CN218739746U

CN218739746U - Sealed filter and infusion set

Info

Publication number: CN218739746U
Application number: CN202121264681.4U
Authority: CN
Inventors: 王五星; 张洪文; 王博森
Original assignee: Shenzhen Antmed Co ltd
Current assignee: Shenzhen Antmed Co ltd
Priority date: 2021-06-04
Filing date: 2021-06-04
Publication date: 2023-03-28
Anticipated expiration: 2031-06-04

Abstract

The utility model discloses a sealed filter and infusion set. The sealed filter comprises a liquid outlet piece, a first shell, an elastic sealing sheet and a second shell, wherein the liquid outlet piece is provided with a liquid outlet channel and a jacking part; the first shell is connected with the liquid outlet piece, the first shell is concavely provided with a containing cavity, the first shell is provided with a liquid passing hole communicated with the containing cavity, and the abutting part is positioned in the containing cavity; the elastic sealing sheet is arranged in the containing cavity, the middle part of the elastic sealing sheet is abutted by the abutting part, and the periphery of the elastic sealing sheet is deformed so as to open or close the liquid passing hole; the second casing is connected with first casing, forms between first casing and the second casing and crosses the liquid chamber, crosses the intracavity and is equipped with the cassette, and the second casing is equipped with the inlet channel who even passes through the liquid chamber. The utility model discloses technical scheme has reduced the inside risk of being infected by the bacterium of filter, prevents the liquid reflux simultaneously, can also filter liquid.

Description

Sealed filter and infusion set

Technical Field

The utility model relates to a medical equipment technical field, in particular to sealed filter and infusion set.

Background

The filter is one of medical supplies commonly used in the medical field, and the filter in the related art can reduce particulate pollution in the processes of infusion and intramuscular injection dispensing. However, during the use of the filter, the outlet end of the filter is often exposed to the external environment, so that bacteria may enter the filter through the outlet end of the filter, so that the inside of the filter is at risk of being infected by the bacteria. In the related art, the invasion of bacteria from the liquid outlet end of the filter cannot be avoided. In addition, during the filtration process, the liquid backflow is prevented when the patient is subjected to infusion treatment or drainage.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sealed filter and infusion set aims at reducing the inside risk by bacterial infection of filter, prevents liquid reflux simultaneously, can also filter liquid.

In order to achieve the above object, the present invention provides a sealed filter, which includes a liquid outlet member, a first housing, an elastic sealing sheet, and a second housing, wherein the liquid outlet member has a liquid outlet channel, and the liquid outlet member further has a top connection portion; the first shell is connected with the liquid outlet piece, a containing cavity is concavely arranged on the first shell, a liquid passing hole communicated with the containing cavity is formed in the first shell, and the jacking part is located in the containing cavity; the elastic sealing sheet is arranged in the containing cavity, the middle part of the elastic sealing sheet is abutted by the abutting part, and the periphery of the elastic sealing sheet is deformed so as to open or close the liquid passing hole; the second casing with first casing is connected, first casing with form the liquid chamber between the second casing, cross the intracavity and be equipped with the cassette, the second casing is equipped with the intercommunication the inlet channel in liquid chamber.

Optionally, the liquid outlet piece comprises a male connector; and the liquid outlet channel is arranged on the connector and is communicated with the male connector, the connector is connected with the male connector, and the jacking part is arranged at one end of the connector, which deviates from the male connector.

Optionally, one side of the abutting part, which faces away from the elastic sealing sheet, is provided with a liquid passing groove, and the liquid passing groove is communicated with the liquid outlet channel.

Optionally, the first housing includes a connecting cylinder, the connecting cylinder includes a connecting section and a receiving section, the receiving cavity is formed in the receiving section, and the connecting body is inserted into the connecting section; and the first end cover is arranged at one end, deviating from the connecting section, of the connecting cylinder and is connected with the second shell to form the liquid passing cavity.

Optionally, the accommodating section is provided with a plurality of limiting columns, the plurality of limiting columns are distributed along the inner wall surface of the accommodating section in a surrounding manner, and the connecting body is limited and abutted to the end surface of the limiting column, which is deviated from the liquid passing hole; and/or the top connection part is arranged in a triangular plate shape, and the sharp corner of the triangular plate shape is abutted against the middle part of the elastic sealing sheet.

Optionally, the first end cover comprises a first plate-shaped body, and the first plate-shaped body is arranged at one end of the connecting cylinder, which is away from the connecting section; and the coaming is arranged on the surface of the first plate-shaped main body, which is deviated from the connecting cylinder, the coaming and the first plate-shaped main body are encircled to form a first end cover, and the coaming is connected with the second shell to form the liquid passing cavity.

Optionally, a first guide groove is concavely arranged on the surface of the first plate-shaped main body, which is away from the connecting cylinder, and the first guide groove is distributed in a surrounding manner and is communicated with the liquid passing hole; and/or a first liquid storage groove is concavely arranged in the center of the first plate-shaped main body and is communicated with the liquid passing hole; and/or the liquid passing hole is arranged in the central area of the first plate-shaped body.

Optionally, the second casing includes a liquid inlet pipe, one end of the liquid inlet pipe is provided with a female joint, and the liquid inlet pipe is provided with a liquid inlet channel; and the second end cover is arranged at one end of the mother joint, which is deviated from the liquid inlet pipe, and the surface of the second end cover, which is deviated from the liquid inlet pipe, is concavely provided with a second diversion trench, which is distributed in a surrounding way. And a second liquid storage groove is concavely arranged in the middle area of the second end cover, and the liquid inlet channel is communicated with the second liquid storage groove.

Optionally, the first end cover is detachably connected with the second end cover in an inserting manner; and/or the liquid passing holes are provided with reinforcing ribs, and the reinforcing ribs are arranged in the centers of the liquid passing holes in a crossed mode.

The utility model also provides an infusion device, which comprises the sealed filter and a liquid inlet pipeline, wherein the liquid inlet pipeline is connected with the female joint and is communicated with the liquid inlet channel; and the liquid outlet pipeline is connected with the male connector and is communicated with the liquid outlet channel.

The utility model discloses among the technical scheme, play liquid spare through sealed filter sets up apical grafting portion, and sealed filter's first casing is concave establishes and is held the chamber, and sealed filter is equipped with the liquid hole that crosses that the chamber was held in the intercommunication, holds the intracavity and sets up the elasticity gasket, and the middle part of elasticity gasket is connect by apical grafting portion apical grafting to alright open or close the liquid hole, thereby block sealed filter and outside or the intercommunication, and then realize that can't prevent the bacterium among the prior art from the technical scheme that the play liquid end of filter invaded. Simultaneously, at the inlet liquor in-process, outside liquid flows into in the second casing from inlet channel, flows to the liquid hole of crossing of first casing through crossing the liquid chamber again, because of set up the cassette in crossing the liquid chamber, filters liquid through the cassette to make liquid become filtrating, and then realize the filter effect. The filtrating flows into and holds the intracavity via crossing the liquid hole, flows out by the play liquid channel that goes out the liquid piece again, because of the intracavity sets up the elasticity gasket, and the middle part of elasticity gasket is connect by the apical grafting portion top of feed liquor piece, through this elasticity gasket one-way conduction liquid to prevent the liquid backward flow. Therefore, the sealed filter of this application can effectively avoid inside the bacterial infection filter for the inside risk of being infected by the bacterium of filter can be reduced, can prevent liquid backward flow simultaneously, can also filter liquid.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of a sealed filter according to the present invention;

FIG. 2 is a schematic diagram of an exploded view of one embodiment of the encapsulated filter of FIG. 1;

FIG. 3 is a front view of one embodiment of the sealed filter of FIG. 1;

FIG. 4 is a schematic cross-sectional front view of one embodiment of the sealed filter of FIG. 1;

FIG. 5 is a schematic cross-sectional view of an exploded configuration of an embodiment of the encapsulated filter of FIG. 1;

FIG. 6 is a schematic view of a portion of one embodiment of the sealed filter of FIG. 5 taken along direction A;

