CN202052120U

CN202052120U - Needle-free type connector for connecting syringe with catheter

Info

Publication number: CN202052120U
Application number: CN2011200691124U
Authority: CN
Inventors: 锺仁
Original assignee: Pacific Hospital Supply Co Ltd
Current assignee: Pacific Hospital Supply Co Ltd
Priority date: 2011-03-16
Filing date: 2011-03-16
Publication date: 2011-11-30
Anticipated expiration: 2021-03-16

Abstract

The utility model relates to a needle-free type connector for connecting syringe with a catheter, which comprises a seat, an elastic valve and a hollow sleeve. The seat comprises a partition board and a fencing plate, a first pipe fitting and a second pipe fitting are respectively formed on two surfaces of the partition board, the elastic valve is sleeved on the seat and comprises a valve portion and a flexible component, a slit is arranged on the valve portion above a pipe opening of the first pipe fitting, the hollow sleeve is sleeved outside the elastic valve, is in assembly connection with the seat and is provided with an opening and a holding cavity, the syringe can be inserted into the opening, and the holding cavity is communicated with the opening. The needle-free type connector for connecting the syringe with the catheter is only provided with the seat, the elastic valve and the hollow sleeve, accordingly is simple in structure and reduces cost. The seat, the elastic valve and the hollow sleeve can be molded, are easy to be assembled, and accordingly greatly shorten manufacturing and assembling time. Outlines of outer portions of a conical section and an abutting section of the elastic valve are equal to an outline of the inner wall of the hollow sleeve, and accordingly the airtight leakage prevention effect of the needle-free type connector is quite excellent.

Description

What be used to connect injection tube and conduit exempts from the pin type adapter

Technical field

This utility model relates to a kind of adapter, refer to especially a kind of be used to connect injection tube and conduit exempt from the pin type adapter.

Background technology

Utilize traditionally syringe cylinder with the medicinal liquid in the syringe inject a conduit or the some drop bottle in so that make this medicinal liquid can by this conduit maybe a tube for transfusion of this drop bottle flow in patient's body.

Yet traditional syringe cylinder is provided with a syringe needle, and this syringe needle just must abandon problems such as to avoid antibacterial or courses of infection after using once, so cause the waste of syringe needle.Therefore, developed different styles exempt from the pin type adapter, overcoming abandoning and the infection risk problem of syringe needle, thereby save the making and the purchase cost of syringe needle, and meet the environmental protection notion.

In addition, many on the market exempting from the pin type adapter, the complex structure that has and costing an arm and a leg, what have then is that airtight leak preventing effect is bad, and therefore further improved necessity arranged really.

The utility model content

In view of this, the purpose of this utility model be to provide a kind of be used to connect injection tube and conduit exempt from the pin type adapter, it is simple in structure, with low cost, and has good airtight leak preventing effect simultaneously.

In order to reach above-mentioned purpose, this utility model provide a kind of be used to connect injection tube and conduit exempt from the pin type adapter, the described pin type adapter of exempting from comprises:

One pedestal, the coaming plate that it comprises a dividing plate and connects this dividing plate periphery, a surface forming of dividing plate has first pipe fitting, and another surface forming of dividing plate has and communicates with first pipe fitting and second pipe fitting of connecting duct;

One feather valve, it is arranged on the pedestal, and described feather valve comprises a valve portion and connects this valve portion and be placed on a flexible component of first pipe fitting, and valve portion offers a slit above the mouth of pipe of corresponding first pipe fitting;

One hollow sleeve, its be placed on feather valve outer and with the mutual winding of pedestal, described hollow sleeve has an opening that inserts for injection tube and a cavity volume that communicates with opening;

Wherein, when described injection tube inserts opening and pushes feather valve, flexible pipe deflection deformation and valve portion in cavity volume support the upper limb that is affixed on first pipe fitting, so that slit enlarges and communicate with the mouth of pipe of first pipe fitting, the flow of liquid in the injection tube is crossed first pipe fitting and second pipe fitting and entered in the conduit.

As preferred version, wherein said first formation of tubes is in the upper surface of dividing plate and extension up, second pipe fitting then forms in the lower surface of dividing plate and extends down, and the external diameter of first pipe fitting is less than the external diameter of second pipe fitting, and the external diameter of second pipe fitting is corresponding to the internal diameter of described conduit.

As preferred version, the outer surface of wherein said flexible component forms a taper section, connect one of taper section supports and pastes section, connects and support deflection section of pasting section and a supporting section that connects the deflection section.

As preferred version, the local configuration correspondence of the inwall of wherein said hollow sleeve compresses the taper section and supports and paste section.

As preferred version, the wherein said subsides section of supporting is provided with a plurality of annular grooves.

As preferred version, the external diameter of wherein said deflection section is less than the internal diameter of hollow sleeve.

