CN203556056U

CN203556056U - Multipurpose check valve

Info

Publication number: CN203556056U
Application number: CN201320656314.8U
Authority: CN
Inventors: 乔坤; 曾绮桥
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-10-23
Filing date: 2013-10-23
Publication date: 2014-04-23
Anticipated expiration: 2023-10-23

Abstract

The utility model provides a multipurpose check valve which comprises an inlet part, an outlet part and a communicating pipe located between the inlet part and the outlet part, wherein a valve body is arranged in the communicating pipe and comprises a base and an upright rod, the base is located near the inlet part and can seal an inlet, the upright rod is extended from the base, the area of the base is smaller than that of a cross section of the communicating pipe, a plurality of side vanes attached to the inner wall of the communicating pipe are arranged on the upright rod, and an annular stop ring is arranged in the position, near the outlet part, of the inner wall of the communicating pipe. The multipurpose check valve is simple and durable in structure and convenient to use, effectively prevents mutual pollution and can be generally used in connecting pipes with various pipe diameters, and the application range includes but is not limited to various occasions such as thoracocentesis and drainage, abdominocentesis and drainage and the like.

Description

Multiplex check valve

Technical field

This utility model relates to a kind of check valve, and particularly a kind of applicable injection or drain are used, and prevent the check valve of liquid countercurrent, belong to medical device technical field.

Background technology

The surgical drainage tube kind of application is a lot of clinically, can be used for urethral catheterization, wound, thoracic cavity, encephalocoele, abdominal cavity, gastrointestinal tract, biliary tract etc.Surgical drainage in order that by between tissue or the pus gathering in body cavity, blood, liquid be directed to externally, prevent postoperative infection and affect wound healing.

Use clinically at present make up a prescription or drainage system mostly is syringe, shortcoming is that such syringe is only furnished with a syringe needle, this has just caused plug place repeated multiple times intert of syringe needle at medicine bottle and infusion bottle, can cause unavoidably the damage of plug or the infection of puncture drainage tube, and also very inconvenient in the process of just operation.

Utility model content

This utility model is the problems referred to above that exist clinically at present, and a kind of check valve that is applicable to unidirectional puncture drainage is provided, and in carrying out the operation of drain or injection, without repeatedly changing drainage tube or syringe, has avoided pollution, and simple to operate.

Specifically, multiplex check valve described in the utility model, include oral area, export department and the communicating pipe between inlet portion and export department, in communicating pipe, be provided with valve body, wherein, valve body comprises the base of the sealed entrance that is positioned at nearly inlet portion, the vertical rod being extended out by base, and the area of base is less than the area of the cross section of communicating pipe, in vertical rod, have several flanks of being close to communicating pipe inwall, the nearly export department of communicating pipe inwall is provided with the back-up ring of ring-type.

Further, described valve base is provided with tapered prominent point towards the one side of inlet portion, has played and has guided liquid stream into surrounding, reduces the effect that eddy current forms.

Further, the number of described flank is more than 3.Flank plays the effect of guiding, guarantees that valve body moves axially within communicating pipe.

Further, described inlet portion and/or export department and detachable connection of communicating pipe.

Further, described inlet portion and/or export department are connected with communicating pipe by screw thread.

Further, described inlet portion and export department are tapered to far-end by the near-end of connection tube.Such design has facilitated the use of the connection tube of any caliber, and the connection tube of various calibers can be socketed in inlet portion and export department easily.

Further, the outer wall of described inlet portion and export department is provided with the barb of several annulars, can, better by connection tube clamping, be difficult for deviating from.

During use, liquid is entered by inlet portion, pushes valve body open, and flank arrives at back-up ring, and the space of liquid between valve body and communicating pipe inwall flowed out by export department; When liquid return, promote valve body and move to inlet portion, base blocks inlet portion, and liquid cannot adverse current.

Multiplex check valve described in the utility model, simple in structure durable, effectively avoided mutual pollution, and easy to use, can be common to the connection tube of various calibers, its range of application includes but not limited to the multiple occasions such as thoracic drainage and thoracentesis, abdominal puncture and drainage.

