CN217511894U - Special suction head for blood bank - Google Patents

Abstract

The application provides a special suction head for a blood bank, wherein an inner channel which penetrates through the upper end and the lower end of the suction head is arranged along the central line; the blood bank special suction head comprises a thick tube part, a suction head neck part and a thin tube part which are integrally formed; the thick pipe part is positioned at one end of the suction head neck, and the thin pipe part is positioned at the other end of the suction head neck; the cross section of the thin pipe part is smaller than that of the thick pipe part; the inner channels positioned in the thick pipe part and the thin pipe part are cylindrical, and the diameter of the inner channel positioned in the thin pipe part is smaller than that of the inner channel of the thick pipe part; in the application, the thin tube part is arranged at the lower end of the suction head, so that the tube wall structure is optimized, the space occupation is reduced, meanwhile, the diameter of an inner channel in the thin tube part is smaller, the size of a blood sample can be easily controlled, and the sample suction error can be reduced; in addition, the application is also suitable for blood samples with red blood cells, residual red blood cells in the suction head can be easily cleaned, and the next sample suction use is not influenced.

Description

Special suction head for blood bank

Technical Field

The utility model belongs to the technical field of the medical equipment technique and specifically relates to a special suction head of blood bank is related to.

Background

In a hospital blood bank, a blood bank analyzer sample pick-up head may be used to take a blood sample.

However, the existing sample sucking head has the following problems:

1. the existing sample suction head has a thick tube body, a high proportion of invalid chambers and easily caused sample suction amount errors due to air compression;

2. referring to fig. 6, in the conventional sample suction head, a tube body is large, and after being inserted into a test tube, the conventional sample suction head is immersed into a blood sample, occupies a large amount of space in the test tube, so that blood is easily squeezed out of the test tube, and a biological pollution event is caused;

3. the existing sample sucking head has larger inner diameter and slow liquid flow, and viscous red blood cells need to be sucked in a blood bank sample and are not easy to wash thoroughly;

4. referring to fig. 5 and 7, in the conventional sample aspirating head, the inner diameter close position is the lowest position (at the lower end), and a vortex is easily generated at the position, so that when a blood sample containing red blood cells is aspirated, the blood sample is contacted with sticky red blood cells, so that the red blood cells are easily washed unclean after the sample aspiration, and an error is easily generated in the next sample aspiration.

Therefore, there is a need to provide a solution to the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model provides a special suction head of blood bank, its purpose causes the excessive, the easy problem that causes sampling error and be difficult to wash the erythrocyte of blood sample in order to solve current sample suction head structure greatly easily.

The utility model adopts the technical scheme as follows: a blood bank special suction head is provided with an inner channel which runs through the upper end and the lower end along the central line; the blood bank special suction head comprises a thick tube part, a suction head neck part and a thin tube part which are integrally formed; the thick pipe part is positioned at one end of the suction head neck, and the thin pipe part is positioned at the other end of the suction head neck; the cross section of the thin pipe part is smaller than that of the thick pipe part;

the inner channels positioned in the thick pipe part and the thin pipe part are cylindrical, and the diameter of the inner channel positioned in the thin pipe part is smaller than that of the inner channel of the thick pipe part;

the inner channel in the suction head and neck part is in a frustum shape, so that the inner channel of the thick pipe part inclines to the inner channel in the thin pipe part for transition.

Further, the upper end of the thick pipe part is provided with a connecting part used for being connected with an instrument.

Further, the cross section of the connecting part is larger than that of the thick pipe part.

Further, the thin tube part is arranged to be a square rod-shaped structure.

Further, the thin pipe part is arranged to be a round rod-shaped structure.

Furthermore, the neck of the suction head is in a frustum shape.

Further, the thick pipe part is provided with a round rod-shaped structure.

