CN1004925B - Container with integraly formed non-coring and non-leaking piercing site - Google Patents

Abstract

The present invention relates to a container used for an asepsis instrument. The part of the present invention penetrated by an injector needle can prevent a needle cavity from blocking and avoid leaking, and is formed into a whole with the container. The present invention uses a double arch structure to cause a needle head to penetrate, the needle cavity is not blocked, and sealing is formed between the container and the needle. When a larger plastic needle is used, the present invention provides a favorable condition in order to ensure sealing.

Description

The integraly formed container that pin chamber non-coring non-leaking piercing site is arranged

Involved in the present invention is a kind of molded plastic container that the piercing site of pin chamber non-coring non-leaking is arranged, particularly a kind of its piercing site of container and the as a whole structure of container.

In the patient of hospital or treatment unit, medicine between container and feeding pipe, or when transferring, through entry needle commonly used and syringe, or is transferred pin between container and container, or the pin that is installed in solution transporting device end goes to finish.

With liquid or solution with entry needle and syringe, or extract from container, or when container pours into, a bottle closure of rubber is arranged on the exemplary container of Shi Yonging now with transferring pin, part attenuate or similar thin film is arranged on it, and the metal injection pin is just gone up in this section and is inserted.The effect of thin film provides an insertion point, both can penetrate for entry needle, and can cause a sealing around needle body, and pin is stung in the film portion of rubber stopper when saturating, and the heel of pin can not cut off a fritter to rubber, or cuts next sprue.Rubber soft and have elastomeric character and make this penetrating become possibility.

The above-mentioned part of being cut off of rubber or sprue jam in the pin chamber are referred to as pin chamber sprue, have brought the probability of this " microgranule " being sent into patient's blood vessel, also may hinder the transmission of solution, thereby should give and prevent.

When using the transmission apparatus solution to be transferred to from container in the supply pipe, generally use a wide-aperture plastics pin, the use of method and above-mentioned metal needle is similar.In this case, pin chamber sprue also should be avoided.But when needle body penetrates bottle stopper, form around it sealing then difficulty accomplish that because it is reported the hole that large aperture plastics pin forms, shape is irregular often.

The glass or the rigidity plastics structure of rubber stopper are arranged above the container employing of popular use, perhaps use a flexible pouch, the tubular attachment part that assembling is arranged above or add up is in order to place or to support to supply the membranous body of metal injection pin or plastics needle penetration.

The container of this popular use constitutes with independent assembly, must be with its combination or assembly unit.Because the article that put in the bottle are normally aseptic, so in the bottling process, must keep aseptic condition.Obviously, producing a kind ofly like this provides the system of aseptic medicine to hospital or sick bed environment, is quite expensive with the expense of elements combination manufacturing or processing.

Because the development of plastic containers manufacturing technology might be made container with one procedure recently, inject solution aseptic, that do not give birth to heat, then at the aseptic condition lower seal.But, though there has been machine can finish a such manufacture process, up to now, can't produce a kind of container structure, can when penetrating, prevent pin chamber sprue, and when pin inserts container, around needle body, form sealing with entry needle.

The method of plastic containers molding and sealing and apparatus, as United States Patent (USP) the 3rd, 851,029 and 4,172, existing described in No. 534.Can see one patent from the back: this patent has really also solved the problem of the point of puncture of pin, but this structure costs an arm and a leg, and does not make full use of present utilizable molding technology.

According to principle of the present invention, the container that a kind of blowing mould is moulded has been proposed, after the primer solution with an integrally formed contact pin dot encapsulation.This contact pin point is when going to puncture with pin, but the non-coring non-leaking.

The above-mentioned effect that it is found that the bottle closure of rubber film portion can be gone imitation with an integrally formed part.Form two vaults exactly and remove to replace gag on container, its position is near the general place of living in of gag of conventional container.

This pair vault has a main arch, is stretched over the outside of container neck diametrically.A littler vault is arranged, also cry on the upper surface that subarch is positioned at main arch, with main arch off-centre.The jointing line of mold should depart from the center of circle on main arch top on the main arch top, to avoid hindering the version of subarch.

The plastics on main arch top will have enough thickness, and keeping its shape, and when contact pin, subarch is stung, and main arch is indeformable.The thickness on subarch top is slightly less than the main arch top, and because of manufacture method, position, the size and the degree of depth and different.

In desirable embodiment of the present invention, the plastic containers that a kind of blowing mould is moulded have been proposed, the cervical region that container has main body and main body to communicate and extends from solid.And diameter is greater than the hollow vault of cervical region.Vault is positioned at the end in addition of cervical region, and complete closed is generally circle, and is concentric with cervical region, and well-regulated arc-shaped outer surface.The subarch top is arranged on the outer surface, and diameter pushes up less than main arch, along leaving the direction that the main arch backform is moulded jointing line, departs from the centrage on main arch top.

Carry out transferring of liquid in order to pierce through container with entry needle, compressing subarch top, the tip of pin.When the needle-penetration subarch pushes up, at first on the subarch roof, form a nick.

On the surface on subarch top, form nick, can prevent pin chamber sprue, and, can guarantee the tight contact between plastic material and the needle body, correct sealing is arranged when motionless in container to guarantee cushion to the draw point of small-bore.

For the plastics pin, then the diameter of the inner surface of cervical region will be calibrated, and mates with the diameter with big plastics pin, thereby as long as the outer surface of plastics pin and the inner surface of cervical region contact, just can keep sealing.

Therefore, the structure of narrating above can both adapt to metal needle, can adapt to the plastics pin again, can both prevent pin chamber sprue when transferring liquid with pin in both cases, and guaranteed correct sealing.

Therefore, a main purpose of the present invention is the sealed container that proposes a kind of molding, has the whole position that can prevent pin chamber sprue and non-leaking that constitutes.

Other purposes of the present invention and advantage according to the following narration of other desirable embodiments of the present invention, just can have clear and definite understanding.

Fig. 1 is an axonometric chart of the container of the realization principle of the invention.

Fig. 2 is the side view that vault top part is analysed and observe.

Fig. 3 is the top view of Fig. 2 vault.

Fig. 4～Fig. 7 represents the figure on draw point puncture subarch top.

Fig. 8 inserts the situation of container shown in Figure 1 for the plastics pin.

As shown in Figure 1, container 10 has the main body 12 of a hollow, and main body can have any cross section easily, as square, and rectangle or circle; A cervical region 14 is arranged, well-regulated circular inner diameter on the major part of its length; And there is the symmetrical main arch of a larger cross-section to push up 16.

Any commercially available suitable plastic material of container 10 usefulness is moulded with blowing moulding, and plastic properties is introduced hereinafter.Have a mold jointing line 18 to understand according to the one's own profession state of art, the equipment that its position is adopted when making container is decided.

Fig. 2 and Fig. 3 are made comparatively specific description: constitute the integrally formed non-coring non-leaking point of puncture of the main aspect of the present invention, comprise main arch top 16, have to be generally the circular outward flange 22 and the outer surface (or shell) 24 on a top.This outer surface is generally used the curved surface of rule, and outward bulge is prominent, and homogeneous thickness is arranged.Convex shoulder 25 provides the support that replenishes for vault 16.

Have subarch top 26 to form on outer surface 24, depart from the centrage of cervical region 14, diameter is little more a lot of than vault 16, reduced thickness.Can see that jointing line 18 has a curved arc, depart from out subarch top 26, make jointing line by centrage towards the opposite side of above-mentioned centrage, and the shape and the thickness on interfere with or compromise subarch top not.Main arch top 16 at least should to push up 26 height on vertical line identical with subarch at the height on the vertical line, and preferably than be high, unlikely damage subarch pushes up 26 when machinery being repaiied cut the excess stock on the seam 18.

The plastic material that constitutes container 10 has suitable rigidity, maintaining neutralize shape when mobile of normal use, but suitable surrender degree and flexibility should be arranged also, can understand from existing state of arts, works in described mode hereinafter making it.

Shown in Fig. 4～7, for sharp sharp 32 and the hollow draw point 28 of perforate or tube chamber 34, the just situation of puncture on subarch top 26.Be understandable that pin 28 can stretch out from a syringe (not shown), also can only be one and transfer needle device that the liquid in the container 10 transfers to this device, otherwise or transfer to container 10 from this device.

As shown in Figure 4, needle point 32 is placed on the center of circle on above-mentioned subarch top 26, towards direction be the centrage of cervical region 14, and about about 20 degree of slight inclination.When pin 28 is pushed downwards, at first on vault wall 26, form a nick 36, pin 28 penetrates roof then.Why can form nick before penetrating, be because vault 26 is compared with main arch top 16, and the thickness of desired shapes and attenuate is arranged.Why necessary nick is, be because can push away pin chamber 34 to the open edge 38 of vault 26, thereby sprue does not take place, and, when pin 28 is pushed main body 12, the open edge of the reclinate plastic wall outer surface of pin 28 that reclines, thus a sealing is provided, prevent that pollutant from entering container 10.

The outer surface 24 on main arch top 16 is curved a little downwards to be permissible, but vault 16, particularly the thickness of sidewall 22 should be enough, in case sidewall subsides.In this article it is stated as the accident distortion of vault 16, then should give and prevent.The outward bulge of outer wall 24 is prominent to be an important feature, these characteristics are arranged so can allow the distortion of mired, and help to prevent subsiding of vault 16, or the distortion of title accident, convex shoulder 25 helps this effect.

According to find, when large diameter plastics being transferred pin be applied to container 10, like the sprue plot can not take place; But when puncture vault 16, as if around the correct sealing of needle body, this is because the hole that pin stung out is not irregular cause.But can penetrate with this major diameter pin, also because as mentioned above, there is the cause of desired shapes and ideal lightening holes on subarch top 26.

As seen from Figure 5, when using plastics pin 42,, form the cervical region 14 of the part of container 10 in order to obtain correct sealing, inner surface 44 is arranged, its cross section is circular, and diameter is not more than the external diameter of pin 42, and internal diameter has certain measuring, cooperate with external diameter with the plastics pin, and do not have seam in a sizable length, regular shape is to guarantee the tight envelope between pin 42 and the surface 44.In the container bottle of relative low capacity, as 5 milliliters of capacity, can not use the plastics pin this moment, just do not need the cervical region internal diameter that regulation is measured.If do not use above-mentioned regulation to measure, in molding process, just can save one unnecessary operation so.

Therefore, or during with the especially big plastics pin 42 of routine, except that above-mentioned special circumstances, can use container 10 no matter with draw point 28.In some cases, container 10 both can be used for transferring liquid, also can be used for transferring gaseous medication.

Container according to principle of the invention manufacturing can be moulded with blowing mould, dabbling drug or aqueous solution, and sealing then, all the machinery of selling with the merchant is finished in a successive operation.For example, according to shapes of containers shown in the drawings, be " the gulping down Nat " of producing with Yisiman Chemical Company (Eastman Chemical Co.) (Tenite) low density polyethylene (LDPE) (Rexene PE107) of polyallomer (M7853-296E) and El Paso Polyolefins company product mould system.All can buy for two kinds as commodity.The machine that uses is West Germany Sulzbach-Laufen Kocher Plastik company product " Bottle Pack " type machine.The diameter on main arch top is 14 millimeters, 1 millimeter of brim height, and vault 16 pushes up the total height at 26 tops to subarch, does not comprise that crossette 25 is 6.5 millimeters.The diameter of vault 26 is 5.5 millimeters, and the degree of depth is 1 millimeter.The thickness minimum of subarch roof during for 0.2 millimeter in case with draw point sprue and suitable seal, general thickness range are provided is 0.2 to 0.25 millimeter.The thickness on main arch top 16 is greater than this number.

Therefore as can be seen, invention has proposed a kind of container, has the leak free point of puncture of integrally formed non-coring, for steel entry needle and plastics needle penetration.

According to the container that the principle of the invention is made, make and produce high-quality and have the container of reliability to become possibility, its cost is well below available at present, is suitable for doing the container of the purposes of this paper narration.

Though this paper has only done announcement to desirable embodiment of the present invention, it will be appreciated that the present invention is made variations and modifications and do not break away from the principle boundary of determining in the following claim, be the thing of possible.

Claims (8)

1, a kind of have the blowing mould of unitary construction to mould the system sealed container, point of puncture arranged for draw point or plastics needle penetration, and it comprises:

A) main body of holding or accepting liquid,

B) cervical region of a hollow stretches out and communicates with its inside from aforementioned body,

It is characterized in that it also comprises the main arch ejection device of the complete closed of hollow, communicate in the opposite side formation of above-mentioned cervical region and with its inside, the basic uniformly housing for circle of a thickness is arranged, its roughly regular cambered surface outward bulge is prominent, its diameter is greater than above-mentioned cervical region, and it is concentric with the central axial line of cervical region, the outer surface of above-mentioned housing has the contact pin position of a non-leakage, this position is a subarch top (26), its diameter is less than above-mentioned cambered surface housing, and a curved surface is arranged, and this curved surface makes it form nick by pin before penetrating, the outside of pin is pressed at the edge that opens wide around the hole that is formed by pin after penetrating, and prevents that to seal this hole pollutant from entering.

2, as the container in 1 of the claim the, the shell wall that it is characterized in that its above-mentioned main arch ejection device has enough thickness, therefore when aforesaid draw point or plastics pin extrude nick and penetrate on above-mentioned subarch top, can prevent that above-mentioned main arch from pushing up the distortion of having an accident property.The wall thickness of the above-mentioned main arch ejection device of wall ratio on subarch top is little a lot, realizes penetrating of no sprue to guarantee above-mentioned draw point or plastics pin on above-mentioned subarch top, and keeps the sealing of above-mentioned draw point external surface peripheral.

3, as the container in 2 of the claim the, it is characterized in that having a mold jointing line to pass through from above-mentioned main arch ejection device, the above-mentioned jointing line on the above-mentioned main arch ejection device outer surface is bending, gets around above-mentioned subarch top.

4, as the container in 3 of the claim the, it is characterized in that extending into the centrage on the above-mentioned subarch top of above-mentioned main arch ejection device, with the centrage of above-mentioned cervical region about 20 degree that tilt, the main arch ejection device is identical with the height that subarch withstands on the vertical line at least at the height on the vertical line.

5, as the container in 1 of the claim the, it is characterized in that above-mentioned cervical region has circular endoporus, its fixed diameter is in a sizable segment length and the diameter of plastics pin coupling, in case stopping leak leaks.

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