CN2863143Y

CN2863143Y - Safe self-destruction syringe

Info

Publication number: CN2863143Y
Application number: CN 200520117121
Authority: CN
Inventors: 林作钱
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-12-07
Filing date: 2005-12-07
Publication date: 2007-01-31
Anticipated expiration: 2015-12-07

Abstract

The utility model discloses a safe destruct medical injector, which comprises a hollow cylinder, a muffle mounted at the head of the cylinder, a core rod in the cylinder and a rubber plug mounted at the head of the core rod, wherein the head of the cylinder is provided with a base and the bottom is provided with a clamping ring, the base is composed of an upper base and a connecting sheath, the front inner hole of the upper base is adhered with the steel needle via glue, the outer lower part of the upper base is provided with a plurality of elastic support claws engaged with the groove at the inner hole of the cylinder head, the inner lower end of the upper base is provided with a protruded round, the connecting sheath is hollow whose front is inserted into the chamber of the upper base and the top is arranged with a plurality of elastic support claws clamped with the head cam of the core rod, and the outer side is provided with two cams, the groove composed of two cams is engaged with the protruded round at the inner lower end of the upper base, the lower cam is supported with the bottom elastic support claw of the upper base. The core rod of the utility model will be destroyed in the cylinder after injection.

Description

A kind of safe self-breaking syringe

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-breaking syringe 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 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, inject the core bar that finishes and be destroyed in the interior injector for medical purpose of syringe, 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, with a sheath that is installed in the syringe head, one is installed in the core bar and the plug that is installed in the core bar head in the syringe, and described syringe head is provided with a needle stand, and the bottom is provided with a screens circle, it is characterized in that: needle stand is made up of last needle stand and linking sleeve two parts, wherein go up anterior endoporus of needle stand and the effective glue secure bond of draw point, last needle stand outer lower portion sets up a plurality of elasticity support claws, and it engages with the groove that syringe head endoporus is provided with; Last needle stand inside lower end is provided with a dome; Described linking sleeve inner hollow, front end stretches into the needle stand inner chamber, the head spherical crown shape boss that its top forms many elasticity support claws and core bar fastens, its arranged outside has two boss, the groove that two boss form and the dome of last needle stand inside lower end fasten, and the elasticity support claw of lower convex platform and last needle stand bottom holds mutually.

Forming a groove outside in the middle of the above-mentioned upward needle stand cooperates with sealing ring.

Recess width between above-mentioned adapter sleeve two boss is greater than the dome width of needle stand.

The top of above-mentioned core bar is provided with spherical boss, and the elasticity support claw of itself and linking sleeve fastens; Core bar top is provided with two collars, and wherein the collar bottom is provided with easy breakpoint.

Above-mentioned syringe head endoporus groove is the even five equilibrium of circumference and distributes, and its number is identical with the elasticity support claw number of last needle stand.

(be a landolsring, its outside forms two boss and closely engages with the corresponding inner groovy in the bottom of syringe above-mentioned annular screens circle; Screens circle head is set up a plurality of elasticity Convex chucks, the right angle face that is shaped as of the inboard bottom face of elasticity Convex chuck, and its upper surface with the core bar collar engages, and the plane that is shaped as at the top of convex annular claw is connected with chamfered transition, and the collar lower surface of itself and core bar is superimposed.

Above-mentioned core bar bottom has a catch hole, a catch is set with it movingly on it.

Go up elasticity support claw and groove engagement connection between needle stand and the syringe in this utility model, make both connections more firm, prevent to take place in use relative rotation simultaneously between the two, avoid bringing misery to the patient.Form a groove outside in the middle of the needle stand and cooperate, behind the syringe of packing into, seal with sealing ring.The support claw at the top of linking sleeve engages with the spherical boss of core bar head, and the lower convex platform on it holds mutually with the elasticity support claw inboard of the bottom of last needle stand, when pushing away liquid and finish backward pull, linking sleeve is by drop-down, the last needle stand elasticity support claw that causes relying on the linking sleeve lower convex platform to hold bounces back, it is broken away from and the engaging of syringe, and, reach the purpose of needle retractable together with adapter sleeve rollback in syringe.

The screens circle adopts a landolsring, and being convenient to its syringe bottom of packing into is one with the syringe card.Two collars on core bar top push away liquid finish pull backward up to corresponding the fastening of inboard bottom face of the elasticity Convex chuck of annular screens circle, core bar can not be extracted out, can not before push away; The easy breakpoint that core bar is provided with from the collar bottom firmly fractures subsequently, realizes the self-destruction of core bar.In addition, the core bar bottom has a catch hole, a catch is set with it movingly on it, and the top end face of catch and the bottom surface of syringe be butt mutually, plays position-limiting action before transportation and drawing liquid, can prevent from only to ruin in advance.

