CN2588997Y

CN2588997Y - Safety type needle stand set construction

Info

Publication number: CN2588997Y
Application number: CN 02289177
Authority: CN
Inventors: 洪明甘
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-12-11
Filing date: 2002-12-11
Publication date: 2003-12-03
Anticipated expiration: 2012-12-11

Abstract

The utility model relates to a safety type needle stand set construction, which comprises a protective casing body and a connecting stand, wherein, the protective casing body comprises a hollow accommodation part and a hollow space part which are communicated with each other. The accommodation part is provided with a limit groove and a convex bunt part near an opening end; a shoulder is formed on a junction part of the other end of the accommodation part and the space part, and is used for ensuring that the connecting stand and the needle stand set can be respectively arranged in the accommodation part and the space part. The proper part of the connecting stand is respectively provided with a stand part, a guide hole and a back frame part, wherein, the guide hole penetrates through the stand part which is positioned in the back frame part, and the proper part of the back frame part is provided with at least more than one stopping parts. With the structure, a needle body can be indeed and effectively retracted to the space part of the protective casing body, and a dangerous accident of puncturing other people after injection can not occur.

Description

Safety type needle stand set constructor

Technical field

This utility model relates to a kind of syringe, relates to a kind of syringe cylinder more specifically.

Background technology

Syringe cylinder commonly used, as shown in Figure 1, mainly include syringe 10, push rod 15, syringe needle group 18, wherein be provided with in this syringe 10 and run through accommodation chamber 11, so that push rod 15 and leak-stopping body 17 are positioned at it, and the front end of this syringe 10 is provided with protuberance 12 so that the pedestal 180 of syringe needle group 18 can be enclosed within it above; The front end of push rod 15 is provided with sagittate hook portion 16, so that can be chimeric mutually with the recess 170 in the leak-stopping body 17, leak-stopping body 17 is moved along with the moving direction of push rod 15; Like this, the liquid medicine of the accommodation chamber 11 that is positioned at syringe 10 is up moved with push rod 15 and leak-stopping body 17, and this liquid medicine is flow in the syringe needle group 18, be expelled in the human body through needle tubing 181 again;

Though technique scheme can reach its practical novel purpose,, also there is following defective in the use:

1. when push rod is pressed onto the end forward with the leak-stopping body, though can make most medicament along the needle tubing of syringe needle group and be expelled in the human body, but, when injection finishes, when push rod retracts backward, then tend to make push rod and the leak-stopping body above it to break away from syringe respectively because of push rod pulling force backward is excessive, so that remain in medicament in the syringe also along with being ejected, and cause user because of contact locating of infection with medicament.

2. after injection finishes, the syringe needle group must be taken off separately, or needle guard is enclosed within on the syringe needle group,, then stab user easily, thereby suffer courses of infection if careless slightly.

3. as mentioned above, if will be with the syringe needle group of needle guard and syringe when being discarded into refuse bag, tend to friction, and needle tubing and needle guard are separated, and then cause and stab other people and the puzzlement infected once more because of produce to move between most syringes in the refuse bag and needle guard or shake.

Therefore, how to develop and a kind ofly can have the smooth-going thrust of traditional syringe cylinder in when injection, can make the syringe needle group by placing in the syringe safely and fast again, and can make push rod be pulled to the bottom time can't to be pushed away forward once more, to reach the safe effect that injection once just can't reuse, be that we are badly in need of the big problem of making great efforts to research and develop.

The utility model content

For avoiding the drawback of above-mentioned syringe cylinder commonly used, when reaching injection safe effect.

The utility model discloses a kind of safety type needle stand set constructor, it comprises protective case body and joint seat, protective case comprises hollow form holding part and hollow form spatial portion, and holding part is connected with spatial portion, nearly open end at holding part can form stopper slot and convex supporting part, joint between its other end and described spatial portion forms a shoulder, can lay respectively in holding part and the spatial portion for joint seat and needle stand group, the appropriate location of joint seat is respectively equipped with a portion, guide hole and after-frame portion, guide hole is through seat portion, seat portion is positioned at after-frame portion, and makes the appropriate location of after-frame portion be formed up to rare more than one stop section.

Adopt this technology that needle body effectively is recovered in the spatial portion of protective case body really, and do not have unexpected dangerous generation of stabbing other people again after the injection.

Description of drawings

Fig. 1 is the partial profile of combination of syringe cylinder commonly used;

Fig. 2 is the three-dimensional exploded view of safety type needle guard set constructor of the present utility model;

Fig. 3 is the combination profile status figure of Fig. 2;

Fig. 4 is the combination section application state figure of Fig. 3;

The combination section that Fig. 5 promotes to cause the outer sleeve body of needle stand group to come off automatically the protective case body for Fig. 4 to the right;

Combination section when Fig. 6 revert to original position for the protective case body of Fig. 5;

Fig. 7 for the injection of Fig. 6 finish after with turn right once more combination section when being pushed to the end of protective case body;

Combination section when Fig. 8 is pushed back by counter-force for the protective case body front end of Fig. 7;

Fig. 9 is the combination section of another preferred embodiment of this creation;

Figure 10 is that the solid of the another preferred embodiment of this creation is decomposed part sectioned view; The figure number explanation

1 protective case body, 10 holding parts, 101 stopper slots

102 convex supporting parts, 103 limiting sections, 11 spatial portions

110 protuberances, 12 shoulders, 2 linking parts

Frame portion 201 threaded portions, 21 front pilots before 20

22 portion's 220 guidance parts, 23 guide holes

26 holding sections, 24 after-frame portions, 25 stop sections

3 needle stand groups, 30 needle stands, 301 limiting sections

31 needle bodies, 32 outer sleeve bodies, 4 syringe shells

Enclose portion's 401 threaded portions, 45 push rods before 40

The specific embodiment

Safety type needle guard set constructor of the present utility model, arrive shown in Figure 8 as Fig. 2, comprise protective case body 1, joint seat 2 and needle stand group 3, protective case body 1 can be divided into hollow form holding part 10 and hollow form spatial portion 11, holding part 10 is connected with spatial portion 11, the nearly open end of holding part 10 forms stopper slot 101 and convex supporting part 102, joint 11 of the other end of holding part 10 and spatial portions forms a shoulder 12, and be provided with protuberance 110 in the appropriate location of spatial portion 11, with the position of restriction joint seat 2 and needle stand group 3 outer sleeve bodies 32.The appropriate location of joint seat 2 is respectively equipped with preceding frame portion 20, front pilot 21, seat portion 22, guide hole 23 and after-frame portion 24, guide hole 23 is to run through front pilot 21 and seat portion 22, front pilot 21 and seat portion 22 lay respectively in preceding frame portion 20 and the after-frame portion 24, the appropriate location of after-frame portion 24 can form more than one stop section 25, make the seat portion 22 terminal guidance parts 220 that form that are positioned at after-frame portion 24, joint seat 2 is screwed on the threaded portion 401 of syringe shell 4; Preceding frame portion 20 inner friezes are provided with threaded portion 201, and make this threaded portion 201 be positioned at front pilot 21 peripheral all sides places, the needle stand 30 of needle stand group 3 be able to be enclosed within on the front pilot 21, and the limiting section 301 that can make needle stand 30 be able to be screwed on the threaded portion 201, but above-mentioned stop section 25 is to be bending, and have elastic shape, and the bending place can be protruded out be positioned at after-frame portion 24 inner friezes.Needle stand group 3 is made up of needle stand 30, needle body 31 and outer sleeve body 32, wherein is provided with the limiting section 301 that runs through in the needle stand 30, and is provided with needle body 31 at the front end of limiting section 301, can inject laterally from here for medicament; Needle stand 30 tapered shapes be able to be enclosed within above it for outer sleeve body 32.When assembling, earlier joint seat 2 is put into the holding part 10 of the protective case body 1 of hollow form, because the stop section 25 of joint seat 2 is to be elasticity curved arc shape, and the end of stop section 25 is the outmost surface that do not protrude from joint seat 2 after-frame portions 24, and the bending place that makes stop section 25 is to protrude out to be positioned at joint seat 2 after-frame portions 24 inner frieze sides, like this, joint seat 2 can be slipped in the holding part 10 of protective case body 1 smoothly, till the appropriate location of joint seat 2 arrives at the shoulder 12 of protective case body 1, both preceding frame portion 20 front-end edges of joint seat 2 be able to be adjacent to the protuberance 110 posterior lateral margin places of protective case body 1 spatial portion 11, and make and be positioned at front pilot 21 front-end edges of frame portions 20 inboards before the joint seat 2 and be able to protrude out outer side at the protuberance 110 of protective case body 1, so that the needle stand 30 of needle stand group 3 can be nested with on the front pilot 21 of joint seat 2, and the limiting section 301 that makes needle stand 30 is screwed in the threaded portion 201 of joint seat 2 preceding frame portions 20, and the shell body 32 that makes needle stand group 3 be able to be enclosed within needle stand 30 outsides, and can make shell body 32 root edge places just be positioned at the place ahead of the protuberance 110 of protective case body 1 spatial portion 11; At last, again with the injection group, the syringe shell 4 that promptly includes syringe shell 4 and push rod 45 is inserted in the holding part 10 of protective case body 1, before syringe shell 4, enclose in the guide hole 23 of the after-frame portion 24 that inserts joint seat 2 simultaneously respectively in portion 40 and junction surface 41 and seat portion 22, that is to say, the seat portion 22 of joint seat 2 be able to be enclosed within syringe shell 4 before enclose portion 40 medial border places, at this moment, because the outer surface of the after-frame portion 24 of joint seat 2 and holding part 10 inner friezes of protective case body 1 are polygonal shape, therefore, only need to rotate syringe shell 4, the seat portion 22 of joint seat 2 can and then not moved, and the threaded portion 401 of enclosing portion 40 before the syringe shell 4 can be rotated on the guidance part 220 of 2 portions 22 of joint seat, up to joint seat 2 be screwed on syringe shell 4 before enclose in the portion 40; Like this, just finished the assembling mode between injection group and needle guard group.In the time will being pumped into medicament in the syringe cylinder shell 4, only need earlier the protective case body 1 that is positioned at syringe cylinder 4 outsides to be promoted forward, and the protuberance 110 that can force protective case body 1 to drive its front end also and then moves, the outer sleeve body 32 that also forces protuberance to drive the needle stand group 3 of the spatial portion 11 that has been positioned at protective case body 1 and then moves forward, after the ora terminalis of outer sleeve body 32 separates with needle stand 30, be subjected to the centrifugal force effect and can force this outer sleeve body 32 to come with needle body 31 disengagings automatically, like this, just can be withdrawn into the original state position to protective case body 1 again gets final product backward; At this moment, again needle body 31 is inserted in the pharmacy jar, and the push rod 45 of the moving injection group in position moves backward again, can make medicament be inhaled into syringe shell 4 interior the reaching between push rod 45 top end faces of injection group in regular turn via guide hole 23 backs of needle body 31, needle stand 30 and joint seat 2, be sucked the effect that enters in the syringe cylinder shell 4 to finish medicament.In the time of after injection is finished, will abandoning, just must pass protective case body 1 moving once more forward, till the convex supporting part 102 of protective case body 1 holding part 10 touches after-frame portion 24 bottoms of joint seat 2, it is the spatial portion 11 that needle body 31 ends of needle stand group 3 be able to be positioned at protective case body 1, in other words, allow the stopper slot 101 of protective case body 1 holding part 10 just be positioned at the outer side of the stop section 25 of joint seat 2 exactly, at this moment, because stop section 25 is to be bending, and the bending place is to convexedly stretch in after-frame portion 24 inner friezes of joint seat 2; Therefore and since syringe shell 4 before enclose on seat portion 22 guidance parts 220 that portion 40 is screwed on joint seat 2, and preceding enclose portion 40 be able to outwards promote the bending place of stop section 25 and make stop section 25 terminal move arrive at stopper slot 101 interior till; At this moment, when protective case body 1 is subjected to external force collision and pushes back, can arrive in the stopper slot 101 because of the end of stop section 25, and the thickness of stop section 25 is bigger than gap between joint seat 2 after-frame portions, 24 external diameters and protective case body 1 holding part 10 internal diameters or distance, therefore, can't force it to move again backward, like this, the needle body 31 that can make needle stand group 3 is by in the definite spatial portion of putting nearly protective case body 4 11, reach the health effect that every injection once just must abandon a needle guard group and injection group, and needle body 1 effectively is recovered in the empty portion 11 of protective case body 1 really, and stab other people unexpected dangerous generation again after not having injection, and then increase the effect of its safety.

Fig. 9 is another preferred embodiment figure of the present utility model, its main change is: the appropriate location of joint seat 2 is respectively equipped with a portion 22, guide hole 23 and after-frame portion 24, seat portion 22 is positioned at after-frame portion 24, and then can be penetrated with a guide hole 23 in the seat portion 22, and be provided with a needle body 31 at another of guide hole 23, with injection; The appropriate location of after-frame portion 24 then can form more than one stop section 25, and makes the seat portion 22 terminal guidance parts 220 that form that are positioned at after-frame portion 24, so that joint seat 2 can be screwed on the threaded portion 401 of syringe shell 4; Like this, know-why that it used and means are all described in detail in foregoing, just no longer repeat.

Figure 10 is the another preferred embodiment figure of this utility model, and its main change is: after-frame portion 24 outer surfaces of joint seat 2 change over toroidal by original polygon, and are provided with some holding sections 26 in the outer surface distribution rings of after-frame portion 24; The holding part 10 of protective case body 1 is also by the polygon-shaped toroidal of changing into, and be provided with limiting section 103 in holding part 10 inner frieze distribution rings, holding section 26 for joint seat 2 be able to be placed in limiting section 103, be able to be contained in the side of limiting section 103 for the holding section 26 that links 2, reach the rotary state that prevents 1 of joint seat 2 and protective case body; On the other hand, the nearly open end of protective case body 1 is respectively equipped with convex supporting part 102 and stopper slot 101, and make stopper slot 101 rings be located at holding part 10 inner friezes, when reaching the syringe shell and driving joint seat 2 ends and move to the convex supporting part 102 of protective case body 1 backward, just can make the syringe shell before enclose portion and force the stop section 25 of joint seat 2 to be bounced outward to arrive at stopper slot 101 inner frieze places, and exert oneself once more when pushing away forward, can really can't be joint seat 2 forward impelling, and then reach the health effect that every injection once just must abandon a needle guard group and injection group, and needle body effectively is recovered in the spatial portion of protective case body really, and do not have unexpected dangerous generation of stabbing other people again after the injection; Like this, know-why that it used and means are all described in detail in foregoing, just no longer repeat.

Comprehensive the above, safety type needle guard group of the present utility model is really than its progressive that has more of using always.

Claims

1. safety type needle guard set constructor, it is characterized in that: it comprises protective case body and joint seat, described protective case body comprises hollow form holding part and hollow form spatial portion, described holding part is connected with spatial portion, nearly open end at described holding part can form stopper slot and convex supporting part, joint between its other end and described spatial portion forms a shoulder, can lay respectively in described holding part and the described spatial portion for joint seat and needle stand group;

The appropriate location of described joint seat is respectively equipped with a portion, guide hole and after-frame portion, and described guide hole is through described seat portion, and described seat portion is positioned at after-frame portion, and makes the appropriate location of described after-frame portion be formed up to rare more than one stop section.

2. safety type needle guard set constructor according to claim 1, it is characterized in that: described stop section is bending, and has elasticity, and the bending place can be protruded out in after-frame portion inner frieze.

3. safety type needle guard set constructor according to claim 1, it is characterized in that: the appropriate location of described spatial portion is provided with protuberance, makes the root edge place of the outer sleeve body of needle stand group can be adjacent to a side person of protuberance.

4. safety type needle guard set constructor according to claim 1 is characterized in that: the outer surface of the after-frame portion of described joint seat is a polygonal shape.

5. safety type needle guard set constructor according to claim 1 is characterized in that: the inner frieze of the holding part of described protective case body is a polygonal shape.

6. safety type needle guard set constructor according to claim 1 is characterized in that: the appropriate location of described seat portion is provided with guidance part, and joint seat can be screwed on the threaded portion of syringe shell of injection group.

7. safety type needle guard set constructor according to claim 1 is characterized in that: the outer surface distribution rings of described after-frame portion is provided with some holding sections.

8. safety type needle guard set constructor according to claim 1 is characterized in that: described holding part inner frieze distribution rings is provided with limiting section.

9. safety type needle guard set constructor according to claim 1 is characterized in that: described stopper slot is located at the holding part inner frieze for ring.

10. safety type needle guard set constructor according to claim 1 is characterized in that: frame portion and preceding road portion before the front end appropriate location of described joint seat is provided with, described before frame portion inner frieze be provided with the threaded portion, this threaded portion is positioned at the peripheral all sides of front pilot.

11. safety type needle guard set constructor according to claim 10 is characterized in that: described needle stand group comprises needle stand, needle body and outer sleeve body, is provided with the axis hole that runs through in the described needle stand, is provided with needle body, the tapered shape of described needle stand at the front end of axis hole.