Medical endoscope injection needle with improved structure

Abstract

The utility model discloses a medical endoscope injection needle with an improved structure, which comprises an injection handle, an infusion tube body and an injection needle head, an outer tube and an inner tube are arranged on the infusion tube body, the near end of the inner tube is connected with the injection handle, the injection handle drives the inner tube to extend outwards and retract inwards, and the far end of the inner tube is fixedly connected with the injection needle head; the near end of the outer tube is fixedly connected with the injection handle, the far end of the outer tube is provided with an opening end, a metal sheath body is arranged at the opening end in a matched mode, and the injection needle can movably penetrate through the metal sheath body. A reinforced elastic inner tube body is further arranged on the inner wall of the far-end section of the outer tube, and the reinforced elastic inner tube body is fixedly arranged between the outer tube and the inner tube. According to the utility model, the elasticity and the strength of the inner tube and the outer tube of the endoscope injection needle can be effectively enhanced, so that when the endoscope injection needle is bent and rotated for injection, stable needle withdrawing during bent injection can be ensured, and the needle withdrawing use effect is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the design and application field of endoscope injection needle, more particularly to a medical endoscope injection needle with improved structure. BACKGROUND

[0002] The endoscope injection needle is used in cooperation with an endoscope to provide a channel for injecting a drug under the endoscope and to realize the injection operation under the endoscope. The structure of a general endoscope injection needle comprises a liquid injection push rod, a shell, an outer tube, an inner tube, and a needle head fixed to the outer end of the inner tube. The outer tube is connected to the shell, and the inner tube is arranged in the shell and moves in cooperation with the liquid injection push rod. The needle is pushed and retracted by operating the liquid injection push rod to achieve the purpose of injection.

[0003] The existing endoscope injection needle, such as the endoscope injection needle disclosed in Chinese patent CN219878233U, has a specific structure and a use mode. As known from the above disclosure, the existing endoscope injection needle can lock and unlock the infusion tube and adjust the length of the needle by setting a polar groove and an operation part capable of elastic deformation, and is safer and more reliable to use.

[0004] The technical solution is a further improvement and perfection of the structure of the existing endoscope injection needle based on the structure of the existing endoscope injection needle. The main technical problem to be solved is:

[0005] Technical problem one: the existing endoscope injection needle is used for angle rotation and bending injection, especially for 180-degree rotation injection of the inner and outer tubes in the working channel. However, the strength and elasticity of the inner and outer tubes are not enough to ensure the stability of the needle during bending injection, which affects the use effect of the needle.

[0006] Technical problem two: the needle head cannot be effectively and stably supported in the target area, which also affects the accuracy of the needle injection. UTILITY MODEL CONTENT

[0007] The utility model discloses a medical endoscope injection needle with improved structure, which mainly aims to overcome the above-mentioned deficiencies and shortcomings of the prior art.

[0008] The technical solution adopted by the utility model is as follows:

[0009] The utility model provides a medical endoscope injection needle of structural improvement, including injection handle, infusion pipe body and injection needle head, the infusion pipe body is provided with outer tube and inner tube, the proximal end of inner tube is connected with injection handle, and injection handle drives the outer stretching of inner tube and the inboard retraction, and the distal end of inner tube is fixedly connected with injection needle head, the proximal end of outer tube is fixedly connected with injection handle, and the distal end of outer tube is provided with open end, and the open end is matched with a metal sheath, and injection needle head can move through metal sheath, and the inner wall of outer tube distal end section is also provided with reinforced elastic inner pipe body, and the reinforced elastic inner pipe body is fixedly arranged between outer tube and inner tube.

[0010] Further, the proximal end of the inner tube is provided with a luer connector, and the inner tube is connected with an external injector through the luer connector.

[0011] Further, the length of the reinforced elastic inner pipe body is 5-10 cm.

[0012] Further, the injection handle is provided with a plurality of position fixing knobs, and the position fixing knobs are used for controlling the depth of needle insertion of the injection handle.

[0013] Further, the outer tube, the inner tube and the reinforced elastic inner pipe body are transparent tube structures.

[0014] Compared with the prior art, the utility model has the advantages that:

[0015] Advantage one: the utility model can effectively enhance the elasticity and strength of the inner and outer tubes of the endoscope injection needle by arranging the reinforced elastic inner pipe body, so that the stability of the needle in the bending injection can be ensured, and the use effect of the needle is not affected.

[0016] Advantage two: the utility model can effectively and stably support the needle head in the target area by arranging the metal sheath at the distal end of the outer tube, so that the precision of the needle injection can be ensured, and the operation and use of the doctor are facilitated. DRAWINGS

[0017] Fig. 1 is a structural schematic diagram of the utility model.

