CN101780296B - Steel needle self-shrinking syringe - Google Patents
Steel needle self-shrinking syringe Download PDFInfo
- Publication number
- CN101780296B CN101780296B CN200910265230XA CN200910265230A CN101780296B CN 101780296 B CN101780296 B CN 101780296B CN 200910265230X A CN200910265230X A CN 200910265230XA CN 200910265230 A CN200910265230 A CN 200910265230A CN 101780296 B CN101780296 B CN 101780296B
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- China
- Prior art keywords
- inner core
- sleeve
- steel needle
- joint
- dop
- 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.)
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 27
- 239000010959 steel Substances 0.000 title claims abstract description 27
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims abstract description 7
- 238000007906 compression Methods 0.000 claims abstract description 7
- 238000007665 sagging Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 description 27
- 239000007924 injection Substances 0.000 description 27
- 239000007788 liquid Substances 0.000 description 9
- 210000003462 vein Anatomy 0.000 description 6
- 206010011409 Cross infection Diseases 0.000 description 3
- 206010029803 Nosocomial infection Diseases 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000008280 blood Substances 0.000 description 2
- 210000004369 blood Anatomy 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 208000030507 AIDS Diseases 0.000 description 1
- 208000012260 Accidental injury Diseases 0.000 description 1
- 208000012266 Needlestick injury Diseases 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000006806 disease prevention Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Images
Abstract
The invention discloses a steel needle self-shrinking syringe which comprises a sleeve, a hollow inner core, a steel needle, a joint and a needle sleeve, wherein the hollow inner core is installed in the sleeve, the joint is installed at the head of the sleeve, the needle sleeve is used for protecting the steel needle, a sealing part is arranged at the upper end of the inner core, the joint is provided with a joint sealing part, a compression structure for compressing an elastic steel wire is arranged at the upper end of the joint, at least two clamping heads are arranged at the lower end of the joint, a gap exists between the clamping heads, a protuberant part is arranged on the edge of each clamping head, the protuberant part and a clamping step of the sleeve are mutually clamped, an extension part which can cause the cohesion of each clamping head and further cause the protuberant parts to be disengaged from the clamping step of the sleeve after being oppositely inserted in and matched with an inner core bayonet is arranged at the lower end of each clamping head, the bayonet is arranged at the head of the inner core, and a fissile belt is arranged at the top surface of the inner core. The invention has the characteristics of simple structure, convenient operation and no danger.
Description
Technical field
The present invention relates to a kind of medical supplies, be specially steel needle self-shrinking syringe.
Background technology
The tube of having an injection is a kind of medical apparatus commonly used, and the widely used tube of having an injection of medical institutions all adopts single to use at present.Yet; The tube of having an injection that this " single " in theory uses still exists to be exposed by draw point in reusable danger of lawless person and the offal treatment process stabs the cross infection hidden danger that human body causes; The single that exists on the domestic market uses the tube of having an injection because its structure and technical scheme exist not enough; Can not guarantee does not have the enforcement that cross infection is had an injection; And medical personnel the cross infection of pathogenic bacteria inevitably can occur because of the damage that the needle stick injuries of using the common tube of having an injection to cause obviously causes more than other accidents, have brought serious threat for medical personnel's health of human body.
U.S.'s disease prevention and the whole world AIDS project China director Ye Lei of control centre point out, solve dangerous best approach of having an injection and are to use single to use the tube of having an injection that unmakes.WHO (World Health Organization (WHO)) in 1994 harmless requirement of having an injection of proposition and definition: harmless to the receiver, harmless to user, harmless to environment with other people.
Summary of the invention
To the problems referred to above, the object of the present invention is to provide a kind of steel needle self-shrinking syringe, have simple in structure, easy to operate, non-hazardous characteristics.
For realizing above-mentioned purpose, realize through following technical scheme:
Steel needle self-shrinking syringe; Include a sleeve, be installed in hollow inner core, the draw point in the sleeve, the needle guard that is installed in the joint of sleeve head and is used for protecting draw point, the inner core upper end has sealing member, and joint has splice seal; It is characterized in that: described upper end of joint has the pressure texture of elasticity of compression steel wire; The joint lower end has two dops at least, and is gapped between the dop, and there is jut at the edge of dop; Jut engages with telescopic screens step each other; The dop lower end has and can cause after with the inner core bayonet socket inserting being closed dop cohesion and then cause jut to break away from the extension of sleeve screens step, described in core head bayonet socket is arranged, the end face of inner core has and is prone to split band.
