CN102813985A - Safety self-destruction syringe - Google Patents
Safety self-destruction syringe Download PDFInfo
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- CN102813985A CN102813985A CN2011101508703A CN201110150870A CN102813985A CN 102813985 A CN102813985 A CN 102813985A CN 2011101508703 A CN2011101508703 A CN 2011101508703A CN 201110150870 A CN201110150870 A CN 201110150870A CN 102813985 A CN102813985 A CN 102813985A
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Abstract
The invention discloses a safe self-destruction syringe, which is characterized in that: interior needle file body formula monomer structure as an organic whole, annular buffering clearance has been seted up on the spacing base surface of elastic seal, the spacing base outer wall department of elastic seal in the annular buffering clearance outside forms the spacing block portion of annular seal, the core bar tip is equipped with the metal barb body, the syringe adopts single body interior needle file structure, built-in buffering clearance makes interior needle file have certain flexible deformation characteristic, can realize stable block effect with the barrel neck cooperation, and simultaneously, the required pull-back force can be reduced when needle file is taken back to including the buffer zone, make block power and pull-back force reach perfect balance, the syringe realizes stable screens and sealed effect, can not receive external environment's influence, the finished product syringe is easy and simple to handle in the in-service use, required pull-back force is less, whole operating condition is stable, has fine practicality.
Description
Technical field
The present invention relates to technical field of medical, a kind of specifically safety self-destructing syringe, particularly its mechanical connecting structure.
Background technology
Documents one, the patent No.: ZL200410017938.0, the applying date: 2004.04.26; Notification number: CN1689654, the patentee: Shanghai DingJianTang biochemistry Science Co., Ltd, this case discloses " a kind of damage formula safety injector "; Comprise: the core bar in the tube neck of overcoat, outer set upper side and syringe needle, the overcoat is characterized in that: the inner chamber top of tube neck is provided with chimb, the built-in needle holder of inner chamber of tube neck; The inwall of needle holder is a cylindrical hole, and the outer wall of needle holder is provided with the ring-type convex tendon, and is close to the vertical chimb of tube neck inner chamber; Syringe needle places between the inside and outside wall of needle holder, and the top of core bar is provided with endoporus, and an end of barb places in the endoporus; The top of core bar is provided with mounting groove, its built-in sealing ring, and the middle part of core bar is made as six plates; Establish a gathering sill between the plates, the bottom of overcoat is established a spacer and is embedded in the gathering sill.
Documents two, the patent No.: ZL200720067715.4, the applying date: 2007.03.08; Notification number: CN201076648, the patentee: Shanghai DingJianTang biochemistry Science Co., Ltd, this case discloses " a kind of core bar that has the Metallic hook structure "; Comprise: the core bar body, the upper end of core bar body is provided with the column fastener, and column fastener place is socketed with plug; It is characterized in that: said plug place is provided with installing hole, is provided with barbed body in the installing hole.
Documents three, the patent No.: ZL 200720075476.7, the applying date: 2007.10.16, notification number: CN201101783; The patentee: Shanghai DingJianTang biochemistry Science Co., Ltd, this case discloses " a kind of safety self-destructing syringe ", comprising: cylindrical shell; The end of cylindrical shell is the tube neck, is provided with needle holder in the tube neck, is provided with needle tubing in the needle holder; Cylinder lumen is provided with core bar, and the core bar end is provided with plug, it is characterized in that: the top of said core bar is provided with installing hole; Be provided with the S shape hook of pulling back in the installing hole, the S shape hook of pulling back is made up of upper hook body and lower hook body, and following structure body places in the installing hole; Lower hook body becomes V-shape, and a side arm of lower hook body becomes vertical configuration, and parallel with the installing hole inwall and be close to the installing hole inwall; Upper hook body becomes inverted V-shape, and a side arm of upper hook body becomes with a side arm of above-mentioned lower hook body less than the angle of 180 degree greater than 90 degree, and upper hook body becomes inverted V-shape; Breadth Maximum between its both arms is greater than needle holder inner chamber interior diameter, and lower hook body becomes V-shape, and the Breadth Maximum between its both arms is greater than installing hole inner chamber width.
