CN201500299U

CN201500299U - Medicine plug for infusion bag

Info

Publication number: CN201500299U
Application number: CN200920246070XU
Authority: CN
Inventors: 何国强; 陈友山
Original assignee: Aoxing Hengxun Packing Sci & Tech Co Ltd Beijing
Current assignee: Reno Little Heng Xun packaging technology (Beijing) Co., Ltd.
Priority date: 2009-09-28
Filing date: 2009-09-28
Publication date: 2010-06-09
Anticipated expiration: 2019-09-28

Abstract

The utility model relates to a medicine plug for an infusion bag, which comprises an upper piece and a lower piece which are welded and a rubber plug arranged between the upper piece and the lower piece; one of the upper piece or the lower piece is provided with a convex part, and the other is provided with a concave part plugged with the convex part; and the upper piece and the lower piece are welded together through the convex part and the concave part. Optimally, the convex part is arranged on the upper piece, and the concave part is arranged on the lower piece. The convex part extends downwards and axially along the lower end surface of the upper piece; the convex part is provided with an outer wall surface; the concave part sinks downwards from the upper end surface of the lower piece; and the concave part is provided with an inner wall surface. The medicine plug for the infusion bag can ensure the concentricity of the upper piece and the lower piece in the welding process, and improve the product quality.

Description

Transfusion bag medication plug

Technical field

This utility model is relevant for a kind of medicine plug, especially relevant for a kind of transfusion bag medication plug of medical field.

Background technology

The medicine plug that uses on the transfusion bag generally comprises two kinds of loading plug and dosing plugs.The loading plug is used to connect transfusion device and transfusion bag.The dosing plug is used for being pierced through by syringe and adds other and the medicine of infusing and being used to transfusion bag.

Existing transfusion bag medication plug comprises the last part that is connected, part and be located in rubber stopper between the two down.Last part is to be welded to connect with a kind of frame mode that following part is connected, upper surface butt joint with last lower surface and following part, pass through vibration of ultrasonic wave, the upper surface frictional heat generation fusion of the lower surface of last part and following part, thereby be bonded together and form solder side by the upper surface of fused lower surface of going up part and following part, weld together with following part will go up part.But in actual production, use, find that having this welded transfusion bag medication plug also exists following deficiency:

One, because the lower surface of the last part that connects and the upper surface of following part all are smooth end face, there is not radial location structure, therefore in the vibrations process of ultrasonic bonding, be easy to take place radial relative vibration and displacement between the upper surface of the lower surface of last part and following part, be not easy to guarantee the concentricity of part and following part, influenced the product quality of finished medicines plug.

Two, because the lower surface of the last part of formation solder side and the upper surface of following part all are smooth end faces, when the upper surface of last lower surface and following part is pressed together, there is not certain space to hold fused scolder, have on the one hand that bonding area is little, the problem of firm welding degree difference, it is inner that second aspect exists scolder to grow the plug that is used as medicine from solder side easily, pollute medicinal liquid and cause the problem of product rejection, third aspect scolder outwards grows out from solder side easily, and the product appearance quality is difficult for guaranteeing.

The utility model content

The technical problems to be solved in the utility model provides a kind of transfusion bag medication plug, can guarantee the concentricity of part and following part in welding process, improves the quality of products.

The technical problems to be solved in the utility model provides a kind of transfusion bag medication plug, has certain scolder spatial accommodation, and scolder is difficult for growing out to product outside and inside, and bonding area is big, firm welding, product percent of pass height.

The technical problems to be solved in the utility model provides a kind of transfusion bag medication plug, can stop scolder fully and grow and pollute medicinal liquid and cause product rejection and scolder to grow out to the product outside influencing the problem of presentation quality to product is inner.

A kind of transfusion bag medication plug that this utility model provides, comprise the last part of welding mutually, following part and the plug between last part, following part, in the middle of described upward part and the following part one is provided with protuberance, another person is provided with the recess that plugs with described protuberance, and the described part of going up welds together by described protuberance and recess with following part.

In one embodiment, described protuberance is located on the part, and described recess is located at down on the part.

In one embodiment, described protuberance extends axially downwards along described lower surface of going up part, and described protuberance is formed with outside wall surface, and described recess is formed to lower recess by the described upper surface of part down, and described recess is formed with internal face.

In one embodiment, the lower end of the outside wall surface of described protuberance radially inwardly is connected with the lower surface.

In one embodiment, the outside wall surface of described protuberance is a male cone (strobilus masculinus), and the internal face of described recess is an inner conical surface, and described male cone (strobilus masculinus) is corresponding with described inner conical surface.

In one embodiment, the inner conical surface tapering of the male cone (strobilus masculinus) of described protuberance and described recess is different.

In one embodiment, the described bottom of the internal face of the recess of part down extends to form radial end face to the center, the inner of described radial end face forms the internal ring wall relative with the internal face of recess vertically, the outside wall surface of the internal face of described recess, described radial end face and described internal ring wall forms holds annular groove, and the described protuberance of going up part is plugged on holding in the annular groove of described recess.

In one embodiment, the lower surface of described protuberance is provided with the friction convex tendon.

In one embodiment, the outside wall surface of described internal ring wall is the conical surface.

In one embodiment, described transfusion bag medication plug is dosing plug or loading plug.

According to such scheme, this utility model is significant with respect to the effect of existing structure:

One, transfusion bag medication plug of the present utility model, last part and following part weld together by protuberance and the recess that plugs, in the process of welding vibrations, protuberance that plugs and recess can play radial positioning action, therefore go up part and following part and be not easy to take place radial relative vibration and displacement, can guarantee to go up the concentricity of part and following part, improve the product quality of medicine plug.

Two, the transfusion bag medication plug in this utility model form certain scolder spatial accommodation, so bonding area is relatively large, firm welding, simultaneously also to be difficult for growing the plug that is used as medicine from solder side inner for scolder, pollutes medicinal liquid and cause product rejection, or outwards grow out from solder side, influence presentation quality.

Three, transfusion bag medication plug of the present utility model forms internal ring wall on the following part, can stop fully that scolder infiltrates medicine plug inside, guarantees product quality.

Description of drawings

Fig. 1 is the decomposing schematic representation of a kind of transfusion bag medication plug of the present utility model.

Fig. 2 is the assembling view of Fig. 1.

Fig. 3 is the decomposing schematic representation of another kind of transfusion bag medication plug of the present utility model.

Fig. 4 is the assembling view of Fig. 3.

Fig. 5 is the use sketch map of transfusion bag medication plug of the present utility model.

The specific embodiment

As Fig. 1, shown in 2, a kind of transfusion bag medication plug 100 that this utility model provides, comprise the last part 1 of welding mutually, following part 2 and be positioned at part 1, plug 3 between the following part 2, the lower surface 11 of last part 1 extends axially downwards and forms protuberance 12, protuberance 12 is formed with outside wall surface 121 and lower surface 122, form the recess 21 that plugs with last 1 protuberance 12 on the infra spare 2, recess 21 is formed to lower recess by the upper surface 20 of following part 1, recess 21 is formed with internal face 211, last part 1 and following part 2 weld together by this protuberance 12 and recess 21, protuberance 12 that plugs and recess 21 can play the effect of radial location, have guaranteed the product axiality in welding process effectively.In this embodiment, recess 21 is formed on down on the part 2, for prevent scolder because of gravity flows downward outer grow helpful.In another embodiment, protuberance 12 can be located at down on the part 2, and recess 21 is located on the part 1, and accompanying drawing is provided no longer in detail.

In one embodiment, the outside wall surface 121 of protuberance 12 is a male cone (strobilus masculinus), and the internal face 211 of recess 21 is an inner conical surface, and the male cone (strobilus masculinus) of protuberance 12 is corresponding with the inner conical surface of recess 21, forms weld part by this male cone (strobilus masculinus) and inner conical surface frictional fusion in welding process.In preferred embodiment, inner conical surface 211 taperings of the male cone (strobilus masculinus) 121 of protuberance 12 and recess 21 are different, therefore in the time of in recess 21 that protuberance 12 is planted, two conical surfaces that tapering does not wait are very beneficial for forming the line contact of circumferencial direction, in the middle of the process of ultrasonic bonding vibrations, the line contact of small size is easier to make frictional heat to concentrate and the fusion on promotion contact inclined-plane, and also can form scolder spatial accommodation 4 between the conical surface that tapering does not wait, be used for holding fused scolder, thereby scolder be not easy to medicine beyond the Great Wall portion and internal penetration grow out, be easy to guarantee product quality.Certainly, the tapering of the male cone (strobilus masculinus) of protuberance 12 and the inner conical surface of recess 21 also can be identical, can guarantee the welding concentricity equally.

In addition, in one embodiment, the outside wall surface of protuberance 12 also can be isometrical outer cylinder, the internal face of recess 21 also is isometrical inner cylinder, the inside of the internal face of recess 21 radially extends to form radial end face to the center, and the internal face of the outside wall surface of protuberance 12 and recess 21 preferably accurately cooperates, to guarantee the welding concentricity, in this structure, be to form weld part by the lower surface of protuberance 12 and the radial end face of recess 21.In another embodiment, in the middle of the internal face of the outside wall surface of protuberance 12 and recess 21, also can one are conical surfaces, another person is isometrical cylinder, thus the part generation fusion of being interfered by contact in welding process forms scolder.

As Fig. 3, shown in 4, another preferred embodiment in, transfusion bag medication plug 101 is identical with the basic structure of aforementioned each embodiment, also comprise the last part 1 of welding mutually, following part 2 and be positioned at part 1, plug 3 between the following part 2, the lower surface 11 of last part 1 extends axially downwards and forms protuberance 12, protuberance 12 is formed with outside wall surface 121 and lower surface 122, form the recess 21 that plugs with last 1 protuberance 12 on the infra spare 2, recess 21 is formed with internal face 211, the difference of this embodiment is: the bottom at internal face 211 radially extends to form radial end face 212 to the center, the inner of this radial end face 212 forms the internal ring wall 22 relative with internal face 211 vertically, internal face 211 by recess 21, the outside wall surface 221 of radial end face 212 and internal ring wall 22 forms holds annular groove 23, the height of internal ring wall 22 is lower than the internal face 211 of recess 21, the outside wall surface 221 of internal ring wall 22 can be isometrical cylinder, be preferably the conical surface, the protuberance 12 of last part 1 is plugged on holding in the annular groove 23 of recess 21.In this embodiment, the effect that last part 1 and following part 2 play radial location by the protuberance 12 that plugs and recess 21, when guaranteeing the product axiality, formed the bigger annular groove that holds, can hold a large amount of scolders, scolder not can to medicine beyond the Great Wall portion grow out, and internal ring wall 22 can stop fully that scolder flows into medicine plug inside, guarantees product quality.

Preferably, the lower surface 122 of protuberance 12 is provided with friction convex tendon 123, is beneficial to the ultrasound wave friction welding.In another embodiment, can on the radial end face 212 of recess 21, be provided with the friction convex tendon.Perhaps on the radial end face 212 of the lower surface 122 of protuberance 12 and recess 21, the friction convex tendon is set simultaneously, is beneficial to welding, also improve weld strength.

As shown in Figure 5, a kind of transfusion bag medication plug that provides in this utility model can be dosing plug and the loading plug that is connected with transfusion bag 5.As shown in Figure 5, the transfusion bag medication plug 100 shown in Fig. 1,2 is the dosing plugs that are positioned at transfusion bag 5 left sides, and the transfusion bag medication plug 101 shown in Fig. 3,4 is the loading plugs that are positioned at Fig. 5 right side.Certainly the transfusion bag medication plug shown in Fig. 1,2 also can be used as the loading plug on transfusion bag 5 right sides, and the transfusion bag medication plug shown in Fig. 3,4 no longer provides accompanying drawing as the dosing plug in Fig. 5 left side.

The above; it only is the specific embodiment of the present utility model; certainly can not limit the scope that this utility model is implemented with this; all equivalent variations and modifications of doing according to content of the present utility model; promptly other people are arranged to concavo-convex plant structure with the last part of transfusion bag medication plug with following part and guarantee to weld concentricity arbitrarily, just should belong to protection domain of the present utility model.

Claims

1. transfusion bag medication plug, comprise the last part of welding mutually, following part and the plug between last part, following part, it is characterized in that: one in the middle of described upward part and the following part is provided with protuberance, another person is provided with the recess that plugs with described protuberance, and the described part of going up welds together by described protuberance and recess with following part.

2. transfusion bag medication plug according to claim 1, it is characterized in that: described protuberance is located on the part, and described recess is located at down on the part.

3. transfusion bag medication plug according to claim 2, it is characterized in that: described protuberance extends axially downwards along described lower surface of going up part, described protuberance is formed with outside wall surface, and described recess is formed to lower recess by the described upper surface of part down, and described recess is formed with internal face.

4. transfusion bag medication plug according to claim 3 is characterized in that: the lower end of the outside wall surface of described protuberance radially inwardly is connected with the lower surface.

5. transfusion bag medication plug according to claim 4 is characterized in that: the outside wall surface of described protuberance is a male cone (strobilus masculinus), and the internal face of described recess is an inner conical surface, and described male cone (strobilus masculinus) is corresponding with described inner conical surface.

6. transfusion bag medication plug according to claim 5 is characterized in that: the inner conical surface tapering of the male cone (strobilus masculinus) of described protuberance and described recess is different.

7. transfusion bag medication plug according to claim 4, it is characterized in that: the described bottom of the internal face of the recess of part down extends to form radial end face to the center, the inner of described radial end face forms the internal ring wall relative with the internal face of recess vertically, the outside wall surface of the internal face of described recess, described radial end face and described internal ring wall forms holds annular groove, and the described protuberance of going up part is plugged on holding in the annular groove of described recess.

8. transfusion bag medication plug according to claim 7, it is characterized in that: the lower surface of described protuberance is provided with the friction convex tendon.

9. transfusion bag medication plug according to claim 7 is characterized in that: the outside wall surface of described internal ring wall is the conical surface.

10. according to any described transfusion bag medication plug in the claim 1～9, it is characterized in that: described transfusion bag medication plug is dosing plug or loading plug.