CN102553036B - Two-stage separate type safe self-destruction syringe - Google Patents
Two-stage separate type safe self-destruction syringe Download PDFInfo
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- CN102553036B CN102553036B CN 201210017028 CN201210017028A CN102553036B CN 102553036 B CN102553036 B CN 102553036B CN 201210017028 CN201210017028 CN 201210017028 CN 201210017028 A CN201210017028 A CN 201210017028A CN 102553036 B CN102553036 B CN 102553036B
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- 241001149930 Protura <class> Species 0.000 claims description 63
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- 230000013011 mating Effects 0.000 claims description 5
- 238000000926 separation method Methods 0.000 abstract description 8
- 238000010923 batch production Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 4
- 230000004048 modification Effects 0.000 abstract 1
- 238000012986 modification Methods 0.000 abstract 1
- 238000002347 injection Methods 0.000 description 19
- 239000007924 injection Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 5
- 210000002435 tendon Anatomy 0.000 description 5
- 230000003321 amplification Effects 0.000 description 3
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- 238000005516 engineering process Methods 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 210000004712 air sac Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
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- 238000010586 diagram Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000010255 intramuscular injection Methods 0.000 description 1
- 239000007927 intramuscular injection Substances 0.000 description 1
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- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The invention discloses a two-stage separate type safe self-destruction syringe, which can reduce the manufacturing difficulty of retractable safe self-destruction syringes through structure modification. A syringe needle connecting base of the syringe comprises a locking cone head and a connecting base that can be separated along the axial direction, the front part of the locking cone head is connected with the syringe needle, the rear part of the locking cone head is limited by the connecting base, the front segment of a core rod is matched with the inner cavity of the syringe needle connecting base and a gap is formed between the front segment of the core rod and the inner cavity of the syringe needle connecting base, a first destruction structure and a second self-destruction structure are arranged at the front segment at an interval in the axial direction and are respectively corresponding to a first non-return structure arranged on the inner wall of the locking cone head and a second non-return structure arranged on the inner wall of the connecting base to form an axial one-way position limiting structure, and when the second destruction structure contacts with the second non-return structure, the first destruction structure is spaced with the first non-return structure. The separation force of the two-stage separate type safe self-destruction syringe can be effectively controlled. The two-stage separate type safe self-destruction syringe facilitates operation of medical care personnel, has good reliability, and is convenient in assembly and suitable for batch production.
Description
Technical field
The present invention relates to a kind of syringe, especially a kind of self-destruction syringe.
Background technology
Along with the continuous popularization of safety injection, the self-destruction syringe with self-destroying function has been widely used in clinical.Simple self-destruction syringe is automatically damaging shape after product uses, and its effect is to avoid disposable product to be reused.Occlusal pattern self-destroyed syringe for example, in front end or the rear end of this syringe, be provided with can interlock device.Injection is when finishing, and engaging device makes push rod and the piston can not pumpback, thereby forces self-locking, reaches the purpose of self-destruction.
Another safe self-breaking syringe is to increase protection to medical personnel on the simple self-destruction syringe function basis of unmaking, and reaches effectively to protect medical personnel and other people to avoid the purpose of unexpected injury in the self-destruction process.Needle retraction type self-destroyed syringe for example.Disclosed in December in 2011 21 days, publication number is the Chinese patent application " a kind of safety self-destructing syringe with latch-up structure " of CN102284112A, its overcoat inner chamber is provided with needle holder near upper shed place, upper needle holder one end is provided with needle tubing, the upper needle holder other end is connected with lower syringe needle Connection Block, upper needle holder is cylindric, upper needle holder outer wall is provided with needle holder ring-type convex tendon, upper needle holder ring-type convex tendon and upper needle holder are into a single integrated structure, cavity wall is provided with the spacing draw-in groove of ring-type that matches with upper needle holder ring-type convex tendon in the overcoat, cavity wall is provided with the spacing ring-type convex tendon of Connection Block near lower opening in the lower syringe needle Connection Block, the core bar end is provided with the circular cone part of pulling back, and circular cone is pulled back the overall diameter of part greater than the interior diameter of the spacing ring-type convex tendon of Connection Block.The product reasonable integral structure can realize that in assembly technology each parts can carry out the rear portion automatic assembling successively.Be provided with the spring of compression in its syringe needle or push rod inside, after injection is finished, trigger spring and discharge, make in the syringe needle indentation overcoat, protect syringe needle, and can not be used again.
The needle retraction type safe self-breaking syringe becomes main flow gradually owing to more being adapted to batch production.The accessory of self-destruction syringe substantially all adopts moulding, one side is owing to the reason of injection moulding precision, on the other hand, the injection mold of batch production all adopts multi-cavity mold, the scale error of injection moulding accessory generally can only be controlled at 0.05mm, error is about 0.10mm after the stack, so the separating force magnitude range during the existing product self-destruction is difficult to control, separating force is an important indicator of self-destruction syringe performance, the too little meeting of separating force causes syringe to separate when actual aspiration medicinal liquid or intramuscular injection, causes the syringe needle rollback and can not finish injection, aspiration medicinal liquid or cause leakage; Separating force too conference causes operator very hard or be difficult to pumpback when the pumpback injector push-rod, can not reach self-destruction.
In addition, because syringe need to have the size of certain transparency and termination less, limited the thickness of counterpart wall, thereby affected cooperation intensity, too thick such as wall in addition, the rigidity of accessory is larger, thereby forms larger frictional force and separate because of difficulty when separating.
Summary of the invention
In order to overcome the existing higher deficiency of needle retraction type safe self-breaking syringe manufacture difficulty, technical problem to be solved by this invention provides a kind of by architecture advances reduction needle retraction type safe self-breaking syringe manufacture difficulty, to improve the two-stage separate type safe self-destruction syringe of product reliability.
The technical solution adopted for the present invention to solve the technical problems is: two-stage separate type safe self-destruction syringe, comprise overcoat, core bar and the syringe needle Connection Block that is positioned at overcoat inner chamber front end, be provided with axial positioning structure and front hermetically-sealed construction between syringe needle Connection Block and the overcoat, core bar and overcoat sliding connection, be provided with axial limit structure and rear hermetically-sealed construction between core bar and the overcoat, described syringe needle Connection Block is comprised of locking conehead and the Connection Block that can separate vertically, the front portion of locking conehead is connected with syringe needle, the rear portion of locking conehead is spacing by Connection Block, the leading portion of described core bar cooperate with the inner chamber of syringe needle Connection Block and the two between gapped, axially spaced-apart is provided with first structure and second structure of unmaking of unmaking on the leading portion, first unmake structure and second unmake structure respectively with the inwall that is arranged at the locking conehead on the first non-return structure and be arranged at the axial unidirectional position limiting structure of the corresponding formation of the second non-return structure on the inwall of Connection Block, and unmake structure when contacting with the second non-return structure second, first unmakes has the interval between structure and the first non-return structure.
The rear sleeve of described locking conehead is connected on the cylindrical of Connection Block, be provided with between locking conehead and the Connection Block with Connection Block before locking conehead direction and then radial dilatation and separate and the expansion structure that resets with Connection Block and locking conehead, front hermetically-sealed construction is arranged between locking conehead and the overcoat position corresponding to described expansion structure.
The rear portion of described locking conehead is the spacing hole that is provided with inner conical surface, and Connection Block cooperates with described spacing hole and is provided with the male cone (strobilus masculinus) that cooperates with described inner conical surface, and described expansion structure is comprised of male cone (strobilus masculinus) and inner conical surface.
Described front hermetically-sealed construction forms by being arranged on male-tapered sealing surface on the locking conehead periphery and the inner conical sealing surface on the corresponding inwall that is arranged on overcoat.
The axial positioning structure that arranges between described syringe needle Connection Block and the overcoat comprise be arranged at the overcoat front end, with the spacing inward flange that contacts of front end face of locking conehead be arranged at inner groovy on the inwall of overcoat, be provided with the outer convex rib corresponding with inner groovy on the rear end periphery of Connection Block.
