CN202654501U

CN202654501U - Push-out self-destruction type syringe

Info

Publication number: CN202654501U
Application number: CN 201220195645
Authority: CN
Inventors: 蔡根顺
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-05-03
Filing date: 2012-05-03
Publication date: 2013-01-09
Anticipated expiration: 2022-05-03

Abstract

The utility model belongs to the technical field of a disposable syringe, and particularly relates to a push-out self-destruction type syringe. The push-out self-destruction type syringe comprises an injection tube, an injection rod, a needle seat and a needle head fixed on the needle seat. The needle seat is provided with a liquid-passing hole, wherein the liquid-passing hole is communicated with the needle head and the injection tube. A piston is arranged at the upper end of the injection rod in a sleeved mode. A circular recessed groove is molded on an inner wall of the end portion of the injection tube, wherein the injection tube is connected with the needle seat. A convex rib is molded at the lower end of the needle seat, wherein the convex rib is matched with the recessed groove in a clamping mode. The needle seat at the lower side of the convex rib is provided with a sealing ring which is closely attached to the inner wall of the injection tube. The push-out self-destruction type syringe has the advantages that the novel injection tube is matched with the needle seat in a mutually clamping mode and the push-out self-destruction type syringe utilizes a twice push-out self-destruction mode. Namely the injection rod pushes the needle seat first, and then pushes the sealing ring out. Medical workers only need to apply less force on the injection rod, and then the syringe can be self-destructed. The push-out self-destruction type syringe is simple in structure and easy and convenient to operate. A reinforced rib is molded on a finger supporting portion of the injection tube, wherein the reinforced rib is of heart shape or of apple shape, and has a beautiful appearance and comfortable touch, and the push-out self-destruction type syringe is suitable for the medical workers to use.

Description

A kind of self-destruction syringe that ejects

Technical field

This utility model belongs to disposable injector technology field, refers in particular to a kind of self-destruction syringe that ejects.

Background technology

Along with the progress of society, people are more and more higher to the requirement of medical treatment, and also in constantly innovation and improvement, especially the improvement aspect syringe is greatly improved medical apparatus and instruments.At present, plastic injector for temporary use is used widely.General disposable syringe is just discarded after using once, thereby can prevent syringe from reusing and cause viral communication, safer health.But disposable syringe in the market uses trouble, and can not realize complete self-destruction because structural design is comparatively complicated, and production cost is higher, is unfavorable for promoting.

Summary of the invention

The purpose of this utility model provides the problem that the existing disposable syringe of a kind of customer service exists, and proposes a kind of reasonable in designly, easy to use and cost is lower, is beneficial to the self-destruction syringe that ejects of popularization.

The purpose of this utility model is achieved in that a kind of self-destruction syringe that ejects, comprise injection tube, injection rod, needle stand and the syringe needle that is fixed on the needle stand, be provided with the liquid-through hole that is communicated with syringe needle and injection tube on the needle stand, the upper end of injection rod is provided with piston, form the groove of annular on the inner wall of end of the injection tube of connection needle stand, the lower end of needle stand forms the convex tendon that cooperates with described groove clamping, be arranged with the sealing ring of being close to the injection tube inwall on the needle stand of convex tendon downside, the middle part of injection rod upper end is provided with columnar projections, the middle part of columnar projections forms bulge loop, be connected with movable sleeve on the columnar projections on the bulge loop, be set with catch on the columnar projections between movable sleeve and the bulge loop, the movable sleeve arranged outside has described piston, and the inside of piston is provided with the cavity that stretches out top land when the piston stress deformation for injection rod.

Form on the inwall of the injection tube of above-mentioned groove downside with the upper edge of sealing ring and cooperate spacing upper limit bulge loop.

Form on the inwall of the injection tube of above-mentioned position limiting convex ring downside with the lower edge of sealing ring and cooperate spacing lower limit bulge loop.

The finger holder section of above-mentioned injection tube lower end forms the reinforcement of heart or apple shape profile.

This utility model compared to existing technology outstanding and useful technique effect is: the mutual clamping of injection tube of the present utility model and needle stand cooperates, and the sealing ring that passes through the needle stand bottom seals, injecting complete rear needs certain with injection rod being applied again, can easily needle stand be ejected injection tube, to realize the self-destruction of syringe; This device adopts the mode of Double-ejection, and namely injection rod ejects first needle stand, ejects sealing ring again, and medical personnel only need injection rod is applied less power, just can make the syringe self-destruction, and it is rational in infrastructure, easy and simple to handle; The finger holder section of injection tube forms the reinforcement that increases the intensity that refers to holder section, outline heart or the apple shape of reinforcement, and it is handsome in appearance, and medical personnel use good hand touch; Of the present utility model rational in infrastructure, production cost is lower, it is convenient to reclaim after product uses, and is easier to promote, and is fit to medical personnel and uses.

Description of drawings

Fig. 1 is each exploded view of the first embodiment of the present utility model.

Fig. 2 is the structure diagram of the first embodiment of the present utility model.

Fig. 3 is the A place enlarged drawing of Fig. 1.

Fig. 4 is the B place enlarged drawing of Fig. 2.

Sketch map when Fig. 5 is the preparation self-destruction of this utility model the first embodiment.

Fig. 6 is the sketch map after Fig. 5 self-destruction.

Fig. 7 is the injection tube of the second embodiment of the present utility model and the sketch map of needle stand.

Fig. 8 is the sketch map of the second embodiment of the present utility model when preparing self-destruction.

Fig. 9 and Figure 10 are respectively the C-C view of the injection tube of two kinds of different structures among Fig. 2.

Among the figure: 1, sheath; 2, syringe needle; 3, needle stand; 4, injection tube; 5, sealing ring; 6, piston; 7, movable sleeve; 8, back-up ring; 9, injection rod; 31, convex tendon; 41, refer to holder section; 42, groove; 43, upper limit bulge loop; 44, sealing ring installation portion; 45, lower limit bulge loop; 46, needle stand installation portion; 61, cavity; 91, columnar projections; 411, reinforcement; 910, bulge loop.

The specific embodiment

This utility model is further described with specific embodiment below in conjunction with accompanying drawing, referring to Fig. 1-10;

Embodiment 1, shown in Fig. 1-6, a kind of self-destruction syringe that ejects, comprise injection tube 4, injection rod 9, needle stand 3 and the syringe needle 2 that is fixed on the needle stand 3, be provided with the liquid-through hole that is communicated with syringe needle 2 and injection tube 4 on the needle stand 3, the upper end of injection rod 9 is provided with piston 6, form the groove 42 of annular on the inner wall of end of the injection tube 4 of connection needle stand 3, the lower end of needle stand 3 forms the convex tendon 31 that cooperates with described groove 42 clampings, be arranged with the sealing ring 5 of being close to injection tube 4 inwalls on the needle stand 3 of convex tendon 31 downsides, when sealing ring 5 had guaranteed injection, medicinal liquid can not ooze out the outside by the fit clearance of needle stand 3 and injection tube 4.

The middle part of above-mentioned injection rod 9 upper ends is provided with columnar projections 91, the middle part of columnar projections 91 forms on the columnar projections 91 on bulge loop 910, the bulge loop 910 and is connected with movable sleeve 7, be set with catch 8 on the columnar projections 91 between movable sleeve 7 and the bulge loop 910, movable sleeve 7 arranged outside have described piston 6, and the inside of piston 6 is provided with when piston 6 stress deformation stretches out the cavity 61 at piston 6 tops for injection rod 9.

Form on the inwall of the injection tube 4 of above-mentioned groove 42 downsides with the upper edge of sealing ring 5 and cooperate spacing upper limit bulge loop 43.

In the present embodiment, the leading section of injection tube 4 is through-type, the front and back ends bore is identical, and leading section need not radially to inside contract and forms the needle stand installation portion, and injection tube processing of the present utility model is simple, molding is easy, and compare traditional injection tube, with under the equal-specification, materials are less, during production in enormous quantities, cost obviously reduces.

