CN202198928U

CN202198928U - Disposable safety self-destructive needle cylinder

Info

Publication number: CN202198928U
Application number: CN2011202971223U
Authority: CN
Inventors: 吕学荣; 蔡金树
Original assignee: TSAI SHYH ENTERPRISES CO Ltd
Current assignee: TSAI SHYH ENTERPRISES CO Ltd
Priority date: 2011-08-16
Filing date: 2011-08-16
Publication date: 2012-04-25
Anticipated expiration: 2021-08-16

Abstract

A disposable safety self-destructive needle cylinder comprises a push rod and a needle cylinder body, wherein a piston is sleeved at one end of the push rod; an elastic bulged column is combined in the piston, and the front end of the bulged column bulges out of the top surface of the piston by a certain distance; the needle cylinder body is provided with one front end and one rear end, wherein the front end is used for injection after the push rod is placed in the front end, and the rear end reduces inwards to form a socket part combined with a needle head; a clamping part is arranged on the inner wall of the socket part, so that when the push rod is pushed to the position near to the rear end of the needle cylinder body, the front end of the bulged column can enter the socket part to be limited by the clamping part on the inner wall of the socket part and also be limited in the socket part; the bulged column is provided with at least one through hole to buffer the force generated when the front end of the bulged column enters the socket part, and when being pulled back, the push rod can be separated from the piston to be taken out.

Description

The disposable safety self-breaking syringe

Technical field

This utility model can effectively reduce the disposable safety self-breaking syringe that causes injection residual quantity in sufferer pain and the syringe because of the application of force in when injection about a kind of.

Background technology

Press, at present syringe or the syringe used of subcutaneous injection has been widely used in medical field, usually syringe for once use, with after promptly lose; Not only convenient and healthy but also can avoid disease to infect by syringe needle, yet being exposed to outer syringe needle, depleted syringe accidentally just possibly stab medical personnel, produce wound or communicate illness; And if discarded syringe is not dealt carefully with; Arbitrarily throw aside in environment, its sharp-pointed syringe needle also can be stabbed other people, for the environmental protection personnel that handle Biohazard Waste; Also possibly be the victim of discarded syringe needle, therefore the generation of various safety injector is arranged then.

See also Fig. 7, it shows the structure of existing a kind of safety syringe-drum, and wherein plunger a can spur or promote in front and back in syringe b, and the front end of plunger a is provided with piston c and hook portion d, and hook portion d is based in outside the piston c front end end face.The bottom of syringe needle e then is provided with convergence part f, and when plunger a shifted the summit onto forward, hook portion d can lunge among the f of convergence part and tie state with its formation hook.

Yet, in the latter end process of injection, make to reach and be connected bonded resistance in order to shift piston c onto the end, promote plunger a hook portion d is combined with convergence part f just must bestow a certain size above strength, this strength will cause the pain of sufferer.In addition; After even piston c shifts the end onto, still can injection residually be arranged between syringe b and the syringe needle e, that is to say that the healthcare givers must increase the extraction amount of liquid medicine when extracting medicament; Make medical effect give a discount to avoid underdosage; In case healthcare givers's carelessness simultaneously causes the deficiency of pharmaceutical quantities, has also reduced medical effect, and will influence the development of the state of an illness.

Summary of the invention

The main purpose of this utility model can effectively reduce the disposable safety self-breaking syringe that causes the sufferer pain because of the application of force in when injection providing a kind of.

The secondary objective of this utility model is providing a kind of disposable safety self-breaking syringe that can effectively reduce the residual quantity of injection in the syringe.

For reaching above-mentioned purpose, a kind of disposable safety self-breaking syringe that this utility model is set comprises a push rod and a syringe stack shell.Wherein this push rod one end is sheathed with a piston, and is combined with a rubber-like protruded stigma in this piston, and outstanding this piston-top surface of this protruded stigma front end has a distance; This syringe stack shell has forward and backward two ends, and wherein front end is injected after supplying push rod to insert, and inside directly the contracting in rear end forms the bonded receptacle portion of a confession syringe needle; And this receptacle portion inwall then is provided with a card division; When making push rod be pulled near syringe stack shell rear end, this protruded stigma front end can get into receptacle portion and be subject to the card division of receptacle portion inwall, and is limited in the receptacle portion; And this protruded stigma is provided with at least one perforation; Strength when making buffering protruded stigma front end get into receptacle portion, and when pulling back this push rod, this push rod can break away from piston and take out.

During enforcement, this protruded stigma end is provided with and supplies this protruded stigma to be sticked in the alar part in the piston.

During enforcement, this protruded stigma front end is made as taper.

During enforcement, this protruded stigma front end extends upward and is formed with a microscler cylinder.

During enforcement, this piston and protruded stigma all are made up of the rubber-like material.

For further understanding this utility model, below lift preferred embodiment, conjunction with figs., figure number specify concrete constitution content of this utility model and the effect of being reached thereof as the back:

Description of drawings

Fig. 1 makes up preceding schematic perspective view for this utility model embodiment.

Fig. 2 is the schematic perspective view after this utility model embodiment combination.

Fig. 3 is the view when the protruded stigma front end gets into receptacle portion among this utility model embodiment.

Fig. 4 is the view after the protruded stigma front end entering receptacle portion among this utility model embodiment.

View when Fig. 5 takes out for this utility model embodiment push rod disengaging piston.

Fig. 6 is the three-dimensional appearance sketch map of protruded stigma among another embodiment of this utility model.

