CN103976747B - Safe blood-taking needle - Google Patents
Safe blood-taking needle Download PDFInfo
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- CN103976747B CN103976747B CN201410143344.8A CN201410143344A CN103976747B CN 103976747 B CN103976747 B CN 103976747B CN 201410143344 A CN201410143344 A CN 201410143344A CN 103976747 B CN103976747 B CN 103976747B
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- needle
- saddle
- stand
- syringe needle
- needle stand
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Abstract
The invention discloses a kind of safe blood-taking needle, it includes a needle stand, a needle guard, a staight needle and a syringe needle, needle guard is sheathed on syringe needle, staight needle is for inserting a vacuum tube, safe blood-taking needle also includes a protective cover, a saddle and a position-limit mechanism, needle stand is tubular, and one end of needle stand is fixed and is communicated with syringe needle, and the other end is fixed and is communicated with staight needle; Saddle be the tubular of both ends open and activity be sheathed on needle stand, the length of saddle on activity direction is greater than the length of syringe needle; The axial length of needle stand is greater than the length of syringe needle; Position-limit mechanism is arranged at saddle and needle stand; The internal diameter of protective cover is greater than the external diameter of vacuum tube, and it is outer and fix with needle stand that protective cover covers at staight needle.Sliding to cover syringe needle on needle stand by arranging saddle, after making blood sampling, the safety of the process of syringe needle significantly being promoted; Because avoid the use of spring syringe needle, reducing the misery of patient, further increasing safety by arranging protective 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 blood sampling and the object of reaching a conclusion in patient, or the initial procedure of chemical examination will be completed by blood taking needle and blood taking tube, so one of blood taking needle medical device product that to be current global sales maximum.But it is worth noting, the blood collection needles human injury accident that current countries in the world hospital causes because of syringe needle fracture or medical personnel's misoperation occurs millions of person-times every year.The statistical data display that American Medical Association announces, only the U.S. about occurs that 1,000,000 person-times of medical personnel are unexpected is stabbed accident by blood taking needle every year, wherein has at least over thousands of people can by hepatitis B virus, hepatitis C virus and the AIDS viral infection that syringe needle adheres to.At every turn be 3000 dollars per capita because blood collection needles fracture by the emergency treatment expense that the medical personnel that stab and patient produce.
Domestic and international companies drops into the research and development of safety blood taking medical device energetically, and safe blood-taking needle is in the market very many, and these safety blood taking equipment have a lot of deficiency: first production cost is very high; It two is complex manufacturing; Its three be the quality of production be difficult to ensure; It four is medical personnel's complex operations; Its five be security function be difficult to ensure.
At present, conventional non-once blood taking needle after a procedure, to need to needle guard on pinhead sleeve to protect syringe needle, such as, prevent syringe needle to be bent or collision etc.But so create again new safety problem, medical worker is when overlapping syringe needle by needle guard, 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 employed the technological means of retractable needle, after blood sampling completes, utilize the isostructural elastic force of spring, syringe needle are retracted to one for the protection of in the structure such as protective sleeve of syringe needle.So, although can available protecting syringe needle, avoid medical worker to be wounded by stabbing, but patient can be caused painful greatly because of the mechanical action of needle retractable.
On the other hand, the staight needle for inserting vacuum tube of blood taking needle, after opening needle guard, is often also in naked state, processing safety is reduced.
Summary of the invention
The technical problem to be solved in the present invention is the defect in order to overcome prior art safety lower, easy aggravation patient suffering, provides the blood taking needle that a kind of safety is higher, patient suffering is less.
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 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 the other end is fixed and is communicated with described staight needle;
Described saddle be the tubular of both ends open and activity be sheathed on described needle stand, 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, after sliding at described saddle and covering described syringe needle completely, is fixed on by described saddle on described needle stand;
The internal diameter of described protective cover is greater than the external diameter of described vacuum tube, and it is outer and fix with described needle stand that described protective cover covers at described staight needle.
That is, 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 by saddle and switch between exposure two states completely.Position-limit mechanism then moves for limiting saddle.
During use, saddle is fixed in needle stand by position-limit mechanism in an initial condition, (i.e. syringe needle expose completely state), first takes out needle guard, takes a blood sample; After having taken a blood sample, remove fixing of saddle and needle stand, slided to syringe needle direction by saddle and cover syringe needle completely to saddle, now saddle is fixed in again on needle stand and (passes through position-limit mechanism).So, owing to not needing to be put on by needle guard and can cover syringe needle, safety promotes greatly.
Moreover, establish protective cover at staight needle outer housing, effectively when staight needle is exposed, staight needle can be isolated, occur to prevent security incident.
Preferably, described position-limit mechanism includes one first elastic washer and two the second elastic washers;
Described first elastic washer is attached at described saddle in the inner circumferential of one end of described staight needle, and, the laminating of the edge of described first elastic washer and the interior walls be smooth of described saddle;
Two described second elastic washer cover merging are attached on described needle stand, described second elastic washer be used for described saddle slide into cover completely described syringe needle or described syringe needle expose completely time, fasten with described first elastic washer, to limit the movement of described saddle.
That is, saddle to slide into toward syringe needle direction cover syringe needle or described syringe needle expose completely time, in order to saddle and needle stand are fixed, as the second elastic washer on the needle stand periphery of position-limit mechanism and the first elastic washer in saddle inner circumferential fasten 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 engaged 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, described two draw-in grooves and described spring secures rail to sleeper be used for described saddle slide into cover completely described syringe needle or described syringe needle expose completely time, be interlocked with described spring secures rail to sleeper, to limit the movement of described saddle.
That is, saddle slides axially along needle stand, needs when taking a blood sample, and the spring secures rail to sleeper on saddle fastens with the draw-in groove of one end of close needle stand on needle stand, and syringe needle exposes completely.After having taken a blood sample, when needing syringe needle to cover, then 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 herein, maintains the fastener of snap-fit relationship with elastic force in the prior art referred to, can engagement release relation as long as apply the external force being greater than elastic force.
Preferably, described protective cover and described needle stand one-body molded.
That is, further protective cover can also use as connector, protects with being communicated with of staight needle needle stand.
Preferably, described protective cover and described needle stand are fixed away from the periphery spiral of one end of described syringe needle.
Herein, can make between protective cover and needle stand fixing more firm is set like this.
Preferably, described saddle is provided with at least one skid-proof regions.Herein, the setting of skid-proof regions is to allow finger have larger frictional force when promoting saddle, such as, at the large elastomeric material of saddle outer wrapping coefficient of friction or region a certain on saddle can be set to waveform/hole flute profile to increase the contact area of finger to saddle.
Preferably, described saddle is made up of elastomeric material, described saddle and described spring secures rail to sleeper one-body molded, described needle stand and described draw-in groove one-body molded, described saddle is provided with some vacancy sections.
When to arrange vacancy section be herein on the one hand to make saddle cover syringe needle, still can by the position of perusal syringe needle, thus operation be made to have more safety; On the other hand, when the first elastic card fastener is arranged to one-body molded with saddle, then vacancy section is that the action of the first elastic card fastener provides activity space.
Positive progressive effect of the present invention is: slide to cover syringe needle on needle stand by arranging saddle, significantly promotes after making blood sampling to the safety of the process of syringe needle; Because avoid the use of spring syringe needle, reducing the misery of patient, further increasing safety by arranging protective cover.
Accompanying drawing explanation
Fig. 1 is the structural representation of the safe blood-taking needle of present pre-ferred embodiments.
Fig. 2 is the sectional view of Fig. 1 along A-A.