Operation principle of the present utility model: medical personnel use this syringe in a traditional way, complete (to state shown in Fig. 5 to injecting liquid drug, medicinal liquid is injected complete fully), at this moment, the lower end of the upper end Contact Seal ring 5 of piston 6 (piston 6 is not out of shape), medical personnel back off syringe from human body, and the syringe needle 2 of syringe aimed at toilet pail, then, with applying certain power to injection rod 9, at this moment, catch 8 stressed relative injection rods 9 move down, and behind the bulge loop 910 at columnar projections 91 middle parts by injection rod 9 upper ends, injection rod 9 makes movable sleeve 7 ends stretch out piston 6 and holds out against bottom at needle stand 3 (catch 8 is during by bulge loop 910, injection rod 9 is gone up top piston 6 and movable sleeve 7 simultaneously by catch 8), movable sleeve 7 is jack-up needle stand 3 upwards, needle stand 3 breaks away from injection tube 4 (sealing ring 5 maintenance original positions this moment), make injection rod 9 by piston 6 sealing ring 5 be ejected (as shown in Figure 6 state) from the upper end of injection tube 4 with the larger injection rod 9 of trying hard to recommend again, so far, the complete self-destruction of syringe.

Embodiment 2, as shown in Figure 7 and Figure 8, present embodiment and embodiment 1 are basic identical, its difference is: the upper end of injection tube 4 radially inside contracts and forms needle stand installation portion 46, form groove 42 on the upper end inwall of needle stand installation portion 46, form the convex tendon 31 that cooperates with groove 42 clampings on the needle stand 3, the bottom of needle stand 3 is arranged with sealing ring 5, on the sealing ring 5, (43 is the upper limit bulge loop to the position limiting convex ring of downside, 45 for the lower limit bulge loop) all be molded on the inwall of needle stand installation portion 46 of injection tube, the needle stand 3 of present embodiment can be injected bar 9 and eject injection tube 4, and sealing ring 5 then can not be ejected (shape of upper limit bulge loop 43 determines that can sealing ring 5 be ejected injection tube 4).

Such as Fig. 9, shown in Figure 10, the finger holder section 41 of injection tube 4 lower ends forms the reinforcement 411 of heart or apple shape outline, the finger that reinforcement 411 has strengthened injection tube 4 is opened up the intensity of section 41, and so that injection tube 4 has more aesthetic, feel was better when medical personnel used.

Above-described embodiment is preferred embodiment of the present utility model only, is not to limit according to this protection domain of the present utility model, so: all equivalences of doing according to structure of the present utility model, shape, principle change, and all should be covered by within the protection domain of the present utility model.

Claims

1. one kind ejects self-destruction syringe, comprise injection tube, injection rod, needle stand and the syringe needle that is fixed on the needle stand, be provided with the liquid-through hole that is communicated with syringe needle and injection tube on the needle stand, the upper end of injection rod is provided with piston, it is characterized in that: the groove that forms annular on the inner wall of end of the injection tube of connection needle stand, the lower end of needle stand forms the convex tendon that cooperates with described groove clamping, be arranged with the sealing ring of being close to the injection tube inwall on the needle stand of convex tendon downside, the middle part of injection rod upper end is provided with columnar projections, the middle part of columnar projections forms bulge loop, be connected with movable sleeve on the columnar projections on the bulge loop, be set with catch on the columnar projections between movable sleeve and the bulge loop, the movable sleeve arranged outside has described piston, and the inside of piston is provided with the cavity that stretches out top land when the piston stress deformation for injection rod.

2. a kind of self-destruction syringe that ejects according to claim 1 is characterized in that: form upper along cooperating spacing upper limit bulge loop with sealing ring on the inwall of the injection tube of described groove downside.

3. a kind of self-destruction syringe that ejects according to claim 2 is characterized in that: form lower to cooperating spacing lower limit bulge loop with sealing ring on the inwall of the injection tube of described position limiting convex ring downside.

4. a kind of self-destruction syringe that ejects according to claim 1, it is characterized in that: the finger holder section of described injection tube lower end forms the reinforcement of heart-shaped profile.