CN221045272U

CN221045272U - Incremental syringe

Info

Publication number: CN221045272U
Application number: CN202321916873.8U
Authority: CN
Inventors: 蔡佳; 姚宏宇; 高平; 蔡小静
Original assignee: Changzhou Jinlong Medical Plastic Instrument Co ltd
Current assignee: Changzhou Jinlong Medical Plastic Instrument Co ltd
Priority date: 2023-07-20
Filing date: 2023-07-20
Publication date: 2024-05-31
Anticipated expiration: 2033-07-20

Abstract

The utility model discloses an incremental injector, which comprises an injector cylinder body; the syringe needle is arranged at the injection end of the syringe barrel, and the drawing component is arranged in the syringe barrel. According to the utility model, the operation handle is pressed in the injection process, so that the liquid medicine can be injected through the syringe needle under the sealing effect between the sealing piston and the syringe barrel, and when the limiting ring on the piston rod moves to be mutually abutted with the side surface of the syringe barrel, the injection can be stopped, the sliding clamping rod is pulled by the operation block, the sliding clamping rod is separated from the corresponding limiting clamping groove, then the limiting ring is adjusted in a sliding manner left and right, and after the adjustment is completed, the operation block is released, so that the sliding clamping rod can be driven to be clamped into the corresponding limiting clamping groove under the elastic effect of the sleeve spring, and further, the convenient adjustment and fixation of the sealing piston can be realized, and the convenient adjustment of the injection quantity of the liquid medicine can be realized.

Description

Incremental syringe

Technical Field

The utility model relates to the technical field of syringes, in particular to an incremental syringe.

Background

The common, seemingly simple task of administering a drug injection using a syringe is often very complex in practice. With today's commonly used syringes, when a quantity of medication is to be removed from a vial (vial), the clinician inserts the syringe needle into the vial, places the vial at eye level, aspirates or withdraws a slightly higher than desired quantity of medication from the vial into the syringe, and then slowly injects a portion of the medication from the syringe back into the vial until the desired quantity of medication is contained in the syringe. Typically, when a user attempts to slowly re-empty the syringe contents into the vial, more of the drug than intended is inadvertently returned to the vial. Thus, the clinician has to inject less than the required medication or repeat the process again. If the clinician is unable to place the bottle at eye level (e.g., when aspirating from a large or hanging container), the process is more difficult and inaccurate due to the different viewing angles.

The application number is as follows: CN201580063850.9 discloses a delta syringe useful for multiple injections of a drug such as botulinum toxin. The syringe includes detents on the syringe plunger that provide a tactile feel, discrete audible sounds or "clicks", or preferably both, for each unit of medication drawn into a single syringe and injected from a single syringe. Thus, during use of the syringe, there is no need to look at the syringe, or place it at eye level.

Although the above comparative case solves the corresponding technical problems, the above comparative case has the following drawbacks:

according to the technical scheme, when the injector is used for injection, the injection quantity is inconvenient to adjust, so that certain inconvenience exists when the injector is used.

Disclosure of utility model

The utility model aims to provide an incremental injector, which can inject liquid medicine through an injector needle under the sealing effect between a sealing piston and an injector cylinder body by pressing an operation handle in the injection process, and stop injection when a limiting ring on a piston rod moves to be mutually abutted with the side surface of the injector cylinder body, and the sliding clamping rod is pulled by an operation block to be separated from a corresponding limiting clamping groove, then the limiting ring is adjusted in a left-right sliding manner, and after the adjustment is completed, the operation block is released, so that the sliding clamping rod can be driven to be clamped into the corresponding limiting clamping groove under the elastic effect of a sleeve spring, and further the convenient adjustment and fixation of the sealing piston can be realized, and the convenient adjustment of the injection quantity of the liquid medicine can be realized.

In order to achieve the above purpose, the main technical scheme adopted by the utility model comprises the following steps:

An incremental syringe, comprising:

A syringe barrel;

The syringe needle is arranged at the injection end of the syringe barrel, the drawing component is arranged in the syringe barrel and comprises a sealing piston which is connected in the syringe barrel in a sliding way, a piston rod is fixedly connected to the side face of the sealing piston, an operation handle is fixedly connected to one end of the piston rod, which is far away from the sealing piston, and a plurality of limit clamping grooves which are arranged in an equidistant way are formed in the bottom of the piston rod;

The limiting assembly is used for limiting the pumping distance of the piston rod and comprises a limiting ring which is connected to the piston rod in a sliding mode, and a clamping assembly used for fixing the limiting ring is arranged on the side face of the limiting ring.

Above-mentioned incremental syringe, wherein, the joint subassembly includes fixed connection be in the installation piece of spacing ring side, the side fixedly connected with installation sliding sleeve of installation piece, sliding connection on the installation sliding sleeve with spacing draw-in groove assorted slip draw-in lever, the bottom fixedly connected with operation piece of slip draw-in lever is located the operation piece with the cover is equipped with the cover spring on the slip draw-in lever between the installation sliding sleeve.

Above-mentioned incremental syringe, wherein, the one end of cover spring with installation sliding sleeve fixed connection, the other end of cover spring with operation piece fixed connection.

According to the incremental syringe, one end of the sliding clamping rod, which is close to the limiting clamping groove, is of an arc-shaped design.

Above-mentioned incremental syringe, wherein, the slip draw-in lever is close to the one end activity of spacing draw-in groove runs through spacing draw-in groove, and extends to the inside of spacing draw-in groove.

Above-mentioned incremental syringe, wherein, the top fixedly connected with spacing slider of spacing ring inner wall, the top of piston rod just corresponds spacing slider's position seted up with spacing slider assorted spacing spout.

The incremental injector is characterized in that the bottom of the limiting sliding block movably penetrates through the limiting sliding groove and extends to the inside of the limiting sliding groove, and the bottom of the limiting sliding block is in sliding connection with the inner wall of the limiting sliding groove.

The utility model has at least the following beneficial effects:

According to the incremental syringe, the operation handle is pressed in the injection process, so that liquid medicine can be injected through the syringe needle under the sealing effect between the sealing piston and the syringe barrel, and when the limiting ring on the piston rod moves to be mutually abutted with the side face of the syringe barrel, the injection can be stopped, the sliding clamping rod is pulled by the operation block, the sliding clamping rod is separated from the corresponding limiting clamping groove, then the limiting ring is adjusted in a sliding mode left and right, and after the adjustment is completed, the operation block is released, so that the sliding clamping rod can be driven to be clamped into the corresponding limiting clamping groove under the elastic effect of the sleeve spring, and further convenient adjustment and fixation of the sealing piston can be realized, and therefore convenient adjustment of the injection quantity of the liquid medicine can be realized.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:

FIG. 1 is a schematic view of an incremental syringe according to the present utility model;

FIG. 2 is a schematic view of the drawer assembly of the incremental syringe of the present utility model;

FIG. 3 is a schematic view of an alternative view of a drawer assembly of the incremental syringe of the present utility model;

fig. 4 is a schematic view of a partial enlarged structure at a in fig. 1 according to the present utility model.

Reference numerals illustrate:

1. A syringe barrel; 2. a syringe needle; 3. a pull assembly; 4. a limit component;

301. a sealing piston; 302. a piston rod; 303. an operating handle; 304. a limit clamping groove;

41. A limit sliding block; 411. limiting sliding grooves;

401. a limiting ring; 402. a clamping assembly;

4021. A mounting block; 4022. installing a sliding sleeve; 4023. a sliding clamping rod; 4024. an operation block; 4025. and (5) sleeving the spring.

Detailed Description

The following detailed description of embodiments of the present application will be given with reference to the accompanying drawings and examples, by which the implementation process of how the present application can be applied to solve the technical problems and achieve the technical effects can be fully understood and implemented.

Referring to fig. 1 to 4, an incremental syringe according to an embodiment of the present utility model includes: a syringe barrel 1;

The syringe needle 2 is arranged at the injection end of the syringe barrel 1, the drawing component 3 is arranged in the syringe barrel 1, the drawing component 3 comprises a sealing piston 301 which is connected in the syringe barrel 1 in a sliding way, a piston rod 302 is fixedly connected to the side surface of the sealing piston 301, an operation handle 303 is fixedly connected to one end of the piston rod 302 away from the sealing piston 301, and a plurality of limit clamping grooves 304 which are arranged at equal intervals are formed in the bottom of the piston rod 302;

The limiting assembly 4 is used for limiting the pumping distance of the piston rod 302, the limiting assembly 4 comprises a limiting ring 401 which is connected to the piston rod 302 in a sliding manner, and a clamping assembly 402 used for fixing the limiting ring 401 is arranged on the side surface of the limiting ring 401;

The clamping assembly 402 comprises a mounting block 4021 fixedly connected to the side surface of the limiting ring 401, a mounting sliding sleeve 4022 is fixedly connected to the side surface of the mounting block 4021, a sliding clamping rod 4023 matched with the limiting clamping groove 304 is connected to the mounting sliding sleeve 4022 in a sliding manner, an operating block 4024 is fixedly connected to the bottom of the sliding clamping rod 4023, a sleeve spring 4025 is sleeved on the sliding clamping rod 4023 between the operating block 4024 and the mounting sliding sleeve 4022, one end of the sleeve spring 4025 is fixedly connected with the mounting sliding sleeve 4022, and the other end of the sleeve spring 4025 is fixedly connected with the operating block 4024;

Through adopting above-mentioned technical scheme, through pressing operation handle 303 in the injection process, thereby can be under the sealed effect between seal piston 301 and syringe barrel 1, inject the liquid medicine through syringe needle 2, and when spacing ring 401 on piston rod 302 moves to the side mutual butt with syringe barrel 1, can stop the injection, and through operation piece 4024 pulling slip bayonet catch 4023, and make slip bayonet catch 4023 break away from corresponding spacing draw-in groove 304, then with spacing ring 401 side-to-side sliding adjustment, after the regulation is accomplished, loosen operation piece 4024, consequently can drive slip bayonet catch 4023 card into corresponding spacing draw-in groove 304 under the elasticity effect of cover spring 4025, and then can realize seal piston 301's convenient regulation and fixed, consequently can realize the convenient regulation to the liquid medicine injection volume.

