CN202105275U - Safe self-destruction syringe - Google Patents
Safe self-destruction syringe Download PDFInfo
- Publication number
- CN202105275U CN202105275U CN2011201887508U CN201120188750U CN202105275U CN 202105275 U CN202105275 U CN 202105275U CN 2011201887508 U CN2011201887508 U CN 2011201887508U CN 201120188750 U CN201120188750 U CN 201120188750U CN 202105275 U CN202105275 U CN 202105275U
- Authority
- CN
- China
- Prior art keywords
- spacing
- pedestal
- annular seal
- ring
- elastic packing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000002184 metal Substances 0.000 claims abstract description 29
- 229910052751 metal Inorganic materials 0.000 claims abstract description 29
- 238000007789 sealing Methods 0.000 claims abstract description 16
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 71
- 238000012856 packing Methods 0.000 claims description 38
- 239000000178 monomer Substances 0.000 claims description 12
- 210000002421 cell wall Anatomy 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 210000003141 lower extremity Anatomy 0.000 claims description 2
- 150000002739 metals Chemical class 0.000 claims description 2
- 244000208734 Pisonia aculeata Species 0.000 abstract description 11
- 230000000694 effects Effects 0.000 abstract description 6
- 230000003139 buffering effect Effects 0.000 abstract 4
- 239000007795 chemical reaction product Substances 0.000 abstract 1
- 230000008602 contraction Effects 0.000 abstract 1
- 238000013461 design Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 210000002435 tendon Anatomy 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229960005486 vaccine Drugs 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/3223—Means impeding or disabling repositioning of used needles at the syringe nozzle
- A61M2005/3224—Means to disalign the needle tip and syringe nozzle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/178—Syringes
- A61M5/31—Details
- A61M5/32—Needles; Details of needles pertaining to their connection with syringe or hub; Accessories for bringing the needle into, or holding the needle on, the body; Devices for protection of needles
- A61M5/3205—Apparatus for removing or disposing of used needles or syringes, e.g. containers; Means for protection against accidental injuries from used needles
- A61M5/321—Means for protection against accidental injuries by used needles
- A61M5/322—Retractable needles, i.e. disconnected from and withdrawn into the syringe barrel by the piston
- A61M5/3221—Constructional features thereof, e.g. to improve manipulation or functioning
- A61M2005/323—Connection between plunger distal end and needle hub proximal end, e.g. stud protruding from the plunger
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Environmental & Geological Engineering (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a safe self-destruction syringe, which is characterized in that an inner needle base body is in the structure of an integral single body, an annular buffering gap is disposed on the surface of an elastic seal limit base, an annular seal limit clamping part is formed on the outer wall of the elastic seal limit base on the outer side of the annular buffering gap, and a metal barb body is arranged at the end of a core bar. The syringe adopts the structure of a single body type inner needle base, and the built-in buffering gap enables the inner needle base to have some properties of deformation of expansion and contraction so that the inner needle base can be matched with a cylinder neck to achieve stable clamping effect. Meanwhile, a buffering area can reduce required pull-back force when the inner needle base is withdrawn so that clamping force and pull-back force can achieve perfect balance, and the syringe can achieve stable clamping and sealing effects and cannot be affected by outside environment. An end product syringe is simple and convenient in operations of actual use, requires less pull-back force, and is stable in entire work status and very practical.
Description
Technical field
This utility model 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 purpose of this utility model 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, the technical scheme of this utility model 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 utility model 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 this utility model first embodiment original state figure.
Fig. 2 is this utility model first embodiment user mode figure.
Fig. 3 is this utility model first embodiment safety self-destruct shape figure.
Fig. 4 is this utility model second embodiment original state figure.
Fig. 5 is this utility model second embodiment user mode figure.
Fig. 6 is this utility model second embodiment safety self-destruct shape figure.
Fig. 7 is an interior needle stand body construction sketch map among this utility model first embodiment.
Fig. 8 is an interior needle stand body construction sketch map among this utility model second embodiment.
Fig. 9 is this utility model tube structure sketch map.
Figure 10 is this utility model core bar structure sketch map.
The specific embodiment
With reference to the accompanying drawings, this utility model is further described.
This utility model is a kind of safety self-destructing syringe, and is as shown in fig. 1, is this utility model first example structure sketch map; 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 21 is provided with needle tubing 12; It is characterized in that: needle stand body 21 places are 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 6, 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.
The described safety self-destructing syringe of this utility model 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 21 is provided with needle tubing 12, it is characterized in that: said interior needle stand body 21 places are provided with needle tubing pedestal 6 and constitute with the needle tubing pedestal 6 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 21 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 the further explain that combines concrete preferred implementation that this utility model is done, and can not assert that this utility model practical implementation is confined to above-mentioned these explanations.For the those of ordinary skill of technical field under this utility model, under the prerequisite that does not break away from this utility model design, can also make some simple deduction or replace, all should be regarded as belonging to the protection domain of this utility model.
