CN219764164U

CN219764164U - Needleless injector

Info

Publication number: CN219764164U
Application number: CN202320764962.9U
Authority: CN
Inventors: 张桢
Original assignee: Wenzhou Polytechnic
Current assignee: Wenzhou Polytechnic
Priority date: 2023-04-07
Filing date: 2023-04-07
Publication date: 2023-09-29
Anticipated expiration: 2033-04-07

Abstract

The utility model relates to a needleless injector, which comprises an injector body, wherein the injector body is provided with an injection nozzle, the injector body comprises a linkage shell, a rotation shell and a pushing spring, the linkage shell is arranged on the injector body and is in linkage with the injector body, the injection nozzle is positioned in the linkage shell, the rotation shell is sleeved outside the linkage shell, the pushing spring is arranged between the rotation shell and the linkage shell and drives the rotation shell to move along a direction away from the linkage shell, the linkage shell is provided with a plurality of guide rings, the guide rings extend to abut against the rotation shell and are in sliding connection with the rotation shell, and the linkage shell and the rotation shell are provided with communication ports opposite to the injection nozzle. The utility model provides a needleless injector which is not easy to slide.

Description

Needleless injector

Technical Field

The utility model relates to a syringe, in particular to a needleless syringe.

Background

The needleless injection is also called jet injection, and is a medical apparatus and instrument device which uses the instantaneous high pressure generated by a power source to make the medicine in the injector form high-speed and high-pressure jet flow through a nozzle, so that the medicine penetrates the outer layer of skin to subcutaneous tissue layers, intradermal tissue layers and the like to release the medicine effect.

When the existing needleless injector is used, the needleless injector is pressed on the skin and then injected, but the situation that the needleless injector slides easily occurs, so that the using effect of the needleless injector is greatly affected.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model aims to provide a needleless injector which is not easy to slide.

In order to achieve the above purpose, the present utility model provides the following technical solutions: including the syringe body, the syringe body has injection nozzle, including the linkage casing, rotate casing and push spring, the linkage casing sets up on the syringe body and linkage casing and syringe body linkage, injection nozzle is located the linkage casing, it locates outside the linkage casing to rotate the casing cover, push spring sets up between rotation casing and linkage casing and drive rotation casing along keeping away from the direction removal of linkage casing, be provided with a plurality of guide rings on the linkage casing, the guide ring extends to and offsets with rotation casing and slide with rotation casing and be connected, be provided with the intercommunication mouth relative with injection nozzle on linkage casing and the rotation casing, linkage casing and rotation casing both rotate the cooperation and slide the cooperation, how the syringe body carries out the injection is market conventional technique, so the introduction is not described in detail herein.

Through adopting above-mentioned technical scheme, when needs use, will rotate the casing and wait to inject skin department and offset, and press, the promotion spring is compressed, the relative rotation casing slip of linkage casing promptly, and linkage casing and syringe body linkage, make the injection nozzle be close to the mouth that rotates, simultaneously, because the external force presses, wait to inject skin department's partial skin and get into the linkage casing through rotating the mouth and extend all around, until the linkage mouth offsets with getting into linkage casing's skin, fixed to the skin to a certain extent this moment, then inject by the syringe body, the phenomenon that the relative skin of syringe body produced to slide can not appear, the effectual degree of accuracy that has improved the injection has guaranteed the result of use.

The utility model is further provided with: the T-shaped opening is formed in the rotary shell, the T-shaped opening comprises a vertical slide rail with the same sliding direction as the rotary shell and a transverse slide rail perpendicular to the vertical slide rail, a limiting rod is arranged on the linkage shell and extends to the T-shaped opening and moves along the T-shaped opening, and the limiting rod is provided with an operation end located outside the T-shaped opening.

Through adopting above-mentioned technical scheme, rotate the rotation casing before needing to use for the gag lever post that is in the horizontal slide removes to the intersection of horizontal slide and vertical slide, under the effect of push spring, the gag lever post removes to vertical slide extreme, the relative linkage casing's of rotation casing distance is furthest this moment, then just can inject using this equipment, after using, press the rotation casing, just can make the gag lever post remove to the intersection of horizontal slide and vertical slide, then rotatory rotation casing, make the rotation casing unable relative linkage casing slide, play the effect of accomodating when not using, and the gag lever post is in the position of vertical slide, can observe the relative position of rotation casing and linkage casing.

The utility model is further provided with: the sliding rail is characterized by comprising a protective sleeve, wherein the protective sleeve is sleeved outside the rotating shell, and a sliding rail for sliding an operation end is arranged in the protective sleeve.

Through adopting above-mentioned technical scheme, after using, will slide the track and the operation end is relative to slide into, play the protection to rotating the casing, avoid causing the pollution to rotating the mouth, make whole more pleasing to the eye simultaneously.

The utility model is further provided with: the periphery of the nozzle is provided with a protection gasket.

Through adopting above-mentioned technical scheme, after waiting to inject skin and getting into the linkage casing, can finally offset with the protection gasket for during the injection, can not influence user's use comfort because of the fixed to skin.

The utility model is further provided with: the communication port comprises a linkage port and a rotating port, wherein the linkage port is arranged on the linkage shell, the size and shape of the linkage port are matched with those of the protection gasket, and the rotating port is arranged on the rotating shell.

The utility model is further provided with: the linkage shell on be provided with push ring and push ring is located the guide ring below, push spring's one end is fixed in push ring, the other end rotates to set up in the rotation shell bottom.

Through adopting above-mentioned technical scheme, because linkage casing and rotation casing both rotate the cooperation and slide the cooperation, so the promotion spring only need one end fix on the push ring, and the other end is placed in rotation casing bottom, avoids the promotion spring to cause the influence to the rotation of rotation casing, perhaps adopts the slip ring that slides along the linkage casing for the promotion spring other end is fixed on the slip ring, and the slip ring offsets with rotation casing bottom, can accomplish above-mentioned action equally.

Drawings

FIG. 1 is a schematic view of the protective sheath of the present utility model separated from the syringe body;

FIG. 2 is a partial cross-sectional view of the present utility model;

FIG. 3 is an enlarged view of a portion of the present utility model;

FIG. 4 is an enlarged view B of a portion of the present utility model;

fig. 5 is a schematic structural view of the protective sleeve of the present utility model sleeved on the rotary housing.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-5, the utility model discloses a needleless injector, which comprises an injector body 1, wherein the injector body 1 is provided with a nozzle 11, the injector comprises a linkage shell 2, a rotation shell 3 and a pushing spring 4, the linkage shell 2 is arranged on the injector body 1, the linkage shell 2 is in linkage with the injector body 1, the nozzle 11 is positioned in the linkage shell 2, the rotation shell 3 is sleeved outside the linkage shell 2, the pushing spring 4 is arranged between the rotation shell 3 and the linkage shell 2 and drives the rotation shell 3 to move along the direction far away from the linkage shell 2, the linkage shell 2 is provided with a plurality of guide rings 5, the guide rings 5 extend to abut against the rotation shell 3 and are in sliding connection with the rotation shell 3, the linkage shell 2 and the rotation shell 3 are provided with a communication port 6 opposite to the nozzle 11, the linkage shell 2 and the rotation shell 3 are in rotating fit and sliding fit, the syringe body 1 is a conventional technique in the market, so that it will not be described in detail herein, when the syringe body is required to be used, the rotating housing 3 is abutted against the skin to be injected, and the pushing spring 4 is compressed, i.e. the linkage housing 2 slides relative to the rotating housing 3, and the linkage housing 2 and the syringe body 1 are linked, so that the nozzle 11 is close to the rotating opening 62, at the same time, due to the pressing of the external force, part of the skin at the skin to be injected enters the linkage housing 2 through the rotating opening 62 and extends along the periphery until the linkage opening 61 abuts against the skin entering the linkage housing 2, at this time, the skin is fixed to a certain extent, then the syringe body 1 is used for injection, the phenomenon that the syringe body 1 slides relative to the skin does not occur, the injection accuracy is effectively improved, and the use effect is ensured, and the arrangement of the guide ring 5 makes the relative movement of the linkage housing 2 and the rotation housing 3 smoother.

The T-shaped opening 7 is formed in the rotary shell 3, the T-shaped opening 7 comprises a vertical slideway 72 with the same sliding direction as the rotary shell 3 and a transverse slideway 71 perpendicular to the vertical slideway 72, the linkage shell 2 is provided with a limiting rod 8, the limiting rod 8 extends to the T-shaped opening 7 and moves along the T-shaped opening 7, the limiting rod 8 is provided with an operation end 81 positioned outside the T-shaped opening 7, before the rotary shell 3 is required to be used, the limiting rod 8 positioned at the transverse slideway 71 moves to the intersection opening of the transverse slideway 71 and the vertical slideway 72, under the action of the pushing spring 4, the limiting rod 8 moves to the lowest end of the vertical slideway 72, at the moment, the distance of the rotary shell 3 relative to the linkage shell 2 is furthest, then the injection can be performed by using the device, after the use is finished, the rotary shell 3 is pressed, the limiting rod 8 can move to the opening of the transverse slideway 71 and the vertical slideway 72, then the rotary shell 3 cannot slide relative to the linkage shell 2, the effect of storing when not used is achieved, the limiting rod 8 is positioned at the intersection opening 72, and the position of the vertical slideway 72 can be observed, and the position of the rotary shell 3 relative to the shell 2 can slide relative to the observation shell 2.

Including protective sheath 9, protective sheath 9 cover is located outside the rotation casing 3, is provided with the track 91 that slides that supplies the operation end 81 to slide in the protective sheath 9, after finishing using, will slide track 91 and operation end 81 relatively to slide in, play the protection to rotation casing 3, avoid causing the pollution to rotating mouth 62, make whole more pleasing to the eye simultaneously.

The periphery of the nozzle 11 is provided with a protection gasket 12, and after skin to be injected enters the linkage housing 2, the skin to be injected can be propped against the protection gasket 12 finally, so that the comfort of a user is not affected due to the fixation of the skin during injection.

The communication port 6 comprises a linkage port 61 and a rotation port 62, the linkage port 61 is arranged on the linkage housing 2, the size and shape of the linkage port 61 are matched with those of the protection gasket 12, and the rotation port 62 is arranged on the rotation housing 3.

The linkage casing 2 is provided with a push ring 21, the push ring 21 is positioned below the guide ring 5, one end of the push spring 4 is fixed on the push ring 21, the other end of the push spring is rotatably arranged at the bottom of the rotary casing 3, and as the linkage casing 2 and the rotary casing 3 are in running fit and sliding fit, the push spring 4 only needs one end to be fixed on the push ring 21, the other end of the push spring is arranged at the bottom of the rotary casing 3, so that the push spring 4 is prevented from influencing the rotation of the rotary casing 3, or a sliding ring sliding along the linkage casing 2 is adopted, the other end of the push spring 4 is fixed on the sliding ring, and the sliding ring abuts against the bottom of the rotary casing 3, so that the actions can be completed.

Specific examples: before use, the protective sleeve 9 is taken down from the injector body 1, and then the rotating shell 3 is rotated, so that the limiting rod 8 positioned on the transverse slideway 71 moves to the intersection of the transverse slideway 71 and the vertical slideway 72, under the action of the pushing spring 4, the limiting rod 8 moves to the lowest end of the vertical slideway 72, the rotating shell 3 is propped against the skin to be injected, and the pushing spring 4 is compressed, namely the linkage shell 2 slides relative to the rotating shell 3, and the linkage shell 2 and the injector body 1 are linked, so that the nozzle 11 is close to the rotating opening 62, meanwhile, due to the pressing of an external force, part of skin at the skin to be injected enters the linkage shell 2 through the rotating opening 62 and extends along the periphery until the linkage opening 61 is propped against the skin entering the linkage shell 2, at the moment, the skin is fixed to a certain extent, then the injector body 1 is injected, after the injection is finished, the rotating shell 3 is pressed, so that the limiting rod 8 moves to the intersection of the transverse slideway 71 and the vertical slideway 72, then the rotating shell 3 is rotated, so that the rotating shell 3 cannot slide relative to the linkage shell 2, and finally the sliding end 91 slides relative to the protective sleeve 9 is covered.

Claims

1. A needleless injector comprising an injector body having an injection nozzle, characterized in that: including linkage casing, rotation casing and push spring, the linkage casing sets up on the syringe body and linkage casing and syringe body linkage, and injection nozzle is located the linkage casing, and the linkage casing is located to rotation casing cover, and push spring sets up between rotation casing and linkage casing and drive rotation casing along keeping away from the direction removal of linkage casing, is provided with a plurality of guide rings on the linkage casing, and the guide ring extends to and offsets and slide with rotation casing and be connected, is provided with the intercommunication mouth relative with injection nozzle on linkage casing and the rotation casing.

2. A needleless injector as claimed in claim 1, wherein: the T-shaped opening is formed in the rotary shell, the T-shaped opening comprises a vertical slide rail with the same sliding direction as the rotary shell and a transverse slide rail perpendicular to the vertical slide rail, a limiting rod is arranged on the linkage shell and extends to the T-shaped opening and moves along the T-shaped opening, and the limiting rod is provided with an operation end located outside the T-shaped opening.

3. A needleless injector as claimed in claim 2, wherein: the sliding rail is characterized by comprising a protective sleeve, wherein the protective sleeve is sleeved outside the rotating shell, and a sliding rail for sliding an operation end is arranged in the protective sleeve.

4. A needleless injector as claimed in claim 1, wherein: the periphery of the nozzle is provided with a protection gasket.

5. A needleless injector as in claim 4 wherein: the communication port comprises a linkage port and a rotating port, wherein the linkage port is arranged on the linkage shell, the size and shape of the linkage port are matched with those of the protection gasket, and the rotating port is arranged on the rotating shell.

6. A needleless injector as claimed in claim 1, wherein: the linkage shell on be provided with push ring and push ring is located the guide ring below, push spring's one end is fixed in push ring, the other end rotates to set up in the rotation shell bottom.