CN204033353U - Safe blood-taking needle - Google Patents
Safe blood-taking needle Download PDFInfo
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- CN204033353U CN204033353U CN201420456052.5U CN201420456052U CN204033353U CN 204033353 U CN204033353 U CN 204033353U CN 201420456052 U CN201420456052 U CN 201420456052U CN 204033353 U CN204033353 U CN 204033353U
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- urceolus
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- 239000008280 blood Substances 0.000 claims abstract description 86
- 210000004369 blood Anatomy 0.000 claims abstract description 83
- 238000005520 cutting process Methods 0.000 claims abstract description 26
- 239000012780 transparent material Substances 0.000 claims abstract description 4
- 238000010241 blood sampling Methods 0.000 abstract description 12
- 229940127554 medical product Drugs 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 15
- 210000003462 vein Anatomy 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
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- 208000012266 Needlestick injury Diseases 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 210000004247 hand Anatomy 0.000 description 3
- 208000030507 AIDS Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
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- 239000002699 waste material Substances 0.000 description 2
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- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000001467 acupuncture Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 210000000601 blood cell Anatomy 0.000 description 1
- 230000036772 blood pressure Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000023597 hemostasis Effects 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 230000001737 promoting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
- 210000003813 thumb Anatomy 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The application relates to field of medical products, in particular to a kind of safe blood-taking needle.Comprise needle tubing, needle stand and urceolus; Described needle stand comprises the blood back form be made up of transparent material and the limit assembly for limiting described syringe location; Described needle tubing passes described blood back form and is fixedly connected with it; The described needle tubing part be positioned within described blood back form is provided with blood outlet; One end of described blood back form and described needle tubing can be passed by the head of described urceolus, and one end that described needle tubing stretches out described urceolus is provided with the cutting edge of inclination; The head of described urceolus is provided with the Control Component coordinated with described limit assembly; The afterbody of described urceolus is provided with the screens parts for stoping described needle stand to be departed from by the afterbody of described urceolus.The safe blood-taking needle that this utility model embodiment provides can save again blood sampling time and blood sampling cost while guarantee safety.
Description
Technical field
The application relates to field of medical products, in particular to a kind of safe blood-taking needle.
Background technology
Usually following three kinds of approach are had: (1) subcutaneous blood sampling: be used for detecting the differential counting of blood cell component to the collection of blood preparation; Many uses subcutaneous (real core or prismatic needle point) blood taking needle; (2), venous blood collection: for carrying out detailed detection to blood cytology, nosetiology, immunology, hereditism and other related discipline indexs, very wide in clinical middle application, use pen type, split type vein (hollow) blood taking needle or syringe more; (3), arterial blood drawing, how detect aterial blood gas indexes following in critical emergency case, apply less, arterial blood drawing perforator (band pin) that uses gathers more.At present in venous blood collection, various countries clinical staff, all uses pen type blood collection, split type vein blood taking needle and syringe.
Pen type blood collection: its structure is through needle tubing, and there is sharp cutting edge at its two ends; In needle tubing, hypomere is fixed on needle stand, and front end is called venipuncture needle, rear end is called collection blood pin, collection blood wire surface has blood resistance unit, there is protective casing at needle tubing two ends.During use, blood taking needle is rotated and is fixed on urceolus outer cylinder front end, implement venipuncture, after success, vacuum test tube is inserted urceolus rear end cavity, make collection blood pin rear end cutting edge through blood resistance unit and run through to thrust vacuum tube plug, under suction function, by blood suction blood taking tube; So repeatedly, the collection of multitube time blood specimen can be realized; Take a blood sample complete, extract venipuncture needle, local hemostasis, to discarded blood taking needle, need nurse again by blood taking needle front end sheath, be enclosed within blood taking needle appearance again, then rotate needle body, blood taking needle is taken off from urceolus, then blood taking needle is discarded in waste holder; In this operation, nurse's both hands overlap process again, and due to many reasons, nurse's finger, usually easily by needle pricks, needle stick injury occurs, and causes infection or the propagation of blood borne disease, as hepatitis C, acquired immune deficiency syndrome (AIDS); Consequence is extremely serious.
Add up according to American National medical department: occur in injection puncture and account for 26% of needle stick injury incidence rate with the pricking wound of blood collection procedure; Federal Government promulgated " safety of acupuncture and prevention " bill in 1120: the medical apparatus requiring medical institutions to be necessary for employee to provide safe; The operation standard of the staff of the contact blood source disease that U.S. occupation health safety administration formulates, wherein requires: in injection, puncture procedure code, firmly stop: hands take off syringe needle, bending syringe needle, from broken needle head, the behavior of overlapping needle guard again.
China, due to economical and historical reasons, is the mode using syringe donor source and blood taking needle to gather more than clinical blood sampling operation.According to China's medical statistics, scholarly journal report, clinical care practitioner by the incidence rate of needle stick injury up to more than 80%.Endanger extremely serious.
Domestic existing safe blood-taking needle scheme is disclosed, as: ZL 201120503317.9; In technique scheme, although its venipuncture needle can be regained in the cavity of urceolus, safety is higher.But it in use, can not know whether syringe needle inserts intravenous after venipuncture is needled into human body by medical personnel, directly can only use vacuum test tube.If syringe needle does not enter human vein, then vacuum test tube just cannot collect blood, and now medical personnel just can judge that syringe needle does not enter vein, thus adjust.If adjust unsuccessful, then vacuum test tube can only be discarded, again puncture at new position, until successful acquisition is to blood.Which substantially increases blood sampling time and blood sampling cost.
Utility model content
This application provides a kind of safe blood-taking needle, to solve the problem.
According to the safe blood-taking needle that disclosure embodiment provides, comprise needle tubing, needle stand and urceolus;
Described needle stand comprises the blood back form be made up of transparent material and the limit assembly for limiting described syringe location;
Described needle tubing passes described blood back form and is fixedly connected with it; The described needle tubing part be positioned within described blood back form is provided with blood outlet;
One end of described blood back form and described needle tubing can be passed by the head of described urceolus, and one end that described needle tubing stretches out described urceolus is provided with the cutting edge of inclination; The head of described urceolus is provided with the Control Component coordinated with described limit assembly;
The afterbody of described urceolus is provided with the screens parts for stoping described needle stand to be departed from by the afterbody of described urceolus.
In above-mentioned safe blood-taking needle,
The part that described needle tubing is positioned at described blood back form disconnects;
Or
Described needle tubing is positioned at the surface perforate of described blood back form.
In above-mentioned safe blood-taking needle,
Described limit assembly comprises the afterbody of multi-disc by described blood back form to the arcuated fin piece of oblique rear abduction; The lateral wall of wherein arcuated fin piece described in a slice is provided with fixture block;
The head of described urceolus is tapered, and its tip arranges projection; The inner hollow of described projection, its end face offers spacing hole; Described blood back form can be passed by described spacing hole, and described arcuated fin piece can fit tightly with the inner portion of described urceolus, and its afterbody extends to the middle part of described urceolus; Arrange elasticity part in described projection, the two ends of described elasticity part offset with the front end of described end face and described arcuated fin piece respectively;
Described Control Component comprises the window of the head being arranged on described urceolus; Lower laminate is coated with outside described window; One end of described lower laminate is connected with the head tip of described urceolus; Described fixture block can be stuck in the lower edge of described window.
In above-mentioned safe blood-taking needle, described arcuated fin piece is two panels, and lays respectively at front and the back side of described cutting edge; Described fixture block be arranged on be positioned at described cutting edge front described arcuated fin piece on.
In above-mentioned safe blood-taking needle, described fixture block is triangle at the axial cross section of described needle tubing, and its side is towards the lateral wall of described arcuated fin piece, and side is towards the head of described needle stand, and opposite side is towards the afterbody of described needle stand;
Described fixture block is obtuse angle towards the angle of the side of described needle stand head and described arcuated fin piece head.
In above-mentioned safe blood-taking needle, described lower laminate is provided with briquetting towards the side of described window, and described briquetting is relative with described fixture block.
In above-mentioned safe blood-taking needle, described screens parts comprise interior hoop; Described interior hoop can be inserted by the afterbody of described urceolus, and fixes with described urceolus.
In above-mentioned safe blood-taking needle, the afterbody of described interior hoop flushes with the afterbody of described urceolus.
In above-mentioned safe blood-taking needle, the lateral wall circumference of described interior hoop is provided with snap ring; The medial wall of described urceolus is provided with the draw-in groove coordinated with described snap ring.
In above-mentioned safe blood-taking needle, the position in front and the back side that the outer wall of described urceolus is positioned at described cutting edge is provided with damper portion.
The technical scheme that embodiment of the present disclosure provides can comprise following beneficial effect:
The safe blood-taking needle that this utility model embodiment provides is by being set to limit assembly and blood back form two parts by needle stand, the position of needle tubing can be limited by limit assembly, make needle tubing can stretch out the head of urceolus in use, and with within urceolus of can retracting after finishing using, prevent syringe needle from accidentally injuring other people; Meanwhile, medical personnel can observe blood back situation by blood back form again, and then reflect whether syringe needle enters human vein intuitively.
Therefore, the safe blood-taking needle that this utility model embodiment provides can save again blood sampling time and blood sampling cost while guarantee safety.
Should be understood that, it is only exemplary that above general description and details hereinafter describe, and can not limit the disclosure.
Accompanying drawing explanation
The Split type structure schematic diagram of the safe blood-taking needle that Fig. 1 provides for this utility model embodiment;
The structural representation of the longitudinal cross-section of the safe blood-taking needle that Fig. 2 provides for this utility model embodiment;
The fit structure schematic diagram of the needle tubing that Fig. 3 provides for this utility model embodiment and limit assembly;
The outer tube structure schematic diagram of the partly cut-away that Fig. 4 provides for this utility model embodiment;
The structural representation of the screens parts that Fig. 5 provides for this utility model embodiment.
Accompanying drawing illustrates: 10-needle tubing; 100-blood exports; 102-cutting edge; 12-needle stand; 120-blood back form; 122-limit assembly; 1220-arcuated fin piece; 1222-fixture block; 1224-brace table; 14-urceolus; 140-Control Component; 1400-window; Laminate under 1402-; 1404-briquetting; 141-is protruding; 142-spacing hole; 143-elasticity part; 144-draw-in groove; 145-damper portion; 146-band; 147-hands handle; 16-screens parts; Hoop in 160-; 162-snap ring; 18-blood resistance unit.
Accompanying drawing to be herein merged in description and to form the part of this description, shows and meets embodiment of the present utility model, and is used from description one and explains principle of the present utility model.
Detailed description of the invention
Also by reference to the accompanying drawings this utility model is described in further detail below by specific embodiment.
Embodiment of the present utility model provides a kind of safe blood-taking needle, as depicted in figs. 1 and 2, comprises needle tubing 10, needle stand 12 and urceolus 14;
Needle stand 12 comprises the blood back form 120 be made up of transparent material and the limit assembly 122 for limiting syringe location;
Needle tubing 10 passes blood back form 120 and is fixedly connected with it; Needle tubing 10 part be positioned within blood back form 120 is provided with blood outlet 100;
One end of blood back form 120 and needle tubing 10 can be passed by the head of urceolus 3, and one end that needle tubing 10 stretches out urceolus 14 is provided with the cutting edge 102 of inclination; The head of urceolus 3 is provided with the Control Component 140 coordinated with limit assembly 122;
The afterbody of urceolus 14 is provided with the screens parts 16 for stoping needle stand 12 to be departed from by the afterbody of urceolus 14.
By needle stand 12 being set to limit assembly 122 and blood back form 120 two parts, the position of needle tubing can be limited by limit assembly 122, make needle tubing 10 can stretch out the head of urceolus in use, and blood sampling after with urceolus 14 of can retracting within, prevent cutting edge 102 from accidentally injuring other people; Simultaneously, after syringe needle enters human vein blood vessel, under blood pressure effect, blood can flow in needle tubing 10, and export in 100 inflow blood back forms 120 by blood, such medical personnel just can observe blood back situation by blood back form 120, and then judge whether syringe needle enters human vein intuitively.Therefore the safe blood-taking needle that this utility model embodiment provides can save blood sampling time, and effectively prevents the waste of vacuum test tube, reduces blood sampling cost.
Wherein, blood outlet 100 can be adopted and be arranged in two ways.The first is that part needle tubing 10 being positioned at blood back form 120 disconnects, and be then individually fixed in by two parts on needle stand 12, the gap between two sections of needle tubings 10 just forms blood outlet 100.The second is the surface perforate being positioned at blood back form 120 at needle tubing 10, forms blood outlet 100.
In above-mentioned two kinds of modes, first kind of way ratio is easier to realize, and cost is also lower.But because needle tubing 10 blocks as two parts by needs, then each section of needle tubing 10 only has one end to be fixed on needle stand 12, lessens bonding strength like this, when stressed larger time needle tubing 10 and needle stand 12 may be caused to depart from.And the second way is owing to just offering a perforate at the sidepiece of needle tubing 10, therefore needle tubing 10 is still one, and more greatly, fastness is also better for its bonding strength with needle stand 12.But because needle tubing 10 is very tiny, therefore at its side-wall hole, difficulty is comparatively large technically, not only can reduce production efficiency, also easily cause the damage of needle tubing 10, increase cost.
In embodiment of the present utility model, limit assembly 122 and Control Component 140 are responsible for the function limiting needle tubing 10.When blood taking needle is in using state, limit assembly 122 needs needle tubing 10 and urceolus 14 to keep fixing, enable medical personnel, by promoting urceolus 14, the head of needle tubing 10 is thrust human vein, and after completing blood sampling, operation Control Component 140, make limit assembly 122 can remove fixing, so that needle tubing 10 can be retracted in urceolus 14 needle tubing 10 position.
For the ease of reaching above-mentioned effect, as shown in Figure 3, limit assembly 122 provided by the utility model comprises the afterbody of multi-disc by blood back form 120 to the arcuated fin piece 1220 of oblique rear abduction; The lateral wall of wherein a slice arcuated fin piece 1220 is provided with fixture block 1222;
The head of urceolus 14 is tapered, and its tip arranges protruding 141; The inner hollow of protruding 141, its end face offers spacing hole 142; Blood back form 120 can be passed by spacing hole 142, and arcuated fin piece 1220 can fit tightly with the inner portion of urceolus 14, and its afterbody extends to the middle part of urceolus 14; Arrange elasticity part 143, such as spring in protruding 141, the two ends of elasticity part 143 offset with the front end of end face and arcuated fin piece 1220 respectively;
As shown in Figure 4, Control Component 140 comprises the window 1400 of the head being arranged on urceolus 14; Lower laminate 1402 is coated with outside window 1400; One end of lower laminate 1402 is connected with the head tip of urceolus 14; Fixture block 1222 can be stuck in the lower edge of window 1400.Wherein, lower laminate 1402 can select laminated structure.
By coordinating of multi-disc arcuated fin piece 1220 and urceolus 14 head, needle tubing 10 just can be made to be fixed in the radial direction thereof, needle tubing 10 also can be stoped simultaneously axially to move forward along it.And needle tubing 10 just can be stoped by window 1400 axially to move backward along it with coordinating of fixture block 1222.So just, make needle tubing 10 movement in all directions all be restricted, realize fixed effect.
And when needs are removed fixing, can press down lower laminate 1402, fixture block 1222 just can be pressed in urceolus 14 by lower laminate, moves just no longer limited after such needle tubing 10, under the effect of elasticity part 143, needle tubing 10 and limit assembly 122 just can be sprung in urceolus 14.Because lower laminate 1402 is connected with the head tip of urceolus 14, and fixture block 1222 is stuck in the lower edge of window 1400, therefore when pressing down, medical personnel can exert a force to the lower end of lower laminate 1402, make lower laminate 1402 can with the junction of itself and urceolus 14 for axle rotates, like this because the point of application is comparatively far away apart from fulcrum, power wall is longer, and required power is just relatively little.
In order to increase the force area of elasticity part 143, the afterbody of blood back form 120 also can be made to form the brace table 1224 of an abduction, and arcuated fin piece 1220 is connected with this brace table 1224.
When needle tubing 10 is thrust human body, need by cutting edge 102 upward, then oliquely downward to exert a force, therefore, advocating suffered by needle tubing 10 will come from the positive and negative both sides of cutting edge 102, and the power on other direction is relatively little.Further, medical personnel when operating, due to cutting edge 102 upward, therefore medical personnel carry out operating in this side is most convenient.
For this characteristic, when designing, arcuated fin piece 1220 can be designed to two panels, and lay respectively at front and the back side of cutting edge 102; Fixture block 1222 be arranged on be positioned at cutting edge 102 front arcuated fin piece 1220 on.
Such design can simplify structure, save material, goes back convenient operation simultaneously.
In addition, because when operating, medical personnel mainly oliquely downward exert a force, advocating suffered by the head of therefore needle tubing 10 will come from below, and like this, the trend that needle tubing 10 just can rotate for fulcrum with needle stand 12, makes the tail down side of needle tubing 10 rotate.For this feature, the arcuated fin piece 1220 being positioned at cutting edge 102 back side can be larger, to bear larger power, it is smaller that the arcuated fin piece 1220 being provided with fixture block 1222 then can do, this power needed for arcuated fin piece 1220 deformation can be reduced like this, and then be more convenient to medical personnel's operation.
Because arcuated fin piece 1220 and urceolus 14 head fit tightly, therefore the two shape needs to closely cooperate.In this case, needle stand 12 is when the afterbody by urceolus 14 enters and finally coordinates with the window 1400 being positioned at head, and fixture block 1222 can be sandwiched between the head inwall of arcuated fin piece 1220 and urceolus 14, hinders the movement of needle stand 12.
In order to reduce the obstruction degree of fixture block 1222 pairs of needle stands 12 movement, preferably, fixture block 1222 is set to triangle at the axial cross section of needle tubing 10, its side is towards the lateral wall of arcuated fin piece 1220, side is towards the head of needle stand 12, and opposite side is towards the afterbody of needle stand 12; Fixture block 1222 is obtuse angle towards the angle of the side of needle stand 12 head and arcuated fin piece 1220 head.
So just, the obstruction of fixture block 1222 can be reduced, reduce the mobile difficulty of needle stand 12.
Meanwhile, in order to make the more tight of the downside clamping of fixture block 1222 and window 1400, fixture block 1222 towards needle stand 12 afterbody side also with the angle of the afterbody of the arcuated fin piece 1220 at its place below 90 °.
Angle less fixture block 1222 clamping tighter, but reduce angle fixture block 1222 and the more difficult disengaging of window 1400, the power that medical personnel are applied to lower laminate 1402 is also larger, operates and also just becomes more difficult.Therefore, general employing right angle or approximate right angle, to reaching best poised state.
In order to more be convenient to be pressed in urceolus 14 by fixture block 1222, also can arrange briquetting 1404 in lower laminate 1402 towards the side of window 1400, briquetting 1404 is relative with fixture block 1222.
The effect of screens parts 16 prevents needle stand 12 from being departed from by the afterbody of urceolus 14, but need when mounted to be loaded by the afterbody of urceolus 14 due to needle stand 12, if therefore screens parts 16 and urceolus are set to integrative-structure, will certainly increase the installation difficulty of needle stand 12.And because needle tubing 10 tail end of blood taking tube generally all adopts tail end cutting edge is set and the mode of overlapping blood resistance unit 18 encapsulates, if therefore the assembly difficulty of needle stand 12 is comparatively large, blood resistance unit 18 may be caused to be punctured the situation of damage by tail end cutting edge, the more serious situation that assembly crewman also may occur and stabbed by tail end cutting edge.
