Trace arterial blood sample collector

Abstract

The utility model discloses a trace arterial blood sample collector which comprises a main body assembly, a sealing assembly is arranged at the top end of the main body assembly, a protective sleeve is arranged at the bottom end of the main body assembly, a Luer cap is arranged on one side of the main body assembly, and a connecting strip B used for connection is arranged between the Luer cap and the main body assembly. The surface of the main body assembly is provided with a positioning assembly for preventing the Luer cap from shaking randomly; the Luer cap and the main body assembly are arranged to be of a connected structure through the connecting strip B, so that the phenomenon of falling or rolling in the package dismounting or using process is prevented, the Luer cap can be conveniently and rapidly taken, and the bottom end of the main body assembly is blocked; through the positioning assembly, the Luer cap can be positioned when the Luer cap is not used, the Luer cap is prevented from shaking at will to affect blood sampling operation, the positioning assembly can serve as an anti-skid structure, friction force between the hand of a medical worker and the main body assembly is increased, and the anti-skid effect is achieved; and the phenomenon of secondary injury of a patient caused by puncture failure due to hand slip is effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of blood collection device technology, and in particular to a micro-volume arterial blood sample collector. Background Technology

[0002] Blood gas acid-base analysis detects gases present in the blood and is an important indicator of respiratory physiological function. Currently, some blood gas analyses combine electrolyte (Na, K, Cl, Ca) and some biochemical tests. Blood gas samples are mainly collected from the radial artery, forearm artery, and femoral artery.

[0003] Blood gas samples can be collected using a blood sample collector, which not only solves the problems of automatic blood collection and quantitative blood volume, but also makes arterial blood collection simpler and more convenient.

[0004] Patent document CN221690959U discloses an arterial blood sample collector, comprising a housing, a blood collection needle mounted at the front end of the housing for collecting blood samples, an atmospheric communication hole on the housing, a hemostatic element near the inner side of the atmospheric communication hole, an vent plug mounted on the hemostatic element, the vent plug being located at the end of the blood flow path, allowing gas to pass through but preventing both gas and liquid from passing through upon contact with liquid, a hemostatic element mounting hole on the side of the housing, a side protrusion of the hemostatic element being inserted into the hemostatic element mounting hole, a connecting hole C on the side protrusion of the hemostatic element, and a plug on the connecting hole C, the plug being removable and capable of completely filling the connecting hole C for sealing. This completely isolates the sample from external air, preventing the formation of a gas cavity inside the sample holder after blood collection, avoiding changes in the gas concentration in the blood from affecting the accuracy of the test results, while also allowing for small blood collection volumes and fast blood collection speed.

[0005] Although the aforementioned arterial blood sample collector can solve the corresponding technical problems, the process of removing the blood collection needle and connecting the Luer cap for sealing after blood sample collection is complicated by the large number of accessories and the small size of the Luer cap. During unpacking or use, accessories are prone to falling or rolling, causing contamination of accessories and making it difficult to seal the blood sample in time. This results in the blood being exposed to the air for a long time, affecting the accuracy of the test results.

[0006] To address this, a micro-volume arterial blood sampler is proposed. Utility Model Content

[0007] The purpose of this invention is to provide a micro-volume arterial blood sample collector to solve the problems mentioned in the background art.

[0008] To achieve the above objectives, the main technical solutions adopted by this utility model include:

[0009] A micro-volume arterial blood sample collector, comprising:

[0010] The main component has a sealing component at its top, a protective sleeve at its bottom, a Luer cap on one side, a connecting strip B between the Luer cap and the main component, and a positioning component on the surface of the main component to prevent the Luer cap from swinging freely.

[0011] The positioning component includes a ring disposed on the surface of the main component, and a snap-fit ​​connector for detachable connection is provided between the ring and the Luer cap.

[0012] As a preferred technical solution, the snap-fit ​​component includes a protrusion fixedly connected to the surface of the ring, a groove is provided on one side of the protrusion, and a convex ball that can be snapped into the inner cavity of the groove is fixedly connected to the surface of the Luer cap.

[0013] As a preferred technical solution, both the ring and the protrusion are made of transparent silicone material, and the opening diameter of the groove is smaller than the diameter of the convex ball.

[0014] As a preferred technical solution, the main component includes a shell, a glass capillary tube is fixedly connected to the center of the inner cavity of the shell, a blood collection needle communicating with the glass capillary tube is sleeved at the bottom end of the shell, a sealing component is disposed at the top end of the shell, a protective sleeve is sleeved on the blood collection needle, a Luer cap can be sleeved on the bottom end of the shell, the two ends of the connecting strip B are respectively fixedly connected between the Luer cap and the shell, and the ring is fixedly connected to the surface of the shell.

[0015] As a preferred technical solution, the sealing assembly includes a cap fixedly connected to the top of the outer shell, a three-way tube fixedly connected to the inner cavity of the cap, the bottom end of the three-way tube communicating with a glass capillary tube, a vent hole communicating with the top end of the three-way tube at the top of the cap, the side end of the three-way tube extending to the outside of the cap, and a sealing element A for sealing the side end of the three-way tube on the cap.

[0016] As a preferred technical solution, the inner cavity of the three-way tube is provided with a hemostatic element, which is located near the vent.

[0017] As a preferred technical solution, the sealing component A includes a plug that is inserted into the side end of the tee pipe, one end of the plug is fixedly connected to a finger plate, and a connecting strip A is fixedly connected between the top of the finger plate and the cap.

[0018] This utility model has at least the following beneficial effects:

[0019] In this application, the Luer cap and the main component are integrated into a single structure via connecting strip B to prevent them from falling or rolling during unpacking or use. This facilitates quick retrieval and seals the bottom of the main component. The positioning component not only positions the Luer cap when not in use, preventing it from swinging and affecting blood collection, but also serves as an anti-slip structure, increasing the friction between the medical staff's hands and the main component, thus preventing slippage and secondary injury to the patient due to failed punctures. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the micro-volume arterial blood sample collector of this utility model;

[0021] Figure 2 This is a cross-sectional schematic diagram of the micro-volume arterial blood sample collector of this utility model;

[0022] Figure 3 A schematic diagram of the micro-volume arterial blood sample collector of this utility model in the test delivery state;

[0023] Figure 4 This utility model relates to a micro-volume arterial blood sample collector. Figure 2 A schematic diagram of the structure at point A in the middle.

[0024] In the diagram: 100, main component; 110, outer shell; 120, glass capillary tube; 130, blood collection needle; 200, sealing component; 210, cap; 211, vent; 220, tee tube; 230, hemostatic component; 240, sealing component A; 241, plug; 242, finger plate; 243, connecting strip A; 300, protective sleeve; 400, Luer cap; 500, connecting strip B; 600, positioning component; 610, ring; 620, protrusion; 630, groove; 640, convex ball. Detailed Implementation

[0025] 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.

[0026] Please see Figures 1-4This utility model provides a micro-volume arterial blood sample collector, including a main body component 100, a sealing component 200 at its top, a protective sleeve 300 at its bottom, a Luer cap 400 on one side of the main body component 100, a connecting strip B500 between the Luer cap 400 and the main body component 100, and a positioning component 600 on the surface of the main body component 100 to prevent the Luer cap 400 from shaking arbitrarily; the positioning component 600 includes a ring 610 on the surface of the main body component 100, and a snap-fit ​​member between the ring 610 and the Luer cap 400 for detachable connection.

[0027] The snap-fit ​​component includes a protrusion 620 fixedly connected to the surface of the ring 610. A groove 630 is provided on one side of the protrusion 620. A protruding ball 640 that can be snapped into the inner cavity of the groove 630 is fixedly connected to the surface of the Luer cap 400. The snap-fit ​​component enables the ring 610 and the Luer cap 400 to be detachably connected, making it convenient to quickly remove the Luer cap 400 from the main component 100, so as to achieve a quick sealing operation on the main component 100.

[0028] Both the ring 610 and the protrusion 620 are made of transparent silicone. The opening diameter of the groove 630 is smaller than the diameter of the convex ball 640, so that when the convex ball 640 is removed from the groove 630, the protrusion 620 can be deformed under force to remove the convex ball 640 from the groove 630. At the same time, the silicone material can increase the friction between the convex ball 640 and the inner wall of the groove 630, improving the snap-fit ​​stability. The transparent silicone material can also prevent the ring 610 and the protrusion 620 from obstructing the view of the blood sample collection in the main component 100, making it convenient for observation.

[0029] The main component 100 includes a housing 110, with a glass capillary tube 120 fixedly connected to the center of the inner cavity of the housing 110. A blood collection needle 130, communicating with the glass capillary tube 120, is sleeved at the bottom end of the housing 110. The blood collection needle 130 can be a straight, needle-puncture-resistant needle or a flexible, single-winged needle to accommodate different operator habits and blood collection conditions. A sealing component 200 is located at the top of the housing 110 and serves to seal the glass capillary tube 120. For sealing purposes, the protective sleeve 300 is fitted onto the blood collection needle 130 to protect it. The Luer cap 400 can be fitted onto the bottom of the outer shell 110 to seal the bottom of the main component 100 after blood collection, thus sealing the sample. The two ends of the connecting strip B500 are fixedly connected between the Luer cap 400 and the outer shell 110, respectively. The ring 610 is fixedly connected to the surface of the outer shell 110.

[0030] The sealing assembly 200 includes a cap 210 fixedly connected to the top of the housing 110. A three-way tube 220 is fixedly connected to the inner cavity of the cap 210. The bottom end of the three-way tube 220 is connected to the glass capillary tube 120. A vent hole 211 is opened at the top of the cap 210 and is connected to the top end of the three-way tube 220. The side end of the three-way tube 220 extends to the outside of the cap 210. The cap 210 is provided with a sealing element A240 for sealing the side end of the three-way tube 220.

[0031] The inner cavity of the three-way tube 220 is equipped with a hemostatic element 230. The hemostatic element 230 is located near the vent 211. The hemostatic element 230 allows gas to pass through, but after contact with liquid, neither liquid nor gas can pass through, thus achieving an automatic sealing function. The hemostatic element 230 is a high-molecular porous material. Its pores contain colloidal particles that expand when they come into contact with liquid. After the colloidal particles expand, they seal the pores. This is existing technology, so it will not be described in detail in this technical solution.

[0032] The sealing component A240 includes a plug 241 that is plugged into the side end of the three-way tube 220. One end of the plug 241 is fixedly connected to a finger plate 242. A connecting strip A243 is fixedly connected between the top of the finger plate 242 and the cap 210. With the external sealing component A240, the plug 241 can be removed during blood gas analysis, which facilitates the injection of samples into the blood gas analyzer.

[0033] The working principle of this utility model is as follows: Select the arterial puncture site, disinfect the puncture point and surrounding area, remove the micro-volume arterial blood sample collector, remove the protective sleeve 300 from the sealing component 200, ensuring that the sealing component A240 is in a closed state, hold the outer shell 110, and puncture the blood collection needle 130 with the bevel facing upward at an angle of 15~30°. Stop the needle insertion after seeing blood return. Blood will quickly and automatically fill the glass capillary tube 120. When the blood sample reaches the end of the glass capillary tube 120, the hemostatic component 230 will automatically seal upon contact with moisture, stopping the blood from entering the glass capillary tube 120, thus completing the blood collection operation; insert the blood collection needle 130 vertically into the rubber block according to the specifications. Remove the blood collection needle 130 and take the Luer cap 400, causing the Luer cap 400 to move the convex ball 640. The convex block 620 deforms under force until the convex ball 640 disengages from the inner cavity of the groove 630. Then, remove the Luer cap 400 and put it on the outer shell 110 to complete the sample sealing operation. Attach the patient information label to the surface of the outer shell 110 and send it for testing. When performing blood gas analysis, keep the micro-volume arterial blood sample collector in a horizontal position. Remove the Luer cap 400 and then pull out the plug 241 through the finger plate 242 to connect the side end of the three-way tube 220 to the atmosphere, facilitating sample introduction into the blood gas analyzer. Finally, the test can be performed.

[0034] It is worth noting that the micro-arterial blood sample collector provided by this utility model can be made into adult size models and children's size models to facilitate use by adults and children respectively.

[0035] When the micro-arterial blood sample collector provided by this utility model is made in a children's size, it is mainly used in pediatrics. The specific design is as follows:

[0036] Blood lancet design 130:

[0037] Children's Model: The 130 lancet is designed specifically for children, and is typically thinner and softer to reduce pain and discomfort for children during blood collection. The fine tip allows for easier skin penetration while minimizing tissue damage.

[0038] Needle-proof design: Considering that children may try to touch the lancet due to fear or hyperactivity, the lancet 130 is designed to prevent needle-puncture. The lancet 130 is equipped with a protective sleeve 300 to prevent accidental puncture. The protective sleeve 300 is designed to be easy for adults to operate, while ensuring that children cannot easily remove it, ensuring that even if accidentally touched, no accidental injury will be caused.

[0039] Sensitive skin friendly: The sealing component 200 and its internal T-tube 220, hemostatic component 230, and other parts that come into contact with children's skin are made of hypoallergenic materials to reduce skin irritation and allergic reactions.

[0040] Automatic hemostasis function: The automatic sealing function of the hemostasis component 230 when wet is especially important for children, which can ensure rapid hemostasis after sufficient blood sample is collected, reducing discomfort and bleeding risk in children.

