CN200987815Y

CN200987815Y - A safety self-destroy injector

Info

Publication number: CN200987815Y
Application number: CN 200620048581
Authority: CN
Inventors: 刘泽木
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-12-05
Filing date: 2006-12-05
Publication date: 2007-12-12
Anticipated expiration: 2016-12-05

Abstract

The utility model relates to a safe self-destruct injector, which is characterized in that: a diamond cone is provided on the lower end of a movable needle head base, a conical tip is provided on the lower end of the diamond cone body, the inner of the diamond cone is hollow which consists of two rigging latuses, a rubber plug film is provided on the surface of the rubber plug, a ring column is provided on the end of a core bar, the core bar has an opening at the top and a hollow intracavity, a core bar film is provided in the intracavity of the ring column, a snuffle hole is provided on the inner wall of the ring column which is at the lower part of the core bar film, the ring column is jacketed and connected with the rubber plug sleeve at outside. The product has novel design, whose biggest characteristic is using the instability of the diamond. Two sides of the diamond are open when pushed and tighter as further push, the retreat protecting force can exceed 50N; the two sides of the diamond can shrink when pulled back and disengage the ring clasp, the force of pulling back can be less than 10N, which completely overcomes the shortage of the present products. The product has outstanding substaintial characteristic and notable progress compared to the present technic.

Description

A kind of safe self-breaking syringe

Technical field:

This utility model relates to technical field of medical, a kind of specifically awl sharp self-destruction and needle holder the pull back safe self-breaking syringe of mechanism, particularly its mechanical connecting structure of having.

Background technology:

At present, self-destroyed syringe is of a great variety, the safety injector kind is also a lot, but can self-destruction can reach the syringe of safe effect and few again, the Generally Recognized as safe syringe all is based on security function, and ignored self-destroying function, such safety injector is reclaimed again assembling again by illegal retailer, hazardness is very big, and, the structure of safety injector is the form based on retractable needles mostly, exists the technical a pair of contradiction utmost point and be difficult to resolve certainly in this structure, prevents when promptly having an acupuncture treatment that the power of the withdraw of the needle from must want big contradiction than the power of artificial (automatically) retracted needle.If be provided with localized power big can prevent the withdraw of the needle, then the power of retractable needles can be become heavy equally, can not realize safety; If it is little that localized power is set, the power of retractable needles is little, realizes safety easily, but the power that prevents the withdraw of the needle is also little, (U.S.'s requirement anti-back power 〉=50N), and the power of (drawing) back stitching point that contracts need be very light, is convenient to one-handed performance, operated by rotary motion is at≤20N, this power determines that by the needle stand fixed form existing safe self-breaking syringe is easy to when clinical acupuncture treatment because of needle point anti-back power is not enough, in the own retract syringes overcoat, it is to cause malpractice on one's body everywhere patient that medicinal liquid leaks.

Documents, the patent No.: 200520005794.7, patentee: American Sailunje Medical Apparatus Co, publication number: CN2776427, disclose a kind of " safe self-breaking syringe syringe " in this case, its principal claim is: a kind of safe self-breaking syringe syringe comprises cylindrical shell, core bar and the piston that matches with it, wherein, the near-end of described cylindrical shell has cylindrical space, and far-end has interface channel, the top of described interface channel is provided with opening, and piston is arranged in the cylindrical shell; It is characterized in that, be provided with distensible clamping unit, in order in interface channel, to form keeper on the top of described interface channel; The head of core bar is provided with stylostome, is provided with draw-in groove in the pipe.

Still there are various shortcoming and defect in existing all kinds of safe self-breaking syringe, so still need existing safe self-breaking syringe is further improved.

Summary of the invention:

The purpose of this utility model is to provide a kind of safe self-breaking syringe, its active pointer headstock location structure is reasonable, pull-back forces required during use is little, product hermeticity is good, medicinal liquid does not have residual leakage phenomenon, medicinal liquid seepage phenomenon appears in the needle holder Shi Buhui that pulls back, and has overcome deficiency of the prior art and shortcoming.

To achieve these goals, technical scheme of the present invention is: a kind of safe self-breaking syringe, it mainly comprises overcoat, be provided with the active pointer headstock in the tube neck of overcoat end, center, active pointer headstock top is provided with needle tubing, be provided with core bar in the overcoat, the core bar end is socketed with plug, it is characterized in that: described active pointer headstock lower end is provided with the rhombus awl, and the cone lower end of described rhombus awl is provided with the awl point, rhombus awl inner hollow, the rhombus awl is made of the awl limit of two outer foldings, the plug surface is provided with the plug thin film, and the end of core bar is provided with the annulus post, and the annulus column top is provided with opening, annulus post inner chamber hollow, annulus post inner chamber is provided with the core bar thin film, and the outer wall place of the annulus post of core bar thin film bottom is provided with bleeder port, and plug is socketed on outside the annulus post.

