CN214678887U

CN214678887U - Neonate's trace heparin tube

Info

Publication number: CN214678887U
Application number: CN202023024291.8U
Authority: CN
Inventors: 苗静琨; 尹一帆
Original assignee: CHONGQING HEALTH CENTER FOR WOMEN AND CHILDREN
Current assignee: CHONGQING HEALTH CENTER FOR WOMEN AND CHILDREN
Priority date: 2020-12-14
Filing date: 2020-12-14
Publication date: 2021-11-12
Anticipated expiration: 2030-12-14

Abstract

The utility model belongs to the technical field of medical equipment, in particular to a newborn micro blood collection tube, which comprises a tube body, a blood collection tube cover, a protective cover and a capillary suction tube, wherein the bottom of the tube body is provided with a reagent blood collection tube cover used for stabilizing the separation state after centrifugation of serum and blood cells, the reagent blood collection tube cover is detachably and hermetically connected with the top of the tube body, the blood collection tube cover is provided with a central hole and an exhaust hole, and the capillary suction tube passes through the central hole on the blood collection tube cover and is inserted into the tube body; the protective cover covers the blood sampling tube cover and is used for sealing the blood sampling tube. The blood collection tube is designed for neonates, the using method is simple and easy to operate, the sealing effect is good, blood leakage and pollution can be effectively avoided, the blood can be directly placed into a small high-speed centrifugal machine to be centrifugally separated into serum and blood cells, meanwhile, the reagent at the bottom of the tube body can stabilize the separation state of the serum and the blood cells, fibrinolytic protein and hemolysis are avoided, and the blood sample can be conveniently and remotely transported.

Description

Neonate's trace heparin tube

Technical Field

The utility model relates to the technical field of medical equipment, especially relate to a neonate's trace heparin tube.

Background

Among body fluid specimens used in clinical tests, blood is the most commonly used one, and blood collection tubes are necessary devices for blood collection. The body of a newborn is young, and the newborn is generally clinically sampled by a capillary tube for collecting peripheral blood. However, the newborn blood collection tube commonly used in clinic at present has a disposable micro blood collection tube and an integrated micro blood collection tube, and the disposable micro blood collection tube and the integrated micro blood collection tube have the following problems: firstly, the specification of a glass capillary pipette in a disposable micro blood collection tube is 20-100 mu L, and the capillary pipette needs to be replaced for a project with a collection amount more than 100 mu L; if the midway bleeding point is replaced and the blood is coagulated, blood needs to be collected again, the skin of the newborn is delicate, secondary damage is easily caused to the skin of the newborn after blood collection again, and the infection risk is increased. Second, although the demand of continuous collection tip blood can be satisfied to the integral type micro blood collection pipe, its back is pulled out at the capillary straw, and the tube cap can't be sealed completely, can lead to blood sample to leak in long-distance transport, and external environment also can cause unnecessary pollution to the sample simultaneously. Thirdly, after using above-mentioned heparin tube to gather peripheral blood, use Ethylene Diamine Tetraacetic Acid (EDTA) as the anticoagulant more, unable stable centrifugation back serum and the separation state of blood cell are unfavorable for the long-distance transportation, and serum separation inefficiency, easily receive fibrin and hemolytic influence, are unfavorable for obtaining high-quality serum, and then influence the detection of experimental program. Fourthly, the two kinds of neonate blood collection tubes have small tube body size, are smaller than the outer diameter of a conventional 1.5ml EP tube, can shake when being directly placed into a small-sized high-speed centrifuge, need to be wrapped by plastic films, toilet paper and other materials and then placed into the centrifuge for centrifugation, are troublesome to operate, and easily cause the leakage of samples.

SUMMERY OF THE UTILITY MODEL

In view of the above prior art's shortcoming, the utility model aims to provide a neonate's micro blood collection tube for solve among the prior art neonate blood collection tube can not gather tip blood in succession, can't seal up completely, can lead to blood sample to leak or pollute, inconvenient remote transportation, size are on the small side, can not directly put into small-size high-speed centrifuge and carry out centrifugation scheduling problem.

