Blood collection device

Abstract

The invention discloses a blood collection device which comprises a collection device body and a cut-off device, a container clamping groove matched with a sampling container is formed in the collection device body, a movable sliding block is further arranged on the collection device body, and the movable sliding block can axially slide in a reciprocating mode along the container clamping groove. A first correlation sensor and a second correlation sensor which are matched with each other are arranged on the two sides of the movable sliding block respectively, and the first correlation sensor and the second correlation sensor are arranged on the two sides of the container clamping groove respectively. Whether the liquid level of blood in the negative pressure blood sampler reaches the standard or not can be monitored through the correlation sensors on the two sides, when the liquid level reaches the preset height, the correlation sensors can receive information at the first time and control the cut-off device to cut off the blood drawing pipeline connected with the negative pressure blood sampler, and therefore the effect of quantitative blood drawing is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical instruments, in particular to the technical field of blood collection devices. Background Art

[0002] Blood collection is a process that involves professional medical staff or personnel who have been specially trained in blood collection techniques, through veins or arteries, to draw blood samples for testing or related needs. In this process, adequate preparation before blood collection is crucial to improve work efficiency, ensure the quality of blood samples, protect the safety of blood donors, and ensure the smooth operation of blood collection. Blood collectors need to be proficient in blood collection techniques because their skill level directly affects the quality of blood and the health of blood donors. During the blood collection process, medical staff will safely place the collected blood in a test tube for subsequent blood analysis or testing.

[0003] Most of the existing blood collection tubes are negative pressure sampling containers, and the internal pressure of the container is negative. Blood can be automatically drawn by the internal negative pressure, and the drawing is convenient. For example, a negative pressure blood collector proposed in the Chinese invention patent with the publication number CN201500127U includes a blood collection tube and a blood collection needle set. The blood collection needle set includes a blood collection needle, a hose and a cover. The blood collection needle is connected to the cover through the hose. One end of the blood collection tube is closed, and the other end is designed with a plug interface. The plug interface and the cover are plugged together. The blood collection tube is made of elastic transparent plastic material. When in use, the puncture needle in the blood collection needle set is inserted into the rubber stopper, and then the blood collection tube body is pinched and the blood collection needle is inserted into the vein. In this way, the blood flows into the blood collection tube under the negative pressure of the blood collection tube.

[0004] A negative pressure vacuum blood collection tube proposed in publication number CN215458050U belongs to the field of vacuum blood collection tubes. The negative pressure vacuum blood collection tube comprises a blood collection tube body. The upper port of the blood collection tube body is provided with a rubber plug for isolation. The top of the blood collection tube body is located above the rubber plug and is also sleeved with a tube cap. An anti-slip ring is sleeved on the blood collection tube body below the tube cap. The anti-slip ring is obliquely sleeved on the blood collection tube body. A fixed block fixedly connected to the bottom edge of the tube cap is provided at the high point of the anti-slip ring. A slideway is vertically opened on the side of the blood collection tube body opposite to the fixed block. A slider is also provided corresponding to the slideway at the low point of the anti-slip ring. The slider is slidably arranged inside the slideway. The width of the high point of the anti-slip ring is smaller than the width of the low point of the anti-slip ring.

[0005] However, the problem with the above-mentioned negative pressure sampling container is that it relies on internal negative pressure to draw blood, and the amount of blood drawn is completely controlled by the medical staff's visual judgment and manual pulling out of the blood drawing line. The control of the blood drawing amount is not precise enough, and it is easy to draw too much or too little, affecting the detection, causing a waste of patient blood, and affecting the patient's recovery. Summary of the invention

[0006] The purpose of the present invention is to solve the problems in the prior art and to provide a blood collection device that can more accurately control the amount of blood drawn.

[0007] To achieve the above-mentioned purpose, the present invention proposes a blood collection device, including a collection device body and a cut-off device, wherein the collection device body is provided with a container slot adapted to the sampling container, and the collection device body is also provided with a movable slider, and the movable slider can slide back and forth along the axial direction of the container slot, and the two sides of the movable slider are respectively provided with a first matching sensor and a second matching sensor that cooperate with each other, the first matching sensor and the second matching sensor are respectively provided on the two sides of the container slot, and the first matching sensor is inductively matched with the second matching sensor after passing through the container slot; The intercepting device is provided with a pipeline clamping groove adapted to the blood drawing blood circuit, and the intercepting device is also provided with a pipeline compression device arranged toward the pipeline clamping groove, and the pipeline compression device is used to compress the blood drawing blood circuit in the pipeline clamping groove to cut off the blood drawing blood circuit or to release the blood drawing blood circuit to allow the blood drawing blood circuit to flow; It also includes a control system, which is electrically connected to the first pair of radiation sensors, the second pair of radiation sensors, and the pipeline compression device. When an object blocks signal transmission between the first pair of radiation sensors and the second pair of radiation sensors, the control system controls the pipeline compression device to compress the blood drawing circuit in the pipeline slot to cut off the blood drawing circuit.