Description of drawings

Fig. 1, planar structure cutaway view of the present utility model;

The enlarged drawing of Fig. 2, this utility model Fig. 1;

The planar structure cutaway view of needle stand on Fig. 3, this utility model;

The planar structure cutaway view of Fig. 4, this utility model linking sleeve;

The planar structure cutaway view of Fig. 5, this utility model screens circle;

The planar structure vertical view of Fig. 6, this utility model screens circle;

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 injection finish;

Behind Fig. 9, this utility model core bar post-tensioning the planar structure cutaway view

The planar structure cutaway view that Figure 10, this utility model self-destruction finish.

The specific embodiment:

As illustrated in fig. 1 and 2, a kind of safe self-breaking syringe, comprise a hollow barrel 1, be installed in the core bar 2 in the syringe 1 with a sheath 7, that is installed in syringe 1 head and be installed in the plug 3 of core bar 2 heads, syringe 1 head is provided with a needle stand, the bottom is provided with a screens circle 6, syringe 1 endoporus head is provided with a plurality of even five equilibrium grooves distributed 11 of circumference that are, and the endoporus bottom has two grooves, and the screens circle 6 of an interference fit is set on the groove.

Shown in Fig. 3 and 4, needle stand is made up of last needle stand 41 and linking sleeve 42 two parts, wherein go up needle stand 41 anterior endoporus and the effective glue secure bond of draw point, last needle stand 41 outer lower portion set up a plurality of elasticity support claws 411, it engages with the groove 11 that syringe 1 head endoporus is provided with, such structure makes both connections more firm, prevent to take place in use relative rotation simultaneously between the two, avoid bringing misery to the patient, in addition, last needle stand 41 inside lower end are provided with a dome 412, last needle stand 4) in the middle of the outside form a groove 413 and cooperate with sealing ring 5, the latter seals behind the syringe of packing into.Linking sleeve 42 inner hollow, front end stretches into needle stand 41 inner chambers, the head spherical crown shape boss 21 that its top forms many elasticity support claws 421 and core bar 2 fastens, its arranged outside has two boss 422,423, the groove 424 that two boss form fastens with the dome 412 of last needle stand 41 inside lower end, and lower convex platform 423 holds mutually with the elasticity support claw 411 of last needle stand bottom, groove 424 width that cause two boss form are greater than the width of last needle stand dome 412, make and have certain stroke space between the two, when adapter sleeve 42 when drop-down, last needle stand 41 keeps motionless when beginning, lower convex platform 423 up to adapter sleeve 42 is removed with the state that holds of last needle stand elasticity support claw 411, at this moment, elasticity support claw 411 retractions and disengaging engage with syringe groove 11, and go up the lower surface butt of needle stand dome 412 upper surfaces and adapter sleeve convex platform 422, when core bar 2 continuation are drop-down, last needle stand 41 just bounces back in syringe 1 together with adapter sleeve 42, reaches the purpose of self-destruction.

The top of core bar 2 is provided with spherical boss 21, and the elasticity support claw 421 of itself and linking sleeve 42 fastens; Core bar 2 tops are provided with two

collars

22,23, and wherein collar 23 bottoms are provided with easy breakpoint 24.The core bar bottom has a catch hole 25, a catch 26 is set with it movingly on it, and the bottom surface of the top end face of catch 25 and syringe 1 is butt mutually, plays position-limiting action before transportation and drawing liquid, can prevent from only to ruin in advance.

As illustrated in Figures 5 and 6, be a landolsring, be convenient to its syringe 1 bottom and syringe 1 card of packing into is one.Annular screens circle 6 outsides form two

boss

61,62 and closely engage with the corresponding inner groovy in the bottom of syringe 1; Screens circle 6 heads are set up a plurality of elasticity Convex chucks 63, the right angle face that is shaped as of elasticity Convex chuck 63 inboard bottom faces 631, its upper surface with core bar collar 23 engages, and the plane that is shaped as at the top 632 of convex annular claw is connected with chamfered transition, and itself and core bar collar 22 lower surfaces are superimposed.Push away liquid finish pull core bar 2 backward up to inboard bottom face 631 corresponding the fastening of the elasticity Convex chuck 63 of annular screens circle 6, core bar 2 can not be extracted out, can not before push away, the easy breakpoint 24 that core bar 2 is provided with from collar 23 bottoms firmly fractures subsequently, realizes the self-destruction of core bar 2.