To achieve the above and other related objects, the basic solution of the present invention is: a newborn micro blood collection tube comprises a tube body, a blood collection tube cover, a protective cover and a capillary suction tube, wherein the tube body is a cylindrical transparent plastic tube with an opening at the top end and a round bottom at the bottom, and a reagent for stabilizing the separation state of serum and blood cells after centrifugation is placed at the bottom of the tube body; the blood collection tube cover is detachably and hermetically connected with the top of the tube body, a central hole and an exhaust hole are formed in the blood collection tube cover, the lower end of the capillary suction tube penetrates through the central hole in the blood collection tube cover and is inserted into the tube body, and the upper end of the capillary suction tube extends out of the central hole and is exposed outside; the protective cover can cover the blood sampling tube cover and is used for sealing the blood sampling tube.

Furthermore, the top of the blood sampling tube cover is provided with an annular protective cover plug, and the protective cover can cover the protective cover plug.

Further, the outer wall of the protection cover plug is connected with a protection cover connecting band, and the protection cover is connected with the protection cover plug through the protection cover connecting band.

Further, the blood sampling tube cover comprises a protective cover plug, a cover cap and an annular cover body, the central hole and the exhaust hole are formed in the cover cap, and a flange is arranged on the periphery of the annular cover body.

Further, the outer wall of the lower end of the annular cover body is provided with external threads, the inner wall of the top end of the tube body is provided with internal threads matched with the external threads, and the blood sampling tube cover is in threaded connection with the tube body.

Further, the blood collection tube is integrally formed.

Further, the outer diameter of the tube body is the same as the outer diameter of a 1.5mL EP tube.

Further, the height of the blood collection tube is lower than the length of the capillary suction tube.

Further, the reagent is a mixture of a coagulant and a separating gel.

Furthermore, the capillary suction pipe is in clearance fit with the central hole of the blood sampling pipe cover.

Furthermore, the middle-lower part of the blood collection tube body is marked with scales.

Further, the scale was 100 μ L and 200 μ L.

As mentioned above, the utility model discloses a neonate's micro blood collection tube's application method and beneficial effect lie in:

the utility model provides a neonate's trace heparin tube, contain body, blood sampling tube lid, visor and capillary pipette, during the blood sampling, gather trace blood through the capillary effect of capillary pipette; the tube body adopts the same outer diameter as that of a conventional 1.5ml EP tube, adopts a round bottom design, is convenient to store, and can be directly placed into a small-sized high-speed centrifuge for centrifugation; after blood sampling, the blood sample can be centrifuged to avoid red blood cell lysis in the transportation process, ensure the quality of serum and avoid influencing the detection of experimental items; the bottom of the tube body is provided with a reagent which can stabilize the separation state of the centrifuged blood serum and blood cells, in particular to a mixture of a coagulant and a separation gel, the centrifuged blood is separated into the blood serum and the blood cells, and the coagulant and the separation gel form a colloidal isolation layer between the blood serum and the blood cells, so that the blood cells cannot be damaged and the blood serum cannot be polluted; the blood collection tube is provided with a blood collection tube cover and a protective cover, the blood collection tube cover is provided with an exhaust hole, a blood collection cavity in the tube body keeps flowing with outside air through the exhaust hole, the internal pressure of the blood collection cavity is higher than the outside after the blood is prevented from flowing into the blood collection cavity, the blood in the capillary suction tube cannot continuously flow into the blood collection cavity, and the protective cover can seal the blood collection tube after the capillary suction tube is pulled out, so that the sample is prevented from leaking or being polluted, and the long-distance transportation is facilitated; in addition, the lower-middle part of this heparin tube body marks the scale, specifically is 100 mu L and 200 mu L's scale, can gather corresponding blood volume according to the detection project needs, avoids the volume of taking a blood sample not enough.

The utility model discloses a trace heparin tube is directed against the neonate design very much, and application method is simple easily to be operated, requires lowly to operating personnel ability, can effectively avoid the leakage and the pollution of blood, is fit for using under the condition that needs remote transportation trace blood sample.

Of course, the utility model discloses a trace heparin tube is not restricted to the neonate and uses, and other circumstances that need gather trace blood also can use.

Drawings

Fig. 1 is a front view of a newborn micro blood collection tube (protective cover is opened) when the newborn micro blood collection tube is not used according to an embodiment of the present invention.

Fig. 2 is a top view of an embodiment of the present invention, showing a newborn baby micro blood collection tube.

Fig. 3 is a front view of the embodiment of the present invention after the newborn baby micro blood collection tube collects blood and centrifuges the blood (the protective cover is in a covering state).

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated. The structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention does not have the substantial significance in the technology, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy which can be produced by the present invention and the purpose which can be achieved by the present invention. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.

Description of reference numerals:

the blood sampling tube comprises a protective cover 1, a protective cover connecting band 2, a protective cover plug 3, a blood sampling tube cover 4, a central hole 5, an exhaust hole 6, a capillary suction tube 7, a tube body 8, a 200 mu L scale 9, a 100 mu L scale 10, a reagent 11, serum 12 and blood cells 13.

As shown in fig. 1, 2 and 3, the newborn micro blood collection tube of the present embodiment includes a tube body 8, a blood collection tube cap 4, a protection cap 1 and a capillary pipette 7, wherein the tube body 8 is a cylindrical transparent plastic tube with an open top end and a round bottom, and a reagent 11 capable of stabilizing the separation state of serum 12 and blood cells 13 after centrifugation is placed at the bottom of the tube body 8; the blood sampling tube cover 4 is detachably and hermetically connected with the top of the tube body 8, a central hole 5 and an exhaust hole 6 are arranged on the blood sampling tube cover 4, the lower end of a capillary suction tube 7 penetrates through the central hole 5 on the blood sampling tube cover 4 and is inserted into the tube body 8, and the upper end of the capillary suction tube 7 extends out of the central hole 5 and is exposed outside; the protective cover 1 can cover the blood collection tube cover 4 and is used for sealing the blood collection tube.

Specifically, the top of the blood sampling tube cover 4 is provided with an annular protective cover plug 3, and the protective cover 1 covers the protective cover plug 3.

Further, the outer wall of the protective cover plug 3 is connected with a protective cover connecting band 2, and the protective cover 1 is connected with the protective cover plug 3 through the protective cover connecting band 2.

Specifically, the blood collection tube cover 4 in the embodiment includes a protection cover plug 3, a cover cap and an annular cover body, the protection cover plug 3 is annular, and the protection cover 1 covers the protection cover plug 3 and is in sealing fit with the protection cover plug 3; the central hole 5 and the vent hole 6 are arranged on the cap, and the capillary suction tube 7 is in clearance fit with the central hole 5 of the blood sampling tube cap 4, so that the capillary suction tube 7 can be smoothly inserted and pulled out; the periphery of the annular cover body is provided with a flange, and when the blood collection tube cover 4 covers the tube body 8, the flange can prevent the blood collection tube cover 4 from sinking into the tube body 8; the lower extreme outer wall of annular lid is equipped with the external screw thread, and the top inner wall of body 8 is equipped with the internal thread with external screw thread matched with, and blood sampling tube cap 4 is threaded connection with body 8.

The blood collection tube of the present embodiment is preferably integrally formed, that is, the protective cap plug 3, the cap, the annular cap body, and the flange are integrally formed.

In this embodiment, the outer diameter of the tube body 8 is the same as that of the 1.5mL EP tube, and it is convenient to directly put the tube body into a small-sized high-speed centrifuge for centrifugation.

In this embodiment, the height of the blood collection tube is lower than the length of the capillary tube 7, and the height of the blood collection tube is between 4cm and 4.5 cm.

In this embodiment, the reagent 11 at the bottom of the tube 8 is a mixture of a coagulant and a separation gel, and the mixture is a solid, so that the separation state of the blood serum and the blood cells after centrifugation can be stabilized, and the blood cells are not damaged and the blood serum is not polluted.

