CN204049656U - Safe blood-taking needle - Google Patents
Safe blood-taking needle Download PDFInfo
- Publication number
- CN204049656U CN204049656U CN201420419136.1U CN201420419136U CN204049656U CN 204049656 U CN204049656 U CN 204049656U CN 201420419136 U CN201420419136 U CN 201420419136U CN 204049656 U CN204049656 U CN 204049656U
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- China
- Prior art keywords
- saddle
- needle
- syringe needle
- needle stand
- stand
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Abstract
This utility model provides a kind of safe blood-taking needle, and it includes needle stand, needle guard, syringe needle, saddle, handle and position-limit mechanism, and needle stand is tubular, and one end of needle stand is fixed and is communicated with syringe needle, and the other end offers the interface be connected with a carrier pipe of outside; 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; Handle is near needle stand and fix with saddle; Saddle is provided with over cap; Saddle and over cap fix, and the junction surface between over cap and saddle is level and smooth.Because avoid spring syringe needle use and arrange further over cap protection saddle and with saddle smooth engagement, reduce the misery of patient.
Description
Technical field
This utility model relates to a kind of blood taking needle, particularly 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 disposable blood taking needle before use, to need to needle guard on pinhead sleeve to protect syringe needle, such as, prevent syringe needle to be bent or collision etc.During use, when pulling out needle guard, easily cause pricking hazard, but real danger disposal stage after blood sampling completes, after extracting in person of blood collecting's body, when carrying out waste disposal, no matter putting into the process cartridge of specialty or bringing needle guard, the danger of being all easily wounded by stabbing, 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.
In addition, blood taking needle, when operating, often need to be affixed with skin, and existing blood taking needle is when action, often smoothly non-between the parts of blood taking needle and parts, or there is crack.So, likely cause the skin of patient to be clamped by crack or the adverse consequences such as adhesion, increased the weight of the misery of patient.
Utility model content
The technical problems to be solved in the utility model 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.
This utility model solves above-mentioned technical problem by following technical proposals:
A kind of safe blood-taking needle, it includes a needle stand, a needle guard and a syringe needle, described needle guard is sheathed on described syringe needle, its feature is, described safe blood-taking needle also includes a saddle, leader and a position-limit mechanism, described needle stand is tubular, and one end of described needle stand is fixed and is communicated with described syringe needle, and the other end offers the interface be connected with a carrier pipe of outside;
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;
Described handle is near described needle stand and fix with described saddle;
Described saddle is provided with one for the protection of the over cap of described position-limit mechanism;
Described saddle and described over cap fix, and the junction surface between described over cap and described saddle is level and smooth.
That is, 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 by saddle and switch between exposure two states completely.Position-limit mechanism then moves for limiting saddle.
Position-limit mechanism on saddle, owing to likely producing maloperation because of external impact, is therefore provided with over cap to protect the position-limit mechanism on saddle on saddle.In addition, owing to considering the contact of patient skin, the junction surface between over cap and saddle is set to level and smooth.
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.
In addition, fixed handle on needle stand, can grasp handle when operating on the one hand, on the other hand, handle, near living needle stand, makes only to need a thumb to push down handle and saddle carries out movable operation simultaneously, makes to operate relatively existing blood taking needle also more convenient.
Preferably, described position-limit mechanism includes one first elastic washer and two the second elastic washers;
Described first elastic washer is attached in the inner circumferential of described saddle away from one end of described syringe 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 syringe needle or 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 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.
Preferably, described saddle includes a level and smooth end face, there is the angle of 5 ~ 10 ° between the extended surface of described end face and the axial line of described needle stand.
Herein, due to syringe needle is inserted human body take a blood sample time, the axial line of syringe needle and needle stand usually and skin plane be the angle of 5 ~ 10 °, this just means, during handling safety blood taking needle, the face of saddle and contact skin is also that the angle of 5 ~ 10 ° just can farthest make blood collection procedure more smooth with above-mentioned axial line, and reduces the misery of patient.
Positive progressive effect of the present utility model 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 spring syringe needle use and arrange further over cap protection saddle and with saddle smooth engagement, reduce the misery of patient.
Accompanying drawing explanation
Fig. 1 is the structural representation of the safe blood-taking needle of this utility model preferred embodiment.
Fig. 2 is the sectional view of Fig. 1 along A-A.
Detailed description of the invention
Fig. 1 is the structural representation of the safe blood-taking needle of the present embodiment, and Fig. 2 is the sectional view of Fig. 1 along A-A, and as shown in Fig. 1 ~ 2, the safe blood-taking needle that the present embodiment relates to includes:
Needle stand 2, saddle 1, handle 7, needle guard 5, syringe needle 6 and a position-limit mechanism, needle guard 5 is sheathed on syringe needle 6, and needle stand 2 is tubular, and one end of needle stand 2 is fixed and is communicated with syringe needle 6, and the other end offers the interface be connected with a carrier pipe of outside;
Saddle 1 be the tubular of both ends open and activity be sheathed on needle stand 2, the length of saddle 1 on activity direction is greater than the length of syringe needle 6.