As Fig. 1,7,8,9 and shown in Figure 10, be the whole use overall process of this utility model, wherein Fig. 1 is the cutaway view of unused state, and this moment, the top end face of catch 25 contacted with the bottom face of syringe 1, prevent that core bar 2 from continuing to make it self-destruction in advance forward, begins drawing liquid then.The cutaway view that Fig. 7 finishes for drawing liquid, identify catch 25 and enter in the catch hole 24 of core bar 2 this moment.Fig. 8 pushes away the action diagram that liquid finishes, and it is stuck with it that the spherical boss 21 of core bar 2 heads pushed away the support claw 421 of linking sleeve 42.Fig. 9 is the action diagram of core bar 2 post-tensioning needle stands retraction, because of the spherical boss 21 of core bar 2 heads stuck with the support claw 421 of adapter sleeve, when post-tensioning core bar 2, drive linking sleeve 42 simultaneously, remove up to the adapter sleeve lower convex platform 423 and the state that holds of last needle stand elasticity support claw 411, at this moment, last needle stand elasticity support claw 411 retractions and disengaging engage with syringe groove 11, and the lower surface butt of last needle stand dome 412 upper surfaces and adapter sleeve convex platform 422, continuation post-tensioning along with core bar 2, whole needle stand is rollback in syringe 1, up to inboard bottom face 631 corresponding fasten of core bar collar 23 with the elasticity Convex chuck 63 of annular screens circle 6, core bar 2 can not be extracted out, can not before push away, the locked bottom to syringe 1 of the head of core bar 2, from easy breakpoint 24 core bar 2 slightly firmly being fractureed at last reaches the core bar self-destruction, as shown in figure 10.

Above-mentioned several embodiment is only for the usefulness that this utility model is described, and be not to restriction of the present utility model, the those of ordinary skill in relevant technologies field, under the situation of the spirit and scope that do not break away from utility model, can also make various variations and modification, so all technical schemes that are equal to also belong to category of the present utility model.

Claims

1, a kind of safe self-breaking syringe, comprise a hollow barrel (1), with a sheath (7) that is installed in syringe (1) head, one is installed in the core bar (2) in the syringe (1) and is installed in the plug (3) of core bar (2) head, described syringe (1) head is provided with a needle stand, the bottom is provided with a screens circle (6), it is characterized in that: needle stand is made up of last needle stand (41) and linking sleeve (42) two parts, wherein go up the effective glue secure bond of anterior endoporus of needle stand (41) and draw point, last needle stand (41) outer lower portion sets up a plurality of elasticity support claws (411), and it engages with the groove (11) that syringe (1) head endoporus is provided with; Last needle stand (41) inside lower end is provided with a dome (412); Described linking sleeve (42) inner hollow, front end stretches into needle stand (41) inner chamber, the head spherical crown shape boss (21) that its top forms many elasticity support claws (421) and core bar (2) fastens, its arranged outside has two boss (422), (423), the groove (424) that two boss form fastens with the dome (412) of last needle stand (41) inside lower end, and the elasticity support claw (411) of lower convex platform (423) and last needle stand bottom holds mutually.

2, a kind of safe self-breaking syringe as claimed in claim 1 is characterized in that: form a groove (413) outside in the middle of the described upward needle stand (41) and cooperate with sealing ring (5).

3, a kind of safe self-breaking syringe as claimed in claim 1 is characterized in that: the width of described groove (424) is greater than the width of dome (412).

4, a kind of safe self-breaking syringe as claimed in claim 1 is characterized in that: the top of described core bar (2) is provided with spherical boss (21), and the elasticity support claw (421) of itself and linking sleeve (42) fastens; Core bar (2) top is provided with two collars (22), (23), and wherein collar (23) bottom is provided with easy breakpoint (24).

5, a kind of safe self-breaking syringe as claimed in claim 1 is characterized in that: described syringe (1) head endoporus groove (11) is the even five equilibrium of circumference and distributes, and its number is identical with elasticity support claw (411) number of last needle stand (41).

6, as claim 1,2,4 or 5 described a kind of safe self-breaking syringes, it is characterized in that: described annular screens circle (6) is a landolsring, and its outside forms two boss (61), (62) closely engage with the corresponding inner groovy in bottom of syringe (1); Screens circle (6) head is set up a plurality of elasticity Convex chucks (63), the right angle face that is shaped as of the inboard bottom face of elasticity Convex chuck (63) (631), its upper surface with core bar (2) collar (23) engages, the plane that is shaped as at the top of convex annular claw (632) is connected with chamfered transition, and collar (22) lower surface of itself and core bar (2) is superimposed.

7, as claim 1 or 4 described a kind of safe self-breaking syringes, it is characterized in that: described core bar bottom has a catch hole (25), a catch (26) is set with it movingly on it.