CN201022888Y

CN201022888Y - Full-automatic syringe

Info

Publication number: CN201022888Y
Application number: CNU2007200491441U
Authority: CN
Inventors: 滕飞
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-03-09
Filing date: 2007-03-09
Publication date: 2008-02-20
Anticipated expiration: 2017-03-09

Abstract

A full-automatic injector comprises a front barrel and a back barrel, the front barrel is internally provided with a double-ended needle which is fixed on a piston, the inner wall of the front barrel is provided with a thrust inward flange, a high-pressure medicine bottle which is sealed with high-pressure injection is arranged in the back barrel, the back end of the front barrel is equipped on the front end of the back barrel, a sealed cover of a bottleneck which is arranged on the front end of the high-pressure medicine bottle which is arranged in the back barrel is nested in the back end hole of the front barrel and is faced to a back needle of the double-ended needle, and a movable solid fastener is arranged on the joint of the front barrel and the back barrel. When the full-automatic injector is used, the solid fastener is removed, the back barrel is forward pushed, the back needle of the double-ended needle firstly perpetrates through the sealed cover which is arranged on the front end of the high-pressure medicine bottle, then a front needle is pushed out of the injector to a patient, and then soup in the high-pressure medicine bottle is automatically injected into the patient.

Description

Full-automatic syringe

Technical field

This utility model relates to a kind of medical syringe, particularly Dispoable medical medicine automatic injector.

Background technology

At present, for solving that patient in emergency circumstances saves oneself and the various automatic injectors that the needs of medicine injection are developed are carried out in the daily self-care of chronic disease, majority is write an article on percussion and automatic push-pin construction, the result causes these syringe majorities to have complex structure, inject unsettled shortcoming, and the most structures that adopt the syringe needle identical to expose of these syringes with conventional syringe, there is the sufferer of the feared state of mind can cause mental pressure to some to syringe needle, its injection effect is greatly affected, causes the injection failure easily.

Summary of the invention

The purpose of this utility model be propose a kind of simple in structure, the injection stability and safety, the convenient use can be avoided the have an injection full-automatic syringe of the feared state of mind of patient.

The full-automatic syringe that this utility model is designed, cylindrical shell and rear cylinder body before comprising, the external diameter of preceding cylindrical shell is more smaller than the internal diameter of rear cylinder body, be provided with a two sides syringe needle along central axis direction in the pro-cylindrical shell, but the waist of this two sides syringe needle is fixed on the piston of passing in the pro-cylindrical shell, the end face (promptly injecting end face) of its preceding syringe needle cylindrical shell before original state is not exposed, the front cylinder inwall of described preceding cylindrical shell is provided with the thrust inward flange, and the front port of pro-cylindrical shell is provided with capping; The high pressure medicinal liquid bottle of its external diameter less than the internal diameter of preceding cylindrical shell is installed in the described rear cylinder body, is packaged with deployed high-pressure injection medicinal liquid in the described high pressure medicinal liquid bottle, when injection needle was worn out the glue lid of medicine bottle, medicinal liquid can penetrate from syringe needle automatically; The main part of this high pressure medicinal liquid bottle is suspended from the axis position of rear cylinder body, fixedlys connected with rear cylinder body in its rear end; The rear end of cylindrical shell is assemblied in the front end of rear cylinder body before described, the front end bottleneck fluid sealant of the high pressure medicinal liquid bottle in the rear cylinder body covers in the rear port that overlaps the placket body of packing into and faces the back syringe needle of two sides syringe needle, and the joint of pro-cylindrical shell and rear cylinder body is equipped with a dismountable joint fixture.

When using this full-automatic syringe, open the capping of its preceding barrel port earlier, make this injection port push down patient's injection site, joint fixture before pulling down then on the joint of cylindrical shell and rear cylinder body, rear cylinder body is pushed forward, high pressure medicinal liquid bottle in the rear cylinder body is advanced in the cylindrical shell forward, at this moment, the back syringe needle of the two sides syringe needle in the preceding cylindrical shell is worn out the fluid sealant lid of high pressure medicinal liquid bottle front end earlier, this Jiao Gai continues to promote forward piston, the preceding syringe needle of two sides syringe needle is released injection port, make this syringe needle penetrate patient's injection site, and the medicinal liquid in the high pressure medicinal liquid bottle is injected in patient's body voluntarily.Fixedly the piston forward of two sides syringe needle is advanced to described thrust inward flange and promptly stops, thereby syringe needle penetrates in patient's body with the suitable degree of depth before making.

Thrust inward flange on the preceding cylinder inboard wall described in this full-automatic syringe can form by structure one ring-shaped depression on the pro-cylindrical shell barrel.

In this full-automatic syringe, the barrel of described preceding cylindrical shell is preferably opaque body, thereby makes the patient can't see injection needle, to eliminate the feared state of mind of patient to syringe needle.Need lucifuge as the medicine in the high pressure medicinal liquid bottle, the barrel that then assembles the rear cylinder body of high pressure medicinal liquid bottle also should be opaque body, is beneficial to the long preservation of medicine.