The utility model has the advantages that:

in the application, the thin tube part is arranged at the lower end of the suction head, so that the tube wall structure is optimized, the space occupation is reduced, meanwhile, the diameter of an inner channel in the thin tube part is smaller, the size of a blood sample can be easily controlled, and the sample suction error can be reduced; in addition, the application is also suitable for blood samples with red blood cells, residual red blood cells in the suction head can be easily cleaned, and the next sample suction use cannot be influenced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a thin tube part according to an embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the test tube according to an embodiment of the present invention;

FIG. 4 is a schematic structural view of the blood sample sucking device according to an embodiment of the present invention;

FIG. 5 is a schematic view of a prior art sample sucking head according to the present invention;

FIG. 6 is a schematic view of a prior art sample suction head of the present invention being placed in a test tube;

fig. 7 is a schematic structural diagram of the sample suction head in the prior art of the present invention when sucking a blood sample.

Reference is made to the accompanying drawings in which: 200. a connecting portion; 201. a thick pipe portion; 202. a suction head neck; 203. a thin tube part; 204. an inner channel; 205. plasma; 206. packed red blood cells; 207. test tubes.

Detailed Description

The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.

The utility model provides a special suction head of blood bank, its purpose causes the excessive, the easy problem that causes sampling error and be difficult to wash the erythrocyte of blood sample in order to solve current sample suction head structure greatly easily.

Referring to fig. 1-4, in order to achieve the above object, the present invention provides a special suction head for blood bank, wherein the special suction head for blood bank is provided with an inner channel 204 along the central line, and the inner channel 204 penetrates the upper and lower ends; specifically, the blood bank special suction head comprises a thick pipe part 201, a suction head neck part 202 and a thin pipe part 203 which are integrally formed; the thick tube part 201 is positioned at one end of the suction head neck part 202, the thin tube part 203 is positioned at the other end of the suction head neck part 202, and the cross section of the thin tube part 203 is smaller than that of the thick tube part 201, so that the lower end structure of the blood bank special suction head is optimized, the space occupancy rate of the lower end is reduced, and the phenomenon that the volume of the test tube 207 is squeezed by the suction head structure too much to cause the overflow of a blood sample is prevented (see fig. 3 and 6); meanwhile, the inner channels 204 in the thick pipe part 201 and the thin pipe part 203 are cylindrical, the diameter of the inner channel 204 in the thin pipe part 203 is smaller than that of the inner channel 204 in the thick pipe part 201, the tip neck part 202 is in a frustum shape, and the inner channel 204 in the tip neck part 202 is also in a frustum shape, so that the inner channel 204 in the thick pipe part 201 is inclined to be transited to the inner channel 204 in the thin pipe part 203; the inner channel 204 of design in this application is narrow from top to bottom, and the internal diameter lower extreme attenuate can stably absorb the blood sample to can control the absorption volume of blood sample easily, reduce and inhale the appearance error, and reduce flow cross section with this, increase the velocity of flow, thereby make things convenient for washing of erythrocyte, still can not produce the vortex, can let the elution effect better.

In one embodiment, the upper end of the thick tube part 201 is provided with a connecting part 200, the section of the connecting part 200 is larger than that of the thick tube part 201, and the connecting part 200 is provided with a structure matched with an instrument, such as a thread, so as to be connected with a blood sample analyzer.

In one embodiment, the thick tube 201 is configured as a round rod structure corresponding to the inner channel 204, and the thin tube 203 is configured as a square rod structure, so that the outer diameter of the thin tube 203 is designed as a square, and the whole thin tube has a prism structure with four corners, thereby enhancing the rigidity and making it not easy to deform and bend; in another embodiment, the narrow tube portion 203 may be a round rod-shaped structure corresponding to the inner diameter.

In one embodiment, the cleaner head is generally funnel-shaped, made of clear plastic, and is not easily deformed. The total length of the suction head is 80mm, wherein the length of the connecting part is 200 mm and 5 mm; the thick pipe part 201 is cylindrical, has an outer diameter of 8mm, an inner diameter of 7mm and a length of 40mm, and can suck diluent and plasma 205 within less than 1500 ul; the sucker neck 202 is conical, the length is 5mm, and the inside of the sucker neck has 60ul volume; the narrow tube part 203 has a length of 30mm and an inner diameter of 1.6mm, but when the cross section of the narrow tube part 203 is square, it has a side length of 3mm and can hold < 60ul of plasma 205 or packed red blood cells 206. In routine use, a common dose of blood bank tip sampling is 25ul of packed red blood cells 206, so in this example the tip neck 202 has a capacity of 60ul and is therefore adequately contained, and furthermore the overall dose of blood sample is approximately 850ul of 3% red blood cell dilution plus 25ul of red blood cells for a total of 875ul, whereas in this example the tip has a total capacity of 1600ul and is therefore able to contain.

