CN102871671A - Disposable self-retracting safety blood taking needle - Google Patents
Disposable self-retracting safety blood taking needle Download PDFInfo
- Publication number
- CN102871671A CN102871671A CN2012103628210A CN201210362821A CN102871671A CN 102871671 A CN102871671 A CN 102871671A CN 2012103628210 A CN2012103628210 A CN 2012103628210A CN 201210362821 A CN201210362821 A CN 201210362821A CN 102871671 A CN102871671 A CN 102871671A
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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 the retracting type safe blood-taking needle.
Background technology
At present, medical institutions are general direct with the blood taking needle blood sampling when routine is taken a blood sample, though this method energy one people one pin, not by cross infection, the patient directly sees syringe needle, produces the feared state of mind (particularly child).During another kind of blood sampling, get blood taking needle and be used by blood collecting pen, blood taking needle is loaded in the blood collecting pen, take off blood taking needle after the emission acupuncture, 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.More than two kinds of blood-sampling methods, the medical and nursing work personnel directly contact blood taking needle, manually the syringe needle dress are got in when blood sampling, 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 the retracting type safe blood-taking needle, this blood taking needle is simple in structure, easy to use, safe and reliable, particularly can be at the complete rear needle automatic retracting of blood sampling in housing, do not cause cross infection because needle point exposes, can not again launch use behind the needle body emission retraction 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, emission spring and retraction spring, sliding sleeve is installed in the housing, with the needle body of syringe needle through the emission spring fitting in sliding sleeve, bonnet on sliding sleeve, whole consists of blood taking needle through the emission spring fitting; 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, the sliding sleeve right-hand member is the retraction spring chamber of hollow cylinder, the retraction spring intracavity is installed retraction spring, retraction spring is between needle body front end and retraction spring chamber, and a step of limiting on the sliding sleeve excircle, sliding sleeve are installed in the housing and are 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 that matches with the first inclined-plane of sliding sleeve on the projection, and needle body is installed in the sliding sleeve, makes between needle body and the sliding sleeve to turn clockwise under the interaction on the first inclined-plane and the second inclined-plane; Described bonnet is established the emission spring cavity, and the emission spring is installed in the emission spring cavity, and bonnet is installed on the sliding sleeve, and the emission spring is between needle rear end and bonnet.
Wherein, be positioned at needle end at housing protective cap is installed.
During blood sampling, take off protective cap, the opening part of the sliding sleeve of blood taking needle is aimed at blood sampling site, press bonnet, allow slide in the 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 emission spring, the corresponding rotation in the first 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 the sliding sleeve; When emission after spring ejects syringe needle outside the sliding sleeve end face, the elongation of emission spring and retraction spring are under the state of compression, and needle body makes the needle body retraction under the effect of the elastic-restoring force of retraction spring, at emission execution relief needle body return within sliding sleeve.
The invention has the advantages that: 1, simple in structure, operation is very easy to, and only sliding sleeve need to be aimed at blood sampling site during use and promote gently, makes needle body carry out automatic rotation under the effect of the interaction on inclined-plane and emission spring, and syringe needle is penetrated; 2, after primary emission is complete, the projection of needle body and the second inclined-plane break away from the first inclined-plane and the housing guide rail of sliding sleeve fully, and needle body can't reenter the housing guide rail and carry out Secondary Emission, thereby guarantee the disposable use of blood taking needle; 3, blood taking needle in use, the patient can directly not see syringe needle, avoids fear; 4, syringe needle energy automatic retracted outside not being exposed on, has improved the safety of using after the blood taking needle emission in sliding sleeve.
Description of drawings
Fig. 1 is Standard sketch map 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.
The specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
Such as Fig. 1-shown in Figure 6, this blood taking needle comprises housing 1, needle body 2, sliding sleeve 3, bonnet 4, emission spring 5 and retraction spring 6, sliding sleeve 3 is installed in the housing 1, with the needle body 2 of syringe needle 13 in retraction spring 6 is installed in sliding sleeve 3, bonnet 4 is installed on the sliding sleeve 3 through emission spring 5, whole formation 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, sliding sleeve 3 right-hand members are the retraction spring chamber 17 of hollow cylinder, retraction spring chamber 17 interior installation retraction springs 6, retraction spring 6 is between needle body 2 front ends and retraction spring chamber 17, and the step 18 of limiting on sliding sleeve 3 excircles, sliding sleeve 3 are installed in the housing 1 by limited step 18 location, 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, establish the second inclined-plane 9 that matches with the first inclined-plane 8 of sliding sleeve 3 on the projection 15, needle body 2 is installed in the sliding sleeve 3, turns clockwise making between needle body 2 and the sliding sleeve 3 under the interaction on the first inclined-plane 8 and the second inclined-plane 9; Described bonnet 4 is established emission spring cavity 14, emission spring cavity 14 interior installation emission springs 5, and bonnet 4 is installed on the sliding sleeve 3, and emission spring 5 is between needle body 2 rear ends and bonnet 4.
Wherein, be positioned at needle end at housing 1 protective cap 7 is installed.
During blood sampling, take off protective cap 7, the opening part of the sliding sleeve 3 of blood taking needle is aimed at blood sampling site, press bonnet 4, allow sliding sleeve 3 in housing 1 interior slip, 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 emission spring 5, the first inclined-plane 8 corresponding rotations 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, make outside the syringe needle 13 release sliding sleeves 3; After emission spring 5 ejects syringe needle 13 outside sliding sleeve 3 end faces, emission spring 5 elastic elongations and retraction spring 6 are under the state of compression, needle body 2 makes needle body 2 retractions under the effect of the elastic-restoring force of retraction spring 6, launching execution relief needle body 2 returns within sliding sleeve 3.
Claims (2)
1. disposable from the 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), emission spring (5) and retraction spring (6), sliding sleeve (3) is installed in the housing (1), the needle body (2) of band syringe needle (13) is in retraction spring (6) is installed in sliding sleeve (3), bonnet (4) is installed on the sliding sleeve (3) through emission spring (5), whole formation 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), sliding sleeve (3) right-hand member is the retraction spring chamber (17) of hollow cylinder, retraction spring (6) is installed in the retraction spring chamber (17), retraction spring (6) is positioned between needle body (2) front end and retraction spring chamber (17), the step (18) of limiting on sliding sleeve (3) excircle, sliding sleeve (3) is installed in the 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), establish the second inclined-plane (9) that matches with first inclined-plane (8) of sliding sleeve (3) on the projection (15), needle body (2) is installed in the sliding sleeve (3), turns clockwise making between needle body (2) and the sliding sleeve (3) under the interaction of the first inclined-plane (8) and the second inclined-plane (9); Described bonnet (4) is established emission spring cavity (14), and emission spring (5) is installed in the emission spring cavity (14), and bonnet (4) is installed on the sliding sleeve (3), and emission spring (5) is positioned between needle body (2) rear end and the bonnet (4).
2. according to claim 1 disposable from the retracting type safe blood-taking needle, it is characterized in that: wherein, be positioned at needle end at housing (1) 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 true CN102871671A (en) | 2013-01-16 |
| CN102871671B CN102871671B (en) | 2014-06-11 |
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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) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016116015A1 (en) * | 2015-01-20 | 2016-07-28 | 胡绍勤 | Safe blood lancet structure |
| CN106491142A (en) * | 2016-12-15 | 2017-03-15 | 韩新巍 | A kind of retracting type blood-taking 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 |
Citations (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 |
| JP3118218B2 (en) * | 1997-11-21 | 2000-12-18 | マーキュリー ダイアグノスティックス インコーポレイテッド | Body fluid sampling device |
| US6197040B1 (en) * | 1999-02-23 | 2001-03-06 | Lifescan, Inc. | Lancing device having a releasable connector |
| CN1460449A (en) * | 2003-06-18 | 2003-12-10 | 清华大学 | Automatic quantitative blood-taking pen |
| US20040092997A1 (en) * | 2002-10-29 | 2004-05-13 | Levin Paul D. | Single-use lancet device |
| EP1652474A2 (en) * | 2004-10-28 | 2006-05-03 | Lifescan, Inc. | 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
Patent Citations (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 |
| JP3118218B2 (en) * | 1997-11-21 | 2000-12-18 | マーキュリー ダイアグノスティックス インコーポレイテッド | Body fluid sampling device |
| US6197040B1 (en) * | 1999-02-23 | 2001-03-06 | Lifescan, Inc. | Lancing device having a releasable connector |
| US20040092997A1 (en) * | 2002-10-29 | 2004-05-13 | Levin Paul D. | Single-use lancet device |
| CN1460449A (en) * | 2003-06-18 | 2003-12-10 | 清华大学 | Automatic quantitative blood-taking pen |
| EP1652474A2 (en) * | 2004-10-28 | 2006-05-03 | Lifescan, Inc. | 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016116015A1 (en) * | 2015-01-20 | 2016-07-28 | 胡绍勤 | Safe blood lancet structure |
| CN105640572B (en) * | 2015-01-20 | 2018-08-31 | 广州市酷跑计算机科技有限公司 | A kind of safety type blood collecting needle construction |
| CN106491142A (en) * | 2016-12-15 | 2017-03-15 | 韩新巍 | A kind of retracting type blood-taking device |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102871671B (en) | 2014-06-11 |
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Granted publication date: 20140611 Termination date: 20150926 |
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