CN215024122U

CN215024122U - Retractable syringe needle head protective sleeve

Info

Publication number: CN215024122U
Application number: CN202120593092.4U
Authority: CN
Inventors: 任明雪; 林威; 林仲
Original assignee: Eye Hospital of Wenzhou Medical University
Current assignee: Eye Hospital of Wenzhou Medical University
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-12-07
Anticipated expiration: 2031-03-24

Abstract

A retractable syringe needle head protective sleeve comprises a protective sleeve body, the protective sleeve body comprises an outer sleeve, an inner sleeve for containing a syringe needle tube is arranged in the outer sleeve, a blunt sleeve is arranged at the bottom of the inner sleeve, an elastic reset structure is further arranged between the bottom surfaces of the inner sleeve and the outer sleeve, a limit structure is arranged between the side walls of the inner sleeve and the outer sleeve, the outer sleeve and the inner sleeve comprise a limit structure for limiting the inter-tissue walking position of downward movement of the blunt sleeve at the bottom of the inner sleeve and the inter-tissue walking position of upward reset of the blunt sleeve at the bottom of the inner sleeve when the limit structure is separated from the inner sleeve, through the adjustment of the positions of the inner sleeve, the inner injector and the outer sleeve, the blood vessel and eyeball tissues are prevented from being damaged by the tip when the injector and the needle tube tissues walk, related complications caused by the damage to the blood vessel and the eyeball tissues are avoided, and the injector has certain clinical value.

Description

Retractable syringe needle head protective sleeve

Technical Field

The utility model particularly relates to the technical field of medical equipment, and particularly relates to a retractable syringe needle protective sleeve.

Background

The injector is one of the most commonly used medical devices, such as retrobulbar anesthesia, thoracoabdominal cavity puncture, and the like. 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. This anesthesia is associated with a high risk of complications, such as damage to the scleral tissue (epibulbar tissue), damage to the blood vessels of the eyeball (which in turn causes retrobulbar hemorrhage), and even penetration of the tissue of the eyeball. The thoracocentesis is a commonly used diagnosis, treatment and material taking method in the respiratory medicine, and a syringe needle is used for puncturing the skin during puncture, then the needle is vertically inserted along the lower edge of a rib, and medicine injection or material taking is carried out after the needle reaches a designated position. There are also more complications in this approach, such as damage to intercostal arteries or nerves.

Currently there is no effective way to improve the above limitations of the operation except for repeated practice by the operator. But the exercise process is at a higher risk of developing complications. In addition, even experienced physicians cannot completely avoid all complications. The complications are caused by the inability to view the tissues and syringe needles in the eye or thorax through skin occlusion, as well as sharp syringe needles.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical defects existing in the prior art, the utility model provides a retractable syringe needle protective sleeve, which can avoid the related complications and has certain clinical value.

The utility model discloses a technical solution be: the utility model provides a retractable syringe needle head protective sleeve, includes the protective sleeve body, the protective sleeve body include the outer tube, the outer tube in be equipped with the interior sleeve pipe that is used for holding the syringe needle tube, interior sheathed tube bottom be equipped with blunt sleeve pipe, the bottom surface of interior sleeve pipe and outer tube between still be equipped with elasticity reset structure, the lateral wall of interior sleeve pipe and outer tube between be equipped with limit structure, outer tube and interior sleeve pipe including the blunt sleeve pipe downstream's of limit structure spacing interior sleeve pipe bottom tissue between walking position and the blunt sleeve pipe that limit structure breaks away from interior sleeve pipe bottom injection position that upwards resets.

The side wall of the outer sleeve is provided with a through groove, the side wall of the inner sleeve is provided with a lug extending outwards, and the lug extends to the outer side of the through groove.

The top of the outer sleeve is provided with a limit platform which is in limit fit with the needle tube.

The side walls of the inner sleeve and the outer sleeve are provided with wedge blocks, and the inner sleeve and the outer sleeve realize the limiting matching through the limiting structures between the wedge blocks.

