CN202821371U - Disposable self-retraction type safe blood taking needle - Google Patents
Disposable self-retraction type safe blood taking needle Download PDFInfo
- Publication number
- CN202821371U CN202821371U CN 201220495094 CN201220495094U CN202821371U CN 202821371 U CN202821371 U CN 202821371U CN 201220495094 CN201220495094 CN 201220495094 CN 201220495094 U CN201220495094 U CN 201220495094U CN 202821371 U CN202821371 U CN 202821371U
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- CN
- China
- Prior art keywords
- sliding sleeve
- needle
- spring
- emission
- needle body
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- Withdrawn - After Issue
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Abstract
The utility model discloses a disposable self-retraction type safe blood taking needle which comprises a shell body (1), a needle body (2), a sliding sleeve (3), a rear cover (4), an emission spring (5) and a retraction spring (6). The sliding sleeve (3) is installed in the shell body (1), the needle body (2) with a needle head (13) is arranged in the sliding sleeve (3) through the retraction spring (6), the rear cover (4) is arranged on the sliding sleeve (3) through the emission spring (5), and the blood taking needle is wholly formed. The disposable self-retraction type safe blood taking needle is simple in structure, and quite easy to operate, when in use, people just need to take the sliding sleeve to align with a blood taking portion and then slightly push the blood taking needle, under the mutual effect of slopes and the effect of the emission spring, and the needle body achieves automatic rotating and enables the needle head to be emitted out. After once emission is completed, the needle body can not again enter into a guide rail of the shell body to conduct twice emission, so that disposable use of the blood taking needle is guaranteed. A patient can not directly see the needle head, fear sensing is avoided, and safety of use is improved.
Description
Technical field
This utility model relates to disposable blood taking needle, is 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 in conjunction with 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.Above two kinds of blood-sampling methods, the medical and nursing work personnel directly contact blood taking needle, manually the syringe needle dress are got when blood sampling, are easy to because of carelessness stab, and cause cross infection, have certain potential safety hazard.
Summary of the invention
The purpose of this utility model is: 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 utility model 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 utility model has the advantage of: 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 this utility model Standard schematic diagram.
Fig. 2 is this utility model housing front view.
Fig. 3 is this utility model needle body front view.
Fig. 4 is this utility model sliding sleeve front view.
Fig. 5 is this utility model bonnet front view.
Fig. 6 is this utility model protective cap front view.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is described in further detail.
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 |
|---|---|---|---|
| CN 201220495094 CN202821371U (en) | 2012-09-26 | 2012-09-26 | Disposable self-retraction type safe blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220495094 CN202821371U (en) | 2012-09-26 | 2012-09-26 | Disposable self-retraction type safe blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202821371U true CN202821371U (en) | 2013-03-27 |
Family
ID=47933191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220495094 Withdrawn - After Issue CN202821371U (en) | 2012-09-26 | 2012-09-26 | Disposable self-retraction type safe blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202821371U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871671A (en) * | 2012-09-26 | 2013-01-16 | 淮安市天达医疗器械有限公司 | Disposable self-retracting safety blood taking needle |
| CN103190921A (en) * | 2013-04-22 | 2013-07-10 | 威海洁瑞医用制品有限公司 | Disposable safe blood taking needle |
| PL424545A1 (en) * | 2018-02-08 | 2019-08-12 | Htl-Strefa Spółka Akcyjna | Safe needle device |
-
2012
- 2012-09-26 CN CN 201220495094 patent/CN202821371U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102871671A (en) * | 2012-09-26 | 2013-01-16 | 淮安市天达医疗器械有限公司 | Disposable self-retracting safety blood taking needle |
| CN103190921A (en) * | 2013-04-22 | 2013-07-10 | 威海洁瑞医用制品有限公司 | Disposable safe blood taking needle |
| CN103190921B (en) * | 2013-04-22 | 2014-07-16 | 威海洁瑞医用制品有限公司 | Disposable safe blood taking needle |
| PL424545A1 (en) * | 2018-02-08 | 2019-08-12 | Htl-Strefa Spółka Akcyjna | Safe needle device |
| CN111801128A (en) * | 2018-02-08 | 2020-10-20 | Htl斯特雷法公司 | Safety needle device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20140611 |
|
| RGAV | Abandon patent right to avoid regrant |