CN103549964A - Disposable hemostix - Google Patents
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- CN103549964A CN103549964ACN201310578226.5ACN201310578226ACN103549964ACN 103549964 ACN103549964 ACN 103549964ACN 201310578226 ACN201310578226 ACN 201310578226ACN 103549964 ACN103549964 ACN 103549964A
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Abstract
Description
Technical field
The present invention relates to medical blood taking instrument field, be specifically related to a kind of disposable blood taking device.
Background technology
During blood test, often need to carry out blood sample collection program; Carry out at present blood sampling and often adopt blood collection needle pin or disposable blood taking needle.The aspects such as disposable blood taking needle is preventing patient or crowd's mutual infection, easy to use have larger advantage, comparatively general in clinical use at present, the sampling of especially special population being taken a blood sample as child waits.When automatic blood-taking needle is used, only blood taking needle need be pressed close to the skin of user and take a blood sample, can carry out one-handed performance.Adopt automatic blood-taking needle blood sampling than blood collection needle method blood sampling time shorten in average 1.5min, improved work efficiency, alleviated patient's psychological burden.And automatic blood-taking needle is small and exquisite, convenient, be easy to carry about with one, the convenient blood sampling examination that carries out under various environment.
Due to these advantages of automatic blood-taking needle, in actual life, the employing of automatic blood-taking needle is more and more extensive.The form of disposable blood taking needle is varied at present, this class blood taking needle is generally formed by housing, blood taking needle, stage clip and guide frame, general stage clip is arranged on blood taking needle rear end, described blood taking needle generally adopts position limiting structure clamping to make blood taking needle rear end stage clip keep compressive state and accumulation of energy, so just form the ejection mechanism of blood taking needle, guiding mechanism generally arranges gathering sill by housing inner side and guide pad cooperation is set on needle core of blood taking needle and forms shooting guide frame.
In prior art, Chinese patent ZL03221437.5 discloses a kind of self-locking type disposable safe automatic blood-taking needle on June 9th, 2004, comprise shell, end cap, nook closing member, stage clip, push away hair device and block, on end cap, in shell, have a pair of elastic claw, this elastic claw utilize grab and chucking power by nook closing member both sides pick up the ears block; Push away hair device and adopt on the one hand inclined-plane to meet two elastic claws head-on to force it to break off relations, coordinates formation to shoot guide frame on the other hand by the gathering sill of long foot inner side with the feather key on nook closing member, this guide frame and elastic clip structure are decussation layout; Setly on nook closing member from locking face, after shooting, form a structure that prevents horizontal reset on nook closing member with grab bottom.Yet, in use find, due to being equipped with of feather key and gathering sill, make blood taking needle can be subject to the impact of frictional force in ejection travel, effect is launched in impact; In addition, when rear end stage clip discharges, the direction of ejection of blood taking needle is not direction with gathering sill and feather key when consistent, can cause that blood taking needle is stuck can not be used, and even more serious consequence likely causes the injury to person of blood collecting; In addition, the block adopting in this patent and needle core of blood taking needle carry out nature fastening, and the joint portion of itself and nook closing member is not sealed and matched, and cause this blood taking needle before blood sampling operation to be easily contaminated by bacterial, and affect the result of blood sampling examination.
In addition, because the employing of automatic blood-taking needle in actual life is more and more, use while particularly diabetics being carried out to blood sugar monitoring, measure blood sugar level in blood samples of patients (BGL), the result that records BGL contributes to find its rule, to determine insulin dose and make adjusting for the different phase of comings and goings and growth.The detection of blood SA need to puncture the skin tips such as finger tip and get a little blood.Generally need one with the Finger sting apparatus of blood taking needle.When using, with blood taking needle, puncture blood capillary, after blood flows out naturally, the blood of drawing aequum with micropipet is standby.
In prior art, disclosed Chinese patent ZL01244520.7 discloses a kind of cap-covering type safety automatic blood-taking needle on March 26th, 2002; comprise housing, blood taking needle and stage clip; in housing, be provided with ejection chamber; blood taking needle and stage clip are placed in ejection chamber and on direction of ejection, connect into elastic sliding structure; housing is provided with the needle outlet consistent with direction of ejection; blood taking needle and case side between in stage clip compressed path, be provided with card and penetrate structure; the head of blood taking needle is provided with protection sleeve; one end of protection sleeve is socketed in blood taking needle head, and the other end stretches out from needle outlet.When this invention is taken a blood sample, blood vessel local compression blood sampling effect is undesirable, and in this invention, blood taking needle splits with protection sleeve and blood taking needle, during use, by pulling out protection sleeve, just can effectively take a blood sample.
In addition, because blood taking needle adopts protection sleeve, protect, needle core of blood taking needle, in air ambient, can make needle core of blood taking needle be infected with more antibacterial, during blood sampling, to patient, brings infection, even has influence on blood glucose, ketoboidies value.As before taking a blood sample, blood sampling nook closing member is cleaned or disinfection, can greatly increase medical personnel's workload, in actual life, also bring inconvenience.And a lot of automatic blood-taking needles is disposable, its nook closing member position is hidden in automatic blood sampling needle construction, is difficult to nook closing member to do sterilization comparatively thoroughly, guarantees the sterile working of nook closing member.
Meanwhile, due to the diversity of individual human, the reason such as skin thickness is different, even for a people, blood need to gather from the different parts of human body, therefore need to regulate continually blood taking needle to thrust the degree of depth of skin.If the thrusting the degree of depth and cannot regulate all the time of blood taking needle, will cause thrusting the degree of depth not or thrust too deeply and causing damage to person of blood collecting of pin.Some blood collecting pens can regulate and thrust skin depth, but adjusting portion separation structure is complicated, and part is many, and processing installation process is complicated, and manufacturing cost is higher.
The present invention comes therefrom.
Summary of the invention
The present invention seeks to: for the problems referred to above; a kind of disposable blood taking device is provided; to solve hemostix guiding mechanism in prior art, unreasonable blood taking needle can not take a blood sample or the take a blood sample problem of poor effect that causes is set; also solve in prior art that the ineffective blood that causes taking a blood sample of blood taking needle protection subjects to pollute, needle core of blood taking needle need to carry out the problem that could use after cleaning-sterilizing aseptic process, also solved the technical problem that the degree of depth cannot regulate of thrusting of blood taking needle in prior art simultaneously.
Technical scheme of the present invention is: described disposable blood taking device, comprise housing, the through hole connecting before and after having in this housing, the rear end of described housing is fixed with the holder stretching in described through hole, on described holder, there is clamp port, and in this clamp port, clamp the blood taking needle stretching out before oriented; The nook closing member that described blood taking needle comprises needle stand and is fixed on this needle stand front end, is folded with between described blood taking needle and holder to blood taking needle and applies the stage clip of elastic force forward; In the through hole of described housing, be also provided with and described clamp port can be opened to allow the hair device that pushes away that blood taking needle discharges from clamp port, this front end that pushes away hair device stretches out hull outside;
It is characterized in that: described in push away hair device front end be connected with that one that stretch out forward and front and back position is adjustable goes out syringe, push away hair device and be shaped with the ejection chamber for blood taking needle ejection operation with the inside that goes out syringe, the front end that goes out syringe is provided with the needle outlet being connected with described ejection chamber, come in and go out for needle core of blood taking needle; Described nook closing member is provided with and is enclosed within its outer nook closing member sleeve, between this nook closing member sleeve and needle stand, by easily twisting off material, is fixedly connected with, and the front end of nook closing member sleeve is connected with the drive block that twists off stretching out outside housing.
The described front end that pushes away hair device is shaped with external screw thread, described in go out syringe rear end be shaped with female thread, described in push away hair device and go out between syringe and be connected by described internal and external threads.
The described externally threaded pitch of hair device front end that pushes away is 1mm.
On the described outer wall that goes out syringe, be shaped with the friction rib of being convenient to it to be rotated.
Described holder comprises firm banking, and the front end of this firm banking is fixedly installed two elastic clips that stretch out forward, the described clamp port of the common formation of these two elastic clips; The needle stand of described blood taking needle is between described two elastic clips, and described stage clip is folded between needle stand and firm banking and to needle stand and applies elastic force forward; The front end of described two elastic clips is provided with to projecting inward spacing lug, and described needle stand is provided with limited block, and described spacing lug is against described limited block front side to stop needle stand to skid off outside clamp port forward under the elastic force effect of stage clip.
The rear end of described two elastic clips is all shaped with outwardly buckle, on the through hole hole wall of described housing, is shaped with the lock dog matching with described buckle, between described holder and described housing, by described buckle and lock dog, is fixed.
Described needle stand is provided with the guide pad that is positioned at described limited block front side, and described guide pad and described ejection chamber match to locate the direction of ejection of described blood taking needle.
Through hole in described housing is circular hole.
Advantage of the present invention is:
1, the present invention this disposable blood taking device push away hair device front end by internal and external threads connected front and back position adjustable go out syringe, this goes out the catapulting distance that syringe can change blood taking needle turn, and then changes the degree of depth of thrusting of blood taking needle.
2, feather key and gathering sill with matching are not set as blood taking needle of the prior art on the blood taking needle of this disposable blood taking device of the present invention, while having avoided keyway to coordinate, the stuck and blood taking needle of common blood taking needle launches the generation of situations such as being obstructed.In the design, the structure of blood taking needle adapts with the ejection chamber pushing away in hair device, makes ejection chamber and blood taking needle matched in clearance, when guaranteeing that blood taking needle launches blood sampling operation, makes it in ejection travel, reduce the impact of periphery factor.
3, this disposable blood taking device of the present invention arranges stage clip between the fixed base frame of holder and blood taking needle, and during use, blood taking needle is because the release of accumulation of energy stage clip is launched out needle outlet and punctured blood sampling site; When stage clip is elongated to the longest position, factor due to stage clip elastic return, blood taking needle needle stand moves forward and departs from clamp port, thereby the spacing fin on elastic clip front end inclined-plane is arranged in needle stand rear side, has stopped after blood taking needle and move and again enter clamp port, effectively prevented the secondary utilization of this hemostix.
4, on the blood taking needle needle stand of this disposable blood taking device of the present invention, guide pad is set, unlike the prior art this guide pad only with ejection chamber matched in clearance, chamfered is carried out in the junction that even guide pad coordinates with ejection chamber, reduce frictional force between guide pad and ejection chamber, make again it keep good guide effect.The locking hemostix that is clasped on housing upper locking piece and elastic clip, makes it be assembled into overall structure; Push away hair device and stretch out forward the outer and end of housing and set out pin hole, when user is used, can drive comparatively easily after pushing away hair device and move.
5, this disposable blood taking device of the present invention is by sheathed nook closing member sleeve on nook closing member, nook closing member sleeve is fixedly connected with blood taking needle needle stand by easily twisting off material, thereby guaranteed blood taking needle before use, nook closing member keeps gnotobasis while using, and prevents the germ contamination before blood sampling, has reduced detection error.
6, the blood taking needle of this disposable blood taking device of the present invention and nook closing member sleeve are fixed as one, and easily twisting twist off drive block and nook closing member sleeve is Split type structure.Adopt Split type structure conveniently to carry out the industrial processes of blood taking needle, reduce the fussy degree of follow-up assembly working.And that one end that this nook closing member sleeve socket part is connected with connecting portion is airtight, the other end is fixedly connected with blood taking needle pedestal, reduces the probability of environmental pollution nook closing member.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the structural representation of embodiment of the present invention disposable blood taking device;
Fig. 2 is the exploded view of embodiment of the present invention disposable blood taking device;
Fig. 3 be embodiment of the present invention disposable blood taking device middle shell axially make figure;
Fig. 4 is the structural representation that pushes away hair device in embodiment of the present invention disposable blood taking device and go out syringe while being assembled together;
Fig. 5 pushes away the front view of hair device in embodiment of the present invention disposable blood taking device;
Fig. 6 is the upward view of Fig. 5;
Fig. 7 goes out the structural representation of syringe in embodiment of the present invention disposable blood taking device.
Wherein: 1-housing, 11-lock dog, 12-through hole;
2-holder, 21-firm banking, 22-elasticity jig arm, 23-clamp port, the spacing lug of 24-, 25-buckle, 26-inclined-plane, the spacing fin of 27-;
3-blood taking needle, 31-needle stand, 32-nook closing member, 33-limited block, 34-guide pad;
4-stage clip;
5-pushes away hair device, 51-external screw thread, 52-clapboard, 53-connecting plate;
6-nook closing member sleeve, 61-socket part, 62-connecting portion, 63-fixture block;
7-twists off drive block, and 71-connects pullover, and 72-manages portion, 73-hole clipping.
8-goes out syringe, 81-needle outlet,
9-ejection chamber.
The specific embodiment
As depicted in figs. 1 and 2, this disposable blood taking device that the present embodiment provides, comprises thehousing 1 of a drum, themanhole 12 connecting before and after having in housing 1.The rear end of describedhousing 1 is fixed with holder 2, and the front portion of this holder 2 is stretched in the through hole of housing 1.On holder 2, be provided with and in clamp port 23 and this clamp port 23, clamp the blood taking needle 3 stretching out before oriented.It is outer that clamp port 23 is stretched out at the tip that described blood taking needle 3 comprisesneedle stand 31 and is fixed on nook closing member 32(nookclosing member 32 front portions of this needle stand front end), and being folded withstage clip 4 between blood taking needle 3 and holder 2, thisstage clip 4 applies elastic force forward (thereby holder 2 clamp blood taking needle 3 make stage clip between the two in pressurized energy accumulating state) to blood taking needle 3.In the through hole of describedhousing 1, be also equipped with and described clamp port 23 can be opened to allow that blood taking needle 3 discharges from clamp port pushes awayhair device 5, this front end that pushes awayhair device 5 stretches outhousing 1 outside.
The key improvements of the present embodiment is: as Fig. 1 and Fig. 2, the described front end that pushes awayhair device 5 be connected with one stretch out forward go outsyringe 8, and this front and back position that goes outsyringe 8 is adjustable, push awayhair device 5 and be shaped with theejection chamber 9 for blood taking needle 3 ejection operations with the inside that goes outsyringe 8, the front end that goes outsyringe 8 is provided with and is connected with describedejection chamber 9, the needle outlet 81(coming in and going out for needle core ofblood taking needle 32 is as Fig. 5), the size of thisneedle outlet 81 is less than the size ofneedle stand 31, thereby needlestand 31 can be limited in to needleoutlet 81 rear sides and stop whole blood taking needle to eject needle outlet completely and injure person of blood collecting outward.Adopt after this structure, user just can change the distance between blood taking needle 3 andneedle outlet 81 by adjusting the front and back position ofsyringe 8, has also changed the catapulting distance of blood taking needle 3, thus the degree of depth that regulates nook closing member to thrust skin.
The above-mentioned concrete assembly relation that goes outsyringe 8 and push away betweenhair device 5 is as follows: as shown in Figure 4 and Figure 6, the front end that pushes awayhair device 5 is shaped withexternal screw thread 51, the inside, rear end that goes outsyringe 8 is shaped with female thread (not shown in FIG.), pushes awayhair device 5 and go out betweensyringe 8 being connected by described internal and external threads.So, only need rotate outsyringe 8 just can change and the front and back position of syringe.
As shown in Figure 7, in order to allow medical worker's turn easily go outsyringe 8, this example is also shaped withmany friction ribs 82 on the outer wall that goes outsyringe 8.
The described externally threaded pitch ofhair device 5 front end that pushes away is generally 1mm the best, and this example is provided with four gear stuck points between described internal and external threads, these four gear stuck points carry out the quartering by each circle screw thread, often will go outsyringe 8 and rotate 1/4th circles, the catapulting distance of blood taking needle 3 will increase/reduce 0.25mm.
Refer again to shown in Fig. 1 and Fig. 2, nookclosing member 32 is provided with and is enclosed within its outer nookclosing member sleeve 6, between this nookclosing member sleeve 6 andneedle stand 31, by easily twisting off material, be fixedly connected with, thereby the tip that makes nookclosing member 32 is in the confined space that nook closing member sleeve 6 and needle stand 31 form, and avoids the pollution of external environment.In order to facilitate this hemostix in use, user can be turned round nookclosing member sleeve 6 easily fromneedle stand 31, and the special front end at nookclosing member sleeve 6 of this example is connected with to stretch out and twists offdrive block 7 outsidehousing 1.
Said 'fornt', 'back' in the present embodiment, is to take Fig. 1 as reference, is parallel to paper upwards for front, after being parallel to paper and being downwards.