The utility model discloses a kind of safe self-breaking syringe, its structural design novelty, active pointer headstock location structure is reasonable and practical, product utilization rhombus awl destroys the hermetically-sealed construction of plug, makes can't form negative pressure in the overcoat, and syringe is realized complete self-destruction being used to complete the back, can't be recovered utilization once more, product does not have the medicinal liquid residual phenomena, and to have avoided in acupuncture treatment be because of needle point anti-back power is not enough, in the needle holder withdrawal overcoat, medicinal liquid seepage phenomenon appears, the characteristics of this product maximum are to utilize rhombohedral unstability, and open on both sides when pushing away, and pushes away tighter and tighter, anti-back power can surpass 50N, and when retracting, rhombohedral both sides can dwindle, and break away from circumferential clasp, the power that retracts can be less than 10N, overcome the deficiency that exists in the existing product fully,, had outstanding substantive distinguishing features and obvious improvement than prior art.

Description of drawings:

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

Fig. 2 is this utility model original state sketch map.

Fig. 3 for this utility model injection finish after view.

Fig. 4 is this utility model safety self-destruct view.

The specific embodiment:

With reference to the accompanying drawings, this utility model further is described

This utility model is a kind of safe self-breaking syringe; as shown in fig. 1; it mainly comprises overcoat 16; be provided with active pointer headstock 2 in the tube neck of overcoat end; center, active pointer headstock 2 top is provided with needle tubing 26; be provided with core bar 17 in the overcoat; the core bar end is socketed with plug 27; it is characterized in that: described active pointer headstock 2 lower ends are provided with rhombus awl 3; the cone lower end of described rhombus awl is provided with awl point 28; rhombus awl inner hollow; the rhombus awl is made of the awl limit of two outer foldings; plug 27 surfaces are provided with plug thin film 11; in the specific implementation; the thickness of plug thin film 11 can be 0.05mm-0.4mm; the end of core bar 17 is provided with annulus post 13; annulus post 13 tops are provided with opening; annulus post 13 inner chamber hollows; annulus post 13 inner chambers are provided with core bar thin film 14; the outer wall place of the annulus post 13 of core bar thin film 14 bottoms is provided with bleeder port 15; plug 27 is socketed on outside the annulus post 13; the knuckle place that described rhombus is bored 3 two awl limits is provided with and gets out of a predicament or an embarrassing situation 4; the place, upper edge of described awl point 28 is provided with anti-step 5; the tube neck inwall of described overcoat 16 ends is provided with and the 4 right angle grabs 9 that cooperate of getting out of a predicament or an embarrassing situation near the place, bottom; after assembling is finished; get out of a predicament or an embarrassing situation and 4 prop up right angle grab 9; such structural design can play the effect of spacing retaining to needle holder; described core bar 17 places vertically are provided with four reinforcements 23; wherein reinforcement 23 bottoms are provided with breach 29; indentation, there is provided with screening glass 22; screening glass can effectively stop core bar to be subjected to displacement forward because of the external force effect; the unexpected self-destructor that triggers in the overcoat; cause syringe to be scrapped fully; one end of described screening glass 22 is fixedly connected on breach 29 tops; the finger that the other end of screening glass 22 is fixedly connected on core bar 17 bottoms holds in the palm 21 places; screening glass is the evagination shape; the length of screening glass is greater than the height of breach; the screening glass prominence is provided with the right angle hook 25 perpendicular to screening glass; after assembling is finished; the top edge of right angle hook just in time props up the outer mural margin at overcoat lower ending opening place; can prevent that core bar is subjected to displacement forward; the front portion of described core bar 17 bodies of rod is provided with horizontal retaining sheet 19; retaining sheet 19 is positioned at the bottom of plug socket position; described reinforcement 23 places laterally are provided with reinforcement breach 20; the reinforcement breach can shape triangular in shape; described outer casing inner wall is provided with convex snap ring 18 near the lower openings place; the top inner wall place of outer sleeve neck is provided with spacing ring 8; described active pointer headstock 2 is positioned at the outer sleeve neck; the end of active pointer headstock 2 is socketed with O-ring seal 6; O-ring seal 6 is between active pointer headstock 2 and overcoat; O-ring seal 6 tops are provided with annular cover 7, and annular cover 7 is socketed on active pointer headstock 2 ends.

