CN1120730C - All-destroyed disposable syringe - Google Patents
All-destroyed disposable syringe Download PDFInfo
- Publication number
- CN1120730C CN1120730C CN98100616A CN98100616A CN1120730C CN 1120730 C CN1120730 C CN 1120730C CN 98100616 A CN98100616 A CN 98100616A CN 98100616 A CN98100616 A CN 98100616A CN 1120730 C CN1120730 C CN 1120730C
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- China
- Prior art keywords
- syringe needle
- taper hole
- nose cone
- internal taper
- syringe
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Abstract
The present invention relates to an all destroying type disposable syringe which is composed of an outer sleeve, a core rod and a piston, wherein the closed bottom of the outer sleeve is provided with a conical head; the center of the conical head is provided with a conical head pipe hole; a needle head having an inner conical hole is sheathed on the conical head of the outer sleeve; a defect part is arranged on the core rod. The present invention is characterized in that an easily folded part is arranged on the conical head of the outer sleeve; the easily folded part is positioned on the outer wall of the conical head and provided with an annular groove; the annular groove is positioned on the outer side of a combination part of the conical head and the needle head. After the present invention is used, the three main parts of the syringe can be all destroyed in order to effectively avoid that any parts of the syringe are repeatedly used, and the function of disposable use is really realized.
Description
The present invention relates to a kind of injector for medical purpose, is a kind of reusable all-destroyed disposable syringe of avoiding specifically.
At present, domestic disposable syringe, as utility model patent structure that ZL95203049 discloses, it is made up of overcoat 1, core bar 2 and the piston 3 of syringe.Opening part at overcoat 1 is provided with crimping 4, is provided with nose cone 5 at the back cover of overcoat, and the central authorities of this nose cone 5 are provided with the conehead pore; Core bar 2 is inserted in the overcoat 1, and it protrudes from the opening of overcoat 1, and the protruding end of core bar 2 is provided with presses hands 6; Be equipped with disposable syringe needle 9 and protective sleeve of syringe needle 10 on the nose cone 5 of overcoat.The feature of above-mentioned utility model patent is to be provided with damaged 7 on core bar 2, after syringe uses, core bar 2 is drawn out to discards after damaged 7 places fracture, because damaged 7 on this core bar 2 can cause the stress concentration at this place, so can easily this core bar 2 be fractureed, reaching with this can disposable purpose.But above-mentioned disposable syringe also exists following defective:
1, the overcoat of syringe is undamaged;
2, the supporting entry needle of syringe stands intact;
3, because the overcoat and the syringe needle of syringe is all not destroyed, so after use,,, be used in the healthy person once more by after the assembling artificially with the overcoat and the entry needle of the syringe of polluter.For above-mentioned reasons, this kind syringe is easy to lose disposable effect.
The object of the present invention is to provide a kind of all-destroyed disposable syringe, make it after use, be easy to all be destroyed, thereby avoid the probability that is used again.
The object of the present invention is achieved like this: a kind of all-destroyed disposable syringe, form by overcoat, core bar and piston, back cover at overcoat is provided with nose cone, these cone headed central authorities are provided with the conehead pore, be arranged with a syringe needle that has an internal taper hole on the nose cone of overcoat, core bar is provided with damaged portion; The nose cone that it is characterized in that described overcoat is provided with an easy folding part, and this easy folding part is provided with an annular recess for being positioned at the nose cone outer wall, and this annular recess is positioned at the outside, joint portion of nose cone and syringe needle.
Purpose of the present invention also can be realized that by following measure the internal diameter that described cone headed central authorities are provided with the conehead pore enlarges at the annular recess place that corresponds on the outer wall, and this place's wall thickness is less than the front end wall thickness of conehead pore; The end of the internal taper hole inwall of syringe needle is provided with one to internal projecting ring, and this bulge loop snaps in the annular recess on the nose cone of above-mentioned overcoat, and this can be stagewise to internal projecting ring; The upper end that is positioned at annular recess on the cone headed outer wall can be provided with an outside bulge loop, and the inwall that is positioned at the syringe needle internal taper hole is provided with corresponding groove, in the groove on the outside bulge loop on the nose cone is stuck in the syringe needle internal taper hole; The top of cone headed front end is provided with an outside bulge loop, and the corresponding position of the internal taper hole of syringe needle is provided with a groove, and this vertical bulge loop snaps in the groove of syringe needle internal taper hole; The end of described syringe needle internal taper hole is distributed with annular aperture, and the position of this annular aperture is corresponding with cone headed thin-walled or annular recess.Triangle is sent out for best in the cross section of above-mentioned annular recess.
