CN215386572U

CN215386572U - Disposable syringe with novel push rod structure

Info

Publication number: CN215386572U
Application number: CN202120751130.4U
Authority: CN
Inventors: 张斌
Original assignee: Mishawa Medical Industry Co ltd Shanghai
Current assignee: Mishawa Medical Industry Co ltd Shanghai
Priority date: 2021-04-13
Filing date: 2021-04-13
Publication date: 2022-01-04
Anticipated expiration: 2031-04-13

Abstract

The application provides a disposable syringe with a novel push rod structure, and belongs to the technical field of medical instruments. This disposable syringe with novel push rod structure includes body and injection unit, injection unit is including advancing piece, the connecting block, the elastic component, the kelly, the ejector pad, the link, the catch bar, depression bar and joint spare, when pressing the catch bar injection liquid, the catch bar promotes the depression bar and removes, depression bar one end injects in the second slot and then promotes the ejector pad and removes, the ejector pad promotes to advance an extrusion injection liquid and injects, depression bar one end extrusion kelly simultaneously, make in the kelly shift recess, make the kelly no longer joint in the second slot, further the catch bar promote joint spare joint in the link, thereby make the depression bar not slide each other with the link, finally make to advance a separation of ejector pad and ejector pad, the unable injection that extracts once more of pulling catch bar, thereby to a great extent has avoided reuse.

Description

Disposable syringe with novel push rod structure

Technical Field

The application relates to the field of medical equipment, in particular to a disposable injector with a novel push rod structure.

Background

At present, after a disposable sterile syringe is used, products are forbidden to be used for the second time, but some used syringes are often recycled for the second time by illegal merchants, cross infection of users is easily caused, and certain potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

In order to remedy the above deficiencies, the present application provides a disposable syringe with a novel plunger structure, which aims to improve the problems mentioned in the background art.

The embodiment of the application provides a disposable injector with a novel push rod structure, which comprises a tube body and an injection assembly.

The injection component comprises a propelling piece, a connecting block, an elastic piece, a clamping rod, a pushing block, a connecting frame, a pushing rod, a pressing rod and a clamping piece, the propelling part is arranged in the pipe body in a sliding way, the connecting block is arranged on one side of the propelling part, the connecting block is provided with a groove, the elastic element is arranged in the groove, one end of the clamping rod is arranged in the groove in a sliding manner, one end of the clamping rod is fixedly connected with the elastic piece, the push block is provided with a first slot, the connecting block is inserted in the first slot, the first slot is communicated with a second slot, one end of the clamping rod is clamped in the second slot, the link is arranged in ejector pad one side, the depression bar slide run through in the link, catch bar one end fixed connection in the depression bar, the joint spare set up in catch bar one end.

In the implementation process, the push rod is pulled during use, the push rod drives the press rod to move, the press rod drives the connecting frame to move, the connecting frame drives the push block to move, the push block drives the pushing piece and the connecting block to move, injection liquid is extracted by negative pressure in the pipe body, when the push rod is pressed to inject the liquid, the push rod pushes the press rod to move, one end of the press rod is inserted into the second slot to further push the push block to move, the push block pushes the pushing piece to extrude the injection liquid to be injected, meanwhile, one end of the press rod extrudes the clamping rod to enable the clamping rod to move into the groove, the clamping rod is not clamped in the second slot, the push rod further pushes the clamping piece to be clamped in the connecting frame, the press rod is not slid with the connecting frame, finally the pushing piece is separated from the push block, the push rod can not extract the injection liquid again, and therefore recycling is avoided to a great extent.

In a specific embodiment, the tube body comprises a needle tube and an injection head, and the injection head is communicated with one end of the needle tube.

In a specific embodiment, the injection head is provided with a needle at one end, and the needle is sleeved with a protective sleeve.

In a specific embodiment, the needle tube is a transparent tube, and the surface of the needle tube is provided with scale marks.