For conveniently observing the injection volume of medicinal liquid, a transparent medicinal liquid scale can be set on the barrel of rear cylinder body.

This utility model can be used as the disposable full-automatic syringe of various certain drug, only need open the syringe capping during use just can directly inject voluntarily, user need not the patented technology training, only needing to read operation instructions just can use, because injection needle does not expose, can not cause the feared state of mind during injection to the patient.

Use this syringe to have outstanding advantage in following situation:

1, use in the urgent disease condition of oestrusing, as cardiovascular disease (burst heart infarction), organophosphate poisoning, spray rabies vaccine or tetanus vaccine etc., it is saved time than ordinary syringe, can in time save patient's life;

2, secular chronic disease, as diabetes pancreas type patient, the trouble that can avoid the patient to accept to inject to hospital every day.

Description of drawings

Fig. 1 is the outline drawing of a full-automatic syringe embodiment;

Fig. 2 is the internal structure sketch map of full-automatic syringe;

Fig. 3, Fig. 4 and Fig. 5 are respectively each state diagram that full-automatic syringe carries out injection manipulation.

The specific embodiment

Be described in further detail below in conjunction with the CONSTRUCTED SPECIFICATION of accompanying drawing this utility model embodiment:

As depicted in figs. 1 and 2, cylindrical shell 1 and rear cylinder body 2 before this full-automatic syringe comprises, preceding cylindrical shell 1 is an opaque body, rear cylinder body 2 is provided with a transparent medicinal liquid scale, before fixedly connected by engaging fixture 9 between cylindrical shell 1 and the rear cylinder body 2, be equiped with two sides syringe needle 3 in the preceding cylindrical shell 1, the waist of this two sides syringe needle is fixed on the piston 4, but by passing in the piston 4 pro-cylindrical shells 1, the front inner wall of pro-cylindrical shell 1 is provided with a thrust inward flange 5, this thrust inward flange 5 is a ring-shaped depression, and the front port of pro-cylindrical shell 1 has capping 6; Be equipped with a high pressure medicinal liquid bottle 7 in rear cylinder body 2, the bottleneck of this high pressure medicinal liquid bottle has fluid sealant lid 8, and these bottleneck fluid sealant lid 8 covers are packed in the rear port of placket body 1 and faced the back syringe needle of two sides syringe needle 3.When carrying out injection operation, engage fixture 9 before opening between the capping 6 of cylindrical shell 1 and preceding cylindrical shell 1 and the rear cylinder body 2, as shown in Figure 3; Push rear cylinder body 2 then forward, cylindrical shell 1 before high pressure medicinal liquid bottle 7 is pushed, the back syringe needle of two sides syringe needle 3 penetrate the bottleneck fluid sealant lid 8 of high pressure medicinal liquid bottle 7 earlier, as shown in Figure 4; Continuing to promote rear cylinder body 2 forward moves piston 4, can penetrate the front end bottleneck of cylindrical shell 1 before the preceding syringe needle release of two sides syringe needle 3 patient's injection site, until piston 4 being shifted onto thrust inward flange 5 and being prevented from, as shown in Figure 5, at this moment, the medicinal liquid in the high pressure medicinal liquid bottle will inject in patient's body under the pressure action in bottle voluntarily.Whole injection process can link up and finish rapidly.

Claims

1. full-automatic syringe, it is characterized in that comprising preceding cylindrical shell (1) and rear cylinder body (2), the external diameter of preceding cylindrical shell is more smaller than the internal diameter of rear cylinder body, be provided with a two sides syringe needle (3) along central axis direction in the pro-cylindrical shell (1), but the waist of this two sides syringe needle is fixed on the piston of passing in the pro-cylindrical shell (1) (4), its preceding syringe needle does not expose the end face of preceding cylindrical shell (1) in original state, the front cylinder inwall of cylindrical shell (1) is provided with thrust inward flange (5) before described, and the front port of pro-cylindrical shell (1) is provided with capping (6); Its external diameter is installed less than the internal diameter of preceding cylindrical shell (1) in the described rear cylinder body (2), wherein be packaged with the high pressure medicinal liquid bottle (7) of high-pressure injection medicinal liquid, the main part of this high pressure medicinal liquid bottle (7) is suspended from the axis position of rear cylinder body, fixedlys connected with rear cylinder body (2) in its rear end; The rear end of cylindrical shell (1) is assemblied in the front end of rear cylinder body (2) before described, the front end bottleneck fluid sealant of the high pressure medicinal liquid bottle (7) in the rear cylinder body (2) covers the back syringe needle that (8) are overlapped in the rear port of the placket body (1) of packing into and faced two sides syringe needle (3), and the joint of pro-cylindrical shell (1) and rear cylinder body (2) is equipped with a dismountable joint fixture (9).

2. full-automatic syringe according to claim 1 is characterized in that forming described thrust inward flange (5) by structure one ring-shaped depression on pro-cylindrical shell (1) barrel.

3. full-automatic syringe according to claim 1 is characterized in that described preceding cylindrical shell (1) barrel is an opaque body.

4. full-automatic syringe according to claim 1 is characterized in that described rear cylinder body (2) barrel is provided with a transparent medicinal liquid scale.