is often injected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a spinal nerve root blocking needle which can be kept, can be kept and is convenient for injecting anesthetic and contrast medium.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the indwelling spinal nerve root blocking needle comprises a soft external catheter, a hollow needle and a closed needle, wherein the hollow needle can be arranged in the external catheter, the closed needle can be arranged in the hollow needle, the tail end of the external catheter is connected with an extension tube and/or the tail end of the external catheter is provided with an extension tube connector, an isolation plug is arranged in the extension tube connector, and the hollow needle and the closed needle are made of metal materials.

Furthermore, a plurality of developing marks are arranged on the outer conduit at intervals along the axial direction.

Further, the front end of the outer conduit is tapered to form a necking.

Furthermore, the rear end of the closed needle is connected with a stimulation instrument connector.

Wherein, the rear end of the external conduit is provided with a butterfly-shaped fixed wing.

Preferably, the outer catheter outer diameter is 0.8mm to 2 mm.

Preferably, the outer conduit is made of plastic.

Compared with the prior art, the utility model discloses following beneficial effect has:

1, the external catheter in the utility model can be kept in the body, is suitable for blocking spinal nerves by injecting local anesthetic for a plurality of times, and avoids repeated puncture;

2, the hollow needle in the utility model can be used for injecting contrast medium, which is convenient for determining the relation between the catheter and the spinal nerve root;

3, the closed needle of the utility model is connected with an stimulator connector, which is convenient to be connected with a nerve stimulator;

4, the external catheter of the utility model is visible under radioactive rays, so that the depth and the position can be conveniently judged and adjusted.

Drawings

FIG. 1 is an external view of an external catheter according to one embodiment;

FIG. 2 is a cross-sectional view of an outer catheter according to one embodiment;

FIG. 3 is an external view of the hollow needle;

FIG. 4 is a cross-sectional view of a hollow needle;

FIG. 5 is a schematic view of a closure needle according to one embodiment;

FIG. 6 is a schematic structural diagram of the first embodiment in an assembled state;

FIG. 7 is an external view of an external catheter in the second embodiment;

FIG. 8 is a schematic structural view of a sealing needle in the third embodiment;

in the figure: 1-external catheter, 2-hollow needle, 3-closed needle, 4-developing mark, 5-extension tube, 7-extension tube connector, 8-butterfly fixing wing, 9-necking and 10-stimulator connector.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings.

Example one

As shown in fig. 1 to 6, the indwelling spinal nerve root blocking needle disclosed in this embodiment includes a flexible external catheter 1, a hollow needle 2 which can be installed in the external catheter 1, and a blocking needle 3 which can be installed in the hollow needle 2, wherein the blocking needle 3 is used for blocking the hollow needle 2. As shown in fig. 6, when the hollow needle 2 is fitted into the external catheter 1, the bevel of the hollow needle 2 is longer than that of the external catheter 1.

The tail end of the external conduit 1 is provided with an extension pipe connector 7, and the extension pipe connector 7 is matched with a medical extension pipe and can be connected with the medical extension pipe. The extension tube connector 7 is internally provided with an isolating plug which is equivalent to a heparin cap and can be punctured for transfusion and medicine injection for a plurality of times. The hollow needle 2 and the closed needle 3 are made of metal, and the external catheter 1 is made of plastic.

The external catheter 1 is provided with a plurality of visualization markers 4 at intervals along the axial direction, so that the spinal nerve root block needle can be used under the guidance of ultrasound or rays. The front end of the external catheter 1 becomes thin to form a necking 9, so that the external catheter is more attached to the hollow needle 2 and is convenient to puncture.

As shown in fig. 1 and 2, the rear end of the outer catheter 1 is externally provided with a butterfly-shaped fixing wing 8, and the butterfly-shaped fixing wing 8 can be sutured on the skin by a thread for fixing the outer catheter 1 on the skin and preventing the outer catheter 1 from being displaced. The butterfly fixing wing 8 is detachably connected with the outer conduit 1.

As shown in fig. 6, during puncturing, the hollow needle 2 is arranged in the external catheter 1, the closed needle 3 is arranged in the hollow needle 2, the hollow needle and the closed needle are punctured into the human body together, after the catheter is completely inserted, the hollow needle 2 and the closed needle 3 are withdrawn, only the soft external catheter 1 is arranged in the human body, and the anesthetic can be injected through the external catheter 1; when the contrast agent needs to be injected, the hollow needle 2 is inserted into the external catheter 1, and then the contrast agent is injected through the hollow needle 2 by using a syringe.

Example two

The difference between this embodiment and the first embodiment is: as shown in fig. 7, an extension tube 5 is connected to the tail of the external catheter 1, the extension tube 5 is connected to the side wall of the external catheter 1, and anesthetic can be injected through the extension tube 5.

EXAMPLE III

The difference between this embodiment and the first or second embodiment is: as shown in fig. 8, the rear end of the closed needle 3 is connected with a stimulator connector 10, and a nerve stimulator can be externally connected through the stimulator connector 10.

Example four

The existing nerve block needle is mainly used for blocking limbs and superficial nerves, and the nerve block needle which is longer, thicker and can be reserved is needed because the spinal nerve root is deeper and more peripheral muscles and soft tissues exist. The outer diameter of the outer catheter 1 in this embodiment is designed to be 0.8mm to 2mm in increments of 0.2 mm.

The external catheter in the utility model can be kept in the body, is suitable for blocking spinal nerves by injecting local anesthetic for a plurality of times, and avoids repeated puncture; the hollow needle can be used for injecting contrast medium, so that the relation between the catheter and the spinal nerve root is convenient to be determined; the sealing needle is convenient to be connected with a nerve stimulator and is very convenient to use.

Of course, the present invention can be embodied in many other forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be made by one skilled in the art without departing from the spirit or essential attributes thereof, and that such changes and modifications are intended to be included within the scope of the appended claims.

Claims

1. The indwelling spinal nerve root blocking needle is characterized by comprising a soft external catheter, a hollow needle and a closed needle, wherein the hollow needle can be arranged in the external catheter, the closed needle can be arranged in the hollow needle, the tail part of the external catheter is connected with an extension tube and/or the tail end of the external catheter is provided with an extension tube connector, an isolation plug is arranged in the extension tube connector, and the hollow needle and the closed needle are made of metal materials.

2. The indwelling spinal nerve root blocking needle of claim 1, wherein: a plurality of developing marks are arranged on the outer conduit at intervals along the axial direction.

3. The indwelling spinal nerve root blocking needle of claim 1, wherein: the front end of the outer conduit is thinned to form a necking.

4. The indwelling spinal nerve root blocking needle of claim 1, wherein: the rear end of the closed needle is connected with a stimulation instrument connector.

5. The indwelling spinal nerve root blocking needle of claim 1, wherein: and a butterfly-shaped fixed wing is arranged at the rear end of the external conduit.

6. The indwelling spinal nerve root blocking needle of claim 1, wherein: the outer diameter of the external conduit is 0.8mm-2 mm.

7. The indwelling spinal nerve root blocking needle of claim 1, wherein: the outer conduit is made of plastic.