In the implementation process, the transparent needle tube is provided with scale marks, so that medical personnel can draw and inject a proper amount of liquid medicine conveniently.

In a specific embodiment, one end of the needle tube, which is far away from the injection head, is provided with a limiting handle, and one side of the limiting handle is provided with a limiting groove.

In the implementation process, the medical staff can buckle the limiting handle by fingers to apply force to the push rod.

In a specific embodiment, the propelling part comprises a rubber head and a fixed block, the rubber head is fixedly connected to one side of the fixed block, and the connecting block is fixedly connected to one side of the fixed block.

In the implementation process, the rubber head is arranged to increase the fitting degree with the inner wall of the pipe body, so that liquid leakage is avoided.

In a specific embodiment, the elastic member includes a spring and a limit ring, the limit ring is fixedly sleeved at one end of the clamping rod, the limit ring is in clearance fit with the inner wall of the groove, and one end of the spring abuts against one side of the limit ring.

In the implementation process, the clamping rod is pushed to be clamped in the second slot through the arrangement of the spring and the limiting ring, and the clamping rod can retract and be separated from the second slot.

In a specific embodiment, the joint piece includes inserted bar and elasticity fixture block, inserted bar fixed connection in catch bar one side, the elasticity fixture block set up in inserted bar one end, the link is opened and is equipped with the jack, the inserted bar with jack inner wall clearance fit.

In the implementation process, the elastic clamping block is clamped in the card insertion hole after the insertion rod drives the elastic clamping block to penetrate through the insertion hole.

In a specific embodiment, the pressure lever is a T-shaped lever, the small end of the T-shaped pressure lever is fixedly connected to the push rod, and the large end of the T-shaped pressure lever is in clearance fit with the inner wall of the second slot.

In the implementation process, the T-shaped pressure lever can pull the connecting frame when being used for the first time, and the T-shaped pressure lever cannot slip from the connecting frame.

In a specific embodiment, one end of the push rod is provided with a push handle, and one side of the push handle is provided with an anti-skid thread.

In the implementation process, the medical care personnel can conveniently press the push handle to inject by fingers, and the anti-slip lines prevent the fingers from sliding during injection.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a schematic view of a disposable injector with a novel push rod structure provided in the present application;

fig. 2 is a schematic structural view of a pipe body according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of a syringe according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a pusher member according to an embodiment of the present disclosure;

fig. 5 is an enlarged schematic structural diagram of a according to an embodiment of the present application;

FIG. 6 is a schematic structural view of a push rod provided in an embodiment of the present application;

fig. 7 is a schematic structural diagram of a clip according to an embodiment of the present disclosure.

In the figure: 100-a tube body; 110-needle tube; 111-graduation mark; 112-a limit handle; 120-an injection head; 130-a needle; 131-a protective jacket; 200-an injection assembly; 210-a pusher; 211-rubber head; 212-fixed block; 220-connecting block; 221-grooves; 230-an elastic member; 231-a spring; 232-a spacing ring; 240-clamping rod; 250-a push block; 251-a first slot; 252-a second slot; 260-a connecting frame; 261-a jack; 270-a push rod; 271-push handle; 280-a pressure bar; 290-a clip; 291-a plunger; 292-elastic cartridge.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.

To make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

Thus, the following detailed description of the embodiments of the present application, as presented in the figures, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and thus should not be considered limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1-7, the present application provides a disposable injector with a novel plunger structure including a barrel 100 and an injection assembly 200.

Referring to fig. 2 and 3, the tube 100 includes a needle tube 110 and an injection head 120, the injection head 120 is disposed at one end of the needle tube 110, a needle head 130 is disposed at one end of the injection head 120, the needle head 130 is sleeved with a protective sleeve 131, the needle tube 110 is a transparent tube, scale marks 111 are disposed on the surface of the needle tube 110, and the scale marks 111 are disposed on the transparent needle tube 110, so that medical personnel can extract and inject a proper amount of liquid medicine.