Compared with the prior art, the method has the following advantages that:

1. referring to fig. 3 and 6, the thin tube part 203 is disposed at the lower end of the suction head, so as to optimize the lower end structure of the suction head, reduce the space occupied by the suction head on the test tube 207, and thus the volume of the liquid level of the inserted blood sample is smaller, the volume occupied by the test tube 207 is smaller, and the blood sample does not overflow the test tube 207.

2. Referring to fig. 1, 2, 5, this application sets up tubule portion 203 at the suction head lower extreme, and this pipe portion structure is less, and the internal diameter is even, reduces the liquid flow cross section promptly to increase the velocity of flow, consequently can improve the elution effect, so after absorbing sticky packed red blood cell 206, can wash fast, guarantee to wash thoroughly clean after the blood collection.

3. Referring to fig. 4 and 7, in the prior art, the inner diameter of the sample suction head is at the lowest position, i.e. the neck 202 of the sample suction head is at the lowest position, where vortex is easily generated due to the change of the cross section. However, when a blood sample containing red blood cells is aspirated, the tip neck 202 is in contact with the viscous red blood cells, and the viscous red blood cells stick to the inner wall of the tip neck 202. In the present application, the narrow tube part 203 is disposed under the suction head to raise the closing position, i.e. the suction head neck 202 is disposed at the middle position of the suction head, so that the suction head neck 202 is not in contact with packed red blood cells 206 (see fig. 4), and therefore there is no problem of difficult cleaning, and the narrow tube part 203 is in contact with the red blood cells, wherein the inner channel 204 in the narrow tube part 203 has a circular and smooth inner diameter and a large flow rate, which facilitates the cleaning of the red blood cells and can improve the cleaning efficiency.

4. This application refers to blood bank analysis appearance and test tube 207's spatial structure, has improved the suction head structure, has improved the collection effect of blood bank sample, avoids the sample to pollute, and has improved the sampling precision.

As long as the idea created by the present invention is not violated, various embodiments of the present invention can be arbitrarily combined, and all should be regarded as the content disclosed by the present invention; the utility model discloses an in the technical conception scope, carry out multiple simple variant and different embodiments to technical scheme and go on not violating the utility model discloses the arbitrary combination of the thought of creation all should be within the protection scope.

Claims (7)

1. The utility model provides a special suction head of blood bank which characterized in that: the blood bank special suction head is provided with an inner channel which penetrates through the upper end and the lower end along the central line; the blood bank special suction head comprises a thick tube part, a suction head neck part and a thin tube part which are integrally formed; the thick pipe part is positioned at one end of the suction head neck part, and the thin pipe part is positioned at the other end of the suction head neck part; the cross section of the thin pipe part is smaller than that of the thick pipe part;

the inner channels in the thick pipe part and the thin pipe part are cylindrical, and the diameter of the inner channel in the thin pipe part is smaller than that of the inner channel in the thick pipe part;

the inner channel in the suction head neck part is in a frustum shape, so that the inner channel of the thick pipe part inclines to the inner channel in the thin pipe part for transition.

2. The blood bank dedicated pipette tip according to claim 1, wherein: the upper end of thick pipe portion is provided with the connecting portion that is used for being connected with the instrument.

3. The blood bank dedicated pipette tip according to claim 2, wherein: the section of the connecting part is larger than the cross section of the thick pipe part.

4. The blood bank dedicated pipette tip according to claim 1, wherein: the thin pipe part is of a square rod-shaped structure.

5. The blood bank dedicated pipette tip according to claim 1, wherein: the thin pipe part is of a round rod-shaped structure.

6. The special blood bank suction head according to claim 1, characterized in that: the neck of the suction head is in a frustum shape.

7. The blood bank dedicated pipette tip according to claim 1, wherein: the thick pipe part is of a round rod-shaped structure.

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