FIG. 7 is a schematic view of a portion of the embodiment of the sealed filter of FIG. 5 along direction B.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1000	Sealed filter	2212	First liquid storage tank
100	Liquid outlet piece	2213	First guideLaunder
				110	Male joint	2214	Locating slot
120	Connecting body	2215	Reinforcing rib
				121	Liquid outlet channel	222	Boarding
122	Butting part	300	Elastic sealing sheet
				1221	Liquid passing groove	400	Second shell
200	First shell	410	Second end cap
				210	Connecting cylinder	411	Second liquid storage tank
211	Connecting segment	412	Second diversion trench
				212	Accommodating section	413	Locating block
212a	Containing chamber	420	Liquid inlet pipe
				2121	Limiting column	421	Liquid inlet channel
220	First end cap	422	Female joint
				221	A first plate-like body	500	Filter disc
2211	Liquid passing hole

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

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 up, down, left, right, front, back \8230;) in the embodiments 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 attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

Furthermore, the descriptions in the present application related to "first", "second", etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or to imply that the number of technical features indicated are implicitly being 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, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.

The utility model provides a sealed filter aims at preventing the emergence of filter backward flow to and reduce the inside risk of being infected by the bacterium of filter.

The following will explain the specific structure of the sealed filter of the present invention.

As shown in fig. 1 to fig. 7, in an embodiment of the present application, the sealing filter 1000 includes a liquid outlet member 100, a first housing 200, an elastic sealing sheet 300 and a second housing 400, the liquid outlet member 100 is provided with a liquid outlet channel 121, and the liquid outlet member 100 is further provided with a butting portion 122. The first housing 200 is connected to the liquid outlet member 100, the first housing 200 is concavely provided with a cavity 212a, the first housing 200 is provided with a liquid through hole 2211 communicated with the cavity 212a, and the abutting portion 122 is located in the cavity 212a. The elastic sealing sheet 300 is placed in the cavity 212a, the middle part of the elastic sealing sheet 300 is abutted by the abutting part 122, and the periphery of the elastic sealing sheet 300 is deformed to open or close the liquid passing hole 2211. The second casing 400 is connected with the first casing 200, a liquid passing cavity is formed between the first casing 200 and the second casing 400, a filter sheet 500 is arranged in the liquid passing cavity, and the second casing 400 is provided with a liquid inlet channel 421 connected with the liquid passing cavity.

The assembly of the first housing 200, the second housing 400, and the filter 500 may form a filter member to filter a liquid. The assembly of the liquid outlet member 100, the elastic sealing sheet 300 and the first housing 200 may form a sealing member, so that it is possible to prevent backflow and to seal the filtering member. Go out liquid piece 100 butt elasticity sealing washer 300, make elasticity sealing washer 300 shutoff liquid hole 2211 to can make and cross liquid hole 2211 normal close formula and close, thereby can make air or liquid blockked by elasticity sealing washer 300, and then make the bacterium in air or the liquid blockked, thereby make the inside of sealed filter 1000 be in aseptic environment, and then can effectively avoid inside bacterial infection sealed filter 1000, make the inside risk of being infected by the bacterium of sealed filter 1000 reduce.

Further, in the liquid inlet process, the external liquid flows into the second housing 400 from the liquid inlet channel 421, and then flows into the liquid passing hole 2211 of the first housing 200 via the liquid passing cavity, and the liquid is filtered by the filter sheet 500 because the filter sheet 500 is arranged in the liquid passing cavity, so that the liquid becomes the filtrate, and the filtering effect is further realized. It is understood that various embodiments may be used to filter liquid through the filter 500, such as a filter screen, filter cotton, filter paper, filter cartridge, etc.

Further, liquid flows in from inlet channel 421, filters through the filter part, gets into and crosses liquid hole 2211, accumulates hydraulic pressure for elasticity sealing gasket 300 can be deformed, can make and cross liquid hole 2211 and open, and then can make and cross liquid hole 2211 and hold chamber 212a and switch on, promptly, makes liquid one-way switch on, thereby can prevent the liquid backward flow. The elastic sealing plate 300 is in one-way conduction, and in other embodiments, various implementations can be adopted, such as a one-way valve, e.g., a control valve, a ball valve, a diaphragm valve, etc.

It can be understood that the sealing member formed by assembling the liquid outlet member 100, the elastic sealing piece 300 and the first housing 200 not only prevents the liquid from flowing backward, but also prevents bacteria from infecting the inside of the sealing filter 1000. Of course, in other embodiments, the liquid outlet member 100, the sealing plate and the spring are assembled to form a sealing member, so as to control the closing and opening of the liquid passing hole 2211, thereby preventing the backflow of the liquid and preventing bacteria from infecting the inside of the sealing filter 1000.

As shown in fig. 4 and fig. 5, in an embodiment of the present application, the liquid outlet member 100 includes a male connector 110 and a connector 120, the liquid outlet channel 121 is disposed on the connector 120 and communicates with the male connector 110, the connector 120 and the male connector 110, and the abutting portion 122 is disposed on an end of the connector 120 away from the male connector 110.

One end of the liquid outlet member 100 is provided with a male connector 110, and the other end is provided with a connector 120. The outer surface of the male connector 110 may be provided with anti-slip ribs which are circumferentially arranged on the circumferential surface of the male connector 110 to facilitate the rotational mounting and dismounting. The male connector 110 may be a male luer connector to mate with a female luer connector. It will be appreciated that the male luer is used to accommodate the connection requirements of most devices and that the connection is reliable. By using a male luer connection, a variety of connection forms may be employed, such as a male bayonet connection, a male flared connection, a male snap-fit connection, a male quick connection, and the like.

As shown in fig. 1 to 5, in an embodiment of the present application, a liquid passing groove 1221 is disposed on a side of the abutting portion 122 away from the elastic sealing sheet 300, and the liquid passing groove 1221 is communicated with the liquid outlet channel 121.

The liquid inlet channel 421 is disposed on the connecting body 120 and communicates with the cavity 212a. The end of the connector 120 facing away from the male connector 110 is provided with a top connection portion 122, and the top connection portion 122 is located in the middle region of the liquid inlet channel 421. The surface of the abutting portion 122 facing the male connector 110 is provided with a liquid passing groove 1221, so that the resistance to the flow of the liquid is effectively reduced, thereby making the flow of the liquid smooth.

It can be understood that the abutting portion 122 is provided with the liquid passing groove 1221 to reduce the liquid flowing resistance, so that the liquid can smoothly flow in the liquid inlet channel 421. Of course, the present invention is not limited thereto, and other reasonable and effective ways of reducing the liquid resistance may be adopted in other embodiments, for example: a tapered hole is used as the liquid inlet passage 421.

As shown in fig. 4 and 5, in an embodiment of the present application, the first housing 200 includes a connector barrel 210 and a first end cap 220. The connector barrel 210 includes a connection section 211 and a receiving section 212, a receiving cavity 212a is formed in the receiving section 212, and the connection body 120 is inserted into the connection section 211. And the first end cover 220 is arranged at one end, away from the connecting section 211, of the connecting cylinder 210, and is connected with the second shell 400 to form a liquid passing cavity.

The cavity 212a is disposed in the receiving section 212 of the connecting cylinder 210 to receive the elastic sealing sheet 300. The first end cap 220 is disposed at an end of the connecting cylinder 210 facing away from the connecting groove to connect the second housing 400. The connecting cylinder 210 is provided with a receiving section 212, so that the connecting body 120 is inserted into the receiving section 212, and the connecting cylinder 210 is connected with the connecting body 120, and further the liquid outlet member 100 is connected with the first housing 200.

It can be understood that the connecting body 120 and the receiving section 212 are connected in a plugging manner, which not only facilitates installation, but also ensures reliable connection. Of course, the present invention is not limited thereto, and other reasonable and reliable connection manners may be adopted in other embodiments, such as: the fixed connection is realized by screw connection, buckle connection, ultrasonic welding, gluing, bonding and other modes.

Further, as shown in fig. 4 and 5, in an embodiment of the present application, the receiving section 212 is provided with a plurality of limiting columns 2121, the plurality of limiting columns 2121 are distributed around the inner wall surface of the receiving section 212, and the connecting body 120 is limited and abutted on an end surface of the limiting column 2121 departing from the liquid through hole 2211.

The cavity wall of the containing cavity 212a can be provided with a plurality of limiting columns 2121, and the plurality of limiting columns 2121 are distributed along the cavity wall of the containing cavity 212a in a surrounding manner, so that the elastic sealing sheet 300 is prevented from being directly contacted with the cavity wall of the containing cavity 212a, the elastic sealing sheet 300 is effectively prevented from being clamped, and the liquid passing hole 2211 is easily opened by the elastic sealing sheet 300. Meanwhile, the limiting post 2121 can limit the connecting body 120, so that the connecting body 120 is limited and abutted against the end surface of the limiting post 2121 deviating from the liquid passing hole 2211, thereby facilitating the assembly of the sealing filter 1000. Through setting up a plurality of spacing posts 2121 for the overall structure of first casing 200 is simple, and the assembly connection is more simple and convenient.

As shown in fig. 1 to 5, in an embodiment of the present application, the top connection portion 122 is a triangular plate, and a sharp corner of the triangular plate abuts against a middle portion of the elastic sealing sheet 300.

The triangular plate shape of the liquid outlet member 100 abuts against the center of the elastic sealing sheet 300 to apply an axial force to the elastic sealing sheet 300, so that the elastic sealing sheet 300 blocks the liquid passing hole 2211. Of course, the present invention is not limited thereto, and in other embodiments, other reasonable and effective manners may be adopted to apply the axial force to the elastic sealing piece 300, for example, a spring is adopted to abut against the elastic sealing piece 300.

As shown in fig. 2 to 5, in an embodiment of the present application, the first end cap 220 includes a first plate-shaped body 221 and a shroud 222. The first plate-like body 221 is provided at an end of the connector barrel 210 facing away from the connection section 211. The surrounding plate 222 is disposed on a surface of the first plate-shaped body 221 away from the connecting cylinder 210, the surrounding plate 222 and the first plate-shaped body 221 surround to form the first end cap 220, and the surrounding plate 222 is connected with the second shell 400 to form the liquid passing cavity.

The first end cap 220 is formed by enclosing the enclosing plate 222 and the first plate-shaped main body 221, and the enclosing plate 222 is arranged to connect the first end cap 220 and the second end cap 410, so that the whole assembly of the sealed filter 1000 is facilitated.

As shown in fig. 2 to 6, in an embodiment of the present application, a surface of the first plate-shaped body 221 facing away from the connecting cylinder 210 is concavely provided with first guiding grooves 2213, the first guiding grooves 2213 are distributed in a surrounding manner, and the first guiding grooves 2213 are communicated with the liquid through holes 2211.

The first plate-shaped main body 221 is concavely provided with first guiding grooves 2213, and the first guiding grooves 2213 are distributed in a surrounding manner to form guiding flow channels, so that the filtering area is increased. By providing the first flow-guiding groove 2213, the filtering efficiency of the sealed filter 1000 is improved.

As shown in fig. 2 to 6, in an embodiment of the present invention, a first liquid storage groove 2212 is recessed in the center of the first plate-shaped main body 221, and the first liquid storage groove 2212 is communicated with the liquid through hole 2211.

The first plate-shaped main body 221 is concavely provided with a first liquid storage groove 2212 in the middle region, so that the liquid in the first flow guide groove 2213 is effectively gathered in the first liquid storage groove 2212, and the liquid is buffered. By providing the first liquid storage tank 2212, the liquid flow is more smoothly stabilized.

Further, a liquid passing hole 2211 is provided in the central region of the first plate-like body 221. Through the liquid passing hole 2211 arranged in the central area, the accommodating cavity 212a and the first liquid storage groove 2212 are conducted more conveniently, and the conduction path is shortened.

As shown in fig. 2 to 7, in an embodiment of the present application, the second housing 400 includes a liquid inlet pipe 420 and a second end cap 410, one end of the liquid inlet pipe 420 is provided with a female joint 422, and the liquid inlet pipe 420 is provided with a liquid inlet passage 421. The second end cap 410 is disposed at an end of the liquid inlet pipe 420 away from the female joint 422, a second guiding groove 412 is concavely disposed on a surface of the second end cap 410 away from the liquid inlet pipe 420, and the second guiding grooves 412 are circumferentially distributed. The second end cap 410 is concavely provided with a second liquid storage slot 411 in the middle area, and the liquid inlet channel 421 is communicated with the second liquid storage slot 411.

A second guide groove 412 is concavely formed through the second end cap 410 of the second housing 400, and the second guide groove 412 is circumferentially distributed to form a guide flow passage, so that the filtering area is increased. The second end cap 410 is concavely provided with a second liquid storage slot 411 at the center, so that the liquid in the first liquid storage slot 2212 can be effectively diffused to the second guiding slot 412, thereby improving the filtering efficiency.

