CN101780297A - Quantitative self-destruct syringe - Google Patents
Quantitative self-destruct syringe Download PDFInfo
- Publication number
- CN101780297A CN101780297A CN201019146021A CN201019146021A CN101780297A CN 101780297 A CN101780297 A CN 101780297A CN 201019146021 A CN201019146021 A CN 201019146021A CN 201019146021 A CN201019146021 A CN 201019146021A CN 101780297 A CN101780297 A CN 101780297A
- Authority
- CN
- China
- Prior art keywords
- syringe
- support ring
- push rod
- collar
- elastic
- 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.)
- Pending
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5013—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe
- A61M5/502—Means for blocking the piston or the fluid passageway to prevent illegal refilling of a syringe for blocking the piston
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/50—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for preventing re-use, or for indicating if defective, used, tampered with or unsterile
- A61M5/5066—Means for preventing re-use by disconnection of piston and piston-rod
- A61M2005/5073—Means for preventing re-use by disconnection of piston and piston-rod by breaking or rupturing the connection parts
Landscapes
- Health & Medical Sciences (AREA)
- Vascular Medicine (AREA)
- Engineering & Computer Science (AREA)
- Anesthesiology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The invention relates to a quantitative self-destruct syringe which comprises a hollow needle cylinder, a push rod sliding in the needle cylinder and a rubber stopper mounted at the front end of the push rod, wherein a needle base is mounted at the front end of the needle cylinder, and the quantitative self-destruct syringe is characterized in that the needle base is provided with a support ring, an inner cavity for leading injection to pass through is arranged in the support ring, the support ring is in close fit with the conicity at the front end of the needle cylinder for keeping liquid sealing between the support ring and the needle cylinder, and the needle base is fixed with the front end of the needle cylinder by an elastic clamping and fixing structure. The adoption of the structure can clamp and fix the needle base with the needle cylinder by relying on a clamping pin on the support ring on the one hand, and lead the support ring to be in the close fit with the conicity of the needle cylinder on the other hand, thereby firmly fixing the needle base with the needle cylinder and keeping the liquid sealing between the two. A round table is arranged on the push rod, when a boss on the inner wall of the needle cylinder props against the round table of the push rod, the push rod can not be pulled back, thereby achieving the purpose of controlling the dose of pumped liquid.
Description
Technical field
The invention belongs to a kind of medical apparatus, specifically belong to a kind of self-destruction syringe of quantitative use.
Background technology
Cause cross infection in order not make existing disposable syringe be repeated to utilize, spread disease, have many self-destroyed syringes just to arise at the historic moment.Such as on push rod, being provided with damaged part, after finishing, injection firmly push rod is fractureed, destroy push rod, reach self-destruction, the needle stand of this class syringe adopts thread head or center head mostly, and its shortcoming is that residual quantity is big, and is fixing not firm between center head and the syringe, only rely on static friction between the two to realize connecting, in use might come off.
Summary of the invention
The technical problem to be solved in the present invention is: the quantitative self-destruct syringe that a kind of needle stand and syringe are easy for installation, fixed, the medicinal liquid residual quantity is little is provided.
In order to solve the problems of the technologies described above, the present invention by the following technical solutions:
A kind of quantitative self-destruct syringe, comprise the push rod that a hollow barrel, is slided and be installed in the plug of push rod front end in syringe, the front end of syringe is equipped with needle stand, it is characterized in that: described needle stand is provided with support ring, be provided with in the support ring and be used for the inner chamber that injection passes through, support ring and syringe front end tapering closely cooperate, and make between support ring and the syringe to keep liquid sealing, and described needle stand and syringe front end are fixed by the elasticity clamping structure.
The injection mo(u)lding of described syringe front end has in syringe overcoat and the syringe overlaps, in described support ring is placed in and overlaps in the syringe, the inwall that overlaps in the outer wall of support ring and the syringe matches and tapering closely cooperates, described elasticity clamping structure specifically comprises and needle stand injection moulding all-in-one-piece elastic card claw and the collar of being located on the syringe overcoat front inner wall, elastic card claw stretches into downwards in syringe overcoat and the syringe in the space between the cover, the card base in the outside, elastic card claw lower end matches with the collar that syringe puts outward, the outer wall that overlaps in inboard, elastic card claw lower end and the syringe offsets, and makes card base and collar card jail.
The injection mo(u)lding of described syringe front end has in syringe overcoat and the syringe overlaps, in described support ring is placed in and overlaps in the syringe, the inwall that overlaps in the outer wall of support ring and the syringe matches and tapering closely cooperates, described elasticity clamping structure specifically comprises and needle stand injection moulding all-in-one-piece elasticity card base and the collar of being located on the syringe overcoat front inner wall, elasticity card base along continuous straight runs stretches out, match with the collar that syringe puts outward in the outside of card base, the card base inboard makes card base and collar card jail by offseting with card base injection moulding all-in-one-piece needle stand.