Operation principle of the present invention is to utilize the annular recess portion on the nose cone of overcoat of syringe to form a stress raiser, again because the wall thickness at this place is thinner, so after syringe uses, core bar is drawn out to damaged place, and the application of force bends syringe needle and core bar simultaneously, make core bar can prolong this damaged place, overcoat prolongs its cone headed annular recess place and is all fractureed, and this moment, the cone headed place of fractureing was stuck in the internal taper hole of syringe needle, and overcoat and core bar and syringe needle can be scrapped simultaneously and can not re-use like this.Also the conical surface that contacts of the internal taper hole of the nose cone of overcoat and syringe needle can be provided with mutual snap-in structure, make the cone headed section of fractureing be placed in the syringe needle internal taper hole, and can not be pulled out.
In sum, the present invention is after use, operator's outline one application of force is made a simple bending action, breaking-up can mainly partly all fracture three of syringe, be easy to all be destroyed after making syringe use, can avoid arbitrary portion of syringe to be repeated to use effectively, really realize disposable function.
The explanation of accompanying drawing drawing:
Fig. 1 is the structural representation of existing disposable syringe;
Fig. 2 is the structural representation of first kind of embodiment of the present invention;
Fig. 3 is the structural representation of second kind of embodiment of the present invention;
Fig. 4 is the structural representation of the third embodiment of the present invention.
Fig. 5 is the structural representation of the 4th kind of embodiment of the present invention.
Fig. 6 is the structural representation of the 5th kind of embodiment of the present invention.
Fig. 7 is the structural representation of the 6th kind of embodiment of the present invention.
It is as follows to describe the present invention in detail below in conjunction with embodiment and accompanying drawing thereof:
See also shown in Figure 2ly, the present invention is made up of overcoat 1, core bar 2 and the piston 3 of syringe.Opening part at overcoat 1 is provided with crimping 4, is provided with nose cone 5 at the back cover of overcoat, and the central authorities of this nose cone 5 are provided with the conehead pore; Core bar 2 is inserted in the overcoat 1, and core bar 2 is provided with one damaged 7, and core bar 2 protrudes from the opening of overcoat 1, and the protruding end of core bar 2 is provided with presses hands 6; Be equipped with disposable syringe needle 9 on the nose cone 5 of overcoat, this syringe needle 9 has an internal taper hole 11, is sheathed on the nose cone 5 by this internal taper hole 11 and forms tight fit, is arranged with protective sleeve of syringe needle 10 on the syringe needle.The nose cone of overcoat is provided with an easy folding part, and this easy folding part is that the outer wall that is positioned at nose cone 5 is provided with an annular recess 12 in the present embodiment, and this annular recess 12 is positioned at the outside, joint portion of nose cone 5 and syringe needle 9.The internal diameter that the central authorities of nose cone 5 are provided with conehead pore 13 enlarges at annular recess 12 places that correspond on the outer wall, makes the front end wall thickness of this place's wall thickness less than nose cone 5.
The shown syringe of present embodiment, because the nose cone at overcoat 1 is to be provided with an annular recess 12, the cross section that this annular recess is 12 ones is preferably triangle, to form a stress raiser, simultaneously again because the wall thickness at this place is thinner, so after syringe uses, core bar 2 is drawn out to damaged 7 places, and the application of force bends syringe needle 9 and core bar 2 simultaneously, make core bar 2 prolong this damaged place, annular recess 12 places that overcoat 1 prolongs its nose cone 5 are all fractureed, and the place of fractureing of nose cone 5 is stuck in the internal taper hole 11 of syringe needle 9 at this moment, and overcoat 1 and core bar 2 and syringe needle 9 can be scrapped simultaneously and can not re-use like this.
Fig. 3 illustrates second kind of embodiment of the present invention, and in the present embodiment, the end of internal taper hole 11 inwalls of syringe needle 9 is provided with one to internal projecting ring 14.In when assembling, with this in internal projecting ring 14 snaps in annular recess 12 on the nose cone 5 of above-mentioned overcoat 1.When present embodiment above-mentioned nose cone 5 when fractureing prolonged ring-type scrobicular ring 12 and fractures, its place of fractureing snapped in the internal taper hole 11 of syringe needle 9, and by on this internal taper hole 11 to the restriction of internal projecting ring 14 and can not be pulled out again.The using method of present embodiment is identical with embodiment 1, but because the inner face to internal projecting ring 12 can produce a relative moment of rupture to the annular recess on the nose cone 5 12 on the internal taper hole 11 of syringe needle 9, therefore user only need omit an application of force, this nose cone 5 promptly can prolong annular recess 12 places and fracture, syringe is all destroyed, can avoid the repeated use of arbitrary part of syringe completely.
Fig. 4 illustrates the third embodiment of the present invention, and in the present embodiment, the end of internal taper hole 11 inwalls of syringe needle 9 is provided with one to internal projecting ring 15, and this is discontinuous stagewise design to internal projecting ring 15.Present embodiment has the advantage identical with embodiment 2, simultaneously on the annular recess 12 on this discontinuous nose cone 5 that is snapping in above-mentioned overcoat 1 to internal projecting ring 15 time, owing to be discontinuous segmentation structure to internal projecting ring 15, the application of force in the time of can reducing to assemble, the section of fractureing that can guarantee nose cone 5 again are placed in the internal taper hole 11 of syringe needle 9 and can not be pulled out again.
Fig. 5 illustrates the 4th kind of embodiment of the present invention.In the present embodiment, the upper end that is positioned at annular recess 12 on the outer wall of the nose cone 5 of overcoat 1 is provided with an outside bulge loop 16, and the inwall that is positioned at the internal taper hole 11 of syringe needle 9 is provided with corresponding groove 17.In when assembling, the internal taper hole 11 of syringe needle 9 is placed on the nose cone 5, omit the downward application of force again, the outside bulge loop 16 on this moment nose cone 5 can be stuck in the groove 17 on the internal taper hole 11 of syringe needle 9.Present embodiment is when fractureing, groove 17 on syringe needle 9 inwalls also can produce a moment of rupture with the contact surface of outside bulge loop 16, make nose cone 5 easier being fractureed, and this section of fractureing can be placed in the internal taper hole 11 of syringe needle, and can not be drawn out again, thereby syringe needle 9 is scrapped simultaneously and can not be reused again.
Fig. 6 illustrates the 5th kind of embodiment of the present invention.In the present embodiment, the top end of the front end of nose cone 5 is provided with an outside bulge loop 18, and the corresponding position of the internal taper hole 11 of syringe needle 9 is provided with a groove 19, during assembling this vertical bulge loop 18 is snapped in the groove 19 of syringe needle internal taper hole 11.The operation principle of present embodiment is identical with a last embodiment, does not repeat them here.
Fig. 7 illustrates the 6th kind of embodiment of the present invention.Present embodiment is the annular aperture 20 that is distributed with in the inboard of the end of syringe needle internal taper hole 11 crimping, and the position of this perforate 20 is corresponding with the thin-walled or the annular recess 12 of nose cone 5.The annular aperture 20 of syringe needle internal taper hole 11 ends makes syringe needle 9 form stress concentration point at these perforate 20 places.And this annular aperture 20 is corresponding to the thin-walled place or the annular recess 12 of nose cone 5, and therefore when fractureing, syringe needle 9 can prolong these annular aperture 20 places and fracture, and annular recess 12 places that overcoat 1 also can prolong nose cone 5 fracture simultaneously.And if be provided with an outside bulge loop 18 at the top end of the front end of nose cone 5, and the corresponding position of the internal taper hole 11 of syringe needle 9 is provided with a groove 19, this vertical bulge loop 18 snaps in the groove 19 of syringe needle internal taper hole 11.Therefore the groove on syringe needle 9 inwalls 19 also can produce a moment of rupture with the outside contact surface of bulge loop 18, makes syringe needle 9 and nose cone 5 easier being fractureed, and is placed in the syringe needle internal taper hole 11.The present embodiment destruction that syringe needle 9 and nose cone 5 can be fractureed simultaneously.
Claims (7)
1, a kind of all-destroyed disposable syringe, be made up of overcoat, core bar and piston, be provided with nose cone at the back cover of overcoat, these cone headed central authorities are provided with the conehead pore, be arranged with a syringe needle that has an internal taper hole on the nose cone of overcoat, core bar is provided with damaged portion; The nose cone that it is characterized in that described overcoat is provided with an easy folding part, and this easy folding part is provided with an annular recess for being positioned at the nose cone outer wall, and this annular recess is positioned at the outside, joint portion of nose cone and syringe needle; The internal diameter of described cone headed central conehead pore enlarges at the annular recess place that corresponds on the outer wall, and this place's wall thickness is less than the front end wall thickness of conehead pore.
