Self-adaptive blood extraction device for medical examination

Abstract

The invention relates to the field of medical examination, in particular to a self-adaptive blood drawing device for medical examination, which comprises a patient blood drawing part fixing mechanism, a blood drawing flow velocity detection mechanism and a blood drawing self-adaptive adjusting mechanism. The fixing mechanism is used for stably fixing the arm of a patient, adopts an air bag for pressing, and is comfortable and high in adaptability; the flow velocity detection mechanism is used for monitoring the blood flow velocity in the blood drawing process in real time; the self-adaptive adjusting mechanism is a core and can actively adjust the negative pressure in the blood storage tube through a precise mechanical structure according to a flow velocity feedback signal, so that the blood flow velocity is intelligently maintained in an optimal range. The defects that the negative pressure of a traditional vacuum blood sampling method is fixed and cannot be adjusted are overcome, intelligentization and self-adaptive control of the blood drawing process are achieved, and the device has the advantages of being high in blood drawing success rate, good in blood sample quality, safe and stable in operation, high in patient comfort degree and the like.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of medical examination, in particular to a self-adaptive blood extraction device for medical examination. BACKGROUND

[0002] In the field of medical examination, blood extraction is a fundamental and critical step for disease diagnosis, health assessment and scientific research. Currently, manual vacuum blood collection method is widely used in clinical practice, that is, medical staff pierces the needle connected with the vacuum blood storage tube into the patient's blood vessel, and relies on the pre-set negative pressure inside the storage tube to automatically suck blood.

[0003] However, this method has obvious limitations: Firstly, the blood extraction process completely depends on the fixed negative pressure of the blood storage tube, and cannot be adjusted according to the actual situation. For patients with poor blood vessel conditions, blood collection failure or blood clotting may occur due to slow blood flow. For patients with good blood vessel conditions, excessive initial negative pressure may cause fast blood flow, shear force on blood cells, and thus cause hemolysis, affecting the accuracy of test results, and may cause discomfort to patients.

[0004] Secondly, there is a lack of real-time monitoring of blood flow rate during blood extraction, and medical staff can only rely on experience, which has certain blindness.

[0005] In addition, the traditional blood extraction method requires patients to keep their arms still for a long time. For children, the elderly or unconscious patients, sudden movement may cause the needle to slip out, causing hematoma and the pain of secondary puncture.

[0006] Therefore, there is an urgent need in the art for an automatic blood extraction device that can intelligently adapt to individual differences, monitor and adjust blood extraction parameters in real time, thereby improving blood extraction success rate, ensuring blood sample quality and patient comfort. SUMMARY

[0007] To solve the above technical problems, the present application provides a self-adaptive blood extraction device for medical examination, comprising a patient blood extraction site fixing mechanism for fixing the arm of the blood extraction patient; a blood flow rate detection mechanism fixedly connected to the rear end of the patient blood extraction site fixing mechanism for storing the tools used for blood extraction; a blood extraction self-adaptive adjustment mechanism for adjusting the blood extraction of the patient; The patient blood drawing site fixing mechanism, the blood drawing flow rate detecting mechanism and the blood drawing self-adaptive adjusting mechanism are electrically connected with the controller respectively, and the storage battery supplies power for the patient blood drawing site fixing mechanism, the blood drawing flow rate detecting mechanism, the blood drawing self-adaptive adjusting mechanism and the controller.

[0008] Preferably, the patient blood drawing site fixing mechanism comprises a base, a lower placing groove is formed in the middle of the upper end of the base, a support frame is fixedly connected to the upper end of the base, a pressing assembly is connected to the lower end of the support frame, and a plurality of leveling assemblies are fixedly connected to the lower end of the base.

[0009] Preferably, the pressing assembly comprises an electric telescopic rod fixedly connected to the inner top of the support frame, an air compressor and a main pipe, the lower end of the electric telescopic rod is fixedly connected with an upper pressing plate, the lower end of the upper pressing plate is fixedly connected with an air bag, the upper end of the air bag is provided with an air inlet / outlet opening penetrating through the upper pressing plate and provided with a valve, a threaded telescopic pipe is fixedly connected between the main pipe and the air inlet / outlet opening through flanges, and the air port of the air compressor is fixedly connected with the main pipe.

