CN218359321U

CN218359321U - Eccentric water sucking and dripping head

Info

Publication number: CN218359321U
Application number: CN202222394372.XU
Authority: CN
Inventors: 张红梅
Original assignee: Demode Suzhou Machinery Technology Co ltd
Current assignee: Demode Suzhou Machinery Technology Co ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-01-24
Anticipated expiration: 2032-09-09

Abstract

The utility model relates to an eccentric drip suction head, which comprises a pipette, wherein the pipette comprises a fixed cylinder, a capillary pipette arranged on the fixed cylinder and a drip tube arranged on the fixed cylinder, and a guiding through hole is arranged at the position of the fixed cylinder corresponding to the drip tube; the lead-out through hole and the capillary suction pipe are arranged in a staggered manner; the liquid to be detected or the blood to be detected can be adsorbed by utilizing the capillary suction pipe arranged on the liquid suction pipe through the capillary phenomenon, then the liquid suction pipe is arranged in the reagent cup in a matching way, the liquid in the capillary suction pipe at the bottom is diluted or reacted in the reagent cup, and the liquid in the reagent cup is led out from the leading-out through hole and the dropper; usually, in order to ensure the cleanliness of the liquid in the reagent cup, a plastic film is usually sealed on the reagent cup, when the plastic film is punctured by the capillary suction tube, the liquid in the plastic film is reversely sprayed out under the action of air pressure, and the liquid in the capillary suction tube can be prevented from being reversely sprayed out into the guide through hole after the liquid in the capillary suction tube is acted by air pressure in a staggered manner by the guide through hole and the capillary suction tube.

Description

Eccentric water sucking and dripping head

Technical Field

The utility model relates to a detection device, in particular to eccentric water dropper that inhales.

Background

With the popularization of semi-automatic analyzers in the field of medical biochemical inspection, micro quantitative sampling becomes a key point for the accuracy of inspection results. Due to the micro-scale detection of the sample, the detection is completed by means of a micro-sampling and dropping device.

The pipette tip is a widely used quantitative pipette, and comprises a pipette tube, a cap, a reagent cup and three detachable quantitative pipette dropping devices; when the liquid guiding device is used, liquid can be sucked in by a capillary tube arranged at the bottom of the pipette tube, the sucked liquid is uniformly mixed with a solvent in the reagent cup, and then the liquid in the pipette tube can be guided out from the top of the pipette tube, for example, the liquid can be guided out to a glass slide for careful observation.

In the prior art, when a capillary tube at the bottom of a pipette sucks liquid and then enters a reagent cup, the liquid in the capillary tube is sprayed upwards to be thin under the action of air pressure and is sprayed out from the top, so that the liquid volume is reduced, and errors of samples or data can be caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an eccentric water dropper that inhales.

The above technical purpose of the present invention can be achieved by the following technical solutions: an eccentric pipette head comprises a pipette, wherein the pipette comprises a fixed cylinder, a capillary pipette arranged on the fixed cylinder and a dropper arranged on the fixed cylinder, and a lead-out through hole is formed in the position, corresponding to the dropper, of the fixed cylinder; the lead-out through holes and the capillary suction tubes are arranged in a staggered mode.

By adopting the technical scheme, the liquid to be detected or the blood to be detected can be adsorbed by utilizing the capillary phenomenon by utilizing the capillary suction pipe arranged on the liquid suction pipe, then the liquid suction pipe is arranged in the reagent cup in a matching way, the liquid in the capillary suction pipe at the bottom is diluted or reacted in the reagent cup, and then the liquid in the reagent cup is led out from the leading-out through hole and the dropper, such as the liquid is led out to a glass slide for observation and the like; usually, in order to ensure the cleanliness of the liquid in the reagent cup, a plastic film is often sealed on the reagent cup, when the plastic film is punctured by the capillary suction tube, the liquid in the reagent cup can be reversely sprayed under the action of air pressure, and the liquid in the capillary suction tube can be prevented from being reversely sprayed into the lead-out through hole after the liquid in the capillary suction tube is acted by the air pressure in a staggered manner with the lead-out through hole.

Preferably, the side wall of the fixed cylinder is provided with two groups of annular grooves.

Preferably, a fixing member extends from the fixing cylinder, and the capillary suction tube is connected to the fixing member.

Preferably, the fixed cylinder side wall is extended and provided with an abutting disc.

Preferably, the inner part of the dropper is hollow to form a flow cavity, the end part of the dropper, which is far away from the fixed cylinder, is sunken to form a spherical groove, and the flow cavity is arranged in the center of the spherical groove.

By adopting the technical scheme, when the liquid flows out along the dropper, the liquid can flow to the spherical groove on the end surface and then better flows out along the side wall of the spherical groove; and the residual liquid can return to the reagent cup again along the surface wall of the spherical groove, so that the sample loss is avoided, and meanwhile, the danger caused by the fact that the sample flows along the outer wall of the dropper in the prior art is also avoided.

Preferably, the capillary suction pipe is arranged at the axial center of the fixed cylinder.

Preferably, the position of the fixed cylinder, which avoids the dropper, is concavely provided with a clamping groove.

To sum up, the utility model discloses following beneficial effect has:

1. the liquid to be detected or the blood to be detected can be adsorbed by utilizing the capillary suction pipe arranged on the liquid suction pipe through the capillary phenomenon, then the liquid suction pipe is arranged in the reagent cup in a matching way, the liquid in the capillary suction pipe at the bottom is diluted or reacted in the reagent cup, and then the liquid in the reagent cup is led out from the leading-out through hole and the dropper, for example, the liquid is led out to a glass slide for observation and the like; generally, in order to ensure the cleanliness of liquid in a reagent cup, a plastic film is often sealed on the reagent cup, when the plastic film is punctured by the capillary suction tube, the liquid in the reagent cup can be reversely sprayed under the action of air pressure, and the liquid in the capillary suction tube can be prevented from being reversely sprayed into the lead-out through hole after being acted by the air pressure in a mode that the lead-out through hole and the capillary suction tube are arranged in a staggered mode;

2. the end part of the dropper, which is far away from the fixed cylinder, is sunken to form a spherical groove, and the flow cavity is arranged in the center of the spherical groove; when the liquid flows out along the dropper, the liquid can flow to the spherical groove on the end surface and then better flows out along the side wall of the spherical groove; and the residual liquid can return to the reagent cup again along the surface wall of the spherical groove, so that the sample loss is avoided, and meanwhile, the danger caused by the fact that the sample flows along the outer wall of the dropper in the prior art is also avoided.

Drawings

FIG. 1 is an isometric view of the overall structure of the embodiment;

FIG. 2 is a schematic view of the overall structure in the embodiment;

fig. 3 is a sectional view of the entire structure in the embodiment.

In the figure, 1, pipette; 11. a fixed cylinder; 111. a fixing member; 112. a butting tray; 12. a capillary pipette; 13. a dropper; 131. a flow chamber; 132. a spherical groove; 14. leading out the through hole; 15. an annular groove; 16. a clamping groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Example (b):

an eccentric pipette head, as shown in fig. 1, comprises a pipette 1, wherein the pipette 1 comprises a fixed cylinder 11, a capillary pipette 12 arranged on the fixed cylinder 11, and a dropper 13 arranged on the fixed cylinder 11, and a guiding through hole 14 is arranged at a position of the fixed cylinder 11 corresponding to the dropper 13; the lead-out through hole 14 is arranged in a staggered way with the capillary suction pipe 12.

As shown in fig. 1 and 3, the side wall of the fixed cylinder 11 is provided with two sets of annular grooves 15, and the annular grooves 15 are provided in two sets.

As shown in fig. 1, a fixing member 111 is extended from the fixing cylinder 11, and the capillary suction tube 12 is connected to the fixing member 111.

As shown in fig. 1 and 2, the side wall of the fixed cylinder 11 is extended with an abutting disk 112.

As shown in fig. 2 and 3, a flow cavity 131 is formed in the interior of the dropper 13, the end of the dropper 13 facing away from the fixed cylinder 11 is recessed to form a spherical groove 132, and the flow cavity 131 is arranged in the center of the spherical groove 132; the spherical recess 132 has a hemispherical shape.

As shown in fig. 1 and 3, the capillary pipette 12 is disposed at the axial center of the fixed cylinder 11, and the axial center of the capillary pipette 12 overlaps with the axial center of the fixed cylinder 11.

As shown in fig. 2 and 3, the fixed cylinder 11 is recessed with a catching groove 16 at a position avoiding the dropper 13.

The working principle is as follows:

the liquid to be detected or the blood to be detected can be adsorbed by utilizing the capillary suction pipe arranged on the liquid suction pipe through the capillary phenomenon, then the liquid suction pipe is arranged in the reagent cup in a matching way, the liquid in the capillary suction pipe at the bottom is diluted or reacted in the reagent cup, and then the liquid in the reagent cup is led out from the leading-out through hole and the dropper, for example, the liquid is led out to a glass slide for observation and the like; usually, in order to ensure the cleanliness of the liquid in the reagent cup, a plastic film is often sealed on the reagent cup, when the plastic film is punctured by the capillary suction tube, the liquid in the reagent cup can be reversely sprayed under the action of air pressure, and the liquid in the capillary suction tube can be prevented from being reversely sprayed into the lead-out through hole after the liquid in the capillary suction tube is acted by the air pressure in a staggered manner with the lead-out through hole.

Claims

1. An eccentric pipette tip, comprising a pipette (1), characterized in that: the pipette (1) comprises a fixed cylinder (11), a capillary pipette (12) arranged on the fixed cylinder (11) and a dropper (13) arranged on the fixed cylinder (11), wherein a lead-out through hole (14) is formed in the position, corresponding to the dropper (13), of the fixed cylinder (11); the lead-out through hole (14) and the capillary suction tube (12) are arranged in a staggered mode.

2. An eccentric dripper according to claim 1, wherein: the side wall of the fixed cylinder (11) is provided with annular grooves (15), and the annular grooves (15) are provided with two groups.

3. The eccentric drip suction head according to claim 2, wherein: the fixing part (111) is arranged on the fixing cylinder (11) in an extending mode, and the capillary suction pipe (12) is connected to the fixing part (111).

4. An eccentric dripper according to claim 3, wherein: the side wall of the fixed cylinder (11) is provided with an abutting disc (112) in an extending mode.

5. An eccentric dripper according to claim 4, wherein: the inner part of the dropper (13) is hollow to form a flow cavity (131), the end part of the dropper (13) departing from the fixed cylinder (11) is sunken to form a spherical groove (132), and the flow cavity (131) is arranged in the center of the spherical groove (132).

6. An eccentric dripper according to claim 5, wherein: the capillary suction pipe (12) is arranged at the axis of the fixed cylinder (11).

7. An eccentric dripper according to claim 6, wherein: the position of the fixed cylinder (11) avoiding the dropper (13) is concavely provided with a clamping groove (16).