[0008] Preferably, a pressure sensor for interfering with the bottom of the sampling container is provided at the bottom of the container slot, and the pressure sensor is connected to the control system for data communication.

[0009] Preferably, the collection device body is provided with an indicating mechanism corresponding to the pressure sensor.

[0010] Preferably, the pipeline compression device comprises a pressure block arranged toward the pipeline slot and an electric driver for driving the pressure block to move toward or away from the pipeline slot.

[0011] Preferably, the collecting device body is further provided with a lifting mechanism for driving the movable slider to slide back and forth axially along the container slot, and the control system is control-connected to the lifting mechanism.

[0012] Preferably, the lifting mechanism comprises at least two screw rods, a main drive motor, and a plurality of transmission gears; the collection device body is provided with at least two screw rods arranged along its axial direction; the movable slider is connected to the screw rods through a screw nut; a main drive motor is provided at one end of the collection device body; and the rotating shaft of the main drive motor is synchronously connected to each of the screw rods through a plurality of transmission gears.

[0013] Preferably, the lifting mechanism further comprises a rotary encoder synchronously connected to the rotating shaft of the main driving motor, and the rotary encoder is connected to the control system for data communication.

[0014] Preferably, the movable slider is provided with a sleeve cavity adapted to the collection device body, and the movable slider is sleeved on the outer wall of the collection device body through the sleeve cavity. Open grooves arranged along the axial direction are provided on both sides of the collection device body, and the open grooves are connected to the container card slot. A positioning slider is provided inside the sleeve cavity of the movable slider, which is respectively slidably matched with the open grooves on both sides.

[0015] Preferably, the first radiation sensor and the second radiation sensor are respectively arranged at the opening grooves on both sides.

[0016] Preferably, the outer wall of the collection device body is provided with a scale that cooperates with the movable slider.

[0017] The beneficial effects of a blood collection device of the present invention: the present invention can cooperate with an existing negative pressure blood sampler by arranging a container slot on the collection device body, fix the negative pressure blood sampler inside, and then monitor whether the blood liquid level inside the negative pressure blood sampler meets the standard through the corresponding sensors on both sides. When the liquid level reaches a predetermined height, the corresponding sensor can receive the information in the first time and control the interception device to intercept the blood drawing circuit connected to the negative pressure blood sampler, thereby achieving the effect of quantitative blood drawing. The position of the corresponding sensor can be adjusted by a movable slider, thereby adjusting the predetermined blood drawing amount to meet various blood drawing needs. The collection device body and the interception device can be reused many times, with low cost and convenient use, and can be perfectly adapted to the existing negative pressure blood sampler.

[0018] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the main structure of a blood collection device of the present invention.

[0020] Figure 2 It is a schematic diagram of the main structure of the acquisition device body of the present invention.

[0021] Figure 3 It is a schematic diagram of the side structure of the collection device body of the present invention.

[0022] Figure 4 It is a schematic diagram of the rear view structure of the collection device body of the present invention.

[0023] Figure 5 It is a schematic diagram of the top view of the structure of the collection device body of the present invention.

[0024] Figure 6 It is a schematic diagram of the structure of the movable slider viewed from above.

[0025] Figure 7 It is a schematic diagram of the structure of the intercepting device.

[0026] Figure 8 It is a structural schematic diagram when the intercepting device compresses the blood drawing line in the line clamping groove to intercept the blood drawing line.

[0027] in: 1-collection device body; 2-interceptor device; 3-screw rod; 4-main drive motor; 11-container slot; 12-movable slider; 13-first counter-radiation sensor; 14-second counter-radiation sensor; 15-pressure sensor; 16-opening slot; 17-scale; 21-pipeline slot; 22-pressure block; 23-electric driver; 121-slider. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention is further described in detail below through the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the scope of the present invention. In addition, in the following description, the description of known structures and technologies is omitted to avoid unnecessary confusion of the concept of the present invention.

[0029] In the description of the present invention, it should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0030] In the description of the present invention, it should be noted that the terms "center", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invention product is usually placed when in use, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used to distinguish descriptions, and cannot be understood as indicating or implying relative importance. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined. "Several" means one or more, unless otherwise clearly and specifically defined.

[0031] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" 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 communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Embodiment 1

[0032] See also Figure 1-Figure 6The present invention provides a blood collection device, comprising a collection device body 1 and a flow interception device 2. The collection device body 1 is provided with a container slot 11 adapted to a sampling container. The sampling container is an existing conventional negative pressure sampling container. The sampling container is detachably arranged in the container slot 11, so that the collection device body 1 can be reused, saving costs. The collection device body 1 is also provided with a movable slider 12, which can slide back and forth along the axial direction of the container slot 11. The two sides of the movable slider 12 are respectively provided with a first matching sensor 13 and a second matching sensor 14 that cooperate with each other. The first matching sensor 13 and the second matching sensor 14 are respectively arranged on both sides of the container slot 11, and the first matching sensor 13 passes through the container slot 11 and is inductively matched with the second matching sensor 14. The first pairing sensor 13 and the second pairing sensor 14 are respectively a transmitting end and a receiving end. When an object passes through and cuts off the light, a signal is output. The first pairing sensor 13 and the second pairing sensor 14 cooperate to monitor the height of the blood level inside the sampling container. When the blood level inside the sampling container reaches the position of the first pairing sensor 13 and the second pairing sensor 14, the light is blocked, thereby outputting a signal.

[0033] See also Figure 7 , Figure 8 The intercepting device 2 is provided with a pipeline clamping slot 21 adapted to the blood drawing circuit. The intercepting device 2 is also provided with a pipeline compressing device arranged toward the pipeline clamping slot 21. The pipeline compressing device is used to compress the blood drawing circuit in the pipeline clamping slot 21 to cut off the blood drawing circuit or loosen the blood drawing circuit to allow the blood drawing circuit to flow. The intercepting device 2 also includes a control system. The control system is electrically connected to the first matching sensor 13, the second matching sensor 14, and the pipeline compressing device. When there is an object blocking signal transmission between the first matching sensor 13 and the second matching sensor 14, the control system controls the pipeline compressing device to compress the blood drawing circuit in the pipeline clamping slot 21 to cut off the blood drawing circuit; otherwise, the pipeline compressing device is retracted to keep the blood drawing circuit flowing. In this embodiment, by setting a container slot 11 on the collection device body 1, it can cooperate with the existing negative pressure blood sampler to fix the negative pressure blood sampler inside, and then the cross-shooting sensors on both sides can monitor whether the blood level inside the negative pressure blood sampler meets the standard. When the liquid level reaches a predetermined height, the cross-shooting sensor can receive the information in the first time and control the interception device 2 to intercept the blood drawing circuit connected to the negative pressure blood sampler, thereby achieving the effect of quantitative blood drawing. The position of the cross-shooting sensor can be adjusted by the movable slider 12, thereby adjusting the predetermined blood drawing volume to meet various blood drawing needs. The collection device body 1 and the interception device 2 can be reused many times, with low cost and convenience, and can be perfectly adapted to the existing negative pressure blood sampler.

[0034] Preferably, the collection device body 1 is powered by a built-in battery, and the interception device 2 can communicate with the collection device body 1 either by wired connection or by wireless communication. When the interception device 2 and the collection device body 1 are connected by wire, there is no need to set up a separate power supply inside the interception device 2; when the interception device 2 and the collection device body 1 are connected by wireless, a separate power supply is required inside the interception device 2. Embodiment 2

[0035] See also Figure 1 , Figure 2 Based on the first embodiment, refer to Figure 1 The container slot 11 has one end that penetrates the collection device body 1 and the other end that is closed. A pressure sensor 15 for contacting and cooperating with the bottom of the sampling container is provided at the bottom of the container slot 11. The pressure sensor 15 is connected to the control system for data communication. The collection device body 1 is provided with an indication mechanism corresponding to the pressure sensor 15. By providing the pressure sensor 15, it is possible to monitor whether the negative pressure blood sampler is installed in place, and the positioning is more accurate, thereby improving the accuracy.

[0036] Preferably, the indicating mechanism is an indicator light. By observing whether the indicator light is on or the color of the indicator light, it is possible to distinguish whether the negative pressure blood sampler is installed in place, thereby improving accuracy. In another optional embodiment, the indicating mechanism can also be a sound indicator or a display screen light.