[0010] Preferably, the inside of the air bag is fixedly connected with a first pressure sensor, and the first pressure sensor is electrically connected with the controller.

[0011] Preferably, the leveling assembly comprises an internally threaded hole formed in the lower end of the base, a threaded rod is screwedly connected in the internally threaded hole, a rotating seat is rotatably connected to the lower end of the threaded rod, and a suction disc is fixedly connected to the lower end of the rotating seat.

[0012] Preferably, the blood drawing flow rate detecting mechanism comprises a placing support plate fixedly connected to the rear end of the base, the upper end of the placing support plate is provided with a receiving groove, a plurality of flow rate testing pieces are fixedly connected to one side of the placing support plate, a flow sensor is fixedly connected in each of the plurality of flow rate testing pieces, and the flow sensor is electrically connected with the controller.

[0013] Preferably, the blood drawing self-adaptive adjusting mechanism comprises a blood drawing assembly for drawing blood, a blood storage assembly for storing blood, and an adjusting assembly for adjusting the pressure inside the blood storage assembly.

[0014] Preferably, the blood drawing assembly comprises a second hose, one end of the second hose is fixedly connected with a second needle, the other end of the second hose is fixedly connected with a third needle, and a speed regulator is slidably sleeved on the outside of the second hose.

[0015] Preferably, the blood storage assembly comprises a blood storage tube, and a rubber plug is connected to the opening of the blood storage tube.

[0016] Preferably, the adjusting assembly comprises a pressure regulating cylinder, a rubber sealing pad is slidably connected in the pressure regulating cylinder, a pressure regulating rod is rotatably connected to the lower end of the rubber sealing pad, one end of the pressure regulating rod penetrates through the pressure regulating cylinder and is fixedly connected with a pulling disc, a pressure reducing ring is detachably sleeved at the inlet of the pressure regulating cylinder, a second pressure sensor electrically connected with the controller is fixedly connected in the pressure reducing ring, and a first hose is detachably sleeved at one end of the pressure reducing ring, and a first needle is fixedly connected to one end of the first hose.

[0017] And further comprising a motor, the output shaft of the motor is fixedly connected with the pulling disc through a bearing, the motor is electrically connected with the controller, when the motor is started, the pressure regulating cylinder is held still, so that the pressure regulating cylinder does not rotate with the motor and the pressure regulating work can be carried out.

[0018] Preferably, an internally threaded through hole is formed in the lower end of the pressure regulating cylinder, an external thread is formed on the outer side of the pressure regulating rod, and the pressure regulating rod is threadedly connected in the internally threaded through hole.

[0019] Preferably, the first needle and the second needle can penetrate through the rubber plug and be inserted into the inside of the blood storage tube, a second speed regulator is sleeved on the outer side of the first hose, and the second hose is sleeved in the flow rate inspection piece.

[0020] The technical effects and advantages of the present application are as follows: 1. Strong self-adaptability and high success rate: the blood flow rate detection mechanism can monitor the blood flow rate in real time, and the blood self-adaptive adjusting mechanism can dynamically adjust the negative pressure in the blood storage tube, so that the blood extraction process can intelligently adapt to the blood vessel conditions and blood pressure levels of different patients, whether the blood vessel is weak or strong, the system can stabilize the blood flow rate in the ideal range, greatly improving the success rate of one-time blood extraction, and being especially suitable for difficult patients with poor blood vessel conditions.

[0021] 2. High sample quality and accurate test results: by avoiding the problems of excessive negative pressure leading to excessive blood flow and hemolysis, and slow blood flow leading to blood clotting, the device can effectively guarantee the quality of the collected blood sample, and provide a more reliable and accurate sample basis for subsequent medical tests.

[0022] 3. Stable and safe operation, good patient comfort: the patient blood extraction site fixing mechanism can reliably constrain the patient's arm, prevent the needle from slipping off and hematoma caused by accidental movement, and especially adopts the air bag pressurization method, which is uniform and soft, and can adapt to different arm circumferences, avoiding the compression discomfort caused by traditional bandage fixation, and improving the patient's experience.