In this embodiment, the lower-middle part of heparin tube body 8 is marked scale, specifically is 200 mu L scale 9 and 100 mu L scale 10, can gather corresponding blood volume according to the detection project needs, avoids the volume of taking a blood sample not enough.

The method of using the newborn micro blood collection tube of the present example is as follows:

as shown in fig. 1, when not used, the protective cover of the blood sampling tube is in an open state; when blood is collected, micro blood is collected through the capillary effect of the capillary suction tube 7; the blood sampling tube cover 4 is provided with an exhaust hole 6, the blood sampling cavity in the tube body 8 keeps flowing with the outside air through the exhaust hole 6, and the internal pressure of the blood sampling cavity is higher than the outside after the blood flows into the blood sampling cavity.

After blood collection is finished, the capillary pipette 7 is pulled out, the protective cover 1 is covered on the protective cover plug 3 (as shown in fig. 3), the blood collection tube is sealed, and blood samples are prevented from leaking or being polluted by the external environment and bacteria.

The mixture of coagulant and separating gel is placed at the bottom of the tube body 8, after blood collection, the blood collection tube can be directly placed into a small high-speed centrifuge to centrifugally separate blood into serum 12 and blood cells 13 (as shown in fig. 3), and the separation state of the centrifuged serum and blood cells is stabilized through the separating gel and the coagulant, so that the quality of the serum is ensured, and the detection of an experimental project is prevented from being influenced.

The utility model discloses a trace heparin tube is directed against the neonate design very much, the simple easy operation of application method, it is low to the operating personnel ability requirement, and sealed effectual, can effectively avoid the leakage and the pollution of blood, can also directly put into small-size high speed centrifuge with blood centrifugation for serum and blood cell, and through the separation gel and the separation state of coagulant stable centrifugation back serum and blood cell, guarantee the quality of serum, avoid the influence to the experimental project detection, be particularly suitable for using under the condition that needs remote transport trace blood sample.

The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. A newborn micro blood collection tube is characterized by comprising a tube body, a blood collection tube cover, a protective cover and a capillary suction tube, wherein the tube body is a cylindrical transparent plastic tube with an opening at the top end and a round bottom at the bottom, and a reagent for stabilizing the separation state of serum and blood cells after centrifugation is placed at the bottom of the tube body; the blood collection tube cover is detachably and hermetically connected with the top of the tube body, a central hole and an exhaust hole are formed in the blood collection tube cover, the lower end of the capillary suction tube penetrates through the central hole in the blood collection tube cover and is inserted into the tube body, and the upper end of the capillary suction tube extends out of the central hole and is exposed outside; the protective cover can cover the blood sampling tube cover and is used for sealing the blood sampling tube.

2. The neonatal micro blood collection tube of claim 1, wherein: the top of the blood sampling tube cover is provided with an annular protective cover plug, and the protective cover can cover the protective cover plug.

3. The neonatal micro blood collection tube of claim 2, wherein: the outer wall of the protection cover plug is connected with a protection cover connecting band, and the protection cover is connected with the protection cover plug through the protection cover connecting band.

4. The neonatal micro blood collection tube of claim 2, wherein: the blood sampling tube cover comprises a protective cover plug, a cover cap and an annular cover body, the central hole and the exhaust hole are formed in the cover cap, and a flange is arranged on the periphery of the annular cover body.

5. The neonatal micro blood collection tube of claim 4, wherein: the outer wall of the lower end of the annular cover body is provided with external threads, the inner wall of the top end of the tube body is provided with internal threads matched with the external threads, and the blood sampling tube cover is in threaded connection with the tube body.

6. The neonatal micro blood collection tube of claim 1, wherein: the outer diameter of the tube body is the same as the outer diameter of a 1.5mL EP tube.

7. The neonatal micro blood collection tube of claim 1, wherein: the capillary suction pipe is in clearance fit with the central hole of the blood sampling pipe cover.

8. The neonatal micro blood collection tube of claim 1, wherein: the middle-lower part of the blood collection tube body is marked with scales.

9. The neonatal micro blood collection tube of claim 8, wherein: the scale was 100 μ L and 200 μ L.