As preferred version, the profile of wherein said supporting section equals the profile of dividing plate.

As preferred version, the edge of wherein said supporting section forms a groove, the root edge of hollow sleeve embed in the groove and with the mutual build-in of pedestal.

Compared to prior art, the utlity model has following beneficial effect:

1) according to this utility model, only have pedestal, feather valve and three assemblies of hollow sleeve owing to exempt from the pin type adapter, so it is simple in structure, cost reduces;

2) according to this utility model, these three assemblies of pedestal, feather valve and hollow sleeve all can be molded and shaped and be easy to assembly, make and assembling man-hour so significantly shorten;

3) according to this utility model, because the taper section of feather valve and the inner surface contour that equals hollow sleeve to the exterior contour that pastes section, so in injection tube inserts the opening of hollow sleeve and when pushing feather valve, the taper section still produces good sealing with the inwall of hollow sleeve and supports and paste effect with support pasting section, so the suitable excellence of airtight leak preventing effect of the present utility model.

Description of drawings

Fig. 1 is an exploded perspective view of the present utility model;

Fig. 2 is this utility model exploded perspective view from another viewpoint;

Fig. 3 is a combination stereogram of the present utility model;

Fig. 4 is a combination section of the present utility model;

Fig. 5 is the operation constructed profile that a this utility model and an injection tube cooperatively interact.

[primary clustering symbol description]

Exempt from pin type adapter-1; Pedestal-10; Injection tube-100; Dividing plate-11; Coaming plate-12; First pipe fitting-13; The mouth of pipe-131; Second pipe fitting-14;

Feather valve-20; Conduit-200; Valve portion-21; Slit-211; Flexible component-22; Taper section-221; Support and paste section-222; Annular groove-2221; Deflection section-223; Supporting section-224; Groove-2241;

Hollow sleeve-30; Opening-31; Cavity volume-32.

The specific embodiment

Relevant detailed description of the present utility model and technology contents, it is as follows to see also following detailed description and description of drawings, and accompanying drawing and detailed description are as illustrative purposes only, are not to be used to limit this utility model.

Please refer to Fig. 1 to Fig. 5, this utility model provide a kind of be used to connect injection tube 100 and conduit 200 exempt from pin type adapter 1, exempt from pin type adapter 1 and comprise: a pedestal 10, a feather valve 20 and a hollow sleeve 30.

Pedestal 10 is that rigid plastics is molded and shaped, the coaming plate 12 that it comprises a dividing plate 11 and connects dividing plate 11 peripheries, one surface forming of dividing plate 11 has one first pipe fitting 13, and another surface forming of dividing plate 11 has one second pipe fitting 14 that communicates with first pipe fitting 11 and be connected described conduit 200; As can be seen from Figure 1, dividing plate 11 is circular, and coaming plate 12 is also rounded, and first pipe fitting 13 takes shape in the upper surface of dividing plate 11 and extends up, and second pipe fitting 14 then forms in the lower surface of dividing plate 11 and extends down; The external diameter of first pipe fitting 13 is littler than the external diameter of second pipe fitting 14, and the external diameter of second pipe fitting 14 causes described conduit 200 can closely be placed on the mouth of pipe place of second pipe fitting 14 then corresponding to the internal diameter of described conduit 200.

Feather valve 20 is made for flexible plastic or elastomeric material, it is arranged on the pedestal 10, feather valve 20 comprises a valve portion 21 and connection valve portion 21 and is placed on a flexible component 22 of first pipe fitting 13, as shown in Figure 1, valve portion 21 roughly is column type and offers a slit 211 above the mouth of pipe 131 of corresponding first pipe fitting 13; The outer surface of flexible component 22 forms a taper section 221, connect one of taper section 221 supports and pastes section 222, connects and support a deflection section 223 of pasting section 222, a supporting section 224 that connects deflection section 223.

Hollow sleeve 30 forms for hard plastics is molded, its be placed on feather valve 20 outer and with pedestal 10 mutual windings, hollow sleeve 30 has an opening 31 that inserts for described injection tube 100 and reaches a cavity volume 32 that communicates with opening 31; Can know from Fig. 4 and to find out that the profile of the first half of the inwall of hollow sleeve 30 is corresponding to the taper section 221 of feather valve 20 and support the profile that pastes section 222, increases airtight and leak preventing effect whereby.In addition, the subsides section 222 of supporting of feather valve 20 is provided with a plurality of annular grooves 2221, and when producing strain when supporting subsides section 222 to be pushed, annular groove 2221 can provide the space of strain.On the other hand, because it is maximum and support the inwall that pastes hollow sleeve 30 support to paste the external diameter of section 222, the design of annular groove 2221 helps to make a small amount of gas that exists between the inwall that supports the outer wall that pastes section 222 and hollow sleeve 30 to have to push mobile space.