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 (21) is provided with needle tubing (12), it is characterized in that: needle stand body (21) 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 (6); 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 (21) is provided with needle tubing (12), it is characterized in that: needle stand body (21) 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 (6); 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.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201887508U CN202105275U (en) | 2011-06-07 | 2011-06-07 | Safe self-destruction syringe |
| PCT/CN2012/000759 WO2012167604A1 (en) | 2011-06-07 | 2012-06-04 | Safe self-destructive syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201887508U CN202105275U (en) | 2011-06-07 | 2011-06-07 | Safe self-destruction syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202105275U true CN202105275U (en) | 2012-01-11 |
Family
ID=45430729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201887508U Expired - Fee Related CN202105275U (en) | 2011-06-07 | 2011-06-07 | Safe self-destruction syringe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202105275U (en) |
| WO (1) | WO2012167604A1 (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102813985A (en) * | 2011-06-07 | 2012-12-12 | 王祖扬 | Safety self-destruction syringe |
| WO2012167604A1 (en) * | 2011-06-07 | 2012-12-13 | 倍安德普医疗科技（上海）有限公司 | Safe self-destructive syringe |
| WO2012167605A1 (en) * | 2011-06-07 | 2012-12-13 | 倍安德普医疗科技（上海）有限公司 | Internal needle seat structure for safe self-destructive syringe |
| WO2013010376A1 (en) * | 2011-07-18 | 2013-01-24 | 倍安德普医疗科技（上海）有限公司 | Inner needle seat of exchangeable needle for safety self-destructing syringe |
| WO2013010373A1 (en) * | 2011-07-18 | 2013-01-24 | 倍安德普医疗科技（上海）有限公司 | Safety self-disposable syringe with replaceable needle |
| WO2013127040A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Plunger for use in retractable-type safe self-destructing syringe |
| WO2013127038A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Needle base structure for use in safe self-destructing syringe |
| CN103285465A (en) * | 2012-02-29 | 2013-09-11 | 王祖扬 | Core rod structure for pullback-type safe self-destructive syringe |
| CN103285464A (en) * | 2012-02-29 | 2013-09-11 | 王祖扬 | Needle head pull-back type needle-replaceable safe self-destruction syringe |
| WO2020048335A1 (en) * | 2018-09-06 | 2020-03-12 | 广东海鸥医疗器械股份有限公司 | Syringe |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6921382B2 (en) * | 2002-08-21 | 2005-07-26 | Biotop Technology Co., Ltd. | Retracting device for a safety syringe |
| CN1689654A (en) * | 2004-04-26 | 2005-11-02 | 上海顶尖堂生化科技有限公司 | Break-down type safe injector |
| CN2750815Y (en) * | 2004-12-29 | 2006-01-11 | 吴建中 | Disposable safety self-destruction syringe |
| CN2933437Y (en) * | 2006-08-08 | 2007-08-15 | 林作钱 | Needle contractile type safety syringe |
| CN101411907A (en) * | 2007-10-16 | 2009-04-22 | 上海顶尖堂生化科技有限公司 | Safety self-destruction injector |
| US20090171285A1 (en) * | 2008-01-02 | 2009-07-02 | Sheei-Jin Wang | Safety syringe, syringe plunger processing system and method |
| CN201744031U (en) * | 2010-08-06 | 2011-02-16 | 上海康德莱企业发展集团有限公司 | Disposable retractable syringe |
| CN202105275U (en) * | 2011-06-07 | 2012-01-11 | 倍安德普医疗科技（上海）有限公司 | Safe self-destruction syringe |
| CN202105269U (en) * | 2011-06-07 | 2012-01-11 | 倍安德普医疗科技（上海）有限公司 | Inner needle base structure for safe self-destruction syringe |
| CN202161645U (en) * | 2011-07-18 | 2012-03-14 | 倍安德普医疗科技（上海）有限公司 | Needle-changeable internal needle base structure for safety self-destruction type syringe |
| CN202236663U (en) * | 2011-07-18 | 2012-05-30 | 倍安德普医疗科技（上海）有限公司 | Safety self-destruction type syringe capable of changing needle |
-
2011
- 2011-06-07 CN CN2011201887508U patent/CN202105275U/en not_active Expired - Fee Related
-
2012
- 2012-06-04 WO PCT/CN2012/000759 patent/WO2012167604A1/en active Application Filing
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102813985A (en) * | 2011-06-07 | 2012-12-12 | 王祖扬 | Safety self-destruction syringe |
| WO2012167604A1 (en) * | 2011-06-07 | 2012-12-13 | 倍安德普医疗科技（上海）有限公司 | Safe self-destructive syringe |
