CN102871671B - Disposable self-retracting safety blood taking needle - Google Patents
Disposable self-retracting safety blood taking needle Download PDFInfo
- Publication number
- CN102871671B CN102871671B CN201210362821.0A CN201210362821A CN102871671B CN 102871671 B CN102871671 B CN 102871671B CN 201210362821 A CN201210362821 A CN 201210362821A CN 102871671 B CN102871671 B CN 102871671B
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- sliding sleeve
- needle
- spring
- needle body
- blood taking
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Abstract
The invention discloses a disposable self-retracting safety blood taking needle. The blood taking needle comprises a shell (1), a needle body (2), a sliding sleeve (3), a rear cover (4), an ejecting spring (5) and a retracting spring (6), wherein the sliding sleeve (3) is arranged in the shell (1), the needle body (2) with a needle (13) is arranged in the sliding sleeve (3) through the retracting spring (6), the rear cover (4) is arranged on the sliding sleeve (3) through the ejecting spring (5), and thus the whole blood taking needle is formed. The blood taking needle is simple in structure and very easy to operate; when the blood taking needle is used, only the sliding sleeve is aligned with a blood taking part and pushed lightly, the needle body automatically rotates under the mutual action of inclined planes and the action of the ejecting spring, and the needle is ejected; and after the needle is ejected primarily, the needle body cannot reenter a guide rail of the shell, and the needle is ejected secondarily, so that disposable use of the blood taking needle is ensured, a patient does not directly see the needle, a sense of fear is avoided, and the using safety is improved.
Description
Technical field
The present invention relates to disposable blood taking needle, be specifically related to disposable from retracting type safe blood-taking needle.
Background technology
At present, medical institutions are general direct with blood taking needle blood sampling in the time that routine is taken a blood sample, though this method energy one people's one pin, not by cross infection, patient directly sees syringe needle, produces the feared state of mind (particularly child).When another kind of blood sampling, get blood taking needle and be used in conjunction with by blood collecting pen, blood taking needle is loaded in blood collecting pen, after transmitting acupuncture, take off blood taking needle, load onto another blood taking needle and reuse, because blood collecting pen is to reuse many times, as easy as rolling off a logly cause cross infection.Above two kinds of blood-sampling methods, medical and nursing work personnel directly contact blood taking needle, in the time of blood sampling, manually syringe needle dress are got, and are easy to because of carelessness stab, and cause cross infection, have certain potential safety hazard.
Summary of the invention
The object of the invention is to: provide a kind of disposable from retracting type safe blood-taking needle, this blood taking needle is simple in structure, easy to use, safe and reliable, particularly can blood sampling after needle automatic retracting in housing, do not cause cross infection because needle point exposes, after needle body transmitting retraction, can not again launch use in addition, accomplish disposable blood sampling truly.
Technical solution of the present invention is: this blood taking needle comprises housing, needle body, sliding sleeve, bonnet, transmitting spring and retraction spring, sliding sleeve is arranged in housing, needle body with syringe needle is through transmitting spring fitting in sliding sleeve, and bonnet is through transmitting spring fitting on sliding sleeve, and entirety forms blood taking needle; The inwall of described housing vertically both sides respectively arranges two parallel raised line shape long guideways and short lead rail, and shell end is established step cutting pattern; The outer wall both sides of described sliding sleeve are provided with gathering sill, the left end of gathering sill arranges the first inclined-plane, sliding sleeve right-hand member is the retraction spring chamber of hollow cylinder, retraction spring intracavity is installed retraction spring, retraction spring, between needle body front end and retraction spring chamber, is established limited step on sliding sleeve excircle, and sliding sleeve is arranged in housing and is located by limited step, gathering sill matches with long guideway, and sliding sleeve is in axial sliding; The outer wall both sides of described needle body arrange the projection that is limited in sliding sleeve, establish the second inclined-plane matching with the first inclined-plane of sliding sleeve on projection, and needle body is arranged in sliding sleeve, under the interaction on the first inclined-plane and the second inclined-plane, makes to turn clockwise between needle body and sliding sleeve; Described bonnet is established transmitting spring cavity, and transmitting spring is installed in transmitting spring cavity, and bonnet is arranged on sliding sleeve, and transmitting spring is between needle rear end and bonnet.
Wherein, on housing, be positioned at needle end protective cap is installed.
When blood sampling, take off protective cap, the opening part of the sliding sleeve of blood taking needle is aimed to blood sampling site, press bonnet, allow slide in housing and slide, when the first inclined-plane of sliding sleeve and the hanging of housing short lead rail, under the restoring force effect of transmitting spring, the first corresponding rotation in inclined-plane of the second inclined-plane of needle body and sliding sleeve, and the short lead rail top that makes the second inclined-plane rotation of needle body cross housing promotes needle body forward, and syringe needle is released outside sliding sleeve; When transmitting is after spring ejects syringe needle outside sliding sleeve end face, transmitting spring extend and retraction spring under the state of compression, needle body makes needle body retraction under the effect of the elastic-restoring force of retraction spring, at transmitting execution relief needle body return within sliding sleeve.
The invention has the advantages that: 1, simple in structure, operation is very easy to, when use, only sliding sleeve need to be aimed to blood sampling site and promote gently, under the interaction on inclined-plane and the effect of transmitting spring, make needle body carry out automatic rotation, and syringe needle is penetrated; 2, after primary emission is complete, the projection of needle body and the second inclined-plane depart from the first inclined-plane and the housing guide rail of sliding sleeve completely, and needle body cannot reenter housing guide rail and carry out Secondary Emission, thereby ensure the disposable use of blood taking needle; 3, in use, patient can directly not see syringe needle to blood taking needle, avoids fear; 4, after blood taking needle transmitting, syringe needle energy automatic retracted, in sliding sleeve, outside not being exposed on, has improved the safety using.
Brief description of the drawings
Fig. 1 is Standard schematic diagram of the present invention.
Fig. 2 is housing front view of the present invention.
Fig. 3 is needle body front view of the present invention.
Fig. 4 is sliding sleeve front view of the present invention.
Fig. 5 is bonnet front view of the present invention.
Fig. 6 is protective cap front view of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Fig. 1-Fig. 6, this blood taking needle comprises housing 1, needle body 2, sliding sleeve 3, bonnet 4, transmitting spring 5 and retraction spring 6, sliding sleeve 3 is arranged in housing 1, needle body 2 with syringe needle 13 is in retraction spring 6 is arranged on sliding sleeve 3, bonnet 4 is arranged on sliding sleeve 3 through transmitting spring 5, and entirety forms blood taking needle; The inwall of described housing 1 vertically both sides respectively arranges two parallel raised line shape long guideways 10 and short lead rail 11, and step cutting pattern 16 is established in housing 1 end; The outer wall both sides of described sliding sleeve 3 are provided with gathering sill 12, the left end of gathering sill 12 arranges the first inclined-plane 8, the retraction spring chamber 17 that sliding sleeve 3 right-hand members are hollow cylinder, the interior installation retraction spring 6 in retraction spring chamber 17, retraction spring 6, between needle body 2 front ends and retraction spring chamber 17, is established limited step 18 on sliding sleeve 3 excircles, and sliding sleeve 3 is arranged in housing 1 and is located by limited step 18, gathering sill 12 matches with long guideway 10, and sliding sleeve 3 is in axial sliding; The outer wall both sides of described needle body 2 arrange the projection 15 that is limited in sliding sleeve 3, on projection 15, establish the second inclined-plane 9 matching with the first inclined-plane 8 of sliding sleeve 3, needle body 2 is arranged in sliding sleeve 3, makes to turn clockwise between needle body 2 and sliding sleeve 3 under the interaction on the first inclined-plane 8 and the second inclined-plane 9; Described bonnet 4 is established transmitting spring cavity 14, the interior installation transmitting of transmitting spring cavity 14 spring 5, and bonnet 4 is arranged on sliding sleeve 3, and transmitting spring 5 is between needle body 2 rear ends and bonnet 4.
Wherein, on housing 1, be positioned at needle end protective cap 7 is installed.
When blood sampling, take off protective cap 7, the opening part of the sliding sleeve of blood taking needle 3 is aimed to blood sampling site, press bonnet 4, allow sliding sleeve 3 in the interior slip of housing 1, when the first inclined-plane 8 of sliding sleeve 3 and the hanging of the short lead rail 11 of housing 1, under the restoring force effect of transmitting spring 5, the first corresponding rotation in inclined-plane 8 of the second inclined-plane 9 of needle body 2 and sliding sleeve 3, and short lead rail 11 tops that make the second inclined-plane 9 rotations of needle body 2 cross housing 1 promote needle body 2 forward, and syringe needle 13 is released outside sliding sleeve 3; After transmitting spring 5 ejects syringe needle 13 outside sliding sleeve 3 end faces, transmitting spring 5 elastic elongations and retraction spring 6 are under the state of compression, needle body 2 makes needle body 2 bounce back under the effect of the elastic-restoring force of retraction spring 6, is launching execution relief needle body 2 returns within sliding sleeve 3.
Claims (2)
1. disposable from retracting type safe blood-taking needle, it is characterized in that: this blood taking needle comprises housing (1), needle body (2), sliding sleeve (3), bonnet (4), transmitting spring (5) and retraction spring (6), sliding sleeve (3) is arranged in housing (1), the needle body (2) of band syringe needle (13) is in retraction spring (6) is arranged on sliding sleeve (3), it is upper that bonnet (4) is arranged on sliding sleeve (3) through transmitting spring (5), and entirety forms blood taking needle, the inwall of described housing (1) vertically both sides respectively arranges two parallel raised line shape long guideways (10) and short lead rail (11), and step cutting pattern (16) is established in housing (1) end, the outer wall both sides of described sliding sleeve (3) are provided with gathering sill (12), the left end of gathering sill (12) arranges the first inclined-plane (8), the retraction spring chamber (17) that sliding sleeve (3) right-hand member is hollow cylinder, retraction spring (6) is installed in retraction spring chamber (17), retraction spring (6) is positioned between needle body (2) front end and retraction spring chamber (17), on sliding sleeve (3) excircle, establish limited step (18), sliding sleeve (3) is arranged in housing (1) and is located by limited step (18), gathering sill (12) matches with long guideway (10), sliding sleeve (3) is in axial sliding, the outer wall both sides of described needle body (2) arrange the projection (15) that is limited in sliding sleeve (3), on projection (15), establish the second inclined-plane (9) matching with first inclined-plane (8) of sliding sleeve (3), needle body (2) is arranged in sliding sleeve (3), makes to turn clockwise between needle body (2) and sliding sleeve (3) under the interaction of the first inclined-plane (8) and the second inclined-plane (9), described bonnet (4) is established transmitting spring cavity (14), and transmitting spring (5) is installed in transmitting spring cavity (14), and it is upper that bonnet (4) is arranged on sliding sleeve (3), and transmitting spring (5) is positioned between needle body (2) rear end and bonnet (4).
2. according to claim 1 disposable from retracting type safe blood-taking needle, it is characterized in that: wherein, on housing (1), be positioned at needle end protective cap (7) is installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210362821.0A CN102871671B (en) | 2012-09-26 | 2012-09-26 | Disposable self-retracting safety blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210362821.0A CN102871671B (en) | 2012-09-26 | 2012-09-26 | Disposable self-retracting safety blood taking needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102871671A CN102871671A (en) | 2013-01-16 |
| CN102871671B true CN102871671B (en) | 2014-06-11 |
Family
ID=47473365
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210362821.0A Expired - Fee Related CN102871671B (en) | 2012-09-26 | 2012-09-26 | Disposable self-retracting safety blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102871671B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205338963U (en) * | 2015-01-20 | 2016-06-29 | 胡绍勤 | Safe blood -taking -needle structure |
| CN106491142B (en) * | 2016-12-15 | 2023-06-16 | 韩新巍 | Retractable blood sampling device |
| CN106859670A (en) * | 2017-04-07 | 2017-06-20 | 王振民 | The anti-frightened anti-pollution safe strength blood taking needle of hypodynia sense brace type |
| WO2019119382A1 (en) * | 2017-12-21 | 2019-06-27 | 符仲华 | Needle feeder and application thereof |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4449529A (en) * | 1981-11-18 | 1984-05-22 | Becton Dickinson And Company | Automatic retractable lancet assembly |
| US5350392A (en) * | 1994-02-03 | 1994-09-27 | Miles Inc. | Lancing device with automatic cocking |
| US5964718A (en) * | 1997-11-21 | 1999-10-12 | Mercury Diagnostics, Inc. | Body fluid sampling device |
| US6197040B1 (en) * | 1999-02-23 | 2001-03-06 | Lifescan, Inc. | Lancing device having a releasable connector |
| AU2003284870A1 (en) * | 2002-10-29 | 2004-05-25 | Palco Labs, Inc. | Single-use lancet device |
| CN1460449A (en) * | 2003-06-18 | 2003-12-10 | 清华大学 | Automatic quantitative blood-taking pen |
| US20060100655A1 (en) * | 2004-10-28 | 2006-05-11 | Koon-Wah Leong | Combined lancing and auxiliary device |
| CN202821371U (en) * | 2012-09-26 | 2013-03-27 | 淮安市天达医疗器械有限公司 | Disposable self-retraction type safe blood taking needle |
-
2012
- 2012-09-26 CN CN201210362821.0A patent/CN102871671B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN102871671A (en) | 2013-01-16 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140611 Termination date: 20150926 |
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| EXPY | Termination of patent right or utility model |