CN103315752A - Controllable formula stopcock pjncture needle of taking a blood sample - Google Patents
Controllable formula stopcock pjncture needle of taking a blood sample Download PDFInfo
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- CN103315752A CN103315752A CN2013102711982A CN201310271198A CN103315752A CN 103315752 A CN103315752 A CN 103315752A CN 2013102711982 A CN2013102711982 A CN 2013102711982A CN 201310271198 A CN201310271198 A CN 201310271198A CN 103315752 A CN103315752 A CN 103315752A
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Abstract
The invention discloses a controllable blood sampling pipe plug puncture needle, which consists of a needle tube, a needle seat, a blood sampling current limiting control piece and a sealing ring, wherein through holes are arranged on the needle tube, the needle seat and the blood sampling current limiting control piece and are used as flow guide holes, the flow guide holes of the needle tube are communicated with the flow guide holes of the needle seat, the sealing ring is arranged between the needle seat and the blood sampling current limiting control piece, the blood sampling current limiting control piece is movably connected with the needle seat and can rotate relative to the needle seat, and the flow guide holes of the blood sampling current limiting control piece and the flow guide holes of the needle seat are completely staggered. Because the invention is not provided with the hemostatic sheath, the sample collection failure and the pollution to medical staff, patients and operating environment caused by too fast or too slow or no rebound of the hemostatic sheath can be avoided in the blood collection process, thereby reducing the difficulty of medical waste treatment and reducing the consumption of related resources. The invention also realizes the controllability of blood collection by the conduction and the sealing of the flow guide holes of the needle seat and the blood sample flow-limiting control piece.
Description
Technical field
The present invention relates to a kind of medical blood taking equipment technical field, relate in particular to a kind of novel blood sampling controllable type pipe close puncture needle.
Background technology
As shown in Figure 1, at present on the market the disposable venipuncture needle B that is flexible coupling mainly formed by three parts: pipe close puncture needle B1, conduit B2, venipuncture needle B3.Wherein, as shown in Figure 2, pipe close puncture needle B1 is comprised of haemostatic sheath B11, draw point pipe B12, needle stand B13.In hospital, when adopting existing blood sampling system that the patient is carried out blood collection, its version need to have determined the medical worker directly will advance in the plug of vacuum test tube to take a blood sample with the pipe close lancet puncture of haemostatic sheath with hands, take a blood sample and directly the pipe close puncture needle extracted from plug with hands again after complete, thus at present the structure of pipe close puncture needle so that this operation exists following potential safety hazard and problem:
At first, take a blood sample when pulling out pin after complete, the frictional force between needle body and haemostatic sheath can cause the haemostatic sheath resilience to be crossed slowly or not resilience greater than the resilience force of haemostatic sheath, and this moment, blood sample can out pollute medical worker, patient and operating environment from trickling in the pin.
Secondly, when the resilience force of haemostatic sheath greater than the frictional force between needle body and the haemostatic sheath during simultaneously greater than the frictional force between needle body and the plug, can cause the haemostatic sheath resilience too fast, this result causes secondary even repeatedly puncture, increased the blood specimen collection failure and to the probability of environment, simultaneously, medical worker and patient's security risk also increases.
This shows, how prior art is improved, a kind of pipe close puncture needle of architecture advances is provided, can be successfully disposablely finishes blood sampling and avoid occurring haemostatic sheath resilience improper and the repeatedly puncture and the pollution that cause after blood sampling is complete, this be the present technical issues that need to address in this area.
Summary of the invention
The object of the invention is to, a kind of blood sampling controllable type pipe close puncture needle is provided, haemostatic sheath is not set, the collection of specimens failure of avoiding causing because the haemostatic sheath resilience is improper and to the pollution of medical personnel, patient and operating environment.
For solving above technical problem, technical scheme of the present invention is:
A kind of blood sampling controllable type pipe close puncture needle, by needle tubing, needle stand, blood sample Current limited Control part, sealing ring forms, described needle tubing, needle stand, blood sample Current limited Control part is equipped with through hole as pod apertures, the pod apertures conducting of the pod apertures of described needle tubing and described needle stand, described sealing ring is arranged between described needle stand and the described blood sample Current limited Control part, described blood sample Current limited Control part and described needle stand are flexibly connected and can relatively rotate with described needle stand, and the pod apertures of the two experience staggered fully when described blood sample Current limited Control part and described needle stand relatively rotated, the state that overlaps.