[0041] Easy-to-use design: The Luer cap 400, its connecting strip B500, and positioning components 600 (including ring 610, protrusion 620, groove 630, and convex ball 640) are designed for easy one-handed operation by children's parents or medical personnel to quickly and safely seal samples.

[0042] Safety Locking: The snap-fit ​​design of the positioning component 600 ensures that the Luer cap 400 will not fall off accidentally during collection and transportation, while also being easy to remove quickly when needed.

[0043] Size and color:

[0044] Size adjustment: The size of the overall collector (including the main component 100, sealing component 200, etc.) can be adjusted appropriately according to the size of a child's hand and gripping habits to improve the comfort and convenience of use.

[0045] Warm colors: Bright and warm colors and cartoon patterns can be used for parts such as the outer shell 110 and the cap 210 to increase children's curiosity and acceptance and reduce their fear.

[0046] Operating instructions and educational materials:

[0047] A concise and clear user guide: This guide provides a clear and concise user guide for parents of children, including how to prepare, how to cooperate, and precautions after data collection.

[0048] Interactive demonstrations and educational materials: Use animations, videos, or physical models to create interactive demonstrations that help children understand the collection process, reduce their fear, and teach them how to cooperate with medical staff.

[0049] In summary, the pediatric micro-arterial blood sampler design takes into account children's physiological characteristics, psychological acceptance, and safety requirements. By optimizing the blood collection needle design, sealing component material, ease of operation of the Luer cap and positioning component, size and color adjustment, and providing operation instructions and educational materials, it provides a more user-friendly, safe, and efficient collection solution.

[0050] All parts not described in this utility model are the same as or can be implemented using existing technology. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A micro-volume arterial blood sample collector, characterized in that, include: The main body component (100) has a sealing component (200) at its top end, a protective sleeve (300) at its bottom end, a Luer cap (400) on one side of the main body component (100), a connecting strip B (500) for connection between the Luer cap (400) and the main body component (100), and a positioning component (600) on the surface of the main body component (100) for preventing the Luer cap (400) from shaking randomly. The positioning component (600) includes a ring (610) disposed on the surface of the main component (100), and a snap-fit ​​connector for detachable connection is provided between the ring (610) and the lure cap (400).

2. The micro-volume arterial blood sample collector according to claim 1, characterized in that: The snap-fit ​​component includes a protrusion (620) fixedly connected to the surface of the ring (610), a groove (630) is provided on one side of the protrusion (620), and a convex ball (640) that can be snapped into the cavity of the groove (630) is fixedly connected to the surface of the Luer cap (400).

3. The micro-volume arterial blood sample collector according to claim 2, characterized in that: Both the ring (610) and the protrusion (620) are made of transparent silicone material, and the opening diameter of the groove (630) is smaller than the diameter of the convex ball (640).

4. The micro-volume arterial blood sample collector according to claim 3, characterized in that: The main component (100) includes a shell (110), a glass capillary tube (120) is fixedly connected to the center of the inner cavity of the shell (110), a blood collection needle (130) communicating with the glass capillary tube (120) is sleeved at the bottom end of the shell (110), a sealing component (200) is provided at the top end of the shell (110), a protective sleeve (300) is sleeved on the blood collection needle (130), a Luer cap (400) can be sleeved on the bottom end of the shell (110), the two ends of the connecting strip B (500) are fixedly connected between the Luer cap (400) and the shell (110) respectively, and the ring (610) is fixedly connected to the surface of the shell (110).

5. The micro-volume arterial blood sample collector according to claim 4, characterized in that: The sealing assembly (200) includes a cap (210) fixedly connected to the top of the outer shell (110). A three-way tube (220) is fixedly connected to the inner cavity of the cap (210). The bottom end of the three-way tube (220) is connected to the glass capillary tube (120). A vent hole (211) is opened on the top of the cap (210) and communicates with the top end of the three-way tube (220). The side end of the three-way tube (220) extends to the outside of the cap (210). A sealing element A (240) for sealing the side end of the three-way tube (220) is provided on the cap (210).

6. The micro-volume arterial blood sample collector according to claim 5, characterized in that: The inner cavity of the three-way tube (220) is provided with a hemostatic element (230), which is located near the vent (211).

7. The micro-volume arterial blood sample collector according to claim 6, characterized in that: The sealing component A (240) includes a plug (241) that is plugged into the side end of the tee pipe (220). One end of the plug (241) is fixedly connected to a finger plate (242), and a connecting strip A (243) is fixedly connected between the top of the finger plate (242) and the cap (210).

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