CN201101710Y - T type rubber bung for injection - Google Patents

Abstract

The utility model discloses a T-shaped rubber plug used for injection liquid which comprises a plug neck and a coronal part. The plug neck is a ring salient which extends downward along the coronal part. The ring salient encloses a center hole, and the longitudinal profile of the center hole is in the shape of trapezoid. The diameter of the lower part of the center hole is bigger than the diameter of the upper part for convenient clean. A circular dent is arranged at the surface of the coronal part, the inner wall of the dent is in the shape of arc, and a concave hole used for inserting needles is arranged at the bottom of the dent. The design does not only shorten the height of the plug neck of the existing technology, reduce the contact area of the rubber plug neck and medicines, enhance medicine clarity, but also makes the structure of the center hole have small upper part and big lower part for convenient clean, and therefore, cleaning dead angle cannot be generated. The center part of the crown is sunk downward, and the sunk part is provided with two concave holes used for pricking by needles to make the center part of the crown become thin, reduce the weight of a rubber plug by about 15 percent, and lower the cost.

Description

T type injection rubber stopper

Technical field:

This utility model relates to the improvement of a kind of T type injection with rubber stopper, belongs to technical field of medicine packaging.

Background technology:

The existing injection bottle stopper structure of bottle, a kind of is the flange formula structure that is made of flange and plug neck, and this structure is eliminated at present substantially, and few people use; Another kind is that this bottle stopper is provided with the protruding circle of elasticity at the upper surface of bizet by bizet and the bottle closure of rubber (seeing accompanying drawing 1) that constitutes of plug cervical region, and is provided with the aluminium lid body on the bottle stopper of being covered in that matches with the protruding circle of elasticity at bizet.But there are such two drawbacks in the bottle stopper of this structure, the one, plug cervical region position is oversize, because plug needed to clean before being delivered for use behind the finished product, in order to avoid pollution medicine, if the oversize words in plug cervical region position, the centre bore of plug neck inwall is difficult to clean, and forms the dead angle, easily causes the pollution to medicine during use; The 2nd, bizet integral body is the disk shape of uniform thickness, and the acupuncture position is too thick in other words, easily causes the phenomenon of acupuncture exfoliation, after pin is extracted, pin hole neither be fine from close property.

The utility model content:

For overcoming the defective of prior art, this utility model aims to provide a kind of T type injection rubber stopper of new construction, has reduced the sealing height of plug neck, has reduced the contact area of plug cervical region and medicine, helps improving the clarity of medicine.

The technical solution of the utility model is achieved in that

T type injection rubber stopper comprises plug cervical region and bizet, and described plug cervical region is the annular projection that extends downwards along described bizet, and described annular projection surrounds a centre bore, and the vertical section of described centre bore is trapezoidal.

The surface of described bizet is provided with circular pit, and the inwall of described pit is curved, and the bottom of pit is provided with the shrinkage pool for contact pin.

Compared with prior art, the beneficial effects of the utility model are embodied in:

1, the plug cervical region is the annular projection that extends downwards along bizet, and the height of plug neck is little in the aspect ratio prior art of projection, has reduced the contact area of plug cervical region and medicine like this, has reduced pollution, has improved the clarity of medicine; This change does not influence the sealing of plug and vial, because the pressure that sealing leans on plug portion and bottleneck to produce seals.

2, the vertical section of the centre bore that surrounded of projection is trapezoidal, and promptly the lower diameter of centre bore is greater than upper diameter, and this structural design is convenient to the cleaning to the plug finished product, makes not produce the cleaning dead angle in the centre bore, has avoided the pollution of plug to medicine.

3, the surface of bizet is provided with pit, is provided with the shrinkage pool for contact pin in the pit, and this structural design makes the intermediate thin of bizet, and thick all around, when acupuncture, stress is concentrated to center position, can not produce sliding pin phenomenon, and strengthened pin hole from close property; The inwall of bizet pit is curved, is convenient to the cleaning of plug finished product before being delivered for use.

Description of drawings:

Fig. 1 is the cutaway view of a kind of plug in the prior art.

Fig. 2 is the vertical view of this utility model plug.

Fig. 3 be Fig. 2 along A-A to cutaway view.

Number in the figure: 1, bizet, 2, the plug cervical region, 3, annular projection, 4, centre bore, 5, pit, 6, shrinkage pool.

Below in conjunction with the drawings and specific embodiments this utility model is described in further detail.

The specific embodiment:

Embodiment:

Fig. 1 is the cutaway view of a kind of plug in the prior art, and wherein 1 is bizet, the 2nd, and the plug cervical region.Structure of the present utility model is referring to Fig. 2, Fig. 3, the plug of present embodiment comprises plug cervical region and bizet 1, described plug cervical region is the annular projection 3 that extends downwards along described bizet 1, described annular projection surrounds a centre bore 4, the vertical section of described centre bore is trapezoidal, the lower diameter that is centre bore is convenient to clean greater than upper diameter.The surface of described bizet is provided with circular pit 5, and the inwall of described pit is curved, and the bottom of pit is provided with the shrinkage pool 6 for contact pin.During concrete enforcement, along bizet 1 annular projection 3 is set downwards radially, the outer wall top 2MM height of annular projection 3 can be made as linear, and bottom 3MM is attenuation gradually highly from top to bottom, the inwall of annular projection 3 is attenuation gradually from top to bottom also, the height of plug neck in the prior art had both been shortened in design like this, had reduced the contact area of plug cervical region and medicine, improved the clarity of medicine, make that also the structure of centre bore is that little bottom, top is big, be convenient to clean, can not produce and clean the dead angle.The pit that diameter is 10MM is set on the surface of plug bizet, the inwall of pit is curved, be convenient to clean, two shrinkage pools that diameter is respectively 2.5MM and 1.8MM are set in the bottom of pit, as the acupuncture position, this structural design makes the thickness of plug bizet reduce on the one hand, plug weight reduces about 15%, has reduced manufacturing cost; On the other hand, the position of acupuncture than around thin and curved, when acupuncture, stress is concentrated to center position, thereby can not produce sliding pin phenomenon, pin hole also stronger from close property.The fit system of plug and vial and aluminum type lid does not change.

Claims (2)

1, T type injection rubber stopper includes bizet and plug cervical region, it is characterized in that described plug cervical region is the annular projection (3) that extends along described bizet (1) downwards, and described annular projection surrounds a centre bore (4), and the vertical section of described centre bore is trapezoidal.

2, T type injection rubber stopper according to claim 1 is characterized in that the surface of described bizet (1) is provided with circular pit (5), and the inwall of described pit is curved, and the bottom of pit is provided with the shrinkage pool (6) for contact pin.

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