Referring to fig. 4, 5, 6 and 7, the injection assembly 200 includes a pushing member 210, a connecting block 220, an elastic member 230, a clamping rod 240, a pushing block 250, a connecting frame 260, a pushing rod 270, a pressing rod 280 and a clamping member 290, the pushing member 210 is slidably disposed in the tube 100, the connecting block 220 is disposed at one side of the pushing member 210, specifically, the pushing member 210 includes a rubber head 211 and a fixing block 212, the rubber head 211 is fixedly connected to one side of the fixing block 212, the connecting block 220 is integrally formed on the fixing block 212, the rubber head 211 is disposed to increase the degree of adhesion with the inner wall of the tube 100 to ensure no leakage, the connecting block 220 is provided with a groove 221, the elastic member 230 is disposed in the groove 221, one end of the clamping rod 240 is slidably disposed in the groove 221, one end of the clamping rod 240 is fixedly connected to the elastic member 230, the pushing block 250 is provided with a first slot 251, the connecting block 220 is inserted in the first slot 251, the first slot 251 is communicated with a second slot 252, one end of the clamping rod 240 is clamped in the second slot 252, the connecting frame 260 is arranged on one side of the pushing block 250, the pressing rod 280 penetrates through the connecting frame 260 in a sliding mode, one end of the pushing rod 270 is fixedly connected to the pressing rod 280, the pushing rod 270 is integrally formed on the pressing rod 280, specifically, the pressing rod 280 is a T-shaped rod, the small end of the T-shaped pressing rod 280 is fixedly connected to the pushing rod 270, the large end of the T-shaped pressing rod 280 is in clearance fit with the inner wall of the second slot 252, the T-shaped pressing rod 280 can pull the connecting frame 260 when being used for the first time without slipping from the connecting frame 260, it needs to be explained that one end of the pushing rod 270 is provided with a pushing handle 271, anti-slip threads are arranged on one side of the pushing handle 271, fingers of medical workers can conveniently press the pushing handle 271 to inject, the fingers to prevent the injection from slipping, and the clamping piece 290 is arranged at one end of the pushing rod 270.

In this embodiment, the elastic member 230 includes a spring 231 and a limit ring 232, the limit ring 232 is fixedly sleeved at one end of the clamping rod 240, the limit ring 232 is integrally formed on the clamping rod 240, the limit ring 232 is in clearance fit with the inner wall of the groove 221, one end of the spring 231 abuts against one side of the limit ring 232, and through the arrangement of the spring 231 and the limit ring 232, the clamping rod 240 is pushed to be clamped in the second slot 252 on one hand, and on the other hand, the retracting clamping rod 240 can be separated from the second slot 252.

Referring to fig. 4 and 7, the locking member 290 includes an insertion rod 291 and an elastic locking block 292, the insertion rod 291 is fixedly connected to one side of the push rod 270, the insertion rod 291 is integrally formed on the push rod 270, the elastic locking block 292 is disposed at one end of the insertion rod 291, the connecting frame 260 is provided with an insertion hole 261, the insertion rod 291 is in clearance fit with an inner wall of the insertion hole 261, and the elastic locking block 292 is locked in the locking hole 261 after the insertion rod 291 drives the elastic locking block 292 to pass through the insertion hole 261.

The working principle of the disposable injector with the novel push rod structure is as follows: when the injection syringe is used, the push rod 270 is pulled, the push rod 270 drives the press rod 280 to move, the press rod 280 drives the connecting frame 260 to move, the connecting frame 260 drives the push block 250 to move, the push block 250 drives the pushing piece 210 and the connecting block 220 to move, injection liquid is extracted by negative pressure in the needle tube 110, when the push handle 271 is pressed to inject the injection liquid, the push rod 270 drives the press rod 280 to move, one end of the press rod 280 is inserted into the second slot 252 to further push the push block 250 to move, the fixed block 212 pushes the rubber head 211 to extrude the injection liquid to inject, one end of the press rod 280 extrudes the clamping rod 240 at the same time, the clamping rod 240 moves into the groove 221, the clamping rod 240 is not clamped in the second slot 252, the push rod 270 further pushes the insert rod 291 to move, the insert rod 291 drives the clamping block 292 to penetrate through the insertion hole 261, the insert rod 291 is clamped in the insertion hole 261 of the connecting frame 260, and the press rod 280 and the connecting frame 260 do not slide mutually, finally, the pushing piece 210 and the pushing block 250 are separated, and the injection liquid cannot be extracted again by pulling the pushing rod 270, so that the recycling is avoided to a great extent.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A disposable syringe with a novel push rod structure is characterized by comprising

