Capsule type blood sampling device for blood detection

Abstract

The utility model relates to the technical field of blood sampling devices, in particular to a capsule type blood sampling device for blood detection, which comprises a shell, an inner container is arranged in the shell, a double-layer vacuum heat preservation layer is arranged between the shell and the inner container, and an anti-impact buffer layer positioned in the outer side space of the double-layer vacuum heat preservation layer is arranged on the inner wall of the shell. The outer surface of the inner container is wrapped with a phase change material layer located in the inner side space of the double-layer vacuum heat preservation layer, a double-sealing base is arranged at the edge opening connecting position of the shell and the top end of the inner container, a receiving opening is formed in the center of the top of the inner container, and a disposable blood sampling needle is installed on the receiving opening. According to the capsule type blood sampling device for blood detection, the sample protection capacity under the extreme temperature condition is remarkably improved, the anti-vibration and anti-impact performance in the transportation process is enhanced, and therefore the quality of a blood sample and the accuracy of a detection result are ensured.

Description

Technical Field

[0001] This utility model relates to the field of blood collection device technology, specifically a capsule-type blood testing and blood collection device. Background Technology

[0002] In modern medical testing, the collection and preservation of blood samples are crucial for ensuring diagnostic accuracy. With advancements in technology, the requirements for blood collection devices are also increasing. They must not only guarantee the safety and convenience of the blood collection process but also maintain the original state of the blood sample as much as possible to avoid distortion of test results due to external environmental influences.

[0003] Patent CN215839083U discloses a capsule-type blood collection device. This invention effectively isolates the blood sample from external temperature by setting a vacuum layer between its inner and outer layers. A special medical-grade rubber layer facilitates blood collection for medical personnel. Furthermore, the main body of the device adopts an elongated oval design and is equipped with graduation lines for accurate blood volume measurement. This innovative design significantly extends the shelf life of blood samples and improves the reliability of test results.

[0004] Although this invention has made progress in extending the preservation time of blood samples and improving the convenience of blood collection, there are still some areas for improvement: First, although the existing device has a good heat preservation effect, it may not be able to completely prevent changes in the quality of blood samples under extreme temperature conditions, such as high or low temperature environments; second, the device mainly focuses on blood preservation under static conditions and does not adequately consider external factors such as vibration and impact that may be encountered during dynamic transportation. Utility Model Content

[0005] The purpose of this invention is to provide a capsule-type blood collection device to solve the problems mentioned in the background art, such as the susceptibility of blood sample quality to extreme temperature conditions and the potential harm to samples from vibration and impact during dynamic transportation.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a capsule-type blood collection device, comprising an outer shell, an inner liner inside the outer shell, a double-layer vacuum insulation layer between the outer shell and the inner liner, an impact-resistant buffer layer located outside the double-layer vacuum insulation layer on the inner wall of the outer shell, a phase change material layer located inside the double-layer vacuum insulation layer covering the outer surface of the inner liner, a double sealing seat at the connection between the top edge of the outer shell and the inner liner, and a receiving port at the center of the top of the inner liner, on which a disposable blood collection needle is installed.

[0007] Preferably, the double-layer vacuum insulation layer consists of an outer layer of high-reflectivity metal foil and an inner layer of microporous silicone, with the two layers filling the space between the impact-resistant buffer layer and the phase change material layer.

[0008] Preferably, the outer wall of the double sealing seat is provided with an outer sealing element that fits onto the top edge of the outer shell, and the inner wall of the double sealing seat is provided with an inner sealing element that fits onto the outer wall of the top of the inner liner.

[0009] Preferably, the needle seat portion of the disposable blood collection needle is provided with a connecting stud, and the inside of the receiving port is provided with a threaded interface that matches the connecting stud structure of the disposable blood collection needle.

[0010] Preferably, the outer wall of the receiving port is provided with a reinforcing block fixed to the top of the inner liner, and the top of the reinforcing block is surrounded by a number of reinforcing ribs.

[0011] Preferably, the phase change material layer is composed of multiple composite materials, and a high-efficiency thermal conductivity interface material is provided between the phase change material layer and the inner liner.

[0012] Compared with existing technologies, the beneficial effects of this invention are as follows: This capsule-type blood collection device significantly improves sample protection under extreme temperature conditions and enhances its resistance to vibration and impact during transportation, thereby ensuring the quality of blood samples and the accuracy of test results. The device effectively isolates the sample from external temperature through a double-layer vacuum insulation layer design; the shock-resistant buffer layer absorbs and disperses vibration and impact during transportation; the phase change material layer regulates the temperature inside the liner to maintain a constant environment; the double sealing seat ensures the airtightness of the device and prevents leakage; and the threaded interface design between the receiving port and the disposable blood collection needle ensures the safety and convenience of blood collection. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of a capsule-type blood testing and collection device according to the present invention;

[0014] Figure 2 This is a top view of the structure of a capsule-type blood testing and collection device according to the present invention;

[0015] Figure 3 This is a schematic diagram of the external structure of a capsule-type blood testing and collection device according to the present invention.

[0016] In the diagram: 1. Outer shell; 2. Inner liner; 3. Double-layer vacuum insulation layer; 4. Impact-resistant buffer layer; 5. Phase change material layer; 6. Double sealing seat; 61. Outer sealing element; 62. Inner sealing element; 7. Receiving port; 8. Disposable blood collection needle; 9. Reinforcing block; 91. Reinforcing rib. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-3This utility model provides a technical solution: a capsule-type blood collection device, including an outer shell 1, with several anti-slip stripes surrounding the outer wall of the outer shell 1, an inner liner 2 inside the outer shell 1, a double-layer vacuum insulation layer 3 between the outer shell 1 and the inner liner 2, an impact-resistant buffer layer 4 located outside the space of the double-layer vacuum insulation layer 3 on the inner wall of the outer shell 1, a phase change material layer 5 located inside the space of the double-layer vacuum insulation layer 3 covering the outer surface of the inner liner 2, and a double sealing seat 6 at the edge connection of the top of the outer shell 1 and the inner liner 2, and a receiving port 7 at the center of the top of the inner liner 2, on which a disposable blood collection needle 8 is installed. This structure effectively isolates the blood sample from the influence of external temperature through the double-layer vacuum insulation layer 3 between the outer shell 1 and the inner liner 2, ensuring... Even under extreme temperature conditions, such as high or low temperature environments, the quality of blood samples is fully protected. The shock-resistant buffer layer 4 is tightly fitted between the inner wall of the outer shell 1 and the double-layer vacuum insulation layer 3. During dynamic transportation, it absorbs and disperses vibrations and impacts, preventing external physical factors from damaging the inner liner 2 and the samples inside. The phase change material layer 5 regulates the temperature inside the inner liner 2 through its unique phase change properties, maintaining a constant environment and further enhancing the preservation effect of blood samples. The double sealing seat 6 ensures the airtightness of the device while facilitating operation. The inner receiving port 7 and the disposable blood collection needle 8 are securely connected, ensuring the safety and convenience of the blood collection process. This device not only significantly extends the shelf life of blood samples but also improves detection efficiency. The results are reliable, and the problems of sample quality changes under extreme temperature conditions and insufficient protection against vibration and shock during transportation in existing technologies are solved. A more stable and safer blood collection solution for testing is provided. The double-layer vacuum insulation layer 3 consists of an outer high-reflectivity metal foil and an inner microporous silicone layer, which fill the space between the shock-resistant buffer layer 4 and the phase change material layer 5. This structure effectively reflects external heat radiation and prevents heat transfer to the inner liner 2, while the inner microporous silicone layer further reduces heat conduction, ensuring that the quality of blood samples is fully protected even under extreme temperature conditions. The outer wall of the double-sealing seat 6 is provided with an outer sealing element 6 that fits onto the top edge of the outer shell 1. 1. The inner wall of the double-sealed seat 6 is provided with an inner sealing element 62 that fits against the outer wall of the top of the inner liner 2. The outer sealing element 61 of the double-sealed seat 6 fits tightly against the top edge of the outer shell 1, forming the first sealing barrier to prevent external air and contaminants from entering the device. Simultaneously, the inner sealing element 62 fits tightly against the outer wall of the top of the inner liner 2, forming the second sealing barrier to ensure complete isolation of the blood sample inside the inner liner 2 from the outside environment. This double-sealing design not only improves the airtightness of the entire device but also enhances the convenience and reliability of operation, ensuring the stability and purity of the sample environment during blood collection and transportation. This effectively prevents sample contamination and deterioration, ensuring the accuracy of the test results. The needle seat of the disposable blood collection needle 8 is provided with a connecting stud.Furthermore, the receiver 7 has an internal threaded interface that matches the connecting stud structure of the disposable blood collection needle 8. This structure allows the operator to screw the connecting stud of the disposable blood collection needle 8 into the threaded interface inside the receiver 7, achieving a secure and reliable connection, preventing loosening or detachment. It also facilitates quick needle replacement and installation by medical personnel, improving operational convenience and safety. The outer wall of the receiver 7 has a reinforcing block 9 fixed to the top of the inner liner 2, and the top of the reinforcing block 9 is surrounded by several reinforcing ribs 91. This structure provides additional support for the receiver 7, ensuring its structural strength and stability. The reinforcing ribs 91 further enhance local rigidity, effectively dispersing external pressure and impact, preventing deformation or damage to the receiver 7 due to uneven stress. This not only improves the overall strength of the receiver 7 and its surrounding area, ensuring the stability and sealing of the disposable blood collection needle 8 during installation, but also guarantees the safety and reliability of the blood sample collection process. The phase change material layer 5 is composed of multiple composite layers. The material composition specifically includes a polymer matrix and various phase change material microcapsules embedded within it. A highly efficient thermally conductive interface material is provided between the phase change material layer 5 and the inner liner 2. This structure allows the phase change material layer 5 to absorb or release latent heat at specific temperatures through its internal phase change material, regulating and maintaining temperature stability within the inner liner 2. The polymer matrix not only provides structural support but also ensures the uniform distribution and long-term stability of the phase change material. Furthermore, the surrounding phase change material microcapsules can undergo phase changes within different temperature ranges, effectively coping with temperature fluctuations under various environmental conditions. The highly efficient thermally conductive interface material (such as graphite sheets or thermally conductive silicone) is tightly bonded between the phase change material layer 5 and the inner liner 2, rapidly transferring heat and ensuring the phase change material can quickly respond to temperature changes. This more effectively regulates the temperature environment within the inner liner 2, thereby enhancing the preservation effect of blood samples under extreme temperature conditions, significantly extending the shelf life of blood samples, and improving the reliability of test results.

[0019] Working principle: When using this capsule-type blood collection device, firstly, the connecting stud of the disposable blood collection needle 8 is screwed into the threaded interface inside the receiving port 7 to ensure a secure and reliable connection. Next, medical personnel install a double sealing seat 6 at the top edge of the outer shell 1, ensuring a tight fit between the outer sealing element 61 and the top edge of the outer shell 1, while simultaneously ensuring a tight fit between the inner sealing element 62 and the outer wall of the inner liner 2, maintaining the airtightness of the device. Then, the disposable blood collection needle 8 is inserted into the patient's blood vessel for blood collection, and the blood sample smoothly enters the inner liner 2. During this process, the phase change material microcapsules in the phase change material layer 5... Based on the absorption or release of latent heat according to the ambient temperature, the temperature inside the inner liner 2 is regulated. The highly efficient heat conduction interface material quickly transfers heat to ensure temperature stability. At the same time, the outer high-reflectivity metal foil of the double-layer vacuum insulation layer 3 reflects external heat radiation, and the inner microporous silicone reduces heat conduction, further isolating the influence of external temperature. After blood collection, during transportation, the impact-resistant buffer layer 4 absorbs and disperses vibration and impact, protecting the inner liner 2 and the blood sample inside from damage. The reinforcing block 9 and the reinforcing ribs 91 surrounding its top provide additional support to prevent deformation or damage to the receiving port 7, thus completing a series of functions.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A capsule-type blood collection device, comprising a shell (1), characterized in that: The outer shell (1) is provided with an inner liner (2), and a double vacuum insulation layer (3) is provided between the outer shell (1) and the inner liner (2). The inner wall of the outer shell (1) is provided with an impact-resistant buffer layer (4) located in the space outside the double vacuum insulation layer (3). The outer surface of the inner liner (2) is wrapped with a phase change material layer (5) located in the space inside the double vacuum insulation layer (3). A double sealing seat (6) is provided at the connection between the top edge of the outer shell (1) and the inner liner (2). A receiving port (7) is provided at the center of the top of the inner liner (2). A disposable blood collection needle (8) is installed on the receiving port (7).

2. The capsule-type blood collection device according to claim 1, characterized in that: The double-layer vacuum insulation layer (3) is composed of an outer high-reflectivity metal foil and an inner microporous silicone, which fill the space between the impact-resistant buffer layer (4) and the phase change material layer (5).

3. The capsule-type blood collection device according to claim 1, characterized in that: The outer wall of the double sealing seat (6) is provided with an outer sealing element (61) that fits onto the top edge of the outer shell (1), and the inner wall of the double sealing seat (6) is provided with an inner sealing element (62) that fits onto the outer wall of the top of the inner liner (2).

4. The capsule-type blood collection device according to claim 1, characterized in that: The needle seat of the disposable blood collection needle (8) is provided with a connecting stud, and the inside of the receiving port (7) is provided with a threaded interface that matches the connecting stud structure of the disposable blood collection needle (8).

5. A capsule-type blood collection device for testing blood according to claim 4, characterized in that: The outer wall of the receiving port (7) is provided with a reinforcing block (9) fixed to the top of the inner liner (2), and the top of the reinforcing block (9) is surrounded by several reinforcing ribs (91).

6. The capsule-type blood collection device for testing according to claim 1, characterized in that: The phase change material layer (5) is composed of multiple composite materials, and a high-efficiency thermal conductivity interface material is provided between the phase change material layer (5) and the inner liner (2).

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