CN213853437U

CN213853437U - Medicine injection filter

Info

Publication number: CN213853437U
Application number: CN202022652514.9U
Authority: CN
Inventors: 何杰; 寿广臻; 郭佳伟; 蒋振元; 肖帅; 章玮林; 任凯军
Original assignee: Zhejiang Runqiang Medical Instruments Co ltd
Current assignee: Zhejiang Runqiang Medical Instruments Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-08-03
Anticipated expiration: 2030-11-17

Abstract

The utility model relates to a medicine injection filter, it includes first casing and second casing, first casing and second casing fixed connection, and form the confined space who is used for placing middle casing between the two, be equipped with first port on the first casing, be equipped with the second port on the second casing, be equipped with parallel arrangement's first passageway and second passageway on the middle casing, first passageway all is equipped with the check valve structure with the second passageway, and the liquid flow direction of first passageway sets up to flow to the second port by first port, and the liquid flow direction of second passageway sets up to flow to first port by the second port, and wherein the second passageway is equipped with the filter membrane piece, and the filter membrane piece setting is between check valve structure and second port. Through setting up switching on of two routes equidirectional, can directly get it filled through the filter when the syringe is got it filled, have the passageway of filter membrane through another way simultaneously and inject the filtration, reduced the step that need take off the filter when getting it filled, simplify the use flow, raise the efficiency.

Description

Medicine injection filter

Technical Field

The utility model relates to the field of medical technology, concretely relates to injection filter.

Background

As is known, most of the currently used injections are packaged in glass bottles, and when a rubber plug is pricked by a needle of a syringe or a glass bottle is cut by a grinding wheel to extract liquid medicine, bottle stopper scraps or glass powder can enter the injection. The conventional syringe does not have a filtering function, and when liquid medicine is extracted, the impurities are extracted into the syringe and directly injected into a patient, so that diseases such as phlebitis and the like are induced.

The existing filter mostly adopts a one-way filtering mode, so that the filter needs to be taken down when taking medicine, and after taking medicine, the filter needs to be additionally arranged to filter the liquid medicine, the operation is more complicated, and the operation of taking the filter down to take medicine is not beneficial to the sanitary preservation of the filter.

SUMMERY OF THE UTILITY MODEL

To the not enough of prior art existence, the utility model aims to provide an injection filter.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a medicine injection filter, its includes first casing and second casing, first casing and second casing fixed connection, and form the confined space who is used for placing middle casing between the two, be equipped with the first port with confined space intercommunication on the first casing, be equipped with the second port with confined space intercommunication on the second casing, be equipped with parallel arrangement's first passageway and second passageway on the middle casing, first passageway and second passageway all are equipped with the check valve structure, and the liquid flow direction of first passageway sets up to flow to the second port by first port, and the liquid flow direction of second passageway sets up to flow to first port by the second port, and wherein the second passageway is equipped with filtering diaphragm, filtering diaphragm sets up between check valve structure and second port.

The first channel and the one-way valve structure in the second channel are integrally formed.

The check valve is Z-shaped, and valve plates on two sides of the check valve are respectively arranged on different surfaces of the first channel and the second channel.

The check valve structure comprises a main body embedded in the first channel, the lower surface of the main body extends to one side to form a first valve plate, the upper surface of the main body extends to the other side to form a second valve plate, the first valve plate covers the first channel, the second valve plate covers the second channel, and the opening directions of the first valve plate and the second valve plate are opposite.

And a step is arranged in the second channel, and the filter membrane is fixedly arranged on the step.

The utility model has the advantages that: through setting up switching on of two routes equidirectional, can directly get it filled through the filter when the syringe is got it filled, have the passageway of filter membrane through another way simultaneously and inject the filtration, reduced the step that need take off the filter when getting it filled, simplify the use flow, raise the efficiency.

Drawings

Fig. 1 is a schematic cross-sectional view of the present invention.

Fig. 2 is a schematic sectional view of the utility model when taking medicine.

Fig. 3 is a schematic sectional view of the present invention during filtration.

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 efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

As shown in the figure, the utility model provides a medicine injection filter, which comprises a first shell and a second shell, wherein the first shell 5 is fixedly connected with the second shell 3, a sealing space for placing a middle shell 4 is formed between the first shell and the second shell, a first port 6 communicated with the sealing space is arranged on the first shell, a second port 7 communicated with the sealing space is arranged on the second shell, the second port can be connected with an injector through configuration, a first channel 42 and a second channel 41 which are arranged in parallel are arranged on the middle shell 4, the first channel and the second channel are provided with a one-way valve structure 2, the liquid flowing direction of the first channel is from the first port to the second port, the liquid flowing direction of the second channel is from the second port to the first port, the second channel 41 is provided with a filtering membrane 1, the filtering membrane is arranged between the one-way valve and the second port, first casing and second casing merge and form an overall structure, and inside forms totally enclosed confined space, sets up two independent spaces from top to bottom with whole confined space share between the two with middle casing, and two spaces communicate through first passageway and second passageway respectively, and wherein the accessible opposite direction of two passageways guarantees from top to bottom or by supreme two independent passageways that are each other noninterfere, mutually noninterfere promptly.

The check valve structure is a silica gel structure and has certain deformation capacity, the check valve structure is Z-shaped, and valve plates 22 on two sides of the check valve structure are respectively arranged on different surfaces of the first channel and the second channel. The valve plates extending from two sides are utilized to respectively cover the channel openings to realize sealing, the valve plates can be jacked open only when fluid in the channel impacts the valve plates at present, and the valve plates can be further pressed on the channel openings only by the impact of the fluid in the other direction to realize one-way conduction. Through setting up first passageway and being used for getting it filled, the second passageway is used for filtering, and both are independent each other, and mutually noninterfere has realized getting it filled and filtering dual function simultaneously in the filter.

The check valve structure comprises a main body 21 embedded in the first channel, the length of the main body is consistent with that of the channel, the tail ends of two valve plates extend towards the other side, the extending parts of one ends of the main bodies on two sides are matched with the valve plates to be clamped with the middle shell, the fixing firmness of the main bodies is guaranteed, meanwhile, the main bodies are preferably arranged in the first channel and tightly attached to the side wall of the first channel, the lower surface of the main bodies extends towards one side to form the first valve plate, the upper surface of the main bodies extends towards the other side to form the second valve plate, the first valve plate covers the first channel, the second valve plate covers the second channel, the opening directions of the two valve plates are opposite, and the two valve plates in different directions on the upper side and the lower side are designed to respectively form a one-way blocking effect with the corresponding channels, namely, the two channels are communicated in a one-way direction, and are blocked in the other direction, make this injection filter can be used for directly getting it filled and filter, can realize two functions simultaneously, need not to dismantle the step of getting it filled.

The filter membrane is fixedly arranged on the step, so that the fixing reliability of the filter membrane is guaranteed, the diameter of the filter membrane is larger than that of the second channel, and meanwhile, the filtering performance of the whole second channel can be guaranteed.

The examples should not be construed as limiting the present invention, but any modifications made based on the spirit of the present invention should be within the scope of the present invention.

Claims

1. A drug injection filter, comprising: it includes first casing and second casing, first casing and second casing fixed connection, and form the confined space who is used for placing middle casing between the two, be equipped with the first port with confined space intercommunication on the first casing, be equipped with the second port with confined space intercommunication on the second casing, be equipped with parallel arrangement's first passageway and second passageway on the middle casing, first passageway and second passageway all are equipped with the check valve structure, and the liquid flow direction of first passageway sets up to flow to the second port by first port, and the liquid flow direction of second passageway sets up to flow to first port by the second port, and wherein the second passageway is equipped with the filtration diaphragm, the filtration diaphragm sets up between check valve structure and second port.

2. The medication injection filter of claim 1 wherein: the first channel and the one-way valve structure in the second channel are integrally formed.

3. The medication injection filter of claim 2 wherein: the check valve is Z-shaped, and valve plates on two sides of the check valve are respectively arranged on different surfaces of the first channel and the second channel.

4. The medication injection filter of claim 2 or 3, wherein: the check valve structure comprises a main body embedded in the first channel, the lower surface of the main body extends to one side to form a first valve plate, the upper surface of the main body extends to the other side to form a second valve plate, the first valve plate covers the first channel, the second valve plate covers the second channel, and the opening directions of the first valve plate and the second valve plate are opposite.

5. The medication injection filter of claim 1 wherein: and a step is arranged in the second channel, and the filter membrane is fixedly arranged on the step.