Therefore, in order to reduce the assembly difficulty of needle stand 12, reduce the occurrence probability of above-mentioned situation, preferably, as shown in Figure 5, screens parts 16 comprise interior hoop 160; Interior hoop 160 can be inserted by the afterbody of urceolus 14, and fixes with urceolus 14.Just can first needle stand 12 be loaded in urceolus in assembling process like this, interior hoop 160 be inserted the afterbody of urceolus afterwards.
When taking a blood sample, vacuum test tube needs to be stretched into by the afterbody of urceolus 14, and owing to being provided with interior hoop 160 in urceolus 14, therefore vacuum test tube also needs through interior hoop 160 after the afterbody stretching into urceolus 14.If interior hoop 160 is as the middle part of urceolus 14, then vacuum test tube is easy to block with the edge of interior hoop 160, inner space now due to urceolus 14 is narrow and small, and sight line is not good, and medical personnel are difficult to vacuum test tube be adjusted to center fast and pass interior hoop 160.So just, the prolongation of operating time can be caused.
In order to overcome the problems referred to above, the afterbody of interior hoop 160 can be made to flush with the afterbody of urceolus 14.Like this, medical personnel only need carry out centering when loading vacuum test tube outside urceolus 14, in just can directly being inserted by vacuum test tube afterwards in hoop 160, therefore avoid and adjust vacuum test tube in urceolus 14, reduce operation easier, shorten the operating time.
Because the afterbody of needle tubing 10 is also very sharp, also likely puncture human body, therefore, the afterbody of needle tubing 10 also can be limited within urceolus 14 by the mode lengthening interior hoop 160 length.
In addition, the mode also by arranging chamfering or inclined-plane on interior hoop 160 reduces the insertion difficulty of vacuum test tube further.
In order to both can be made to combine closely, snap ring 162 can be set in the lateral wall circumference of interior hoop 160; The medial wall of urceolus 14 arranges the draw-in groove 144 coordinated with snap ring 162.
Snap ring 162 can arrange monolayer, also can arrange multilamellar.Can be the domain, also can be set to semi-ring or be surrounded by multiple spot.Ejected by the afterbody of needle stand 12 by urceolus 14 to prevent interior hoop 160, the afterbody that snap ring 162 can be set to inwardly hoop 160 tilts, what snap ring 162 so not only can be made to be combined with draw-in groove 144 is tightr, can also reduce snap ring 162 simultaneously and insert the resistance that urceolus 14 brings to interior hoop 160.
When taking a blood sample, medical personnel generally pinch with hands the both sides force that urceolus 14 is positioned at cutting edge 102 front and the back side, therefore in order to increase the frictional force between finger and urceolus 14, reduce operation easier, the position in the front and the back side that can be positioned at cutting edge 102 at the outer wall of urceolus 14 all arranges damper portion 145, and damper portion 145 can increase damped coefficient by the mode arranging many bands 146.So just, the damped coefficient between finger and urceolus 14 effectively can be increased, increasing friction force.
In order to vacuum test tube can be made more to go deep in urceolus 14, the tail end being convenient to needle tubing 10 thrusts, and also can arrange the handle 147 of abduction at the afterbody of urceolus.Such medical personnel can catch on handle 147 with referring to middle finger, are then pushed in urceolus 14 by vacuum test tube with thumb.