Detailed description of the invention
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 the sectional view of Fig. 1 along 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, needle stand 1 is the tubular of both ends open, and one end of needle stand 1 is fixed and is communicated with 1 syringe needle 6, and the other end is fixed and is communicated with staight needle 12;
Saddle 5 be the tubular of both ends open and activity be sheathed on needle stand 1, 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, draw-in groove 81, draw-in groove 82 and spring secures rail to sleeper 8 for slide at saddle 5 cover completely syringe needle 6 or syringe needle 6 expose completely time, be interlocked with spring secures rail to sleeper 8, to limit the movement of saddle 5.
Further, saddle 5 is provided with skid-proof regions 7, skid-proof regions 7 is the trench structure of interior band sawtooth pattern, while enlarge active surface, can be more conducive to finger push saddle 5.
Saddle 5 is made up of elastomeric material, and saddle 5 is one-body molded with spring secures rail to sleeper 8, protective cover 3 and draw-in groove 81 and draw-in groove 82 one-body molded, saddle 5 is provided with some vacancy sections (not shown).
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 by saddle 5 and switch between exposure two states completely.
During use, saddle 5 is by the engaging of draw-in groove 81 and spring secures rail to sleeper 8 in an initial condition, is fixed in needle stand 1, (i.e. syringe needle 6 expose completely state), first takes out needle guard 2, takes a blood sample; After having taken a blood sample, releasing saddle 5 is fixing with needle stand 1, saddle 5 is slided to syringe needle 6 direction to saddle 5 and covers the form shown in Fig. 1 ~ 2 in syringe needle 6(and the present embodiment accompanying drawing completely), now saddle 5 to be fixed on needle stand 1 (engaging by spring secures rail to sleeper 8 and draw-in groove 82) again.So, can cover syringe needle 6 owing to not needing to be put on by needle guard 2, safety promotes greatly again.
In addition, when staight needle 12 inserts vacuum tube or extracts from vacuum tube, the internal diameter due to protective cover 3 is greater than the external diameter of vacuum tube, and the protected cover 3 of whole process is protected.
Although the foregoing describe 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 defined by the appended claims.Those skilled in the art is under the prerequisite not deviating from principle of the present invention and essence; various changes or modifications can be made to these embodiments; such as; do not use spring secures rail to sleeper and the such buckle structure of 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 change and amendment all falls into protection scope of the present invention.
Claims (5)
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 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 the other end is fixed and is communicated with described staight needle;
Described saddle be the tubular of both ends open and activity be sheathed on described needle stand, 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, after sliding at described saddle and covering described syringe needle completely, is fixed on by described saddle on described needle stand;
The internal diameter of described protective cover is greater than the external diameter of described vacuum tube, and it is outer and fix with described needle stand that described protective cover covers at described staight needle, and 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, described two draw-in grooves and described spring secures rail to sleeper be used for described saddle slide into cover completely described syringe needle or described syringe needle expose completely time, be interlocked with described spring secures rail to sleeper, to limit the movement of described saddle.
2. safe blood-taking needle as claimed in claim 1, is characterized in that, described protective cover and described needle stand one-body molded.
3. safe blood-taking needle as claimed in claim 1, it 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.
4. the safe blood-taking needle according to any one of claims 1 to 3, is characterized in that, described saddle is provided with at least one skid-proof regions.
5. safe blood-taking needle as claimed in claim 1, it is characterized in that, described saddle is made up of elastomeric material, described saddle and described spring secures rail to sleeper one-body molded, described needle stand and described draw-in groove one-body molded, described saddle is provided with some vacancy sections.
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 CN103976747A (en) | 2014-08-13 |
| CN103976747B true CN103976747B (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410143344.8A Active CN103976747B (en) | 2014-04-11 | 2014-04-11 | Safe blood-taking needle |
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| CN (1) | CN103976747B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Citations (5)
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005152541A (en) * | 2003-11-21 | 2005-06-16 | Tasuku:Kk | Injection needle |
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2014
- 2014-04-11 CN CN201410143344.8A patent/CN103976747B/en active Active
Patent Citations (5)
| 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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN103976747A (en) | 2014-08-13 |
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