2, a kind of all-destroyed disposable syringe according to claim 1 is characterized in that the end of the internal taper hole inwall of described syringe needle is provided with one to internal projecting ring, and this bulge loop snaps in the annular recess on the nose cone of above-mentioned overcoat.
3, all-destroyed disposable syringe according to claim 2, what it is characterized in that the inner wall at end of the internal taper hole of described syringe needle is provided with can be stagewise to internal projecting ring.
4, a kind of all-destroyed disposable syringe according to claim 1, it is characterized in that the upper end that is positioned at annular recess on the described cone headed outer wall is provided with an outside bulge loop, the inwall that is positioned at the syringe needle internal taper hole is provided with corresponding groove, in the groove on the outside bulge loop on the nose cone is stuck in the syringe needle internal taper hole.
5, a kind of all-destroyed disposable syringe according to claim 1, the top that it is characterized in that described cone headed front end is provided with an outside bulge loop, the corresponding position of the internal taper hole of syringe needle is provided with a groove, and this vertical bulge loop snaps in the groove of syringe needle internal taper hole.
6, a kind of according to claim 1 or 5 all-destroyed disposable syringe is characterized in that the end of described syringe needle internal taper hole is distributed with annular aperture, and the position of this annular aperture is corresponding with cone headed thin-walled or annular recess.
7, a kind of all-destroyed disposable syringe according to claim 1 is characterized in that annular recess cross section set on the described nose cone is a triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98100616A CN1120730C (en) | 1998-02-13 | 1998-02-13 | All-destroyed disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98100616A CN1120730C (en) | 1998-02-13 | 1998-02-13 | All-destroyed disposable syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1225840A CN1225840A (en) | 1999-08-18 |
| CN1120730C true CN1120730C (en) | 2003-09-10 |
Family
ID=5216136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98100616A Expired - Fee Related CN1120730C (en) | 1998-02-13 | 1998-02-13 | All-destroyed disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1120730C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040039334A1 (en) * | 2000-07-25 | 2004-02-26 | Sai-Ling Li | Self-destructing syringe |
| US11363709B2 (en) * | 2017-02-24 | 2022-06-14 | BWXT Isotope Technology Group, Inc. | Irradiation targets for the production of radioisotopes |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4747830A (en) * | 1986-04-28 | 1988-05-31 | Gloyer Walter W | Anti-stick contagion free disposable hypodermic safety syringe |
| GB2210270A (en) * | 1987-09-26 | 1989-06-07 | Hans Skovgaard Jensen | Syringes and probe needles |
| US5024659A (en) * | 1990-01-10 | 1991-06-18 | Smith & Nephew Dyonics Inc. | Breakable needle and hinged needle guide |
| US5395346A (en) * | 1993-07-26 | 1995-03-07 | Maggioni; Tarcisio | Disposable syringe with a retractable needle |
| CN2215921Y (en) * | 1995-02-15 | 1995-12-27 | 张欢荣 | Destroyed type disposable injector |
| CN1121839A (en) * | 1994-08-01 | 1996-05-08 | 哈维尔工业有限公司 | Syringe |
-
1998
- 1998-02-13 CN CN98100616A patent/CN1120730C/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4747830A (en) * | 1986-04-28 | 1988-05-31 | Gloyer Walter W | Anti-stick contagion free disposable hypodermic safety syringe |
| GB2210270A (en) * | 1987-09-26 | 1989-06-07 | Hans Skovgaard Jensen | Syringes and probe needles |
| US5024659A (en) * | 1990-01-10 | 1991-06-18 | Smith & Nephew Dyonics Inc. | Breakable needle and hinged needle guide |
| US5395346A (en) * | 1993-07-26 | 1995-03-07 | Maggioni; Tarcisio | Disposable syringe with a retractable needle |
| CN1121839A (en) * | 1994-08-01 | 1996-05-08 | 哈维尔工业有限公司 | Syringe |
| CN2215921Y (en) * | 1995-02-15 | 1995-12-27 | 张欢荣 | Destroyed type disposable injector |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1225840A (en) | 1999-08-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |