CN108403128A - A kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet device - Google Patents
A kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet device Download PDFInfo
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- CN108403128A CN108403128A CN201810248390.2A CN201810248390A CN108403128A CN 108403128 A CN108403128 A CN 108403128A CN 201810248390 A CN201810248390 A CN 201810248390A CN 108403128 A CN108403128 A CN 108403128A
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- preventing reverse
- flow
- connecting seat
- blood
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- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000010241 blood sampling Methods 0.000 claims description 31
- 238000003825 pressing Methods 0.000 claims description 9
- 230000001681 protective effect Effects 0.000 claims description 8
- 210000004204 blood vessel Anatomy 0.000 claims description 3
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- 239000011800 void material Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 9
- 230000002411 adverse Effects 0.000 abstract description 5
- 238000011169 microbiological contamination Methods 0.000 abstract description 4
- 238000009434 installation Methods 0.000 description 5
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/153—Devices specially adapted for taking samples of venous or arterial blood, e.g. with syringes
- A61B5/154—Devices using pre-evacuated means
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150015—Source of blood
- A61B5/15003—Source of blood for venous or arterial blood
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/15—Devices for taking samples of blood
- A61B5/150007—Details
- A61B5/150206—Construction or design features not otherwise provided for; manufacturing or production; packages; sterilisation of piercing element, piercing device or sampling device
- A61B5/150221—Valves
Abstract
The present invention provides a kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet devices, it is related to medical apparatus technical field, blood lancet device provided by the invention, including vein blood taking needle, pipe close puncture needle and the interconnecting piece for connecting vein blood taking needle and pipe close puncture needle, wherein, interconnecting piece is provided with venous samples acquisition valve for preventing reverse-flow device；Adverse current valve gear includes：Centre is provided with the first connecting seat of through-hole, the elastic valve for preventing reverse-flow on the first connecting seat, and the second connecting seat of the cavity for accommodating the elastic valve for preventing reverse-flow is cooperatively formed with the first connecting seat；Second connecting seat is connected together with the first connecting seat;It is provided with the through-hole being in communication with the outside on second connecting seat, the blood another mistake of extraction can be effectively prevent to flow back in human body, the blood for avoiding microbiological contamination enters human body and damaged to human body.Additionally it is possible to remove the aseptic process to blood collecting containers entirety from, it is cost-effective.
Description
Technical field
The present invention relates to medical apparatus technical fields, acquire valve for preventing reverse-flow device more particularly, to a kind of venous samples and adopt
Blood needle device.
Background technology
In the medical field, medical staff is acquired by various means, obtains Human Physiology, pathological information, for correct
It diagnoses the illness, wherein the acquisition to blood preparation usually has following three kinds of approach：1. subcutaneous blood sampling, is chiefly used in blood constituent
Simple differential counting detection, use subcutaneous blood taking needle.2. venous blood collection, can to hematology, the endogenous aetology of blood and its
He is detected related discipline index in detail, using very extensively in clinic, uses pen type or split type vein blood taking needle more.③
Arterial blood drawing, mostly in critical acute disease to aterial blood gas indexes following detect, application is less, use arterial blood drawing special syringe into
Row acquisition.Acquisition and inspection to blood preparation, the purpose is to pass through the analysis detection to blood constituent, acquisition blood blood component
And in blood bacteriology, virological infection level detection, to understand Human Physiology and pathologic condition, or understand drug therapy
Effect afterwards, and to the development of disease, lapse to and prognosis judges.
Wherein, venous blood collection is most common Blood collection.But in practical operation, appearance is compared when human vein is taken a blood sample
Easily there is the case where blood back flow the Huis' body in blood collecting containers, so, it is with sterile shape in the production standard of blood collecting containers
Formula is formulated.But negative pressure blood-taking tube is all glass mostly, the reagent in blood collecting containers is come in a manner of viable bacteria
Embody, so, to blood collecting containers integrally sterile processing method with regard to extremely difficult.
Therefore, a kind of venous samples acquisition valve for preventing reverse-flow that can be effectively prevent in blood back flow the Huis' body of extraction is developed
Device and blood lancet device are particularly important.
In view of this, special propose the present invention.
Invention content
First of the present invention is designed to provide a kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet device, with
Solve that blood taking needle counterflow-preventing effect in the prior art is bad, the technology for being easy the case where adverse current occur when producing blood is asked
Topic.
