CN208031218U

CN208031218U - Blood filtration harvester

Info

Publication number: CN208031218U
Application number: CN201820729036.7U
Authority: CN
Inventors: 刘岩
Original assignee: Institute of Animal Science of CAAS
Current assignee: Institute of Animal Science of CAAS
Priority date: 2018-05-16
Filing date: 2018-05-16
Publication date: 2018-11-02
Anticipated expiration: 2028-05-16

Abstract

The utility model provides a kind of blood filtration harvester, there is negative pressure blood-taking tube, enters port equipped with blood in the top of the negative pressure blood-taking tube, further includes：Partition board in the negative pressure blood-taking tube is set, one end is connect with the madial wall of the negative pressure blood-taking tube, the other end and heparin tube madial wall formed for liquid by circulation notch；Positioned at the partition board upper end, the filter chamber equipped with filtration module is formed with blood sampling port；The sensing chamber equipped with Test paper positioned at partition board lower end；Wherein, the filter chamber is connected to by the circulation notch with the sensing chamber.The utility model can be carried out at the same time blood collection, blood filtration, blood testing, easy to use, reliable, can dramatically simplify the operation sequence that traditional test paper uses, and a variety of Test papers can be placed in sensing chamber, synchronous to detect a variety of antigens.In addition, the utility model also has many advantages, such as that simple in structure, easy to use, experimental result is reliable.

Description

Blood filtration harvester

Technical field

The utility model is related to experimental instrument and equipment technical fields, more specifically, more particularly to a kind of filtering type blood Sample collecting device.

Background technology

In life science, the use of test paper is more universal, ordinary circumstance, and test paper is packed using independent, Before use, staff needs first to be sampled, for example, blood or other types body fluid acquisition, by sample after the completion of sampling It being loaded in clean vessel, then test paper packaging is opened again and is dipped in sample, a period of time takes out test paper later, Changed to obtain preliminary testing result according to test paper.

There are the following problems for the use of traditional test paper：1, it needs to be further provided with a clean vessel, will result in this way The inconvenience that test paper uses；2, after taking sample, sample exposes in air, not only be easy to cause the pollution of sample in this way, may be used also Sample can be caused rotten, influence testing result；3, for the test paper of specific antigen in some detection serum or blood plasma, lead to It needs first to be filtered blood in the case of often or centrifugal treating, virtually just increases testing process again in this way and test paper uses The fussy degree of operation.4, for certain blood samples that may carry communicable disease, sample holds in replacing container processes Environmental pollution and the infection of operating personnel are easily caused, biological safety is lacked.

Chinese patent literature CN206228353U discloses a kind of negative pressure hemostix, and the device is by being arranged in heparin tube Interior filter membrane realizes the filtering of blood, and the collection of filtrate is realized by the collecting pipe being connect with heparin tube spiral, utilizes collection Test strips in pipe are detected filtrate, it is seen then that and the device equally may be implemented blood filtering, collect and detect, still, Complicated since the device is the structure that two kinds of structure spirals are formed together, processing and manufacturing is relatively complicated, of high cost.

Utility model content

Existing in the prior art complicated in order to solve, the high technical problem of manufacturing cost, the utility model provides One kind is simple in structure, easy to use, testing result is reliable, and the test paper class detection device of low processing cost, the device is integrated Formula structure realizes filtering, acquisition and the detection of blood by the way that filtration module, partition board and test paper in the device is arranged.

To realize that the technical purpose of the utility model, the utility model provide a kind of blood filtration harvester, including There is negative pressure blood-taking tube, blood sampling port is offered at the top of the negative pressure blood-taking tube, further includes：

Partition board in the negative pressure blood-taking tube is set, and one end is connect with the madial wall of the negative pressure blood-taking tube, another End with heparin tube madial wall formed for liquid by circulation notch；

Positioned at the partition board upper end, the filter chamber equipped with filtration module is formed with blood sampling port；

The sensing chamber equipped with Test paper positioned at partition board lower end.

Wherein, the filter chamber is connected to by the circulation notch with the sensing chamber.

In particular, the partition board is obliquely installed, the one end being connect with madial wall is higher than forms circulation notch with madial wall One end.

