CN2750815Y - Disposable safety self-destruction syringe - Google Patents

Disposable safety self-destruction syringe Download PDF

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Publication number
CN2750815Y
CN2750815Y CN 200420122122 CN200420122122U CN2750815Y CN 2750815 Y CN2750815 Y CN 2750815Y CN 200420122122 CN200420122122 CN 200420122122 CN 200420122122 U CN200420122122 U CN 200420122122U CN 2750815 Y CN2750815 Y CN 2750815Y
Authority
CN
China
Prior art keywords
provided
core bar
needle
utility model
needle stand
Prior art date
Application number
CN 200420122122
Other languages
Chinese (zh)
Inventor
吴建中
Original Assignee
吴建中
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 吴建中 filed Critical 吴建中
Priority to CN 200420122122 priority Critical patent/CN2750815Y/en
Application granted granted Critical
Publication of CN2750815Y publication Critical patent/CN2750815Y/en

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Abstract

The utility model relates to a disposable safety self-destruction syringe which is mainly composed of an injection needle (1), a needle seat (2), an outer sleeve (3), a core bar (4) and a piston (5). The utility model is characterized in that the injection needle (1) is connected with the needle seat (2) which is clamped with the outer sleeve (3), the core bar (4) is arranged at the inner part of the outer sleeve (3), and the end head of the core bar (4) is sequentially provided with a back-pull lower buckle (49), an elastic groove (46), a spacing disc (45) and a weak zone (41) and is sheathed with the piston (5); the outer part of the upper part of the needle seat (2) is sequentially provided with a sealing tongue (21) and an elastic groove (26), the middle part of the needle seat (2) is provided with an annular groove (28) and a retreat-stopping acute angle (27), and the lower part of the needle seat (2) is provided with a back-pull upper buckle (29); the outer sleeve (3) is sequentially provided with a small inner diameter (31), an inclined plane (32), a middle inner diameter (33), a big inner diameter (34) and a spacing flange (35). The utility model has the advantages of good safety performance, low requirements of dimensional accuracy and simple assembly.

Description

Disposable safety self-ruined syringe

Technical field

This utility model relates to a kind of disposable safety self-ruined syringe, relates to a kind of disposable safe medical syringe specifically.

Background technology

At present, existing people has developed not the safe re-use preventing once-used syringe with rubber seal, but it exists certain defective.As the cooperate tension of needle stand with syringe part, may cause after injection finishes, can't easily needle stand partly be thrown off, if perhaps needle stand is loose with cooperating of syringe part, then the phenomenon that nature gets loose may take place.In addition, also having some designing requirement part processing precisions very high, therefore is to be difficult to guarantee good qualification rate in actual production, can not guarantee to produce in enormous quantities.Such product serviceability instability exists hidden danger.A kind of simplicity of design of market demand, easy to use, structure cleverly, safety, can produce in batches can be type self-destroyed syringe.

Summary of the invention

The purpose of this utility model is to provide a kind of simple in structure, safe and reliable, disposable safety self-ruined syringe, to overcome the deficiencies in the prior art.

The purpose of this utility model is to realize like this, it is mainly by entry needle (1), needle stand (2), overcoat (3), core bar (4), piston (5) is formed, it is characterized in that: entry needle (1) is connected on the needle stand (2), needle stand (2) is connected on the overcoat (3), the inside of overcoat (3) is provided with core bar (4), be provided with the button (49) of pulling back down on the termination of core bar (4) successively, elastic groove (46), position-arresting disk (45) and weak area (41) also are with piston (5), be provided with sealed tongue (21) outside the top of needle stand (2) successively, elastic groove (26), the middle part is provided with endless groove (28), retaining acute angle (27), the bottom is provided with to pull back goes up button (29), and overcoat (3) is provided with little internal diameter (31) successively, inclined-plane (32), middle internal diameter (33), large diameter (34), defining flange (35).

This utility model compared with prior art, its security performance is good, dimension precision requirement is low, assembles simplyr, be fit to produce in enormous quantities.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the partial enlarged drawing of Fig. 1.