Described being prone to split last end face and the sagging face junction that band is arranged on inner core, and end seal covers end face on the inner core, has compressible cavity between sealing member and the sagging face.
Describedly be prone to split band, be annular, its thinnest part thickness δ scope is between 0.2～0.3mm, is torn under external force easily.
Described extension has can reduce the tilting section of inserting resistance and the flat segments that prevents slotting depth error.
But described joint is made up of joint body and changing-over headgear, but wherein draw point is connected on the changing-over headgear.
Said sleeve top has and is used for the card neck of screens elastic wire, and card neck and sleeve are one-body molded.
Said sleeve head is socketed with a fixed cover, has on this fixed cover to be used for the card neck of screens elastic wire.
Said inner core bayonet socket is an annular groove, and extension, dop lower end is to injecting in the inner core bayonet socket, can cause dop cohesion and then cause jut to break away from sleeve screens step.
There is the preceding screens step that is used for engaging inner core when after inner core receives elastic wire power, sliding described sleeve lining upper end.
There is the back screens step that is used for engaging inner core when after inner core receives elastic wire power, sliding described sleeve lining lower end, and inner core lower end one is extended projection and matched with telescopic back screens step.
Have on the end face of described inner core bayonet socket and can cause bias voltage, minimizing to be prone to split the salient point of band tearing resistance.
The core head top plug has the interior plug that has bayonet socket in described, and in the core head, contact surface formed and is prone to split band between Nei Sai and the interior core head in interior plug was fixed on through extruding force, frictional force or cohesive force.
Compare prior art, the present invention has following advantage:
1. draw point of the present invention and joint thereof remain at interior in-core after completion excites, do not cause accidental injury thereby can not stretch out the barrel forward end face, can thoroughly eliminate the risk of a recycling process to operator of having an injection.
2. the advantage that joint upper chuck of the present invention and inner core upper latch notch cooperatively interact: before unmaking, joint receives the elastic wire compressing, and dop has the trend of turning up, and causes dop jut and sleeve screens step to combine trend more firm; When unmaking, use very little longitudinal force just can cause dop cohesion through bayonet socket, and then cause the dop jut to break away from sleeve screens step.This cooperation solved steel needle self-shrinking syringe ubiquitous joint card incessantly, the problem of Song Bukai.
3. the present invention is prone to split last end face and the sagging face junction that band is arranged on inner core, and end seal covers end face on the inner core, has compressible cavity between sealing member and the sagging face.This structure will be unmake and will be divided into for two steps: the first step, shift the inner core sealing member onto the sleeve bottom surface and make medicinal liquid throw human body fully into; This moment, joint got loose from sleeve screens step; The tube of having an injection can't reuse to be realized unmaking; Do not tear as yet but be prone to split band, can not occur medicinal liquid from be prone to split the band tear place and backflow or vein when having an injection venous blood backflow from being prone to split the band tear place, solved the ubiquitous medicinal liquid of other steel needle self-shrinking syringes residual with the problem of can't vein having an injection; After second step, draw point are extracted human body, press inner core before continuing, the compression compressible space is torn simultaneously and is prone to split band, realizes that draw point from contracting, thoroughly unmakes.The two step patterns of unmaking have guaranteed that promptly medicinal liquid played the tube of having an injection simultaneously and unmake, and have solved the problem that medicinal liquid is residual and can't vein have an injection again.
4. of the present invention simple in structure, fit dimension requires low, and automaticity is high, is fit to volume production.
5. the mechanism of unmaking of the present invention is simple and easy to usefulness, does not increase any special operational, user of service's easy master.
6. the present invention utilizes elastic wire power from contracting draw point, has reduced the user of service extracts draw point after the end of having an injection step.
Description of drawings
Fig. 1 is an integral installation distribution structure sketch map of the present invention;
Fig. 2 is a joint design sketch map of the present invention;
Fig. 3 is an A indication position enlarged diagram among Fig. 1;
The structural representation that Fig. 4 is about to for the present invention has an injection to finish, the dop projection gets loose from sleeve screens step;
Fig. 5 is prone to split the structural representation that band is torn for the present invention;
Fig. 6 is the present invention's structural representation that finishes that unmakes;
Fig. 7 is the core arrangement sketch map of the 2nd kind of embodiment of the present invention;
Fig. 8 is a B indication position enlarged diagram among Fig. 7;
Fig. 9 is the 2nd kind of structural representation that the embodiment first step is unmake of the present invention;
Figure 10 tears for the 2nd kind of embodiment of the present invention is prone to split band, promptly second goes on foot the structural representation that unmakes;
Figure 11 is the 2nd kind of embodiment of the present invention structural representation that finishes that unmakes;
Figure 12 is screens structural representation before the sleeve of the present invention;
Figure 13 is screens structural representation behind the sleeve of the present invention;
Figure 14 is a C indication position enlarged drawing in 13;
But Figure 15 is the embodiment sketch map of the present invention's changing-over headgear;
Figure 16 is for being provided with the embodiment sketch map of card neck on the sleeve of the present invention through fixed cover;
Figure 17 is provided with the embodiment sketch map of interior plug for core head in the present invention;
Figure 18 is provided with another embodiment sketch map of interior plug for core head in the present invention.
The specific embodiment
Below in conjunction with accompanying drawing the present invention is done further description.
As shown in Figure 1, steel needle self-shrinking syringe includes a sleeve 1, is installed in the hollow inner core 2 in the sleeve 1, the needle guard 5 that is installed in the joint 3 of sleeve 1 head and is used for protecting draw point 4; Inner core 2 upper ends have sealing member 21, and joint 3 has splice seal 31, and there is the pressure texture 32 of elasticity of compression steel wire 6 joint 3 upper ends; Joint 3 lower ends have two dops 33 at least; Gapped 34 between the dop 33, there is jut 331 at the edge of dop 33, and jut 331 engages with the screens step 11 of sleeve 1 each other; Inner core 2 heads have bayonet socket 22; The end face of inner core 2 has to be prone to split is with 23, and sleeve 1 top has and is used for the card neck 12 of screens elastic wire 6, and elastic wire 6 compression shapes are stuck between sleeve 1 head and the joint 3.As shown in Figure 2; There is the pressure texture 32 of elasticity of compression steel wire 6 joint 3 upper ends; There are at least two dops 33 lower end; Gapped 34 between the dop 33, there is jut 331 at the edge of dop 33, extension 332 have can reduce to the tilting section 333 of inserting resistance with prevent inserting the flat segments 334 of depth error.As shown in Figure 3, be prone to split and be with 23, be annular, its thinnest part thickness δ scope is between 0.2 ~ 0.3mm, is torn under external force easily.
The sketch map of having an injection that being illustrated in figure 4 as has an injection is about to finish, the dop projection gets loose from sleeve screens step; Have space between sealing member 21 and cover tube bottom this moment; Inner core 2 is pushed into bayonet socket 22 on its head and plugs each other to cooperate with the extension 332 of joint dop 33 and cause dop 33 cohesion each other; Dop projection 331 gets loose from sleeve screens step 11, and elastic wire 6 limit of stretch are removed; As shown in Figure 5; After the operator has applied an external force F to inner core 2; Sealing member 21 arrives the completion of cover tube bottom and has an injection; Being prone to split and being with 23 to be torn apart of inner core 2 end faces simultaneously, the elastic wire 6 of in Fig. 4, having removed limit of stretch begins to stretch, its stretching force make elastic wire 6, draw point 4, joint 3 and by the inner core bayonet socket part of peeling off after tearing 22 to the hollow reservoir 24 of inner core 2 from contracting; As shown in Figure 6, elastic wire 6, draw point 4, joint 3 and complete in the hollow reservoir 24 of indentation inner core 2 by the inner core bayonet socket part of peeling off after tearing 22.
Like Fig. 7, shown in 8; Enforcement structure for another kind of inner core; Wherein be prone to split with 23 ' be arranged on the last end face 25 and sagging face 26 junctions of inner core 2, end seal 21 covers end face 25 on the inner core 2, has compressible cavity 27 between sealing member 21 and the sagging face 26.This structure will be unmake and will be divided into for two steps: as shown in Figure 9; The first step, shift the sealing member 21 of inner core 2 onto sleeve 1 bottom surface and accomplish and to have an injection, inner core 2 bayonet sockets 22 plug each other to cooperate with dop 33 and cause dop 33 cohesion each other simultaneously, and dop projection 331 gets loose from sleeve screens step 11; Elastic wire 6 limit of stretch are removed; The tube of having an injection can't reuse, and realizes that the first step unmakes, but being prone to split is with 23 ' do not tear as yet; Can not occur medicinal liquid from be prone to split the band tear place and backflow or vein when having an injection venous blood backflow from being prone to split the band tear place, solved the ubiquitous medicinal liquid of other steel needle self-shrinking syringes residual with the problem of can't vein having an injection; Second the step, like Figure 10, shown in 11; After the completion draw point of having an injection is extracted human body; Continue to push away inner core 2; Compress compressible cavity 27 tear simultaneously be prone to split with 23 ' back elastic wire 6 stretch drive whole elastic wire 6, draw point 4, joint 3 and by the inner core bayonet socket part of peeling off after tearing 22 to the hollow reservoir 24 of inner core 2 from contracting until fully, after breaking away from human body, accomplished for second step to unmake.The two step patterns of unmaking have guaranteed that promptly medicinal liquid played the tube of having an injection simultaneously and unmake, and have solved the problem that medicinal liquid is residual and can't vein have an injection again.
Shown in figure 12, there is the preceding screens step 13 that is used for engaging inner core 2 when after inner core 2 receives elastic wire 6 stretching forces, sliding sleeve 1 inwall upper end.Shown in figure 13, there is the back screens step 14 that is used for engaging inner core 2 when after inner core 2 receives elastic wire 6 stretching forces, sliding sleeve 1 inwall lower end, and inner core 2 lower ends one are extended projection 28 and matched with the back screens step 14 of sleeve 1.
Shown in figure 14, inner core bayonet socket 22 is an annular groove, has on the end face of inner core bayonet socket 22 to cause bias voltage, minimizing to be prone to split the salient point 221 of band tearing resistance.
Shown in figure 15, but joint 3 forms by joint body 35 and changing-over headgear 36, but wherein draw point 4 is connected on the changing-over headgear 36, adopts this mode can solve the demand of replacing draw point.
Shown in figure 16, sleeve 1 head is socketed with a fixed cover 15, has on this fixed cover 15 to be used for the card neck 12 of screens elastic wire 6.
Shown in figure 17, be plugged with the interior plug 29 that has bayonet socket 22 on inner core 2 heads, wherein in plug 29 be fixed in inner core 2 heads through extruding force, frictional force or cohesive force, contact surface forms to be prone to split and is with 23 between interior plug 29 and inner core 2 heads ".Be prone under external force split and be with 23 and " tear apart after can being extruded, also can adopt another embodiment shown in figure 18 to realize.
Those of ordinary skill in the art should be realized that; Above embodiment just is used for explaining the present invention; But not as to qualification of the present invention,, all will drop in the claim scope of the present invention variation or the modification of above embodiment as long as in essence scope of design of the present invention.
Claims (10)
1. steel needle self-shrinking syringe; Include a sleeve, elastic wire, be installed in hollow inner core, the draw point in the sleeve, the needle guard that is installed in the joint of sleeve head and is used for protecting draw point, the inner core upper end has sealing member, and joint has splice seal; It is characterized in that: core head has bayonet socket in described; Described upper end of joint has the pressure texture of elasticity of compression steel wire, and there are at least two dops the lower end, and is gapped between the dop; There is jut at the edge of dop; Jut engages with telescopic screens step each other, and the dop lower end has and can cause dop cohesion and then cause jut to break away from the extension of sleeve screens step after said bayonet socket with inner core closes inserting, and end face and sagging face junction are provided with and are prone to split band on inner core; End seal covers end face on the inner core, has compressible cavity between the sealing member of inner core upper end and the sagging face.
2. steel needle self-shrinking syringe as claimed in claim 1 is characterized in that: described be prone to split the band for the annular, its thinnest part thickness range is between 0.2～0.3mm, is torn under external force easily.
3. according to claim 1 or claim 2 steel needle self-shrinking syringe is characterized in that: described extension have can reduce to the tilting section of inserting resistance with prevent inserting the flat segments of depth error.
4. steel needle self-shrinking syringe as claimed in claim 3 is characterized in that: but described joint form by joint body and changing-over headgear, but wherein draw point is connected on the changing-over headgear.
5. steel needle self-shrinking syringe as claimed in claim 3 is characterized in that: said sleeve top has and is used for the card neck of screens elastic wire, and card neck and sleeve are one-body molded.
6. steel needle self-shrinking syringe as claimed in claim 3 is characterized in that: said sleeve head is socketed with a fixed cover, has on this fixed cover to be used for the card neck of screens elastic wire.
7. steel needle self-shrinking syringe as claimed in claim 3 is characterized in that: the inner core bayonet socket is an annular groove, and extension, dop lower end is to injecting in the inner core bayonet socket, can cause dop cohesion and then cause jut to break away from sleeve screens step.
8. steel needle self-shrinking syringe as claimed in claim 1 is characterized in that: there is the preceding screens step that is used for engaging inner core when after inner core receives elastic wire power, sliding described sleeve lining upper end.
9. steel needle self-shrinking syringe as claimed in claim 1; It is characterized in that: there is the back screens step that is used for engaging inner core when after inner core receives elastic wire power, sliding described sleeve lining lower end, and inner core lower end one is extended projection and matched with telescopic back screens step.
