CN201791196U

CN201791196U - Safe self-destroying syringe

Info

Publication number: CN201791196U
Application number: CN2010202964545U
Authority: CN
Inventors: 沈挺
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-08-19
Filing date: 2010-08-19
Publication date: 2011-04-13
Anticipated expiration: 2020-08-19

Abstract

The utility model discloses a safe self-destroying syringe, which is characterized in that a needle head is cylindrical, a needle seat is arranged at the lower part of the syringe, two ribs which are mutually symmetrical are formed at the needle seat, a gap is formed between the two ribs, an inclined plane inclining inwards is arranged at the inner wall of the rib, the inner wall of the inner side of the inclined plane is provided with an elongated slot, a sealed protruded ring is arranged at the outer wall of the needle seat, a step is formed between the sealed protruded ring and the outer walls of the ribs, the end part of a core rod is provided with a pull-back post, a rubber plug is sheathed at the pull-back post, and the outer wall of the pull-back post of the upper part of the rubber plug is provided with a ring-shaped sealed slot. The syringe adopts the needle part with whole pull-back post structure, the conception of the locking structure of the core rod and the needle seat is smart, the residual quantity of liquid medicine can be effectively reduced, and the work state of the locking mechanism is stable. The safe self-destroying syringe has good functionality, reasonable whole structural design of the product and simple moulding and demoulding processes, can realize the full-automatic assembly, and has good practicability. Compared with the prior art, the safe self-destroying syringe has prominent substantive characteristics and significant progress.

Description

A kind of safety self-destructing syringe

Technical field:

This utility model relates to technical field of medical, a kind of specifically syringe needle the pull back safety self-destructing syringe of structure, particularly its mechanical connecting structure of having.

Background technology:

Documents, number of patent application: 200710124562.7, patent name: automatic whip-back needle safety self-breaking syringe, notification number: CN101161304, patentee: Shenzhen Lijunda Technology Development Co., Ltd., this case discloses a kind of automatic whip-back needle safety self-breaking syringe, comprises a syringe, a push rod tube, a push rod seal circle, a connecting seat, a buckle connecting rod, a resilience rubber band; Syringe comprises a cylindrical shell, offers a hook groove on the top inwall of cylindrical shell, and the bottom end opening place of cylindrical shell is provided with a diapire; The push rod tube comprises that a body of rod, is located at the fixed part of body of rod bottom; The fixed part of corresponding push rod tube is provided with a junction on the push rod seal circle, and connecting portion is connected with fixed part; Connection Block is installed in the push rod seal circle, and Connection Block comprises a body, and the body middle part offers a tank; The buckle connecting rod is installed in the top of Connection Block, and a hook that can corresponding be hooked on the hook groove of cylindrical shell is equipped with on buckle connecting rod top, and buckle connecting rod top is concaved with a groove downwards; The resilience rubber band is the elastic tape of a sealing, and the resilience rubber band is set between the groove of the tank of Connection Block and buckle connecting rod.

Existing safety self-destructing syringe structural design is too complicated, and duty is very unstable, and a lot of project organization very difficult realization in actual die sinking and releasing process, also can't realize full-automatic assembling.

So still need existing safety self-destructing syringe structure is further improved, make it have more practicality and functional.

Summary of the invention:

The purpose of this utility model is to provide a kind of safety self-destructing syringe, and it is simple in structure, and die sinking is convenient in demoulding, and job stability is good, can realize full-automatic assembling, has overcome the shortcoming and defect that exists in the prior art.

To achieve these goals, technical scheme of the present invention is: a kind of safety self-destructing syringe, it mainly comprises overcoat, be provided with core bar in the overcoat, core bar has plug near place, end cover, be provided with syringe needle in the tube neck of overcoat, the syringe needle end is provided with needle tubing and it is characterized in that: described syringe needle is cylindric, and its underpart is a needle stand, the needle stand place forms two symmetrical fins, form the gap between the fin, an opening part in gap forms a closure plate, closes sheet and two fins are into a single integrated structure, and be spliced into a cylindrical part, the intilted inclined-plane of all formation of fin inwall, the inwall place of inboard, inclined-plane is provided with elongated slot, and the needle stand outer wall forms the sealing bulge loop, form step between sealing bulge loop and the fin outer wall, the core bar end is provided with the post of pulling back, and plug is socketed on the post place that pulls back, and the column outer wall place that pulls back on plug top is provided with annular enclosed groove.

A kind of safety self-destructing syringe, it mainly comprises overcoat, be provided with core bar in the overcoat, core bar has plug near place, end cover, be provided with syringe needle in the tube neck of overcoat, the syringe needle end is provided with needle tubing and it is characterized in that: described syringe needle is cylindric, its underpart is a needle stand, the needle stand place forms two symmetrical fins, form the gap between the fin, the two ends in gap all are opening dress, the intilted inclined-plane of all formation of fin inwall, the inwall place of inboard, inclined-plane is provided with elongated slot, the needle stand outer wall forms the sealing bulge loop, forms step between sealing bulge loop and the fin outer wall, and the core bar end is provided with the post of pulling back, plug is socketed on the post place that pulls back, and the column outer wall place that pulls back on plug top is provided with annular enclosed groove.

The utility model discloses a kind of safety self-destructing syringe, it adopts the needle section integral body structure of pulling back, and the locking structure of core bar and needle stand is skillfully constructed, and can effectively reduce the medicinal liquid residual quantity, the locking mechanism stable working state, have well functionally, the product overall construction design is reasonable, and the die sinking releasing process is simple, and can realize full-automatic assembling, have good practicability, compared to existing technologies, have outstanding substantive distinguishing features and marked improvement.

Description of drawings:

Fig. 1 is this utility model structural representation

Fig. 2 is this utility model drawing liquid shape tense sketch map

View when Fig. 3 finishes for this utility model injection

Fig. 4 is the partial enlarged drawing of Fig. 3

Fig. 5 is this utility model safety self-destruct view

Fig. 6 is this utility model plug structural representation

Fig. 7 is this utility model core bar structure sketch map

Fig. 8 is this utility model needle stand first embodiment axonometric chart

Fig. 9 is this utility model needle stand first embodiment profile

Figure 10 is this utility model needle stand second embodiment first axonometric chart

Figure 11 is this utility model needle stand second embodiment second axonometric chart

Figure 12 is this utility model needle stand second embodiment the 3rd axonometric chart

Figure 13 is this utility model general assembly drawing

The specific embodiment:

With reference to the accompanying drawings, it is a kind of safety self-destructing syringe that this utility model further is described this utility model, among first embodiment, it mainly comprises overcoat 1, be provided with core bar 2 in the overcoat 1, core bar 2 has plug 3 near place, end cover, be provided with syringe needle 5 in the tube neck 4 of overcoat 1, syringe needle 5 ends are provided with needle tubing 6, it is different from prior art and is: described syringe needle 5 is cylindric, its underpart is a needle stand 7, needle stand 7 places form two symmetrical fins 8, form gap 9 between the fin 8, one opening part in gap forms a closure plate 19, close sheet 19 and two fins 8 are into a single integrated structure, and be spliced into a cylindrical part, (it is residual that such project organization can reduce medicinal liquid), the intilted inclined-plane 10 of all formation of fin 8 inwalls, the inwall place of 10 inboards, inclined-plane is provided with elongated slot 11, needle stand 7 outer walls form sealing bulge loop 13, form step 14 between sealing bulge loop 13 and fin 8 outer walls, (form good hermetically-sealed construction between sealing bulge loop and the tube neck inwall, can prevent the medicinal liquid seepage, can produce the above frictional force of 15 newton between the two, can prevent that needle section is subjected to displacement when transportation and injection), the end of core bar 2 is provided with the post 15 of pulling back, plug 3 is socketed on post 15 places that pull back, and the outer wall place of the post 15 of pulling back on plug 3 tops is provided with annular enclosed groove 16.

Among second embodiment, it mainly comprises overcoat 1, be provided with core bar 2 in the overcoat 1, core bar 2 has plug 3 near place, end cover, be provided with syringe needle 5 in the tube neck 4 of overcoat 1, syringe needle 5 ends are provided with needle tubing 6, it is different from prior art and is: described syringe needle 5 is cylindric, its underpart is a needle stand 7, and needle stand 7 places form two symmetrical fins 8, forms gap 9 between the fin 8, the two ends in gap 9 all are the opening dress, the intilted inclined-plane 10 of all formation of fin 8 inwalls, the inwall place of 10 inboards, inclined-plane is provided with elongated slot 11, and needle stand 7 outer walls form sealing bulge loop 13, form step 14 between sealing bulge loop 13 and fin 8 outer walls, core bar 2 ends are provided with the post 15 of pulling back, and plug 3 is socketed on post 15 places that pull back, and the outer wall place of the post 15 of pulling back on plug 3 tops is provided with annular enclosed groove 16.

It is residual that such project organization can reduce medicinal liquid.

In the specific implementation, a platform 12 is formed at the top on described inclined-plane 10, and the inwall place of 10 inboards, inclined-plane is provided with the elongated slot 11 that the cross section is a triangle, and the edge of platform 12 protrudes in the inwall on fin 8 tops, and the gap between two fins, 8 inclined-planes is trapezoidal shape.

In the specific implementation, described annular enclosed groove 16 cross sections are trapezoidal shape or triangle.

In the specific implementation, described end of pulling back post 15 is coniform or hemispherical.

In the specific implementation, the end maximum gauge of the described post 15 of pulling back is greater than the distance in gap between two platforms 12.

In the specific implementation, described core bar 2 places are provided with four reinforcements 17 that are in 90 degree angles, and reinforcement 17 places are provided with vee 18.

In the specific implementation, described closure plate 19 outer walls all become circular-arc with inwall.

In the specific implementation, the outer wall of described fin 8 becomes circular-arc.

As shown in fig. 1; be syringe initial condition sketch map; syringe needle is socketed with sheath 20 outward; be used to protect needle section; as shown in Figure 2, pull back core bar and begin to take out medicinal liquid, exhaust medicinal liquid after; as shown in Figure 3; promote core bar forward, when the core bar end is touched mutually with two fins, because fin has certain force of strain; so slightly firmly just the core bar end can be pushed up the gap between two fins; when pulling back core bar, the just in time stuck annular enclosed groove of the edge of fin inclined-plane top platform at the core bar outer wall, the upper wall of annular enclosed groove is positioned at the top of fin platform; so pull back core bar; can take advantage of a situation needle section integral body is drawn in the syringe jacket inner chamber, realize safe effect, when core bar place vee is moved to outside the syringe jacket; take advantage of a situation and utilize vee to fracture, realize perfect self-destruction effect.

Claims

1. safety self-destructing syringe, it mainly comprises overcoat (1), be provided with core bar (2) in the overcoat (1), core bar (2) has plug (3) near place, end cover, be provided with syringe needle (5) in the tube neck (4) of overcoat (1), syringe needle (5) end is provided with needle tubing (6) and it is characterized in that: described syringe needle (5) is cylindric, its underpart is needle stand (7), needle stand (7) locates to form two symmetrical fins (8), form gap (9) between the fin (8), one opening part in gap forms a closure plate (19), it is into a single integrated structure with two fins (8) to close sheet (19), and be spliced into a cylindrical part, the intilted inclined-plane of all formation (10) of fin (8) inwall, inboard inwall place, inclined-plane (10) is provided with elongated slot (11), needle stand (7) outer wall forms sealing bulge loop (13), form step (14) between sealing bulge loop (13) and fin (8) outer wall, core bar (2) end is provided with the post of pulling back (15), plug (3) is socketed on the post of pulling back (15) and locates, and the post of pulling back (15) the outer wall place on plug (3) top is provided with annular enclosed groove (16).

2. safety self-destructing syringe, it mainly comprises overcoat (1), be provided with core bar (2) in the overcoat (1), core bar (2) has plug (3) near place, end cover, be provided with syringe needle (5) in the tube neck (4) of overcoat (1), syringe needle (5) end is provided with needle tubing (6) and it is characterized in that: described syringe needle (5) is cylindric, its underpart is needle stand (7), needle stand (7) locates to form two symmetrical fins (8), form gap (9) between the fin (8), the two ends in gap (9) all are the opening dress, the intilted inclined-plane of all formation (10) of fin (8) inwall, inboard inwall place, inclined-plane (10) is provided with elongated slot (11), needle stand (7) outer wall forms sealing bulge loop (13), forms step (14) between sealing bulge loop (13) and fin (8) outer wall, and core bar (2) end is provided with the post of pulling back (15), plug (3) is socketed on the post of pulling back (15) and locates, and the post of pulling back (15) the outer wall place on plug (3) top is provided with annular enclosed groove (16).

3. a kind of safety self-destructing syringe according to claim 1 and 2, it is characterized in that: a platform (12) is formed at the top of described inclined-plane (10), inboard inwall place, inclined-plane (10) is provided with the elongated slot that the cross section is a triangle (11), the edge of platform (12) protrudes in the inwall on fin (8) top, and the gap between two fins (8) inclined-plane is trapezoidal shape.

4. a kind of safety self-destructing syringe according to claim 1 and 2 is characterized in that: described annular enclosed groove (16) cross section is trapezoidal shape or triangle.

5. a kind of safety self-destructing syringe according to claim 1 is characterized in that: under the pull back end of post (15) be coniform or hemispherical.

6. a kind of safety self-destructing syringe according to claim 1 and 2 is characterized in that: the described post of pulling back (15) end maximum gauge is greater than the distance in gap between two platforms (12).

7. a kind of safety self-destructing syringe according to claim 1 is characterized in that: described closure plate (19) outer wall all becomes circular-arc with inwall.

8. a kind of safety self-destructing syringe according to claim 1 and 2 is characterized in that: the outer wall of described fin (8) becomes circular-arc.