A kind of venous samples acquisition valve for preventing reverse-flow device, wherein the venous samples acquire valve for preventing reverse-flow device and include：In
Between be provided with the first connecting seat of through-hole, the elastic valve for preventing reverse-flow on the first connecting seat, and match with the first connecting seat
Close the second connecting seat for forming the cavity for accommodating the elastic valve for preventing reverse-flow；Second connecting seat engages company with the first connecting seat
It connects;It is provided with the through-hole being in communication with the outside on second connecting seat；
It is described elasticity valve for preventing reverse-flow include：In the valve body of hollow setting, the mounting portion with chimb in valve body rear end is set,
The valve port triangular in shape in the section of valve body front end is set, and the valve port end is set as default conditions and is connect in normally off
The linear slotting structure of negative pressure pressure in opened condition is received,
And the second connecting seat cavity interior walls be provided with it is described to prevent for pressing the chimb of the elastic valve for preventing reverse-flow
The protrusion that elastic valve for preventing reverse-flow shakes.
The venous samples acquire valve for preventing reverse-flow device, wherein first connecting seat and the second connecting seat coordinate shape
At for accommodating the cavity for installing the elastic valve for preventing reverse-flow, the protrusion be arranged on the cavity inner wall it is one convex
Ring.
The venous samples acquire valve for preventing reverse-flow device, wherein the protrusion is to be arranged on the cavity inner wall
A bulge loop wall or the protrusion be arranged at least two salient point of the second connecting seat cavity interior walls.
The venous samples acquire valve for preventing reverse-flow device, wherein the valve body is the valve master being arranged in hollow cylindrical
Body or the valve body to be arranged in hollow square or the valve body to be arranged in polygon.
The venous samples acquire valve for preventing reverse-flow device, wherein first connecting seat includes：For being socketed installation institute
State the first boss of elastic valve for preventing reverse-flow, setting the first boss opposite side and with the first boss it is integrally formed
First interface, first interface with the connection flexible pipe for being connected with blood collecting puncture needle for connecting；And in the first boss and first
Protrusion is formed with for covering the convex hole for closing the second connecting seat cavity between interface.
The venous samples acquire valve for preventing reverse-flow device, wherein second connecting seat includes：For being connect with first
Seat cooperatively forms the cavity for accommodating the elastic valve for preventing reverse-flow cavity, be connected to the cavity with respect to the other side and with it is described
The integrally formed second interface of cavity.
The venous samples acquire valve for preventing reverse-flow device, wherein are set gradually from outside to inside inside the cavity useful
Mounted on the first round socket part of first connecting seat one end and it is used to form that described to accommodate the elasticity anti-reverse in socket
The second round socket part of valve cavity is flowed, the internal diameter of the described second round socket part is less than the first round socket part, and described
Second round socket part forms the chimb for pressing the elastic valve for preventing reverse-flow to prevent with the first round socket part junction
The protrusion that the elasticity valve for preventing reverse-flow shakes.
The venous samples acquire valve for preventing reverse-flow device, wherein are provided with and are used for and negative tube in the second interface
Pipe close puncture needle connection connector；Be respectively arranged on first connecting seat and the second connecting seat be in communication with the outside it is same
Shaft through-hole.
The venous samples acquire valve for preventing reverse-flow device, wherein the elasticity valve for preventing reverse-flow is that food grade silicone is unidirectional
Valve for preventing reverse-flow.
A kind of blood lancet device, wherein including：Vein blood taking needle for being pierced into blood sampling, for connecting negative pressure blood-taking tube
Pipe close puncture needle and the connection vein blood taking needle and pipe close puncture needle interconnecting piece；
The interconnecting piece includes sequentially connected blood sampling needle handle, connection flexible pipe and any one of them venous samples acquisition counterflow-preventing
Valve gear；
The blood sampling needle handle is connect with vein blood taking needle, and the puncture needle is connect with venous samples acquisition valve for preventing reverse-flow device, institute
The venous samples acquisition valve for preventing reverse-flow device stated is provided with elastic one-way valve, for preventing the blood back flow of extraction from returning vein.
The blood lancet device, wherein blood taking needle protective case is arranged with outside the vein blood taking needle, the pipe close punctures
It is arranged with puncture needle protective case outside needle.