The detailed structure of described holder 2 can be with reference to shown in Fig. 2, and it comprises afirm banking 21, and the front end of this firm banking is fixedly installed two elastic clips that stretch out forward 22, the described clamp port 23 of this two elastic clips, 22 common formation.The needle stand 31 of described blood taking needle 3 is between described twoelastic clips 22, and describedstage clip 4 is folded betweenneedle stand 31 andfirm banking 21 and to needle stand 31 and applies elastic force forward.The front end of twoelastic clips 22 is provided with to projecting inwardspacing lug 24, and describedneedle stand 31 is provided withlimited block 33, and described spacing lug is against described limited block front side to stopneedle stand 31 to skid off forward outside clamp port 23 under the elastic force effect ofstage clip 4.
In the present embodiment, fixed form between described holder 2 and describedhousing 1 is for being fixed, specifically can be with reference to shown in Fig. 2 and Fig. 3: the rear end of described twoelastic clips 22 is all shaped with outwardlybuckle 25, on the through hole hole wall of describedhousing 1, be shaped with thelock dog 11 matching with describedbuckle 25, between described holder 2 and describedhousing 1, by describedbuckle 25 and lock dog, be fixed.During assembling, the elastic clip of holder 2front portions 22 is inserted inhousing 1 apertures, rear end, push away before firmly, makebuckle 25 on holder 2 snap in the lock dog front side ofhousing 1, holder 2 andhousing 1 can be fixed together.
In addition, this example is also provided with theguide pad 34 that is positioned at describedlimited block 33 front sides on describedneedle stand 31, describedguide pad 34 and describedejection chamber 9 match to locate direction of ejection (guide pad 34 and the little matched in clearance ofejection chamber 9 of described blood taking needle 3, can relative sliding between the two), thereby with the generation of the phenomenon of avoiding the direction of motion when launching of blood taking needle 3 to depart from causing taking a blood sample.And chamfered has also been carried out in the junction that this example coordinates withejection chamber 9 atguide pad 34, has both reduced the frictional force between guide pad and ejection chamber, make again it keep good guide effect.
Shown in Fig. 2, the front end of describedelastic clip 22 is shaped with inclined-plane 26.The described detailed structure that pushes awayhair device 5 is as shown in Figure 2, Figure 5 and Figure 6: it comprise the two clapboard 52(clapboards 52 that match with described inclined-plane 26 have with housing in the curved wall that fits of manhole, as Fig. 5) and be connected in two connectingplates 53 between these two clapboards, described two clapboards 52 and the common part that forms describedejection chamber 9 of two connecting plates 53.Pushing awayhair device 5 can be in the interior slip ofhousing 1, but owing to being subject to spacing preiection (not shown in FIG.) effect ofhousing 1 place, front end aperture setting, push awayhair device 5 and can not integral body skid offforward housing 1 outside (size of fore-end that pushes away hair device is less, only this part to stretch out housing outer) completely, as Fig. 1.And on the inclined-plane 26 of describedelastic clip 22 front ends, be also shaped with thespacing fin 27 perpendicular to blood taking needle direction of ejection, as Fig. 3.
In the present embodiment, the detailed structure of described nookclosing member sleeve 6 as shown in Figure 5, it comprise thesocket part 61 that is enclosed within outside nookclosing member 32 and with the connectingportion 62 that twists offdrive block 7 and be fixedly connected with.Describedsocket part 61 is hollow circular tube structure, and its one end and described connectingportion 62 are connected as a single entity, and the other end and blood taking needle needle stand 31 easily twist off by described that material is airtight is fixedly connected with (and being integral), and the described material that easily twists off is PE material.Blood taking needle 3 is made integral structure with nookclosing member sleeve 6 when producing, thereby has guaranteed that this disposable blood taking device had just suffered in gnotobasis all the time before assembling.
In the present embodiment, nookclosing member sleeve 6 and twist off concrete connected mode betweendrive block 7 can be with reference to shown in Fig. 4 and Fig. 5: connectingportion 6 is provided withfixture block 63; Twist offdrive block 7 one end and arrange and connect pulloverly 71,portion 72 is managed in other end setting, connectspullover 71 and is provided with hole clipping 73.Described connectingportion 62 inserts in describedconnections pullover 71, and in thehole clipping 73 on 63 Snap joints of the fixture block on connectingportion 62pullover 71, thus by nookclosing member sleeve 6 with twist offdrive block 7 and be fixed together.
Now in conjunction with Fig. 1; the operation principle of this disposable blood taking device of the present embodiment is described below: when this disposable blood taking device is during in original state; nookclosing member sleeve 6 is enclosed within outside needle core ofblood taking needle 32 and is connected to one by easily twisting off material with blood taking needle needle stand 31; thereby protection nookclosing member 32 is not by outside contamination; and the effect withelastic clip 22upper limit lugs 24 bylimited block 33, thestage clip 4 at blood taking needle 3 rears is compressed spacing.When needs are taken a blood sample, thereby grasp, twist offdrive block 7 and rotate to twist off nookclosing member sleeve 6 and with the coupling part of blood taking needle 3, nookclosing member sleeve 6 andneedle stand 31 are separated, now in the exposed air ambient inhousing 1 of needle core ofblood taking needle 32 and in serviceable condition.Then the front end of this hemostix is aimed at and needed the human body of blood sampling (as the blood vessel medically often adopting) gently to press forward, during light pressure human body, people knows from experience this hemostix generation counteracting force backward, and this counteracting force promotes out backwardsyringe 8 and pushes away the exposed front end inhousing 1 outside of hair device 5.Go outsyringe 8 and push awayhair device 5 to be subject to the backward rear movement of human body counteracting force, themobile hair device 5 that pushes away coordinates promotionelastic clip 22 to open to both sides by inclined-plane backward, thereby makes blood taking needle needle stand 31 no longer be subject to thespacing lug 24 of clamp port 23()restriction.Stage clip 4 in compress energy storage state will promote blood taking needle 3 and launch away forward alongejection chamber 9, make nookclosing member 32 tips of blood taking needle 3 stretch outneedle outlet 81 outward and puncture human vas, play the object of blood sampling, the size ofneedle stand 31 is larger thanneedle outlet 81 sizes, soneedle stand 31 is blocked inneedle outlet 81 rear sides and in ejection chamber 9.Complete when taking a blood sample,stage clip 4 is due to elastic return, make blood taking needle be returned to stage clip and unclamp level, due toelastic clip 22 elastic return, blood taking needle needle stand 31 moves forward and departs from clamp port 23, thereby the spacingfin 27 on inclined-plane 26 is arranged inneedle stand 31 rear sides, has stopped after blood taking needle 3 and move and again enter clamp port 23, also just prevented the secondary utilization of this hemostix.
Certainly, above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow people can understand content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformation or modification that according to the present invention, the spirit of main technical schemes is done, within all should being encompassed in protection scope of the present invention.
Claims (8)
1. a disposable blood taking device, comprises housing (1), the through hole connecting before and after having in this housing (1); The rear end of described housing (1) is fixed with the holder (2) stretching in described through hole, has clamp port (23) on described holder (2), and the blood taking needle (3) that in this clamp port (23), clamping is stretched out before oriented; The nook closing member (32) that described blood taking needle (3) comprises needle stand (31) and is fixed on this needle stand front end, is folded with to blood taking needle (3) and applies the stage clip of elastic force (4) forward between described blood taking needle (3) and holder (2); In the through hole of described housing (1), be also provided with and described clamp port (23) can be opened to allow that blood taking needle (3) discharges from clamp port pushes away hair device (5), this front end that pushes away hair device (5) stretches out housing (1) outside;
It is characterized in that: described in push away hair device (5) front end be connected with that one that stretch out forward and front and back position is adjustable goes out syringe (8), the inside that pushes away hair device (5) and go out syringe (8) is shaped with the ejection chamber (9) for blood taking needle (3) ejection operation, and the front end that goes out syringe (8) is provided with the needle outlet (81) being connected with described ejection chamber (9), come in and go out for needle core of blood taking needle (32); Described nook closing member (32) is provided with and is enclosed within its outer nook closing member sleeve (6), between this nook closing member sleeve (6) and needle stand (31), by easily twisting off material, be fixedly connected with, the front end of nook closing member sleeve (6) be connected with stretch out housing (1) outward twist off drive block (7).
2. disposable blood taking device according to claim 1, it is characterized in that: described in push away hair device (5) front end be shaped with external screw thread, the described rear end that goes out syringe (8) is shaped with female thread, described in push away hair device (5) and go out between syringe (8) and be connected by described internal and external threads.
