CN100579600C - Safe self-destroyed syringe with greater force for preventing needle from withdrawing - Google Patents
Safe self-destroyed syringe with greater force for preventing needle from withdrawing Download PDFInfo
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- CN100579600C CN100579600C CN200810024166A CN200810024166A CN100579600C CN 100579600 C CN100579600 C CN 100579600C CN 200810024166 A CN200810024166 A CN 200810024166A CN 200810024166 A CN200810024166 A CN 200810024166A CN 100579600 C CN100579600 C CN 100579600C
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- needle stand
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Abstract
The invention relates to a safe self-destruction injector with greater needle withdrawal resistance force. A mounting part is arranged on the top of a jacket straight tube; a closing plug is arranged inside the jacket straight tube; a core rod extending out of the jacket straight tube is connected with the lower end of the closing plug; an outer heave is arranged on the outer surface of the core rod, and an inner heave is arranged on the jacket straight tube; a movable needle stand is inserted in the mounting part; a needle tube is arranged inside the movable needle stand; the outer heave is arranged on the side wall of the movable needle stand, and the inner heave is arranged on the inner surface of the mounting part; a latch hook is arranged on the bottom end of the movable needle stand; a takeup incline of the latch hook is arranged on the closing plug; a deflection hole is arranged under the takeup incline; a locking part that connects the closing plug and the latch hook into a whole is arranged on the closing plug; an orbicular groove is arranged on the outer surface of the movable needle stand; a orbicular depression which is matched with the groove is arranged on the inner wall of the mounting part at the groove; an elastic packing ring which forms a interference fit with the groove and the depression, is arranged in the groove and the depression. The safe self-destruction injector has greater force for resisting needle withdrawal, realizes the self-destruction after injecting, and has the characteristic of low force for pulling back a syringe needle.
Description
Technical field
The present invention relates to technical field of medical, especially a kind of safe self-breaking syringe with greater force for preventing needle from withdrawing.
Background technology
At present self-destroyed syringe is of a great variety, and safety injector is also a lot, but it is few self-destruction to reach the syringe of safe effect again.The structure of Generally Recognized as safe syringe is the form based on retractable needles mostly, exists the technical contradiction utmost point in this structure and is difficult to resolve certainly, prevents when promptly having an acupuncture treatment that the power of the withdraw of the needle from must want big contradiction than the power of artificial (automatically) retracted needle.If it is big that the power of location (preventing the withdraw of the needle) is set, can prevent the withdraw of the needle, then the power of retracted needle can be become heavy equally, and can be bigger, is not easy to realize safety; If it is little that the power of location (preventing the withdraw of the needle) is set, realize safety easily, but prevent that the power of the withdraw of the needle is also little.By instructions for use, prevent that the power of the withdraw of the needle from wanting big, preferably can exceed 50N, the power that retracts syringe needle of contracting is little, preferably can be convenient to one-handed performance less than 20N.This power is to determine by the fixed form of movable needle stand.Existing safety injector is easy to when clinical acupuncture treatment because of needle point anti-back power is not enough, and in the own retract syringes overcoat of needle point, it is to cause malpractice everywhere on patient body that medicinal liquid leaks.As seen still there are a lot of shortcoming and defect in existing safety injector, still needs existing safety injector is further transformed.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, provide that a kind of power that prevents the withdraw of the needle is big, can realize the syringe of self-destruction after the injection.
According to technical scheme provided by the invention, the piped installation portion that internal diameter shrinks is set on overcoat straight tube top, in the overcoat straight tube, be provided with sealing-plug, described sealing-plug lower end is connected with the core bar that stretches out the overcoat straight tube, described core bar outer surface is provided with first outer lug, correspondingly, be provided with first internal projection that first outer lug is stopped at the overcoat straight tube, be plugged with the active pointer seat in the installation portion, be provided with needle tubing in the movable needle stand, the overcoat straight tube internal cavities that movable needle stand and sealing-plug are enclosed is injection storage chamber, the entrance point of needle tubing is communicated with injection storage chamber, movable needle stand sidewall is provided with second outer lug, correspondingly, be provided with second internal projection that second outer lug is stopped at the installation portion inner surface, be provided with the hook that stretches into injection storage intracavity in movable needle stand bottom, on sealing-plug, be provided with the inclined-plane that tightens up of hook, the below of tightening up the inclined-plane is provided with the deflection hole, the axis in described deflection hole and the axis of overcoat straight tube are the deflection setting, on sealing-plug, be provided with the buckling parts that sealing-plug is connected one with hook, the outer surface of movable needle stand is provided with cyclic groove, the installation portion inwall of described groove is provided with the depression in the form of a ring with groove fit, is provided with the elastic sealing ring with they interference fit in groove and depression.
The installation portion endoporus of second internal projection below is cylindric or upright round table-like, and the internal face connecting portion of installation portion and overcoat straight tube is step-like.
Described movable needle stand is split type, it comprises needle stand and following needle stand, last needle stand sidewall is provided with second outer lug, below second outer lug, be provided with the base of gathering, the bottom outer wall of base is provided with outer coupler body, infra needle stand top is provided with the ring-type wall body, described base embeds in the cavity of ring-type wall body, and the upper end inner surface of ring-type wall body is provided with the interior coupler body that cooperates with outer coupler body, be provided with ring-type at ring-type wall body top outer surface and lack piece, described ring-type lacks piece and last needle stand sidewall is provided with second outer lug formation groove.
Offer a horizontal hole, tunnel on the following needle stand of ring-type wall body lower end, the entrance point of needle tubing and hole, tunnel middle part is connected, and the following needle stand outer wall and the installation portion inwall that are positioned at ring-type wall body lower end leave the slit.On the core bar below first outer lug, offer the mouth that fractures.The angle excursion of the axis of the axis in deflection hole and overcoat straight tube is 1 °～10 °.
The present invention prevents that the power of the withdraw of the needle is bigger, can realize self-destruction after the injection, and has the power features of smaller that contracts and retract syringe needle.
Description of drawings
Fig. 1 is an overall structure sketch map of the present invention.
Fig. 2 is the structure enlarged drawing of the last needle stand among the present invention, following needle stand and installation portion.
The specific embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
As shown in the figure: the piped installation portion 24 that is the internal diameter contraction that is provided with on overcoat straight tube 1 top, in overcoat straight tube 1, be provided with sealing-plug 7, described sealing-plug 7 lower ends are connected with the core bar 6 that stretches out overcoat straight tube 1, described core bar 6 outer surfaces are provided with first outer lug 60, correspondingly, be provided with first internal projection 101 that first outer lug 60 is stopped at overcoat straight tube 1, be plugged with the active pointer seat in the installation portion 24, be provided with needle tubing 17 in the movable needle stand, overcoat straight tube 1 internal cavities that movable needle stand and sealing-plug 7 are enclosed is injection storage chamber 22, the entrance point of needle tubing 17 is communicated with injection storage chamber 22, movable needle stand sidewall is provided with second outer lug 201, correspondingly, be provided with second internal projection 240 that second outer lug 201 is stopped at installation portion 24 inner surfacies, be provided with the hook 13 that stretches in the injection storage chamber 22 in movable needle stand bottom, what be provided with hook 13 on sealing-plug 7 tightens up inclined-plane 14, the below of tightening up inclined-plane 14 is provided with deflection hole 15, the axis in described deflection hole 15 and the axis of overcoat straight tube 1 are the deflection setting, on sealing-plug 7, be provided with the buckling parts 16 that sealing-plug 7 is connected one with hook 13, the outer surface of movable needle stand is provided with cyclic groove 8, installation portion 24 inwalls at described groove 8 places are provided with the depression in the form of a ring 9 that cooperates with groove 8, in groove 3 and depression 9, be provided with elastic sealing ring 4 with they interference fit, elastic sealing ring 4 produces big stiction with depression 9, and when injection, last needle stand 2 presses down, 9 lower edge that cave in certainly lead to and act on the elastic sealing ring 4 and thrust that direction is tilted to, have made the retaining of going up needle stand 2 when this frictional force and thrust have been enough to make injection.
Described movable needle stand is split type, it comprises needle stand 2 and following needle stand 3, by welding block 18 needle tubing 17 is connected as a single entity on the last needle stand 2, last needle stand 2 sidewalls are provided with second outer lug 201, below second outer lug 201, be provided with the base 23 of gathering, the bottom outer wall of base 23 is provided with outer coupler body 11, infra needle stand 3 tops are provided with ring-type wall body 30, described base 23 embeds in the cavity of ring-type wall body 30, and the upper end inner surface of ring-type wall body 30 is provided with the interior coupler body 10 that cooperates with outer coupler body 11, be provided with ring-type at ring-type wall body 30 top outer surfaces and lack piece 31, described ring-type lacks piece 31 and forms groove 8 with second outer lug 201 that last needle stand 2 sidewalls are provided with.