Venous samples acquisition valve for preventing reverse-flow device and blood lancet device provided by the invention, including：First connecting seat, installation
Elastic valve for preventing reverse-flow on the first connecting seat, and the sky for accommodating the elastic valve for preventing reverse-flow is cooperatively formed with the first connecting seat
Second connecting seat of chamber；It is described elasticity valve for preventing reverse-flow include：In the valve body of hollow setting, the band being arranged in valve body rear end is convex
The mounting portion on side, is arranged the valve port triangular in shape in the section of valve body front end, and the valve port end is set as default conditions and is in
Normally off and receive the linear slotting structure of negative pressure pressure in opened condition, and, the second connecting seat cavity interior walls are set
It is equipped with the protrusion for pressing the chimb of the elastic valve for preventing reverse-flow to prevent the elastic valve for preventing reverse-flow from shaking.With existing skill
Art is compared, and venous samples of the invention acquisition valve for preventing reverse-flow device receives negative pressure pressure in normally off equipped with default conditions and is in
The elastic valve for preventing reverse-flow of the linear slotting structure of opening state；In human vein blood collection procedure, elastic valve for preventing reverse-flow is open shape
State, after blood collection, elastic valve for preventing reverse-flow returns to normally off, and negative pressure hemostix container is extracted, to prevent negative pressure hemostix
Blood moment in container returns to human body, and so, negative pressure hemostix container just completely cuts off with human body completely, even if negative pressure hemostix holds
There is bacterium in device, injury also can not produce to human body.
The blood lancet device of the embodiment of the present invention includes the vein blood taking needle for being pierced into blood sampling, is adopted for connecting negative pressure
The pipe close puncture needle of blood vessel and the interconnecting piece of the connection vein blood taking needle and pipe close puncture needle；The interconnecting piece includes connecting successively
Blood sampling needle handle, connection flexible pipe and any one of them venous samples acquisition valve for preventing reverse-flow device connect；The blood sampling needle handle with it is quiet
Arteries and veins blood taking needle connects, and the puncture needle is connect with venous samples acquisition valve for preventing reverse-flow device, and venous samples acquisition is anti-reverse
Flow valve device is provided with elastic one-way valve, for preventing the blood back flow of extraction from returning vein.
For blood lancet device provided by the invention in blood collection procedure, valve for preventing reverse-flow device is open, the blood energy of extraction
Enough by interconnecting piece, after blood collection, valve for preventing reverse-flow device is closed immediately, and the blood of extraction can not be inverse by interconnecting piece
Stream.By the setting of valve for preventing reverse-flow device, can ensure extraction blood can only from vein blood taking needle by interconnecting piece to pipe close
The direction of puncture needle is flowed, and the blood another mistake of extraction is effectively prevent to flow back in human body, the blood for avoiding microbiological contamination enter human body and
Human body is damaged.Additionally it is possible to remove the aseptic process to blood collecting containers entirety from, it is cost-effective.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram for the blood lancet device that the embodiment of the present invention 1 provides.
Fig. 2 is that the venous samples for the blood lancet device that the embodiment of the present invention 1 provides acquire the signal of valve for preventing reverse-flow apparatus structure
Figure.
Fig. 3 is the configuration schematic diagram that the venous samples that the embodiment of the present invention 1 provides acquire valve for preventing reverse-flow device.
Fig. 4 is that the elastic valve for preventing reverse-flow structure for the venous samples acquisition valve for preventing reverse-flow device that the embodiment of the present invention 1 provides is shown
It is intended to.
Fig. 5 is the second connecting base structure signal that the venous samples that the embodiment of the present invention 1 provides acquire valve for preventing reverse-flow device
Figure.
Icon：1- vein blood taking needles；2- pipe close puncture needles；3- valve for preventing reverse-flow devices；4- blood sampling needle handles；5- connection flexible pipes；
10- interconnecting pieces；The first connecting seats of 31-；32- elasticity valve for preventing reverse-flow；The second connecting seats of 33-；301- through-holes；302- cavitys.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with embodiment, it is clear that described reality
It is a part of the embodiment of the present invention to apply example, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
The every other embodiment that art personnel are obtained without making creative work belongs to the model that the present invention protects
It encloses.
In the description of the present invention, it should be noted that such as occur term "center", "upper", "lower", "left", "right",
"vertical", "horizontal", "inner", "outside" etc., indicated by orientation or positional relationship be orientation based on ... shown in the drawings or position
Relationship is merely for convenience of description of the present invention and simplification of the description, and not indicating or implying the indicated device or element must have
There is specific orientation, with specific azimuth configuration and operation, therefore is not considered as limiting the invention.In addition, as occurred
Term " first ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " peace such as occur
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
Embodiment 1
As shown in Figure 1, a kind of blood lancet device is present embodiments provided, as shown in Figure 1, including：Vein for being pierced into blood sampling
Blood taking needle 1, the company of pipe close puncture needle 2 and the connection vein blood taking needle 1 and pipe close puncture needle 2 for connecting negative pressure blood-taking tube
Socket part 10.
The interconnecting piece 10 includes sequentially connected blood sampling needle handle 4, connection flexible pipe 5 and venous samples acquisition valve for preventing reverse-flow dress
Set 3；The blood sampling needle handle 4 is connect with vein blood taking needle 1, the pipe close puncture needle 2 and venous samples acquisition valve for preventing reverse-flow device 3
Connection, venous samples acquisition valve for preventing reverse-flow device 3 is provided with elastic one-way valve, for preventing the blood back flow of extraction from returning
Vein.
Wherein, vein blood taking needle 1 makes venous samples acquisition valve for preventing reverse-flow provided by the invention for puncturing into vein blood vessel
Device is connected with vein blood vessel；Pipe close puncture needle 2 is for puncturing into blood collection device（Such as negative pressure blood-taking tube）It is interior, make this
The venous samples acquisition valve for preventing reverse-flow device that invention provides is connected with blood collection device.
In the present embodiment, the venous samples acquisition valve for preventing reverse-flow device 3 is provided with elastic one-way valve and adopts
With to prevent blood moment in negative pressure hemostix container from returning to human body, will not being damaged to human body.
In the embodiment of the present invention, the venous blood for preventing the blood back flow of extraction from returning vein is provided on the interconnecting piece
Sample acquires valve for preventing reverse-flow device 3, does not limit the concrete structure of interconnecting piece, can be tightly connected vein blood taking needle 1 and pipe close
The device of puncture needle 2 can be used as interconnecting piece of the present invention, such as can be, but be not limited to rubber hose or plastics are soft
Pipe.
In certain the present embodiment, the venous samples acquisition valve for preventing reverse-flow device 3 interconnecting piece installation site in addition to Fig. 1
The position of illustrated embodiment（The i.e. described interconnecting piece 10 is adopted including sequentially connected blood sampling needle handle 4, connection flexible pipe 5 and venous samples
Collect valve for preventing reverse-flow device 3）, such as can be, but it includes sequentially connected blood sampling needle handle 4, vein to be not limited to the interconnecting piece 10
Blood specimen collection valve for preventing reverse-flow device and connection flexible pipe etc., i.e. venous samples, which acquire valve for preventing reverse-flow device, can also be mounted on blood sampling
The rear end of needle handle 4 realizes that effect is same.
Preferably in embodiment, as shown in Figures 2 and 3, the venous samples acquisition provided in an embodiment of the present invention is anti-reverse
Flow valve device 3 includes：It is anti-reverse that centre is provided with the first connecting seat 31 of through-hole 301, the elasticity on the first connecting seat 31
Valve 32 is flowed, and cooperatively forms the second connecting seat of the cavity 302 for accommodating the elastic valve for preventing reverse-flow 32 with the first connecting seat 31
33.In the present embodiment, second connecting seat 33 is connected together with the first connecting seat 31, and the second connecting seat 33 is provided with cavity,
It is close to lid to close on first connecting seat, forms the cavity for accommodating the elastic valve for preventing reverse-flow 32.Described second
The through-hole being in communication with the outside is provided on connecting seat 33.
Further, as shown in figure 4, the elasticity valve for preventing reverse-flow 32 includes：In the valve body 321 of hollow setting, setting
The valve port triangular in shape in the section of 321 front end of valve body is arranged in the mounting portion 322 with chimb 11 in 321 rear end of valve body
323,323 end of the valve port is set as default conditions and receives negative pressure pressure in opened condition linear in normally off cracking
Structure 3231.I.e. in the embodiment of the present invention, the elastic valve for preventing reverse-flow 32 in the venous samples acquisition valve for preventing reverse-flow device 3 is write from memory
It is to be in normally off to recognize state, after pipe close puncture needle 2 connects negative pressure blood-taking tube, the linear knot that cracks of elastic valve for preventing reverse-flow 32
In opened condition by negative pressure pressure-driven, blood was collected for structure 323, and blood sampling is completed, 323 end of valve port of the elasticity valve for preventing reverse-flow 32
The linear slotting structure 323 at end reverts to normally off.
As shown in Figures 2 and 3, in the present embodiment, 33 cavity of the second connecting seat, 331 inner wall is provided with for pressing
The protrusion 3311 that the chimb 11 of the mounting portion 322 of elastic valve for preventing reverse-flow 32 is stated to prevent the elastic valve for preventing reverse-flow 32 from shaking.
In the embodiment of the present invention, it is anti-reverse that the elasticity is pushed down using 33 cavity of the second connecting seat, 331 inner wall setting protrusion 3311
Flow valve 32 mounting portion 322 chimb 11, can be effectively prevented elastic valve for preventing reverse-flow 32 receive negative pressure open when loosen, more into
One step improves the safety of blood sampling.
