CN203591816U

CN203591816U - Continuous pipetting device for pipette

Info

Publication number: CN203591816U
Application number: CN201320766690.2U
Authority: CN
Inventors: 吴渊虬
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-11-29
Filing date: 2013-11-29
Publication date: 2014-05-14
Anticipated expiration: 2023-11-29

Abstract

The utility model discloses a continuous pipetting device for a pipette, and belongs to the technical field of experiment analysis tools. The pipetting device comprises a pipetting gun, wherein a pressing hand is arranged at one end of the pipetting gun; a gun head joint is arranged at the other end of the pipetting gun; the continuous pipetting device comprises a gun head; when in use, the gun head is connected with the gun head joint in a matching manner. The pipetting device is characterized in that a mother liquor container filled with mother liquid in a sealing state is arranged on the gun head; the mother liquid container is provided with a mother liquid leading-out connection pipe used for introducing the mother liquid in the mother liquid container into a gun head cavity of the gun head to lead the liquid out from a gun head liquid outlet of the gun head; the leading-out connection pipe is integrally connected with the gun head and is communicated with the gun head cavity. The utility mole has the advantages that the continuous pipetting device is convenient for application and simplified in structure, convenient for manufacture and use, portable and provided with good application flexibility, and contamination to mother liquid is avoided and the accuracy of analysis results is ensured, so that improvement on pipetting efficiency and effect can be facilitated.

Description

The continuous liquid-transfering device that pipettor is used

Technical field

The utility model belongs to experimental analysis utensil technical field, is specifically related to the continuous liquid-transfering device that a kind of pipettor is used.

Background technology

Pipettor widely uses in the occasion such as laboratory, laboratory, sample analysis chamber, and can be seen in disclosed Chinese patent literature, " batch liquid-removing apparatus for chemical test " and " the single track adjustable pipette " that CN202460662U provides of typical as Granted publication CN2068418U recommendation, etc.

The technical scheme of " the continuous liquid-transfering device that pipettor is used " that the shortcoming that the pipettor that is not limited to exemplify above exists is recommended by application for a patent for invention publication No. CN103316726A is eliminated, this CN103316726A objectively can embody 5 technique effects recording in the technique effect hurdle of its description, specifically can be referring to the 0003rd section to 0014 section, the description of this patent application, but still there is following shortcoming in this patent application: one, because the rifle head for connecting with liquid-transfering gun (patent application claims pipettor body) (patent application claims to take over) does not have self and stores the function of mother liquor, thereby need to the mother liquor container that fill mother liquor be connected by means of a liquid guiding tube in use to (the 0025th section, description) with rifle head, thereby bring inconvenience to use, they are two years old, owing to should take into account connecting of rifle head and liquid-transfering gun under use state, take into account again the fluid effect of rifle head, also to consider the connect effect of rifle head with liquid guiding tube, thereby need on rifle head, form a liquid guiding tube interface reliably continuing for confession liquid guiding tube, thereby make the structure of rifle head be tending towards complicated, they are three years old, due to before enabling continuous liquid-transfering device, after being connected, rifle head and liquid-transfering gun need then the liquid guiding tube interface on liquid guiding tube and rifle head to be connected, then just be able to the mother liquor in mother liquor container to be assigned in vitro through rifle head (under the operation of pressing hand on liquid-transfering gun), and being connected by completing by hand of liquid guiding tube and liquid guiding tube interface, thereby inefficient operation not only, and liquid guiding tube and liquid guiding tube interface are pegged graft in the process coordinating, operator's finger (although wearing gloves) contacts with liquid guiding tube interface unavoidably, thereby there is the anxiety of pollution, the accuracy of impact analysis result, its four,, thereby be unfavorable for field condition analysis and/or carry with rifle head easily because rifle head self is without storing the function of mother liquor as aforementioned, they are five years old, because the mother liquor in mother liquor container causes rifle head by liquid guiding tube, thereby be not enough to embody absolute sealing (sealing) to mother liquor, be that deficiency is so that mother liquor makes mother liquor have the anxiety of bad change with extraneous reliable completely cutting off, especially, when connecting of the liquid guiding tube interface on liquid guiding tube and rifle head lost while there is getting loose situation in the process reliably particularly moving together with liquid guiding tube at rifle head, so easily cause mother liquor to leak, not only cause waste, and impact moves pipe (moving to test tube from mother liquor container) efficiency and effect.

