CN2699916Y

CN2699916Y - Novel aseptic injector

Info

Publication number: CN2699916Y
Application number: CN 200420026443
Authority: CN
Inventors: 胡晓兰
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-04-15
Filing date: 2004-04-15
Publication date: 2005-05-18
Anticipated expiration: 2014-04-15

Abstract

Disclosed is a novel aseptic injector, comprising a needle sleeve (1), a needle, a suction tube (5), a push rod (9), and a medicine storing sacking (4). The needle is composed of a needle point (2) and a needle stand (3) with a cone head. The open end of the medicine storing sacking (4) is tightly sheathed on the cone head of the needle stand (3). One end of the suction tube (5) is provided with a bell mouth (10) where the cone head of the needle stand (3) is inserted. The cone head of the needle stand (3) is tightly matched with the bell mouth (10). A scale is incised on the suction tube (5). The front part of the push rod (9) is inserted in the suction tube (5), and the front end of the push rod (9) is fixedly provided with a rubber seal stand (8). The inner cavity of the suction tube (5) is provided with a rubber indication plate (6) and a spring (7). One end of the spring (7) is fastened on the rubber indication plate (6), and the other end is fastened on the rubber seal stand (8). The periphery of the rubber indication plate (6) is provided with air slots (12). The utility model which has the advantages of cross infection prevention, correct indication, no waste of medicine liquid, low energy consumption, low cost, convenient operation, safety, reliability, good hand feeling, environmental protection, and good popularization value is a tool for injection and medical care.

Description

The abnormity asepsis injector

Technical field

This utility model relates to medical instruments field, specifically, relates to a kind of special-shaped asepsis injector.Be mainly used in veins such as the person, intramuscular injection, skin test, draw blood and make up a prescription.

Background technology

Medical institutions treat patient, commonly vein, intramuscular injection, skin test, draw blood and make up a prescription etc., after use, the inner chamber of syringe contacts with liquid medicine, for fear of cross infection, must not reuse, need disinfect, or use disposable sterilized injector.After disposable syringe uses once just by whole discarded, and can not recycling, existing China regulation very can be burnt, this will consume a large amount of energy, but also can atmosphere pollution.Chinese patent CN2033692U discloses a kind of disposable syringe, disposable syringe is improved, on syringe needle, be set with the capacity bag, with suction tube injection is drawn in the capacity bag by syringe needle, after injection finishes, only throw away syringe needle and capacity bag, and suction tube and push rod can use repeatedly, can prevent cross infection, save raw material again greatly.But also there is following deficiency in this syringe: when suction tube is drawn into injection in the capacity bag, because capacity bag and push rod head have vacuum gap, according to the scale on the suction tube, be difficult to read accurate dose, cause reading inaccurate; In addition, after injection finishes, also leave residual liquid in the capacity bag, cause the waste of medicinal liquid.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, provides a kind of and can not only prevent cross infection, and the reading standard, medicinal liquid does not have the special-shaped asepsis injector of waste.

The technical scheme that realizes above-mentioned purpose is:, a kind of special-shaped asepsis injector, comprise pinhead sleeve, syringe needle, suction tube, push rod and storage medicine bag, syringe needle is made up of needle point and the needle stand with conehead, the storage medicine bag opening tightly be enclosed within needle stand conehead on, one end of suction tube is a horn mouth, the conehead of needle stand is inserted in the horn mouth, and closely cooperate with horn mouth, be carved with scale on the suction tube, the front portion of push rod is inserted in the suction tube, and the front end of push rod is installed with the rubber seal seat, and the suction tube inner chamber is provided with rubber reading sheet and spring, one end of spring is stuck on the rubber reading sheet, and the other end is stuck on the rubber seal seat; The periphery of rubber reading sheet has air drain.

After adopting technique scheme, when extracting medicinal liquid, along with pulling out gradually of push rod, the storage medicine bag enters the suction tube inner chamber under the effect of the suction of vacuum, and constantly expansion, meetings such as medicinal liquid constantly constantly enter the storage medicine bag with the expansion of storage medicine bag, finish until suction, and just can inject this moment.Front end in push rod is installed with the rubber seal seat, and the suction tube inner chamber is provided with rubber reading sheet and spring, and an end of spring is stuck on the rubber reading sheet, and the other end is stuck on the rubber seal seat; The periphery of rubber reading sheet has air drain, the air that reservoir and rubber are read between the sheet can enter between rubber reading sheet and the rubber seal seat by air drain, spring can be according to the volume between rubber reading sheet and the rubber seal seat in the air pressure size adjustment suction tube, thereby there is not vacuum gap between storage medicine bag and the rubber reading sheet, also just can not cause the error of reading, position by rubber reading sheet and the scale on the suction tube can accurately be read the dose in the reservoir.After having injected, same owing to do not have vacuum gap between reservoir and the rubber reading sheet, make the interior no residual liquid of storage medicine bag after inject, thereby can avoid the waste of medicinal liquid.Because the overall process medicinal liquid of suction, injection can not have any contact with suction tube, push rod, rubber reading sheet, rubber seal seat and spring, use the back as long as syringe needle and reservoir are thrown away, need not disinfection and just can avoid cross infection, and suction tube, push rod, rubber reading sheet, rubber seal seat and spring can use repeatedly, save the energy greatly, reduced cost.

Description of drawings

Fig. 1 is a sectional structure sketch map of the present utility model;

Fig. 2 is the structure enlarged diagram of rubber reading sheet among Fig. 1;

Fig. 3 looks sketch map for the left side of Fig. 2;

Fig. 4 is the structural representation of this utility model after finishing aspiration medicinal liquid.

The specific embodiment

Below in conjunction with drawings and Examples this utility model is described in further detail.