Blood lancet device provided by the invention, in blood collection procedure, vein blood taking needle 1 punctures into vein blood vessel, and pipe close is worn
Pricker 2 punctures into blood collection device（Such as negative pressure blood-taking tube）It is interior, at this point, the negative pressure driving valve for preventing reverse-flow dress of negative pressure blood-taking tube
The linear slotting structure 323 for setting 3 elastic valve for preventing reverse-flow 32 is opened, and the blood of extraction can pass sequentially through interconnecting piece blood sampling needle handle
4, connection flexible pipe 5 and venous samples acquisition valve for preventing reverse-flow device 3, after blood collection, the elasticity of valve for preventing reverse-flow device 3 is anti-
Reflux valve 32 is closed immediately, and the blood of extraction can not pass through interconnecting piece adverse current.Pass through the setting of valve for preventing reverse-flow device 3, Neng Goubao
The blood for demonstrate,proving extraction can only be flowed by interconnecting piece to the direction of pipe close puncture needle 2 from vein blood taking needle 1, effectively prevent extraction
Blood another mistake flows back in human body, and the blood for avoiding microbiological contamination enters human body and damaged to human body.Additionally it is possible to remove from pair
The aseptic process of blood collecting containers entirety, it is cost-effective.
Venous samples acquisition valve for preventing reverse-flow device 3 described in the present embodiment, as shown in Figures 2 and 3, first connecting seat
31 and second connecting seat 33 cooperatively form for accommodating the cavity 302 for installing the elastic valve for preventing reverse-flow 32, the protrusion
3311 be the bulge loop being arranged on 302 inner wall of the cavity.After first connecting seat 31 and the second connecting seat 33 lid close installation, institute
State 33 cavity of the second connecting seat, 331 inner wall setting protrusion 3311 push down the elastic valve for preventing reverse-flow 32 mounting portion 322 it is convex
Side 11 can be effectively prevented when elastic valve for preventing reverse-flow 32 receives negative pressure opening and loosen, further improve the safety of blood sampling
Property.
Certainly, further preferably embodiment, the protrusion 3311 can also be to be arranged on 302 inner wall of the cavity
A bulge loop wall or the protrusion 3311 be setting in 33 cavity interior walls of the second connecting seat, at least two salient point, pressure
Closing the elastic valve for preventing reverse-flow 32 prevents from skidding off.
In this preferred embodiment, valve body 321 can be the valve body being arranged in hollow cylindrical, as shown in Figure 4, certain sheet
Valve body described in implementation may be the valve body being arranged in hollow square, rectangular to be inserted on the first connecting seat 31 not
It can rotate easily, be more advantageous to counterflow-preventing.Certain valve body can also be the valve body being arranged in polygon.
Further, venous samples acquisition valve for preventing reverse-flow device 3, as shown in figure 3, first connecting seat 31 wraps
It includes：For being socketed the first boss 311 for installing the elastic valve for preventing reverse-flow 32, it is arranged in 311 opposite side of the first boss
And it is used for 311 integrally formed first interface 312 of the first boss, first interface 312 and is connected with blood collecting puncture needle
Connection flexible pipe 5 connects, as shown in Figure 1；And it protrudes and is formed with for covering between the first boss 311 and first interface 312
Close the convex hole 313 of 33 cavity of the second connecting seat.In the present embodiment, elasticity valve for preventing reverse-flow 32 socket is mounted on described
First boss 311.It is covered and is closed by second connecting seat 33 again, and institute is pushed down by the protrusion 3311 on the second connecting seat 33
The chimb 11 for stating the mounting portion 322 of elastic valve for preventing reverse-flow 32 can be effectively prevented elastic valve for preventing reverse-flow 32 and receive negative pressure opening
Shi Songdong, will not leak, and further improve the safety of blood sampling.
Further, venous samples acquisition valve for preventing reverse-flow device 3, as shown in figure 3, second connecting seat 33 wraps
It includes：For cooperatively forming the cavity 331 for accommodating 32 cavity of the elastic valve for preventing reverse-flow with the first connecting seat 31, it is connected to institute
State cavity 331 with respect to the other side and with 331 integrally formed second interface 332 of the cavity.Second interface 332 is used for connecting tube
Fill in puncture needle 2.
It is useful for socket installation as shown in figure 5, being set gradually from outside to inside inside the cavity 331 of second connecting seat 33
Described first connecting seat, 31 one end the first round socket part 3312 and be used to form and described accommodate the elastic valve for preventing reverse-flow
The internal diameter of the round socket part 3313 of the second of 32 cavitys, the described second round socket part 3313 is less than the first round socket part
3312, and formed in 3313 and first round socket part of the described second round socket part, 3312 junction for pressing the elasticity
Protrusion 3311 of the chimb of valve for preventing reverse-flow 32 to prevent the elastic valve for preventing reverse-flow 32 from shaking.By on the second connecting seat 33
Protrusion 3311 pushes down the chimb 11 of the mounting portion 322 of the elastic valve for preventing reverse-flow 32, can be effectively prevented elastic counterflow-preventing
Valve 32, which receives when negative pressure is opened, to be loosened, and will not be leaked, further be improved the safety of blood sampling.
Further, as shown in figures 1 and 3, it is provided in the second interface 332 for being punctured with the pipe close of negative tube
The connector 10 that needle 2 connects；It is respectively arranged with the through-hole being in communication with the outside on first connecting seat, 31 and second connecting seat 33.
Further, the elastic valve for preventing reverse-flow 32 is the unidirectional valve for preventing reverse-flow of food grade silicone, can effectively ensure this
Implement the safety of blood taking needle.
Further, it is arranged with blood taking needle protective case 15 outside the vein blood taking needle 1, is arranged outside the pipe close puncture needle 2
There is puncture needle protective case 16.It is arranged protective case respectively outside vein blood taking needle 1 and pipe close puncture needle 2, on the one hand can ensure quiet
Arteries and veins blood taking needle 1 and pipe close puncture needle 2 will not be contaminated before use, prevent from puncturing into after human body the therefore adverse consequences such as infection,
On the other hand, vein blood taking needle 1 and pipe close puncture needle 2 can be also avoided to stab operating personnel before use.
When acquiring valve for preventing reverse-flow device using venous samples provided in this embodiment, Nurses first protect blood taking needle
Sheath 15 is taken, and then holds blood sampling needle handle 4, vein blood taking needle 1 is punctured into the vein blood vessel for waiting for Nurses, confirmation is worn
After thorn is accurate, puncture needle protective case 16 is then taken, pipe close puncture needle 2, which is punctured through pipe close 11, to be entered in heparin tube.At this point, sharp
With the negative pressure in heparin tube, valve for preventing reverse-flow device 3 is made to be in open state, venous blood passes through vein blood taking needle 1, interconnecting piece and pipe
It fills in puncture needle 2 and enters heparin tube.When blood sampling volume is enough, pipe close puncture needle 2 is extracted from heparin tube pipe close 11, valve for preventing reverse-flow
Device 3 is closed immediately, and the blood of extraction can not be extracted by interconnecting piece adverse current, then by vein blood taking needle 1, complete blood sampling operation.
Embodiment 2
Venous samples acquisition valve for preventing reverse-flow device provided in this embodiment is a component in 1 blood-taking device of embodiment, is implemented
Technology contents disclosed in example 1 are not repeated to describe in the present embodiment, and 1 disclosure of embodiment also belongs to the present embodiment public affairs
The content opened, the technical solution that embodiment 1 has described also belong to the present embodiment, and this embodiment is not repeated.
Present embodiments providing a kind of venous samples acquisition valve for preventing reverse-flow device 3 includes：Centre is provided with through-hole 301
First connecting seat 31, the elastic valve for preventing reverse-flow 32 on the first connecting seat 31, and cooperatively formed with the first connecting seat 31
Accommodate the second connecting seat 33 of the cavity 302 of the elastic valve for preventing reverse-flow 32.In the present embodiment, second connecting seat 33 and
A connecting seat 31 is connected together, and the second connecting seat 33 is provided with cavity, is close to lid and closes on first connecting seat, is formed
Cavity for accommodating the elastic valve for preventing reverse-flow 32.It is provided with the through-hole being in communication with the outside on second connecting seat 33.
Further, as shown in figure 4, the elasticity valve for preventing reverse-flow 32 includes：In the valve body 321 of hollow setting, setting
The valve port triangular in shape in the section of 321 front end of valve body is arranged in the mounting portion 322 with chimb 11 in 321 rear end of valve body
323,323 end of the valve port is set as default conditions and receives negative pressure pressure in opened condition linear in normally off cracking
Structure 3231.I.e. in the embodiment of the present invention, the elastic valve for preventing reverse-flow 32 in the venous samples acquisition valve for preventing reverse-flow device 3 is write from memory
It is to be in normally off to recognize state, after pipe close puncture needle 2 connects negative pressure blood-taking tube, the linear knot that cracks of elastic valve for preventing reverse-flow 32
In opened condition by negative pressure pressure-driven, blood was collected for structure 323, and blood sampling is completed, 323 end of valve port of the elasticity valve for preventing reverse-flow 32
The linear slotting structure 323 at end reverts to normally off.
As shown in Figures 2 and 3, in the present embodiment, 33 cavity of the second connecting seat, 331 inner wall is provided with for pressing
The protrusion 3311 that the chimb 11 of the mounting portion 322 of elastic valve for preventing reverse-flow 32 is stated to prevent the elastic valve for preventing reverse-flow 32 from shaking.
In the embodiment of the present invention, it is anti-reverse that the elasticity is pushed down using 33 cavity of the second connecting seat, 331 inner wall setting protrusion 3311
Flow valve 32 mounting portion 322 chimb 11, can be effectively prevented elastic valve for preventing reverse-flow 32 receive negative pressure open when loosen, more into
One step improves the safety of blood sampling.
In conclusion venous samples acquisition valve for preventing reverse-flow device provided by the invention and blood lancet device, including：First connects
Joint chair, the elastic valve for preventing reverse-flow on the first connecting seat, and cooperatively form the receiving elasticity with the first connecting seat and prevent
Second connecting seat of the cavity of reflux valve；It is described elasticity valve for preventing reverse-flow include：In the valve body of hollow setting, it is arranged in valve master
The valve port triangular in shape in the section of valve body front end, the valve port end setting is arranged in the mounting portion with chimb of body rear end
The linear slotting structure of negative pressure pressure in opened condition is received in normally off for default conditions, and, second connection
Seat cavity interior walls are provided with convex to prevent the elastic valve for preventing reverse-flow from shaking for pressing the chimb of the elastic valve for preventing reverse-flow
Go out portion.Compared with prior art, venous samples acquisition valve for preventing reverse-flow device of the invention equipped with default conditions in normally off and
Receive the elastic valve for preventing reverse-flow of the linear slotting structure of negative pressure pressure in opened condition；In human vein blood collection procedure, elasticity is anti-
Reflux valve is open state, and after blood collection, elastic valve for preventing reverse-flow returns to normally off, and negative pressure hemostix container is extracted, from
And prevent the blood moment in negative pressure hemostix container from returning to human body, so, negative pressure hemostix container just completely cuts off with human body completely,
Even if can not produce injury to human body if having bacterium in negative pressure hemostix container.
The blood lancet device of the embodiment of the present invention includes the vein blood taking needle for being pierced into blood sampling, is adopted for connecting negative pressure
The pipe close puncture needle of blood vessel and the interconnecting piece of the connection vein blood taking needle and pipe close puncture needle；The interconnecting piece includes connecting successively
Blood sampling needle handle, connection flexible pipe and any one of them venous samples acquisition valve for preventing reverse-flow device connect；The blood sampling needle handle with it is quiet
Arteries and veins blood taking needle connects, and the puncture needle is connect with venous samples acquisition valve for preventing reverse-flow device, and venous samples acquisition is anti-reverse
Flow valve device is provided with elastic one-way valve, for preventing the blood back flow of extraction from returning vein.
For blood lancet device provided by the invention in blood collection procedure, valve for preventing reverse-flow device is open, the blood energy of extraction
Enough by interconnecting piece, after blood collection, valve for preventing reverse-flow device is closed immediately, and the blood of extraction can not be inverse by interconnecting piece
Stream.By the setting of valve for preventing reverse-flow device, can ensure extraction blood can only from vein blood taking needle by interconnecting piece to pipe close
The direction of puncture needle is flowed, and the blood another mistake of extraction is effectively prevent to flow back in human body, the blood for avoiding microbiological contamination enter human body and
Human body is damaged.Additionally it is possible to remove the aseptic process to blood collecting containers entirety from, it is cost-effective.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of venous samples acquire valve for preventing reverse-flow device, which is characterized in that the venous samples acquire valve for preventing reverse-flow device packet
It includes：Centre is provided with the first connecting seat of through-hole, the elastic valve for preventing reverse-flow on the first connecting seat, and is connect with first
Seat cooperatively forms the second connecting seat of the cavity for accommodating the elastic valve for preventing reverse-flow；Second connecting seat and the first connecting seat card
Close connection;It is provided with the through-hole being in communication with the outside on second connecting seat；
It is described elasticity valve for preventing reverse-flow include：In the valve body of hollow setting, the mounting portion with chimb in valve body rear end is set,
The valve port triangular in shape in the section of valve body front end is set, and the valve port end is set as default conditions and is connect in normally off
The linear slotting structure of negative pressure pressure in opened condition is received,
And the second connecting seat cavity interior walls be provided with it is described to prevent for pressing the chimb of the elastic valve for preventing reverse-flow
The protrusion that elastic valve for preventing reverse-flow shakes.
2. venous samples according to claim 1 acquire valve for preventing reverse-flow device, which is characterized in that first connecting seat with
Second connecting seat is cooperatively formed for accommodating the cavity for installing the elastic valve for preventing reverse-flow, and the protrusion is to be arranged in the sky
A bulge loop on cavity wall.
3. venous samples according to claim 1 acquire valve for preventing reverse-flow device, which is characterized in that the protrusion is setting
A bulge loop wall or the protrusion on the cavity inner wall are to be arranged in the second connecting seat cavity interior walls at least two
A salient point.
4. venous samples according to claim 1 acquire valve for preventing reverse-flow device, which is characterized in that the valve body is in
The valve body or the valve body to be arranged in hollow square of the setting of void column shape or the valve body to be arranged in polygon.
5. venous samples according to claim 1 acquire valve for preventing reverse-flow device, which is characterized in that the first connecting seat packet
It includes：For being socketed the first boss for installing the elastic valve for preventing reverse-flow, setting the first boss opposite side and with it is described
The integrally formed first interface of first boss, first interface with the connection flexible pipe for being connected with blood collecting puncture needle for connecting；And
Protrusion is formed with for covering the convex hole for closing the second connecting seat cavity between the first boss and first interface.
6. venous samples according to claim 1 acquire valve for preventing reverse-flow device, which is characterized in that the second connecting seat packet
It includes：For cooperatively forming the cavity for accommodating the elastic valve for preventing reverse-flow cavity with the first connecting seat, it is connected to the cavity
The opposite other side and with the integrally formed second interface of the cavity.
7. venous samples according to claim 6 acquire valve for preventing reverse-flow device, which is characterized in that from outer inside the cavity
It inwardly sets gradually and is useful for socket mounted on the first round socket part of first connecting seat one end and is used to form described
The second round socket part of the elastic valve for preventing reverse-flow cavity is accommodated, the internal diameter of the described second round socket part is less than the first circle
Socket part, and formed in the described second round socket part and the first round socket part junction for pressing the elastic counterflow-preventing
Protrusion of the chimb of valve to prevent the elastic valve for preventing reverse-flow from shaking.
8. venous samples according to claim 6 acquire valve for preventing reverse-flow device, which is characterized in that set in the second interface
It is equipped with the connector being connect for the pipe close puncture needle with negative tube；It is respectively set on first connecting seat and the second connecting seat
There is the through-hole being in communication with the outside；The elasticity valve for preventing reverse-flow is the unidirectional valve for preventing reverse-flow of food grade silicone.
9. a kind of blood lancet device, which is characterized in that including：Vein blood taking needle for being pierced into blood sampling, is adopted for connecting negative pressure
The pipe close puncture needle of blood vessel and the interconnecting piece of the connection vein blood taking needle and pipe close puncture needle；
The interconnecting piece includes sequentially connected blood sampling needle handle, connection flexible pipe and claim 1-8 any one of them venous blood
Sample acquires valve for preventing reverse-flow device；
The blood sampling needle handle is connect with vein blood taking needle, and the puncture needle is connect with venous samples acquisition valve for preventing reverse-flow device, institute
The venous samples acquisition valve for preventing reverse-flow device stated is provided with elastic one-way valve, for preventing the blood back flow of extraction from returning vein.
10. blood lancet device according to claim 9, which is characterized in that be arranged with blood taking needle outside the vein blood taking needle
Protective case, the pipe close puncture needle are arranged with puncture needle protective case outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248390.2A CN108403128A (en) | 2018-03-24 | 2018-03-24 | A kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810248390.2A CN108403128A (en) | 2018-03-24 | 2018-03-24 | A kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108403128A true CN108403128A (en) | 2018-08-17 |
Family
ID=63133392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810248390.2A Pending CN108403128A (en) | 2018-03-24 | 2018-03-24 | A kind of venous samples acquisition valve for preventing reverse-flow device and blood lancet device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108403128A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109430350A (en) * | 2018-11-28 | 2019-03-08 | 孙全庆 | A kind of hygienic environment-protecting knife killing pig |
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| CN204336933U (en) * | 2014-11-14 | 2015-05-20 | 陆盘中 | Counterflow-preventing blood taking needle |
| CN107440727A (en) * | 2017-08-28 | 2017-12-08 | 刘贞宽 | Disposable venous blood collect needle（Anti-reverse flow pattern） |
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| US3874367A (en) * | 1972-06-29 | 1975-04-01 | Becton Dickinson Co | Valved blood sampling needle assembly |
| CN200960351Y (en) * | 2006-05-25 | 2007-10-17 | 株式会社榎本 | Indwelling needle capable of preventing counter-flow effectively |
| CN101077433A (en) * | 2006-05-25 | 2007-11-28 | 株式会社榎本 | Lien needle capable of preventing countercurrent flow effectively |
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| CN109430350A (en) * | 2018-11-28 | 2019-03-08 | 孙全庆 | A kind of hygienic environment-protecting knife killing pig |
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Application publication date: 20180817 |