Described first structure of unmaking is positioned at the front end of core bar.
Described first structure and second structure of unmaking of unmaking is tapered annular projection, and described the first non-return structure and the second non-return structure are the positioning spigot that is arranged on the respective inner walls.
The rear hermetically-sealed construction that arranges between described core bar and the overcoat is the plug that is socketed in the leading portion of core bar, and the front end of plug is the conical surface, is provided with the mating surface with described cone match on the inwall of described Connection Block.
The invention has the beneficial effects as follows: adopt the second-order separation, the larger frictional force that can produce when separating resolves into successively two parts than less friction, can effectively control product separation power, thereby when separating self-destruction, only need to pull back with regard to realizing separating the purpose of self-destruction with less power, make things convenient for medical personnel to operate; Utilize two effects that the inclined-planes cooperation produces lateral expansion power of correspondence position on locking conehead and the Connection Block, increase the frictional force when separating, make product in the use procedure that does not have to separate before unmaking, be unlikely the syringe needle rollback and cause to finish injection, aspiration medicinal liquid or cause leakage; Structure is easy to assembly, is very suitable for batch production.
Description of drawings
Fig. 1 is the decomposing schematic representation of two-stage separate type safe self-destruction syringe of the present invention.
Fig. 2 is the front view (the local amplification) of locking conehead among Fig. 1.
Fig. 3 is the front view (the local amplification) of Connection Block among Fig. 1.
Fig. 4 is the front view (the local amplification) of overcoat among Fig. 1.
Fig. 5 is the schematic diagram of another embodiment of the present invention.
Be labeled as among the figure, 1-locks conehead, 2-Connection Block, 3-overcoat, 4-core bar, 5-plug, 6-injection cavity volume, 11-the first non-return structure, 12-are bored cylinder, 13-male-tapered sealing surface, 14-inner conical surface, 15-spacing hole, 21-the second non-return structure, the 22-male cone (strobilus masculinus), 23-outer convex rib, 24-mating surface, 30-inward flange, 31-inner conical sealing surface, 32-inner groovy, 33-overcoat inner chamber, inward flange behind the 34-, 40-leading portion, 41-first structure of unmaking, 42-second structure of unmaking, the 51-conical surface.
Do not draw syringe needle among Fig. 1, do not draw syringe needle and core bar among Fig. 5.
The specific embodiment
The present invention is further described below in conjunction with drawings and Examples.
Such as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, two-stage separate type safe self-destruction syringe of the present invention comprises overcoat 3, core bar 4 and the syringe needle Connection Block that is positioned at overcoat inner chamber 33 front ends, be provided with axial positioning structure and front hermetically-sealed construction between syringe needle Connection Block and the overcoat 3, core bar 4 and overcoat 3 sliding connections, be provided with axial limit structure and rear hermetically-sealed construction between core bar 4 and the overcoat 3, described syringe needle Connection Block is comprised of the locking conehead 1 that can separate vertically and Connection Block 2, the front portion of locking conehead 1 is connected with syringe needle, the rear portion of locking conehead 1 is spacing by Connection Block 2, the leading portion 40 of described core bar 4 cooperate with the inner chamber of syringe needle Connection Block and the two between gapped, axially spaced-apart is provided with first structure 41 and second structure 42 of unmaking of unmaking on the leading portion 40, first unmake structure 41 and second unmake structure 42 respectively with the inwall that is arranged at locking conehead 1 on the first non-return structure 11 and be arranged at the axial unidirectional position limiting structure of the second non-return structure 21 corresponding formation on the inwall of Connection Block 2, and unmake structure 42 when contacting with the second non-return structure 21 second, first unmakes has the interval between structure 41 and the first non-return structure 11.
