CN211834864U

CN211834864U - Mouse optic nerve intrathecal injection needle

Info

Publication number: CN211834864U
Application number: CN201922030726.0U
Authority: CN
Inventors: 费霏; 刘文博; 费舟
Original assignee: Fourth Military Medical University FMMU
Current assignee: Fourth Military Medical University FMMU
Priority date: 2019-11-22
Filing date: 2019-11-22
Publication date: 2020-11-03
Anticipated expiration: 2029-11-22

Abstract

The utility model discloses a mouse optic nerve intrathecal injection needle, which comprises a hook body, wherein the inner bottom of the hook body is provided with a positioning groove recessed into the inner bottom of the hook, and the bottom of the positioning groove is provided with a needle point; a liquid channel is arranged in the hook body, a liquid outlet hole is arranged on the needle point, and the liquid outlet hole is communicated with the liquid channel. The utility model discloses a mouse optic nerve's specific position can be confirmed well to the form that the syringe needle adopted the big coupler body, at first with mouse optic nerve restraint in the coupler body, then adopts the constant head tank to carry out accurate positioning needle prick, has improved the success rate of mouse optic nerve intrathecal internal injection needle prick greatly. The utility model discloses a smooth surface in the structure makes mouse optic nerve can smooth landing to the constant head tank of bottom in. The radian of constant head tank and mouse optic nerve outer wall can laminate, ensure that mouse optic nerve is difficult to the roll-off after getting into.

Description

Mouse optic nerve intrathecal injection needle

Technical Field

The utility model belongs to the field of medical equipment, a syringe needle is related to, concretely relates to mouse optic nerve intrathecal injection syringe needle.

Background

Mouse optic nerve's diameter is less, carries out the mouse optic nerve intrathecal injection in-process among the prior art, and the experimenter is difficult to accurate definite mouse optic nerve's accurate position, and the problem that mouse optic nerve intrathecal is not pricked to the syringe needle often can appear, leads to the injection process failure, and the success rate is not high, and it is big to lead to the experiment degree of difficulty, and the experimental time is long.

Disclosure of Invention

Not enough to prior art exists, the utility model aims to provide an injection syringe needle in mouse optic nerve sheath solves the technical problem that the syringe needle among the prior art is difficult to the accuracy and pricks mouse optic nerve and carries out the injection in the sheath.

In order to solve the technical problem, the utility model discloses a following technical scheme realizes:

an injection needle head in a mouse optic nerve sheath comprises a hook body, wherein a positioning groove recessed into the inner bottom of the hook body is arranged at the inner bottom of the hook body, and a needle point is arranged at the bottom of the positioning groove;

the hook body is internally provided with a liquid flowing channel, the needle point is provided with a liquid outlet hole, and the liquid outlet hole is communicated with the liquid flowing channel.

The utility model discloses still have following technical characteristic:

the height of the needle point is less than or equal to the depth of the positioning groove.

The height of the needle point is 0.4-0.8 times of the depth of the positioning groove.

The hook body comprises a vertical part and a bending part which are integrally arranged, and the bending part is smoothly tapered from a connecting end of the bending part and the vertical part to a tip end.

The positioning groove is positioned in the middle of the bottom in the hook body; the locating slot is a semi-arc slot.

The connecting part of the two ends of the opening of the positioning groove and the hook body is provided with a smooth transition chamfer.

The liquid outlet holes are two-way liquid outlet holes which penetrate through two sides of the needle point.

The inner diameter of the hook body is 3-5 times of the outer diameter of the optic nerve of the mouse.

The arc inner diameter of the positioning groove is equal to the outer diameter of the optic nerve of the mouse.

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

(I) the utility model discloses a mouse optic nerve's specific position can be confirmed well to the form that the syringe needle adopted the big coupler body, at first with mouse optic nerve restraint in the coupler body, then adopts the constant head tank to carry out accurate location needle prick, has improved the success rate of mouse optic nerve intrathecal internal injection needle prick greatly.

(II) the smooth surface in the structure of the utility model makes the optic nerve of the mouse smoothly slide to the positioning groove at the bottom. The radian of constant head tank and mouse optic nerve outer wall can laminate, ensure that mouse optic nerve is difficult to the roll-off after getting into.

Drawings

Fig. 1 is a schematic view of the internal cross-sectional structure of the present invention.

Fig. 2 is a schematic view of the external structure of the present invention.

Fig. 3 is a schematic view of the usage state of the present invention.

Fig. 4 is a schematic view of the positioning status of the present invention.

The meaning of the individual reference symbols in the figures is: 1-hook body, 2-positioning groove, 3-needle tip, 4-liquid channel, 5-liquid outlet hole, 101-vertical part, 102-bending part, 6-smooth transition chamfer and 7-mouse optic nerve.

The following examples are provided to explain the present invention in further detail.

Detailed Description

The following embodiments of the present invention are given, and it should be noted that the present invention is not limited to the following embodiments, and all the equivalent transformations made on the basis of the technical solution of the present application all fall into the protection scope of the present invention.

Example 1:

according to the technical scheme, as shown in fig. 1 to 4, the present embodiment provides a mouse optic nerve intrathecal injection needle, which comprises a hook body 1, wherein a positioning groove 2 recessed into the inner bottom of the hook is arranged at the inner bottom of the hook body 1, and a needle tip 3 is arranged at the bottom of the positioning groove 2;

a liquid channel 4 is arranged in the hook body 1, a liquid outlet hole 5 is arranged on the needle tip 3, and the liquid outlet hole 5 is communicated with the liquid channel 4.

As a preferable scheme of the embodiment, the height of the needle tip 3 is less than or equal to the depth of the positioning groove 2; preferably, the height of the needle tip 3 is 0.4 to 0.8 times of the depth of the positioning groove 2. The device is used for ensuring that the mouse optic nerve 7 can be injected in a sheath manner after falling into the positioning groove 2, and ensuring that the needle tip 3 cannot cause redundant additional trauma to the mouse optic nerve 7 in the positioning process.

As a preferable aspect of the present embodiment, the hook body 1 includes a vertical portion 101 and a curved portion 102 integrally provided, and the curved portion 102 is smoothly tapered from a connecting end with the vertical portion 101 to a tip end. So that the hook body 1 can hook the optic nerve 7 of the mouse probably by blind hooking in the area of the optic nerve 7 of the mouse.

As a preferable scheme of the embodiment, the positioning groove 2 is positioned at the middle position of the inner bottom of the hook body 1; the positioning groove 2 is a semi-arc groove. The connecting part of the two ends of the opening of the positioning groove 2 and the hook body 1 is provided with a smooth transition chamfer 6. So that the optic nerve 7 of the mouse can rapidly slide into the positioning groove 2 in the process of the in-hook movement of the hook body 1.

As a preferable scheme of the embodiment, the liquid outlet 5 is a liquid outlet which penetrates through two sides of the needle tip 3 in two directions. The convenient injection can enter the optic nerve 7 of the mouse and is injected in the sheath without easy blockage.

In a preferred embodiment of the present invention, the inner diameter of the hook body 1 is 3 to 5 times the outer diameter of the mouse optic nerve 7. Facilitating better hooking of the mouse optic nerve 7.

As a preferable scheme of the embodiment, the inner diameter of the circular arc of the positioning groove 2 is equal to the outer diameter of the mouse optic nerve 7. So that the needle tip 3 can be inserted from the bottom center position of the optic nerve 7 of the mouse.

The materials for manufacturing the injection needle in the mouse optic nerve sheath in the embodiment all adopt common medical needle manufacturing materials.

The utility model discloses when using, will the utility model discloses a syringe needle is connected on the syringe as the syringe needle of syringe to the injection has been prepared in the syringe, in mouse optic nerve place region, adopt the mode that the coupler body 1 hook was dragged for to go to acquire mouse optic nerve, as long as mouse optic nerve gets into and can catch in the hook of coupler body 1, mouse optic nerve slides down to the bottom in the hook, gets into in constant head tank 2, and the needle point 3 of constant head tank 2 bottom pierces the mouse optic nerve simultaneously, accomplishes the operation of pricking. Then injecting the injection in the injector into the mouse optic nerve sheath through the liquid flowing channel 4 and the liquid outlet hole 5 according to the test requirement to complete intrathecal injection.

Claims

1. The intrathecal injection needle for optic nerves of mice is characterized by comprising a hook body (1), wherein the inner bottom of the hook body (1) is provided with a positioning groove (2) recessed into the inner bottom of the hook, and the bottom of the positioning groove (2) is provided with a needle point (3);

the hook body (1) is internally provided with a liquid flowing channel (4), the needle point (3) is provided with a liquid outlet hole (5), and the liquid outlet hole (5) is communicated with the liquid flowing channel (4).

2. The intrathecal injection needle for the optic nerve of mice as in claim 1, characterized in that the height of the needle tip (3) is less than or equal to the depth of the positioning groove (2).

3. The intrathecal injection needle for the optic nerve of mice as in claim 2, wherein the height of the needle tip (3) is 0.4 to 0.8 times the depth of the positioning groove (2).

4. The intrathecal injection needle for mouse optic nerves as claimed in claim 1, wherein said hook body (1) comprises a vertical part (101) and a curved part (102) which are integrally formed, and said curved part (102) is smoothly tapered from the end connected with the vertical part (101) to the tip.

5. The intrathecal injection needle for optic nerves of mice as in claim 1, characterized in that the positioning groove (2) is located at the middle position of the bottom inside the hook body (1); the positioning groove (2) is a semi-arc groove.

6. The intrathecal injection needle for optic nerves of mice as in claim 1, characterized in that the junction of the two ends of the opening of the positioning slot (2) and the hook body (1) is designed as a rounded chamfer (6).

7. The intrathecal injection needle for the optic nerve of mice as in claim 1, wherein the exit holes (5) are two-way exit holes that pass through both sides of the needle tip (3).

8. The intrathecal injection needle for mouse optic nerve according to claim 1, wherein the inner diameter of the hook body (1) is 3 to 5 times of the outer diameter of the mouse optic nerve (7).

9. The intrathecal injection needle for mouse optic nerve as in claim 1, characterized in that the circular arc inside diameter of the positioning groove (2) is equal to the outside diameter of mouse optic nerve (7).