Documents four, the patent No.: ZL200720075475.2, the applying date: 2007.10.16; Notification number: CN201101782, the patentee: Shanghai DingJianTang biochemistry Science Co., Ltd, this case discloses " a kind of safe self-destruction type vaccine injector "; Comprise: cylindrical shell, be provided with core bar in the cylindrical shell, core bar is provided with plug near the place, end; Be provided with syringe needle in the tube neck of cylindrical shell, the syringe needle place is provided with needle tubing, it is characterized in that: the body of rod sidewall of said core bar end is provided with horizontal cut; Vertical breach at horizontal cut and body of rod place, core bar end links, and horizontal cut matches with vertical breach, and syringe needle is socketed to form by last needle stand and following needle stand; Following needle stand inner chamber hollow, following needle stand becomes tubular structure, and following needle stand is provided with down the needle holder convex tendon with respect to the other end opening part inwall of installing needle holder.
Documents five, number of patent application: ZL200910048684.1, the applying date: 2009.04.01; Notification number: CN101850141A, the patentee: Jiangsu hundred million happy medical supplies company limiteies, this case discloses " a kind of safety injector "; Comprise: cylindrical shell; Cylindrical shell is provided with core bar, and the core bar place is socketed with plug, is provided with needle holder in the tube neck of cylindrical shell; The needle holder end is provided with needle tubing; It is characterized in that: said core bar end is provided with the lock cylinder of pulling back safely, and the outer wall place of the lock cylinder of pulling back safely is provided with upper limit binding ring and lower limit binding ring from top to bottom successively, is provided with pull back safely needle holder and the following base of pulling back safely in the tube neck of cylindrical shell end from top to bottom successively; The last safety needle holder of pulling back is pulled back base all in the form of a ring with safety down, and safety is pulled back lock cylinder can be through last safety needle holder and the safety down center position of pulling back of pulling back.
Several kinds of relatively more typical needle stand haulback safety syringes or safe self-breaking syringe are disclosed in the above-mentioned documents; Its design fundamentals are after utilizing pull back parts and the local interlock of the interior needle stand of syringe that is arranged on the core bar end; Utilize the pull-back forces of core bar that needle section integral body is returned to the syringe cylinder intracoelomic cavity, realize safety or safety self-destruct effect.
Two kinds of forms of the general employing of the parts of pulling back of core bar end, one of which is the metal barb; Utilize the elastic characteristic of metalwork, realize the local locks with respect of barbed body and interior needle stand, they are two years old; Be the cylinder part of pulling back; Generally be provided with the snap-lock structure of protrusion, match, realize local locks with respect with interior needle stand with interior needle stand internal structure at cartridge outer surface.
The original design of existing this type of interior needle stand haulback type safety or safety self-destructing syringe is to adopt needle stand structure in the monomer; But in the reality test, find; When interior needle stand and cylindrical shell tube cervical region reach when engaging standard, pull-back forces required during interior needle stand pumpback is bigger, causes syringe can't realize safety operation; And when the required pull-back forces of interior needle stand reaches ideal value; Interior needle stand and cylindrical shell tube cervical region engage effect and sealing effectiveness is not satisfactory because the defective that exists on the needle stand self structure in the existing monomer and the characteristic of material itself can't reach the equilibrium point between engaging power and the pull-back forces all the time.
For these reasons; Develop a kind of split type crosspointer seat haulback type safety or safety self-destructing syringe; The general crosspointer holder structure up and down that adopts during its design; Last needle stand is realized the function that engages with injector cartridge tube cervical region, and following needle stand realization and the interlock function between the parts of pulling back utilize bite to connect between last needle stand and the following needle stand.
There are problems in needle stand in actual production with in using in split type, one of which, and the die cost of needle stand is higher up and down, die sinking technology more complicated; Often can't a stripping forming, need carry out the secondary demoulding, its two, split type up and down needle stand is when assembly process; Occur rigging error easily, cause product rejection, simultaneously, increased assembly difficulty; Its three, split type up and down needle stand in actual use, it is malfunctioning operation to occur easily, the stability under working conditions of syringe is relatively poor.
In sum, still need the structure of existing needle stand haulback type safety or safety self-destructing syringe be further improved, develop and a kind ofly can satisfy engaging power and pull-back forces simultaneously, and have needle stand structure in the monomer of sealing effectiveness.
Summary of the invention
The object of the present invention is to provide a kind of safety self-destructing syringe; It adopts needle stand structure in the single-body type, and interior needle stand portion forms the relief area with elastic telescopic function, has overcome the defective that the material self character brings; Gmatjpdumamics and sealing in the elastic buffer district can guarantee between needle stand and the tube neck; And required pulling force when needle stand is pulled back in when interior needle stand pumpback, reducing, make two key elements of contradiction own reach an optimal balance point, cooperate " O " shape sealing rubber circle can guarantee the complete sealing effectiveness of interior needle stand and syringe cylinder cervical region; Needle stand can a stripping forming in this integral type; Stable working state can realize one-handed performance, 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, and it comprises cylindrical shell; Be provided with core bar in the cylindrical shell, the core bar place is socketed with plug, needle stand body in being provided with in the tube neck of cylindrical shell; Interior needle stand body lower end offers the latch well of pulling back, and the end of interior needle stand body is provided with needle tubing, it is characterized in that: needle stand body place is provided with the needle tubing pedestal in said; With constitute with the spacing pedestal of the into a single integrated structure elastic packing of needle tubing pedestal; Both are integral the formula monomer structure, and formation circular step or ring-type are domatic between the spacing pedestal of needle tubing pedestal and elastic packing, and the spacing base-plates surface of elastic packing offers the ring-type buffer gap; The spacing base outer wall of the elastic packing place in the outside, ring-type buffer gap forms the spacing holding section of annular seal, and the core bar end is provided with the metal barbed body.
A kind of safety self-destructing syringe, it comprises cylindrical shell, is provided with core bar in the cylindrical shell; The core bar place is socketed with plug, needle stand body in being provided with in the tube neck of cylindrical shell, and interior needle stand body lower end offers the latch well of pulling back; The end of interior needle stand body is provided with needle tubing; It is characterized in that: said interior needle stand body place is provided with the needle tubing pedestal and constitutes with the into a single integrated structure spacing pedestal of elastic packing of needle tubing pedestal, and both become split type assembly structure; Formation circular step or ring-type are domatic between the spacing pedestal of needle tubing pedestal and elastic packing; The spacing base-plates surface of elastic packing offers the ring-type buffer gap, and the spacing base outer wall of the elastic packing place in the outside, ring-type buffer gap forms the spacing holding section of annular seal, and the core bar end is provided with the metal barbed body.
The invention discloses a kind of safety self-destructing syringe, syringe adopts needle stand structure in the single-body type, and overall construction design is reasonable, and the design of buffer part is very ingenious; Needle stand had certain dilatation characteristic in built-in buffer gap made, can cooperate with the tube neck to realize the stable effect that engages, and simultaneously, relief area can reduce required pull-back forces when interior needle stand pumpback; Make engaging power and pull-back forces reach perfect balance, but interior needle stand single injection-molded has effectively lowered manufacturing cost; Simplified manufacturing process, syringe is realized stable screens and sealing effectiveness, can not receive the influence of external environment condition; The finished product syringe is easy and simple to handle in actual use, and required pull-back forces is less, and overall operation is in stable condition; Have good practicability, compared to existing technologies, have outstanding substantive distinguishing features and marked improvement.
Description of drawings
Fig. 1 is first embodiment of the invention original state figure.
Fig. 2 is first embodiment of the invention user mode figure.
Fig. 3 is first embodiment of the invention safety self-destruct shape figure.
Fig. 4 is second embodiment of the invention original state figure.
Fig. 5 is second embodiment of the invention user mode figure.
Fig. 6 is second embodiment of the invention safety self-destruct shape figure.
Fig. 7 is an interior needle stand body construction sketch map in the first embodiment of the invention.
Fig. 8 is an interior needle stand body construction sketch map in the second embodiment of the invention.
Fig. 9 is a tube structure sketch map of the present invention.
Figure 10 is a core bar structure sketch map of the present invention.
The specific embodiment
With reference to the accompanying drawings, the present invention is further described.
The present invention is a kind of safety self-destructing syringe, and is as shown in fig. 1, is the first embodiment of the invention structural representation; It mainly comprises cylindrical shell 1, is provided with core bar 2 in the cylindrical shell 1, and core bar 2 places are socketed with plug 3; Needle stand body 21 in being provided with in the tube neck 4 of cylindrical shell 1, interior needle stand body 21 lower ends offer the latch well 5 of pulling back, and the end of interior needle stand body 1 is provided with needle tubing 12; It is characterized in that: needle stand body 1 place is provided with needle tubing pedestal 6 in said; With constitute with the into a single integrated structure spacing pedestals 7 of elastic packing of needle tubing pedestal 3, both are integral the formula monomer structure, formation circular step 8 or ring-type are domatic between the spacing pedestal 7 of needle tubing pedestal 6 and elastic packing; Said circular step 8 places are socketed with " O " shape sealing rubber circle 14, and (" O " shape sealing rubber circle 14 can match with tube neck inwall; Realize sealing effectiveness, effectively prevent the leakage of syringe front end), the spacing pedestal of elastic packing 7 surfaces offer ring-type buffer gap 9; The spacing pedestal of the elastic packing in 9 outsides, ring-type buffer gap 7 outer wall places form the spacing holding section 10 of annular seal, and core bar 2 ends are provided with metal barbed body 11.
Safety self-destructing syringe of the present invention can also have another kind of split-type structural, and it comprises cylindrical shell 1, is provided with core bar 2 in the cylindrical shell 1; Core bar 2 places are socketed with plug 3, needle stand body 21 in being provided with in the tube neck 4 of cylindrical shell 1, and interior needle stand body 21 lower ends offer the latch well 5 of pulling back; The end of interior needle stand body 1 is provided with needle tubing 12, it is characterized in that: said interior needle stand body 1 place is provided with needle tubing pedestal 6 and constitutes with the needle tubing pedestal 3 into a single integrated structure spacing pedestals 7 of elastic packing; Both become split type assembly structure; Formation circular step 8 or ring-type are domatic between the spacing pedestal 7 of needle tubing pedestal 6 and elastic packing, and said circular step 8 places are socketed with " O " shape sealing rubber circle 14, and (" O " shape sealing rubber circle 14 can match the realization sealing effectiveness with tube neck inwall; Effectively prevent the leakage of syringe front end); The spacing pedestal of elastic packing 7 surfaces offer ring-type buffer gap 9, and the spacing pedestal of the elastic packing in 9 outsides, ring-type buffer gap 7 outer wall places form the spacing holding section 10 of annular seal, and the surface of the spacing holding section 10 of annular seal becomes arc surfaced; Be convenient to guiding, core bar 2 ends are provided with metal barbed body 11.
In the specific implementation; The height of said ring-type buffer gap 9 notches to bottom land is 0.1mm-20mm; The width of ring-type buffer gap 9 is 0.1mm-20mm; The distance on 10 surperficial cambered surface arc tops, the spacing holding section of ring-type buffer gap 9 outside cell walls and annular seal is 0.1mm-20mm; Distance between cell wall notch place, 9 outside, ring-type buffer gap and the spacing holding section of annular seal 10 outer walls is 0.1mm-20mm, and the distance between cell wall bottom land place, 9 outside, ring-type buffer gap and the spacing holding section of annular seal 10 outer walls is 0.1mm-20mm.
In the specific implementation, 10 surfaces, the spacing holding section of said annular seal become arc surfaced, and its arc pushes up to the distance of cambered surface top edge and pushes up to the distance of cambered surface lower limb less than arc, and needle stand was deviate from the tube neck in this structure was convenient to.
In the specific implementation, the spacing pedestal of the elastic packing 7 outer wall places of 10 bottoms, the spacing holding section of said annular seal form annular recess 13, and the bottom land of annular recess 13 and ring-type buffer gap 9 is positioned at same horizontal plane or is higher than the bottom land of ring-type buffer gap 9.
In the specific implementation, spacing pedestal 7 upper surfaces of said elastic packing offer ring-type buffer gap 9.
In the specific implementation, spacing pedestal 7 lower surfaces of said elastic packing offer ring-type buffer gap 9.
In the specific implementation, as shown in Figure 7,6 one-tenth bar shapes of said needle tubing pedestal, the spacing pedestal 7 of elastic packing is arranged at needle tubing pedestal 6 at, and both are integrally formed formula monomer structure or split type assembly structure.