Preferably, described sealing ring is chimeric with described blood sample Current limited Control part, described needle stand respectively.
Preferably, described blood sample Current limited Control part and described needle stand are provided with rotation positioning boss and the rotation locating slot of rotational angle when limiting described blood sample Current limited Control part and described needle stand and relatively rotate, and described rotation positioning boss extend in the rotation locating slot and can be subjected to displacement in the rotation locating slot.
Preferably, as a kind of specific embodiment: the pod apertures of described needle stand is arranged on the body front end of described needle stand, described needle tubing extend in the pod apertures of described needle stand and is connected with described needle stand, the body rear of described needle stand is provided with the open container cavity in outer end, the pod apertures of described needle stand and described container cavity conducting, one end of described blood sample Current limited Control part extend in the described container cavity and is connected with described container cavity by described sealing ring, pod apertures one end of described blood sample Current limited Control part and described container cavity conducting, the blood sample passage conducting that the other end and described blood sample Current limited Control part arrange.
Preferably, for aforementioned specific embodiment, the sidewall of described container cavity is provided with ring-like sealing locating groove, the outer surface of described blood sample Current limited Control part is provided with the sealing platform of sealing draw-in groove and the setting of contiguous sealing draw-in groove, the annular inner portion of described sealing ring is embedded in the sealing draw-in groove, and the outer ring portion of described sealing ring together is embedded in the described sealing locating groove together with described sealing platform.
Preferably, for aforementioned specific embodiment, described blood sample Current limited Control part is provided with the rotation positioning boss, the container cavity outer edge of described needle stand is provided with the rotation locating slot, described rotation locating slot is long arc shape, described rotation positioning boss extend in the described rotation locating slot and can rotate in described rotation locating slot, and spacing by the both ends of described rotation locating slot.
Preferably, as another specific embodiment, the top of described needle stand is provided with container cavity, and the lower end of described blood sample Current limited Control part extend in the described container cavity and is connected with described needle stand by described sealing ring, and expose outside described needle stand the upper end of described blood sample Current limited Control part; The pod apertures of described needle stand is divided into the first pod apertures, the second pod apertures, described the first pod apertures, described the second pod apertures lay respectively at the both sides of described container cavity, one end of described the first pod apertures stretches into for needle tubing and connects the sidewall conducting of the other end and described container cavity; The sidewall conducting of described the second pod apertures one end and described container cavity, the blood sample passage conducting that the other end and described needle stand arrange.
Preferably, for aforementioned another specific embodiment, be provided with a ring-like sealing locating groove in the container cavity of described needle stand, the outer surface of described blood sample Current limited Control part is provided with the sealing platform of sealing draw-in groove and the setting of contiguous sealing draw-in groove, the annular inner portion of described sealing ring is embedded in the described sealing draw-in groove, and the outer ring portion of described sealing ring together is embedded in the described sealing locating groove together with described sealing platform.
Preferably, for aforementioned another specific embodiment, the upper end of described blood sample Current limited Control part is provided with spanner.
Preferably, for aforementioned another specific embodiment, described blood sample Current limited Control part is provided with the rotation positioning boss, the container cavity outer edge of described needle stand is provided with the rotation locating slot, described rotation locating slot is long arc shape, described rotation positioning boss extend in the described rotation locating slot and can rotate in described rotation locating slot, and spacing by the both ends of described rotation locating slot.
Compared with prior art, blood sampling controllable type pipe close puncture needle of the present invention is owing to being comprised of needle tubing, needle stand, blood sample Current limited Control part, sealing ring, do not establish haemostatic sheath, so in blood collection procedure, can avoid too fast because of the haemostatic sheath resilience or cross slowly or collection of specimens failure that not resilience causes and to the pollution of medical worker, patient and operating environment, and then reduce the difficulty that medical waste is processed, reduce the consumption of related resource; Because the needle tubing, needle stand, the blood sample Current limited Control part that arrange are equipped with through hole as pod apertures, the pod apertures conducting of the pod apertures of needle tubing and needle stand, blood sample Current limited Control part and needle stand are flexibly connected and can relatively rotate with needle stand, the state that the pod apertures of the two experience staggered fully, overlaps when blood sample Current limited Control part relatively rotated with needle stand, thereby realized easily damming of blood sample and opened stream with comparatively simple structure, realize the controllability of blood sampling.