[0018] Fig. 2 is a structural schematic diagram of the utility model in use.

[0019] Fig. 3 is a local enlarged structural schematic diagram of the utility model.

[0020] Wherein, injection handle 1, position fixing knob 11, infusion tube body 2, outer tube 21, inner tube 22, luer 221, reinforced elastic inner tube body 23, injection needle 3, metal sheath 4. DETAILED DESCRIPTION

[0021] The specific embodiments of the utility model will be further described and illustrated with reference to the accompanying drawings.

[0022] As Figs. 1-3 shown, a structure improved medical endoscope injection needle, including injection handle 1, infusion tube body 2 and injection needle 3, the infusion tube body 2 is provided with outer tube 21 and inner tube 22, the proximal end of the inner tube 22 is connected with the injection handle 1, the injection handle 1 drives the inner tube 22 to stretch out and retract, the injection handle 1 is provided with a plurality of position fixing knobs 11, the position fixing knob 11 is used for controlling the depth of needle insertion of the injection handle 1.The distal end of the inner tube 22 is fixedly connected with the injection needle 3, the port of the proximal end of the inner tube 22 is matched with luer 221, the inner tube 22 is connected with external injector through the luer 221.The proximal end of the outer tube 21 is fixedly connected with the injection handle 1, the distal end of the outer tube 21 is provided with an open end, the open end is matched with a metal sheath 4, and the injection needle 3 can be movably arranged through the metal sheath 4.By setting the metal sheath 4 at the distal end of the outer tube 21, the needle can be effectively and stably supported in the target area, the accuracy of needle injection is ensured, and the operation and use of the doctor are facilitated.

[0023] As Figs. 1-3 shown, the inner wall of the distal end section of the outer tube 21 is further provided with reinforced elastic inner tube body 23, and the reinforced elastic inner tube body 23 is fixedly arranged between the outer tube 21 and the inner tube 22.The length of the reinforced elastic inner tube body 23 is 5-10cm, and the outer tube 21, the inner tube 22 and the reinforced elastic inner tube body 23 are respectively transparent tube structures.By setting the reinforced elastic inner tube body 23, the elasticity and strength of the inner and outer tubes of the endoscope injection needle can be effectively enhanced, so that the stability of the needle during bending injection can be ensured when the injection is carried out after bending and rotating, and the use effect of the needle is not affected.

[0024] The utility model in use:

[0025] First, the luer 221 of the inner tube 22 is connected with the external injector, then the infusion tube is inserted into the working channel, enters the injection target area through the working channel, then the position fixing knob 11 on the fixed injection handle 1 is selected to adjust the insertion depth of the needle, at this time, according to the operation requirement, the working channel is rotated and bent, the angle of the needle is adjusted, the injection handle 1 is operated to push and retract the needle, and the injection of the liquid medicine is realized.

[0026] The above merely illustrates the specific embodiments of the present application, but the design concept of the present application is not limited to this, and any non-substantial improvement of the present application by using the concept should belong to the act of infringing the protection scope of the present application.

Claims

1. A structurally improved medical endoscope injection needle, characterized by: The injection handle, the infusion tube body and the injection needle are included, the infusion tube body is provided with an outer tube and an inner tube, the proximal end of the inner tube is connected with the injection handle, the injection handle drives the outer extension and the inner retraction of the inner tube, the distal end of the inner tube is fixedly connected with the injection needle; the proximal end of the outer tube is fixedly connected with the injection handle, the distal end of the outer tube is provided with an open end, a metal sheath body is matched and arranged at the open end, and the injection needle can movably pass through the metal sheath body; a reinforced elastic inner tube body is further arranged on the inner wall of the outer tube distal end section, and the reinforced elastic inner tube body is fixedly arranged between the outer tube and the inner tube.

2. The improved medical endoscope injection needle according to claim 1, wherein: A luer connector is matched and arranged at the port of the proximal end of the inner tube, and the inner tube is connected with an external injector through the luer connector.

3. The improved medical endoscope injection needle according to claim 1, wherein: The length of the reinforced elastic inner tube body is 5-10 cm.

4. The improved medical endoscope injection needle according to claim 1, wherein: A plurality of position fixing knobs are arranged on the injection handle, and the position fixing knobs are used for controlling the needle insertion depth of the injection handle.

5. The improved medical endoscope injection needle according to claim 1, wherein: The outer tube, the inner tube and the reinforced elastic inner tube body are respectively transparent tube body structures.

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