Accompanying drawing explanation

Fig. 1 is the three-dimensional structure diagram of an embodiment of this utility model;

Fig. 2 is the cutaway view (during forward flow) of Figure 1A-A ' line;

Fig. 3 is the cutaway view (during reverse flow) of Figure 1A-A ' line;

Fig. 4 is the cutaway view of Figure 1B-B ' line;

Fig. 5 is the axial cutaway view of another embodiment of this utility model;

Fig. 6 is the structure enlarged diagram of Local C in Fig. 5;

Wherein, 1 be inlet portion, 10 for barb, 2 for export department, 3 for communicating pipe, 40 for base, 41 for vertical rod, 42 for flank, 43 for back-up ring, 400 be prominent point.

The specific embodiment

Below in conjunction with accompanying drawing, technical scheme described in the utility model is described without limitation, object is to understand better described technology contents for the public.

Embodiment mono-

As Figure 1-4, multiplex check valve described in the utility model, include oral area 1, export department 3 and the communicating pipe 2 between inlet portion 1 and export department 3, in communicating pipe 2, be provided with valve body, wherein, valve body comprises the base 40 of the sealed entrance that is positioned at nearly inlet portion, the vertical rod 41 being extended out by base 40, the area of base 40 is less than the area of the cross section that is communicated with 2 pipes, further, valve base 40 is provided with tapered prominent sharp 400 towards the one side of inlet portion 1, played and guided liquid stream into surrounding, reduce the effect that eddy current forms, in vertical rod 41, there are several flanks 42 of being close to communicating pipes 2 inwall, the nearly export department of communicating pipes 2 inwall is provided with the back-up ring 43 of ring-type.Described valve base 40 is provided with tapered prominent sharp 400 towards the one side of inlet portion 1, played and guided liquid stream into surrounding, reduces the effect that eddy current forms; The number of described flank 42 is more than 3, and in the present embodiment, as shown in Figure 4, the number of flank 42 is 3, mainly plays the effect of guiding, guarantees that valve body moves axially within communicating pipe 1, reaches the folding of check valve; During use, as Fig. 3, liquid is entered by inlet portion 1, pushes valve body open, and flank 42 arrives at back-up ring 43, and the space of liquid between valve body and communicating pipes 2 inwalls flowed out by export department 3; When liquid return, as promoting valve body, moves to inlet portion 1 Fig. 2, and base 40 blocks inlet portion 1, and liquid cannot adverse current.

Embodiment bis-

As shown in Figure 5, the difference of the multiplex check valve of this embodiment and embodiment mono-is, in embodiment mono-, inlet portion 1 and export department 3 be structure as a whole communicating pipe 2, and in this embodiment, inlet portion 1 be threaded connection communicating pipe 2, be demountable structure.It should be understood that export department 3 can make Demountable equally, and in order to increase the fastness of connection tube, prevent from, inlet portion 1 and/or export department 3 are the tapered structure of far-end, and outer wall is provided with several barbs, play the effect of connection tube clamping.

Should be clear and definite be, above-mentioned content comprises accompanying drawing, it not all the restriction to described technical scheme, all any improvement to described technical scheme with identical or approximate principle, comprise the shape of each several part structure, size, material used, or functional similarity element be equal to replacement, all within the desired technical scheme of this utility model.

Claims

1. a multiplex check valve, include oral area, export department and the communicating pipe between inlet portion and export department, in communicating pipe, be provided with valve body, it is characterized in that: valve body comprises the base of the sealed entrance that is positioned at nearly inlet portion, the vertical rod being extended out by base, the area of base is less than the area of the cross section of communicating pipe, in vertical rod, have several flanks of being close to communicating pipe inwall, the nearly export department of communicating pipe inwall is provided with the back-up ring of ring-type.

2. multiplex check valve according to claim 1, is characterized in that: described valve base is provided with tapered prominent point towards the one side of inlet portion.

3. multiplex check valve according to claim 1 and 2, is characterized in that: the number of described flank is more than 3.

4. multiplex check valve according to claim 1 and 2, is characterized in that: described inlet portion and/or export department and detachable connection of communicating pipe.

5. multiplex check valve according to claim 4, is characterized in that: described inlet portion and/or export department are connected with communicating pipe by screw thread.

6. multiplex check valve according to claim 1 and 2, is characterized in that: described inlet portion and export department are tapered to far-end by the near-end of connection tube.

7. multiplex check valve according to claim 1 and 2, is characterized in that: the outer wall of described inlet portion and export department is provided with the barb of several annulars.