Wherein, the angle of inclination of the partition board and the madial wall is more than 0 °, is less than 90 °.

On the one hand being obliquely installed for partition board can stop that filtrate flows directly into negative pressure hemostix bottom of the tube, on the other hand, can be with Play the role of water conservancy diversion and unhurried current, so that filtrate is passed through circulation notch along partition board and slowly enter sensing chamber, since circulation notch is The end face of partition board is formed with negative pressure hemostix tube wall, therefore when filtrate along tube wall after circulation notch by that can slowly enter inspection Room is surveyed, the liquid level of the filtrate in sensing chamber is gradually risen by blood sampling bottom of the tube.

When angle of inclination is bigger, resistance flowing effect is better, and the speed that filtrate enters sensing chamber is slower, conversely, working as inclination angle Degree gets over hour, and resistance flowing effect is poorer, and the speed that filtrate enters sensing chamber is faster.

Wherein, the one side of the partition board towards the blood sampling port is smooth flat structure.

Wherein, card slot, the detection are provided on indoor in the detection and madial wall positioned at the negative pressure blood-taking tube One end of test paper is arranged in the card slot, and the other end of the Test paper and the madial wall of the negative pressure blood-taking tube offset.

Preferably, test paper is toppled in order to prevent, and the utility model is provided with supporting rod, the supporting rod on Test paper The other end setting of the Test paper is extended to from one end of the Test paper.

In particular, the filtration module is horizontally set in the negative pressure blood-taking tube, including multiple filter membranes, whole institutes It states filter membrane and is directed toward on the direction of the negative pressure blood-taking tube other end from the blood sampling port and enumerate setting successively.

In particular, seamless can be enumerated between the multiple filter membrane, can also gap enumerate.

Preferably, the multiple filter membrane is enumerated using gap.

In particular, being directed toward on the direction of the negative pressure blood-taking tube other end from the blood sampling port, being opened on the filter membrane If the aperture of filter hole be gradually reduced.

Since the utility model is provided with the filter membrane that multiple filtration aperture is gradually reduced, under the action of negative pressure, blood When liquid is filtered, the filtering membrane aperture of filtering blood is larger at first, and blood filtration is fast, will not cause to impact, and filters Larger molecule plays cushioning effect, similarly, when blood continues the second layer or third layer mistake for second layer filtering instead When filter, impact force gradually decreases, and therefore, the percussion of blood will not only damage filtration module, can accelerate instead With enhancing filter effect.

Wherein, the flexible caused destruction of filtration module, the utility model are set on the outside of the filtration module in order to prevent It is equipped with catch net.

In particular, the different mistakes of blood may be implemented by the way that the specification of filter membrane in filtration module is arranged for the utility model Filter, those skilled in the art can be adjusted the specification of filter membrane according to type blood.

In particular, the utility model can also be real by the film of different nature being arranged between filtration module and catch net The different filterings of existing blood, such as be provided with for plasma fibrinogen between catch net on the outside of the filtration module The adsorbed film absorbed and filter, so that it may to realize the filtering of serum.

Especially, each filter membrane in the filtration module can be planar structure, can also be fold membrane structure, protect The structure of protecting wire net and adsorbed film is adapted with the structure of filter membrane.

When filter membrane is fold membrane structure, the contact area of filter membrane and blood can be increased, increase filter efficiency.

Preferably, the negative pressure blood-taking tube is medical grade plastic negative pressure blood-taking tube or medical glass negative pressure blood-taking tube；It is described Negative pressure blood-taking tube is an integral structure.

Preferably, the catch net is corrosion resistant metal net or medical plastic net.

Advantageous effect

1, the utility model is designed by integral structure, simplify it is existing integrate filtering, acquisition, detection it is negative The structure of heparin tube is pressed, and easy to use, processing cost is low, and universality is wide.

2, the utility model is made in negative pressure blood-taking tube by a partition board being arranged in negative pressure blood-taking tube there are two formation Perforation but mutually independent space, i.e. filter chamber and sensing chamber, prevent filtrate be directly entered sensing chamber and in pollution detection room Test strips.

3, the utility model not only realizes the filtering of blood, but also also act as by the way that filtration module is arranged in filter chamber Buffering effect, effectively prevent filter paper due to being ruptured caused by impact force, also, since filtration module has multiple filterings Film, and filter hole is gradually reduced, therefore, more preferably, testing result is reliable for filter effect.

Description of the drawings

Fig. 1 is the structural schematic diagram of the blood filtration harvester of the utility model embodiment 1, wherein Fig. 1 a are whole Structural schematic diagram, Fig. 1 b are the enlarged drawing of A；

Fig. 2 is the enlarged drawing of B in the utility model embodiment 1, wherein Fig. 2 a are the overall structure diagrams of enlarged drawing, Fig. 2 b are that supporting rod cross section is prismatic structure, and Fig. 2 c are supporting rod cross section polyhedral structure；

Fig. 3 is the structural schematic diagram of the blood filtration harvester of the utility model embodiment 2, and wherein Fig. 3 a are whole knots Structure schematic diagram, Fig. 3 b are the schematic enlarged-scale view of C；

Fig. 4 is the structural schematic diagram of the blood filtration harvester of the utility model embodiment 3, and wherein Fig. 4 a are whole knots Structure schematic diagram, Fig. 4 b are the schematic enlarged-scale view of D；

Fig. 5 is that the serum of the utility model embodiment 4 filters the structural schematic diagram of harvester, wherein Fig. 5 a are integrally tied Structure schematic diagram, Fig. 5 b are the partial enlargement structural representation of E.

Specific implementation mode

The embodiment of the utility model is described in further detail with reference to the accompanying drawings and examples.Following embodiment For illustrating the utility model, but cannot be used for limiting the scope of the utility model.

In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term The orientation of the instructions such as "upper", "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " or position are closed System is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of describing the present invention and simplifying the description, rather than Indicate or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot It is construed as a limitation of the present invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and cannot It is interpreted as indicating or implying relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " phase Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can Can also be electrical connection to be mechanical connection；It can be directly connected, it can also be indirectly connected through an intermediary.For this For the those of ordinary skill in field, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.

Embodiment 1

Blood filtration harvester provided by the utility model is based on existing including that negative pressure blood-taking tube a and the negative pressure are adopted It offers on the basis of blood enters the negative pressure blood-taking tube of port b and improves at the top of blood vessel, need not be in negative pressure hemostix In pipe in the case of setting buffer unit, high efficiency filter, acquisition and the detection of blood equally may be implemented, and filter paper will not be damaged.

As shown in Figure 1, blood filtration harvester provided by the utility model is tied to improve the whole of negative pressure blood-taking tube a Structure intensity uses integral structure design, specifically includes the partition board 1 being arranged in the negative pressure blood-taking tube a, one end and institute State the madial wall connection of negative pressure blood-taking tube, the other end and heparin tube madial wall formed for liquid by circulation notch c；It is located at The partition board upper end forms the filter chamber 2 equipped with filtration module with blood sampling port；It is equipped with Test paper positioned at partition board lower end Sensing chamber 3；Wherein, the filter chamber 2 is connected to by the circulation notch c with the sensing chamber 3.

In a specific implementation mode of the utility model, in order to improve the stability of partition board 1, medical plastic may be used Material is integrally formed, and can also use the structure design of other light materials.

Specifically, the partition board 1 is obliquely installed in heparin tube, wherein one end that partition board is connect with madial wall be higher than with Madial wall forms one end of circulation notch, specifically, the partition board 1 and the angle of inclination of the junction of the madial wall are more than 0 °, it is less than 90 °, the one side of partition board towards the blood sampling port is smooth flat structure.

On the one hand being obliquely installed for partition board can stop that filtrate flows directly into negative pressure hemostix bottom of the tube, cause splash, another Aspect can play the role of water conservancy diversion and unhurried current, so that filtrate is passed through circulation notch along partition board and slowly enter sensing chamber, due to stream Straight slot mouth is that the end face of partition board and negative pressure hemostix tube wall are formed, therefore meeting is slow along tube wall after filtrate is by circulation notch Slow-motion enters sensing chamber, and the liquid level of the filtrate in sensing chamber is gradually risen by blood sampling bottom of the tube；When partition board 1 and the madial wall Junction angle of inclination it is bigger when, resistance flowing effect is better, and the speed that filtrate enters sensing chamber is slower, conversely, working as inclination angle Degree gets over hour, and resistance flowing effect is poorer, and the speed that filtrate enters sensing chamber is faster.

Specifically, filter chamber 2 includes filtration module 21 and the catch net 22 being arranged on the outside of filtration module.

More specifically, filtration module 21 is horizontally set in negative pressure blood-taking tube a, wherein filtration module is multiple filter membranes Composition, at least one, whole filter membrane autobloods enters port b and is directed toward on the direction of the negative pressure blood-taking tube a other ends successively Setting is enumerated, mode of enumerating is the mode that gap is enumerated, and each filter membrane in filtration module is directed toward negative pressure from blood sampling port b and adopts The aperture of the filter hole opened up on the direction of the blood vessel a other ends is gradually reduced (as shown in Fig. 1 b or 2b).Catch net 22 is corrosion resistant Lose metal mesh structure design or the design of medical plastic web frame, the bearing capacity for improving filtration module, anti-Hemostatic Oral Liquid Filter membrane rupture caused by quality is excessive.

Since the utility model is provided with the filter membrane that multiple filtration aperture is gradually reduced, under the action of negative pressure, blood When liquid enters negative pressure blood-taking tube and is filtered, the filtering membrane aperture of filtering blood is larger at first, and blood filtration is fast, larger in blood Molecule is trapped on filter membrane, therefore blood will not cause to impact to filter membrane, and playing buffering instead for second layer filtering makees With similarly, when blood continues the second layer or third layer filters, molecule is trapped in successively on corresponding filter membrane, mistake The impact force of filter membrane gradually decreases, and therefore, the impact that blood generates under the action of negative pressure will not only cause brokenly filtration module It is bad, it can accelerate and enhance instead filter effect, since blood is flowing through multiple filtration film, realize multiple filtration purification, mistake It is preferable to filter effect.

More specifically, as illustrated in fig. 1 and 2, filter chamber 3 includes inspection support plate 31 and card slot 32, and support plate 31 is for putting Test paper.More specifically, card slot 32 is set on the inner wall of the bottom of negative pressure blood-taking tube a, in order to improve test paper in sensing chamber 3 Interior stability, card slot are shaped on the inner wall of negative pressure hemostix bottom of the tube, and the slot of card slot is at an angle to the horizontal surface, When 31 one end of support plate is arranged in card slot, the other end of support plate can be along the inclined direction of card slot and negative pressure blood-taking tube 1 madial wall offsets.

Test paper can limber up after having infiltrated blood sample and can not stand upright in order to prevent, and the utility model is provided with support Plate 31, support plate 31 are made of transparent material, preferably, support plate 31 is transparent glass material, more specifically, support On plate 31 as support end face 311 be planar structure, other end 312 be arc-shaped structure (as shown in Figure 2 a), will try After paper is placed on the supporting surface of support plate, the testing result of test paper can be amplified using arc-shaped one end, convenient for observation test paper Variation.

Preferably, support plate 21 can also use any material that can realize that amplification test paper changes to be made.

Preferably, the other end 312 of support plate 21 can also be arranged to any can realize amplification test paper The structure of variation, such as prismatic structure, polyhedral structure (as shown in figs. 2 b and 2 c).

Preferably, test paper falls off from support plate in order to prevent, the binder for not influencing testing result can be used One end of test paper is pasted on the supporting plate, one end of stickup is one end that test paper enters port b close to blood.

Preferably, the card slot 32 can be multiple, similar and different Test paper is placed respectively, for detecting One or more different antigens.

Embodiment 2

As shown in figure 3, except to be that contact enumerates other same as Example 1 for the mode of enumerating between filter membrane.

Embodiment 3

As shown in figure 4, except filtration module 21 and catch net 22 are set as pleated structure, filter chamber 2 further includes by filtration module It is connected to outside the connector 23 on heparin tube a with catch net, other are same as Example 1.

The side end face of filter membrane group 21 and catch net 22 is fixed on connector 23, and cohesive side may be used in fixed form Formula, connector 23 be with negative pressure blood-taking tube a same materials, can also be with being medical plastic material, connector 23 is fixed on negative again On the madial wall for pressing heparin tube a, cohesive mode may be used in fixed form, can also use any other one kind that can will connect Fitting is fixed on the mode of negative pressure hemostix inside pipe wall, such as the mode of welding.

In the present embodiment, each filter membrane of filtration module 21, which is set as pleated structure, can increase the expansion of filter membrane Face, to improve the filter efficiency of the utility model.The pleated structure of catch net 22 can squeeze to be formed by flat netted board, protect Protecting wire net 22 can increase the contact area between filtration module 21 using pleated structure, to improve the protective effect to film.

Embodiment 4

As shown in figure 5, except being provided between filter membrane group 21 and catch net 22 for being inhaled to plasma fibrinogen Attached filtering adsorbed film 23, other are identical as the structure of embodiment 1 or embodiment 2, to realize the filtering, collection and inspection of serum It surveys.

It should be noted that adsorbed film can also be substituted by the film of other substances in absorption blood, to realize different work( The filtering acquisition and detection of energy

The utility model offer one kind is simple in structure, easy to use, testing result is reliable, the test paper class of low processing cost Detection device, the device are an integral structure, and the mistake of blood is realized by the way that filtration module, partition board and test paper in the device is arranged Filter, acquisition and detection.A variety of Test papers can be placed in sensing chamber, it is synchronous to detect a variety of antigens.

The embodiments of the present invention provide for the sake of example and description, and are not exhaustively or to incite somebody to action The utility model is limited to disclosed form.Many modifications and variations are aobvious and easy for the ordinary skill in the art See.Selection and description embodiment are and to make this field to more preferably illustrate the principles of the present invention and practical application Those of ordinary skill is it will be appreciated that various embodiments with various modifications of the utility model to design suitable for special-purpose.

Claims

1. a kind of blood filtration harvester, includes negative pressure blood-taking tube, in the top of the negative pressure blood-taking tube be equipped with blood into Inbound port, which is characterized in that further include：

Partition board in the negative pressure blood-taking tube is set, one end is connect with the madial wall of the negative pressure blood-taking tube, the other end with Heparin tube madial wall formed for liquid by circulation notch；

The sensing chamber equipped with Test paper positioned at partition board lower end；

2. the apparatus according to claim 1, which is characterized in that the partition board is obliquely installed, wherein partition board connects with madial wall The one end connect is higher than one end that circulation notch is formed with madial wall.

3. the apparatus according to claim 1, which is characterized in that the one side of the partition board towards the blood sampling port is light Sliding planar structure.

4. the apparatus according to claim 1, which is characterized in that in detection interior and be located at the negative pressure blood-taking tube Madial wall on be provided with card slot, one end of the Test paper is arranged in the card slot, the other end of the Test paper It offsets with the madial wall of the negative pressure blood-taking tube.

5. the apparatus according to claim 1, which is characterized in that be provided with supporting rod, the support on the Test paper Bar extends to the other end setting of the Test paper from one end of the Test paper.

6. the apparatus according to claim 1, which is characterized in that the filtration module is horizontally set at the negative pressure blood-taking tube Interior, including multiple filter membranes, whole filter membranes is directed toward the side of the negative pressure blood-taking tube other end from the blood sampling port Setting is enumerated successively upwards.

7. device according to claim 6, which is characterized in that it is another to be directed toward the negative pressure blood-taking tube from the blood sampling port The aperture of the filter hole opened up on the direction at end, on the filter membrane is gradually reduced.

8. the apparatus according to claim 1, which is characterized in that be provided with catch net on the outside of the filtration module.

9. device according to claim 8, which is characterized in that be arranged between the filtration module outside and catch net useful In the adsorbed film absorbed and filter to plasma fibrinogen.

10. according to any devices of claim 1-9, which is characterized in that each filter membrane in the filtration module is equal For fold membrane structure, the adsorbed film fold membrane structure, the pleated structure of the catch net and the filter membrane or adsorbed film phase Adaptation.