Negative pressure blood collection and storage integrated device

Abstract

The embodiment of the present invention provides a negative pressure blood sampling and storage integrated device, which relates to the field of medical devices, and specifically includes a straw, a mounting tube and a blood sampling puncture assembly. A straw is mounted on one end of the mounting tube, a suction cup is mounted on the other end, and a support is arranged in the mounting tube; a presser is arranged in the middle of the suction cup, the blood sampling puncture assembly is arranged between the presser and the support, a first elastic member is arranged between the blood sampling puncture assembly and the support, a second elastic member is arranged between the blood sampling puncture assembly and the presser, a perforation is arranged in the middle of the presser, and a fixed structure is also arranged in the mounting tube. The negative pressure blood sampling and storage integrated device in the embodiment of the present application combines a straw, a suction cup and a blood sampling puncture assembly to achieve the purpose of puncture, blood sampling and storage integration, making fingertip blood sampling more convenient and quick, and can be completed by self-service. In addition, the amount of blood collected from the fingertips is increased by forming a negative pressure environment, and a sealing effect is produced by the suction cup to prevent external contamination during the blood sampling process.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and in particular to a negative pressure blood sampling and storage integrated device. Background Art

[0002] Finger-tip blood sampling has been used on a large scale in clinical practice, and has been widely used in the field of diagnosing diseases in young children and testing blood sugar in adults. At present, the main method of finger-tip blood sampling in the industry is: after pricking the finger with an elastic finger-tip blood collection needle, by pressing the fingertip, the blood droplets are scraped into the blood collection tube drop by drop, or adsorbed into a capillary glass tube, or pressed onto a special blood collection paper, or directly dropped onto a test strip or device.

[0003] The above fingertip blood collection method has the following main disadvantages:

[0004] 1. The amount of blood collected is small, so it is mainly used for tests that require very little blood, which greatly limits the application scope of this convenient blood collection method;

[0005] 2. Blood collection is directly exposed to the air, which is prone to environmental pollution;

[0006] 3. Blood collection is inconvenient, and the nurse has to squeeze the fingers to draw blood drop by drop, and the collection device is also completely manual;

[0007] 4. Except for the self-testing items of trace samples, the sample collection of other testing items depends on professionally trained personnel.

[0008] In view of the above situation, this application is hereby filed. Summary of the invention

[0009] The purpose of the present invention includes, for example, providing an integrated negative pressure blood collection and storage device, which can overcome the inconvenience caused by the existing fingertip blood collection method that relies on medical personnel to manually squeeze and collect blood.

[0010] The embodiments of the present invention can be implemented as follows:

[0011] In a first aspect, the present invention provides a negative pressure blood collection and storage integrated device, comprising a suction tube, a mounting tube and a blood collection puncture assembly,

[0012] A suction tube is installed at one end of the installation tube, and a suction cup is installed at the other end, and a support member is arranged inside the installation tube;

[0013] A presser that can be pressed and retracted into the mounting tube is arranged in the middle of the suction cup, the blood sampling puncture assembly is arranged between the presser and the support, a first elastic member is arranged between the blood sampling puncture assembly and the support, a second elastic member is arranged between the blood sampling puncture assembly and the presser, a through hole for the puncture needle of the blood sampling puncture assembly to pass through is arranged in the middle of the presser, and a fixing structure that can fix the blood sampling puncture assembly when the first elastic member is compressed is also arranged in the mounting tube.

[0014] In an optional embodiment, the blood sampling puncture assembly includes a blood sampling puncture assembly body and a puncture needle, the puncture needle is arranged at one end of the blood sampling puncture assembly body close to the suction cup, and the fixing structure includes a buckle arranged on the blood sampling puncture assembly body and a slot arranged on the inner wall of the mounting tube.

[0015] In an optional embodiment, the presser includes a guide cylinder arranged around the blood sampling puncture assembly and a pressing surface fixed to an end of the guide cylinder away from the suction tube, and the perforation is arranged on the pressing surface.

[0016] In an optional embodiment, a slide groove is provided along the axial direction of the guide cylinder and penetrates the cylinder wall of the guide cylinder. The slide groove is provided with an opening at one end close to the straw, and the buckle can pass through the slide groove and slide into the clamping slot along the slide groove.

[0017] In an optional embodiment, a gradient portion is provided at one end of the slide groove close to the opening, and a width of the gradient portion gradually increases in a direction close to the opening.

[0018] In an optional embodiment, the mounting tube includes a small diameter portion for connecting to the suction cup, a large diameter portion for connecting to the suction tube, and a reducing portion for connecting the small diameter portion and the large diameter portion, and the outer wall of the guide tube is provided with a limiting portion that can abut against the inner wall of the reducing portion to prevent the guide tube from detaching from the side where the suction cup is provided.

[0019] In an optional embodiment, the small diameter portion is provided with a first annular groove for engaging with the suction cup;

[0020] And / or, a second annular groove for engaging with the straw is provided on the large diameter portion.

[0021] In an optional embodiment, the support member is provided with a through hole for blood to pass through.

[0022] In an optional embodiment, the straw is made of silicone or rubber.

[0023] In an optional embodiment, the straw contains an anticoagulant or a coagulant.

[0024] The beneficial effects of the embodiments of the present invention include, for example:

[0025] The negative pressure blood collection and storage integrated device in the embodiment of the present application combines a straw, a suction cup and a blood collection puncture assembly to achieve the purpose of integrating puncture, blood collection and storage, making fingertip blood collection more convenient and quick, and can be completed by self-service. In addition, the negative pressure environment is formed to increase the amount of blood collected from the fingertips, and the suction cup produces a sealing effect to prevent external contamination during the blood collection process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0027] Figure 1 This is a structural diagram of the negative pressure blood sampling and storage integrated device in the embodiment of the present application;

[0028] Figure 2 It is a cross-sectional view of the negative pressure blood sampling and storage integrated device in the embodiment of the present application;

[0029] Figure 3 It is a schematic diagram of the structure of the installation cylinder in the embodiment of the present application.

[0030] Icons: 100- straw; 200- mounting tube; 210- small diameter portion; 211- first annular groove; 220- large diameter portion; 221- second annular groove; 230- reducing portion; 300- blood sampling puncture assembly; 310- puncture needle; 320- buckle; 400- support member; 500- presser; 510- guide tube; 520- pressing surface; 530- perforation; 540- slide groove; 541- gradual portion; 600- first elastic member; 700- second elastic member; 800- suction cup. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0032] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] 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.

[0034] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the invention is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do 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.

[0035] In addition, the terms “first”, “second”, etc., if used, are merely used to distinguish between the descriptions and should not be understood as indicating or implying relative importance.

[0036] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention may be combined with each other.

[0037] Please refer to Figure 1-3 This embodiment provides a negative pressure blood collection and storage integrated device, including a suction tube 100, a mounting cylinder 200 and a blood collection puncture assembly 300.

[0038] The installation tube 200 has a suction tube 100 installed at one end and a suction cup 800 installed at the other end. The installation tube 200 has a support member 400 disposed inside.

[0039] A presser 500 is provided in the middle of the suction cup 800 and can be retracted into the installation tube 200 under pressure. The blood sampling puncture assembly 300 is arranged between the presser 500 and the support member 400. A first elastic member 600 is provided between the blood sampling puncture assembly 300 and the support member 400. A second elastic member 700 is provided between the blood sampling puncture assembly 300 and the presser 500. A through hole 530 for the puncture needle 310 of the blood sampling puncture assembly 300 to pass through is provided in the middle of the presser 500. A fixing structure is also provided in the installation tube 200, which can fix the blood sampling puncture assembly 300 when the first elastic member 600 is compressed.

[0040] When the negative pressure blood collection and storage integrated device in the embodiment of the present application is used, the open end of the suction cup 800 is aligned with the finger of the patient whose blood is to be collected and pressed downward. While pressing downward, on the one hand, the suction cup 800 is adsorbed on the finger to provide a slightly negative pressure environment, while isolating the finger from the external environment to prevent the blood collection process from being polluted by the environment; on the other hand, the presser 500 is pressed to move toward the direction close to the straw 100. At this time, the first elastic member 600 and the second elastic member 700 are both compressed. As the pressing pressure increases, the puncture needle 310 gradually moves toward the direction close to the straw 100 and gradually penetrates the perforation 530 to puncture the skin. When the puncture needle 310 extends into the skin to a certain depth, the fixing structure in the mounting tube 200 takes effect to fix the blood collection puncture assembly 300, and the blood enters the straw 100 through the suction cup 800 and the mounting tube 200 to achieve blood collection. After the blood collection is completed, the pressure on the presser 500 is removed, and the blood collection operation is completed. At this time, since the blood collection puncture assembly 300 is fixed by the fixed structure, it will not move away from the straw 100 again under the action of the first elastic member 600, thereby preventing the puncture needle 310 from causing secondary damage to the skin.

[0041] The negative pressure blood collection and storage integrated device in the embodiment of the present application includes a straw 100, which is used to collect and store the collected blood. After the collected blood is collected in the straw 100, it can be directly sent for pretreatment or detection, or it can be equipped with an upper cover. After the other components on the straw 100 are removed, the cover is sealed to avoid contamination or loss of blood during the waiting process. It should be noted that in some cases, the blood collection puncture assembly in the present application can also be removed, and the straw, mounting tube and suction cup can be assembled for use. At this time, other puncture structures can be used to puncture the blood collection site first, and then the suction cup can be covered on the punctured site to suck out the blood through negative pressure and store it in the straw.

[0042] The mounting tube 200 is used to connect the suction cup 800 and the suction tube 100 , and the mounting tube 200 can protect the inner components thereof, such as the blood sampling puncture component 300 , the first elastic member 600 and the second elastic member 700 .

[0043] The suction cup 800 is used to contact the user's skin. When the suction cup 800 is pressed down, it is adsorbed on the user's skin and provides a certain negative pressure for the blood collection site, which is conducive to blood flow. In some embodiments, the silicone suction cup 800 can be configured with multiple different sizes to adapt to fingers of different sizes or other parts of the body, such as adapting to the heels of infants for heel blood collection; in some embodiments, the material of the suction cup 800 can be silicone, which has sufficient elasticity to ensure the sealing of the connection between the mounting tube 200 and the suction cup 800. In some embodiments, a sealing cover can also be provided on the suction cup 800, and the sealing cover can be covered when waiting for detection to prevent the sample from being contaminated.

[0044] The puncture needle 310 in the blood sampling puncture assembly 300 can puncture the skin to allow blood to flow out. The second elastic member 700 is provided to prevent the puncture needle 310 from piercing too deeply into the skin and causing serious damage to the patient. The first elastic member 600 can play a role in pushing the blood sampling puncture assembly 300 to push the puncture needle 310 out of the perforation 530. The first elastic member 600 and the second elastic member 700 can be springs.

[0045] The negative pressure blood collection and storage integrated device in the embodiment of the present application combines a straw, a suction cup and a blood collection puncture assembly to achieve the purpose of integrating puncture, blood collection and storage, making fingertip blood collection more convenient and quick, and can be completed by self-service. In addition, the negative pressure environment is formed to increase the amount of blood collected from the fingertips, and the suction cup produces a sealing effect to prevent external contamination during the blood collection process.

[0046] In an optional embodiment, the blood sampling puncture assembly 300 includes a blood sampling puncture assembly 300 body and a puncture needle 310, the puncture needle 310 is arranged at one end of the blood sampling puncture assembly 300 body close to the suction cup 800, and the fixing structure includes a buckle 320 arranged on the blood sampling puncture assembly body and a card groove arranged on the inner wall of the mounting cylinder 200.

[0047] The puncture needle 310 can be fixed by the cooperation of the card slot and the buckle 320, wherein the specific structure of the buckle 320 can be a spring, one end of which is fixed to the side of the blood sampling puncture assembly body, and the other end is inclined in the direction of the suction cup 800. In this way, when the blood sampling puncture assembly 300 slides toward the direction close to the suction tube 100, no jamming will occur. When the movable end of the spring enters the card slot, it can be firmly stuck in the card slot. In this way, it can be avoided that a small pressure is applied to press the presser 500, and the suction cup 800 has not been completely adsorbed on the finger. The blood sampling puncture assembly 300 cannot move in the usual direction due to jamming, resulting in the puncture needle 310 having penetrated deeper into the skin, that is, it is impossible to create a negative pressure environment or excessive damage to the finger.

[0048] It should be noted that, in the present embodiment, a connecting piece can be used to connect the main body of the blood sampling puncture assembly 300 and the first elastic member 600 and the second elastic member 700. In some embodiments, if the first elastic member 600 and the second elastic member 700 are both springs, connecting columns can be provided at the connection points between the two ends of the blood sampling puncture assembly 300 and the springs. One end of the spring is sleeved on the connecting column. A protrusion can be provided on the surface of the connecting column. The protrusion serves to limit the spring and reduce the risk of the spring falling off.

[0049] In an optional embodiment, the presser 500 includes a guide cylinder 510 arranged around the blood sampling puncture assembly 300 and a pressing surface 520 fixed to the end of the guide cylinder 510 away from the straw 100 , and the perforation 530 is arranged on the pressing surface 520 .

[0050] The guide cylinder 510 and the pressing surface 520 in this embodiment are coaxially arranged, and the two can be fixedly connected or integrally formed. The pressing surface 520 serves as an end surface of the guide cylinder 510, and the guide cylinder 510 can provide support for the pressing surface 520 to prevent the pressing surface 520 from tilting or getting stuck due to uneven force, so that the pressing surface 520 cannot move toward the direction close to the straw 100, and the puncture needle 310 cannot pass through the perforation 530 to puncture the skin.

[0051] In an optional embodiment, a slide groove 540 is provided along the axial direction of the guide cylinder 510 and passes through the cylinder wall of the guide cylinder 510. The slide groove 540 is provided with an opening at one end close to the straw 100. The buckle 320 can pass through the slide groove 540 and slide into the clamping groove along the slide groove 540.

[0052] The slide groove 540 can prevent the guide cylinder 510 from interfering with the fixing structure of the blood sampling puncture assembly 300, and can also play a guiding role to prevent the blood sampling puncture assembly 300 from twisting in a direction parallel to the pressing surface 520. In some embodiments, there can be more than two fixing structures, each of which is correspondingly provided with a slide groove 540, and the two or more slide grooves 540 can be evenly distributed along the circumference of the guide cylinder 510.

[0053] In an optional embodiment, a gradient portion 541 is provided at one end of the slide groove 540 close to the opening, and the width of the gradient portion 541 gradually increases along a direction close to the opening.

[0054] The setting of the gradient portion 541 enables the buckle 320 to quickly slide into the slide groove 540, which is beneficial to improving the assembly efficiency of the blood collection device.

[0055] In an optional embodiment, the mounting tube 200 includes a small diameter portion 210 for connecting to the suction cup 800, a large diameter portion 220 for connecting to the suction tube 100, and a reducing portion 230 for connecting the small diameter portion 210 and the large diameter portion 220, and the outer wall of the guide tube 510 is provided with a limiting portion that can abut against the inner wall of the reducing portion 230 to prevent the guide tube 510 from detaching from the side where the suction cup 800 is provided.

[0056] The setting of the diameter reducing portion 230 allows the inner diameters of the suction cup 800 and the straw 100 to be different, so that the size of the suction cup 800 can be adapted to the size of the finger, and the inner diameter of the straw 100 can be slightly larger, so as to generate a greater negative pressure and accommodate more blood; on the other hand, the diameter reducing portion 230 can cooperate with the limiting portion to prevent the guide tube 510 from falling off. In some embodiments, the limiting portion can be a convex ring or two or more protrusions protruding from the outer surface of the guide tube 510 and arranged along the circumference of the guide tube 510, and the convex ring or protrusion abuts against the diameter reducing portion 230, thereby realizing the limiting of the guide tube 510.

[0057] In an optional embodiment, a first annular groove 211 for engaging with the suction cup 800 is provided on the small diameter portion 210 . Specifically, the small diameter end of the suction cup 800 can extend into the first annular groove 211 to achieve a sealed connection between the suction cup 800 and the mounting tube 200 .

[0058] In an optional embodiment, the large diameter portion 220 is provided with a second annular groove 221 for engaging with the straw 100 . Specifically, the open end of the straw 100 can extend into the second annular groove 221 to achieve a sealed connection between the straw 100 and the mounting tube 200 .

[0059] In an optional embodiment, the support member 400 is provided with a through hole for blood to pass through.

[0060] On the one hand, the through hole can serve as a channel for collecting blood so that blood can enter the straw 100; on the other hand, it can also serve as a channel for transmitting negative pressure so that the negative pressure environment in the straw 100 is transmitted to the mounting tube 200, which is conducive to strengthening the negative pressure environment generated by the suction cup 800.

[0061] In an optional embodiment, the straw 100 is made of silicone or rubber.

[0062] Silicone or rubber is elastic and tends to recover its shape when squeezed. In some cases, if a larger amount of blood needs to be collected or if the blood outflow speed is desired to be accelerated, the straw 100 can be squeezed first and then the suction cup 800 can be attached to the skin. When the straw 100 recovers its shape, it can increase the suction force, which is conducive to the rapid outflow of blood and can ensure the sealing of the connection between the mounting tube 200 and the straw 100.

[0063] In an optional embodiment, the straw 100 is filled with an anticoagulant or a coagulant so as to be suitable for different test items of serum and plasma.

[0064] In some embodiments, the negative pressure blood collection and storage integrated device comprises:

[0065] Straw, 60 mm long and 20 mm in diameter;

[0066] The mounting tube is 35 mm long, 9 mm in diameter at the small diameter portion, 2 mm wide and 1 mm deep for the first annular groove, 18 mm in diameter at the large diameter portion, and 3 mm wide and 1 mm deep for the second annular groove;

[0067] Blood sampling puncture assembly, puncture needle 3mm, blood sampling puncture assembly body 18mm (both ends partially extend into the first elastic member and the second elastic member);

[0068] The first elastic member is a spring, 16 mm long; the second elastic member is a spring, 8 mm long;

[0069] The guide tube is 25mm long and extends 5mm beyond the mounting tube when not under pressure; the pressing surface diameter is 7mm and the perforation diameter is 5mm;

[0070] Suction cup, large diameter end diameter 20mm, small diameter end diameter 7mm.

[0071] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A negative pressure blood sampling and storage integrated device, characterized in that: It includes a suction tube, a mounting tube and a blood collection puncture assembly. A suction tube is installed at one end of the installation tube, and a suction cup is installed at the other end, and a support member is arranged inside the installation tube; A presser that can be pressed and retracted into the mounting tube is provided in the middle of the suction cup, the blood sampling puncture assembly is provided between the presser and the support, a first elastic member is provided between the blood sampling puncture assembly and the support, a second elastic member is provided between the blood sampling puncture assembly and the presser, a through hole for the puncture needle of the blood sampling puncture assembly to pass through is provided in the middle of the presser, and a fixing structure that can fix the blood sampling puncture assembly when the first elastic member is compressed is also provided in the mounting tube; The blood sampling puncture assembly comprises a blood sampling puncture assembly body and a puncture needle, wherein the puncture needle is arranged at one end of the blood sampling puncture assembly body close to the suction cup, and the fixing structure comprises a buckle arranged on the blood sampling puncture assembly body and a card slot arranged on the inner wall of the mounting tube; The presser comprises a guide cylinder arranged around the blood sampling puncture assembly and a pressing surface fixed to the end of the guide cylinder away from the suction tube, and the perforation is arranged on the pressing surface; A slide groove penetrating the guide cylinder wall is arranged along the axial direction of the guide cylinder, an opening is arranged at one end of the slide groove close to the straw, and the buckle can pass through the slide groove and slide into the clamping slot along the slide groove.

2. The negative pressure blood sampling and storage integrated device according to claim 1, characterized in that: A gradient portion is disposed at one end of the slide groove close to the opening, and a width of the gradient portion gradually increases along a direction close to the opening.

3. The negative pressure blood sampling and storage integrated device according to claim 1, characterized in that: The mounting tube includes a small diameter portion for connecting the suction cup, a large diameter portion for connecting the suction tube, and a reducing portion for connecting the small diameter portion and the large diameter portion. The outer wall of the guide tube is provided with a limiting portion that can abut against the inner wall of the reducing portion to prevent the guide tube from detaching from the side where the suction cup is provided.

4. The negative pressure blood sampling and storage integrated device according to claim 3, characterized in that: The small diameter portion is provided with a first annular groove for engaging with the suction cup; And / or, a second annular groove for engaging with the straw is provided on the large diameter portion.

5. The negative pressure blood sampling and storage integrated device according to claim 1, characterized in that: The support member is provided with a through hole for blood to pass through.

6. The negative pressure blood sampling and storage integrated device according to claim 1, characterized in that: The material of the straw is silicone or rubber.

7. The negative pressure blood sampling and storage integrated device according to claim 1, characterized in that: The straw is filled with an anticoagulant or a coagulant.

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