On the following needle stand 3 of ring-type wall body 30 lower ends, offer a horizontal hole, tunnel 12, the entrance point of needle tubing 17 is connected with 12 middle parts, hole, tunnel, and following needle stand 3 outer walls and installation portion 24 inwalls that are positioned at ring-type wall body 30 lower ends leave slit 5, leave gap 5 between following needle stand 3 and the installation portion 24, can effectively hold bubble, improve the problem of bubble in the injection storage chamber 22.On the core bar 6 below first outer lug 60, offer the mouth 20 that fractures.The angle excursion of the axis of the axis in deflection hole 15 and overcoat straight tube 1 is 1 °～10 °.
Using method and operation principle are as follows:
When clinical use, carrying out medicinal liquid according to a conventional method extracts and injects, when the injector to inject medicinal liquid, elastic sealing ring 4 is by the groove 8 of needle stand 3 and the depression 9 of installation portion 24 are being kept off down, make that going up needle stand 2 anti-back power heightens, at this moment, the hook of two lobe tapers on the following needle stand 3 13 is tightened up inclined-plane 14 and is produced deformation and slowly inwardly gathering.Because what sealing-plug 7 was provided with hook 13 tightens up inclined-plane 14, the below of tightening up inclined-plane 14 is provided with deflection hole 15, on sealing-plug 7, be provided with the buckling parts 16 that sealing-plug 7 is connected one with hook 13, along with the slow injection of medicinal liquid after having injected, hook 13 is also slowly taken in to the buckling parts 16 of 15 belows, deflection hole, it is the hook 13 of needle stand 3 under the sealing-plug 7 complete interlocks, sealing-plug 7 twists and injection needle 17 is kept vertical state at this moment, both are combined into firm one, can not throw off again.
Pulling core bar 6 is taken out and is moved back, this moment, elastic sealing ring 4 and last needle stand 2 were motionless, infra needle stand 3 is with after elastic sealing ring 4 separates, utilize elastic sealing ring 4 rubber properties inwardly to relax, no longer by the groove 8 of needle stand 3 and the depression 9 of installation portion 24 are being kept off down, make that going up needle stand 2 anti-back power disappears, the interior coupler body 10 of the upper end inner surface of the ring-type wall body 30 of following needle stand 3 hooks the outer coupler body 11 of bottom outer wall of the base 23 of needle stand 2, promptly can be withdrawn in the overcoat straight tube 1 with following needle stand 3 going up needle stand 2 easily.
Because 1 °～10 ° of cylindrical portion 15 deflections of sealing-plug 7 endoporus, the injection needle 17 that is retracted in 1 li of overcoat straight tube is at sealing-plug 7 elastic force effect meeting disalignment lines, be against on the step-like junction of overcoat straight tube 1 and installation portion 24, again can not push away overcoat, can not stab medical personnel and cleaning employee again, realize self-destruction and safe functioning.
Claims (6)
1, a kind of safe self-breaking syringe with greater force for preventing needle from withdrawing, be included in the piped installation portion (24) that is the internal diameter contraction that overcoat straight tube (1) top is provided with, in overcoat straight tube (1), be provided with sealing-plug (7), described sealing-plug (7) lower end is connected with the core bar (6) that stretches out overcoat straight tube (1), described core bar (6) outer surface is provided with first outer lug (60), correspondingly, be provided with first internal projection (101) that first outer lug (60) is stopped at overcoat straight tube (1), installation portion is plugged with the active pointer seat in (24), be provided with needle tubing (17) in the movable needle stand, overcoat straight tube (1) internal cavities that movable needle stand and sealing-plug (7) are enclosed is injection storage chamber (22), the entrance point of needle tubing (17) is communicated with injection storage chamber (22), movable needle stand sidewall is provided with second outer lug (201), correspondingly, be provided with second internal projection (240) that second outer lug (201) is stopped at installation portion (24) inner surface, be provided with the hook (13) that stretches in the injection storage chamber (22) in movable needle stand bottom, what be provided with hook (13) on sealing-plug (7) tightens up inclined-plane (14), the below of tightening up inclined-plane (14) is provided with deflection hole (15), the axis of the axis in described deflection hole (15) and overcoat straight tube (1) is the deflection setting, on sealing-plug (7), be provided with the buckling parts (16) that sealing-plug (7) is connected one with hook (13), it is characterized in that: the outer surface of movable needle stand is provided with cyclic groove (8), installation portion (24) inwall that described groove (8) is located is provided with the depression in the form of a ring (9) that cooperates with groove (8), is provided with the elastic sealing ring (4) with they interference fit in groove (8) and depression (9).
2, the safe self-breaking syringe with greater force for preventing needle from withdrawing as claimed in claim 1, it is characterized in that: installation portion (24) endoporus of second internal projection (240) below is cylindric or upright round table-like, and the internal face connecting portion of installation portion (24) and overcoat straight tube (1) is step-like.
