A peripheral blood collection device for newborns

Abstract

The present invention belongs to the field of medical care technology, and discloses a peripheral blood collection device for newborns, including a base, a blood collection tube installed on the base, a first sealing plug on the blood collection tube, a straw on the first sealing plug, a negative pressure channel in the base, a second sealing plug and a piston in the negative pressure channel, two ends of a connecting pipe are respectively installed on the first sealing plug and the second sealing plug, the lower end of the piston is connected to an attraction seat, a first magnetic block is provided on the attraction seat, a pressing slide is slidably provided on the side of the base, and a second magnetic block is provided on the pressing slide. A peripheral blood collection device for newborns provided by the present invention, when blood is collected, the slide is pressed downward according to the amount of bleeding, the second magnetic block moves downward with the slide, and the magnetic force of the second magnetic block and the first magnetic block attracting each other drags the piston downward to adjust the negative pressure in the blood collection tube until blood collection is completed, which can avoid bruises on the heel of the newborn caused by excessive squeezing of the tissues around the blood collection point, and ensure a sufficient amount of blood collected.

Description

Technical Field

[0001] The invention belongs to the technical field of medical care, and in particular relates to a peripheral blood collection device for newborns. Background Art

[0002] Blood collection is one of the daily tasks of medical staff in the laboratory. Venous blood and peripheral blood are commonly used blood test samples in clinical practice. In clinical departments such as pediatrics and neonatology, which mainly serve children and infants, it is becoming more and more common to collect peripheral blood for routine blood tests, biochemistry and other tests. Venous blood collection in newborns is more difficult than in adults due to poor compliance with blood collection and thin blood vessels, and non-standard blood collection techniques will affect the accuracy of the test results.

[0003] The Chinese consensus on peripheral blood sampling recommends the heel as the site for collecting peripheral blood from newborns. During the collection, the surrounding tissues need to be squeezed intermittently to increase blood flow. A disposable blood collection needle is used to pierce the skin, squeeze out the blood, discard the first drop of blood, and collect it in a micro-blood collection tube. The micro-blood collection tube is a non-negative pressure blood collection tube. Too much blood is prone to blood clots, and insufficient blood can lead to changes in blood cell morphology and failure of quantitative detection items. If the blood at the collection site has coagulated, the blood collection site needs to be changed and re-collected. In addition, squeezing the surrounding tissues to increase blood flow may activate the patient's coagulation pathway, increase the probability of platelet aggregation, and then lead to a false decrease in platelet count. Summary of the invention

[0004] The present invention aims to solve the above technical problems at least to a certain extent. To this end, the present invention aims to provide a peripheral blood sampling device for newborns.

[0005] The technical solution adopted by the present invention is:

[0006] A peripheral blood collection device for newborns comprises a base, on which a blood collection tube is detachably mounted, the blood collection tube is provided with a first sealing plug, the first sealing plug is provided with a straw, a negative pressure channel is provided in the base, a second sealing plug and a piston are provided in the negative pressure channel, two ends of a connecting tube are respectively mounted on the first sealing plug and the second sealing plug, the lower end of the piston is connected to an attraction seat, the attraction seat is provided with a first magnetic block, a side surface of the base is slidably provided with a pressing slide seat, the pressing slide seat is provided with a second magnetic block arranged corresponding to the first magnetic block.

[0007] Preferably, the attraction seat is provided with two first magnetic blocks, which are horizontally distributed on a side of the attraction seat facing the pressing slide seat, and the pressing slide seat is provided with two second magnetic blocks, each of which corresponds to one first magnetic block.

[0008] Preferably, the side of the negative pressure channel facing the pressing slide is a vertical plane, and the side of the base on which the pressing slide is mounted is parallel to the vertical plane.

[0009] Preferably, a slide rail is provided on the side of the base, and the press slide is slidably installed on the slide rail.

[0010] Preferably, a plastic clip is provided on the side of the base, and the cross section of the plastic clip is in an "Ω" shape.

[0011] Preferably, scale lines are provided on the side wall of the base.

[0012] Preferably, a suction cup is connected to the suction tube.

[0013] The beneficial effects of the present invention are:

[0014] The present invention provides a neonatal peripheral blood collection device. When collecting blood, the slide seat is pressed downward according to the amount of bleeding, and the second magnetic block moves downward with the slide seat. The magnetic force of the second magnetic block and the first magnetic block attracting each other drags the piston downward to adjust the negative pressure in the blood collection tube until blood collection is completed. This can avoid bruises on the heels of the neonate caused by excessive squeezing of the tissues around the blood collection point, and ensure a sufficient amount of blood collected. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the neonatal peripheral blood collection device of the present invention.

[0017] Figure 2 It is a top view of the base and the plastic clip of the present invention.

[0018] Figure 3 It is a cross-sectional view of the neonatal peripheral blood collection device of the present invention.

[0019] In the figure: 1-base; 2-blood collection tube; 3-first sealing plug; 4-suction tube; 5-negative pressure channel; 6-second sealing plug; 7-piston; 8-connecting tube; 9-attraction seat; 10-first magnetic block; 11-pressing slide seat; 12-second magnetic block; 13-slide rail; 14-plastic clip; 15-suction cup. DETAILED DESCRIPTION

[0020] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention. The components of the embodiments of the present invention generally described and shown in the drawings herein may be arranged and designed in a variety of different configurations.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the embodiments of the present invention, it should be noted that the indicated orientation or position relationship is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invented product is usually placed when in use, or the orientation or position relationship commonly understood by those skilled in the art, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention and the drawings in the embodiments can be understood according to specific circumstances, and the technical solutions in the embodiments of the present invention can be clearly and completely described. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] like Figures 1 to 3As shown, a neonatal peripheral blood collection device of this embodiment includes a base 1, on which a blood collection tube 2 is detachably mounted, on which a first sealing plug 3 is provided, which is airtightly connected to the inner wall of the blood collection tube 2, and on which a suction tube 4 is provided.

[0027] A negative pressure channel 5 is provided in the base 1, and the negative pressure channel 5 vertically penetrates the base 1. A second sealing plug 6 is provided at the upper end opening of the negative pressure channel 5, and the second sealing plug 6 is airtightly connected to the inner wall of the negative pressure channel 5. Both ends of the connecting tube 8 are respectively installed on the first sealing plug 3 and the second sealing plug 6, so that the blood collection tube 2 is connected to the negative pressure channel 5.

[0028] A piston 7 is provided below the second sealing plug 6, and the lower end of the piston 7 is connected to an attraction seat 9, on which a first magnetic block 10 is provided. A sliding seat 11 is slidably provided on the side of the base 1, and on the sliding seat 11 a second magnetic block 12 corresponding to the first magnetic block 10 is provided.

[0029] The connecting tube 8, the blood collection tube 2 and the suction tube 4 are all disposable. The connecting tube 8 is used to connect the blood collection tube 2 and the negative pressure channel 5. The suction tube 4 is inserted from the first sealing plug 3 at the top of the blood collection tube 2. The suction cup 15 is connected to the suction cup 4. When collecting blood, the blood collection site is disinfected, the first drop of blood is discarded, and one end of the suction cup 15 is attached to the skin. The slide 11 is pressed downward according to the amount of bleeding. The second magnetic block 12 moves downward with the slide 11. The strong magnetic force of the second magnetic block 12 and the first magnetic block 10 attracting each other drags the piston 7 downward to adjust the negative pressure in the blood collection tube 2 until the blood collection is completed. The use of the neonatal peripheral blood collection device can avoid bruises on the heels of neonates caused by excessive squeezing of the tissues around the blood collection point, while reducing the error of the test results caused by blood collection, and ensuring a sufficient amount of blood collection.

[0030] There are scale lines on the side wall of the base 1. In actual use, the scale lines can directly indicate the change in the distance of the downward movement of the slide 11, or the change in the volume of the negative pressure channel caused by the downward movement of the slide 11, which is convenient for blood collection personnel to control the amount of blood collected. The peripheral circulation of newborns is generally not as good as that of adults. By adjusting the position of the slide 11, it is ensured that a sufficient amount of blood samples are collected from newborns with different circulation conditions.

[0031] Specifically, two first magnetic blocks 10 are disposed on the attraction base 9 , and the two first magnetic blocks 10 are horizontally distributed on one side of the attraction base 9 facing the slide base 11 . Two second magnetic blocks 12 are disposed on the slide base 11 , and each second magnetic block 12 corresponds to one first magnetic block 10 .

[0032] The side of the negative pressure channel 5 facing the slide 11 is a vertical plane, and the side of the base 1 on which the slide 11 is installed is parallel to the vertical plane. That is, the side of the base 1 on which the slide 11 is installed is also a vertical plane. This can reduce the distance between the first magnetic block 10 and the second magnetic block 12, ensuring that the magnetic force between the first magnetic block 10 and the second magnetic block 12 can pull the piston 7.

[0033] Two slide rails 13 are provided on the vertical plane of the slide seat 11, and the slide seat 11 is slidably mounted on the two slide rails 13. The slide rails 13 can make the slide seat 11 slide more smoothly without deviating from the direction, further ensuring that the magnetic force can pull the piston 7.

[0034] A plastic clip 14 is provided on the side of the base 1. The plastic clip 14 can be pried apart by applying force and restored when no external force is applied to the plastic clip 14. The cross-section of the plastic clip 14 is in an "Ω" shape, which makes it easier to insert and clamp the blood collection tube 2, and the blood collection tube 2 can be easily removed after the blood collection is completed.

[0035] It can be understood that the number of first magnetic blocks 10 on the attraction seat 9 is not limited to two in the present embodiment. In other embodiments, the number of first magnetic blocks 10 can also be three or more, and it is only necessary to ensure that the same number of second magnetic blocks 12 are set for the corresponding first magnetic blocks 10.

[0036] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A peripheral blood collection device for newborns, characterized in that: The invention comprises a base (1), on which a blood collection tube (2) is detachably mounted, a first sealing plug (3) is arranged on the blood collection tube (2), a suction tube (4) is arranged on the first sealing plug (3), a negative pressure channel (5) is arranged in the base (1), a second sealing plug (6) and a piston (7) are arranged in the negative pressure channel (5), two ends of a connecting tube (8) are respectively mounted on the first sealing plug (3) and the second sealing plug (6), the lower end of the piston (7) is connected to an attraction seat (9), on which a first magnetic block (10) is arranged, a pressing slide seat (11) is slidably arranged on the side of the base (1), and a second magnetic block (12) corresponding to the first magnetic block (10) is arranged on the pressing slide seat (11); a slide rail (13) is arranged on the side of the base (1), and the pressing slide seat (11) is slidably mounted on the slide rail (13); and a suction cup (15) is connected to the suction tube (4).

2. The neonatal peripheral blood sampling device according to claim 1, characterized in that: The attraction seat (9) is provided with two first magnetic blocks (10), the two first magnetic blocks (10) are horizontally distributed on one side of the attraction seat (9) facing the pressing slide seat (11), and the pressing slide seat (11) is provided with two second magnetic blocks (12), each second magnetic block (12) corresponds to one first magnetic block (10).

3. The neonatal peripheral blood sampling device according to claim 2, characterized in that: The side of the negative pressure channel (5) facing the pressing slide seat (11) is a vertical plane, and the side of the base (1) on which the pressing slide seat (11) is mounted is parallel to the vertical plane.

4. The neonatal peripheral blood sampling device according to any one of claims 1 to 3, characterized in that: A plastic clip (14) is provided on the side of the base (1), and the cross section of the plastic clip (14) is in an "Ω" shape.

5. The neonatal peripheral blood sampling device according to any one of claims 1 to 3, characterized in that: The side wall of the base (1) is provided with scale lines.

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