When this utility model is specifically implemented to use; remove the syringe exterior big envelope; pluck the safety shield at needle tubing place; as shown in Figure 2; when original state; the right angle hook of screening glass just in time props up the edge of overcoat lower openings; even making core bar be subjected to the external force effect can not be subjected to displacement forward yet; avoided self-destructor to be triggered by accident; the accident that causes the syringe accident to be scrapped takes place; during use; at first with the inboard flicking screening glass of female sensing; make screening glass flexural deformation to the inside; because the total length of screening glass is greater than the height of core bar place breach; so be outwardly-bent distortion when assembling is finished; because the thickness of screening glass knee is thinner; so being subjected to the external force effect is to be easy to deform; the two ends of screening glass are fixed; so after screening glass is being subjected to external force flexural deformation to the inside, under tensile effect, be in steady statue fully; at this moment; core bar just can the easy on and off displacement; the pulling core bar begins to inhale medicinal liquid; start injection after imbibition is finished; when the plug thin film on core bar surface touches the awl point; promote core bar more forward; the broken plug thin film of awl spine; the awl point enters annulus post inner chamber together with the rhombus awl at rear portion; continue to promote forward core bar; core bar thin film in the broken annulus post of awl spine; the original width of rhombus awl is greater than bore in the annulus post; but because its middle part hollow; the rhombus awl is made of the awl limit of two outer foldings; article two, the awl limit of outer folding is easy to inwardly deform under the effect that is subjected to external force; make the rhombus awl can easily enter annulus post inner chamber; after the core bar thin film is punctured; plug top is punctured opening and is convenient to the bleeder port of bottom and is interconnected; make and to form negative pressure in the syringe jacket; realize the purpose of the thorough self-destruction of syringe; at this moment; the awl limit of the rhombus awl of stress deformation applies the tension force of bounce-back to both sides; this masterpiece is used for the inwall place of annulus post; make that the rhombus awl is firmly stuck at annulus post inner chamber; pull back core bar; as shown in Figure 4; core bar pulls back the rhombus awl; needle holder is also along with rhombus is bored to bottom offset; leave overcoat front end tube neck; enter the overcoat inner chamber; last needle tubing also enters the overcoat inner chamber fully; when the retaining sheet at core bar place props up the convex snap ring of outer casing inner wall; the core bar stop motion; at this moment; the operator only need fracture core bar along the reinforcement breach and just can; realize self-destruction once more; make core bar also can't recycle once more, thoroughly stopped the accident of disposable syringe recycling.

Claims

1, a kind of safe self-breaking syringe, it mainly comprises overcoat (16), be provided with active pointer headstock (2) in the tube neck of overcoat end, active pointer headstock (2) center, top is provided with needle tubing (26), be provided with core bar (17) in the overcoat, the core bar end is socketed with plug (27), it is characterized in that: described active pointer headstock (2) lower end is provided with rhombus awl (3), the cone lower end of described rhombus awl is provided with awl point (28), rhombus awl inner hollow, the rhombus awl is made of the awl limit of two outer foldings, plug (27) surface is provided with plug thin film (11), the end of core bar (17) is provided with annulus post (13), annulus post (13) top is provided with opening, annulus post (13) inner chamber hollow, and annulus post (13) inner chamber is provided with core bar thin film (14), the outer wall place of the annulus post (13) of core bar thin film (14) bottom is provided with bleeder port (15), and plug (27) is socketed on outside the annulus post (13).

2, according to a kind of safe self-breaking syringe described in the claim 1, it is characterized in that: the knuckle place on (3) two awls of described rhombus awl limit is provided with get out of a predicament or an embarrassing situation (4).

3, according to a kind of safe self-breaking syringe described in the claim 1, it is characterized in that: the place, upper edge of described awl point (28) is provided with anti-step (5).

4, according to a kind of safe self-breaking syringe described in the claim 1, it is characterized in that: the tube neck inwall of described overcoat (16) end is provided with the right angle grab (9) that cooperates with get out of a predicament or an embarrassing situation (4) near the place, bottom, and get out of a predicament or an embarrassing situation (4) prop up right angle grab (9).

5, according to a kind of safe self-breaking syringe described in the claim 1, it is characterized in that: described core bar (17) locates vertically to be provided with four reinforcements (23), and wherein a reinforcement (23) bottom is provided with breach (29), and indentation, there is provided with screening glass (22).

6, according to a kind of safe self-breaking syringe described in the claim 5; it is characterized in that: an end of described screening glass (22) is fixedly connected on breach (29) top; the other end of screening glass (22) is fixedly connected on the finger holder (21) of core bar (17) bottom and locates; screening glass is the evagination shape, and the prominence is provided with the right angle hook (25) perpendicular to screening glass.

7, according to a kind of safe self-breaking syringe described in the claim 1, it is characterized in that: the front portion of described core bar (17) body of rod is provided with horizontal retaining sheet (19), and retaining sheet (19) is positioned at the bottom of plug socket position.

8, according to a kind of safe self-breaking syringe described in the claim 5, it is characterized in that: described reinforcement (23) locates laterally to be provided with reinforcement breach (20), and the reinforcement breach can shape triangular in shape.

9, according to a kind of safe self-breaking syringe described in the claim 1, it is characterized in that: described outer casing inner wall is provided with convex snap ring (18) near the lower openings place, and the top inner wall place of outer sleeve neck is provided with spacing ring (8).

10, according to a kind of safe self-breaking syringe described in the claim 1, it is characterized in that: described active pointer headstock (2) is positioned at the outer sleeve neck, the end of active pointer headstock (2) is socketed with O-ring seal (6), O-ring seal (6) is positioned between active pointer headstock (2) and the overcoat, O-ring seal (6) top is provided with annular cover (7), and annular cover (7) is socketed on active pointer headstock (2) end.