A pipe body (100);

the injection assembly (200) comprises a propelling part (210), a connecting block (220), an elastic part (230), a clamping rod (240), a pushing block (250), a connecting frame (260), a pushing rod (270), a pressing rod (280) and a clamping part (290), wherein the propelling part (210) is arranged in the pipe body (100) in a sliding manner, the connecting block (220) is arranged on one side of the propelling part (210), a groove (221) is formed in the connecting block (220), the elastic part (230) is arranged in the groove (221), one end of the clamping rod (240) is arranged in the groove (221) in a sliding manner, one end of the clamping rod (240) is fixedly connected to the elastic part (230), a first slot (251) is formed in the pushing block (250), the connecting block (220) is inserted into the first slot (251), and a second slot (252) is communicated with the first slot (251), card pole (240) one end joint in second slot (252), link (260) set up in ejector pad (250) one side, depression bar (280) slide run through in link (260), catch bar (270) one end fixed connection in depression bar (280), joint spare (290) set up in catch bar (270) one end.

2. The disposable injector with the novel push rod structure as claimed in claim 1, wherein the tube body (100) comprises a needle tube (110) and an injection head (120), and the injection head (120) is communicatively disposed at one end of the needle tube (110).

3. The disposable injector with novel push rod structure as claimed in claim 2, wherein a needle (130) is provided at one end of the injection head (120), and a protective sheath (131) is sleeved on the needle (130).

4. The disposable syringe with the novel push rod structure is characterized in that the needle tube (110) is a transparent tube, and the surface of the needle tube (110) is provided with scale marks (111).

5. The disposable syringe with the novel push rod structure as claimed in claim 4, wherein a limit handle (112) is arranged at one end of the needle tube (110) far away from the injection head (120), and a limit groove is formed at one side of the limit handle (112).

6. The disposable injector with the novel push rod structure as claimed in claim 1, wherein the propelling member (210) comprises a rubber head (211) and a fixed block (212), the rubber head (211) is fixedly connected to one side of the fixed block (212), and the connecting block (220) is fixedly connected to one side of the fixed block (212).

7. The disposable syringe with the novel push rod structure is characterized in that the elastic part (230) comprises a spring (231) and a limiting ring (232), the limiting ring (232) is fixedly sleeved at one end of the clamping rod (240), the limiting ring (232) is in clearance fit with the inner wall of the groove (221), and one end of the spring (231) abuts against one side of the limiting ring (232).

8. The disposable injector with a novel push rod structure as claimed in claim 1, wherein the clamping member (290) comprises an insertion rod (291) and an elastic clamping block (292), the insertion rod (291) is fixedly connected to one side of the push rod (270), the elastic clamping block (292) is arranged at one end of the insertion rod (291), the connecting frame (260) is provided with a plug hole (261), and the insertion rod (291) and the inner wall of the plug hole (261) are in clearance fit.

9. The disposable injector with the novel push rod structure as claimed in claim 1, wherein the press rod (280) is a T-shaped rod, the small end of the T-shaped press rod (280) is fixedly connected to the push rod (270), and the large end of the T-shaped press rod (280) is in clearance fit with the inner wall of the second slot (252).

10. The disposable injector with the novel push rod structure as claimed in claim 1, wherein a push handle (271) is arranged at one end of the push rod (270), and anti-slip threads are arranged on one side of the push handle (271).