3. disposable blood taking device according to claim 2, is characterized in that: described in to push away the externally threaded pitch of hair device (5) front end be 1mm.
4. disposable blood taking device according to claim 2, is characterized in that: described in go out on the outer wall of syringe (8) to be shaped with the friction rib (82) of being convenient to it to be rotated.
5. disposable blood taking device according to claim 1, it is characterized in that: described holder (2) comprises firm banking (21), the front end of this firm banking is fixedly installed two elastic clips that stretch out forward (22), and these two elastic clips (22) form described clamp port (23) jointly; The needle stand (31) of described blood taking needle (3) is positioned between described two elastic clips (22), and described stage clip (4) is folded between needle stand (31) and firm banking (21) and to needle stand (31) and applies elastic force forward; The front end of described two elastic clips (22) is provided with to projecting inward spacing lug (24), described needle stand (31) is provided with limited block (33), and described spacing lug is against described limited block front side to stop needle stand (31) to skid off forward outside clamp port (23) under the elastic force effect of stage clip (4).
6. disposable blood-taking device according to claim 5, it is characterized in that: the rear end of described two elastic clips (22) is all shaped with outwardly buckle (25), on the through hole hole wall of described housing (1), be shaped with the lock dog (11) matching with described buckle (25), between described holder (2) and described housing (1), by described buckle (25) and lock dog (11), be fixed.
7. disposable blood-taking device according to claim 5, it is characterized in that: described needle stand (31) is provided with the guide pad (34) that is positioned at described limited block (33) front side, described guide pad (34) and described ejection chamber (51) match to locate the direction of ejection of described blood taking needle (3).
8. disposable blood taking device according to claim 1, is characterized in that: the through hole in described housing (1) is circular hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310578226.5ACN103549964A (en) | 2013-11-15 | 2013-11-15 | Disposable hemostix |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310578226.5ACN103549964A (en) | 2013-11-15 | 2013-11-15 | Disposable hemostix |
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| CN103549964Atrue CN103549964A (en) | 2014-02-05 |
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| CN201310578226.5APendingCN103549964A (en) | 2013-11-15 | 2013-11-15 | Disposable hemostix |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107405119A (en)* | 2015-01-20 | 2017-11-28 | 广州市健之堂医疗器械有限公司 | A safety blood collection needle structure |
| EP3434186A4 (en)* | 2016-03-21 | 2019-09-11 | Sterilance Medical (Suzhou) Inc. | IMPROVED DISPOSABLE NEEDLE FOR BLOOD TAKING WITHOUT DANGER AT ADJUSTABLE PERFORATION DEPTH |
| CN111214246A (en)* | 2019-09-26 | 2020-06-02 | 天津华鸿科技股份有限公司 | Blood taking pen and needle seat for blood taking needle |
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| CN201394021Y (en)* | 2009-03-04 | 2010-02-03 | 柳新荣 | Disposable automatic blood sampling device |
| CN201481433U (en)* | 2009-08-10 | 2010-05-26 | 柳新荣 | Split device for protecting needle core of blood taking needle |
| US20120172759A1 (en)* | 2010-12-30 | 2012-07-05 | Roche Diagnostics Operations, Inc. | Handheld Medical Diagnostic Devices With Lancing Depth Control |
| CN203609428U (en)* | 2013-11-15 | 2014-05-28 | 柳新荣 | Disposable hemostix |
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| CN107405119A (en)* | 2015-01-20 | 2017-11-28 | 广州市健之堂医疗器械有限公司 | A safety blood collection needle structure |
| CN107405119B (en)* | 2015-01-20 | 2020-06-16 | 广州市健之堂医疗器械有限公司 | A safety lancet structure |
| EP3434186A4 (en)* | 2016-03-21 | 2019-09-11 | Sterilance Medical (Suzhou) Inc. | IMPROVED DISPOSABLE NEEDLE FOR BLOOD TAKING WITHOUT DANGER AT ADJUSTABLE PERFORATION DEPTH |
| CN111214246A (en)* | 2019-09-26 | 2020-06-02 | 天津华鸿科技股份有限公司 | Blood taking pen and needle seat for blood taking needle |
| CN111214246B (en)* | 2019-09-26 | 2022-09-06 | 天津华鸿科技股份有限公司 | Blood taking pen and needle seat for blood taking needle |
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