[0037] See also Figure 7 , Figure 8 The pipeline compression device includes a pressure block 22 disposed toward the pipeline slot 21 and an electric driver 23 for driving the pressure block 22 to move toward or away from the pipeline slot 21. The electric driver 23 is a mechanism such as an electric push rod. When the electric driver 23 drives the pressure block 22 to move toward the pipeline slot 21, the blood drawing line in the pipeline slot 21 can be compressed, thereby cutting off the flow of liquid in the blood drawing line. The control is convenient and the device can be installed without intruding into the blood drawing line.

[0038] See also Figure 2 The outer wall of the collecting device body 1 is provided with a scale 17 that matches the movable slider 12. The position of the movable slider 12 can be adjusted according to the scale 17. Embodiment 3

[0039] See also Figure 2-Figure 6On the basis of the first or second embodiment, the collecting device body 1 is further provided with a lifting mechanism for driving the movable slider 12 to slide back and forth along the axial direction of the container slot 11, and the control system is connected to the lifting mechanism; the lifting mechanism includes at least two screw rods 3, a main drive motor 4, and a plurality of transmission gears. The collecting device body 1 is provided with at least two screw rods 3 arranged along its axial direction, and the movable slider 12 is connected to the screw rod 3 through a screw nut. The collecting device body 1 is provided with a main drive motor 4 at one end, and the rotating shaft of the main drive motor 4 is synchronously connected to each of the screw rods 3 through a plurality of transmission gears. In this embodiment, the lifting mechanism can be driven by the main drive motor 4, and there is no need to manually adjust the movable slider 12, which is more labor-saving and convenient to adjust, with higher precision and better controllability.

[0040] Preferably, the lifting mechanism further comprises a rotary encoder synchronously connected to the rotating shaft of the main drive motor 4, and the rotary encoder is connected to the control system for data communication. The rotary encoder accurately obtains the number of rotations of the rotating shaft of the main drive motor 4, thereby calculating the corresponding movement amount of the movable slider 12, and realizing precise control and precise positioning.

[0041] Preferably, the acquisition device body 1 is also provided with a control panel and / or a plurality of control buttons electrically connected to the control system, which can be used for controlling operations, feedback information, etc.

[0042] See also Figure 5 , Figure 6 The movable slider 12 is provided with a sleeve cavity adapted to the collection device body 1, and the movable slider 12 is sleeved on the outer wall of the collection device body 1 through the sleeve cavity. The two sides of the collection device body 1 are provided with open grooves 16 arranged along the axial direction thereof, and the open grooves 16 are communicated with the container clamping slot 11. The sleeve cavity of the movable slider 12 is provided with positioning sliders 121 respectively slidably matched with the open grooves 16 on both sides. The positioning slider 121 cooperates with the open grooves 16 to limit the moving direction and moving position of the movable slider 12, so as to prevent the movable slider 12 from deviating.

[0043] Preferably, the first beam sensor 13 and the second beam sensor 14 are respectively disposed at the opening slots 16 on both sides.

[0044] Preferably, a plurality of blocks for interfering with the outer wall of the blood sampling container are provided on both sides of the container slot 11 to limit the position of the blood sampling container and to place the blood sampling container out of the container slot 11 .

[0045] Working process of the present invention: During operation of a blood collection device of the present invention, a negative pressure blood sampler is installed in a container slot 11, a blood drawing line is clamped in a line slot 21, and a collection device body 1 is connected to a cut-off device 2. The position of a movable slider 12 is adjusted according to requirements to fix it at a position corresponding to the required blood drawing amount. After the needle end of the blood drawing line is inserted into a human vein, the output end of the blood drawing line is inserted into the negative pressure blood sampler. Blood enters the negative pressure blood sampler through the blood drawing line, and the liquid level inside the negative pressure blood sampler gradually increases. The opposing sensors on both sides can monitor whether the blood liquid level inside the negative pressure blood sampler meets the standard. When the liquid level reaches a predetermined height, the opposing sensors can receive the information in the first time and control the cut-off device 2 to cut off the blood drawing line connected to the negative pressure blood sampler, thereby achieving the effect of quantitative blood drawing.

[0046] The standard parts used in this application document can all be purchased from the market, and the specific connection methods of each part adopt mature conventional means such as bolts, rivets, welding, etc. in the prior art. The electric slide rail slide, cylinder, welding machine, electric telescopic rod and internal components of the controller all adopt conventional models in the prior art, and their internal structures belong to the prior art structure. Workers can complete normal operation of them according to the existing technical manual. In addition, the circuit connection adopts the conventional connection method in the prior art, and no specific description is given here.

[0047] It should be noted that, although the above embodiments have been described in this article, the scope of patent protection of the present invention is not limited thereby. Therefore, based on the innovative concept of the present invention, changes and modifications made to the embodiments described herein, or equivalent structures or equivalent process changes made using the contents of the present specification and drawings, directly or indirectly applying the above technical solutions to other related technical fields are all included in the scope of protection of the patent of the present invention.

Claims

1. A blood collection device, comprising a blood collection device body (1) and a flow interception device (2), characterized in that: The collection device body (1) is provided with a container slot (11) adapted to the sampling container, and the collection device body (1) is also provided with a movable slider (12), the movable slider (12) can slide back and forth axially along the container slot (11), and the two sides of the movable slider (12) are respectively provided with a first matching sensor (13) and a second matching sensor (14) that cooperate with each other, the first matching sensor (13) and the second matching sensor (14) are respectively arranged on the two sides of the container slot (11), and the first matching sensor (13) is inductively matched with the second matching sensor (14) after passing through the container slot (11); The intercepting device (2) is provided with a pipeline clamping groove (21) adapted to the blood drawing blood circuit, and the intercepting device (2) is also provided with a pipeline compression device arranged toward the pipeline clamping groove (21), the pipeline compression device being used to compress the blood drawing blood circuit in the pipeline clamping groove (21) so as to intercept the blood drawing blood circuit or to release the blood drawing blood circuit so as to allow the blood drawing blood circuit to flow; It also includes a control system, the control system being electrically connected to the first counter-radiation sensor (13), the second counter-radiation sensor (14), and the pipeline compression device, and when an object blocks signal transmission between the first counter-radiation sensor (13) and the second counter-radiation sensor (14), the control system controls the pipeline compression device to compress the blood drawing circuit in the circuit clamping slot (21) so as to cut off the blood drawing circuit.

2. A blood collection device as claimed in claim 1, characterized in that: A pressure sensor (15) for contacting and cooperating with the bottom of the sampling container is provided at the bottom of the container slot (11), and the pressure sensor (15) is connected to the control system for data communication.

3. A blood collection device as claimed in claim 2, characterized in that: The collection device body (1) is provided with an indication mechanism corresponding to the pressure sensor (15).

4. A blood collection device as claimed in claim 1, characterized in that: The pipeline compression device comprises a pressing block (22) arranged toward the pipeline clamping slot (21) and an electric driver (23) for driving the pressing block (22) to move in a direction approaching or away from the pipeline clamping slot (21).

5. A blood collection device as claimed in claim 1, characterized in that: The collecting device body (1) is also provided with a lifting mechanism for driving the movable slide block (12) to slide back and forth axially along the container slot (11), and the control system is control-connected to the lifting mechanism.

6. A blood collection device as claimed in claim 5, characterized in that: The lifting mechanism comprises at least two screw rods (3), a main drive motor (4), and a plurality of transmission gears. The collection device body (1) is provided with at least two screw rods (3) arranged along its axial direction. The movable slider (12) is connected to the screw rods (3) via a screw nut. A main drive motor (4) is provided at one end of the collection device body (1). The rotating shaft of the main drive motor (4) is synchronously connected to each of the screw rods (3) via a plurality of transmission gears.

7. A blood collection device as claimed in claim 6, characterized in that: The lifting mechanism further comprises a rotary encoder synchronously connected to the rotating shaft of the main drive motor (4), and the rotary encoder is connected to the control system for data communication.

8. A blood collection device as claimed in claim 1, characterized in that: The movable slider (12) has a sleeve cavity adapted to the collection device body (1), the movable slider (12) is sleeved on the outer wall of the collection device body (1) through the sleeve cavity, both sides of the collection device body (1) are provided with opening grooves (16) arranged along the axial direction thereof, the opening grooves (16) are communicated with the container clamping groove (11), and the sleeve cavity of the movable slider (12) has a positioning slider (121) which is slidably matched with the opening grooves (16) on both sides.

9. A blood collection device as claimed in claim 8, characterized in that: The first counter-radiation sensor (13) and the second counter-radiation sensor (14) are respectively arranged at the opening slots (16) on both sides.

10. A blood collection device as claimed in claim 1, characterized in that: The outer wall of the collection device body (1) is provided with a scale (17) that cooperates with the movable sliding block (12).

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