As shown in fig. 1 to 5, in an embodiment of the present application, the first end cap 220 is detachably connected to the second end cap 410.

The first end cap 220 and the second end cap 410 are detachably connected in a plugging manner, so that the first end cap 220 and the second end cap 410 are reliably connected, and the tightness of the connection between the first end cap 220 and the second end cap 410 are improved.

In addition, it should be noted that the first end cap 220 and the second end cap 410 may be connected by bonding, ultrasonic welding, or other reasonable and effective connection methods to improve the tightness or the sealing property.

As shown in fig. 5 and 6, in an embodiment of the present application, the liquid through hole 2211 is provided with a reinforcing rib 2215, and the reinforcing rib 2215 is crosswise arranged in the center of the liquid through hole 2211.

The liquid passing hole 2211 is provided with a reinforcing rib 2215 at one end facing the top connection part 122, and the reinforcing rib 2215 is crosswise arranged in the middle area of the liquid passing hole 2211, so that the top connection part 122 is thrust, and the strength of the liquid passing hole 2211 is enhanced. The reinforcing ribs 2215 divide the liquid passing holes 2211 into four small holes. The reinforcing ribs 2215 are arranged, so that the structure of the first shell 200 is simple and reliable.

In addition, it should be noted that the number of the reinforcing ribs 2215 may be one, multiple, or other reasonable and effective thrust means, such as a thrust plate.

It can be understood that the area of the end of the elastic sealing piece 300 facing the liquid passing hole 2211 is larger than the sum of the areas of the four small holes facing the end of the elastic sealing piece 300. Through the above design, when there is no liquid, no liquid flow or liquid backflow occurs in the sealing filter 1000, the elastic sealing sheet 300 tightly blocks the liquid through hole 2211 by the thrust of the abutting portion 122, and when the liquid flows in the forward direction, i.e., from the liquid inlet pipe 420 to the liquid outlet member 100, the liquid can smoothly enter the cavity 212a through the four small holes.

In addition, the number of the small holes formed by dividing the reinforcing rib 2215 may be one, plural, or other appropriate and effective means for reducing the liquid flow resistance.

Further, when the liquid flows in the forward direction, i.e., from the liquid inlet tube 420 to the liquid outlet member 100, pressure is accumulated in the liquid outlet hole 2211. After reaching a certain pressure, the liquid flows into the four small holes, and applies pressure to the elastic sealing sheet 300, so that the elastic sealing sheet 300 deforms, and the liquid can smoothly enter the sealing member accommodating cavity 212a through the four small holes. When there is not liquid, liquid does not flow or liquid takes place the backward flow in sealed filter 1000, elasticity sealing fin 300 reconversion, namely, elasticity sealing fin 300 does not take place deformation, and four apertures are closely blockked up to elasticity sealing fin 300 to effectively block the intercommunication of crossing liquid hole 2211 and sealing member appearance chamber 212a, thereby realize sealed filter 1000 and outside isolated.

Further, a first flow guide groove 2213 is concavely arranged on one surface of the first end cover 220 facing the second end cover 410, the first flow guide groove 2213 is discontinuously arranged around the center, and a positioning groove 2214 is arranged on the periphery of the first flow guide groove 2213, so that the first end cover 220 and the second end cover 410 are accurately paired, liquid flows along the first flow guide groove 2213, the filtering area is increased, and the filtering efficiency is improved. The second guide grooves 412 of the second end cap 410 face the first end cap 220, so that the liquid flows along the second guide grooves 412, thereby increasing the filtering area and improving the filtering efficiency. The second guiding groove 412 has a positioning block 413 disposed on the periphery thereof to enable the first end cap 220 and the second end cap 410 to be accurately matched.

Further, the positioning slot 2214 of the first end cap 220 is inserted into the positioning block 413 of the second end cap 410. The filter 500 is tightly clamped between the first flow-guiding slot 2213 and the second flow-guiding slot 412. The liquid is filtered in the first and

second guide grooves

2213 and 412, so that the liquid filtering area is increased, thereby improving the filtering efficiency. By providing the positioning groove 2214 and the positioning block 413, the assembly of the first housing 200 and the second housing 400 may be facilitated.

