CN203647354U

CN203647354U - Transparent disposable blood sampling device

Info

Publication number: CN203647354U
Application number: CN201320759966.4U
Authority: CN
Inventors: 柳新荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-26
Filing date: 2013-11-26
Publication date: 2014-06-18
Anticipated expiration: 2023-11-26

Abstract

The utility model discloses a transparent disposable blood sampling device which comprises a shell. The transparent disposable blood sampling device is characterized in that the shell is a transparent plastic part. When the transparent disposable blood sampling device is produced or manufactured or used, a producer and a user can directly observe whether the inner structure of the blood sampling needle is complete and reasonable or not, unqualified products can be removed in time, and the productive efficiency of the blood sampling device is effectively improved.

Description

Transparent type disposable blood taking device

Technical field

This utility model relates to medical blood taking instrument field, is specifically related to a kind of transparent type disposable blood taking device.

Background technology

When 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, especially to special population as the sampling of taking a blood sample such as child.When automatic blood-taking needle uses, 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 the automatic blood-taking needle 1.5min that taken a blood sample than blood collection needle method blood sampling time shorten in average, 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 after shooting, form the structure that prevent nook closing member on horizontal reset with grab bottom from locking face.But, in use find, due to being equipped with of feather key and gathering sill, make blood taking needle in ejection travel, can be subject to the impact of frictional force, effect is launched in impact; In addition, when the direction of ejection of blood taking needle is not consistent with the direction of gathering sill and feather key in the time that rear end stage clip discharges, can cause that blood taking needle is stuck can not be used, 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 that insulin dose and the different phase for comings and goings and growth make adjusting.The detection of blood SA need to puncture the skin tips such as finger tip and get a little blood.Generally need a Finger sting apparatus with blood taking needle.In the time using, puncture blood capillary with blood taking needle, after blood flows out naturally, for subsequent use with the blood of micropipet absorption aequum.

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, when use, by pulling out protection sleeve, just can effectively take a blood sample.

In addition, protect because blood taking needle adopts protection sleeve, needle core of blood taking needle, in air ambient, can make needle core of blood taking needle be infected with more antibacterial, when blood sampling, brings infection to patient, 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.

In addition, the shell of existing blood taking needle is all opaque plastic material, and it is in the time manufacturing or use, and whether the internal structure that production and user can not directly be observed blood taking needle is complete rationally, so just can not reject in time defective work, be unfavorable for the raising of hemostix prouctiveness.

The present invention comes therefrom.

Summary of the invention

This utility model object is: for the problems referred to above, provide a kind of transparent type disposable blood taking device with higher prouctiveness.

The technical solution of the utility model is: described transparent type disposable blood taking device, comprise housing, and it is characterized in that described housing is transparent plastic.

As preferably, in described housing, there is the through hole that front and back connect; The rear end of described housing is fixed with the holder stretching in described through hole, on described holder, has clamp port, and in this clamp port, clamps the blood taking needle stretching out before oriented; Described blood taking needle comprises needle stand and is fixed on the nook closing member of this needle stand front end, be folded with stage clip, and this stage clip applies elastic force forward to blood taking needle between described blood taking needle and holder; In the through hole of described housing, be also provided with and described clamp port can be opened to allow the clamp port that blood taking needle discharges from clamp port open part, described clamp port opens that part is positioned at the front side of holder and its inside is shaped with the ejection chamber for blood taking needle ejection operation; The front end that described clamp port opens part stretches out outside housing, and be provided be connected with described ejection chamber, come in and go out for needle core of blood taking needle launch hole; 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, is fixedly connected with by easily twisting off material, and the front end of nook closing member sleeve is connected with the drive block that twists off stretching out outside housing.

As preferably, described holder comprises firm banking, and the front end of this firm banking is fixedly installed two elastic clips that stretch out forward, and these two elastic clips are common forms described clamp port; 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 forward outside clamp port under the elastic force effect of stage clip.

As preferably, 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, is fixed by described buckle and lock dog.

As preferably, 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.

As preferably, the front end of described elastic clip is shaped with inclined-plane, and described clamp port opens two clapboards that part comprises and described inclined-plane matches and is connected in two connecting plates between two clapboards, and described two clapboards and two connecting plates are common forms described ejection chamber.

As preferably, on described inclined-plane, be shaped with the spacing fin perpendicular to blood taking needle direction of ejection.

As preferably, described nook closing member sleeve comprise the socket part that is enclosed within outside nook closing member and with the connecting portion that twists off drive block and be fixedly connected with; Described socket part is hollow circular tube structure, and its one end and described connecting portion are connected as a single entity, and the other end and blood taking needle needle stand easily twist off by described that material is airtight to be fixedly connected with.

As preferably, described connecting portion is provided with fixture block; The described drive block one end that twists off arranges and connects pulloverly, and portion is managed in other end setting, connects on pullover and offers hole clipping; Described connecting portion insert described connection pullover in, and in fixture block Snap joint on the connecting portion hole clipping on pullover.

As preferably, the described material that easily twists off is PE material.

The utility model has the advantages that:

1, the housing of this disposable blood taking device of this utility model is transparent plastic, this hemostix is in the time manufacturing like this, function and quality that just can this hemostix of real-time inspection, if be equipped with again the image product check system of full-automatic identification in the time producing, just can make the prouctiveness of this hemostix be multiplied.

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 this utility model, 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.The ejection chamber that in the design, the structure of blood taking needle and clamp port open in part adapts, and makes ejection chamber and blood taking needle matched in clearance, in 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 this utility model arranges stage clip between the fixed base frame of holder and blood taking needle, and when use, blood taking needle is because the release of accumulation of energy stage clip is launched out and launched hole and puncture blood sampling site; In the time that stage clip is elongated to the longest position, due to the factor of stage clip elastic return, blood taking needle needle stand moves forward and departs from clamp port, stop after blood taking needle and move and again enter clamp port thereby the spacing fin on elastic clip front end inclined-plane is arranged in needle stand rear side, effectively prevented the secondary utilization of this blood-taking device.

4, on the blood taking needle needle stand of this disposable blood taking device of this utility model, 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 blood-taking device that is clasped on housing upper locking piece and elastic clip, makes it be assembled into overall structure; Clamp port opens part and stretches out forward the outer and end of housing and offer and launch hole, moves after can driving comparatively easily clamp port to open part when user is used.

5, this disposable blood taking device of this utility model 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, use time nook closing member keep gnotobasis, prevent the germ contamination before blood sampling, reduced detection error.

6, the blood taking needle of this disposable blood taking device of this utility model 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.Employing Split type structure conveniently carries out the industrial processes of blood taking needle, reduces 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, this utility model is further described:

Fig. 1 is the structural representation of this utility model embodiment transparent type disposable blood taking device;

Fig. 2 is the confined state structural representation of this utility model embodiment transparent type disposable blood taking device;

Fig. 3 is another confined state structural representation of this utility model embodiment transparent type disposable blood taking device;

Fig. 4 is the partial structurtes schematic diagram of this utility model embodiment transparent type disposable blood taking device;

Fig. 5 is nook closing member sleeve and the structural representation that twists off drive block in this utility model embodiment transparent type disposable blood taking device.

Wherein: 1-housing, 11-lock dog, 12-spacing preiection;

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-clamp port opens part, 51-ejection chamber, and 52-clapboard, 53-connecting plate, 54-launches hole;

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.

The specific embodiment

As shown in Figure 1, Figure 2 and Figure 3, this transparent type disposable blood taking device that the present embodiment provides, comprises a housing 1, and this housing 1 is transparent plastic, the through hole connecting before and after having in housing 1, and the cross section of this through hole is rectangular.

The rear end of described housing 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 comprises needle stand 31 and is fixed on nook closing member 32(nook closing member 32 front portions of this needle stand front end), and between blood taking needle 3 and holder 2, be folded with stage clip 4 and this stage clip 4 and apply 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.The clamp port that described clamp port 23 can be opened to allow blood taking needle 3 discharge from clamp port is also housed in the through hole of described housing 1 and opens part 5, this clamp port opens that part 5 is positioned at the front side of holder 2 and its inside is shaped with the ejection chamber 51 for blood taking needle 3 ejection operations.The front end that clamp port opens part 5 stretches out outside housing 1, and that the front end that clamp port opens part 5 is provided with is that be connected with described ejection chamber 51, come in and go out for needle core of blood taking needle 32 launch hole 54, this size of launching hole 54 is less than the size of needle stand 31, injures person of blood collecting thereby needle stand 31 can be limited in to launch hole 54 rear sides and stop whole blood taking needle to eject completely to launch outside hole.And, in the present embodiment, 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, is fixedly connected with by easily twisting off material, thereby the pollution of external environment, in the confined space that nook closing member sleeve 6 and needle stand 31 form, is avoided in the tip that makes nook closing member 32.In order to facilitate this blood-taking device in use, user can be turned round nook closing member sleeve 6 easily from needle stand 31, and this example is special to be connected with to stretch out at the front end of nook closing member sleeve 6 and to twist off drive block 7 outside housing 1.

Said 'fornt', 'back' in the present embodiment, is take Fig. 1 as reference, is parallel to paper upwards for front, after being parallel to paper and being downwards.

The detailed construction of described holder 2 can be with reference to shown in Fig. 2 and Fig. 3, and it comprises a firm 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 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 two elastic clips 22 is provided with to projecting inward spacing lug 24, and 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.

In the present embodiment, fixed form between described holder 2 and described housing 1 is for being fixed, specific as follows: 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, be fixed by described buckle 25 and lock dog 11, as Fig. 1.When assembling, the elastic clip 22 of holder 2 front portions is inserted in housing 1 aperture, rear end, firmly, push away, make buckle 25 on holder 2 snap in lock dog 11 front sides of housing 1, holder 2 and housing 1 can be fixed together, after having assembled, the firm banking 21 of holder 2 is exposed to outside housing 1.

In addition, this example is also provided with the guide pad 34 that is positioned at described limited block 33 front sides on described needle stand 31, described guide pad 34 and described ejection chamber 51 match to locate direction of ejection (guide pad 34 and ejection chamber 51 matched in clearance 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 in the time launching of blood taking needle 3 to depart from causing taking a blood sample, as Fig. 1.And chamfered has also been carried out in the junction that this example coordinates with ejection chamber 51 at guide pad 34, has reduced frictional force between guide pad and ejection chamber, make again it keep good guide effect.

In the present embodiment, the front end of described elastic clip 22 is shaped with inclined-plane 26.Described clamp port opens the detailed construction of part 5 as described in Fig. 1 and Fig. 3: it comprise with as described in two clapboards 52 that match of inclined-plane 26 and be connected in two connecting plates 53 between these two clapboards, described two clapboards 52 and two connecting plates 53 are common forms described ejection chamber 51.Clamp port opens part 5 can be in the interior slip of housing 1, but because the spacing preiection 12 that is subject to housing 1 front end aperture place setting acts on, clamp port opens part 5 and can not entirety skids off forward housing 1 outside completely (size of fore-end that clamp port opens part is less, only this part is stretched out outside housing), as Fig. 1.And on the inclined-plane 26 of described elastic clip 22 front ends, be also shaped with the spacing fin 27 perpendicular to blood taking needle direction of ejection, as Fig. 3.

In the present embodiment, the detailed construction of described nook closing member sleeve 6 as shown in Figure 5, it comprise the socket part 61 that is enclosed within outside nook closing member 32 and with the connecting portion 62 that twists off drive block 7 and be fixedly connected with.Described socket part 61 is hollow circular tube structure, and its one end and described connecting portion 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 integral), and in the present embodiment, the described material that easily twists off is PE material.In this example, blood taking needle 3 is made integral structure with nook closing member sleeve 6 in the time producing, thereby has guaranteed that this transparent type disposable blood taking device had just suffered in gnotobasis all the time before assembling.And in this example the tip of nook closing member 32 front portions with very little bending axially hook (hook power is little) in socket part 61, make close-fitting between nook closing member 32 and socket part 61, avoid very easily splitting away off the generation of situation from blood taking needle 3 because unexpected factor causes nook closing member sleeve 6, as Fig. 2.

In the present embodiment, nook closing member sleeve 6 and twist off concrete connected mode between drive block 7 can be with reference to shown in Fig. 4 and Fig. 5: connecting portion 6 is provided with fixture block 63; Twist off drive block 7 one end and arrange and connect pulloverly 71, portion 72 is managed in other end setting, connects pullover 71 and is provided with hole clipping 73.Described connecting portion 62 inserts in described connection pullover 71, and in hole clipping 73 on fixture block 63 Snap joints pullover 71 on connecting portion 62, thus by nook closing member sleeve 6 with twist off drive block 7 and be fixed together.

Now in conjunction with Fig. 1～Fig. 5; the operation principle of this present embodiment transparent type disposable blood taking device is described below: when this transparent type disposable blood taking device is during in original state; nook closing member sleeve 6 is enclosed within outside needle core of blood taking needle 32 and is connected to one by easily twisting off material with blood taking needle needle stand 31; thereby protection nook closing member 32 is not by outside contamination; and the effect with elastic clip 22 upper limit lugs 24 by limited block 33, the stage clip 4 at blood taking needle 3 rears is compressed spacing.In the time that needs are taken a blood sample, twist off drive block 7 and rotate to twist off nook closing member sleeve 6 and with the coupling part of blood taking needle 3, nook closing member sleeve 6 and needle stand 31 are separated thereby grasp, now in the exposed air ambient in housing 1 of needle core of blood taking needle 32 and in serviceable condition.Then the front end of this blood-taking device is aimed at and needed the human body of blood sampling (as the blood vessel medically often adopting) gently to press forward, when light pressure human body, people's cognition produces counteracting force backward to this blood-taking device, and this counteracting force promotes backward clamp port and opens the exposed front end in housing 1 outside of part 5.Clamp port opens part 5 and is subject to the backward rear movement of human body counteracting force, backward mobile clamp port open part 5 by inclined-plane coordinate promote elastic clip 22 open to both sides, thereby make blood taking needle needle stand 31 no longer be subject to the spacing 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 along ejection chamber 51, nook closing member 32 tips of blood taking needle 3 are stretched out launch the outer and puncture human vas in hole 54, play the object of blood sampling, it is large that the size ratio of needle stand 31 launches hole 54 sizes, and therefore needle stand 31 is blocked in and launches hole 54 rear sides and in ejection chamber 51.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 to elastic clip 22 elastic return, blood taking needle needle stand 31 moves forward and departs from clamp port 23, stop after blood taking needle 3 and move and again enter clamp port 23 thereby the spacing fin 27 on inclined-plane 26 is arranged in needle stand 31 rear sides, also just prevented the secondary utilization of this blood-taking device.

Certainly, above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow people can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations doing according to the spirit of this utility model main technical schemes or modification, within all should being encompassed in protection domain of the present utility model.

Claims

1. a transparent type disposable blood taking device, comprises housing (1), it is characterized in that: described housing (1) is transparent plastic, the through hole connecting before and after having in described 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; Described blood taking needle (3) comprises needle stand (31) and is fixed on the nook closing member (32) of this needle stand front end, be folded with stage clip (4), and this stage clip (4) applies elastic force forward to blood taking needle (3) between described blood taking needle (3) and holder (2); In the through hole of described housing (1), be also provided with the clamp port that described clamp port (23) can be opened allow blood taking needle (3) discharge and open part (5) from clamp port, described clamp port opens that part (5) is positioned at the front side of holder (2) and its inside is shaped with the ejection chamber (51) for blood taking needle (3) ejection operation; The front end that described clamp port opens part (5) stretches out outside housing (1), and be provided be connected with described ejection chamber (51), come in and go out for needle core of blood taking needle (32) launch hole (54); 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), be fixedly connected with by easily twisting off material, the front end of nook closing member sleeve (6) be connected with stretch out housing (1) outward twist off drive block (7).

2. transparent type 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).

3. transparent type disposable blood taking device according to claim 2, 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), be fixed by described buckle (25) and lock dog (11).

4. transparent type disposable blood taking device according to claim 2, 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).

5. transparent type disposable blood taking device according to claim 2, it is characterized in that: the front end of described elastic clip (22) is shaped with inclined-plane (26), described clamp port opens two clapboards (52) that part (5) comprises and match described inclined-plane (26) and is connected in two connecting plates (53) between two clapboards, and described two clapboards (52) and two connecting plates (53) form described ejection chamber (51) jointly.

6. transparent type disposable blood taking device according to claim 5, is characterized in that: on described inclined-plane (26), be shaped with the spacing fin (27) perpendicular to blood taking needle direction of ejection.

7. transparent type disposable blood taking device according to claim 1, is characterized in that: described nook closing member sleeve (6) comprise be enclosed within the outer socket part (61) of nook closing member (32) and with the connecting portion (62) that twists off drive block (7) and be fixedly connected with; Described socket part (61) is hollow circular tube structure, and its one end and described connecting portion (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 to be fixedly connected with.

8. transparent type disposable blood taking device according to claim 7, is characterized in that: described connecting portion (62) is provided with fixture block (63); Described drive block (7) one end that twists off arranges and connects pullover (71), and portion (72) is managed in other end setting, connects and on pullover (71), offers hole clipping (73); Described connecting portion (62) inserts in described connection pullover (71), and in hole clipping (73) on fixture block (63) Snap joint pullover (71) on connecting portion (62).

9. transparent type disposable blood taking device according to claim 1, is characterized in that: the described material that easily twists off is PE material.