Fig. 3 is the partial enlarged drawing of Fig. 2.

Fig. 4 is the local enlarged diagram that needle stand (2), overcoat (3) assembling do not put in place

Fig. 5 is pull back the down partial enlarged drawing of button (49) of core bar (4) top.

Fig. 6 and Fig. 7 are the structural representations of the form of two kinds of needle stands in addition.

Fig. 8 and Fig. 9 pull back to go up the structural representation that button (29) is located at two kinds of needle stand forms of needle stand.

Figure 10 is the structural representation after this utility model injection finishes.

Figure 11 is the partial enlarged drawing of Figure 10.

Figure 12 is that this utility model injection back core bar pumpback that finishes drives contract sketch map to syringe of needle stand and entry needle.

Figure 13 is the sketch map that this utility model uses the end rear push-rod to fracture.

Figure 14 is the structural representation of another kind of embodiment of the present utility model.

Figure 15 is the partial enlarged drawing of Figure 14.

Wherein: 1, entry needle, 2, needle stand, 3, overcoat, 4, core bar, 5, piston, 21, sealed tongue, 28, endless groove, 26, elastic groove, 27, the retaining acute angle, 29, pull back and go up button, 31, little internal diameter, 32, the inclined-plane, 33, middle internal diameter, 34, large diameter, 35, defining flange, 41, weak area, 45, position-arresting disk, 46, elastic groove, 49, the button of pulling back down

The specific embodiment

Below in conjunction with drawings and Examples this utility model is further specified:

Referring to accompanying drawing, it mainly contains entry needle 1, needle stand 2, overcoat 3, core bar 4, piston 5 compositions this utility model, wherein entry needle 1 is connected on the needle stand 2, and needle stand 2 is connected on the overcoat 3, and the inside of overcoat 3 is provided with core bar 4, the termination of core bar 4 is provided with pulls back down button 49, elastic groove 46, position-arresting disk 45 and weak area 41 and is with piston 5, be provided with sealed tongue 21 outside the top of needle stand 2 successively, elastic groove 26, the middle part is provided with endless groove 28, retaining acute angle 27, bottom are provided with to pull back goes up button 29.When assembling, can pass through middle internal diameter 33 and inclined-plane 32 easily like this,, be compressed to the center by little internal diameter 31 and form sealing when sealed tongue 21 pushes little internal diameter 31.Retaining acute angle 27 angles generally are designed to 30 to 90 degree, because little internal diameters 31 extruding and the dissections of 27 pairs of retaining acute angles, when this injector to inject, can not produce and get loose, and also play the effect of sealing simultaneously.Needle stand 2 of the present utility model can also be designed to the version as Fig. 6, Fig. 7, Fig. 8 and Fig. 9.During use, earlier medicinal liquid is drawn in core bar 4 pumpbacks, after medicinal liquid extracts, promoted core bar 4 forward and implement injection; Shift certain degree of depth onto when core bar 4 and promptly inject when closing to an end, button 49 is engaged to pulling back of needle stand 2 and goes up and buckle in 29 the injection end under the pulling back of core bar 6 upper ends.Then with core bar 4 pumpbacks, core bar 4 just drives needle stand 2, piston 5, entry needle 1, pumpback is in overcoat 3, when the position-arresting disk 45 of core bar 4 is pulled back defining flange 35 to overcoat 3, core bar 4 again can't pumpback, the core bar 4 that fractures at weak area 41 places has then so just been finished use of the present utility model.

Figure 14 is the another kind of by way of example of disposable use self-destroy safety injector of the present utility model.It is characterized in that needle stand 2 lower ends are provided with last 49 (as the versions of Fig. 8 and Fig. 9) of buckleing of pulling back, the upper end of core bar 4 be provided with inward flange pull back down the button 29, pull back when injection finishes and go up button 49 and insert to pull back down and detain 29 and clamped, then with core bar 4 pumpbacks, the continuation pumping-back of core bar 4 drives piston 5, needle stand 2, entry needle 1, pumpback is in overcoat 3.

Claims (1)

1, a kind of disposable safety self-ruined syringe, it is mainly by entry needle (1), needle stand (2), overcoat (3), core bar (4), piston (5) is formed, it is characterized in that entry needle (1) is connected on the needle stand (2), needle stand (2) is connected on the overcoat (3), the inside of overcoat (3) is provided with core bar (4), be provided with the button (49) of pulling back down on the termination of core bar (4) successively, elastic groove (46), position-arresting disk (45) and weak area (41) also are with piston (5), be provided with sealed tongue (21) outside the top of needle stand (2) successively, elastic groove (26), the middle part is provided with endless groove (28), retaining acute angle (27), the bottom is provided with to pull back goes up button (29), and overcoat (3) is provided with little internal diameter (31) successively, inclined-plane (32), middle internal diameter (33), large diameter (34), defining flange (35).
CN 200420122122 2004-12-29 2004-12-29 Disposable safety self-destruction syringe CN2750815Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200420122122 CN2750815Y (en) 2004-12-29 2004-12-29 Disposable safety self-destruction syringe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200420122122 CN2750815Y (en) 2004-12-29 2004-12-29 Disposable safety self-destruction syringe

Publications (1)

Publication Number Publication Date
CN2750815Y true CN2750815Y (en) 2006-01-11

Family

ID=35931999

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200420122122 CN2750815Y (en) 2004-12-29 2004-12-29 Disposable safety self-destruction syringe

Country Status (1)

Country Link
CN (1) CN2750815Y (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102813982A (en) * 2011-06-07 2012-12-12 王祖扬 Inner needle seat structure for safety auto-destruct syringe
WO2012167604A1 (en) * 2011-06-07 2012-12-13 倍安德普医疗科技(上海)有限公司 Safe self-destructive syringe
WO2012167605A1 (en) * 2011-06-07 2012-12-13 倍安德普医疗科技(上海)有限公司 Internal needle seat structure for safe self-destructive syringe
CN102886094A (en) * 2011-07-18 2013-01-23 王祖扬 Needle-replaceable internal needle holder structure for safety self-destructive injector
CN102886089A (en) * 2011-07-18 2013-01-23 王祖扬 Safe self-destroying syringe with changeable needle
WO2013010373A1 (en) * 2011-07-18 2013-01-24 倍安德普医疗科技(上海)有限公司 Safety self-disposable syringe with replaceable needle
WO2013127260A1 (en) * 2012-02-29 2013-09-06 Wang Zuyang Replaceable-needle inner needle base structure for use in safe self-destructing syringe
CN102813982B (en) * 2011-06-07 2016-11-30 王祖扬 A kind of interior needle stand structure for safety self-destructing syringe
US9943650B2 (en) 2012-02-29 2018-04-17 Zuyang Wang Retractable self-destructing safety syringe with pre-attached needle

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102813982A (en) * 2011-06-07 2012-12-12 王祖扬 Inner needle seat structure for safety auto-destruct syringe
WO2012167604A1 (en) * 2011-06-07 2012-12-13 倍安德普医疗科技(上海)有限公司 Safe self-destructive syringe
WO2012167605A1 (en) * 2011-06-07 2012-12-13 倍安德普医疗科技(上海)有限公司 Internal needle seat structure for safe self-destructive syringe
CN102813982B (en) * 2011-06-07 2016-11-30 王祖扬 A kind of interior needle stand structure for safety self-destructing syringe
CN102886094A (en) * 2011-07-18 2013-01-23 王祖扬 Needle-replaceable internal needle holder structure for safety self-destructive injector
CN102886089A (en) * 2011-07-18 2013-01-23 王祖扬 Safe self-destroying syringe with changeable needle
WO2013010373A1 (en) * 2011-07-18 2013-01-24 倍安德普医疗科技(上海)有限公司 Safety self-disposable syringe with replaceable needle
WO2013127260A1 (en) * 2012-02-29 2013-09-06 Wang Zuyang Replaceable-needle inner needle base structure for use in safe self-destructing syringe
US9943650B2 (en) 2012-02-29 2018-04-17 Zuyang Wang Retractable self-destructing safety syringe with pre-attached needle

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GR01 Patent grant
C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee