CN203828944U - Safe blood taking needle - Google Patents
Safe blood taking needle Download PDFInfo
- Publication number
- CN203828944U CN203828944U CN201420173151.2U CN201420173151U CN203828944U CN 203828944 U CN203828944 U CN 203828944U CN 201420173151 U CN201420173151 U CN 201420173151U CN 203828944 U CN203828944 U CN 203828944U
- Authority
- CN
- China
- Prior art keywords
- needle
- saddle
- syringe needle
- stand
- needle stand
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000008280 blood Substances 0.000 title abstract description 24
- 210000004369 blood Anatomy 0.000 title abstract description 24
- 230000001681 protective effect Effects 0.000 claims abstract description 25
- 241001669679 Eleotris Species 0.000 claims description 21
- 230000000694 effects Effects 0.000 claims description 4
- 239000013536 elastomeric material Substances 0.000 claims description 4
- 230000004323 axial length Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 208000002193 Pain Diseases 0.000 abstract 1
- 230000036407 pain Effects 0.000 abstract 1
- 238000010241 blood sampling Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 208000030507 AIDS Diseases 0.000 description 1
- 241000711549 Hepacivirus C Species 0.000 description 1
- 241000700721 Hepatitis B virus Species 0.000 description 1
- 208000036142 Viral infection Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000009385 viral infection Effects 0.000 description 1
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model provides a safe blood taking needle. The needle comprises a needle base, a needle sleeve, a straight needle and a needle head. The needle head is sleeved with the needle sleeve, the straight needle is inserted into a vacuum tube, and the safe blood taking needle further comprises a protective cover, a sliding part and a limiting mechanism. The needle base is in a tube shape, the needle head is fixed to one end of the needle base in a communicated mode, and the straight needle is fixed to the other end of the needle base in a communicated mode. The sliding part is in a tube shape, the two ends of the sliding part are open, and the needle base is movably sleeved with the sliding part. The length of the sliding part in the moving direction is larger than the length of the needle head. The length of the needle base in the axial direction is larger than the length of the needle head. The limiting mechanism is arranged on the sliding part and the needle base. The inner diameter of the protective cover is larger than the outer diameter of the vacuum tube. The protective cover is arranged outside the straight needle and fixed to the needle base. The sliding part slides on the needle base to block the needle head, so that safety of treating the needle head after blood taking is improved substantially; because a spring type needle head is prevented from being used, pains of a patient are relieved, and safety is further improved through the arrangement of the protective cover.
Description
Technical field
This utility model 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.But, 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.At every turn because the rupture medical personnel that stabbed and the emergency treatment expense of patient's generation of blood collection needles is 3000 dollars per capita.
The research and development that company drops into safety blood taking medical device in succession energetically both at home and abroad, 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; 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, need to be to needle guard on pinhead sleeve with protection syringe needle after use, for example, prevent that syringe needle is bent or collision etc.But so produced again new safety problem, medical worker is in the time 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, syringe needle are retracted in the structures such as a 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 patient painful greatly because of the mechanical action of needle retractable.
On the other hand, blood taking needle for inserting the staight needle of vacuum tube, opening after needle guard, often also in naked state, make processing safety reduce.
Utility model content
The technical problems to be solved in the utility model 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.
This utility model is to solve 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 utility model, 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.
When 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, establish protective cover at staight needle outer housing, can, effectively in the time that 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, slide into when covering syringe needle or described syringe needle and exposing completely toward syringe needle direction at saddle, for saddle and needle stand are fixed, what fasten as the first elastic washer on week in the second elastic washer in the needle stand periphery of position-limit mechanism and saddle 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 slides axially along needle stand, and need to take a blood sample time, 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 herein, maintains the fastener of snap-fit relationship with elastic force in the prior art referring to, 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 use 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, arrange like this and can make fixing more firm between protective cover and needle stand.
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 in the time 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 up of 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, by the position of perusal syringe needle, have more safety thereby make to operate; 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 utility model is: on needle stand, slide to cover syringe needle by saddle is set, the safety of the processing to syringe needle after taking a blood sample is significantly promoted; Because avoided the use of spring syringe needle, reduce patient's misery, by being set, protective cover further improves safety.
Brief description of the drawings
Fig. 1 is the structural representation of the safe blood-taking needle of this utility model preferred embodiment.
Fig. 2 is the cutaway view of Fig. 1 along A-A.
Detailed description of the invention
Mode below by embodiment further illustrates this utility model, but therefore this utility model is not limited 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 cutaway 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, 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;
The tubular that saddle 5 is both ends open and movable being 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, 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 be in enlarge active surface, 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, 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.
When 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 cover syringe needle 6(completely to saddle 5 be 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 tube or extracts from vacuum tube, because the internal diameter of protective cover 3 is greater than the external diameter of vacuum tube, the protected cover 3 of whole process is protected.
Although more than described detailed description of the invention of the present utility model, it will be understood by those of skill in the art that this only illustrates, protection domain of the present utility model is limited by appended claims.Those skilled in the art is not deviating under the prerequisite of principle of the present utility model 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 amendment all fall into protection domain of the present utility model.
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 up of 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 |
|---|---|---|---|
| CN201420173151.2U CN203828944U (en) | 2014-04-11 | 2014-04-11 | Safe blood taking needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420173151.2U CN203828944U (en) | 2014-04-11 | 2014-04-11 | Safe blood taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203828944U true CN203828944U (en) | 2014-09-17 |
Family
ID=51506844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420173151.2U Expired - Lifetime CN203828944U (en) | 2014-04-11 | 2014-04-11 | Safe blood taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203828944U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976747A (en) * | 2014-04-11 | 2014-08-13 | 上海金塔医用器材有限公司 | Safety blood taking needle |
-
2014
- 2014-04-11 CN CN201420173151.2U patent/CN203828944U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103976747A (en) * | 2014-04-11 | 2014-08-13 | 上海金塔医用器材有限公司 | Safety blood taking needle |
| CN103976747B (en) * | 2014-04-11 | 2015-12-09 | 上海金塔医用器材有限公司 | Safe blood-taking needle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140917 |
|
| CX01 | Expiry of patent term |