CN213787417U - A fingertip hemostix for glycated haemoglobin analysis appearance autoinjection - Google Patents

Abstract

The utility model discloses a fingertip hemostix for glycated haemoglobin analysis appearance autoinjection, including the body with set up in the inside rubber seal diaphragm of body, set up in the rubber seal lid on body top, rubber seal diaphragm below be the hemolysis district rubber seal covers the marginal area and is provided with the pinhole, inside blood taking needle embedding pinhole, the blood taking needle includes needle point and needle tail, and the needle point is for cutting the plane, and the needle point below is provided with spacing platform, and spacing platform below joint has the spacing ring. The utility model discloses simple structure, preparation material cost is lower, conveniently uses as disposable medical supplies, and the acquisition cost of no matter patient or hospital is all lower, reduces economic burden, reasonable resources are saved. The utility model discloses convenient to use absorbs blood through the negative pressure is automatic and gets into the body inside and the hemolytic agent mixes, is provided with hydrophobic coating on the body inner wall, can avoid blood to drip on the pipe wall the unable problem of mixing with hemolytic agent of wall built-up.

Description

A fingertip hemostix for glycated haemoglobin analysis appearance autoinjection

Technical Field

The utility model relates to the field of medical equipment, concretely relates to a fingertip hemostix for glycated haemoglobin analysis appearance autoinjection.

Background

The glycosylated hemoglobin HbA1c measured by the glycosylated hemoglobin analyzer can reflect the average blood glucose level of a patient for about three or four months, the detection result is not influenced by whether the patient eats or drinks water before detection, and the glycosylated hemoglobin HbA c is a 'gold index' for diagnosing diabetes and evaluating the blood glucose control level and is widely applied to clinic. At present, a glycosylated hemoglobin analyzer generally adopts a conventional vacuum blood collection tube for sample injection, the blood collection quantity is large, and about 5mL of blood needs to be collected generally. But in practice, only 20-50 μ L of blood is sucked away during automatic sample injection of the instrument, so that excessive blood sampling is caused, and a large amount of biochemical pollution waste is left after the measurement is finished. Since HbA1c is a relative amount rather than a total amount, i.e., the ratio of glycated hemoglobin to the total amount of glycated and non-glycated hemoglobin, the measurement results are consistent between whole blood samples and those after appropriate dilution, and fingertip blood mixed with a large amount of other body fluids due to squeezing can be used for HbA1c measurement, and the amount of two drops of blood taken is sufficient for the test. Although the collection of the fingertip blood is more convenient than the collection of the venous blood and the blood collection amount is less, the blood collector which can adapt to automatic sample introduction and is used for HbA1c analysis on the fingertip blood at the present stage is less, a doctor only can manually operate and process the fingertip blood sample, the operation is more complicated, the working efficiency is low, and the vacuum blood collection tube which is convenient for automatic sample introduction of an instrument is adopted in actual work to collect the venous blood to prepare the HbA1c instead of collecting the fingertip blood.

In the prior art: patent with the publication number of CN 210447020U discloses a fingertip blood collector for automatic sample introduction of a glycosylated hemoglobin analyzer, which uses a stainless steel blood collection drainage needle to collect fingertip blood, uses a 3D printed tube body to collect blood, firstly inserts the blood collection drainage needle into a sealing cover blood collection passage, enables the blood collection drainage needle to be stably embedded into the blood collection passage and supported, punctures the fingertip with the blood collection drainage needle, extrudes a blood drop, and makes the opening of the blood collection drainage needle upwards contact with the blood drop, so that the blood drop is automatically sucked into the blood collection drainage needle under the capillary action of the blood collection drainage needle and the gravity action of the blood to enter a blood chamber. Blood is filled in the blood sampling drainage needle, and then naturally enters the blood chamber under the action of gravity. When blood is collected, the blood chamber is divided into 3 paths and communicated with the atmosphere, so that the air pressure balance can be kept, and the blood can smoothly enter the blood chamber under the action of gravity. After blood collection is completed, the sealing cover is screwed to the sealing position of the vent hole covered by the sealing gasket, the vent hole is communicated with the snakelike bent air guide capillary, the air guide capillary is communicated with the atmosphere, so that blood enters the tube body under the capillary action and then is discharged out of the tube body, the bulges in the sealing cover cap are clamped into the pits in the outer wall of the blood collector again for fixation, the blood collector is swung by force for a plurality of times, and the blood enters the blood dissolving chamber through the capillary and is mixed with a pre-loaded hemolytic agent to be tested. Above-mentioned patent structure is complicated, blood sampling complex operation, the design of utilizing gravity drainage blood is unstable, and at last still need to throw blood sampling device and just can make blood get into from capillary and dissolve the blood room, the capillary pipe diameter is minimum, even can also appear blood outflow incomplete problem under the exogenic action often after not having the capillary, and the hemostix is disposable medical supplies, use up promptly still, the structural design of the complicacy of above-mentioned patent and the use of high cost material make disposable hemostix with too high costs, cause the wasting of resources, patient's economic burden has been increased, be not conform to the 3R principle that environmental protection health required. Therefore, it is necessary to design a fingertip blood collector with simple structure and easy operation for automatic sample introduction of glycated hemoglobin analyzer

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, designed a fingertip hemostix for glycated haemoglobin assay appearance autoinjection, can obtain better use when reduce cost reduces patient's economic burden and experience.

In order to solve the above technical problem and achieve the above technical effect, the utility model discloses a following technical content realizes:

the utility model provides a fingertip hemostix for glycated haemoglobin analysis appearance autoinjection, includes the body and sets up in the body inside with the sealed diaphragm of body inner wall bonding rubber, set up in the sealed rubber lid on body top, the sealed diaphragm below of rubber be the hemolysis district the sealed upper fringe region of rubber is provided with the pinhole, the pinhole inner wall is the arc protrudingly, inside the blood taking needle embedding pinhole to can remove along the pinhole under the condition of atress, the blood taking needle includes needle point and needle tail, the needle point is oblique cutting plane, and the needle point below is provided with spacing platform, spacing platform below block has the spacing ring, the blood taking needle part of spacing ring and top all is higher than the sealed plane of rubber lid, the needle tail is oblique cutting plane, and the needle tail is apart from the sealed diaphragm of rubber 2-3 mm.

Further, the inner wall of the pipe body is provided with a hydrophobic coating.

Further, the length of the exposed part of the needle tip is 2 mm.

Furthermore, a hemolytic agent is required to be added into the tube body before the blood collector is used.

Further, the blood collector may be provided with a protective cover.

The utility model has the advantages that:

(1) the utility model discloses simple structure, preparation material cost is lower, conveniently uses as disposable medical supplies, and the acquisition cost of no matter patient or hospital is all lower, reduces economic burden, reasonable resources are saved.

(2) The utility model discloses convenient to use absorbs blood through the negative pressure is automatic and gets into the body inside and the hemolytic agent mixes, is provided with hydrophobic coating on the body inner wall, can avoid blood to drip on the pipe wall the unable problem of mixing with hemolytic agent of wall built-up.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic diagram of the overall structure of an automatic sample introduction fingertip blood collector;

FIG. 2 is a schematic cross-sectional view of a fingertip blood collector with automatic sample injection;

FIG. 3 is a schematic view of the structure of part A of the automatic sample introduction fingertip blood collector;

FIG. 4 is a schematic view of a blood collection needle structure of the automatic sample introduction fingertip blood collection device.

In the drawings, the components represented by the respective reference numerals are listed below:

1-tube body, 11-hemolysis area, 2-blood taking needle, 21-needle tip, 22-limit table, 23-limit ring, 24-needle tail, 3-rubber sealing cover, 31-needle hole and 4-rubber sealing diaphragm.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

Example 1

Referring to fig. 1-3, a fingertip blood collector for automatic sample injection of a glycated hemoglobin analyzer comprises a tube body 1, a blood collection needle 2, a rubber sealing cover 3 arranged at the top end of the tube body, and a rubber sealing diaphragm 4 arranged inside the tube body 1 and bonded with the inner wall of the tube body 1, wherein the sealing rubber diaphragm 4 can seal a hemolysis zone 11 below the tube body, before blood collection, a syringe is needed to add a hemolytic agent into the hemolysis zone 11, after the hemolytic agent is added, the syringe is continuously used to extract a part of air in the hemolysis zone 11 to enable the hemolysis zone 11 to be in a negative pressure state, the inner wall of the tube body 1 is provided with a hydrophobic coating, so that the phenomenon that blood drips onto the tube wall due to inclination of the tube body 1 in the blood collection process and does not mix with the hemolytic agent can be avoided, the edge area of the rubber sealing cover 3 is provided with a pinhole 31, the inner wall is designed to be an arc-shaped protrusion, so that the contact area with the blood collection needle 2 can be reduced and the friction force is reduced to facilitate the movement of the blood collection needle 2, the blood taking needle 2 is embedded into the needle hole 31 and can move along the needle hole 31 under the condition of stress, the blood taking needle 2 comprises a needle point 21 and a needle tail 24, the needle point 21 is a beveling plane and is convenient for fingertip puncture blood taking, a limit table 22 is arranged below the needle point 21, a limit ring 23 is clamped below the limit table 22 and can ensure that the blood taking needle 2 does not move when the blood taking device is not used, the portions of the blood taking needle 2 above the limit ring 23 and the needle tail 2 are higher than the plane of a rubber sealing cover 3, the stress of the blood taking needle 2 moves downwards when the fingertip 23 is taken down, the length of the exposed portion of the needle point 21 is 2mm, the fingertip cannot be excessively punctured, the needle tail 24 is a beveling plane, the distance between the needle tail 24 and the rubber sealing membrane 4 is 2-3mm, the stress moves downwards to enable the needle tail 24 of the blood taking needle 2 to pierce the rubber sealing membrane 4 after the fingertip 23 is taken down, and negative pressure attracts blood to enter the hemolysis area 11, before the hemostix is used, hemolytic agent needs to be added into the hemolytic region 11, blood enters the hemolytic region 11 and can be mixed and diluted with the hemolytic agent to improve uniformity and increase volume, and the hemostix can be provided with a protective cover to protect the blood taking needle 2 from being worn.

The utility model discloses concrete application during the use does:

when the device is used, firstly, the hemolytic agent is extracted by using the injector, the needle head of the injector sequentially penetrates the rubber sealing cover 3 and the rubber sealing membrane 4 to the hemolytic region 11 to be added with the hemolytic agent, after the hemolytic agent is added, the needle head is moved upwards to leave the liquid level, the injector extracts a part of air in the hemolytic region 11 to enable the hemolytic region 11 to be in a negative pressure state, because the rubber has good elasticity and sealing performance, the puncture hole of the superfine needle head does not affect the air tightness of the hemolytic region 11, the limiting ring 23 on the blood taking needle 2 is removed after the injector is pulled out, the fingertip 21 is used for puncturing and blood taking, the tube body 1 is kept vertical during puncturing as much as possible, the puncture needle 21 moves downwards during the puncturing process, the needle tail 24 punctures the rubber sealing membrane 4, the needle tip 21 punctures the fingertip by the slight friction resistance of the needle hole, the negative pressure causes the blood taken up by the needle tip 21 to be sucked into the hemolysis zone 11 and mixed with the hemolysis agent, and therefore the blood does not hang up even if the tube body 1 is tilted because of the hydrophobic coating on the tube wall.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims (4)

1. The utility model provides a fingertip hemostix for glycated haemoglobin assay appearance autoinjection, includes the hemostix body, its characterized in that: the hemostix body comprises a tube body and a rubber sealing diaphragm which is arranged inside the tube body and is bonded with the inner wall of the tube body, and a rubber sealing cover which is arranged at the top end of the tube body, wherein the lower side of the rubber sealing diaphragm is a hemolysis area, the upper edge area of the rubber sealing cover is provided with a needle hole, the inner wall of the needle hole is arc-shaped and is protruded, a blood taking needle is embedded into the needle hole and comprises a needle point and a needle tail, the needle point is a beveling plane, a limiting table is arranged below the needle point, a limiting ring is clamped below the limiting table, the limiting ring and the part of the blood taking needle above the limiting ring are higher than the plane of the rubber sealing cover, the needle tail is a beveling plane, and the distance from the needle tail to the rubber sealing diaphragm is 2-3 mm.

2. The fingertip blood collector for automatic sample feeding of a glycated hemoglobin analyzer as set forth in claim 1, wherein: the inner wall of the pipe body is provided with a hydrophobic coating.

3. The fingertip blood collector for automatic sample feeding of a glycated hemoglobin analyzer as set forth in claim 1, wherein: the length of the exposed part of the needle tip is 2 mm.

4. The fingertip blood collector for automatic sample feeding of a glycated hemoglobin analyzer as set forth in claim 1, wherein: the hemostix may be provided with a protective cover.

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