The external diameter of deflection section 223 is littler than the internal diameter of hollow sleeve 30, causes deflection section 223 can produce deflection deformation (as shown in Figure 5) in the cavity volume 32 of hollow sleeve 30.The profile of supporting section 224 equals the profile of dividing plate 11 haply, and feather valve 20 can firmly be stood on the dividing plate 11, and can not allow the lower end of feather valve 20 produce slippage.Can know from Fig. 4 and to find out that the edge shaping of supporting section 224 has a groove 2241, when causing the mutual winding of hollow sleeve 30 and pedestal 10, the root edge of hollow sleeve 30 can embed the groove 2241 of supporting section 224 interior and with pedestal 10 mutual build-ins.

With reference to figure 5, below operating principle of the present utility model will be described.When injection tube 100 inserts the opening 31 of hollow sleeve 30 and pushes feather valve 20 down, flexible pipe 22 deflection deformation and valve portion 21 in cavity volume 32 supports the upper limb that is affixed on first pipe fitting 13, cause slit 211 to enlarge and communicate with the mouth of pipe 131 of first pipe fitting 13, at this moment, the flow of liquid in the injection tube 100 are crossed first pipe fitting 13 and second pipe fitting 14 and are entered in the described conduit 200.

Compared to prior art, the utlity model has following effect:

According to this utility model, only have pedestal 10,

feather valve

20 and 30 3 assemblies of hollow sleeve owing to exempt from pin type adapter 1, so it is simple in structure, cost reduces; And these three assemblies all can be molded and shaped and be easy to assembly, make and assembling man-hour so significantly shorten.

According to this utility model, because the taper section 221 of feather valve 20 and the inner surface contour that equals hollow sleeve 30 to the exterior contour that pastes section 222, so in injection tube 100 inserts the opening 31 of hollow sleeves 30 and when pushing feather valve 20, taper section 221 is pasted section 222 and is still produced good sealing with the inwall of hollow sleeve 30 and support and paste effect with supporting, so the suitable excellence of airtight leak preventing effect of the present utility model.

The above; it only is preferred embodiment of the present utility model; be not therefore to limit scope of patent protection of the present utility model,, all should be contained within the protection domain of the present utility model so the equivalent structure that uses this utility model description and accompanying drawing to do such as changes.

Claims

One kind be used to connect injection tube and conduit exempt from the pin type adapter, it is characterized in that the described pin type adapter of exempting from comprises:

One pedestal, the coaming plate that it comprises a dividing plate and connects this dividing plate periphery, a surface forming of described dividing plate has first pipe fitting, and another surface forming of dividing plate has and communicates with first pipe fitting and second pipe fitting of connecting duct;

One feather valve, it is arranged on the pedestal, and described feather valve comprises a valve portion and connects this valve portion and be placed on a flexible component of first pipe fitting, and valve portion offers a slit above the mouth of pipe of corresponding first pipe fitting;

One hollow sleeve, its be placed on feather valve outer and with the mutual winding of pedestal, described hollow sleeve has an opening that inserts for injection tube and a cavity volume that communicates with opening.
2. what be used to connect injection tube and conduit according to claim 1 exempts from the pin type adapter, it is characterized in that, described first formation of tubes is in the upper surface of dividing plate and extension up, second pipe fitting then forms in the lower surface of dividing plate and extends down, the external diameter of first pipe fitting is less than the external diameter of second pipe fitting, and the external diameter of second pipe fitting is corresponding to the internal diameter of described conduit.
3. exempt from the pin type adapter as what be used to connect injection tube and conduit as described in the claim 2, it is characterized in that the outer surface of described flexible component forms a taper section, connect one of taper section supports and paste section, connect and support deflection section of pasting section and a supporting section that connects the deflection section.
4. exempt from the pin type adapter as what be used to connect injection tube and conduit as described in the claim 3, it is characterized in that the local configuration correspondence of the inwall of described hollow sleeve compresses the taper section and supports and paste section.
5. exempt from the pin type adapter as what be used to connect injection tube and conduit as described in the claim 4, it is characterized in that, described supporting pasted section and is provided with a plurality of annular grooves.
6. exempt from the pin type adapter as what be used to connect injection tube and conduit as described in the claim 5, it is characterized in that the external diameter of described deflection section is less than the internal diameter of hollow sleeve.
7. exempt from the pin type adapter as what be used to connect injection tube and conduit as described in the claim 6, it is characterized in that the profile of described supporting section equals the profile of dividing plate.
8. exempt from the pin type adapter as what be used to connect injection tube and conduit as described in the claim 7, it is characterized in that the edge of described supporting section forms a groove, the root edge of hollow sleeve embed in the groove and with the mutual build-in of pedestal.