CN103976747A - Safety blood taking needle - Google Patents
Safety blood taking needle Download PDFInfo
- Publication number
- CN103976747A CN103976747A CN201410143344.8A CN201410143344A CN103976747A CN 103976747 A CN103976747 A CN 103976747A CN 201410143344 A CN201410143344 A CN 201410143344A CN 103976747 A CN103976747 A CN 103976747A
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- Prior art keywords
- needle
- saddle
- syringe needle
- stand
- needle stand
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Abstract
The invention discloses a safety blood taking needle. The safety blood taking needle comprises a needle seat, a needle sleeve, a straight needle and a needle head, wherein the needle sleeve is sleeved on the needle head, the straight needle is used for inserting a vacuum pipe, and the safety blood taking needle also comprises a protection cover, a slide piece and a limiting mechanism, the needle seat is in a cylindrical shape, one end of the needle seat is fixedly communicated with the needle head, and the other end is fixedly communicated with the straight needle; the slide piece is in a cylindrical shape with two opened ends and movably sleeved on the needle seat, and the length of the slide piece in the movement direction is greater than that of the needle head; the axial length of the needle seat is greater than the length of the needle head; the limiting mechanism is arranged on the slide piece and the needle seat; the inner diameter of the protection cover is greater than the outer diameter of the vacuum pipe, and the protection cover is arranged outside the straight needle and fixedly connected with the needle seat. The slide piece slides on the needle seat so as to shield the needle head, so that the safety for processing the needle head after taking the blood can be greatly improved; by avoiding the application of a spring-type needle head, the pain of a patient can be alleviated, and the safety is further improved by virtue of the protection cover.
Description
Technical field
The present invention relates to a kind of safe blood-taking needle.
Background technology
Blood sampling assay technique is quite ripe at present, but also do not reach not the object of reaching a conclusion from blood sampling in patient, or to be completed by blood taking needle and blood taking tube the initial procedure of chemical examination, so blood taking needle is one of medical device product of current global sales maximum.Yet, it is worth noting, blood collection needles human injury's accident that at present countries in the world hospital causes because of syringe needle fracture or medical personnel's misoperation is annual occurs millions of person-times.The statistical data that American Medical Association announces shows, only the U.S. approximately occurs that 1,000,000 person-times of medical personnel are unexpected is stabbed accident by blood taking needle, the hepatitis B virus, hepatitis C virus and the AIDS viral infection that wherein have at least over thousands of people on syringe needle, to be adhered to every year.The emergency treatment expense that the medical personnel that at every turn stabbed because of blood collection needles fracture and patient produce is 3000 dollars per capita.
Company drops into the research and development of safety blood taking medical device in succession energetically both at home and abroad, and safe blood-taking needle is in the market very many, and these safety blood taking equipment have a lot of deficiencies: first production cost is very high; It two is complex manufacturing; It three is that the quality of production is difficult to guarantee; It four is medical personnel's complex operations; It five is that security function is difficult to guarantee.
At present, conventional non-once blood taking needle, need to be to needle guard on pinhead sleeve with protection syringe needle after use, such as preventing that syringe needle is bent or collision etc.But so produced again new safety problem, medical worker is when putting syringe needle by needle guard, and because syringe needle is very thin, the diameter of needle guard is also little, easily stabs finger, causes the serious consequences such as medical staff infection.
For this defect, some blood taking needles have adopted the technological means of retractable needle, after blood sampling completes, utilize the isostructural elastic force of spring, and syringe needle is retracted in structures such as protective sleeve for the protection of syringe needle.So, although can effectively protect syringe needle, avoid medical worker to be wounded by stabbing, but can cause because of the mechanical action of needle retractable patient painful greatly.
On the other hand, blood taking needle for inserting the staight needle of vacuum tube, after opening needle guard, often also in naked state, processing safety is reduced.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome the defect that prior art safety is lower, easily aggravate patient suffering, the blood taking needle that a kind of safety is higher, patient suffering is less to be provided.