Obviously, be realization safety self-destruct purpose among the present invention, described axial unidirectional position limiting structure should be to allow core bar 4 to slide to the syringe needle direction to stop simultaneously the reverse slide of core bar 4, in order to utilize two structures of unmaking that are arranged on the core bar 4 when separating self-destruction, to realize the second-order separation: to inject complete rear pumpback core bar 4, on the core bar 4 second structure 42 of unmaking acts on the second non-return structure 21 on the Connection Block 2, so that Connection Block 2 separates with overcoat 3 and locking conehead 1 first and along with core bar 4 is return in the overcoat inner chamber 33, finish the first order and separate, unmake and also do not contact with each other between structure 41 and the first non-return structure 11 this moment first; Continuation pumpback along with core bar 4, first of core bar 4 structure 41 of unmaking acts on first non-return structure 11 of locking on the conehead 1, locking conehead 1 is separated with overcoat 3 and along with core bar 4 is return in the overcoat inner chamber 33, finishes second level separation, the core bar 4 that fractures is at last finished self-destruction.Owing to adopting the second-order separation, the larger frictional force that can produce when separating resolves into successively two parts than less friction, can effectively control product separation power, thereby when separating self-destruction, only need pull back with less power and just can realize separating the purpose of self-destruction, make things convenient for medical personnel to operate, also because adopt this kind isolating construction, each wall of syringe can guaranteed to do suitably thickly under the satisfactory prerequisite of transparency, separating force can suitably strengthen on existing safety self-destructing syringe architecture basics, thereby reduce needle retraction type safe self-breaking syringe manufacture difficulty, has enough frictional force between each parts when having guaranteed simultaneously injection, ensured carrying out smoothly of injection process, improved the reliability of product, in addition, the front portion of locking conehead can arrange the standardization cone cylinder 12 with wildcard syringe needle coupling, and the safe self-breaking syringe that need not resemble also needs to arrange the special-purpose needle head that adapts to its overall structure.
Such as Fig. 1, Fig. 2, Fig. 3, Fig. 4 and shown in Figure 5, the same with existing self-destruction syringe, for avoiding syringe needle rollback in the aspiration medicinal liquid process, be provided with axial positioning structure between the syringe needle Connection Block that is connected with syringe needle among the present invention and the overcoat 3, described axial positioning structure comprise be arranged at overcoat 3 front ends, with the spacing inward flange that contacts 30 of front end face of locking conehead 1 be arranged at inner groovy 32 on the inwall of overcoat 3, be provided with the outer convex rib 23 corresponding with inner groovy 32 on the rear end periphery of Connection Block 2.
Such as Fig. 1, Fig. 2, Fig. 4 and shown in Figure 5, for avoiding leakage, be provided with front hermetically-sealed construction between syringe needle Connection Block and the overcoat 3, but, after the syringe needle Connection Block adopts split-type structural of the present invention, obviously, for avoiding leakage, the front hermetically-sealed construction between syringe needle Connection Block and the overcoat 3 should be arranged at front end near between the locking conehead 1 and overcoat 3 of syringe needle.
Further be, for reducing manufacture difficulty, as shown in Figure 1, Figure 2, Figure 3 and Figure 4, the rear sleeve of described locking conehead 1 is connected on the cylindrical of Connection Block 2, be provided with between locking conehead 1 and the Connection Block 2 with Connection Block 2 before locking conehead 1 direction and then radial dilatation and separate and the expansion structure that resets with Connection Block 2 and locking conehead 1, described front hermetically-sealed construction is arranged between locking conehead 1 and the overcoat 3 position corresponding to described expansion structure.Expansion structure can make in the injection process locking conehead 1 tightly recline to the inwall of overcoat 3, frictional force between the two strengthens, both can ensure the sealing effectiveness of hermetically-sealed construction before guaranteeing between locking conehead 1 and the overcoat 3, avoid leakage, can guarantee again in the use procedure before separating self-destruction that syringe needle can rollback and cause finishing injection, simultaneously, in the self-destruction process, along with finishing that the first order is separated, expansion structure resets, when separate the second level, can easily separate between locking conehead 1 and the overcoat 3.In addition, described expansion structure also can adopt the Air sac cover structure that is arranged on the similar plug 5 between Connection Block cylindrical and the locking conehead inwall etc.