| WO2012167605A1 (en) * | 2011-06-07 | 2012-12-13 | 倍安德普医疗科技（上海）有限公司 | Internal needle seat structure for safe self-destructive syringe |
| CN102813985B (en) * | 2011-06-07 | 2016-09-21 | 王祖扬 | Safety self-destruction syringe |
| WO2013010376A1 (en) * | 2011-07-18 | 2013-01-24 | 倍安德普医疗科技（上海）有限公司 | Inner needle seat of exchangeable needle for safety self-destructing syringe |
| WO2013010373A1 (en) * | 2011-07-18 | 2013-01-24 | 倍安德普医疗科技（上海）有限公司 | Safety self-disposable syringe with replaceable needle |
| WO2013127038A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Needle base structure for use in safe self-destructing syringe |
| CN103285465A (en) * | 2012-02-29 | 2013-09-11 | 王祖扬 | Core rod structure for pullback-type safe self-destructive syringe |
| CN103285464A (en) * | 2012-02-29 | 2013-09-11 | 王祖扬 | Needle head pull-back type needle-replaceable safe self-destruction syringe |
| CN103285464B (en) * | 2012-02-29 | 2016-05-11 | 王祖扬 | Needle head pull-back type needle-replaceable safe self-destruction syringe |
| WO2013127040A1 (en) * | 2012-02-29 | 2013-09-06 | Wang Zuyang | Plunger for use in retractable-type safe self-destructing syringe |
| WO2020048335A1 (en) * | 2018-09-06 | 2020-03-12 | 广东海鸥医疗器械股份有限公司 | Syringe |
| US11872377B2 (en) | 2018-09-06 | 2024-01-16 | Guangdong Haiou Medical Apparatus Co., Ltd. | Syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012167604A1 (en) | 2012-12-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202105275U (en) | Safe self-destruction syringe | |
| CN202105269U (en) | Inner needle base structure for safe self-destruction syringe | |
| CN202569090U (en) | Needle-pulling-back safe self-destructive syringe | |
| CN202236663U (en) | Safety self-destruction type syringe capable of changing needle | |
| CN202376562U (en) | Cylinder structure used for safe self-destruction type syringe | |
| CN102813985A (en) | Safety self-destruction syringe | |
| CN202161645U (en) | Needle-changeable internal needle base structure for safety self-destruction type syringe | |
| CN202569091U (en) | Sleeve-type pullback locking assembly for pullback safety self-destruction syringe | |
| CN103285464B (en) | Needle head pull-back type needle-replaceable safe self-destruction syringe | |
| CN102813981A (en) | Barrel structure for safety auto-destruct syringe | |
| CN203634589U (en) | Pullback type fixing needle safety auto-disable syringe | |
| CN203620014U (en) | Pullback needle replaceable safe self-destruction injector | |
| CN201194975Y (en) | Safety self-breaking syringe | |
| CN102813982A (en) | Inner needle seat structure for safety self-destruction syringe | |
| CN102886089A (en) | Safe self-destroying syringe with changeable needle | |
| CN100579600C (en) | Safe self-destroyed syringe with greater force for preventing needle from withdrawing | |
| CN201987989U (en) | Mandrel locking structure | |
| CN102813982B (en) | Inner needle seat structure for safety self-destruction syringe | |
| CN202777324U (en) | Safe self-destructing type syringe capable of changing needle | |
| CN201643229U (en) | Safety syringe needle stand structure | |
| CN202777314U (en) | Core rod structure used for pullback type safe self-destructing type syringe | |
| CN202569093U (en) | Inner needle seat structure for replaceable needle for safety self-destruction syringe | |
| CN218759792U (en) | Oil gas well instrument delivery tool | |
| CN103285466B (en) | Needle head pull-back type safe self-destruction syringe | |
| CN102989061A (en) | Disposable syringe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WANG ZUYANG Free format text: FORMER OWNER: BIOTOP MEDICAL TECHNOLOGY (SHANGHAI) CO., LTD. Effective date: 20120823 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 200030 CHANGNING, SHANGHAI TO: 200336 CHANGNING, SHANGHAI |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20120823 Address after: 200336 Changning District gold city road, lane, room 25, No. 301, room 99 Patentee after: Wang Zuyang Address before: 200030, room 1993, building B, 100 Zunyi Road, Shanghai, Changning District Patentee before: Times safe Depp medical technology (Shanghai) Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20150607 |
|
| EXPY | Termination of patent right or utility model |