Fig. 7 is the structural representation of existing safety syringe-drum.

[main element symbol description]

1: push rod

2: the syringe stack shell

21: front end

22: the rear end

221: receptacle portion

222: the card division

3: piston

4: protruded stigma

41: alar part

42: perforation

43: microscler cylinder

A: plunger

B: syringe

C: piston

D: hook portion

E: syringe needle

F: convergence part

The specific embodiment

For letting the above-mentioned of this utility model and other purpose, characteristic and the advantage can be more obviously understandable, the special preferred embodiment of lifting this utility model of hereinafter, and conjunction with figs. elaborate as follows:

See also Fig. 1-5, be an embodiment of this utility model disposable safety self-breaking syringe, it is made up of a

push rod

1 and 2 of syringe stack shells.

These push rod 1 one ends are sheathed with one and have the made piston of elastic material 3; Has the made protruded stigma of elastic material 4 and be combined with one in this piston 3; And these protruded stigma 4 front ends are made as taper; Its outstanding these piston 3 end faces have a distance, and wherein these protruded stigma 4 ends are provided with and supply to be sticked in the alar part 41 in the piston 3, and protruded stigma 4 is provided with at least one perforation 42.

This syringe stack shell 2 has forward and backward two

ends

21,22, and wherein front end 21 is injected after supplying push rods 1 to insert, and contracts to internal diameter and form one and supply the bonded receptacle portion 221 of syringe needle in rear end 22, and these receptacle portion 221 inwalls then are provided with a card division 222.

When therefore implementing, shown in Fig. 3-5, when injection medicament; When promoting these push rod 1 to syringe stack shell 2 rear ends 22, these protruded stigma 4 front ends can be subject to the card division 222 of receptacle portion 221 inwalls after getting into receptacle portion 221 because of stressed, and are restricted in the receptacle portion 221; Simultaneously, this protruded stigma 4 is when stressed, because protruded stigma 4 is provided with at least one perforation 42; Be out of shape the strength when getting into receptacle portion 221 with buffering protruded stigma 4 front ends so as to making this protruded stigma 4 can be pushed compression.When injection finishes will discard the time; Because protruded stigma 4 front ends have been restricted in the receptacle portion 221 and can't have withdrawed from; Therefore when pulling back this push rod 1; Because push rod 1 and piston 3 are merely the design of fit, thus the strength that this push rod 1 can be pulled back immediately disengaging piston 3 and take out (as shown in Figure 5), and syringe stack shell 2 can carry out follow-up destroying together with syringe needle.

In addition; As shown in Figure 6, these protruded stigma 4 front ends extend upward and are formed with a microscler cylinder 43, so be pulled to near syringe stack shell 2 rear ends the time when protruded stigma 4; The microscler cylinder 43 of these protruded stigma 4 front ends can be deeply to the needle stand volume inside, thereby more reduces the residual quantity of injection.

Therefore, the utlity model has following advantage:

This utility model is provided with at least one perforation in protruded stigma, is out of shape so as to making this protruded stigma can be pushed compression, and the strength when getting into receptacle portion with buffering protruded stigma front end effectively reduces the problem that causes the sufferer pain because of the application of force.

This utility model can extend upward in the protruded stigma front end and be formed with a microscler cylinder, and making can be deeply to the needle stand volume inside, thereby more reduces the residual quantity of injection.

After this utility model disposable safety self-breaking syringe used, push rod can be pulled back the disengaging piston and left syringe, can recycle utilization again, effectively reduced the waste material generation and reduced cost.

The above is specific embodiment of this utility model and the technological means of being used; Can derive according to the exposure of this paper or instruction and to derive many changes and correction; If the equivalence of doing according to the conception of this utility model changes; When the effect that it produced does not exceed the connotation that description and accompanying drawing contain yet, all should be regarded as within the technological category of this utility model, closing first Chen Ming.

According to the content that preceding text disclosed, this utility model really can reach the intended purposes of creation, and a kind of disposable safety self-breaking syringe is provided, and has industry utilization and practical value undoubtedly.

Claims

1. disposable safety self-breaking syringe, it comprises:

A push rod, one of which end are sheathed with a piston, and are combined with a rubber-like protruded stigma in this piston, and this protruded stigma front end protrudes in this piston-top surface a distance is arranged;

A syringe stack shell has forward and backward two ends, and this front end can supply push rod to insert to inject; And inside directly the contracting in rear end forms a bonded receptacle portion of confession syringe needle; And this receptacle portion inwall is provided with a card division, and when push rod was pulled near syringe stack shell rear end, this protruded stigma front end can get into receptacle portion and be subject to the card division of receptacle portion inwall; And this protruded stigma is restricted in the receptacle portion, it is characterized in that:

The perforation of strength when this protruded stigma is provided with at least one so as to buffering protruded stigma front end entering receptacle portion.

2. disposable safety self-breaking syringe as claimed in claim 1 is characterized in that, this protruded stigma end is provided with and supplies this protruded stigma to be sticked in the alar part in the piston.

3. disposable safety self-breaking syringe as claimed in claim 1 is characterized in that, this protruded stigma front end is taper.

4. like claim 1 or 3 described disposable safety self-breaking syringes, it is characterized in that this protruded stigma front end extends upward and is formed with a microscler cylinder.

5. disposable safety self-breaking syringe as claimed in claim 1 is characterized in that this piston and protruded stigma all are made up of elastic material.