CN213552624U - Perfusion apparatus - Google Patents

Abstract

The application relates to a perfusion apparatus, including the body, establish its one end in this body for the cavity of open end, establish on the body and with the connecting pipe of cavity intercommunication, establish in the cavity and its lateral wall butt on the cavity inner wall piston, establish the push rod that is used for promoting the piston to remove in the cavity on the piston, establish the scale on the push rod and with push rod threaded connection and can be on the push rod adjusting ring that removes, adjusting ring can the butt on the body. The application is used for injection in medical treatment, and accurate injection can be realized.

Description

Perfusion apparatus

Technical Field

The application relates to the technical field of medical instruments, in particular to an infusion apparatus.

Background

The syringe consists of a syringe with a small hole at the front end and a matched plunger core rod, and is used for injecting a small amount of liquid or extracting the liquid into an area which cannot be accessed by other methods, and although part of the syringe is also provided with scales, the syringe cannot realize accurate injection.

Disclosure of Invention

The present application provides a syringe that helps to improve the accuracy of the injection.

The above object of the present application is achieved by the following technical solutions:

a syringe, comprising:

a body;

the cavity is arranged in the body, and one end of the cavity is an open end;

the connecting pipe is arranged on the body and communicated with the cavity;

the piston is arranged in the cavity, and the side wall of the piston is abutted against the inner wall of the cavity;

the push rod is arranged on the piston and used for pushing the piston to move in the cavity;

the scale is arranged on the push rod; and

the adjusting ring is in threaded connection with the push rod and can move on the push rod;

wherein, the adjusting ring can be abutted on the body.

In a possible implementation manner of the present application, the lateral surface of the adjusting ring is uniformly distributed with protrusions.

In one possible implementation of the present application, the cross-sectional shape of the protrusion is an arc in the moving direction of the push rod.

In a possible realization of the application, the axis of the protrusion is parallel to the direction of movement of the push rod.

In one possible implementation of the present application, a gap is provided between adjacent protrusions.

In one possible implementation of the present application, the scale is a numeric scale.

Drawings

Fig. 1 is a schematic view of an internal structure of a syringe provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of an adjusting ring according to an embodiment of the present disclosure.

Fig. 3 is a schematic cross-sectional structure diagram of a push rod according to an embodiment of the present disclosure.

Fig. 4 is a schematic structural diagram of threads on a push rod according to an embodiment of the present disclosure.

In the figure, 11, a body, 12, a cavity, 13, a connecting pipe, 14, a piston, 15, a push rod, 16, a scale, 17, an adjusting ring, 171, a bulge, 172 and a gap.

Detailed Description

The technical solution of the present application will be described in further detail below with reference to the accompanying drawings.

For the sake of understanding, the syringe is first briefly described, which is a syringe, but in the veterinary field, the common syringe is difficult to use because sometimes a fixed injection is needed, but the injected animal is not matched, and the problem of controlling the injection amount becomes a problem, and the problem of over-injection is easily caused.

For example, a worker prepares a tube of medicine and needs to inject a plurality of animals, which is mainly required to be performed quickly, each animal needs to inject an equal amount of medicine, and during the quick injection, it is difficult to control the injection amount or other persons are required to perform auxiliary operations.

Referring to fig. 1 and 2, a syringe is disclosed for an embodiment of the present application, the syringe mainly includes a body 11, a piston 14, a push rod 15, an adjusting ring 17, and the like, a cavity 12 is disposed inside the body 11, one end of the cavity 12 is an open end, and the other end is a closed end.

The body 11 is also provided with a connecting pipe 13, the body 11 and the connecting pipe 13 are integrally formed, the connecting pipe 13 is communicated with the cavity 12, and liquid in the cavity 12 can flow into a needle on the connecting pipe 13 through the connecting pipe 13 in the injection process.

The piston 14 is located in the cavity 12 and can move in the cavity 12, the power of the movement is provided by a push rod 15, and the piston 14 is sleeved on one end of the push rod 15.

It will be appreciated that the piston 14 is of a resilient material and therefore is able to bear against the inner wall of the cavity 12 to urge the flow of fluid within the cavity 12, and the push rod 15 is of a material of a hardness which acts to transmit the pressure applied by the user to the piston 14.