Described support ring is placed in the syringe, the outer wall of support ring and the inwall of syringe matches and tapering closely cooperates, described elasticity clamping structure specifically comprises and needle stand injection moulding all-in-one-piece elastic card claw and the collar of being located on the syringe outer wall, elastic card claw extends downwards and wraps in the collar outside, and elastic card claw makes the card base and the collar card jail of elastic card claw lower end under self elastic force effect.
Form the elastic pawl of gathering to the center on the inwall that overlaps in the described syringe, form the frustum that injection finishes and can fasten with elastic pawl on the described push rod.
Described push rod is provided with round platform, and described syringe inwall is provided with the boss that can prop up round platform when a circle push rod is pulled back drawing liquid.
After adopting said structure: needle stand fixes by card base on the support ring and syringe on the one hand, and support ring and syringe tapering closely cooperate on the other hand, make that needle stand and syringe are fixed, make to keep liquid sealing between the two.Push rod is provided with round platform, and when the boss on the syringe inwall propped up the round platform of push rod, push rod can not past be pulled back, thereby reaches the purpose of control drawing liquid dosage.
Description of drawings
Fig. 1 is the structural representation of syringe shown in the embodiment one;
Fig. 2 is the structural representation of syringe shown in the embodiment one;
Fig. 3 is the cutaway view of needle stand shown in the embodiment one;
Fig. 4 is the side direction diagrammatic sketch of needle stand shown in the embodiment one;
Fig. 5 is the vertical view of needle stand shown in the embodiment one;
Fig. 6 is the partial enlarged drawing of Fig. 1;
Fig. 7 does not use preceding state cutaway view for the push rod of syringe shown in the embodiment two;
Fig. 8 is the cutaway view of the state of syringe drawing liquid shown in the embodiment two;
Fig. 9 is the finish cutaway view of state of injector to inject shown in the embodiment two;
Figure 10 is the finish cutaway view of state of syringe self-destruction shown in the embodiment two;
Figure 11 is the partial enlarged drawing of Fig. 7;
Figure 12 is the partial enlarged drawing of Fig. 8;
Figure 13 is the cutaway view of syringe shown in the embodiment three;
Figure 14 is the partial enlarged drawing of Figure 13.
The specific embodiment
Embodiment one
Referring to Fig. 1, a kind of quantitative self-destruct syringe, comprise the push rod 2 that a hollow barrel 1, is slided and be installed in the plug 3 of push rod 2 front ends in syringe 1, the front end of syringe 1 is equipped with needle stand 4, needle stand 4 is provided with support ring 5, is provided with in the support ring 5 to be used for the inner chamber 8 (referring to Fig. 3) that injection passes through, and support ring 5 closely cooperates with syringe front end tapering, make between support ring 5 and the syringe 1 to keep liquid sealing, needle stand 4 is fixed by the elasticity clamping structure with the syringe front end.
Referring to Fig. 2, Fig. 6, the injection mo(u)lding of syringe front end has in syringe overcoat 111 and the syringe overlaps 112, cover 112 is higher than syringe overcoat 111 in the syringe, support ring 5 is placed in and overlaps in 112 in the syringe, cover 112 inwall matches and tapering closely cooperates in the outer wall of support ring 5 and the syringe, the elasticity clamping structure specifically comprise with needle stand 4 injection moulding all-in-one-piece elastic card claws 41 (referring to Fig. 3, Fig. 4, Fig. 5) with the collar of being located on syringe overcoat 111 front inner wall 42 (referring to Fig. 2), elastic card claw 41 stretches into downwards in the space of overlapping in syringe overcoat 111 and the syringe between 112, the card base 43 in the outside, elastic card claw 41 lower ends matches with the collar 42 on the syringe overcoat 111, the projection 44 of inboard, elastic card claw 41 lower end offsets with the outer wall of the interior cover 112 of syringe, makes card base 43 and collar 42 card jails.Form the elastic pawl of gathering to the center 9 (referring to Fig. 6) on the inwall of cover 112 in the syringe, form the frustum 10 that injection finishes and can fasten with elastic pawl 9 on the push rod, this structure can make frustum 10 be easy to pass elastic pawl 9, be retained in the inner chamber 8 of needle stand, reached the irreplaceable purpose of few residual quantity and needle stand.
Embodiment two
Syringe shown in the present embodiment, the structure of syringe 1 and needle stand 4 is different with embodiment one.
Referring to Fig. 7, Figure 11, needle stand 4 is provided with support ring 5, the injection mo(u)lding of syringe front end has in syringe overcoat 111 and the syringe overlaps 112, syringe overcoat 111 is higher than and overlaps 112 in the syringe, support ring 5 is placed in and overlaps in 112 in the syringe, cover 112 inwall matches and tapering closely cooperates in the outer wall of support ring 5 and the syringe, the elasticity clamping structure specifically comprises and needle stand injection moulding all-in-one-piece elasticity card base 43 and the collar of being located on the syringe overcoat front inner wall 42, elasticity card base 43 along continuous straight runs stretch out, match with collar 42 on the syringe overcoat 111 in the outside of card base 43, card base 43 inboards are by offseting with card base injection moulding all-in-one-piece needle stand 4, make card base 43 and collar 42 card jails, reached the irreplaceable purpose of few residual quantity and needle stand.
Embodiment three
Syringe shown in the present embodiment, the structure of syringe 1 and needle stand 4 is different with embodiment one, two.
Referring to Figure 13, Figure 14, needle stand 4 is provided with support ring 5, support ring 5 is placed in the syringe 1, the inwall of the outer wall of support ring 5 and syringe 1 matches and tapering closely cooperates, the elasticity clamping structure specifically comprises and needle stand injection moulding all-in-one-piece elastic card claw 41 and the collar of being located on the syringe outer wall 42, elastic card claw 41 extends downwards and wraps in collar 42 outsides, elastic card claw 41 makes the card base 43 and collar 42 card jails of elastic card claw lower end under self elastic force effect, form the elastic pawl of gathering to the center 9 on the syringe inwall, form the frustum 10 that injection finishes and can fasten with elastic pawl 9 on the push rod, reached the irreplaceable purpose of few residual quantity and needle stand.
The present invention in use, at first, as shown in Figure 7, when syringe was not used, frustum 10 did not pass the elastic pawl 9 of needle stand.Subsequently as shown in Figure 8, this process is the drawing liquid process, the push rod 2 of pulling back during drawing liquid, when boss 12 propped up round platform 11, drawing liquid finished as shown in Figure 9, and this moment, injection finished, frustum 10 will pass described elastic pawl 9, elastic pawl 9 fastens with frustum 10, moves backward thereby hinder push rod 2, finishes the self-destruction first step.As shown in figure 10, this process is second step of self-destruction, firmly push rod 2 is broken, and makes the head of push rod 2, breaks and can't come out in syringe 1, prevents to change push rod 2 and plug 3 reuses, and reaches thorough self-destruction.
Claims (7)
1. quantitative self-destruct syringe, comprise the push rod (2) that a hollow barrel (1), is slided and be installed in the plug (3) of push rod (2) front end in syringe (1), the front end of syringe (1) is equipped with needle stand (4), it is characterized in that: described needle stand (4) is provided with support ring (5), be provided with the inner chamber (8) that is used for injection and passes through in the support ring (5), support ring (5) closely cooperates with syringe front end tapering, make between support ring (5) and the syringe (1) to keep liquid sealing, described needle stand (4) is fixed by the elasticity clamping structure with the syringe front end.
2. a kind of quantitative self-destruct syringe as claimed in claim 1, it is characterized in that: the injection mo(u)lding of described syringe front end has cover (112) in syringe overcoat (111) and the syringe, described support ring (5) is placed in and overlaps in (111) in the syringe, the inwall of cover (112) matches and tapering closely cooperates in the outer wall of support ring (5) and the syringe, described elasticity clamping structure specifically comprises with needle stand (4) injection moulding all-in-one-piece elastic card claw (41) and is located at collar (42) on the syringe overcoat front inner wall, elastic card claw (41) stretches into downwards in the space of overlapping in syringe overcoat (111) and the syringe between (112), the card base (43) in the outside, elastic card claw (41) lower end matches with the collar (42) that syringe puts outward, the outer wall of cover (112) offsets in inboard, elastic card claw lower end and the syringe, makes card base (43) firm with collar (42) card.
3. a kind of quantitative self-destruct syringe as claimed in claim 1, it is characterized in that: the injection mo(u)lding of described syringe front end has cover (112) in syringe overcoat (111) and the syringe, described support ring (5) is placed in and overlaps in (112) in the syringe, the inwall of cover (112) matches and tapering closely cooperates in the outer wall of support ring (5) and the syringe, described elasticity clamping structure specifically comprises with needle stand injection moulding all-in-one-piece elasticity card base (43) and is located at collar (42) on the syringe overcoat front inner wall, elasticity card base (43) along continuous straight runs stretches out, match with the collar (42) that syringe puts outward in the outside of card base (43), the card base inboard makes card base (43) and collar (42) card jail by offseting with card base injection moulding all-in-one-piece needle stand (4).
4. a kind of quantitative self-destruct syringe as claimed in claim 1, it is characterized in that: described support ring (5) is placed in the syringe (1), the inwall of the outer wall of support ring (5) and syringe (1) matches and tapering closely cooperates, described elasticity clamping structure specifically comprises with needle stand injection moulding all-in-one-piece elastic card claw (41) and is located at collar (42) on the syringe outer wall, elastic card claw (41) extends downwards and wraps in collar (42) outside, and elastic card claw (41) makes the card base (43) and collar (42) card jail of elastic card claw lower end under self elastic force effect.
5. as claim 2 or 3 described a kind of quantitative self-destruct syringes, it is characterized in that: form the elastic pawl of gathering to the center (9) on the inwall of cover (112) in the described syringe, form the frustum (10) that injection finishes and can fasten with elastic pawl (9) on the described push rod.
6. a kind of quantitative self-destruct syringe as claimed in claim 4 is characterized in that: form the elastic pawl of gathering to the center (9) on the described syringe inwall, form the frustum (10) that injection finishes and can fasten with elastic pawl (9) on the described push rod.
7. as claim 1 or 2 or 3 or 4 described a kind of quantitative self-destruct syringes, it is characterized in that: described push rod (2) is provided with round platform (11), and described syringe inwall is provided with the boss (12) that can prop up round platform (11) when a circle push rod is pulled back drawing liquid.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201019146021A CN101780297A (en) | 2010-02-04 | 2010-02-04 | Quantitative self-destruct syringe |
| PCT/CN2010/073300 WO2011094977A1 (en) | 2010-02-04 | 2010-05-27 | Dosing self-destruction syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201019146021A CN101780297A (en) | 2010-02-04 | 2010-02-04 | Quantitative self-destruct syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101780297A true CN101780297A (en) | 2010-07-21 |
Family
ID=42520521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201019146021A Pending CN101780297A (en) | 2010-02-04 | 2010-02-04 | Quantitative self-destruct syringe |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101780297A (en) |
| WO (1) | WO2011094977A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112807523A (en) * | 2019-11-18 | 2021-05-18 | 苏宣维 | Self-destruction pull-shrink safety needle |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104220120A (en) * | 2012-03-23 | 2014-12-17 | 沃尔夫托瑞医药公司 | Auto-disable syringe assembly |
| CN109605939B (en) * | 2018-10-09 | 2020-06-12 | 南京溧水高新创业投资管理有限公司 | Ink quantitative filling device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2571393Y (en) * | 2002-09-25 | 2003-09-10 | 名高生化科技股份有限公司 | Needle locking device |
| CN2722937Y (en) * | 2004-08-25 | 2005-09-07 | 杭州龙德医用器械有限公司 | Disposable aseptic insuline injector |
| CN1915448A (en) * | 2006-08-07 | 2007-02-21 | 林作钱 | Improved self-destruction type injector |
| CN2885293Y (en) * | 2006-04-14 | 2007-04-04 | 美迪科（上海）包装材料有限公司 | Self-destruction type syringe |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001187142A (en) * | 2000-01-05 | 2001-07-10 | Jms Co Ltd | Safe injector |
| TWI242456B (en) * | 2001-02-06 | 2005-11-01 | Jms Co Ltd | Syringe for medical use |
| US20030040720A1 (en) * | 2001-08-22 | 2003-02-27 | Steube Gregory Alan | Needle hub assembly |
| JP2003205035A (en) * | 2001-11-12 | 2003-07-22 | Jms Co Ltd | Injection needle retractable injector |
| WO2005023344A1 (en) * | 2003-09-05 | 2005-03-17 | Medical Patents Ltd. | Injection syringe with retractable needle |
-
2010
- 2010-02-04 CN CN201019146021A patent/CN101780297A/en active Pending
- 2010-05-27 WO PCT/CN2010/073300 patent/WO2011094977A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2571393Y (en) * | 2002-09-25 | 2003-09-10 | 名高生化科技股份有限公司 | Needle locking device |
| CN2722937Y (en) * | 2004-08-25 | 2005-09-07 | 杭州龙德医用器械有限公司 | Disposable aseptic insuline injector |
| CN2885293Y (en) * | 2006-04-14 | 2007-04-04 | 美迪科（上海）包装材料有限公司 | Self-destruction type syringe |
| CN1915448A (en) * | 2006-08-07 | 2007-02-21 | 林作钱 | Improved self-destruction type injector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112807523A (en) * | 2019-11-18 | 2021-05-18 | 苏宣维 | Self-destruction pull-shrink safety needle |
| CN112807523B (en) * | 2019-11-18 | 2023-05-23 | 苏宣维 | Self-destroying pull-shrinking safety needle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011094977A1 (en) | 2011-08-11 |
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| PB01 | Publication | ||
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Application publication date: 20100721 |