Description of drawings
Fig. 1 is the structural representation of blood taking needle in the prior art;
Fig. 2 is the decomposition texture schematic diagram of pipe close puncture needle among Fig. 1;
Fig. 3 is the take a blood sample overall structure schematic diagram of controllable type pipe close puncture needle embodiment one of the present invention;
Fig. 4 is the decomposition texture schematic diagram of blood sampling controllable type pipe close puncture needle embodiment one;
Fig. 5 is another decomposition texture schematic diagram of blood sampling controllable type pipe close puncture needle embodiment one;
Fig. 6 is the front view of blood sampling controllable type pipe close puncture needle embodiment one;
Fig. 7 is the user mode figure of blood sampling controllable type pipe close puncture needle embodiment one;
Fig. 8 is the top view of blood sampling controllable type pipe close puncture needle embodiment one;
Fig. 9 is the A-A cutaway view among Fig. 8;
Figure 10 is the enlarged drawing at E place among Fig. 9;
Figure 11 is the top view of blood sampling controllable type pipe close puncture needle before blood sampling of embodiment one;
Figure 12 is the B-B cutaway view of Figure 11;
Figure 13 is the top view of blood sampling controllable type pipe close puncture needle in blood sampling of embodiment one;
Figure 14 is the C-C cutaway view of Figure 13;
Figure 15 is the top view of blood sampling controllable type pipe close puncture needle after blood sampling of embodiment one;
Figure 16 is the D-D cutaway view of Figure 15;
Figure 17 is the overall structure schematic diagram of the embodiment of the invention two blood sampling controllable type pipe close puncture needles;
Figure 18 is the decomposition texture schematic diagram of the embodiment of the invention two blood sampling controllable type pipe close puncture needles;
Figure 19 is the decomposition side view of the embodiment of the invention two blood sampling controllable type pipe close puncture needles;
Figure 20 is the cutaway view of the embodiment of the invention two blood sampling controllable type pipe close puncture needles;
Figure 21 is the enlarged drawing at F place among Figure 20;
Figure 22 is the user mode schematic diagram of the embodiment of the invention two blood sampling controllable type pipe close puncture needles;
Figure 23 is the schematic diagram before the embodiment of the invention two blood sampling controllable type pipe close puncture needle blood samplings;
Figure 24 is the schematic diagram in the embodiment of the invention two blood sampling controllable type pipe close puncture needle blood samplings;
Figure 25 is the schematic diagram after the embodiment of the invention two blood sampling controllable type pipe close puncture needle blood samplings.
The specific embodiment
For making technical scheme of the present invention clearer, the present invention is described in detail by specific embodiment below in conjunction with accompanying drawing.
For the collection of specimens that causes because the haemostatic sheath resilience is improper in prior art failure with to the pollution problem of medical personnel, patient and operating environment, the invention provides a kind of blood sampling controllable type pipe close puncture needle, do not establish haemostatic sheath, avoid because improper collection of specimens failure and the pollution on the environment problem that causes of haemostatic sheath resilience.
Embodiment one
Referring to Fig. 3～Figure 16, in the present embodiment, the pipe close puncture needle is comprised of needle tubing 1, needle stand 2, sealing ring 3, blood sample Current limited Control part 4.
Wherein, needle tubing 1 lower end is provided with a needle tip, and the upper end extend in the needle stand 2, and needle tubing inside is provided with through hole, as the pod apertures 1a that flows for blood sample.
Wherein, needle stand 2 integral body are cylindrical, and an one end face is provided with needle tube joint 21, and the outer circumference diameter of needle tube joint 21 is less than the outer circumference diameter of needle stand 2.Needle tube joint 21 is provided with a through hole, and as pod apertures 21a, this pod apertures 21a cooperates with needle tubing 1, and needle tubing 1 extend among the pod apertures 21a fastening by viscose glue with pod apertures 21a.The other end of needle stand 2 is provided with open container cavity, stretch into into for blood sample Current limited Control part 4, the sidewall of container cavity is provided with a sealing locating groove 23, blood sample Current limited Control part 4 is provided with a sealing draw-in groove 44 and cooperates with sealing ring 3, play sealing and positioning action, its fit system is pressed into cooperation for forcing, and in the inner round portion indentation sealing draw-in groove 44 of sealing ring 3, the outer ring part of sealing ring 3 is together with sealing platform 41 1 logical extending in the sealing locating groove 23 of needle stand 2.The end face edge place that needle stand 2 arranges cavity is provided with a rotation locating slot 22, also is that position W1 is to the groove between the W2 of position among Fig. 3, and this rotates locating slot 22 and cooperates with rotation positioning boss 42 on the blood sample Current limited Control part 4, plays position-limiting action during rotation.
Blood sample Current limited Control part 4 integral body are cylindrical, main part is solid cylinder, one end of main part is provided with a joint with blood sample passage 26, and the other end of main part extend in the container cavity of needle stand 2 and is connected by sealing ring, sealing draw-in groove, sealing platform with container cavity.Main part is provided with a through hole along axis direction, as pod apertures 43, and the end face conducting of pod apertures 43 1 ends and main part, blood sample passage 26 conductings of the other end and joint.When rotation positioning boss 42 is positioned at W2 place, position, pod apertures 43 on the pod apertures 21a of the pod apertures 1a of needle tubing 1, needle stand 2 and the blood sample Current limited Control part 4 is in the same center line, be in the blood sampling state this moment, and the blood sample of coming in from needle tubing can enter into via the pod apertures 21a of needle stand 2 pod apertures 43 of blood sample Current limited Control part.When rotation positioning boss 42 is in position W1, pod apertures 43 on the blood sample Current limited Control part 4 staggers fully with the pod apertures 21a on the needle stand 2, there is not intersection, the end face of needle stand 2 blocks the pod apertures 43 on the blood sample Current limited Control part 4, blood sample does not circulate this moment, namely is in before the blood sampling or state after the blood sampling.
Below operation principle and the work process of the pipe close puncture needle in the present embodiment is described in detail:
The blood sampling controllable type pipe close puncture needle of the present embodiment by arrange the needle stand be connected with needle tubing, and needle stand be front latter linked blood sample Current limited Control part, its position, hole is overlapped and stagger by the pod apertures on the blood sample Current limited Control part, pod apertures on the needle stand being carried out shift in position, and then the effect that reaches out stream and dam, reach the purpose of controlling the blood specimen collection process.Specifically, be exactly by rotation blood sample Current limited Control part 4, blood sample Current limited Control part and needle stand circumferentially are being subjected to displacement, control the position relationship of the pod apertures on needle stand 2 and the blood sample Current limited Control part 4 with this, and then realize the controllability of blood specimen collection.
Concrete work process is as follows:
Before the blood sampling: as shown in Figure 7, the needle tubing 1 of blood sampling controllable type pipe close puncture needle is passed the plug A1 of vacuum test tube A, the end enters into the internal cavities of vacuum test tube, at this moment, rotation positioning boss 42 on the blood sample Current limited Control part 4 is positioned at W1 place, position, stagger fully in the position of pod apertures 21a and pod apertures 43, such as Fig. 8, Fig. 9, Figure 10, Figure 11, shown in Figure 12.
During blood sampling: as shown in figure 11, rotate blood sample Current limited Control part 4 until the rotation positioning boss 42 on it is positioned at W2 place, position by torsion (arrow namely represents the direction of torsion), at this moment, such as Figure 13, shown in Figure 14, the centrage of pod apertures 1a, pod apertures 21a, pod apertures 43 is on same straight line, and blood sampling begins.
After the blood sampling: counter-rotate blood sample Current limited Control part 4 to rotation positioning boss homing, in-position W1 place, the position relationship of needle tubing 1, needle stand 2, blood sample Current limited Control part 4 is got back to the front state of blood sampling at this moment, such as Figure 15, shown in Figure 16.
