CN2863144Y - Safe self-destruction medical syringe - Google Patents
Safe self-destruction medical syringe Download PDFInfo
- Publication number
- CN2863144Y CN2863144Y CN 200520134345 CN200520134345U CN2863144Y CN 2863144 Y CN2863144 Y CN 2863144Y CN 200520134345 CN200520134345 CN 200520134345 CN 200520134345 U CN200520134345 U CN 200520134345U CN 2863144 Y CN2863144 Y CN 2863144Y
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- CN
- China
- Prior art keywords
- syringe
- collar
- needle stand
- core bar
- destruction
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a medical injector comprising a hollow needle cylinder, a needle base mounted at the head of the needle cylinder, an annular clamping ring at the bottom of the needle cylinder, a core rod in the cylinder and a sheath at the head of the cylinder, while the head of the core rod is provided with a rubber plug. The utility model is characterized in that the upper part of the base is provided with an outer flange engaged with the upper cam of the inner hole of the cylinder, and the base contains a clamping ring whose circumference is tightly engaged with the inner hole of the base. The needlepoint of the utility model will move back into the cylinder after injection to destroy the core rod automatically, thereby avoiding repeatedly the using of the injector and supporting the transmission and destroy of waste injectors.
Description
Technical field
This utility model relates to a kind of injector for medical purpose, and especially a kind of injection syringe needle that finishes can return back to safe self-destruction syringe for medical purpose in the syringe.
Background technology
Facts have proved of modern medicine, for avoiding to the input of the mankind or animal or cross infection takes place when taking out medium, hypodermic syringe must disposable use, is using later promptly as garbage disposal.Using at present maximum disposable syringes is one by the cavity syringe, syringe needle and the journey piston of deciding that is fitted in the syringe are formed, the existing greatest problem of this syringe is after injection finishes, its syringe needle still is trapped in the outside, sharp-pointed degree with respect to syringe needle, it not only is the carrying of syringe rubbish, destroying makes troubles, often take place because of the thing of stabbing the medical and nursing work personnel accidentally simultaneously, this the secondary cross infection of pathogenic bacteria just inevitably can occur, particularly be used to suffer from serious infectious disease (as acquired immune deficiency syndrome (AIDS) for those, hepatitis, SARS etc.) syringe of patient's use, the medical hidden danger that can not ignore especially, practice shows, the damage that the needle stick injuries that dangerous self-destruction needle set causes obviously causes more than other accidents.
The utility model content
The purpose of this utility model is to provide a kind of safe self-breaking syringe, finish the back retractable needle in syringe in injection, and can realize the self-destruction of core bar, the repeated use of fundamentally having stopped syringe also is convenient to the carrying of syringe rubbish simultaneously and is destroyed.
For achieving the above object, this utility model is by the following technical solutions:
A kind of safe self-destruction syringe for medical purpose, comprise a hollow barrel, one is installed in the needle stand of syringe head, one is installed in the annular screens circle of syringe bottom, one is installed in the sheath that the interior core bar and of syringe is installed in the syringe head, described core bar head is provided with a plug, it is characterized in that: the endoporus upper boss that the needle stand middle and upper part is provided with an outward flange and syringe fastens; One collar is installed in the needle stand, and the collar cylindrical closely engages with the endoporus of needle stand.
The cylindrical wall of above-mentioned needle stand and the inner round wall of syringe fit tightly, the pit of the inside molding one waist drum toroidal of needle stand, the top of pit forms the right angle end face, itself and the top end face of collar butt mutually, the pit bottom forms a transition inclined-plane, and the bottom face of itself and collar fastens; Transition inclined-plane of described outward flange bottom molding, the upper surface of the boss on itself and syringe endoporus top is superimposed.
Above-mentioned needle stand arm and syringe transition position are installed one " O " RunddichtringO.
It is one that above-mentioned collar packs that the needle stand endoporus engages with it into, and its top forms a plurality of elasticity support claws that can fasten with the spherical boss of core bar head.
Above-mentioned annular screens circle is a landolsring, and its outside forms two boss, and its head sets up a plurality of elasticity Convex chucks, the inboard bottom face of Convex chuck be shaped as square, the plane that is shaped as of Convex chuck top end face is connected with chamfered transition.
The bottom inside of above-mentioned syringe forms two grooves, and it closely engages with two outer lug boss of annular screens circle respectively.
The top of above-mentioned core bar is provided with the spherical boss that can fasten with the elasticity support claw of collar; Core bar top is provided with the collar that can fasten with the inboard bottom face and the top end face of annular screens circle elasticity Convex chuck, and is provided with an easily broken place in the collar bottom.
Above-mentioned core bar bottom is provided with through hole, and a backing pin with matching is set on the through hole.
Needle stand in this utility model and collar fasten behind the syringe of packing into and are one, after liquid infusion finishes, the spherical boss at core bar top and the elasticity support claw of collar are stuck, when continuing to pull back core bar, just make collar drive needle stand, needle stand is broken away from the mutually close-fitting boss of syringe to move to the bottom of syringe, corresponding the fastening of elasticity Convex chuck of the annular screens circle of the collar on core bar bottom being arranged on syringe, core bar can not be extracted out, can not before push away, the locked bottom to syringe of the head of core bar, this moment, whole syringe needle and needle stand were reduced to the syringe the inside in fully, realized the self-destruction of contracting in the syringe needle.Slightly firmly it is fractureed or break from core bar easily broken at last, realize the self-destruction of core bar.
In addition, " O " RunddichtringO that needle stand arm and syringe transition position are installed makes that needle stand guarantees good sealing function is arranged behind the syringe of packing into, and the screens circle that is arranged on bottom the syringe adopts landolsring, a port is set up in its outside, and the syringe bottom of being convenient to easily pack into is an one with its card.In addition, the backing pin that the core bar bottom is provided with plays position-limiting action in the transportation of syringe with before using, and can prevent self-destruction in advance.
In a word, this utility model finishes the back retractable needle in syringe in injection, and can realize the self-destruction of core bar, the repeated use of fundamentally having stopped syringe, and the while also is convenient to the carrying of syringe rubbish and destroys.
Description of drawings
Fig. 1, planar structure cutaway view of the present utility model;
The planar structure cutaway view of Fig. 2, this utility model needle stand;
The planar structure cutaway view of Fig. 3, this utility model collar;
The planar structure cutaway view of Fig. 4, this utility model annular screens circle;
The planar structure cutaway view of Fig. 5, this utility model syringe;
The planar structure cutaway view of Fig. 6, this utility model core bar;
The planar structure cutaway view that Fig. 7, this utility model drawing liquid finish;
The planar structure cutaway view that Fig. 8, this utility model liquid infusion finish;
The planar structure cutaway view of Fig. 9, this utility model self-destruction first step;
The planar structure cutaway view that Figure 10, this utility model self-destruction finish.
The specific embodiment:
As shown in Figure 1, a kind of safe self-destruction syringe for medical purpose, comprise a hollow barrel 1, one is installed in the needle stand 5 of syringe 1 head, one is installed in the annular screens circle 6 of syringe 1 bottom, one core bar 2 and that is installed in syringe 1 inner chamber is installed in the outer sheath 7 of syringe 1 head, and core bar 2 heads are provided with a plug 9.
Shown in Fig. 1,2,3 and 5, the cylindrical wall of needle stand 5 and the inner round wall of syringe 1 fit tightly, the pit 51 of the inside molding one waist drum toroidal of needle stand 5, be equipped with a collar 4 on the pit 51, both are one at i.e. engaging behind the syringe 1 of packing into, the top end face 42 that the top of its pits 51 forms right angle end face 511 and collar 4 is butt mutually, and the bottom face 43 that pit 51 bottoms form a transition inclined-plane 512 and collar 4 fastens.The endoporus upper boss 13 that described needle stand 5 middle and upper parts are provided with an outward flange 52 and syringe 1 fastens, and avoids that needle stand 5 rotates when injection is used, and alleviates patient's misery; Transition inclined-plane 521 of outward flange 52 bottom molding, the upper surface 131 of the boss 13 on itself and syringe 1 endoporus top is superimposed, and for needle stand 5 provides certain support force when injection is used, avoiding contracting in the needle stand 5 causes self-destruction in advance.In addition, one " O " RunddichtringO 8 is installed, is made needle stand behind the syringe of packing into, guarantee to have good sealing function at needle stand 5 arms and syringe 1 transition position.Described collar 4 cylindricals closely engage with pit 51 medial walls, and collar 4 tops form a plurality of elasticity support claws 41 that can fasten with the spherical boss 21 of core bar 2 heads.
As shown in Figure 4, annular screens circle 6 is a landolsring, and a port is set up in its outside, and be convenient to easily pack into syringe 1 bottom and its card are one.Annular screens circle 6 lateral walls form two boss 61,62, and head sets up a plurality of elasticity Convex chucks 63, Convex chuck 63 inboard bottom faces 631 be shaped as square, the plane that is shaped as of Convex chuck 63 top end faces 632 is connected with chamfered transition.
As shown in Figure 5, the bottom inside of syringe 1 forms two grooves 11,12, and it closely engages with the outer lug boss 61,62 of annular screens circle 6 respectively.
As shown in Figure 6, the top of core bar 2 is provided with the spherical boss 21 that can fasten with the elasticity support claw 41 of collar 4; Core bar 2 tops are provided with the collar 22,23 that can fasten with the inboard bottom face 631 and the top end face 632 of annular screens circle elasticity Convex chuck 63, and are provided with an easily broken place 24 in collar 23 bottoms.In addition, core bar 2 bottoms are provided with through hole 25, and a backing pin 3 with matching is set on it, play position-limiting action in the transportation of syringe with before using, and can prevent self-destruction in advance.
Shown in Fig. 1,8,9 and 10, be the whole use overall process of this utility model, wherein Fig. 1 is the cutaway view of unused state, this moment, second half platform that can block syringe 1 bottom of backing pin 3 played position-limiting action.The action diagram that Fig. 8 finishes for drawing liquid all pushed backing pin 3 in the through hole 25 that matches with it before injection, cancelled spacing.Finish and the action diagram that finishes of self-destruction for liquid infusion as Fig. 9 and 10, after liquid infusion finishes, the spherical boss 21 at core bar 2 tops is mutually stuck with the elasticity support claw 41 of collar 4, continue to pull back core bar 2 again, just make collar 4 drive needle stand 5, needle stand 5 is broken away from and the internal motion of syringe 1 mutually close-fitting position to syringe 1, collar 22 on it, 23 with elasticity Convex chuck 63 corresponding the fastening of annular screens circle 6, core bar 2 can not be extracted out, can not before push away, this moment, whole syringe needle and needle stand 5 retracted to syringe 1 inner chamber fully, finish the self-destruction first time of syringe, then core bar 2 is slightly firmly fractureed it or breaks from easily broken 24, reach the core bar self-destruction, the realization the purpose of this utility model.
In a word, this utility model finishes the back retractable needle in syringe in injection, and can realize the self-destruction of core bar, the repeated use of fundamentally having stopped syringe, and the while also is convenient to the carrying of syringe rubbish and destroys.
Claims (8)
1, a kind of safe self-destruction syringe for medical purpose, comprise a hollow barrel (1), one is installed in the needle stand (5) of syringe head, one is installed in the annular screens circle (6) of syringe bottom, one is installed in the sheath (7) that the interior core bar (2) and of syringe is installed in the syringe head, described core bar head is provided with a plug (9), it is characterized in that: the endoporus upper boss (13) that needle stand (5) middle and upper part is provided with an outward flange (52) and syringe (1) fastens; One collar (4) is installed in the needle stand (5), and collar (4) cylindrical closely engages with the endoporus of needle stand (5).
2, a kind of safe self-destruction syringe for medical purpose as claimed in claim 1, base is characterised in that: the inner round wall of the cylindrical wall of described needle stand (5) and syringe (1) fits tightly, the pit (51) of the inside molding one waist drum toroidal of needle stand (5), the top of pit forms right angle end face (511), itself and the top end face (42) of collar (4) butt mutually, the pit bottom forms a transition inclined-plane (512), and the bottom face (43) of itself and collar (4) fastens; Described outward flange (a 52) transition inclined-plane of bottom molding (521), the upper surface (131) of the boss (13) on itself and syringe endoporus top is superimposed.
3, a kind of safe self-destruction syringe for medical purpose as claimed in claim 1 or 2, base is characterised in that: described needle stand (5) arm and syringe (1) transition position are installed one " O " RunddichtringO (8).
4, a kind of safe self-destruction syringe for medical purpose as claimed in claim 1, base is characterised in that: it is one that described collar (4) packs that needle stand endoporus (51) engages with it into, and its top forms a plurality of elasticity support claws (41) that can fasten with the spherical boss (21) of core bar (2) head.
5, a kind of safe self-destruction syringe for medical purpose as claimed in claim 1, it is characterized in that: described annular screens circle (6) is a landolsring, its outside forms two boss (61), (62), its head sets up a plurality of elasticity Convex chucks (63), the inboard bottom face of Convex chuck (63) (631) be shaped as square, the plane that is shaped as of Convex chuck (63) top end face (632) is connected with chamfered transition.
6, as claim 1 or 5 described a kind of safe self-destruction syringe for medical purpose, it is characterized in that: the bottom inside of described syringe (1) forms two grooves (11), (12), and it closely engages with outer lug boss (61), (62) of annular screens circle (6) respectively.
7, as claim 1 or 5 described a kind of safe self-destruction syringe for medical purpose, it is characterized in that: the top of described core bar (2) is provided with the spherical boss (21) that can fasten with the elasticity support claw (41) of collar (4); Core bar (2) top is provided with collar (22), (23) that can fasten with the inboard bottom face (631) and the top end face (632) of annular screens circle elasticity Convex chuck (63), and is provided with an easily broken place (24) in collar (23) bottom.
8, a kind of safe self-destruction syringe for medical purpose as claimed in claim 1 is characterized in that: described core bar (2) bottom is provided with through hole (25), and a backing pin with matching (3) is set on it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520134345 CN2863144Y (en) | 2005-12-28 | 2005-12-28 | Safe self-destruction medical syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520134345 CN2863144Y (en) | 2005-12-28 | 2005-12-28 | Safe self-destruction medical syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2863144Y true CN2863144Y (en) | 2007-01-31 |
Family
ID=37675596
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520134345 Expired - Fee Related CN2863144Y (en) | 2005-12-28 | 2005-12-28 | Safe self-destruction medical syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2863144Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100450560C (en) * | 2007-02-12 | 2009-01-14 | 林作钱 | Self-destroying insulin injector |
| CN113018590A (en) * | 2021-02-26 | 2021-06-25 | 上海康德莱医疗器械股份有限公司 | Safety syringe |
-
2005
- 2005-12-28 CN CN 200520134345 patent/CN2863144Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100450560C (en) * | 2007-02-12 | 2009-01-14 | 林作钱 | Self-destroying insulin injector |
| CN113018590A (en) * | 2021-02-26 | 2021-06-25 | 上海康德莱医疗器械股份有限公司 | Safety syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070131 Termination date: 20111228 |