CN215024117U

CN215024117U - Retractable syringe needle

Info

Publication number: CN215024117U
Application number: CN202120413556.9U
Authority: CN
Inventors: 林仲; 林威; 任明雪; 王杰
Original assignee: Eye Hospital of Wenzhou Medical University
Current assignee: Eye Hospital of Wenzhou Medical University
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-12-07
Anticipated expiration: 2031-02-25

Abstract

The utility model provides a but syringe needle of retraction, includes the syringe needle body, the syringe needle body includes the inner tube syringe needle of being connected with the needle tubing, and the tip of inner tube syringe needle is convex, and the outside of inner tube syringe needle still is equipped with the outer tube syringe needle, swing joint between outer tube syringe needle and the inner tube syringe needle, and the outer tube syringe needle makes its tip be longer than the injection position of the convex tip of inner tube syringe needle and upward movement make its tip short in the tissue of the convex tip of inner tube syringe needle walk the position including the downstream, the utility model discloses an adjustment of position between inner tube syringe needle and outside outer tube syringe needle avoids most advanced damage blood vessel and eyeball tissue when realizing walking between injection and needle tubing tissue, avoids because the relevant complication that damage blood vessel and eyeball tissue lead to has certain clinical value.

Description

Retractable syringe needle

Technical Field

The utility model relates to the technical field of medical equipment, concretely relates to but syringe needle that contracts.

Background

Syringes are one of the most commonly used medical devices. Retrobulbar block anesthesia is a common mode of ophthalmic surgical anesthesia. During anesthesia, a syringe needle is used to puncture the skin through the upper edge of the lower wall of the orbit, the retrobulbar tissue is gradually punctured along the space between the lower wall of the orbit and the eyeball, and then the anesthetic is injected into the part. The anesthesia method has more risks of complications, such as damage to the eyeball surface tissue of the scleral tissue, damage to the blood vessel of the eyeball, further retrobulbar hemorrhage, and even serious complications caused by penetrating the eyeball tissue.

Currently, there is no effective improvement method for the limitations of the ophthalmic anesthesia approach except for repeated practice by the operator. But the exercise procedure is at a higher risk of developing complications of anesthesia. In addition, even experienced ophthalmologists cannot completely avoid all complications. The complications are caused by the inability to view the tissues of the eye and the syringe needle through skin occlusion, as well as the sharp syringe needle. Accordingly, there is an urgent need to design syringe needles to avoid the associated complications.

Disclosure of Invention

In order to solve the technical defects existing in the prior art, the utility model provides a retractable syringe needle.

The utility model discloses a technical solution be: the utility model provides a retractable syringe needle, includes the syringe needle body, the syringe needle body include the inner tube syringe needle of being connected with the needle tubing, the tip of inner tube syringe needle be convex, the outside of inner tube syringe needle still be equipped with the outer tube syringe needle, the tip of outer tube syringe needle be the cutting part, outer tube syringe needle and inner tube syringe needle between swing joint, the outer tube syringe needle make its tip be longer than the injection position of the circular arc tip of inner tube syringe needle and upward movement make its tip be shorter than the position of walking between the tissue of the circular arc tip of inner tube syringe needle including the downward movement.

The end part of the inner tube needle head is also provided with a rubber head end with a protective effect, and the end surface of the rubber head end is arc-shaped.

The outer wall of the inner tube needle is provided with a protrusion, the inner wall of the outer tube needle is provided with a groove, and the protrusion slides along the groove to be matched with the groove to realize movable connection between the inner tube needle and the outer tube needle.

The groove is of a concave structure which rotates 90 degrees.

The bulge is a cylindrical bulge.

The utility model has the advantages that: the utility model provides a but syringe needle of retraction, including the syringe needle body, the syringe needle body includes the inner tube syringe needle of being connected with the needle tubing, and the tip of inner tube syringe needle is convex, and the outside of inner tube syringe needle still is equipped with the outer tube syringe needle, swing joint between outer tube syringe needle and the inner tube syringe needle, and the outer tube syringe needle makes its tip be longer than the injection position of the convex tip of inner tube syringe needle and the position of walking between the tissue of the convex tip of inner tube syringe needle including the downstream messenger's tip and upward movement messenger's tip shortfall, the utility model discloses an adjustment of position between inner tube syringe needle and outside outer tube syringe needle avoids most advanced damage blood vessel and eyeball tissue when walking between realization injection and needle tubing tissue, avoids because the relevant complication that damage vessel and eyeball tissue lead to has certain clinical value.

Drawings

Fig. 1 is a schematic view of the inner tube needle structure of the present invention.

Fig. 2 is a schematic view of the outer tube needle structure of the present invention.

Fig. 3 is a schematic view of the structure of the needle during injection.

Fig. 4 is a schematic view of the structure of the needle structure during intertissue walking according to the present invention.

Wherein, 1-inner tube needle, 2-outer tube needle, 11-rubber head, 12-bulge, 21-groove.

Detailed Description

Now, the utility model discloses it is right with reference to fig. 1, fig. 2 to further explain, a retractable syringe needle, including the syringe needle body, the syringe needle body include the inner tube syringe needle 1 with the needle tubing connection, the tip of inner tube syringe needle 1 be convex, the tip of inner tube syringe needle 1 on still be equipped with the rubber head end 11 that plays the guard action, the terminal surface of rubber head end 11 be convex. The outside of inner tube syringe needle 1 still be equipped with outer tube syringe needle 2, the tip of outer tube syringe needle 2 be the cutting part, outer tube syringe needle 2 and inner tube syringe needle 1 between swing joint, outer tube syringe needle 2 make its tip be longer than the injection position of the 1 circular arc tip of inner tube syringe needle and the position of walking between the tissue of its tip shortfall in 1 circular arc tip of inner tube syringe needle including the rebound make its tip. The utility model discloses an adjustment of position between inner tube syringe needle and the outside outer tube syringe needle avoids most advanced damage blood vessel and eyeball tissue when realizing walking between injection and needle tubing tissue, avoids because the relevant complication that leads to is organized to damage blood vessel and eyeball, has certain clinical value.

The outer wall of the inner tube needle head 1 is provided with a bulge 12, and the bulge 12 is a cylindrical bulge. The inner wall of the outer tube needle head 2 is provided with a groove 21, and the groove 21 is of a concave structure which rotates 90 degrees. The bulge 12 is matched with the groove 21 in a sliding way to realize the movable connection between the inner tube needle 1 and the outer tube needle 2. When the bulge 12 is clamped at the upper part of the concave structure which rotates 90 degrees, the outer tube needle head 2 is exposed for skin puncture. When the bulge 12 is clamped at the lower part of the concave structure which rotates 90 degrees, the inner tube needle head 1 is exposed and used for walking between tissues.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; 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 invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the present invention has been described in accordance with the above embodiments, the inventive concept is not limited to this embodiment, and any modification of the inventive concept will be included in the scope of the patent claims.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a retractable syringe needle, includes the syringe needle body, its characterized in that, the syringe needle body include inner tube syringe needle (1) be connected with the needle tubing, the tip of inner tube syringe needle (1) be convex, the outside of inner tube syringe needle (1) still be equipped with outer tube syringe needle (2), the tip of outer tube syringe needle (2) be the cutting part, outer tube syringe needle (2) and inner tube syringe needle (1) between swing joint, outer tube syringe needle (2) make its tip be longer than the injection position of inner tube syringe needle (1) arc tip and upward movement make its tip be shorter than the position of walking between the tissue of inner tube syringe needle (1) arc tip including the downward movement.

2. A retractable syringe needle as claimed in claim 1, wherein the end of the inner tube needle (1) is further provided with a protective rubber tip (11), and the end surface of the rubber tip (11) is in the shape of a circular arc.

3. The retractable syringe needle as claimed in claim 1, wherein the outer wall of the inner tube needle (1) is provided with a protrusion (12), the inner wall of the outer tube needle (2) is provided with a groove (21), and the protrusion (12) is slidably fitted along the groove (21) to realize the movable connection between the inner tube needle (1) and the outer tube needle (2).

4. A retractable syringe needle as claimed in claim 1, characterised in that the recess (21) is of a 90 ° rotated "dog" configuration.

5. A retractable syringe needle as claimed in claim 3, characterised in that the projection (12) is a cylindrical projection.