In addition, in the investigation of type thing, DNA sample fragment is analyzed as example, aforesaid mother liquor is main but be not limited to refer to: adsorption liquid, rinsing liquid (ethanol), eluent (TC is called eluent), lysate, and even silica bead, etc., these materials are stored in container separately conventionally, if thereby use same rifle head, can produce so the phenomenon that mutual interference is polluted.

For above-mentioned prior art, be necessary to be improved, for this reason, the applicant has done lasting and useful exploration and design, finally formed technical scheme described below, and taking under corresponding secrecy provision, doing test in the laboratory of the applicant's workplace, it is practicable that result proves.

Summary of the invention

Task of the present utility model is to provide a kind of contribute in use to cause rifle head and use the convenience embodying while using being stored in mother liquor in mother liquor container without relying on liquid guiding tube, be conducive to simplify overall structure and use convenient manufacture and use, be of value to and avoid mother liquor to produce pollution and use guarantee precision of analysis, have and be easy to carry and use the flexibility embodying in use procedure, have and be good at making mother liquor in the absolute isolation in the external world and significantly improved and move the continuous liquid-transfering device that the pipettor of tube efficiency and effect is used.

Task of the present utility model completes like this, the continuous liquid-transfering device that a kind of pipettor is used, described pipettor comprises a liquid-transfering gun, one end of this liquid-transfering gun has the hand of pressing, and other end formation has a rifle head interface, described continuous liquid-transfering device comprises rifle head, this rifle head connects with described rifle head interface under use state, be characterised in that: on described rifle head, form and have one to be filled with the mother liquor container of mother liquor with sealing state, this mother liquor container has one and draws adapter for the mother liquor in its mother liquor container chamber being introduced to the mother liquor of drawing for the rifle head fluid hole of rifle head in the rifle head cavity of rifle head, this mother liquor is drawn to take over and is connected with the first body of rifle and communicates with described rifle head cavity.

In a specific embodiment of the present utility model, under described rifle head use state towards one end of described liquid-transfering gun and the inwall that is positioned at described rifle head cavity form and have a filter pad step, on this filter pad step, be provided with a filter pad, at the other end of rifle head and be positioned at equally rifle head cavity and be provided with a rifle head liquid valve.

In another specific embodiment of the present utility model, described mother liquor container has an air inlet, on air inlet, be equipped with an air intake valve, draw at described mother liquor on the pipeline of adapter and be provided with a tapping valve and a liquid-resistant valve, wherein: liquid-resistant valve is between tapping valve and described rifle head.

In another specific embodiment of the present utility model, described mother liquor container is integrally formed structure corresponding to a side of the short transverse of described rifle head and with rifle head.

In another specific embodiment of the present utility model, described mother liquor container be formed in spiral status around the circumferencial direction of described rifle head rifle head short transverse middle part and the middle part of using the short transverse that makes rifle head is positioned at described mother liquor container chamber.

Also have in a specific embodiment of the present utility model, described mother liquor container is formed on the outer wall of rifle head with coiled state around the short transverse of described rifle head.

More of the present utility model and in a specific embodiment, described mother liquor container is with helical form and be formed in the top of the short transverse of described rifle head with vacant state.

In of the present utility model and then a specific embodiment, described rifle head liquid valve is check valve.

Of the present utility model again more and in a specific embodiment, described liquid-resistant valve is check valve.

In again of the present utility model and then a specific embodiment, the volume of the rifle head cavity of described rifle head is 0.1-1ml; The volume in the mother liquor chamber of described mother liquor container is 0.2-15ml.

The technique effect of the technical scheme that the utility model provides is: owing to directly forming and having the mother liquor container that is filled with mother liquor on rifle head, thereby can draw and take over the rifle head cavity of the mother liquor in mother liquor container chamber being introduced to rifle head by the mother liquor of mother liquor container in use, thereby rifle head is connected with the mother liquor container being equipped with separately by means of liquid guiding tube without resembling prior art, it is very convenient to use; Due to mother liquor container is directly formed to the structure that one is connected with rifle head, thereby not only can simplified structure but also can conveniently manufacture and use; Owing to having abandoned the liquid guiding tube in prior art, thereby can avoid mother liquor to produce and pollute, guarantee precision of analysis; Due to mother liquor container and rifle head is integrally formed structure and in mother liquor container sealing be in advance filled with mother liquor, thereby easy to carry and there is good use flexibility; Because the mother liquor in mother liquor container is isolated from the outside in reliable sealing state, thereby contribute to raising to move tube efficiency and effect.

Accompanying drawing explanation

Fig. 1 is embodiment of the present utility model and application examples schematic diagram.

Fig. 2 is the detailed structure view of the mother liquor container shown in Fig. 1 and rifle head.

Fig. 3 is the second embodiment schematic diagram of the present utility model.

Fig. 4 is the 3rd embodiment schematic diagram of the present utility model.

Fig. 5 is the 4th embodiment schematic diagram of the present utility model.

The specific embodiment

Embodiment 1:

Refer to Fig. 1 and Fig. 2, figure 1 illustrates the liquid-transfering gun 1 as the structural system of pipettor, one end of this liquid-transfering gun 1 be the top of location status shown in Fig. 1 have one for for operator's thumb press press hand 11, and the lower end that the other end is location status shown in Fig. 1 forms and has a rifle head interface 12.Because liquid-transfering gun 1 belongs to known technology, for example can be referring to the description of aforesaid Chinese patent Granted publication CN2068418U, therefore the applicant no longer repeats it.

Provide the rifle head 2 as the structural system of continuous liquid-transfering device of the present utility model, this rifle head 2 connects (plug-in connects) with the rifle head interface 12 of aforementioned liquid-transfering gun 1 under use state, the inwall formation that towards one end of liquid-transfering gun 1 is the upper end of location status shown in Fig. 1 and Fig. 2 and the rifle head cavity 21 that is positioned at rifle head 2 under these rifle head 2 use states has a filter pad step 211, is provided with a filter pad 2111 on this filter pad step 211.When rifle head 2 connects with rifle head interface 12, between filter pad 2111 and the distal end faces of rifle head interface 12, maintain gap, that is to say, in practical operation, the distal end faces of the rifle head interface 12 of rifle head 2 does not contact with filter pad 2111.Be the lower end of location status shown in Fig. 1 and Fig. 2 and be positioned at equally rifle head cavity 21 and be provided with a rifle head liquid valve 212 at the other end of rifle head 2, this rifle head liquid valve 212 is check valve, and preferably use diaphragm to serve as, enter the mother liquor of rifle head cavity 21 through rifle head liquid valve 212(opening) after draw and move in test tube from rifle head fluid hole 23, can be referring to above mentioned CN103316726A about the concept of test tube.

The technical essential of the technical scheme providing as the utility model: directly form on aforesaid rifle head 2 and have one to be filled with the mother liquor container 3 of mother liquor with sealing state, one end of this mother liquor container 3 is that the upper end formation of shown position state has an intake interface 33 communicating with the mother liquor container chamber 31 of mother liquor container 3, and on this intake interface 33, be provided with an air intake valve 331, and the lower end that is shown position state at the other end of mother liquor container 3 forms and has one to use the mother liquor of drawing for rifle head fluid hole 22 and draw adapter 32 for mother liquor in mother liquor container chamber 31 being introduced in the rifle head cavity 21 of rifle head 2, drawing adapter 32 by this mother liquor makes mother liquor container 3 and rifle head 2 be integrally formed structure, and the mother liquor container chamber 31 of mother liquor container 3 is communicated with rifle head cavity 21.From the present embodiment, mother liquor container 3 is corresponding to a side of the short transverse of rifle head 2, and forms longitudinally parallel state and rifle head 2 with rifle head 2 and be integrally formed structure.

Please continue to refer to Fig. 1 and Fig. 2, draw on the pipeline of taking over 32 and be provided with a tapping valve 321 and a liquid-resistant valve 322 at aforementioned mother liquor, and liquid-resistant valve 322 is between tapping valve 321 and rifle head 2, and this liquid-resistant valve 322 is check valve, specifically as the description to rifle head liquid valve 212.

Take analyzing DNA fragment as example, aforementioned mother liquor comprises: adsorption liquid, rinsing liquid, eluent, lysate and silica bead, because the consumption of these materials is in actual use different, therefore for fear of waste, the volume of the rifle head cavity 21 of aforementioned rifle head 2 is designed to 0.1-1ml, and the volume of the mother liquor container chamber 31 of mother liquor container 3 is designed to 0.2-15ml.Particularly: in the time of the filling adsorption liquid of the interior sealing of mother liquor container 3, the volume of mother liquor container chamber 31 is designed to 15ml so, and the volume of rifle head cavity 21 is designed to 1ml; In the time that mother liquor is rinsing liquid, the volume of mother liquor container chamber 31 and rifle head cavity 21 is designed to respectively 7ml and 1ml so; In the time that mother liquor is eluent, the volume of mother liquor container chamber 31 and rifle head cavity 21 is designed to respectively 0.2ml and 0.1ml so; In the time that mother liquor is lysate, the volume of mother liquor container chamber 31 and rifle head cavity 21 is designed to respectively 1.5ml and 0.2ml so.In addition,, in the time of the filling silica bead of the interior sealing of mother liquor container chamber 31 of mother liquor container 3, the volume of mother liquor container chamber 31 and rifle head cavity 21 is designed to respectively 0.2ml and 0.1ml so.

Although aforementioned mother liquor container chamber 31 changes volume size for filling different liquid, can meet according to the difference of test method the requirement of an application of sample 8-10 test tube, 8-10 test tube is moved to liquid.

When use, first rifle head 2 and rifle head interface 12 are connected, open air intake valve 331 and bleeder valve 321, press again and press hand 11, logical liquid valve 322 cuts out, and rifle head liquid valve 212 is opened, air in rifle head cavity 21 is discharged from rifle head fluid hole 22, unclamp and press hand 11, press hand 11 to top offset, the now interior generation negative pressure of rifle head cavity 21, liquid-resistant valve 322 is opened, mother liquor in mother liquor container chamber 31 is drawn adapter 32 from mother liquor and is entered in the rifle head cavity 21 of rifle head 2, press again and press hand 11, liquid-resistant valve 322 is closed, and rifle head liquid valve 212 is opened, mother liquor in rifle head cavity 21 moves into test tube, so repeatedly and until the test tube of all application of samples is completed and moves liquid.Complete after moving liquid just that this mother liquor container 3 is discardedly together with rifle head 2 until the mother liquor in a mother liquor container 3, change another mother liquor container 3 together with rifle head 2, to embody aforementioned mother liquor of different nature by operation process operation.

Preferably, in the time of the filling lysate of the interior sealing of mother liquor container 3, so the color of mother liquor container 3 (making the color of the material of mother liquor container 3) is selected with brown, to embody good light-shading effect.

Embodiment 2:

Refer to Fig. 3, mother liquor container 3 is directly formed in to the middle part of the short transverse of rifle head 2 around the circumferencial direction of rifle head 2, thereby the middle part that makes the short transverse of rifle head 2 is positioned at mother liquor container chamber 31, that is to say that the space between the outer wall of rifle head 2 and the inwall of mother liquor container 3 is configured to mother liquor container chamber 31, and the shape of mother liquor container 3 is the shape of circular cone stage body.All the other are all with the description to embodiment 1.

Embodiment 3:

Refer to Fig. 4, mother liquor container 3 is formed in the middle part of the short transverse of rifle head 2 with helical form around the circumferencial direction of rifle head 2, that is to say that mother liquor container 3 is directly incorporated into the middle part of the outer wall of rifle head 2 with spiral status, thereby make rifle head be positioned at the central authorities of mother liquor container 3.All the other are all with the description to embodiment 1.

Embodiment 4:

Refer to Fig. 5, mother liquor container 3 is with helical form and be formed in the top of the short transverse of rifle head 2 with vacant state, and from the present embodiment, whole mother liquor container 3 is designed to the shape of coil spring.All the other are all with the description to embodiment 1.

Although having exemplified mother liquor container 3 and rifle head 2, the utility model is configured to four kinds of forms of integrative-structure; but not repelling other similar combining form, is also any form of making according to the utility model enlightenment and immaterial variation all should be considered as protection category of the present utility model in other words.

Claims

1. the continuous liquid-transfering device that a kind of pipettor is used, described pipettor comprises a liquid-transfering gun (1), one end of this liquid-transfering gun (1) has the hand of pressing (11), and other end formation has a rifle head interface (12), described continuous liquid-transfering device comprises rifle head (2), this rifle head (2) connects with described rifle head interface (12) under use state, it is characterized in that: described rifle head (2) upper form have one to be filled with the mother liquor container (3) of mother liquor with sealing state, this mother liquor container (3) has one and draws adapter (32) for the mother liquor in its mother liquor container chamber (31) being introduced to the mother liquor of drawing for the rifle head fluid hole (22) of rifle head (2) in the rifle head cavity (21) of rifle head (2), this mother liquor is drawn adapter (32) and is connected with rifle head (2) one and communicates with described rifle head cavity (21).

2. the continuous liquid-transfering device that pipettor according to claim 1 is used, the inwall that it is characterized in that under described rifle head (2) use state towards one end of described liquid-transfering gun (1) and be positioned at described rifle head cavity (21) forms a filter pad step (211), on this filter pad step (211), be provided with a filter pad (2111), at the other end of rifle head (2) and be positioned at equally rifle head cavity (21) and be provided with a rifle head liquid valve (212).

3. the continuous liquid-transfering device that pipettor according to claim 1 is used, it is characterized in that described mother liquor container (3) has an air inlet (33), on air inlet (33), be equipped with an air intake valve (331), draw at described mother liquor on the pipeline of adapter (32) and be provided with a tapping valve (321) and a liquid-resistant valve (322), wherein: liquid-resistant valve (322) is positioned between tapping valve (321) and described rifle head (2).

4. the continuous liquid-transfering device of using according to the pipettor described in claim 1 or 3, is characterized in that described mother liquor container (3) is integrally formed structure corresponding to a side of the short transverse of described rifle head (2) and with rifle head (2).

5. the continuous liquid-transfering device of using according to the pipettor described in claim 1 or 3, it is characterized in that described mother liquor container (3) be formed in spiral status around the circumferencial direction of described rifle head (2) rifle head (2) short transverse middle part and the middle part of using the short transverse that makes rifle head (2) is positioned at described mother liquor container chamber (3).

6. the continuous liquid-transfering device of using according to the pipettor described in claim 1 or 3, is characterized in that described mother liquor container (3) is formed on the outer wall of rifle head (2) with coiled state around the short transverse of described rifle head (2).

7. the continuous liquid-transfering device of using according to the pipettor described in claim 1 or 3, is characterized in that described mother liquor container (3) with helical form and is formed in the top of the short transverse of described rifle head (2) with vacant state.

8. the continuous liquid-transfering device that pipettor according to claim 2 is used, is characterized in that described rifle head liquid valve (212) is check valve.

9. the continuous liquid-transfering device that pipettor according to claim 3 is used, is characterized in that described liquid-resistant valve (322) is check valve.

10. the continuous liquid-transfering device that pipettor according to claim 1 is used, is characterized in that the volume of the rifle head cavity (21) of described rifle head (2) is 0.1-1ml; The volume in the mother liquor chamber (31) of described mother liquor container (3) is 0.2-15ml.