One end of the sliding clamping rod 4023, which is close to the limiting clamping groove 304, is in an arc-shaped design, and one end of the sliding clamping rod 4023, which is close to the limiting clamping groove 304, movably penetrates through the limiting clamping groove 304 and extends into the limiting clamping groove 304;

through adopting above-mentioned technical scheme, conveniently card slip card pole 4023 into spacing draw-in groove 304 to the spacing fixed convenience of spacing ring 401 has been improved.

The top of the inner wall of the limit ring 401 is fixedly connected with a limit sliding block 41, a limit sliding groove 411 matched with the limit sliding block 41 is formed in the position of the top of the piston rod 302 corresponding to the limit sliding block 41, and the bottom of the limit sliding block 41 movably penetrates through the limit sliding groove 411 and extends into the limit sliding groove 411 to be in sliding connection with the inner wall of the limit sliding groove 411;

Through adopting above-mentioned technical scheme, play spacing effect to spacing ring 401 to the stability of spacing ring 401 slip regulation has been increased.

The working principle of the utility model is as follows: by pressing the operation handle 303 in the injection process, the liquid medicine can be injected through the syringe needle 2 under the sealing action between the sealing piston 301 and the syringe barrel 1, and when the limiting ring 401 on the piston rod 302 moves to be mutually abutted with the side surface of the syringe barrel 1, the injection can be stopped, the sliding clamping rod 4023 is pulled by the operation block 4024, the sliding clamping rod 4023 is separated from the corresponding limiting clamping groove 304, then the limiting ring 401 is adjusted in a sliding manner left and right, after the adjustment is completed, the operation block 4024 is released, so that the sliding clamping rod 4023 can be driven to be clamped into the corresponding limiting clamping groove 304 under the elastic action of the sleeve spring 4025, and further, the convenient adjustment and fixation of the sealing piston 301 can be realized, and therefore, the convenient adjustment of the injection quantity of the liquid medicine can be realized.

While the foregoing description illustrates and describes the preferred embodiments of the present utility model, it is to be understood that the utility model is not limited to the forms disclosed herein, but is not to be construed as limited to other embodiments, and is capable of numerous other combinations, modifications and environments and is capable of changes or modifications within the scope of the inventive concept as described herein, either as a result of the foregoing teachings or as a result of the knowledge or technology in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the utility model are intended to be within the scope of the appended claims.

Claims

1. An incremental syringe, comprising:

A syringe barrel (1);

The syringe needle (2) is arranged at the injection end of the syringe barrel (1), the drawing component (3) is arranged in the syringe barrel (1), the drawing component (3) comprises a sealing piston (301) which is connected in the syringe barrel (1) in a sliding way, a piston rod (302) is fixedly connected to the side face of the sealing piston (301), an operation handle (303) is fixedly connected to one end, far away from the sealing piston (301), of the piston rod (302), and a plurality of limit clamping grooves (304) which are arranged in an equidistance way are formed in the bottom of the piston rod (302);

The limiting assembly (4) is used for limiting the pumping distance of the piston rod (302), the limiting assembly (4) comprises a limiting ring (401) which is connected to the piston rod (302) in a sliding mode, and a clamping assembly (402) used for fixing the limiting ring (401) is arranged on the side face of the limiting ring (401).

2. An incremental syringe according to claim 1 wherein: the clamping assembly (402) comprises a mounting block (4021) fixedly connected to the side face of the limiting ring (401), a mounting sliding sleeve (4022) is fixedly connected to the side face of the mounting block (4021), a sliding clamping rod (4023) matched with the limiting clamping groove (304) is connected to the mounting sliding sleeve (4022) in a sliding mode, an operating block (4024) is fixedly connected to the bottom of the sliding clamping rod (4023), and a sleeve spring (4025) is sleeved on the sliding clamping rod (4023) between the operating block (4024) and the mounting sliding sleeve (4022).

3. An incremental syringe according to claim 2 wherein: one end of the sleeve spring (4025) is fixedly connected with the mounting sliding sleeve (4022), and the other end of the sleeve spring (4025) is fixedly connected with the operation block (4024).

4. An incremental syringe according to claim 3 wherein: one end of the sliding clamping rod (4023) close to the limiting clamping groove (304) is in an arc-shaped design.

5. An incremental syringe according to claim 4 wherein: one end of the sliding clamping rod (4023) close to the limiting clamping groove (304) movably penetrates through the limiting clamping groove (304) and extends into the limiting clamping groove (304).

6. An incremental syringe according to claim 5 wherein: the top of the inner wall of the limiting ring (401) is fixedly connected with a limiting sliding block (41), and a limiting sliding groove (411) matched with the limiting sliding block (41) is formed in the top of the piston rod (302) and corresponds to the position of the limiting sliding block (41).

7. An incremental syringe according to claim 6 wherein: the bottom of the limit sliding block (41) movably penetrates through the limit sliding groove (411) and extends to the inside of the limit sliding groove (411) to be in sliding connection with the inner wall of the limit sliding groove (411).