10. steel needle self-shrinking syringe as claimed in claim 3 is characterized in that: have on the end face of described inner core bayonet socket and can cause bias voltage, reduce the salient point be prone to split the band tearing resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910265230XA CN101780296B (en) | 2009-08-17 | 2009-12-17 | Steel needle self-shrinking syringe |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910305690 | 2009-08-17 | ||
| CN200910305690.0 | 2009-08-17 | ||
| CN200910265230XA CN101780296B (en) | 2009-08-17 | 2009-12-17 | Steel needle self-shrinking syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101780296A CN101780296A (en) | 2010-07-21 |
| CN101780296B true CN101780296B (en) | 2012-05-23 |
Family
ID=42520520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910265230XA Active CN101780296B (en) | 2009-08-17 | 2009-12-17 | Steel needle self-shrinking syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101780296B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049285A (en) * | 1989-07-11 | 1991-02-20 | 格里哈姆·享格·维廉姆斯 | The disposable hypodermic syringe of retractable needle |
| CN1133469C (en) * | 1991-04-11 | 2004-01-07 | 塞福·T·有限公司 | Retractable syringe etc. needles |
| CN2829758Y (en) * | 2005-07-15 | 2006-10-25 | 山东省医疗器械研究所 | Disposable manual retrieving safety injector |
| CN100391554C (en) * | 2006-04-13 | 2008-06-04 | 林作钱 | Safe medical syringe with needle capable of automatically retracting |
| CN100393374C (en) * | 2006-04-10 | 2008-06-11 | 余利荣 | Safe low-resistance syringe with withdrawn needle |
| CN201510602U (en) * | 2009-08-17 | 2010-06-23 | 李华美 | Steel needle self-shrinking syringe tube with two-step shape-destroying inner core |
-
2009
- 2009-12-17 CN CN200910265230XA patent/CN101780296B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1049285A (en) * | 1989-07-11 | 1991-02-20 | 格里哈姆·享格·维廉姆斯 | The disposable hypodermic syringe of retractable needle |
| CN1133469C (en) * | 1991-04-11 | 2004-01-07 | 塞福·T·有限公司 | Retractable syringe etc. needles |
| CN2829758Y (en) * | 2005-07-15 | 2006-10-25 | 山东省医疗器械研究所 | Disposable manual retrieving safety injector |
| CN100393374C (en) * | 2006-04-10 | 2008-06-11 | 余利荣 | Safe low-resistance syringe with withdrawn needle |
| CN100391554C (en) * | 2006-04-13 | 2008-06-04 | 林作钱 | Safe medical syringe with needle capable of automatically retracting |
| CN201510602U (en) * | 2009-08-17 | 2010-06-23 | 李华美 | Steel needle self-shrinking syringe tube with two-step shape-destroying inner core |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101780296A (en) | 2010-07-21 |
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Owner name: ZHEJIANG KANGTAI MEDICAL DEVICES CO., LTD. Free format text: FORMER OWNER: LI HUAMEI Effective date: 20130118 |
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Free format text: CORRECT: ADDRESS; FROM: 317000 TAIZHOU, ZHEJIANG PROVINCE TO: 317004 TAIZHOU, ZHEJIANG PROVINCE |
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Effective date of registration: 20130118 Address after: 317004, No. 753, Dongfang Avenue, Taizhou, Zhejiang Patentee after: ZHEJIANG KANGTAI MEDICAL DEVICES Co.,Ltd. Address before: 317000 Zhejiang Province coastal city streets blueshield garden building B-6 Patentee before: Li Huamei |
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Denomination of invention: Steel needle self-shrinking syringe Effective date of registration: 20190617 Granted publication date: 20120523 Pledgee: Zhejiang Rural Commercial Bank of China branch of Limited by Share Ltd. Pledgor: ZHEJIANG KANGTAI MEDICAL DEVICES Co.,Ltd. Registration number: 2019330000160 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20220617 Granted publication date: 20120523 Pledgee: Zhejiang Rural Commercial Bank of China branch of Limited by Share Ltd. Pledgor: ZHEJIANG KANGTAI MEDICAL DEVICES Co.,Ltd. Registration number: 2019330000160 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Steel needle self-shrinking syringe Effective date of registration: 20220729 Granted publication date: 20120523 Pledgee: Zhejiang Rural Commercial Bank of China branch of Limited by Share Ltd. Pledgor: ZHEJIANG KANGTAI MEDICAL DEVICES Co.,Ltd. Registration number: Y2022330001558 |