3, safe self-breaking syringe with greater force for preventing needle from withdrawing as claimed in claim 1, it is characterized in that: described movable needle stand is split type, it comprises needle stand (2) and following needle stand (3), last needle stand (2) sidewall is provided with second outer lug (201), be provided with the base (23) of gathering in second outer lug (201) below, the bottom outer wall of base (23) is provided with outer coupler body (11), infra needle stand (3) top is provided with ring-type wall body (30), described base (23) embeds in the cavity of ring-type wall body (30), and the upper end inner surface of ring-type wall body (30) is provided with the interior coupler body (10) that cooperates with outer coupler body (11), be provided with ring-type at ring-type wall body (30) top outer surface and lack piece (31), described ring-type lacks piece (31) and is provided with second outer lug (201) formation groove (8) with last needle stand (2) sidewall.
4, the safe self-breaking syringe with greater force for preventing needle from withdrawing as claimed in claim 3, it is characterized in that: on the following needle stand (3) of ring-type wall body (30) lower end, offer a horizontal hole, tunnel (12), the entrance point of needle tubing (17) and hole, tunnel (12) middle part is connected, and following needle stand (3) outer wall and installation portion (24) inwall that are positioned at ring-type wall body (30) lower end leave slit (5).
5, the safe self-breaking syringe with greater force for preventing needle from withdrawing as claimed in claim 1 is characterized in that: offer on the core bar (6) of first outer lug (60) below fracture mouthful (20).
6, the safe self-breaking syringe with greater force for preventing needle from withdrawing as claimed in claim 1 is characterized in that: the angle excursion of the axis of the axis of deflection hole (15) and overcoat straight tube (1) is 1 °～10 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810024166A CN100579600C (en) | 2008-05-19 | 2008-05-19 | Safe self-destroyed syringe with greater force for preventing needle from withdrawing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810024166A CN100579600C (en) | 2008-05-19 | 2008-05-19 | Safe self-destroyed syringe with greater force for preventing needle from withdrawing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101284155A CN101284155A (en) | 2008-10-15 |
| CN100579600C true CN100579600C (en) | 2010-01-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810024166A Active CN100579600C (en) | 2008-05-19 | 2008-05-19 | Safe self-destroyed syringe with greater force for preventing needle from withdrawing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100579600C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201194975Y (en) * | 2008-02-25 | 2009-02-18 | 周令刚 | Safety self-breaking syringe |
| CN101428162B (en) * | 2008-12-09 | 2010-12-08 | 宣庆弟 | Disposable syringe |
| CN110612134B (en) * | 2017-05-05 | 2022-06-14 | 里珍纳龙药品有限公司 | Auto-injectors and related methods of use |
| CN108034579B (en) * | 2017-12-08 | 2024-05-03 | 深圳市博瑞生物科技有限公司 | Sample loading device |
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2008
- 2008-05-19 CN CN200810024166A patent/CN100579600C/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN101284155A (en) | 2008-10-15 |
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| PB01 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WUXI YUSHOU MEDICAL APPARATUS CO., LTD. Free format text: FORMER OWNER: OTOTER (CHINA) MEDICAL TECHNOLOGY CO., LTD. Effective date: 20110720 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 214028 NO. A2, PLOT 94, XINHUA ROAD, WUXI NEW DISTRICT, JIANGSU PROVINCE TO: 214191 NO. 215, XIGANG ROAD, DONGBEITANG TOWN, WUXI CITY, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20110720 Address after: 214191 No. 215, Tin Road, Northeast Tong Town, Wuxi, Jiangsu Patentee after: Wuxi Yushou Medical Apparatus Co., Ltd. Address before: 214028, No. 94, block A2, Xinhua Road New District, Jiangsu, Wuxi Patentee before: Otter (China) Medical Technology Limited |
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| C56 | Change in the name or address of the patentee |
Owner name: WUXI CITY YUSHOU MEDICAL APPLIANCES CO., LTD. Free format text: FORMER NAME: WUXI YUSHOU MEDICAL APPARATUS CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 214191 No. 215, Tin Road, Northeast Tong Town, Wuxi, Jiangsu Patentee after: Wuxi Yushou Medical Appliances Co., Ltd. Address before: 214191 No. 215, Tin Road, Northeast Tong Town, Wuxi, Jiangsu Patentee before: Wuxi Yushou Medical Apparatus Co., Ltd. |
|
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 214191 No. 215, Tin Road, Northeast Tong Town, Wuxi, Jiangsu Patentee after: Wuxi Yushou Medical Apparatus Co., Ltd. Address before: 214191 No. 215, Tin Road, Northeast Tong Town, Wuxi, Jiangsu Patentee before: Wuxi Yushou Medical Appliances Co., Ltd. |