In the specific implementation, 6 one-tenth bar shapes of said needle tubing pedestal, the spacing pedestal 7 of elastic packing is arranged at needle tubing pedestal 6 cylinder middle sections, and both are integrally formed formula monomer structure or split type assembly structure.
In the specific implementation, as shown in Figure 8,6 one-tenth bar shapes of said needle tubing pedestal, the spacing pedestal 7 of elastic packing are arranged at place, needle tubing pedestal 6 tops, and both are integrally formed formula monomer structure or split type assembly structure.
In the specific implementation; 10 places, the spacing holding section of annular seal of spacing pedestal 7 outer walls of said elastic packing form some breach or cut off line; Said structure plays miscellaneous function, is convenient to the spacing holding section of annular seal dilatation, the resistance when needle stand is pulled back in reducing.
In the specific implementation; As shown in Figure 10; Said metal barbed body 11 is formed by elemental metals line or sheet metal bending, and its first linking arm, 15 1 ends are fixedly connected with core bar 2 ends, forms the arc knuckle 17 of 1 degree-179 degree between first linking arm, 15 other ends and second linking arm, 16 1 ends; Second linking arm, 16 other ends and elastic arm 18 1 ends form arc drift angle 19 at metal barbed body 11 top ends, and elastic arm 18 other ends are unsettled.
In the specific implementation; As shown in Figure 9; The tube neck 4 inwall places of said cylindrical shell 1 are provided with the spacing depression 20 of annular seal that matches with the spacing holding section 10 of annular seal; The degree of depth of the spacing depression 20 of annular seal is 0.1mm-20mm, and the height of the spacing depression 20 of annular seal is 0.1mm-20mm, and the concave bottom of the spacing depression 20 of annular seal becomes arc surfaced.
As shown in fig. 1, interior needle stand body 1 is assembled into the syringe cylinder intracoelomic cavity from the rear portion, and its relief area is that ring-type buffer gap 9 is set at interior needle stand near lower end with the spacing holding section 10 of annular seal; The overall diameter of the spacing holding section 10 of annular seal is less than cylindrical shell tube neck interior diameter, but owing to be provided with ring-type buffer gap 9, so the spacing holding section 10 of annular seal is when receiving the pressure of a neck inwall; Can produce trickle distortion to the centre bit pressurized, and so the outer surface of the spacing holding section 10 of annular seal becomes cambered surface, so have guide effect; Very along sliding, be provided with the spacing depression 20 of annular seal that matches with the spacing holding section 10 of annular seal in the tube neck, when the spacing holding section 10 of annular seal is moved to here when needle stand is assembled in the neck in making; The spacing holding section 10 of annular seal is just slipped in the spacing depression 20 of annular seal, and at this moment, the pressure that acts on the spacing holding section 10 of annular seal disappears or the part disappearance; The distortion that resets of the spacing holding section 10 of annular seal; Engage with the spacing depression 20 of annular seal, the spacing holding section of annular seal 10 outer walls are close to spacing depression 20 inwalls of annular seal, a needle stand and a spacing sealing effectiveness at neck place in realizing; Shown in figure; Be provided with core bar 2 in the cylindrical shell 1, the end of core bar 2 is socketed with plug 3, and the end of core bar 2 is assembled with metal barbed body 11.
As shown in Figure 2, syringe is brought into use, and promotes core bar forward; The metal barbed body of core bar end is subjected to displacement forward, and the end of metal barbed body forms a crooked rebate, and the width of rebate is slightly less than or the intracavity diameter of the latch well 5 that equals to pull back; So the end of barbed body is easy to get in the latch well 5 of pulling back, and, though the rear portion width of metal barbed body is greater than the interior diameter of the latch well 5 of pulling back; But because the rebate of end has elastic characteristic, so the top of metal barb crooked rebate two-side elastic arm is easy to pressurized deflection to the inside, at this moment; The interior angle of rebate diminishes, and so, the metal barbed body just can insert in the latch well of pulling back fully.
As shown in Figure 3, after the metal barbed body gets in the latch well of pulling back,, and can apply opposition laterally after angle diminishes in the rebate of metal barbed body top because metalwork has elastic characteristic; This opposition passes to the latch well inwall place that pulls back through metal barb two-side elastic arm, at this moment, and the pulled backwards core bar; Because the end of an elastic arm of metal barbed body is unsettled, and the end of another elastic arm forms reverse knuckle; Causing the metal barb is not vertical fully the insertion in the latch well of pulling back, and can produce deflection slightly during insertion, so the free end of elastic arm can be bigger with the angle of the latch well inwall of pulling back; During the pulling core bar, the metal barbed body is reversed pulling, and the free end of elastic arm is easy to insert the latch well inwall of pulling back; At this moment, the core bar end relies on the metal barbed body interior needle stand firmly to be locked the pulling core bar of taking advantage of a situation; Interior needle stand is taken out of in the tube neck of cylindrical shell, because the cambered surface radian of the spacing holding section of annular seal 10 outer lower edge is more slow, so after the central compression distortion, be easy to deviate from the spacing depression from annular seal; The reverse knuckle that the elastic arm bottom forms continues the pulled backwards core bar, draws in cylinder lumen fully, owing to can make needle section change to a lateral deviation until whole needle section; Cause needle tubing to depart from a neck fully, needle section can't be once more from newly being assembled in the neck, at this moment; Promote core bar more forward,, so become the whole safety self-destruct operation of having accomplished syringe the syringe tip bending.
Above content is to combine concrete preferred implementation to the further explain that the present invention did, and can not assert that practical implementation of the present invention is confined to above-mentioned these explanations.For the those of ordinary skill of technical field under the present invention, under the prerequisite that does not break away from the present invention's design, can also make some simple deduction or replace, all should be regarded as belonging to protection scope of the present invention.
Claims (16)
1. safety self-destructing syringe; It comprises cylindrical shell (1), is provided with core bar (2) in the cylindrical shell (1), and core bar (2) locates to be socketed with plug (3); Needle stand body (21) in being provided with in the tube neck (4) of cylindrical shell (1); Interior needle stand body (21) lower end offers the latch well of pulling back (5), and the end of interior needle stand body (1) is provided with needle tubing (12), it is characterized in that: needle stand body (1) locates to be provided with needle tubing pedestal (6) in said; With constitute with the into a single integrated structure spacing pedestal of elastic packing (7) of needle tubing pedestal (3); Both are integral the formula monomer structure, form circular step (8) between needle tubing pedestal (6) and the spacing pedestal of elastic packing (7) or ring-type domatic, the spacing pedestal of elastic packing (7) surface offers ring-type buffer gap (9); The spacing pedestal of elastic packing (7) the outer wall place in the outside, ring-type buffer gap (9) forms the spacing holding section of annular seal (10), and core bar (2) end is provided with metal barbed body (11).
2. safety self-destructing syringe; It comprises cylindrical shell (1), is provided with core bar (2) in the cylindrical shell (1), and core bar (2) locates to be socketed with plug (3); Needle stand body (21) in being provided with in the tube neck (4) of cylindrical shell (1); Interior needle stand body (21) lower end offers the latch well of pulling back (5), and the end of interior needle stand body (1) is provided with needle tubing (12), it is characterized in that: needle stand body (1) locates to be provided with needle tubing pedestal (6) in said; With constitute with the into a single integrated structure spacing pedestal of elastic packing (7) of needle tubing pedestal (3); Both become split type assembly structure, form circular step (8) between needle tubing pedestal (6) and the spacing pedestal of elastic packing (7) or ring-type domatic, the spacing pedestal of elastic packing (7) surface offers ring-type buffer gap (9); The spacing pedestal of elastic packing (7) the outer wall place in the outside, ring-type buffer gap (9) forms the spacing holding section of annular seal (10), and core bar (2) end is provided with metal barbed body (11).
3. a kind of safety self-destructing syringe according to claim 1; It is characterized in that: the height of said ring-type buffer gap (9) notch to bottom land is 0.1mm-20mm; The width of ring-type buffer gap (9) is 0.1mm-20mm; The distance on ring-type buffer gap (9) outside cell wall and the spacing holding section of annular seal (10) surperficial cambered surface arc top is 0.1mm-20mm; Distance between cell wall notch place, the outside, ring-type buffer gap (9) and the spacing holding section of annular seal (10) outer wall is 0.1mm-20mm, and the distance between ring-type buffer gap (9) cell wall bottom land place, the outside and the spacing holding section of annular seal (10) outer wall is 0.1mm-20mm.
4. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the surface of the spacing holding section of annular seal (10) becomes arc surfaced.
5. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the spacing holding section of said annular seal (10) surface becomes arc surfaced, and its arc pushes up to the distance of cambered surface top edge and pushes up to the distance of cambered surface lower limb less than arc.
6. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the spacing pedestal of elastic packing (7) the outer wall place of bottom, the spacing holding section of said annular seal (10) forms annular recess (13).
7. a kind of safety self-destructing syringe according to claim 6 is characterized in that: the bottom land of said annular recess (13) and ring-type buffer gap (9) is positioned at same horizontal plane or is higher than the bottom land of ring-type buffer gap (9).
8. a kind of safety self-destructing syringe according to claim 1 is characterized in that: said circular step (8) locates to be socketed with " O " shape sealing rubber circle (14).
9. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the spacing pedestal of said elastic packing (7) upper surface offers ring-type buffer gap (9).
10. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the spacing pedestal of said elastic packing (7) lower surface offers ring-type buffer gap (9).
11. a kind of safety self-destructing syringe according to claim 1; It is characterized in that: said needle tubing pedestal (6) becomes bar shape; The spacing pedestal of elastic packing (7) is arranged at needle tubing pedestal (6) at, and both are integrally formed formula monomer structure or split type assembly structure.
12. a kind of safety self-destructing syringe according to claim 1; It is characterized in that: said needle tubing pedestal (6) becomes bar shape; The spacing pedestal of elastic packing (7) is arranged at needle tubing pedestal (6) cylinder middle section, and both are integrally formed formula monomer structure or split type assembly structure.
13. a kind of safety self-destructing syringe according to claim 1; It is characterized in that: said needle tubing pedestal (6) becomes bar shape; The spacing pedestal of elastic packing (7) is arranged at place, needle tubing pedestal (6) top, and both are integrally formed formula monomer structure or split type assembly structure.
14. a kind of safety self-destructing syringe according to claim 1 is characterized in that: the spacing holding section of annular seal (10) of the spacing pedestal of said elastic packing (7) outer wall is located to form some breach or is cut off line.
15. a kind of safety self-destructing syringe according to claim 1; It is characterized in that: said metal barbed body (11) is formed by elemental metals line or sheet metal bending; Its first linking arm (15) one ends are fixedly connected with core bar (2) end; Form the arc knuckle (17) of 1 degree-179 degree between first linking arm (15) other end and second linking arm (16) one ends; Second linking arm (16) other end and elastic arm (18) one ends form arc drift angle (19) at metal barbed body (11) top end, and elastic arm (18) other end is unsettled.
16. a kind of safety self-destructing syringe according to claim 1; It is characterized in that: tube neck (4) the inwall place of said cylindrical shell (1) is provided with the spacing depression of annular seal (20) that matches with the spacing holding section of annular seal (10); The degree of depth of the spacing depression of annular seal (20) is 0.1mm-20mm; The height of the spacing depression of annular seal (20) is 0.1mm-20mm, and the concave bottom of the spacing depression of annular seal (20) becomes arc surfaced.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110150870.3A CN102813985B (en) | 2011-06-07 | 2011-06-07 | Safety self-destruction syringe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110150870.3A CN102813985B (en) | 2011-06-07 | 2011-06-07 | Safety self-destruction syringe |
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| CN102813985A true CN102813985A (en) | 2012-12-12 |
| CN102813985B CN102813985B (en) | 2016-09-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013127257A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Plunger structure for use in retractable-type safe self-destructing syringe |
| WO2013127259A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | A needle retractable-type replaceable-needle safe self-destructing syringe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2013127257A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Plunger structure for use in retractable-type safe self-destructing syringe |
| WO2013127259A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | A needle retractable-type replaceable-needle safe self-destructing syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102813985B (en) | 2016-09-21 |
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Effective date of registration: 20220428 Address after: 401346 1-1 and 1-2, building 1, No. 16, Shigui Avenue, Jieshi Town, Banan District, Chongqing Patentee after: Chongqing pharmaceutical group Weixun Medical Technology Co.,Ltd. Address before: 200336 Room 301, No. 25, Lane 99, huangjincheng Road, Changning District, Shanghai Patentee before: Wang Zuyang |
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