CN2168596Y

CN2168596Y - Disposable injecting ampule

Info

Publication number: CN2168596Y
Application number: CN 93220840
Authority: CN
Inventors: 段璞
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-10
Filing date: 1993-08-10
Publication date: 1994-06-15
Anticipated expiration: 2003-08-10

Abstract

The utility model relates to a medical injector, particularly a disposable injecting ampule. The utility model is characterized in that the front end of the cylindrical injecting nipple fixed at one end of the injecting ampule is made into a closed port, and the internal opening at the tail end of the casing of the injecting ampule is provided with an annular sealed lug boss. Both ends of the needle head which are needle-shaped needles are fixed on a needle head seat and are exposed out of both the inner and the outer ends of the needle head seat. The utility model has the advantages of simple structure, equal cost to the cost of a disposable injector. After the disposable injecting ampule is used for injection, the injector is destroyed and has no possibility of reusing.

Description

Disposable injecting ampule

This utility model relates to a kind of injector for medical purpose, particularly a kind of disposable injection ampoule.

Chinese patent discloses the patent that a kind of patent No. is 88201312U " a disposable direct injection ampoule " by name in known technology at present.The hollow barrel-type casing front end of this syringe body is fixed with garden tubular injection nipple, and this injection nipple front end is an open type, for liquid drug or sealing need be on injecting nipple outside be with sealing cap.Outside hollow tubular shell end, also be with seal cover.Make this product cost height, liquid medicine filling is sealed also difficulty and coming off easily of medicated cap behind hollow barrel-type casing because air pressure acts on.

For overcoming the weak point of above-mentioned known technology, this utility model designs a kind of simple in structure, the better disposable injection ampoule of sealing property.

The purpose of this utility model is achieved in that the front end that is about to above-mentioned garden tubular injection nipple 2 is made as close mouth, at above-mentioned housing 1 tail end internal orifice one annular seal boss 3 is arranged, the ratio of the ring width of annular seal boss 3 and housing 1 internal diameter is between 1:30 to 1:5.Injection needle 6 two ends are acicular entry needle 8, are fixed on the needle holder 7, and expose at needle holder 7 inside and outside two ends.

The utility model has the advantages that simple in structurely, its cost only is equivalent to the cost of disposable syringe.Use after this disposable injection ampoule injection, syringe is promptly destroyed, does not have reusable probability.

Describe this utility model in detail below in conjunction with accompanying drawing.

Fig. 1 is the ampoule portion generalized section of disposable injection ampoule.

Fig. 2 is the needle section sketch map of disposable injection ampoule.

Fig. 3 be disposable injection ampoule push away the handle sketch map.

As shown in Figure 1, the main body of disposable injection ampoule is a hollow garden tubular shell 1, at the front end of housing 1 the injection nipple 2 of a diameter less than garden tubular shell 1 external diameter is arranged.One end opening and housing 1 integral body of tubulose injection nipple 2 are fixed with one.The other end is a close mouth.Adorn one in the tail end of housing 1 and push away medicine piston 4, push away medicine piston 4 and housing 1 inwall and be sealed sliding movingly.In the inside of housing 1 medicinal liquid 12 is housed.Tail end internal orifice at housing 1 has an annular seal boss 3, and the ring inner surface of annular seal boss 3 is an outside garden platform shape at a gulp.Promptly almost equating, and be 4:5 at the ratio of boss 3 inner ends one side internal diameter and housing internal diameter with housing 1 internal diameter near housing 1 tail end mouth one side ring shape seal boss 3 internal diameters.Outside housing 1 tail end, pull handle 5 is arranged.

As shown in Figure 1, leave a T type groove 9 pushing away medicine piston 4 one sides.As shown in Figure 3 disposable injection ampoule push away handle 11 1 ends have one with push away the corresponding T type of medicine piston 4T type groove boss 10.

The syringe needle 6 of disposable injection ampoule as shown in Figure 2 has the pin 8 of a hollow tubular, and pin 8 two ends are the prong shape, and are installed on the needle holder 7, and an end exposes in the outside of needle holder 7, and the other end exposes in needle holder 7 inboards.

When using this disposable injection ampoule, at first with medicinal liquid 12 fills in housing 1, will push away medicine piston 4 again and squeeze by housing 1 tail end mouth and push in the housing 1.This moment is owing to there is portion gas 13 to be press-sealed in the housing 1, make and push away medicine piston 4 and be pressed towards housing 1 tail end mouth, but since push away medicine piston 4 around the plane of housing 1 tail end mouth one side with the inner side plane of annular seal boss 3 limited piston 4 that tightly forces together, make it not to be pushed out housing 1.And medicinal liquid 12 is sealed in the ampoule housing 1.When needs are injected, the needle holder 7 of syringe needle 6 can be set on the injection nipple 2, the pin 8 that the end of injecting nipple this moment is in needle holder 7 inboards punctures.The boss 10 that will push away handle 11 again is loaded in the groove 9 of piston 4, when syringe needle being thrust subcutaneous position to be injected, pushes away handle 11, and medicinal liquid can need injection place by being injected in the housing 1.

Claims

1, a kind of disposable injection ampoule, it includes hollow tubular shell, injection syringe needle and push away handle, the housing front end garden tubular injection nipple that is connected, adorn one in the housing tail end and push away the medicine piston, push away medicine piston and inner walls and be sealed sliding movingly, pushing away handle is connected and pushes away on the medicine piston, the front end that it is characterized in that above-mentioned garden tubular injection nipple (2) is a close mouth, at above-mentioned housing (1) tail end internal orifice one annular seal boss (3) is arranged, the ratio of annular seal boss (3) width and housing (1) internal diameter is 1: 30～1: 5.

2, disposable injection ampoule according to claim 1 is characterized in that injection syringe needle (6) two ends are acicular entry needle (8) and expose at the inside and outside two ends of needle holder (7).

3, disposable injection ampoule according to claim 1, the ring inner surface that it is characterized in that annular seal boss (3) are garden platform shape outwardly at a gulp.