Visual blood sampling volume multi-test paper sampler

Abstract

The utility model discloses a multi-test paper sample adding device of visual blood sampling amount, including by upper and lower sequentially arranged upper cover plate, clamping piece channel layer and base layer, the clamping piece channel layer is connected with the setting of sample adding port, blood storage tank, capillary, waste liquid tank in proper order, and each component is connected through the flow channel, and a plurality of sample outlet channels are connected in communication and are arranged on the flow channel between the blood storage tank and the capillary. The base layer with clamping piece channel layer between has a plurality of insertion channels, and a plurality of flow channels with a plurality of insertion channels one to one, when test paper is inserted into the insertion channel, the flow channel outlet is located above test paper and is in contact with test paper. The sample adding device of the scheme realizes the sampling of a plurality of test papers for sample at the same time, and the multiple alignment operation is not needed, and the misoperation and detection time are reduced, the hand contact test paper is avoided, and the pollution and infection risk are reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrochemical detection sampling, and more specifically, to a multi-test strip sampler with visible blood sampling volume. Background Technology

[0002] Electrochemical detection devices, such as blood glucose meters, based on electrochemical methods, are now commonplace in households. These devices have evolved from traditional single-function devices to multi-functional devices capable of simultaneously performing multiple tests. Some of these multi-functional devices, to meet the need for simultaneous testing of multiple items, often feature multiple test strip ports. For users, this results in shorter testing times and greater convenience.

[0003] However, these instruments perform tests by examining human blood, which often requires users to prick their fingers with a lancet and add blood to the test strip. This significantly increases the possibility of user error and may require patients to prick their fingers multiple times. Furthermore, because multiple tests are performed simultaneously, users often cannot accurately determine the required blood volume with a single prick, making it difficult to perform multiple tests at once. This contradicts the original design intent of multi-functional testing devices—to perform multiple tests with a single blood sample.

[0004] Meanwhile, because patients have wounds on their hands, and the test strips are not sterile, contact between the hands and the test area of ​​the strip increases the risk of contamination and hand infection. Furthermore, the process of adding blood to multiple test wells increases the testing time, and the narrowness of the wells can make it difficult for elderly people to align the strips, leading to testing difficulties. Utility Model Content

[0005] The purpose of this invention is to provide a multi-sample applicator with visible blood collection volume to solve the technical problems existing in the background art.

[0006] This utility model provides a multi-test strip sampler with visible blood collection volume, comprising an upper cover plate, a clip channel layer, and a base layer arranged sequentially from top to bottom;

[0007] The clip channel layer is sequentially connected to a sample inlet, a blood collection tank, a capillary tube, and a waste liquid tank. The above components are connected through a flow guide channel. Several sample outlet channels are connected to the flow guide channel between the blood collection tank and the capillary tube.

[0008] There are several insertion channels between the base layer and the clip channel layer. Several flow channels correspond one-to-one with several insertion channels. When the test strip is inserted into the insertion channel, the outlet of the flow channel is located above the test strip and in contact with the test strip.

[0009] In a preferred embodiment, the capillary is bent and has an S-shaped orientation.

[0010] In a preferred embodiment, the top cover is made of colorless and transparent polymethyl methacrylate.

[0011] In a preferred embodiment, the sample inlet extends to the upper cover plate and is tapered.

[0012] In a preferred embodiment, the diameter of the flow guiding channel and the diameter of the sample outlet channel are adapted to each other, and both are larger than the diameter of the capillary tube.

[0013] The beneficial effects of this utility model's technical solution are:

[0014] This device's pipette allows for simultaneous sample dispensing to multiple test strips with a single blood draw, eliminating the need for multiple alignment operations, reducing errors and testing time; it also avoids hand contact with the test strips, lowering the risk of contamination and infection. The blood volume is visualized, allowing users to intuitively determine if the blood volume is sufficient, avoiding repeated blood draws and reducing pain and infection risks. The conical dispensing nozzle facilitates blood dripping, making it especially suitable for the elderly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is an exploded view of the structure of this utility model.

[0017] Figure 3 This is a schematic diagram of the clip channel layer structure of this utility model.

[0018] Explanation of reference numerals in the attached diagram: 1. Top cover plate, 2. Clip channel layer, 3. Base layer, 4. Sample inlet, 5. Blood collection tank, 6. Capillary tube, 7. Waste liquid tank, 8. Flow guide channel, 9. Sample outlet channel, 10. Insertion channel. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0020] like Figures 1-3As shown, the present invention provides a multi-test strip sampler with visible blood collection volume, comprising an upper cover plate 1, a clip channel layer 2, and a base layer 3 arranged sequentially from top to bottom. The upper cover plate 1, the clip channel layer 2, and the base layer 3 are encapsulated together to form the overall structure of the sampler.

[0021] The clip channel layer 2 is sequentially connected to a sample application port 4, a blood collection tank 5, a capillary tube 6, and a waste liquid tank 7. These components are connected via a flow guide channel 8. A plurality of sample outlet channels 9 are connected to the flow guide channel 8 between the blood collection tank 5 and the capillary tube 6. The base layer 3 and the clip channel layer 2 have a plurality of insertion channels 10. Each flow guide channel 8 corresponds one-to-one with a insertion channel 10. When the test strip is inserted into the insertion channel 10, the outlet of the flow guide channel 8 is located above and in contact with the test strip.

[0022] In the above scheme, after the blood sample to be tested enters through the sample inlet 4, it flows into the blood storage tank 5 through the guide channel 8 for temporary storage. Driven by the capillary force of the capillary tube 6, the blood in the blood storage tank 5 flows towards the capillary tube 6 through the guide channel 8. During the process, it is diverted to the test strip at the corresponding insertion channel 10 through several sample outlet channels 9 (because the guide channel 8 corresponds one-to-one with the insertion channel 10, and the outlet of the guide channel 8 is in contact with the test strip, the blood can directly enter the test strip under the siphon effect); the excess blood continues to flow to the waste liquid tank 7 for storage.

[0023] By using the corresponding design of multiple sample dispensing channels 9 and insertion channels 10, multiple test strips can be supplied with samples at the same time with a single blood collection, eliminating the need for users to add blood to multiple test strip wells multiple times, reducing the possibility of misoperation and shortening the testing time; at the same time, it avoids direct contact between the hands and the test area of ​​the test strip, reducing the risk of contamination and infection.

[0024] The capillary 6 is bent and oriented in an S-shape. The S-shaped bend in the capillary 6 extends the blood flow path, and the bend structure enhances the stability of capillary forces, making the blood more evenly stressed during flow and avoiding uneven distribution caused by excessively fast or slow flow rates. Compared to a straight capillary 6, the S-shaped structure drives blood flow more efficiently and reduces detection waiting time.

[0025] The sample inlet 4 extends to the upper cover plate 1 and is conical. The opening area of ​​the conical sample inlet 4 gradually decreases from top to bottom, which not only expands the area for adding blood at the top, making it convenient for users to drip blood in, but also guides the blood to flow quickly and centrally into the lower guide channel 8 through the conical structure, reducing blood residue at the sample inlet 4.

[0026] The top cover 1 is made of colorless and transparent polymethyl methacrylate (PMMA). This colorless and transparent material allows users to directly observe the blood filling status of the blood collection tank 5 in the clip channel layer 2 through the top cover 1, intuitively judging whether the blood volume meets the testing requirements (the volume of the blood collection tank 5 matches the required blood volume; when full, the requirement is met). This solution visualizes the blood collection volume, eliminating the need for users to judge the blood volume based on experience, avoiding repeated blood collection due to insufficient blood, reducing the pain of multiple needle pricks and the risk of hand infection; the PMMA material also has good chemical stability, is not prone to reacting with blood, and ensures reliable test results.

[0027] The diameters of the flow channel 8 and the sample outlet channel 9 are compatible, and both are larger than the diameter of the capillary tube 6. The larger diameters of the flow channel 8 and sample outlet channel 9 reduce blood flow resistance, ensuring that the blood in the blood collection tank 5 can be smoothly and sufficiently delivered to each sample outlet channel 9 and the test strip. The thinner capillary tube 6 enhances capillary suction, providing sufficient power for blood flow, driving the blood from the blood collection tank 5 towards the waste liquid tank 7, while avoiding excessively fast blood flow due to excessive suction. This balances the "power" and "resistance" of blood delivery, ensuring efficient distribution of blood to each test strip while avoiding channel blockage or abnormal flow rates, thus improving the stability and detection efficiency of the equipment.

[0028] This solution's pipette allows for simultaneous sample dispensing to multiple test strips with a single blood draw, eliminating the need for multiple alignment operations, reducing errors and testing time; it also avoids hand contact with the test strips, lowering the risk of contamination and infection. The blood volume is visualized, allowing users to intuitively assess whether the blood volume is sufficient, avoiding repeated blood draws and reducing pain and infection risks. The conical dispensing nozzle 4 facilitates blood dripping, especially suitable for the elderly; the S-shaped capillary tube 6 enhances blood flow stability, ensuring testing accuracy, and overall optimizing the testing experience.

[0029] Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of this utility model without creative effort should fall within the protection scope of this utility model. Structures, devices, and operating methods not specifically described and explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A multi-sample applicator for visually collecting blood volume, characterized in that: It includes, from top to bottom, an upper cover plate, a clip channel layer, and a base layer; The clip channel layer is sequentially connected to a sample inlet, a blood collection tank, a capillary tube, and a waste liquid tank. The above components are connected through a flow guide channel. Several sample outlet channels are connected to the flow guide channel between the blood collection tank and the capillary tube. There are several insertion channels between the base layer and the clip channel layer. Several flow channels correspond one-to-one with several insertion channels. When the test strip is inserted into the insertion channel, the outlet of the flow channel is located above the test strip and in contact with the test strip.

2. The multi-sample applicator for visually collecting blood volume according to claim 1, characterized in that: The capillary tube is bent and has an S-shaped orientation.

3. The multi-sample applicator for visually collecting blood volume according to claim 1, characterized in that: The top cover is made of colorless and transparent polymethyl methacrylate.

4. The multi-sample applicator for visually collecting blood volume according to claim 1, characterized in that: The sample inlet extends to the upper cover plate and is tapered.

5. A multi-sample applicator for visually collecting blood volume according to claim 1, characterized in that: The diameter of the flow guiding channel and the diameter of the sample outlet channel are adapted to each other, and both are larger than the diameter of the capillary tube.

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