The through groove is an L-shaped groove, and the lug slides along the L-shaped groove to form a limiting structure so as to realize the upper and lower limiting of the inner sleeve.

The elastic reset structure is a spring, and two ends of the spring are respectively connected with the inner sleeve and the outer sleeve.

The blunt cannula is a cannula with a cylindrical end part.

The utility model has the advantages that: the utility model provides a retractable syringe needle protective sleeve, which comprises a protective sleeve body, wherein the protective sleeve body comprises an outer sleeve, an inner sleeve for accommodating a syringe needle tube is arranged in the outer sleeve, the bottom of the inner sleeve is provided with a blunt sleeve, an elastic reset structure is also arranged between the bottom surfaces of the inner sleeve and the outer sleeve, a limit structure is arranged between the side walls of the inner sleeve and the outer sleeve, the outer sleeve and the inner sleeve comprise an inter-tissue walking position of the blunt sleeve at the bottom of the limit structure limit inner sleeve moving downwards and an inter-tissue walking position of the blunt sleeve with the limit structure separated from the bottom of the inner sleeve resetting upwards, through the adjustment of the positions between the inner sleeve and the inner syringe and the outer sleeve, the blood vessel and eyeball tissue can be prevented from being damaged at the tip when the injection and the syringe tissue walk, and relevant complications caused by the damage of the blood vessel and eyeball tissue can be avoided, has certain clinical value.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.

Fig. 3 is a schematic view of the injection state of embodiment 1 of the present invention.

Fig. 4 is a schematic view of the walking state between tissues according to embodiment 1 of the present invention.

Fig. 5 is a schematic view of the spacing structure according to embodiment 1 of the present invention.

Wherein, the device comprises 1-an outer sleeve, 2-an inner sleeve, 3-an elastic reset structure, 4-a limit structure, 5-a wedge block, 11-a through groove and 21-a bump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work all belong to the protection scope of the present invention.

Example 1

The utility model provides a retractable syringe needle head protective sleeve, includes the protective sleeve body, the protective sleeve body include outer tube 1, outer tube 1 in be equipped with the interior sleeve pipe 2 that is used for holding the syringe needle tubing, the bottom of interior sleeve pipe 2 be equipped with blunt sleeve pipe 21, blunt sleeve pipe 21 be the tip for the columniform sleeve pipe. Interior sleeve pipe 2 and outer tube 1's bottom surface between still be equipped with elasticity reset structure 3, interior sleeve pipe 2 and outer tube 1's lateral wall between be equipped with limit structure 4, interior sleeve pipe 2 and outer tube 1's lateral wall on all be equipped with wedge 5, interior sleeve pipe 2 and outer tube 1 through constituting limit structure 4 between the wedge 5 and realize spacing cooperation. The outer sleeve 1 and the inner sleeve 2 comprise an intertissue walking position at which the position limiting structure 4 limits the downward movement of the blunt sleeve 21 at the bottom of the inner sleeve 2 and an injection position at which the position limiting structure 4 is separated from the upward resetting of the blunt sleeve 21 at the bottom of the inner sleeve 2. The utility model discloses an interior sleeve pipe and the regulation of position between inside syringe and the outer tube avoid most advanced damage blood vessel and eyeball tissue when walking between realization injection and needle tubing tissue, avoid because the relevant complication that leads to is organized to damage blood vessel and eyeball, have certain clinical value.

The side wall of the outer sleeve 1 is provided with a through groove 11, the side wall of the inner sleeve 2 is provided with a lug 21 extending outwards, and the lug 21 extends to the outer side of the through groove 11.

The top of the outer sleeve 1 is provided with a limit table 12 which is in limit fit with the needle tube.

The elastic reset structure 3 is a spring, and two ends of the spring are respectively connected with the inner sleeve 2 and the outer sleeve 1.

When the limiting structure is separated, the wedge blocks 5 are separated by pressing the lug inwards.

Example 2

The utility model provides a retractable syringe needle head protective sleeve, includes the protective sleeve body, the protective sleeve body include outer tube 1, outer tube 1 in be equipped with the interior sleeve pipe 2 that is used for holding the syringe needle tubing, the bottom of interior sleeve pipe 2 be equipped with blunt sleeve pipe 21, blunt sleeve pipe 21 be the tip for the columniform sleeve pipe. Still be equipped with elasticity reset structure 3 between the bottom surface of interior sleeve pipe 2 and outer tube 1, the lateral wall of interior sleeve pipe 2 and outer tube 1 between be equipped with limit structure 4, outer tube 1 and interior sleeve pipe 2 walk the position and the injection position that the blunt sleeve pipe 21 that limit structure 4 breaks away from interior sleeve pipe 2 bottom upwards resets between the tissue of the blunt sleeve pipe 21 downstream of the spacing interior sleeve pipe 2 bottom of limit structure 4. The utility model discloses an interior sleeve pipe and the regulation of position between inside syringe and the outer tube avoid most advanced damage blood vessel and eyeball tissue when walking between realization injection and needle tubing tissue, avoid because the relevant complication that leads to is organized to damage blood vessel and eyeball, have certain clinical value.

The side wall of the outer sleeve 1 is provided with a through groove 11, the side wall of the inner sleeve 2 is provided with a lug 21 extending outwards, and the lug 21 extends to the outer side of the through groove 11. The through groove 11 is an L-shaped groove, and the lug 21 slides along the L-shaped groove to form a limiting structure 4 to limit the upper part and the lower part of the inner sleeve 2.

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. A retractable syringe needle head protective sleeve comprises a protective sleeve body, and is characterized in that the protective sleeve body comprises an outer sleeve (1), an inner sleeve (2) for containing a syringe needle tube is arranged in the outer sleeve (1), a passive sleeve (21) is arranged at the bottom of the inner sleeve (2), an elastic reset structure (3) is arranged between the inner sleeve (2) and the bottom surface of the outer sleeve (1), a limit structure (4) is arranged between the inner sleeve (2) and the side wall of the outer sleeve (1), the outer sleeve (1) and the inner sleeve (2) comprise an inter-tissue walking position at which the blunt sleeve (21) at the bottom of the inner sleeve (2) moves downwards and an injection position at which the blunt sleeve (21) at the bottom of the inner sleeve (2) is separated from the limiting structure (4) and is reset upwards, wherein the limiting structure (4) is used for limiting the position of the inter-tissue walking position.

2. A retractable syringe needle protecting sleeve according to claim 1, wherein the outer sleeve (1) is provided with a through slot (11) in the side wall thereof, the inner sleeve (2) is provided with a projection (21) extending outwardly in the side wall thereof, and the projection (21) extends to the outside of the through slot (11).

3. A retractable syringe needle protecting sleeve according to claim 1, characterized in that the top of the outer sleeve (1) is provided with a limit stop (12) for limit-fitting with the needle tube.

4. A retractable syringe needle protecting sleeve according to claim 1, characterized in that the side walls of the inner sleeve (2) and the outer sleeve (1) are respectively provided with a wedge-shaped block (5), and the inner sleeve (2) and the outer sleeve (1) realize the limit fit through a limit structure (4) formed between the wedge-shaped blocks (5).

5. A retractable syringe needle protecting sleeve as claimed in claim 2, wherein the through slot (11) is an L-shaped slot, and the protrusion (21) slides along the L-shaped slot to form a limiting structure (4) for limiting the position of the inner sleeve (2) up and down.

6. A retractable syringe needle protecting sleeve according to claim 1, characterized in that the elastic restoring structure (3) is a spring, and both ends of the spring are respectively connected with the inner sleeve (2) and the outer sleeve (1).

7. A retractable syringe needle protecting sleeve according to claim 1, characterized in that the blunt cannula (21) is a cylindrical-ended cannula.