CN2880122Y

CN2880122Y - Safety self-distruction type injuctor capable of changing needle

Info

Publication number: CN2880122Y
Application number: CN 200620039276
Authority: CN
Inventors: 韦家庆
Original assignee: SHANGHAI MAIDEKE MEDICAL MACHINERY SALE CO Ltd
Current assignee: SHANGHAI MAIDEKE MEDICAL MACHINERY SALE CO Ltd
Priority date: 2006-01-26
Filing date: 2006-01-26
Publication date: 2007-03-21
Anticipated expiration: 2016-01-26

Abstract

The utility model discloses a safe self-destruction syringe with an exchangeable needle which is characterized in that: a joint hander is arranged within the cylinder neck in the front end of the outer cylinder. The joint hander is composed of the connection of an outer wall and an inner wall to make a cylinder structure in concentric circle. A space is arranged between the outer wall and the inner wall. A needle hander is connected with the outer cylinder of the inner wall in the joint hander. The product has the advantages of a simple and reasonable structure with easy stripping, practical purpose, high stability and simple operation. The operation of the utility model can be finished by only a hand, with a good effect of self destruction and wide range of application, thus being easy for generalization.

Description

A kind of safety self-destructing syringe of exchangeable needle

Technical field:

This utility model relates to medical technical field of medical, a kind of safety self-destructing syringe of exchangeable needle specifically, and have the safety resistance and ruin mechanism, the particularly mechanical connecting structure of this syringe.

Background technology:

Documents 1, Granted publication number: CN2678668, the utility model patent of the patent No.: ZL200320123617.X disclose a kind of " safety self-destructing syringe ", the patentee: Li Xianyu, it comprises needle point, needle stand, overcoat and decides the journey piston and form; Decide the journey piston and be arranged in the overcoat, it is characterized in that: overcoat inner chamber front end is provided with a ring for fixing, and it links to each other by an annulus with overcoat, and annulus is being equipped with the groove that ruptures between overcoat and ring for fixing; Ring for fixing front end indent, the rear end is a boss, needle stand is installed on the ring for fixing, and is fixed on the overcoat front end by outer cap bag; The core bar inner hollow, its front end is provided with annular penetrator, and the inner chamber front end face is easily broken catch.

Documents 2, Granted publication number: CN2640489, the utility model patent of the patent No.: ZL03253522.8 discloses a kind of " disposable safety self-ruined syringe ", patentee: Shanchuan Medical Appliances Co Ltd, Zibo Shandong, it comprises needle stand, entry needle, syringe sleeve and be positioned at the push rod of syringe sleeve, and it is characterized in that: push rod top is step-like, be with the fluid sealant plug outward, the square beyond the Great Wall center of fluid sealant is provided with the elasticity bar of pulling back.

Documents 3, Granted publication number: CN2640489, the utility model patent of the patent No.: ZL03253522.8 discloses a kind of " disposable safety self-ruined syringe ", patentee: Shanchuan Medical Appliances Co Ltd, Zibo Shandong, it comprises a hollow needle tubing, one is installed in the plug that the interior push rod and of described needle tubing is installed in described push rod front end, the front end of described needle tubing is formed with a needle stand, one syringe needle is installed on the described needle stand, described needle stand inner chamber is formed with a bulge loop, described push rod front end has a core of the card, it is characterized in that: described push rod and described the core of the card are for dividing body structure, described the core of the card is installed in the front end of described push rod, symmetry is formed with two reversed acanthoid projectioies on the described the core of the card surface, described projection can snap in the cavity of described bulge loop front end, described the core of the card can stop up described needle stand inner chamber, and the middle part of described the core of the card is formed with a through hole, and the position of described through hole is corresponding with described projection.

Documents 4, Granted publication number: CN2609562Y, the utility model patent of the patent No.: ZL03220545.7 discloses a kind of " safe re-use preventing once-used syringe ", patentee: Ye Xiaocheng, it comprises sheath, the interior cover of needle stand of entry needle is installed, overcoat and core bar, cover is positioned at the mesopore of overcoat head in the needle stand, core bar is inserted in the overcoat, and be set with sealing ring on the core bar, the upper end of sheath suit and overcoat, the end of core bar is provided with barb and Ka Tai, and the inwall place of overlapping in needle stand is provided with projection that matches with barb and the dogging shoulder that cooperates with Ka Tai, the bottom of core bar is provided with resistance and ruins link stopper, and hinders the bottom that the upper end of ruining link stopper is against overcoat, when injection is finished, in barb and projection, under the effect of Ka Tai and dogging shoulder, can't be pulled back by firmly stuck in the core bar top, reach the effect of self-destruction.