The present invention solves above-mentioned technical problem by following technical proposals:
A kind of safe blood-taking needle, it includes a needle stand, a needle guard, a staight needle and a syringe needle, described needle guard is sheathed on described syringe needle, described staight needle is used for inserting a vacuum tube, its feature is, described safe blood-taking needle also includes a protective cover, a saddle and a position-limit mechanism, and described needle stand is tubular, one end of described needle stand is fixed and is communicated with described syringe needle, and described staight needle is fixed and be communicated with to the other end;
Described saddle is the tubular of both ends open and movable being sheathed on described needle stand, and the length of described saddle on activity direction is greater than the length of described syringe needle;
The axial length of described needle stand is greater than the length of described syringe needle;
Described position-limit mechanism is arranged at described saddle and described needle stand, for sliding into and cover completely after described syringe needle at described saddle, described saddle is fixed on described needle stand;
The internal diameter of described protective cover is greater than the external diameter of described vacuum tube, and described protective cover covers at outside described staight needle and fixes with described needle stand.
That is to say, blood taking needle of the present invention, needle stand will be longer than syringe needle, and so, the saddle of above-mentioned tubular just can slidably reciprocate on needle stand, makes syringe needle covered and completely expose between two states and switch by saddle.Position-limit mechanism moves for limiting saddle.
During use, under original state, saddle is fixed in needle stand by position-limit mechanism, and (being the state that syringe needle exposes completely), first takes out needle guard, takes a blood sample; After having taken a blood sample, remove fixing of saddle and needle stand, saddle is slided to saddle and covers syringe needle completely to syringe needle direction, now saddle is fixed in again on needle stand and (passes through position-limit mechanism).So,, owing to not needing again needle guard to be put on and can be covered syringe needle, safety promotes greatly.
Moreover, at staight needle outer housing, establish protective cover, can effectively when staight needle is exposed, staight needle be isolated, to prevent that security incident from occurring.
Preferably, described position-limit mechanism includes one first elastic washer and two the second elastic washers;
It is upper near the interior week of one end of described staight needle that described the first elastic washer is attached at described saddle, and, the laminating that the edge of described the first elastic washer and the inwall of described saddle are level and smooth;
Two described the second elastic washer cover merging are attached on described needle stand, when described the second elastic washer covers described syringe needle or described syringe needle completely and exposes completely for sliding at described saddle, fasten with described the first elastic washer, to limit the movement of described saddle.
That is to say, at saddle, toward syringe needle direction, slide into when covering syringe needle or described syringe needle and exposing completely, for saddle and needle stand are fixed, what as the first elastic washer on week in the second elastic washer in the needle stand periphery of position-limit mechanism and saddle, fasten is fixing.Because the inwall of the first elastic washer and saddle is level and smooth laminating, extruding that therefore can be comparatively level and smooth is advanced into the position engaging with the second elastic washer.
Preferably, described position-limit mechanism comprises a spring secures rail to sleeper and two draw-in grooves;
Described two draw-in grooves are arranged on described needle stand, described spring secures rail to sleeper is arranged on described saddle, when described two draw-in grooves and described spring secures rail to sleeper cover described syringe needle or described syringe needle completely and expose completely for sliding at described saddle, be interlocked with described spring secures rail to sleeper, to limit the movement of described saddle.
That is to say, saddle endwisely slips along needle stand, and in the time of need to taking a blood sample, on the spring secures rail to sleeper on saddle and needle stand, the draw-in groove of one end of close needle stand fastens, and syringe needle exposes completely.After having taken a blood sample, when syringe needle need to be covered, saddle is slid into spring secures rail to sleeper and engage with the draw-in groove of the other end on needle stand, to cover syringe needle.In addition, said spring secures rail to sleeper, maintains the fastener of snap-fit relationship with elastic force in the prior art referring to herein, can engagement release relation as long as apply an external force that is greater than elastic force.
Preferably, described protective cover and described needle stand are one-body molded.
That is to say, further protective cover can also be used as connector, to protecting needle stand and being communicated with of staight needle.
Preferably, described protective cover and described needle stand are fixed away from the periphery spiral of one end of described syringe needle.
Herein, setting can be so that fixing between protective cover and needle stand be more firm like this.
Preferably, on described saddle, be provided with at least one skid-proof regions.Herein, the setting of skid-proof regions is in order to allow finger have larger frictional force when promoting saddle, for example, can or be that waveform/hole flute profile is to increase the contact area of finger to saddle by a certain region division on saddle at the large elastomeric material of saddle outer wrapping coefficient of friction.
Preferably, described saddle is made by elastomeric material, and described saddle and described spring secures rail to sleeper are one-body molded, and described needle stand and described draw-in groove are one-body molded, is provided with some vacancy sections on described saddle.
Vacancy section is set is herein on the one hand when making saddle cover syringe needle, still can be by the position of perusal syringe needle, thus make operation have more safety; On the other hand, the first elastic card fastener is arranged to when one-body molded with saddle, and vacancy section provides activity space for the action of the first elastic card fastener.
Positive progressive effect of the present invention is: by saddle is set, slide to cover syringe needle on needle stand, make after blood sampling, the safety of the processing of syringe needle significantly to be promoted; Because avoided the use of spring syringe needle, reduced patient's misery, by being set, protective cover further improved safety.
Accompanying drawing explanation
Fig. 1 is the structural representation of the safe blood-taking needle of preferred embodiment of the present invention.
Fig. 2 is that Fig. 1 is along the cutaway view of A-A.
The specific embodiment
Mode below by embodiment further illustrates the present invention, but does not therefore limit the present invention among described scope of embodiments.Fig. 1 is the structural representation of the safe blood-taking needle of the present embodiment, Fig. 2 is that Fig. 1 is along the cutaway view of A-A, as shown in Fig. 1～2, the safe blood-taking needle that the present embodiment relates to includes: needle stand 1, needle guard 2, staight needle 12, protective cover 3, syringe needle 6 and saddle 5, needle guard 2 is sheathed on syringe needle 6, the tubular that needle stand 1 is both ends open, one end of needle stand 1 is fixed and is communicated with 1 syringe needle 6, and staight needle 12 is fixed and be communicated with to the other end;
Saddle 5 is the tubular of both ends open and movable being sheathed on needle stand 1, and the length of saddle 5 on activity direction is greater than the length of syringe needle 6.
The axial length of needle stand 1 is greater than the length of syringe needle 6.
The internal diameter of protective cover 3 is greater than the external diameter of vacuum tube, and it is outer and one-body molded with needle stand 1 that protective cover 3 covers at staight needle 12.
The safe blood-taking needle of the present embodiment also includes a position-limit mechanism, and position-limit mechanism comprises spring secures rail to sleeper 8 and draw-in groove 81, draw-in groove 82.
Draw-in groove 81, draw-in groove 82 are arranged on needle stand 1, spring secures rail to sleeper 8 is arranged on saddle 5, when draw-in groove 81, draw-in groove 82 and spring secures rail to sleeper 8 cover syringe needle 6 or syringe needle 6 completely and expose completely for sliding at saddle 5, be interlocked with spring secures rail to sleeper 8, to limit the movement of saddle 5.
Further, be provided with skid-proof regions 7 on saddle 5, skid-proof regions 7 is the interior trench structure with zigzag decorative pattern, can, in enlarge active surface, be more conducive to finger push saddle 5.
Saddle 5 is made by elastomeric material, and saddle 5 is one-body molded with spring secures rail to sleeper 8, and protective cover 3 is one-body molded with draw-in groove 81 and draw-in groove 82, is provided with some vacancy sections (not shown) on saddle 5.
The safe blood-taking needle that the present embodiment relates to, needle stand 1 will be longer than syringe needle 6, and so, the saddle 5 of above-mentioned tubular just can slidably reciprocate on needle stand 1, makes syringe needle 6 covered and completely expose between two states and switch by saddle 5.
During use, under original state, saddle 5, by the engaging of draw-in groove 81 and spring secures rail to sleeper 8, is fixed in needle stand 1, and (being the state that syringe needle 6 exposes completely), first takes out needle guard 2, takes a blood sample; After having taken a blood sample, remove the fixing of saddle 5 and needle stand 1, saddle 5 is slided to syringe needle 6 directions to saddle 5, to cover syringe needle 6(be completely the form shown in Fig. 1～2 in the present embodiment accompanying drawing), now saddle 5 is fixed in (by the engaging of spring secures rail to sleeper 8 and draw-in groove 82) on needle stand 1 again.So,, owing to not needing again needle guard 2 to be put on and can be covered syringe needle 6, safety promotes greatly.
In addition, when staight needle 12 inserts vacuum tubes or extracts from vacuum tube, because the internal diameter of protective cover 3 is greater than the external diameter of vacuum tube, make protected cover 3 protections of whole process.
Although more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that this only illustrates, protection scope of the present invention is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present invention and essence; can make various changes or modifications to these embodiments; for example; do not use the such buckle structure of spring secures rail to sleeper and draw-in groove; but adopt elastic washer the fastening saddle of mode such as mutually to engage on needle stand; or adopt spiral to connect protective cover and needle stand etc., but these changes and modification all fall into protection scope of the present invention.
Claims (7)
1. a safe blood-taking needle, it includes a needle stand, a needle guard, a staight needle and a syringe needle, described needle guard is sheathed on described syringe needle, described staight needle is used for inserting a vacuum tube, it is characterized in that, described safe blood-taking needle also includes a protective cover, a saddle and a position-limit mechanism, and described needle stand is tubular, one end of described needle stand is fixed and is communicated with described syringe needle, and described staight needle is fixed and be communicated with to the other end;
Described saddle is the tubular of both ends open and movable being sheathed on described needle stand, and the length of described saddle on activity direction is greater than the length of described syringe needle;
The axial length of described needle stand is greater than the length of described syringe needle;
Described position-limit mechanism is arranged at described saddle and described needle stand, for sliding into and cover completely after described syringe needle at described saddle, described saddle is fixed on described needle stand;
The internal diameter of described protective cover is greater than the external diameter of described vacuum tube, and described protective cover covers at outside described staight needle and fixes with described needle stand.
2. safe blood-taking needle as claimed in claim 1, is characterized in that, described position-limit mechanism includes one first elastic washer and two the second elastic washers;
It is upper near the interior week of one end of described staight needle that described the first elastic washer is attached at described saddle, and, the laminating that the edge of described the first elastic washer and the inwall of described saddle are level and smooth;
Two described the second elastic washer cover merging are attached on described needle stand, when described the second elastic washer covers described syringe needle or described syringe needle completely and exposes completely for sliding at described saddle, fasten with described the first elastic washer, to limit the movement of described saddle.
3. safe blood-taking needle as claimed in claim 1, is characterized in that, described position-limit mechanism comprises a spring secures rail to sleeper and two draw-in grooves;
Described two draw-in grooves are arranged on described needle stand, described spring secures rail to sleeper is arranged on described saddle, when described two draw-in grooves and described spring secures rail to sleeper cover described syringe needle or described syringe needle completely and expose completely for sliding at described saddle, be interlocked with described spring secures rail to sleeper, to limit the movement of described saddle.
4. safe blood-taking needle as claimed in claim 1, is characterized in that, described protective cover and described needle stand are one-body molded.
5. safe blood-taking needle as claimed in claim 1, is characterized in that, described protective cover and described needle stand are fixed away from the periphery spiral of one end of described syringe needle.
6. the safe blood-taking needle as described in any one in claim 1～5, is characterized in that, is provided with at least one skid-proof regions on described saddle.
7. safe blood-taking needle as claimed in claim 3, is characterized in that, described saddle is made by elastomeric material, and described saddle and described spring secures rail to sleeper are one-body molded, and described needle stand and described draw-in groove are one-body molded, is provided with some vacancy sections on described saddle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410143344.8A CN103976747B (en) | 2014-04-11 | 2014-04-11 | Safe blood-taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410143344.8A CN103976747B (en) | 2014-04-11 | 2014-04-11 | Safe blood-taking needle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103976747A true CN103976747A (en) | 2014-08-13 |
| CN103976747B CN103976747B (en) | 2015-12-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410143344.8A Active CN103976747B (en) | 2014-04-11 | 2014-04-11 | Safe blood-taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103976747B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105816189A (en) * | 2015-01-04 | 2016-08-03 | 上海金塔医用器材有限公司 | Anti-needling safety blood taking needle |
| CN105816941A (en) * | 2015-01-04 | 2016-08-03 | 上海金塔医用器材有限公司 | Needling-proof injector |
| CN109893142A (en) * | 2019-04-16 | 2019-06-18 | 上海金塔医用器材有限公司 | Flexible blood-taking device and rigid blood-taking device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738665A (en) * | 1996-09-26 | 1998-04-14 | Becton, Dickinson And Company | Shield and actuator for needles |
| US20090118678A1 (en) * | 2003-11-21 | 2009-05-07 | Tsk Laboratory Japan | Injection needle |
| CN201642029U (en) * | 2010-02-09 | 2010-11-24 | 侯丽娜 | Safe disposable blood taking needle |
| CN202446098U (en) * | 2012-02-21 | 2012-09-26 | 王振民 | Vein vacuum blood taking needle with multifunctional visible blood return display |
| CN102697512A (en) * | 2012-06-04 | 2012-10-03 | 上海金塔医用器材有限公司 | Disposable safely-retracting blood taking needle |
| CN203828944U (en) * | 2014-04-11 | 2014-09-17 | 上海金塔医用器材有限公司 | Safe blood taking needle |
-
2014
- 2014-04-11 CN CN201410143344.8A patent/CN103976747B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5738665A (en) * | 1996-09-26 | 1998-04-14 | Becton, Dickinson And Company | Shield and actuator for needles |
| US20090118678A1 (en) * | 2003-11-21 | 2009-05-07 | Tsk Laboratory Japan | Injection needle |
| CN201642029U (en) * | 2010-02-09 | 2010-11-24 | 侯丽娜 | Safe disposable blood taking needle |
| CN202446098U (en) * | 2012-02-21 | 2012-09-26 | 王振民 | Vein vacuum blood taking needle with multifunctional visible blood return display |
| CN102697512A (en) * | 2012-06-04 | 2012-10-03 | 上海金塔医用器材有限公司 | Disposable safely-retracting blood taking needle |
| CN203828944U (en) * | 2014-04-11 | 2014-09-17 | 上海金塔医用器材有限公司 | Safe blood taking needle |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105816189A (en) * | 2015-01-04 | 2016-08-03 | 上海金塔医用器材有限公司 | Anti-needling safety blood taking needle |
| CN105816941A (en) * | 2015-01-04 | 2016-08-03 | 上海金塔医用器材有限公司 | Needling-proof injector |
| CN105816189B (en) * | 2015-01-04 | 2018-12-25 | 上海金塔医用器材有限公司 | Anti- safety of acupuncture blood taking needle |
| CN109893142A (en) * | 2019-04-16 | 2019-06-18 | 上海金塔医用器材有限公司 | Flexible blood-taking device and rigid blood-taking device |
| CN109893142B (en) * | 2019-04-16 | 2023-11-17 | 上海金塔医用器材有限公司 | Flexible blood sampling device and rigid blood sampling device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103976747B (en) | 2015-12-09 |
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