The key point of the present embodiment is, by needle stand 2 and sealing ring 3, blood sample Current limited Control part 4 cooperates, when needing blood sampling, rotation needle stand 2 or blood sample Current limited Control part 4, when being overlapped, the two pod apertures just can reach the effect of blood collection, and after blood sampling, by reverse rotation needle stand 2 or blood sample Current limited Control part 4 two pod apertures are staggered fully, then can reach the purpose that stops blood circulation, because this pipe close puncture needle is not established haemostatic sheath, so in blood collection procedure, can avoid too fast because of the haemostatic sheath resilience or cross slowly or collection of specimens failure that not resilience causes and to the medical worker, the pollution of patient and operating environment, and then reduce the difficulty that medical waste is processed, reduce the consumption of related resource.
In the present embodiment, one end of blood sample Current limited Control part 4 extend in the container cavity of needle stand setting, sealing ring is set between the two, in other embodiments, also can container cavity be set at blood sample Current limited Control part, and allow needle stand extend in the container cavity of blood sample Current limited Control part setting, and sealing ring is set between the two, also can reach same effect.In fact, as long as can be by rotation, the process of the closure that blood sample Current limited Control part can be experienced in rotation with the pod apertures of needle stand setting overlap conducting, staggers can realize damming and open the purpose of stream.
Embodiment two
Identical with embodiment one, the blood sampling controllable type pipe close puncture needle structure in the present embodiment still is comprised of needle tubing 1, needle stand 2, sealing ring 3, control valve 4.Wherein, the structure of needle tubing 1, sealing ring 3 is all identical with embodiment one.
Different from embodiment one is that the structure of the needle stand 2 in the present embodiment, the structure of blood sample Current limited Control part 4 and the annexation of the two change to some extent.
Referring to Figure 17～Figure 22, in the present embodiment, needle stand 2 is the ellipsoid bodily form substantially, its top is provided with the open container cavity of an end, and this container cavity is cylindrical, is used for blood sample Current limited Control part 4 is stretched into, its inwall is provided with the sealing locating groove 23 of an annular, blood sample Current limited Control part 4 is provided with sealing draw-in groove 44 and sealing platform 41, and sealing ring 3 is embedded in the sealing draw-in groove 44, extend in the sealing locating groove 23 of needle stand together with sealing platform 41.The front end of needle stand is as needle tube joint 21, and it is provided with pod apertures 21a, and needle tubing extend among the pod apertures 21a fastening by viscose glue with it.The rear end of needle stand 2 near a side of container cavity, is provided with pod apertures 25 and blood sample passage 26, pod apertures 25 1 ends and container cavity conducting, the other end and 26 conductings of blood sample passage successively.The edge of the container cavity outer end of needle stand 2 also is provided with a rotation locating slot 22, be among Figure 18 position W1 to the groove between the W2 of position, what match with this rotation locating slot 22 is the rotation positioning boss 42 that is arranged on the blood sample Current limited Control part 4, by the cooperation of the two, play position-limiting action during rotation, can make blood collection procedure fast, carry out swimmingly.
The main part of blood sample Current limited Control part 4 is cylindrical, it extend in the container cavity of needle stand, suitable with it, main part is provided with the through hole of a horizontally set, as pod apertures 43, the position of this pod apertures 43 is corresponding with pod apertures 21a and the pod apertures 25 of needle stand 2, an end face of this pod apertures 43 can overlap with the end face part of pod apertures 21a or overlap fully, another end face of this pod apertures 43 can overlap with an end face part of pod apertures 25 or all overlap, so just so that blood sample can flow to pod apertures 25 via pod apertures 43.The top of main part also is provided with a spanner 45, spanner 45 is exposed to outside the container cavity, be convenient to the staff application of force, so that main part and container cavity relatively rotate, in the rotation process, when rotation positioning boss 42 was in position W2, the axis of the pod apertures 11 on needle tubing 1, needle stand 2 and the blood sample Current limited Control part 4, pod apertures 21a, pod apertures 43, pod apertures 25 was in the same center line, and was in the blood sampling state this moment.When the rotation positioning boss is in position W1, pod apertures 43 on the blood sample Current limited Control part 4 staggers fully with pod apertures 21a and the pod apertures 25 on the needle stand 2, there is not intersection, the outer peripheral face of blood sample Current limited Control part 4 blocks the pod apertures 21a on the needle stand 2, blood sample does not circulate this moment, namely is in before the blood sampling or state after the blood sampling.
Operation principle and the work process of the present embodiment are as follows:
The blood sampling controllable type pipe close puncture needle of the present embodiment makes blood sample control the effect that constriction overlaps fully with its position, hole and staggers and reach out stream and dam by the shift in position of the pod apertures of control blood sample Current limited Control part, thereby reach the purpose of control blood specimen collection, realize the controllability of blood specimen collection.The specific works process is as follows:
Before the blood sampling: the plug A1 that the needle tubing 1 of the controllable type pipe close puncture needle of will taking a blood sample passes vacuum test tube A enters into the internal cavities of vacuum test tube, at this moment, rotation positioning boss 44 on the blood sample Current limited Control part 4 is positioned at the W1 place, position on the needle stand 2, staggering fully in the position of pod apertures 21a, pod apertures 43, sees Figure 23.
During blood sampling: as shown in figure 24, rotate blood sample Current limited Control part 4 until the rotation positioning boss 42 on it is positioned at W2 place, position, at this moment, the centrage of pod apertures 11, pod apertures 21a, pod apertures 43, pod apertures 25 is on same straight line, the end face in these holes overlaps fully, the blood sampling beginning.
After the blood sampling: backward rotation blood sample Current limited Control part 4 to rotation positioning boss 42 is positioned at W1 place, position, and the position relationship of needle tubing 1, needle stand 2, blood sample Current limited Control part 4 is returned to the front state of blood sampling at this moment, as shown in figure 25.
The pipe close puncture needle of the present embodiment, its key point is, by needle stand 2 and sealing ring 3, blood sample Current limited Control part 4 cooperates, rotate blood sample Current limited Control part 4 when the pod apertures of needle stand and the pod apertures of himself are overlapped, namely can reach the effect of blood collection, and backward rotation blood sample Current limited Control part 4 staggers two pod apertures fully, blood sample is stopped by the periphery wall of blood sample Current limited Control part after needle tubing enters pod apertures 21a, thereby reach the purpose that stops blood circulation, because the pipe close puncture needle of the present embodiment is not established haemostatic sheath, so this process has been avoided too fast because of the haemostatic sheath resilience or has been crossed slowly or collection of specimens failure that not resilience causes and to the medical worker, the pollution of patient and operating environment, further reduce the difficulty that medical waste is processed, reduce the consumption of related resource.
Among the above embodiment, the pore size of the pod apertures on the pod apertures on the needle stand and the blood sample Current limited Control part is identical, and at once can be coaxial aiming at fully, and in actual implementation process, the difference that the pod apertures of the two can be arranged, also can the disalignment setting, but can partially overlap should guarantee to turn to correspondence position the time, blood sample can be circulated get final product.
Only be preferred implementation of the present invention below, should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with the claim limited range.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. blood sampling controllable type pipe close puncture needle, it is characterized in that, by needle tubing, needle stand, blood sample Current limited Control part, sealing ring forms, described needle tubing, needle stand, blood sample Current limited Control part is equipped with through hole as pod apertures, the pod apertures conducting of the pod apertures of described needle tubing and described needle stand, described sealing ring is arranged between described needle stand and the described blood sample Current limited Control part, described blood sample Current limited Control part and described needle stand are flexibly connected and can relatively rotate with described needle stand, and the pod apertures of the two experience staggered fully when described blood sample Current limited Control part and described needle stand relatively rotated, the state that overlaps.
2. blood sampling controllable type pipe close puncture needle as claimed in claim 1 is characterized in that, described sealing ring is chimeric with described blood sample Current limited Control part, described needle stand respectively.
3. blood sampling controllable type pipe close puncture needle as claimed in claim 1, it is characterized in that, described blood sample Current limited Control part and described needle stand are provided with rotation positioning boss and the rotation locating slot of rotational angle when limiting described blood sample Current limited Control part and described needle stand and relatively rotate, and described rotation positioning boss extend in the rotation locating slot and can be subjected to displacement in the rotation locating slot.
4. blood sampling controllable type pipe close puncture needle as claimed in claim 1, it is characterized in that, the pod apertures of described needle stand is arranged on the body front end of described needle stand, described needle tubing extend in the pod apertures of described needle stand and is connected with described needle stand, the body rear of described needle stand is provided with the open container cavity in outer end, the pod apertures of described needle stand and described container cavity conducting, one end of described blood sample Current limited Control part extend in the described container cavity and is connected with described container cavity by described sealing ring, pod apertures one end of described blood sample Current limited Control part and described container cavity conducting, the blood sample passage conducting that the other end and described blood sample Current limited Control part arrange.
5. blood sampling controllable type pipe close puncture needle as claimed in claim 4, it is characterized in that, the sidewall of described container cavity is provided with ring-like sealing locating groove, the outer surface of described blood sample Current limited Control part is provided with the sealing platform of sealing draw-in groove and the setting of contiguous sealing draw-in groove, the annular inner portion of described sealing ring is embedded in the sealing draw-in groove, and the outer ring portion of described sealing ring together is embedded in the described sealing locating groove together with described sealing platform.
6. blood sampling controllable type pipe close puncture needle as claimed in claim 4, it is characterized in that, described blood sample Current limited Control part is provided with the rotation positioning boss, the container cavity outer edge of described needle stand is provided with the rotation locating slot, described rotation locating slot is long arc shape, described rotation positioning boss extend in the described rotation locating slot and can rotate in described rotation locating slot, and spacing by the both ends of described rotation locating slot.
7. blood sampling controllable type pipe close puncture needle as claimed in claim 1, it is characterized in that, the top of described needle stand is provided with container cavity, the lower end of described blood sample Current limited Control part extend in the described container cavity and is connected with described needle stand by described sealing ring, and expose outside described needle stand the upper end of described blood sample Current limited Control part; The pod apertures of described needle stand is divided into the first pod apertures, the second pod apertures, described the first pod apertures, described the second pod apertures lay respectively at the both sides of described container cavity, one end of described the first pod apertures stretches into for needle tubing and connects the sidewall conducting of the other end and described container cavity; The sidewall conducting of described the second pod apertures one end and described container cavity, the blood sample passage conducting that the other end and described needle stand arrange.
8. blood sampling controllable type pipe close puncture needle as claimed in claim 7, it is characterized in that, be provided with a ring-like sealing locating groove in the container cavity of described needle stand, the outer surface of described blood sample Current limited Control part is provided with the sealing platform of sealing draw-in groove and the setting of contiguous sealing draw-in groove, the annular inner portion of described sealing ring is embedded in the described sealing draw-in groove, and the outer ring portion of described sealing ring together is embedded in the described sealing locating groove together with described sealing platform.
9. blood sampling controllable type pipe close puncture needle as claimed in claim 7 is characterized in that, the upper end of described blood sample Current limited Control part is provided with spanner.
10. blood sampling controllable type pipe close puncture needle as claimed in claim 7, it is characterized in that, described blood sample Current limited Control part is provided with the rotation positioning boss, the container cavity outer edge of described needle stand is provided with the rotation locating slot, described rotation locating slot is long arc shape, described rotation positioning boss extend in the described rotation locating slot and can rotate in described rotation locating slot, and spacing by the both ends of described rotation locating slot.
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| CN201310271198.2A CN103315752B (en) | 2013-06-28 | 2013-06-28 | Controllable formula stopcock pjncture needle of taking a blood sample |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577862A (en) * | 2017-12-15 | 2018-09-28 | 中南大学湘雅医院 | Blood sampling device and blood sampling instrument adopting same |
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| JP2008154702A (en) * | 2006-12-22 | 2008-07-10 | Horiba Ltd | Quantitative blood collection tube and fixed amount blood collecting tool |
| CN102160793A (en) * | 2011-03-08 | 2011-08-24 | 成都普什医药塑料包装有限公司 | Dripping-proof backflow-blood-observable venous blood taking needle |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108577862A (en) * | 2017-12-15 | 2018-09-28 | 中南大学湘雅医院 | Blood sampling device and blood sampling instrument adopting same |
| CN108577862B (en) * | 2017-12-15 | 2020-07-31 | 中南大学湘雅医院 | Blood sampling device and blood sampling instrument adopting same |
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| CN103315752B (en) | 2014-12-17 |
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