The push rod 15 is provided with a scale 16, the scale 16 is used for providing reference for a user, and in order to enable the user to quickly push a certain amount of liquid out of the cavity 12 when pushing the push rod 15, an adjusting ring 17 is additionally arranged on the push rod 15, the adjusting ring 17 is in threaded connection with the push rod 15, and the adjusting ring 17 can move on the push rod 15 in the process of rotating the adjusting ring 17.

In addition, the maximum outer diameter of the adjusting ring 17 is larger than the inner diameter of the cavity 12, so that in the process of pushing the push rod 15 to move, after the adjusting ring 17 is contacted with the body 11, the push rod 15 cannot move, and the adjusting ring 17 is matched with the scales 16, so that accurate injection can be realized.

For example, if the volume of the cavity 12 is 30ml and the injection amount is 5ml, then the push rod 15 can be pushed to 6ml by rotating the adjusting ring 17 to adjust the push rod 15 to achieve multiple precise injections, and the user only needs to push the push rod 15 quickly during the injection process without observing the scale 16 deliberately.

Before injection, for example, the adjusting ring 17 is first turned to the appropriate scale 16, and then the push rod 15 is pushed rapidly to inject a fixed amount of liquid into the animal, which is fast and which in turn enables a fixed amount of liquid to be injected, which is obviously most appropriate for animals that are not matched.

Referring to fig. 2, as an embodiment of the syringe provided by the application, a plurality of protrusions 171 are added to the side surface of the adjusting ring 17, and the protrusions 171 are uniformly distributed on the side surface of the adjusting ring 17 for the purpose of facilitating the adjustment, and it should be understood that the side surface added with the protrusions 171 is obviously more suitable for applying pressure to the adjusting ring 17 to enable the adjusting ring to rotate compared with the smooth side surface.

Further, in the moving direction of the push rod 15, the cross section of the protrusion 171 is arc-shaped, and the protrusion 171 with such a shape has two functions, namely, the first function is convenient to use and can be conveniently held during rotation; the second top is easy to manufacture because the curved protrusion 171 facilitates demolding.

Further, the axis of the protrusion 171 is parallel to the moving direction of the push rod 15.

Further, a gap 172 is provided between adjacent protrusions 171.

The arrangement of the axis and the gap 172 is convenient for operation, on one hand, the thrust during adjustment can directly act on the protrusion 171, so that labor is saved, and on the other hand, the contact area of the protrusion 171 and a human hand can be summed, so that the rotation is more convenient.

Referring to fig. 3, the cross-sectional shape of the plunger 15 is also understood to mean that the plunger 15 is formed of four strips, each strip having a scale, so that the user can rotate the adjustment ring 17 at any one position to set the injection amount.

Referring to fig. 4, the thread on the push rod 15 is a large-pitch rectangular thread, which facilitates injection molding.

As a possible implementation of the syringe provided by the application, the scale 16 on the push rod 15 is a digital scale, so that during the rotation, the user can quickly rotate the adjusting ring 17 to the proper position.

The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (6)

1. A syringe, comprising:

a body (11);

a cavity (12) arranged in the body (11), wherein one end of the cavity is an open end;

the connecting pipe (13) is arranged on the body (11) and is communicated with the cavity (12);

a piston (14) disposed in the cavity (12) and having a sidewall abutting against an inner wall of the cavity (12);

the push rod (15) is arranged on the piston (14) and is used for pushing the piston (14) to move in the cavity (12);

scales (16) arranged on the push rod (15); and

an adjusting ring (17) which is connected with the push rod (15) through threads and can move on the push rod (15);

wherein the adjusting ring (17) can be abutted on the body (11).

2. A syringe as claimed in claim 1, characterised in that the adjusting ring (17) has projections (171) on both sides.

3. A syringe as claimed in claim 2, characterised in that the cross-sectional shape of the projection (171) in the direction of movement of the push rod (15) is arcuate.

4. A syringe as claimed in claim 2 or 3, characterised in that the axis of the projection (171) is parallel to the direction of movement of the push rod (15).

5. A syringe as claimed in claim 4, characterised in that gaps (172) are provided between adjacent projections (171).

6. A syringe as claimed in claim 1, characterised in that the scale (16) is of the numeric type.

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