[0023] 4. High intelligence and automation: the entire system is controlled by a controller, integrating sensing, detection, execution and other functions, realizing closed-loop automatic control of the blood drawing process, which reduces the over-reliance on personal experience of the operator, helps to standardize the blood drawing operation process, and reduces human errors.

[0024] 5. Function integration, strong practicality: the device integrates functions such as fixing, tool storage, flow rate detection, negative pressure adjustment, etc., with compact structure and convenient use. The leveling assembly ensures the stability of the device on various countertops, further ensuring the reliability of the operation. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a structural schematic diagram of a self-adaptive blood drawing device for medical examination provided by an embodiment of the present application; Figure 2 is a structural schematic diagram of a patient blood drawing site fixing mechanism in a self-adaptive blood drawing device for medical examination provided by an embodiment of the present application; Figure 3 is a sectional view of a patient blood drawing site fixing mechanism in a self-adaptive blood drawing device for medical examination provided by an embodiment of the present application; Figure 1 ; Figure 4 is a sectional view of a patient blood drawing site fixing mechanism in a self-adaptive blood drawing device for medical examination provided by an embodiment of the present application; Figure 2 ; Figure 5 is a sectional view of a blood drawing flow rate detection mechanism in a self-adaptive blood drawing device for medical examination provided by an embodiment of the present application; Figure 2 ; Figure 6 is a whole structural schematic diagram of a blood drawing self-adaptive adjustment mechanism in a self-adaptive blood drawing device for medical examination provided by an embodiment of the present application; Figure 7 is a sectional view of a blood drawing self-adaptive adjustment mechanism in a self-adaptive blood drawing device for medical examination provided by an embodiment of the present application; In the drawings: 100, patient blood extraction site fixing mechanism; 200, blood extraction flow rate detection mechanism; 300, blood extraction self-adaptive adjustment mechanism; 101, base; 1011, lower placement groove; 102, support frame; 103, pressing assembly; 1031, electric telescopic rod; 1032, upper pressing plate; 1033, air bag; 1034, air compressor; 1035, main pipe; 1036, threaded telescopic pipe; 1037, air inlet and outlet; 104, leveling assembly; 1041, internally threaded hole; 1042, threaded rod; 1043, rotating seat; 1044, suction cup; 201, placement support plate; 202, storage groove; 203, flow rate inspection piece; 301, blood extraction assembly; 302, blood storage assembly; 303, adjustment assembly; 3031, pressure regulating cylinder; 3032, rubber sealing gasket; 3033, pressure regulating rod; 3034, pulling disc; 3035, pressure relief ring; 3036, first hose; 3037, first needle; 3021, blood storage tube; 3022, rubber plug; 3011, second hose; 3012, second needle; 3013, third needle; 3014, speed regulator. DETAILED DESCRIPTION

[0026] The application will be further described below in conjunction with the drawings and specific embodiments. The embodiments of the application are given for illustrative and descriptive purposes only and are not exhaustive or limiting of the application. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments were chosen and described in order to best explain the principles of the application and its practical application and to enable others skilled in the art to understand the application for various embodiments with various modifications as are suited to the particular use contemplated.

[0027] Embodiment 1

[0028] Please refer to Figures 1-7 In this embodiment, a self-adaptive blood extraction device for medical examination is provided, comprising The patient blood extraction site fixing mechanism 100 is used to fix the arm of the blood extraction patient. The blood extraction flow rate detection mechanism 200 is fixedly connected to the rear end of the patient blood extraction site fixing mechanism 100 and is used to store the tools used for blood extraction. The blood extraction self-adaptive adjustment mechanism 300 is used to adjust the blood extraction of the patient. The controller and the storage battery are further included. The patient blood extraction site fixing mechanism 100, the blood extraction flow rate detection mechanism 200 and the blood extraction self-adaptive adjustment mechanism 300 are electrically connected with the controller, and the storage battery supplies power to the patient blood extraction site fixing mechanism 100, the blood extraction flow rate detection mechanism 200, the blood extraction self-adaptive adjustment mechanism 300 and the controller.

[0029] The patient blood drawing site fixation mechanism 100 includes a base 101. A lower placement groove 1011 is provided in the middle of the upper end of the base 101. A support frame 102 is fixedly connected to the upper end of the base 101. A clamping assembly 103 is connected to the lower end of the support frame 102. Multiple sets of leveling assemblies 104 are fixedly connected to the lower end of the base 101. The clamping assembly 103 includes an electric telescopic rod 1031 fixedly connected to the top of the support frame 102, an air compressor 1034, and a main pipe 1035. An upper pressure plate 1032 is fixedly connected to the lower end of the electric telescopic rod 1031. An airbag 1033 is fixedly connected to the lower end of the upper pressure plate 1032, and an opening is provided at the upper end of the airbag 1033. An air inlet / outlet 1037 with a valve passes through the upper pressure plate 1032. A threaded telescopic pipe 1036 is fixedly connected between the main pipe 1035 and the air inlet / outlet 1037 via a flange. The air port of the air compressor 1034 is fixedly connected to the main pipe 1035. A first pressure sensor is fixedly connected inside the airbag 1033 and is electrically connected to the controller. The leveling assembly 104 includes an internally threaded hole 1041 at the lower end of the base 101. A threaded rod 1042 is threaded inside the internally threaded hole 1041. A rotating seat 1043 is rotatably connected to the lower end of the threaded rod 1042. A suction cup 1044 is fixedly connected to the lower end of the rotating seat 1043.

[0030] The patient blood drawing site fixation mechanism 100 can safely and stably fix the patient's blood drawing site, usually the forearm, to prevent blood drawing failure or injury caused by patient movement; the lower placement groove 1011 is used to support the patient's arm; the clamping assembly 103 presses the arm from above to achieve fixation; the electric telescopic rod 1031 provides the main downward pressure and drives the upper pressure plate to rise and fall; the upper pressure plate 1032 is used to connect and support the airbag; after inflation, the airbag 1033 can adapt to the shape of arms of different thicknesses, providing gentle and uniform pressure to avoid excessive local pressure, and the internal first pressure sensor is used to monitor and control the pressure on the arm to prevent it from being too tight; the air compressor 1034, the main pipe 1035, and the threaded telescopic tube 1036 provide the power and passage for inflation and deflation of the airbag; the height of the device is adjusted by rotating the threaded rod 1042 to keep the base level and ensure stability, and the suction cup 1044 can further enhance the ability to adhere to a smooth table surface.

[0031] The blood flow rate detection mechanism 200 includes a placement support plate 201 fixedly connected to the rear end of the base 101. The upper end of the placement support plate 201 is provided with a storage groove 202. Multiple sets of flow rate test pieces 203 are fixedly connected to one side of the placement support plate 201. Each set of flow rate test pieces 203 has a flow sensor fixedly connected inside. The flow sensor is electrically connected to the controller.

[0032] The support plate 201 and the storage slot 202 are used to place and organize unused blood collection tubes and other tools. The flow sensor inside the flow rate test piece 203 is the core component, used to accurately measure the blood flow rate through the blood collection tube and transmit the data to the controller in real time. The flow sensor used in this solution is non-contact.

[0033] The blood-drawing adaptive adjustment mechanism 300 includes a blood-drawing assembly 301 for drawing blood, a blood-storage assembly 302 for storing blood, and an adjustment assembly 303 for adjusting the internal pressure of the blood-storage assembly 302. The blood-drawing assembly 301 includes a second tubing 3011, one end of which is fixedly connected to a second needle 3012, and the other end of which is fixedly connected to a third needle 3013. A speed regulator is slidably sleeved on the outer side of the second tubing 3011. 3014; Blood storage component 302 includes a blood storage tube 3021, and a rubber stopper 3022 is connected to the opening of the blood storage tube 3021; ​​Adjustment component 303 includes a pressure regulating cylinder 3031, a rubber sealing gasket 3032 is slidably connected inside the pressure regulating cylinder 3031, a pressure regulating rod 3033 is rotatably connected to the lower end of the rubber sealing gasket 3032, one end of the pressure regulating rod 3033 passes through the pressure regulating cylinder 3031 and is fixedly connected to a pull plate 3034, and the inlet of the pressure regulating cylinder 3031 is detachable. A pressure reducing ring 3035 is fitted, and a second pressure sensor electrically connected to the controller is fixedly connected inside the pressure reducing ring 3035. A first flexible tube 3036 is detachably fitted at one end of the pressure reducing ring 3035, and a first needle 3037 is fixedly connected at one end of the first flexible tube 3036. An internally threaded through hole is opened at the lower end of the pressure regulating cylinder 3031, and an external thread is opened on the outer side of the pressure regulating rod 3033. The pressure regulating rod 3033 is threadedly connected inside the internally threaded through hole. The first needle 3037 and the second needle 3012 can both penetrate the rubber stopper 3022 and be inserted into the reservoir tube 3021. A second speed regulator is fitted on the outer side of the first flexible tube 3036, and the second flexible tube 3011 is fitted inside the flow rate test piece 203. The system also includes a motor. The output shaft of the motor is fixedly connected to the pull plate through a bearing. The motor is electrically connected to the controller. When starting the motor, hold the pressure regulating cylinder still to prevent the pressure regulating cylinder from rotating with the motor and thus preventing the pressure regulating operation from being interrupted. The blood-drawing adaptive adjustment mechanism 300 is used to perform the blood-drawing operation and automatically adjusts the negative pressure based on feedback from the flow rate detection mechanism to achieve adaptive blood drawing; the third needle 3013 pierces the patient's blood vessel; the second needle 3012 pierces the rubber stopper of the storage tube; the second flexible tube 3011 connects the two needles to form a blood flow channel; the speed controller 3014 is an adjustable mechanical clamp that manually controls the blood flow cross-section by physically squeezing the flexible tube, serving as an auxiliary flow control method. This is existing technology and will not be described in detail here; the blood storage component 302 stores the collected blood sample; the storage tube 302... 1 is a standard vacuum blood collection tube; rubber stopper 3022: seals the storage tube and allows for needle puncture; adjustment component 303: a core innovative part used to actively adjust the pressure inside the storage tube; pressure regulating cylinder 3031 is a sealed cavity; by rotating the pull plate 3034, the pressure regulating rod is driven, causing the rubber sealing gasket to move inside the pressure regulating cylinder, thereby changing the internal volume of the pressure regulating cylinder 3031 and generating or releasing pressure; the first flexible tube 3036 and the first needle 3037 connect the pressure regulating cylinder and the storage tube; the pressure reducing ring 3035 has a second pressure sensor inside, used to accurately monitor and control the air pressure leading to the storage tube.

[0034] In addition, the controller is the "brain" of this solution. It receives signals from the flow sensor and two pressure sensors, and controls the operation of the electric telescopic rod, air compressor and motor in the regulating component according to the preset algorithm, so as to realize the automation and self-adaptation of the whole process.

[0035] The battery provides portable power to all power-consuming units.

[0036] The working process of this invention is a typical "perception-decision-execution" closed-loop automatic control process, and the specific steps are as follows: 1. Preparation and Fixation Place the device in a suitable position and keep the base 101 level and stable by rotating the threaded rods of the leveling components 104 at each corner.

[0037] The patient places his arm into the lower placement slot 1011 of the base.

[0038] The operator activates the clamping assembly 103 via the controller, the electric telescopic rod 1031 extends, driving the upper pressure plate 1032 and the airbag 1033 to descend and gently touch the arm.

[0039] The air compressor 1034 starts and inflates the airbag 1033 through the main pipe 1035 and the threaded telescopic pipe 1036. The airbag expands and gently wraps around and presses against the arm. The first pressure sensor monitors the pressure in real time. When the preset safe pressure value is reached, the controller instructs the air compressor to stop inflating, and the fixation is completed.

[0040] 2. Connect to the blood drawing system The operator removes the blood storage component 302 and the blood drawing component 301 from the storage slot 202 of the blood flow rate detection mechanism 200.

[0041] The second tubing 3011 of the blood collection assembly 301 is passed through a flow rate tester 203 so that the flow sensor inside can monitor blood flow.

[0042] When the first needle 3037 of the adjustment component 303 and the second needle 3012 of the blood-drawing component are simultaneously inserted into the rubber stopper 3022 of the storage tube, the storage tube, the adjustment component, and the blood-drawing component are connected into a connected system through the tubing and the needle.

[0043] 3. Puncture and Adaptive Blood Draw The operator inserts the third needle 3013 of the blood-drawing assembly 301 into a blood vessel in the patient's fixed arm.

[0044] Initial stage: Under the original negative pressure of the storage vessel, blood begins to flow into the storage vessel through the second tubing.

[0045] Monitoring and feedback: The flow sensor in the flow rate test piece 203 monitors the blood flow rate in real time and sends the data to the controller.

[0046] Adjust according to flow rate: When the flow rate is too slow, the controller determines that the flow rate is lower than the ideal value. It will instruct the motor of the regulating component 303 to work. The operator will always hold the pressure regulating cylinder 3031 and keep its position unchanged. The pressure regulating rod 3033 will be rotated in the opposite direction. The rubber sealing gasket 3032 will be pulled out of the cylinder through the pull plate 3034, increasing the volume inside the pressure regulating cylinder 3031. This will increase the negative pressure in the storage tube and promote the blood flow rate to increase.

[0047] When the flow rate is too fast, the controller determines that the flow rate is too high. It will instruct the regulating component to rotate the pressure regulating rod in the forward direction, push the rubber sealing gasket to move into the cylinder, reduce the volume of the pressure regulating cylinder, reduce the negative pressure in the storage blood vessel, and slow down the blood flow.

[0048] Throughout the process, the second pressure sensor inside the pressure reducing coil 3035 of the regulating component 303 continuously monitors the system pressure to ensure that the pressure is within a safe range and to prevent damage to blood vessels or blood cells due to excessive negative pressure.

[0049] The operator can also manually adjust the speed controller 3014 on the blood drawing assembly 301 according to the actual situation, and slightly squeeze the tubing as an auxiliary fine adjustment of the flow rate.

[0050] 4. Completion and Reset Once the required blood volume has been collected, the specific blood volume can be determined by time-flow rate integration or direct weighing, and the operator removes the needle from the patient's blood vessel.

[0051] The controller controls the regulating component 303 to restore the system pressure to normal pressure.

[0052] The airbag 1033 of the compression assembly 103 deflates, the electric telescopic rod 1031 retracts, and the patient's arm is released.

[0053] The operator removes the blood-filled blood collection tube from the device, labels it, and disposes of used needles and other waste according to regulations.

[0054] The device ensures stability through a fixing mechanism, senses the status in real time through a flow rate detection mechanism, and dynamically adjusts the suction force through an adaptive adjustment mechanism. This enables the blood drawing process to be intelligent, safe, and personalized, effectively meeting the blood drawing needs of patients with different vascular conditions and improving the success rate and comfort of a single blood draw.

[0055] The detailed description of known functions and components is omitted in this disclosure. For example, electric telescopic rods, motors, flow sensors, pressure sensors, air compressors, etc. are all existing devices or equipment, or devices or equipment that can be implemented by existing technology. Their power supply, specific composition and principle are clear to those skilled in the art, so they will not be described in detail. In order to ensure the compatibility of the equipment, the operating methods adopted are consistent with the parameters of commercially available instruments.

[0056] In this solution, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this solution according to the specific circumstances.

[0057] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. An adaptive blood extraction device for medical testing, characterized in that, include Patient blood drawing site fixation mechanism (100), the patient blood drawing site fixation mechanism (100) is used to fix the arm of the patient having blood drawn; Blood flow rate detection mechanism (200), which is fixedly connected to the rear end of the patient blood drawing site fixing mechanism (100) and is used to store the tools to be used for blood drawing; A blood-drawing adaptive adjustment mechanism (300) is used to adjust the blood draw from the patient; It also includes a controller and a battery. The patient blood drawing site fixing mechanism (100), the blood drawing flow rate detection mechanism (200), and the blood drawing adaptive adjustment mechanism (300) are electrically connected to the controller. The battery provides power to the patient blood drawing site fixing mechanism (100), the blood drawing flow rate detection mechanism (200), the blood drawing adaptive adjustment mechanism (300), and the controller.

2. The adaptive blood extraction device for medical testing according to claim 1, characterized in that, The patient blood drawing site fixing mechanism (100) includes a base (101), a lower placement groove (1011) is provided in the middle of the upper end of the base (101), a support frame (102) is fixedly connected to the upper end of the base (101), a pressing component (103) is connected to the lower end of the support frame (102), and multiple sets of leveling components (104) are fixedly connected to the lower end of the base (101).

3. The adaptive blood extraction device for medical testing according to claim 2, characterized in that, The clamping assembly (103) includes an electric telescopic rod (1031), an air compressor (1034), and a main pipe (1035) fixedly connected to the top of the support frame (102). The lower end of the electric telescopic rod (1031) is fixedly connected to an upper pressure plate (1032). The lower end of the upper pressure plate (1032) is fixedly connected to an air bladder (1033). The upper end of the air bladder (1033) has an air inlet / outlet (1037) that penetrates the upper pressure plate (1032) and is equipped with a valve. The main pipe (1035) and the air inlet / outlet (1037) are fixedly connected by a threaded telescopic pipe (1036) through a flange. The air port of the air compressor (1034) is fixedly connected to the main pipe (1035).

4. The adaptive blood extraction device for medical testing according to claim 3, characterized in that, A first pressure sensor is fixedly connected inside the airbag (1033), and the first pressure sensor is electrically connected to the controller.

5. The adaptive blood extraction device for medical testing according to claim 2, characterized in that, The leveling component (104) includes an internal threaded hole (1041) at the lower end of the base (101), a threaded rod (1042) is internally threaded into the internal threaded hole (1041), a rotating seat (1043) is rotatably connected to the lower end of the threaded rod (1042), and a suction cup (1044) is fixedly connected to the lower end of the rotating seat (1043).

6. The adaptive blood extraction device for medical testing according to claim 2, characterized in that, The blood flow rate detection mechanism (200) includes a placement support plate (201) fixedly connected to the rear end of the base (101). The upper end of the placement support plate (201) is provided with a storage groove (202). Multiple sets of flow rate test pieces (203) are fixedly connected to one side of the placement support plate (201). Each set of flow rate test pieces (203) is fixedly connected to a flow sensor. The flow sensor is electrically connected to the controller.

7. The adaptive blood extraction device for medical testing according to claim 6, characterized in that, The blood-drawing adaptive adjustment mechanism (300) includes a blood-drawing component (301) for drawing blood, a blood-storing component (302) for storing blood, and an adjustment component (303) for adjusting the internal pressure of the blood-storing component (302).

8. The adaptive blood extraction device for medical testing according to claim 7, characterized in that, The blood drawing assembly (301) includes a second tubing (3011), one end of which is fixedly connected to a second needle (3012), and the other end of which is fixedly connected to a third needle (3013). A speed regulator (3014) is slidably sleeved on the outside of the second tubing (3011). The blood storage component (302) includes a blood storage vessel (3021), and a rubber stopper (3022) is connected to the opening of the blood storage vessel (3021).

9. The adaptive blood extraction device for medical testing according to claim 8, characterized in that, The adjusting component (303) includes a pressure regulating cylinder (3031), a rubber sealing gasket (3032) is slidably connected inside the pressure regulating cylinder (3031), a pressure regulating rod (3033) is rotatably connected to the lower end of the rubber sealing gasket (3032), one end of the pressure regulating rod (3033) passes through the pressure regulating cylinder (3031) and is fixedly connected to a pull plate (3034), and a pressure reducing ring (3035) is detachably sleeved at the inlet of the pressure regulating cylinder (3031), a second pressure sensor electrically connected to the controller is fixedly connected inside the pressure reducing ring (3035), and a first flexible tube (3036) is detachably sleeved at one end of the pressure reducing ring (3035), and a first needle (3037) is fixedly connected to one end of the first flexible tube (3036). The lower end of the pressure regulating cylinder (3031) is provided with an internal threaded through hole, and the outer side of the pressure regulating rod (3033) is provided with an external thread. The pressure regulating rod (3033) is threadedly connected inside the internal threaded through hole and also includes a motor. The output shaft of the motor is fixedly connected to the pull plate (3034).

10. The adaptive blood extraction device for medical testing according to claim 9, characterized in that, The first needle (3037) and the second needle (3012) can both penetrate the rubber stopper (3022) and be inserted into the inside of the reservoir tube (3021). The first flexible tube (3036) is fitted with a second speed regulator on its outer side, and the second flexible tube (3011) is fitted into the inside of the flow rate test piece (203).

Images