The utility model also provides an infusion set, this infusion set include into the liquid pipeline, go out liquid pipeline and sealed filter 1000, and above-mentioned embodiment is referred to this sealed filter 1000's concrete structure, because this infusion set has adopted all technical scheme of above-mentioned all embodiments, consequently has all beneficial effects that the technical scheme of above-mentioned embodiment brought at least, and the repeated description is no longer repeated here one by one. Wherein, the liquid inlet pipeline is connected to the female joint 422 and is communicated with the liquid inlet channel 421. The outlet pipe is connected to the male connector 110 and is communicated with the outlet channel 121.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A sealed filter, comprising:

the liquid outlet piece is provided with a liquid outlet channel and a jacking part;

the first shell is connected with the liquid outlet piece, a containing cavity is concavely arranged on the first shell, a liquid passing hole communicated with the containing cavity is formed in the first shell, and the abutting part is located in the containing cavity;

the elastic sealing sheet is arranged in the containing cavity, the middle part of the elastic sealing sheet is abutted by the abutting part, and the periphery of the elastic sealing sheet is deformed so as to open or close the liquid passing hole; and

the second casing, the second casing with first casing is connected, first casing with form the sap cavity between the second casing, cross the intracavity and be equipped with the cassette, the second casing is equipped with the intercommunication the inlet channel in sap cavity.

2. The sealing filter of claim 1, wherein said tapping member comprises:

a male connector; and

the connector, the drain channel is located the connector, and communicates the male joint, the connector with the male joint, the apical grafting portion is located the connector deviates from the one end of male joint.

3. The seal filter of claim 2, wherein a liquid passing groove is formed on a side of the abutting portion facing away from the elastic sealing sheet, and the liquid passing groove is communicated with the liquid outlet channel.

4. The sealed filter of claim 3, wherein the first housing comprises:

the connecting cylinder comprises a connecting section and an accommodating section, the accommodating cavity is formed in the accommodating section, and the connecting body is inserted into the connecting section; and

the first end cover is arranged at one end, deviating from the connecting section, of the connecting cylinder and is connected with the second shell to form the liquid passing cavity.

5. The filter seal of claim 4, wherein the receiving section is provided with a plurality of limiting columns, the plurality of limiting columns are distributed around the inner wall surface of the receiving section, and the connecting body is in limiting abutment with the end surface of the limiting column, which is far away from the liquid passing hole;

and/or the top connection part is arranged in a triangular plate shape, and the sharp corner of the triangular plate shape is abutted against the middle part of the elastic sealing sheet.

6. The sealed filter of claim 4, wherein the first end cap includes:

the first plate-shaped main body is arranged at one end, away from the connecting section, of the connecting cylinder; and

the coaming is arranged on the surface, departing from the connecting cylinder, of the first plate-shaped main body, the coaming and the first plate-shaped main body are encircled to form a first end cover, and the coaming is connected with the second shell to form the liquid passing cavity.

7. The seal filter according to claim 6, wherein the surface of said first plate-like body facing away from said connecting cylinder is concavely provided with first guiding grooves, said first guiding grooves are distributed in a surrounding manner, and said first guiding grooves are communicated with said liquid through hole;

and/or the liquid passing hole is arranged in the central area of the first plate-shaped body.

8. The sealed filter of claim 7, wherein the second housing comprises:

the liquid inlet pipe is provided with a female joint at one end and a liquid inlet channel; and

the second end cover is arranged at one end, away from the female joint, of the liquid inlet pipe, and second guide grooves are concavely arranged on the surface, away from the liquid inlet pipe, of the second end cover and are distributed in a surrounding manner; and a second liquid storage groove is concavely arranged in the middle area of the second end cover, and the liquid inlet channel is communicated with the second liquid storage groove.

9. The seal filter of claim 8 wherein said first end cap is removably connected to said second end cap by a bayonet connection;

and/or the liquid passing holes are provided with reinforcing ribs, and the reinforcing ribs are arranged in the centers of the liquid passing holes in a crossed mode.

10. An infusion device comprising a sealing filter as claimed in any one of claims 1 to 9, the infusion device further comprising:

the liquid inlet pipeline is connected to the second shell and communicated with the liquid inlet channel; and

and the liquid outlet pipeline is connected to the liquid outlet piece and communicated with the liquid outlet channel.