Such as Fig. 1, Fig. 2 and shown in Figure 3, be simplified structure, the convenient manufacturing, the rear portion of described locking conehead 1 is the spacing hole 15 that is provided with inner conical surface 14, Connection Block 2 cooperates with described spacing hole 15 and is provided with the male cone (strobilus masculinus) 22 that cooperates with described inner conical surface 14, and described expansion structure is comprised of male cone (strobilus masculinus) 22 and inner conical surface 14.Produce the effect of lateral expansion power with cone match, increase the frictional force when separating, make product in not have the use procedure of separation before unmaking, be unlikely the syringe needle rollback and cause to finish injection, aspiration medicinal liquid or cause leakage.
Be simplified structure, be convenient to batch production, described front hermetically-sealed construction forms by being arranged on male-tapered sealing surface 13 on locking conehead 1 periphery and the inner conical sealing surface 31 on the corresponding inwall that is arranged on overcoat 3.Obviously, behind location between Connection Block 2 and the overcoat 3, male-tapered sealing surface 13 and inner conical sealing surface 31 namely tightly recline, and realize sealing.Simultaneously, this structure also is convenient to finish easily from overcoat 3 rear ends the assembling of locking conehead 1 and Connection Block 2.
As shown in Figure 1, for shortening the length of whole syringe, described first structure 41 of unmaking should be positioned at the front end of core bar 4.
Such as Fig. 1, Fig. 2 and shown in Figure 3, be simplified structure, be convenient to batch production, described first the unmake structure 42 of structure 41 and second of unmaking is the tapered annular projection, described the first non-return structure 11 and the second non-return structure 21 are for being arranged at the positioning spigot on the respective inner walls.What certainly, locking also can be adopted other on conehead 1, Connection Block 2 and the core bar 4 can realize the axially unidirectional spacing position limiting structure that mates.
Such as Fig. 1, Fig. 3 and shown in Figure 4, the rear hermetically-sealed construction that arranges between described core bar 4 and the overcoat 3 is the plug 5 that is socketed in the leading portion 40 of core bar 4, guarantee that injection can not leak from the rear end, the front end of plug 5 is the conical surface 51, be provided with the mating surface 24 that cooperates with the described conical surface 51 on the inwall of described Connection Block 2, the convenient syringe needle Connection Block that compresses in injection process guarantees carrying out smoothly of injection.
Conventional, causing leakage for avoiding core bar 4 to be drawn out of overcoat 3, the axial limit structure that arranges between described core bar 4 and the overcoat 3 is the rear inward flange 34 that is arranged on the overcoat 3.
Embodiment one:
Such as Fig. 1, Fig. 2, Fig. 3 and shown in Figure 4, two-stage separate type safe self-destruction syringe of the present invention comprises overcoat 3, core bar 4 and the syringe needle Connection Block that is formed by the locking conehead 1 that can separate vertically and Connection Block 2, the syringe needle Connection Block is positioned at overcoat inner chamber 33 front ends, the front end face of locking conehead 1 is spacing by the inward flange 30 on the overcoat 3, the rear portion of locking conehead 1 is spacing by Connection Block 2, be respectively arranged with the outer convex rib 23 that is complementary and inner groovy 32 on Connection Block 2 and the overcoat 3 as axial positioning structure, the rear portion of locking conehead 1 is the spacing hole 15 that is provided with inner conical surface 14, Connection Block 2 cooperates with described spacing hole 15 and is provided with the male cone (strobilus masculinus) 22 that cooperates with described inner conical surface 14, hermetically-sealed construction before forming corresponding to the inner conical sealing surface 31 on the male-tapered sealing surface 13 on locking conehead 1 periphery of inner conical surface 14 positions and the corresponding inwall that is arranged on overcoat 3, on the leading portion 40 of core bar 4 cover have plug 5 and with overcoat 3 sliding connections, hermetically-sealed construction after plug 5 forms with overcoat 3, the front end of plug 5 is the conical surface 51, be provided with the mating surface 24 that cooperates with the described conical surface 51 on the inwall of Connection Block 2, the leading portion 40 of core bar 4 cooperate with the inner chamber of syringe needle Connection Block and the two between gapped, before, can store injection between the rear hermetically-sealed construction and limit injection and can only be flowed out by the cone cylinder 12 of locking conehead 1 front portion, cone cylinder 12 is connected with syringe needle, axially spaced-apart is provided with first structure 41 and second structure 42 of unmaking of unmaking on the leading portion 40, respectively with the inwall that is arranged at locking conehead 1 on the first non-return structure 11 and be arranged at the axial unidirectional position limiting structure of the second non-return structure 21 corresponding formation on the inwall of Connection Block 2.
Embodiment two:
With reference to Fig. 1, embodiment two adopts the core bar 4 with embodiment one same structure, as shown in Figure 5, two-stage separate type safe self-destruction syringe of the present invention comprises overcoat 3, core bar 4 and the syringe needle Connection Block that is formed by the locking conehead 1 that can separate vertically and Connection Block 2, the syringe needle Connection Block is positioned at overcoat inner chamber 33 front ends, the front end face of locking conehead 1 is spacing by the inward flange 30 on the overcoat 3, the rear portion of locking conehead 1 is spacing by Connection Block 2, be respectively arranged with the outer convex rib 23 that is complementary and inner groovy 32 on Connection Block 2 and the overcoat 3 as axial positioning structure, hermetically-sealed construction before inner conical sealing surface 31 on the inwall that male-tapered sealing surface 13 on locking conehead 1 periphery and correspondence are arranged on overcoat 3 forms, on the leading portion 40 of core bar 4 cover have plug 5 and with overcoat 3 sliding connections, hermetically-sealed construction after plug 5 forms with overcoat 3, the front end of plug 5 is the conical surface 51, be provided with the mating surface 24 that cooperates with the described conical surface 51 on the inwall of Connection Block 2, the leading portion 40 of core bar 4 cooperate with the inner chamber of syringe needle Connection Block and the two between gapped, before, can store injection between the rear hermetically-sealed construction and limit injection and can only be flowed out by the cone cylinder 12 of locking conehead 1 front portion, cone cylinder 12 is connected with syringe needle, axially spaced-apart is provided with first structure 41 and second structure 42 of unmaking of unmaking on the leading portion 40, respectively with the inwall that is arranged at locking conehead 1 on the first non-return structure 11 and be arranged at the axial unidirectional position limiting structure of the second non-return structure 21 corresponding formation on the inwall of Connection Block 2.
Claims (5)
1. two-stage separate type safe self-destruction syringe, comprise overcoat (3), core bar (4) and be positioned at the syringe needle Connection Block of overcoat inner chamber (33) front end, be provided with axial positioning structure and front hermetically-sealed construction between syringe needle Connection Block and the overcoat (3), core bar (4) and overcoat (3) sliding connection, be provided with axial limit structure and rear hermetically-sealed construction between core bar (4) and the overcoat (3), it is characterized in that: described syringe needle Connection Block is comprised of the locking conehead (1) that can separate vertically and Connection Block (2), the front portion of locking conehead (1) is connected with syringe needle, the rear portion of locking conehead (1) is spacing by Connection Block (2), the leading portion (40) of described core bar (4) cooperate with the inner chamber of syringe needle Connection Block and the two between gapped, the upper axially spaced-apart of leading portion (40) is provided with first structure (41) and second structure (42) of unmaking of unmaking, first unmake structure (41) and second unmake structure (42) respectively with the inwall that is arranged at locking conehead (1) on the first non-return structure (11) and be arranged at the axial unidirectional position limiting structure of the corresponding formation of the second non-return structure (21) on the inwall of Connection Block (2), and unmake structure (42) and the second non-return structure (21) when contacting second, first unmakes has the interval between structure (41) and the first non-return structure (11), described first structure (41) and second structure (42) of unmaking of unmaking is tapered annular projection, described the first non-return structure (11) and the second non-return structure (21) are for being arranged at the positioning spigot on the respective inner walls, the rear sleeve of described locking conehead (1) is connected on the cylindrical of Connection Block (2), be provided with between locking conehead (1) and the Connection Block (2) with Connection Block (2) before locking conehead (1) direction so that radial dilatation and with Connection Block (2) with lock that conehead (1) separates and the expansion structure that resets, front hermetically-sealed construction is arranged between locking conehead (1) and the overcoat (3) position corresponding to described expansion structure, the rear portion of described locking conehead (1) is for being provided with the spacing hole (15) of inner conical surface (14), Connection Block (2) cooperates with described spacing hole (15) and is provided with the male cone (strobilus masculinus) (22) that cooperates with described inner conical surface (14), and described expansion structure is comprised of male cone (strobilus masculinus) (22) and inner conical surface (14).
2. two-stage separate type safe self-destruction syringe as claimed in claim 1 is characterized in that: described front hermetically-sealed construction is comprised of the inner conical sealing surface (31) that is arranged on the inwall that male-tapered sealing surface (13) on locking conehead (1) periphery and correspondence be arranged on overcoat (3).
3. two-stage separate type safe self-destruction syringe as claimed in claim 1, it is characterized in that: the axial positioning structure that arranges between described syringe needle Connection Block and the overcoat (3) comprise be arranged at overcoat (3) front end, with the spacing inward flange that contacts of front end face (30) that locks conehead (1) be arranged at inner groovy (32) on the inwall of overcoat (3), be provided with the outer convex rib (23) corresponding with inner groovy (32) on the rear end periphery of Connection Block (2).
4. two-stage separate type safe self-destruction syringe as claimed in claim 1 is characterized in that: described first structure (41) of unmaking is positioned at the front end of core bar (4).
5. two-stage separate type safe self-destruction syringe as claimed in claim 1, it is characterized in that: the rear hermetically-sealed construction that arranges between described core bar (4) and the overcoat (3) is the plug (5) that is socketed in the leading portion (40) of core bar (4), the front end of plug (5) is the conical surface (51), is provided with the mating surface (24) that cooperates with the described conical surface (51) on the inwall of described Connection Block (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210017028 CN102553036B (en) | 2012-01-19 | 2012-01-19 | Two-stage separate type safe self-destruction syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210017028 CN102553036B (en) | 2012-01-19 | 2012-01-19 | Two-stage separate type safe self-destruction syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102553036A CN102553036A (en) | 2012-07-11 |
| CN102553036B true CN102553036B (en) | 2013-10-16 |
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| CN 201210017028 Active CN102553036B (en) | 2012-01-19 | 2012-01-19 | Two-stage separate type safe self-destruction syringe |
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| CN (1) | CN102553036B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105107062B (en) * | 2015-08-27 | 2018-09-18 | 陆盘中 | Self-destruction syringe |
| WO2024061026A1 (en) * | 2022-09-21 | 2024-03-28 | 普昂(杭州)生命科技有限公司 | Safety syringe |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101850141B (en) * | 2009-04-01 | 2013-06-12 | 江苏亿乐医疗用品有限公司 | Safe injector |
| CN101927048B (en) * | 2009-06-24 | 2012-03-21 | 张淑茗 | Retraction structure for safety syringe |
| CN102284113A (en) * | 2010-06-17 | 2011-12-21 | 昆山和兴医疗科技有限公司 | Safe self-destructive injector with replaceable needle head and locking structure |
| CN202459662U (en) * | 2012-01-19 | 2012-10-03 | 陆盘中 | Secondary separation type safe self-destruction syringe |
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Application publication date: 20120711 Assignee: Sichuan Shuanglu Medical Equipment Co. Ltd Assignor: Lu Panzhong Contract record no.: 2015510000022 Denomination of invention: Two-stage separate type safe self-destruction syringe Granted publication date: 20131016 License type: Exclusive License Record date: 20150402 |
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Effective date of registration: 20160629 Address after: 620564 Sichuan Chengdu Tianfu New Area Renshou High Economic Development Zone Hing Yuen Road Patentee after: Sichuan Shuanglu Medical Equipment Co. Ltd Address before: And 610212 in Sichuan province Chengdu City Renhe road high tech Zone Chengdu Shuanglu medical instrument limited company Patentee before: Lu Panzhong |