As Fig. 1,2,3, shown in 4, a kind of special-shaped asepsis injector, comprise pinhead sleeve 1, syringe needle, suction tube 5, push rod 9 and storage medicine bag 4, syringe needle is made up of needle point 2 and the needle stand 3 with conehead, the opening of storage medicine bag 4 tightly is enclosed within on the conehead of needle stand 3, one end of suction tube 5 is a horn mouth 10, the conehead of needle stand 3 is inserted in the horn mouth 10, and closely cooperate with horn mouth 10, be carved with scale on the suction tube 5, the front portion of push rod 9 is inserted in the suction tube 5, the front end of push rod 9 is installed with rubber seal seat 8, suction tube 5 inner chambers are provided with rubber reading sheet 6 and spring 7, and an end of spring 7 is stuck on the rubber reading sheet 6, and the other end is stuck on the rubber seal seat 8; The periphery of rubber reading sheet 6 has air drain 12.

As shown in Figure 1, have counterbore 11 on the needle stand 3, the part beyond the opening of storage medicine bag 4 is positioned at the counterbore 11 of needle stand 3.Storage medicine bag 4 can suck in the counterbore 11 of needle stand 3 in advance by the method for evacuation, can prevent to store medicine bag 4 and damage, and not influence in the conehead insertion horn mouth 10 of needle stand 3.

Storage medicine bag 4 can be made with natural emulsion, and the coefficient of expansion of natural emulsion can reach 1: 500.Can satisfy the requirement of storage medicinal liquid fully.

Shown in Fig. 2,3, air drain 12 has three, and is evenly distributed on the periphery of rubber reading sheet 6.Adopt this structure can get rid of the vacuum of storing in suction tube 5 inner chambers between medicine bag 4 and the rubber reading sheet 6 smoothly.Prevent to store to be full of in the medicine bag 4 and stop up air drain 12 behind the medicinal liquid.

The outer wall of the conehead of the inwall of horn mouth 10 and needle stand 3 all adopts 6: 100 tapering.Installing had both conveniently had firmly, can guarantee best combination power.

Use of the present utility model is as follows: as Fig. 1, shown in 4, before the use, as long as the conehead of needle stand 3 is inserted in the horn mouth 10 of suction tube 5, the needle stand 3 that has needle point 2 and storage medicine bag 4 this moment just becomes one with suction tube 5, during use, along with pulling out gradually of push rod 9, latex storage medicine bag 4 can plough under suction tube 5 inner chambers automatically from the counterbore 11 of needle stand 3 under the effect of the suction of vacuum, medicinal liquid enters in the storage medicine bag 4 simultaneously, along with further pulling out of push rod 9, medicinal liquid can constantly be accompanied by the continuous expansion of storage medicine bag 4 and constantly enter, and finishes until suction, by the scale of carving on rubber reading sheet 6 and the suction tube 5, can read the dose of suction exactly.Just can inject this moment, after injection finished, storage medicine bag 4 can automatically enter again under the effect of the pressure of push rod 9 in the counterbore 11 of needle stand 3, and as long as this moment is with needle stand 3 rotations 15 degree, the horn mouth 10 of needle stand 3 from suction tube 5 taken off, throw in the special-purpose refuse bin.This shows, the overall process herb liquid of suction, injection can not have any contact with suction tube 5, push rod 9, spring 7, rubber reading sheet 6 and rubber seal seat 8, therefore above-mentioned part does not need disinfection, just can avoid cross infection, can be used as secular injection tool and uses.Depleted only is needle stand 3, very little parts such as storage medicine bag 4, needle point 2 and pinhead sleeve 1, and expending is 5% of the present plastic injector for temporary use that uses, has saved cost greatly.

Suction tube 5 of the present utility model adopts medical hard glass, and transparency is good, and is smooth, and 8 very little frictions of generation of seal receptacle that it and natural rubber are made are durable in use.

This utility model is a kind of low energy consumption, low cost, easy to operate, safe and reliable, good hand touch, the injection medical instrument very favourable to environmental conservation, has excellent generalization values.

Claims

1, a kind of special-shaped asepsis injector, comprise pinhead sleeve (1), syringe needle, suction tube (5), push rod (9) and storage medicine bag (4), syringe needle is made up of needle point (2) and needle stand (3) with conehead, the opening of storage medicine bag (4) tightly is enclosed within on the conehead of needle stand (3), and an end of suction tube (5) is horn mouth (10), and the conehead of needle stand (3) is inserted in the horn mouth (10), and closely cooperate with horn mouth (10), suction tube is carved with scale on (5), and the front portion of push rod (9) is inserted in the suction tube (5), it is characterized in that:

The front end of a, push rod (9) is installed with rubber seal seat (8), and suction tube (5) inner chamber is provided with rubber reading sheet (6) and spring (7), and an end of spring (7) is stuck on the rubber reading sheet (6), and the other end is stuck on the rubber seal seat (8);

The periphery of b, rubber reading sheet (6) has air drain (12).

2, special-shaped asepsis injector according to claim 1 is characterized in that: have counterbore (11) on the needle stand (3), the part beyond the opening of storage medicine bag (4) is positioned at the counterbore (11) of needle stand (3).

3, special-shaped asepsis injector according to claim 1 and 2 is characterized in that: storage medicine bag (4) is made by natural emulsion.

4, special-shaped asepsis injector according to claim 1 and 2 is characterized in that: air drain (12) has three, and is evenly distributed on the periphery of rubber reading sheet (6).

5, special-shaped asepsis injector according to claim 1 and 2 is characterized in that: the outer wall of the conehead of the inwall of horn mouth (10) and needle stand (3) all adopts 6: 100 tapering.