Same, according to the custom of medical personnel, general handle 147 only need extend to the front of cutting edge 102 and the back side.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for a person skilled in the art, this utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a safe blood-taking needle, is characterized in that, comprises needle tubing, needle stand and urceolus;
Described needle stand comprises the blood back form be made up of transparent material and the limit assembly for limiting described syringe location;
Described needle tubing passes described blood back form and is fixedly connected with it; The described needle tubing part be positioned within described blood back form is provided with blood outlet;
One end of described blood back form and described needle tubing can be passed by the head of described urceolus, and one end that described needle tubing stretches out described urceolus is provided with the cutting edge of inclination; The head of described urceolus is provided with the Control Component coordinated with described limit assembly;
The afterbody of described urceolus is provided with the screens parts for stoping described needle stand to be departed from by the afterbody of described urceolus.
2. safe blood-taking needle according to claim 1, is characterized in that,
The part that described needle tubing is positioned at described blood back form disconnects;
Or
Described needle tubing is positioned at the surface perforate of described blood back form.
3. safe blood-taking needle according to claim 1 and 2, is characterized in that,
Described limit assembly comprises the afterbody of multi-disc by described blood back form to the arcuated fin piece of oblique rear abduction; The lateral wall of wherein arcuated fin piece described in a slice is provided with fixture block;
The head of described urceolus is tapered, and its tip arranges projection; The inner hollow of described projection, its end face offers spacing hole; Described blood back form can be passed by described spacing hole, and described arcuated fin piece can fit tightly with the inner portion of described urceolus, and its afterbody extends to the middle part of described urceolus; Arrange elasticity part in described projection, the two ends of described elasticity part offset with the head of described end face and described arcuated fin piece respectively;
Described Control Component comprises the window of the head being arranged on described urceolus; Lower laminate is coated with outside described window; One end of described lower laminate is connected with the head tip of described urceolus; Described fixture block can be stuck in the lower edge of described window.
4. safe blood-taking needle according to claim 3, is characterized in that, described arcuated fin piece is two panels, and lays respectively at front and the back side of described cutting edge; Described fixture block be arranged on be positioned at described cutting edge front described arcuated fin piece on.
5. safe blood-taking needle according to claim 3, it is characterized in that, described fixture block is triangle at the axial cross section of described needle tubing, and its side is towards the lateral wall of described arcuated fin piece, side is towards the head of described needle stand, and opposite side is towards the afterbody of described needle stand;
Described fixture block is obtuse angle towards the angle of the side of described needle stand head and described arcuated fin piece head.
6. safe blood-taking needle according to claim 5, is characterized in that, described lower laminate is provided with briquetting towards the side of described window, and described briquetting is relative with described fixture block.
7. safe blood-taking needle according to claim 1, is characterized in that, described screens parts comprise interior hoop; Described interior hoop can be inserted by the afterbody of described urceolus, and fixes with described urceolus.
8. safe blood-taking needle according to claim 7, is characterized in that, the afterbody of described interior hoop flushes with the afterbody of described urceolus.
9. safe blood-taking needle according to claim 7, is characterized in that, the lateral wall circumference of described interior hoop is provided with snap ring; The medial wall of described urceolus is provided with the draw-in groove coordinated with described snap ring.
10. safe blood-taking needle according to claim 1, is characterized in that, the position in front and the back side that the outer wall of described urceolus is positioned at described cutting edge is provided with damper portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456052.5U CN204033353U (en) | 2014-08-13 | 2014-08-13 | Safe blood-taking needle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420456052.5U CN204033353U (en) | 2014-08-13 | 2014-08-13 | Safe blood-taking needle |
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| CN204033353U true CN204033353U (en) | 2014-12-24 |
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| CN201420456052.5U Expired - Lifetime CN204033353U (en) | 2014-08-13 | 2014-08-13 | Safe blood-taking needle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107049336A (en) * | 2017-02-28 | 2017-08-18 | 靖西市秀美边城农业科技有限公司 | Arteria hemostix |
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2014
- 2014-08-13 CN CN201420456052.5U patent/CN204033353U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107049336A (en) * | 2017-02-28 | 2017-08-18 | 靖西市秀美边城农业科技有限公司 | Arteria hemostix |
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| GR01 | Patent grant | ||
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Granted publication date: 20141224 |
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| CX01 | Expiry of patent term |