Documents 1,2,3 discloses the technical scheme of three kinds of self-destruction syringes respectively, and their shortcoming is: the first, and needle holder is non-exchange, brings inconvenience to user; Second, because be safety self-destructing syringe, in case safety self-destruct mechanism is triggered, whole syringe is just scrapped fully, do not prevent the safety self-destruct structure and all be provided with in these three kinds of technical schemes, so being easy to take place core bar be subjected to displacement forward by unexpected power, causes the syringe accident to be scrapped, should this still need prior art is improved.

In the technical scheme of in documents 4, putting down in writing, adopt anti-safety self-destruct mechanism, and caused the phenomenon that the syringe accident is scrapped because of malfunction can prevent to a certain extent to assemble or collide the time, but in actual use, ruin link stopper owing to be provided with resistance, cause one hand can't promote core bar at all, need in advance resistance to be ruined link stopper and tear and remove, just can use, complex operation step, bring inconvenience to user, reduced work efficiency, so still need to improve.

Summary of the invention:

The purpose of this utility model is to provide a kind of safety self-destructing syringe of exchangeable needle, it is simple and reasonable, can change needle holder at any time, have very high practicality, and be provided with resistance at the reinforcement place of core bar and ruin mechanism, can prevent effectively that the self-destruction syringe accident from scrapping, simple to operate, from imbibition, convert liquid to injection, can operate by one hand fully, overcome the shortcoming that existing product uses complex steps.

To achieve these goals, the technical solution of the utility model is: a kind of safety self-destructing syringe of exchangeable needle, it mainly comprises overcoat, needle holder, the needle holder end is provided with needle point, be arranged on the core bar in the overcoat, the body of rod place of core bar is provided with reinforcement, and the core bar place is socketed with plug, the body of rod place of core bar front end is provided with groove, be provided with the part of pulling back in the groove, it is characterized in that: be provided with Connection Block in the tube neck of overcoat front end, Connection Block is formed by connecting by outer wall and inwall, they are cylindrical structure, become concentric circular to connect, be provided with the gap between outer wall and the inwall, the inwall place of Connection Block is socketed with needle holder.

The utility model discloses a kind of safety self-destructing syringe of exchangeable needle, it is provided with the Connection Block structure at outer sleeve neck place, Connection Block is formed by connecting by outer wall and inwall, they are cylindrical structure, become concentric circular to connect, be provided with the gap between outer wall and the inwall, make and to change needle holder at any time in use, and be provided with breach near place, body of rod bottom at reinforcement, the outside, breach top is provided with projection, the finger holder surface corresponding with breach place reinforcement is provided with resistance and ruins part, fixedly connected and the finger holder surface, bottom of part is ruined in resistance, its inside edge, top is connected with the outer edge point of the vertical projection of breach, when not using, ruin part because of resistance and have certain width, its top just in time props up the outer, lower end of syringe jacket, produce self-destruction because of malfunction when this structure can prevent syringe assembling or collision, cause the syringe accident to scrap, when preparing to use, only need one hand slightly firmly to press resistance and ruin part, the point junction of itself and breach outer edge just can disconnect, and under the guiding of chamfering, the part upper end is ruined in resistance will easily slip into the projection inboard, because there is certain thickness in projection, its medial wall is not established any chamfering again, moreover the thickness of the thickness of part greater than reinforcement is ruined in resistance, so ruining part, resistance slips into rear flank in the projection, can not skid off again, guarantee that syringe in use is not subjected to its influence, this product structure advantages of simple, the easily demoulding, practical, stability is high, and is simple to operate, but only need just complete operation of one hand, safety self-destruct is effective, and the scope of application is extensive, is easy to apply.

Description of drawings:

Fig. 1 is this utility model structural representation.

Fig. 2 is this utility model user mode sketch map.

Fig. 3 is this utility model imbibition view.

Fig. 4 is this utility model self-destruction view.

Fig. 5 is this utility model jacket structure sketch map.

Fig. 6 is this utility model core bar structure sketch map.

Fig. 7 is this utility model Connection Block structural representation.

Fig. 8 is this utility model needle holder structural representation.

Fig. 9 is this utility model core bar end enlarged drawing.

The specific embodiment:

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

This utility model is a kind of safety self-destructing syringe of exchangeable needle, as Fig. 1 as shown in it, it mainly comprises overcoat 1, needle holder 11, the needle holder end is provided with needle point 5, be arranged on the core bar 2 in the overcoat, the body of rod place of core bar is provided with reinforcement 8, the core bar place is socketed with plug 3, the body of rod place of core bar front end is provided with groove 6, be provided with the part 7 of pulling back in the groove 6, it is characterized in that: be provided with Connection Block 4 in the tube neck of overcoat front end, Connection Block is formed by connecting by outer wall 9 and inwall 10, they are cylindrical structure, become concentric circular to connect, be provided with the gap between outer wall 9 and the inwall 10, the inwall place of Connection Block is socketed with needle holder 11, outer wall 9 inboards are provided with screw thread 12, the outside, needle holder 11 bottoms is provided with threaded collar 13, such structural design makes needle holder can screw in the Connection Block, so also just can change needle holder as required at any time, the body of rod place of core bar can be provided with four reinforcements 8, a reinforcement 8 is provided with breach 16 near place, body of rod bottom therein, the breach top is provided with projection 17 near the outside, the finger holder surface corresponding with breach place reinforcement is provided with resistance and ruins part 18, the bottom that part is ruined in resistance is fixedly connected on finger holder surface, its inside edge, top is connected with the outer edge point of the vertical projection of breach, overcoat front end tube neck opening part inboard is fixed with spacing ring 14, can prevent Connection Block in assembling or in using to advancing slip place tube neck, outside, Connection Block outer wall lower end is provided with the protruding circle 15 of sealing, can play good sealing effectiveness, and groove 6 can be U-shaped or V-arrangement, the metals that can be provided with U-shaped or V-arrangement in the groove 6 part 7 of pulling back, the part 7 of pulling back can be wire or laminated structure.

In the specific implementation, as shown in fig. 1, the outer, lower end that the part top just in time props up syringe jacket is ruined in resistance before using, and produces self-destruction because of malfunction when this structure can prevent syringe assembling or collision, during use, as shown in Figure 2, only need an one hand slightly firmly to press resistance and ruin part, the some junction of itself and breach outer edge just can disconnect, under the guiding of chamfering, the part upper end is ruined in resistance will easily slip into the projection inboard, because there is certain thickness in projection, its medial wall is not established any chamfering again, moreover, the thickness of the thickness of part greater than reinforcement is ruined in resistance, slips into rear flank in the projection so part is ruined in resistance, can not skid off again, guarantee that syringe in use is not subjected to its influence, begin to draw medicinal liquid this moment, as shown in Figure 3, sucks start injection behind the medicinal liquid, up to the complete dieback of core bar, the part of pulling back is stuck in needle holder, at this moment successively spurs core bar, under the effect of the part of pulling back, needle holder is drawn in the overcoat together with Connection Block, as shown in Figure 4, roll over core bar at last, reach the effect of safety self-destruct.

Claims

1, a kind of safety self-destructing syringe of exchangeable needle, it mainly comprises overcoat (1), needle holder (11), the needle holder end is provided with needle point (5), be arranged on the core bar (2) in the overcoat, the body of rod place of core bar is provided with reinforcement (8), the core bar place is socketed with plug (3), and the body of rod place of core bar front end is provided with groove (6), is provided with the part of pulling back (7) in the groove (6), it is characterized in that: be provided with Connection Block (4) in the tube neck of overcoat front end, Connection Block is formed by connecting by outer wall (9) and inwall (10), and they are cylindrical structure, becomes concentric circular to connect, be provided with the gap between outer wall (9) and the inwall (10), the inwall place of Connection Block is socketed with needle holder (11).

2, the safety self-destructing syringe of a kind of exchangeable needle according to claim 1, it is characterized in that: the body of rod place of core bar can be provided with four reinforcements (8), reinforcement (8) is provided with breach (16) near place, body of rod bottom, the breach top is provided with projection (17) near the outside, the finger holder surface corresponding with breach place reinforcement is provided with resistance and ruins part (18), the bottom that part is ruined in resistance is fixedly connected on finger holder surface, and its inside edge, top is connected with the outer edge point of the vertical projection of breach.

3, the safety self-destructing syringe of a kind of exchangeable needle according to claim 1 is characterized in that: outer wall (9) inboard is provided with screw thread (12).

4, the safety self-destructing syringe of a kind of exchangeable needle according to claim 1 is characterized in that: the outside, needle holder (11) bottom is provided with threaded collar (13).

5, the safety self-destructing syringe of a kind of exchangeable needle according to claim 1 is characterized in that: overcoat front end tube neck opening part inboard is fixed with spacing ring (14).

6, the safety self-destructing syringe of a kind of exchangeable needle according to claim 1 is characterized in that: outside, Connection Block outer wall lower end is provided with sealing protruding circle (15).

7, the safety self-destructing syringe of a kind of exchangeable needle according to claim 1 is characterized in that: groove (6) can be U-shaped or V-arrangement, the metal that can be provided with U-shaped or V-arrangement in the groove (6) part (7) of pulling back.

8, the safety self-destructing syringe of a kind of exchangeable needle according to claim 1 is characterized in that: the part of pulling back (7) can be wire or laminated structure.