The axial length of needle stand 2 is greater than the length of syringe needle 6.
Position-limit mechanism comprises spring secures rail to sleeper 11 and draw-in groove 31, draw-in groove 32.
Draw-in groove 31, draw-in groove 32 are arranged on needle stand 2, spring secures rail to sleeper 11 is arranged on saddle 1, draw-in groove 31, draw-in groove 32 and spring secures rail to sleeper 11 for slide at saddle 1 cover completely syringe needle 6 or syringe needle 6 expose completely time, be interlocked with spring secures rail to sleeper 11, to limit the movement of saddle 1.
Handle 7 is near needle stand 2 and fix with saddle 1.
Saddle 1 is provided with the over cap 4 for the protection of position-limit mechanism.
Saddle 1 and over cap 4 fix, and the junction surface between over cap 4 and saddle 1 is level and smooth.
Saddle 1 is provided with skid-proof regions 12 and skid-proof regions 13.
Saddle 1 is made up of elastomeric material, and saddle 1 is one-body molded with spring secures rail to sleeper 11, and needle stand 2 and draw-in groove 31, draw-in groove 32 are one-body molded, saddle 1 are provided with some vacancy sections (not shown).
Saddle 1 includes a level and smooth end face, there is the angle of 5 ° between the extended surface of end face and the axial line of needle stand.
Due to syringe needle is inserted human body take a blood sample time, the axial line of syringe needle 6 and needle stand 2 usually and skin plane be the angle of 5 ~ 10 °, this just means, during handling safety blood taking needle, the angle that saddle 1 is also 5 ~ 10 ° with above-mentioned axial line with the face of contact skin just can farthest make blood collection procedure more smooth, and reduces the misery of patient.
On the other hand, between over cap 4 and saddle 1, there is no gap with the joint on the face of contact skin, the jammed situation of the skin of patient can not caused when operating.
Although the foregoing describe 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 defined by the appended claims.Those skilled in the art is under the prerequisite not deviating from principle of the present utility model 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 it is first-class in needle stand to adopt elastic washer the fastening saddle of mode such as mutually to engage, but these change and amendment all falls into protection domain of the present utility model.
Claims (6)
1. a safe blood-taking needle, it includes a needle stand, a needle guard and a syringe needle, described needle guard is sheathed on described syringe needle, it is characterized in that, described safe blood-taking needle also includes a saddle, leader and a position-limit mechanism, described needle stand is tubular, and one end of described needle stand is fixed and is communicated with described syringe needle, and the other end offers the interface be connected with a carrier pipe of outside;
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;
Described handle is near described needle stand and fix with described saddle;
Described saddle is provided with one for the protection of the over cap of described position-limit mechanism;
Described saddle and described over cap fix, and the junction surface between described over cap and described saddle is level and smooth.
2. safe blood-taking needle as claimed in claim 1, it is characterized in that, described position-limit mechanism includes one first elastic washer and two the second elastic washers;
Described first elastic washer is attached in the inner circumferential of described saddle away from one end of described syringe 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.
3. safe blood-taking needle as claimed in claim 1, it 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, described two draw-in grooves and described spring secures rail to sleeper be used for described saddle slide into cover completely syringe needle or syringe needle expose completely time, be interlocked with described spring secures rail to sleeper, to limit the movement of described saddle.
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 3, 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.
6. safe blood-taking needle as claimed in claim 3, it is characterized in that, described saddle includes a level and smooth end face, there is the angle of 5 ~ 10 ° between the extended surface of described end face and the axial line of described needle stand.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419136.1U CN204049656U (en) | 2014-07-28 | 2014-07-28 | Safe blood-taking needle |
| PCT/CN2014/084390 WO2016015364A1 (en) | 2014-07-28 | 2014-08-14 | Safe blood sampling needle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420419136.1U CN204049656U (en) | 2014-07-28 | 2014-07-28 | Safe blood-taking needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204049656U true CN204049656U (en) | 2014-12-31 |
Family
ID=52191265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420419136.1U Withdrawn - After Issue CN204049656U (en) | 2014-07-28 | 2014-07-28 | Safe blood-taking needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204049656U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138264A (en) * | 2014-07-28 | 2014-11-12 | 上海金塔医用器材有限公司 | Safe blood taking needle |
-
2014
- 2014-07-28 CN CN201420419136.1U patent/CN204049656U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104138264A (en) * | 2014-07-28 | 2014-11-12 | 上海金塔医用器材有限公司 | Safe blood taking needle |
| CN104138264B (en) * | 2014-07-28 | 2016-08-24 | 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 | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20141231 Effective date of abandoning: 20160824 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |