Fixing device for cardiology department clinical examination blood sampling

Abstract

The invention relates to the field of medical instruments, in particular to a fixing device for cardiology department clinical examination blood sampling, which comprises a way-finding obstacle-avoiding vehicle, a controller and a loudspeaker are fixedly connected to the way-finding obstacle-avoiding vehicle, a blood sampling platform is fixedly connected to the top of the way-finding obstacle-avoiding vehicle, and an arm fixing buckle is arranged on the blood sampling platform; an image collector is arranged on the blood sampling platform; the controller is used for acquiring the image collected by the image collector, identifying the position of a preset blood sampling puncture point on the arm of the patient and judging whether the position relation between the blood sampling puncture point and the arm fixing buckle meets the blood sampling fixing requirement or not; when the position relation between the blood sampling puncture point of the patient and the arm fixing buckle does not meet the blood sampling fixing requirement, the controller controls the loudspeaker to broadcast voice used for guiding the arm of the patient to move to the position meeting the blood sampling fixing requirement. By the adoption of the technical scheme, a patient can go to the position of the patient autonomously before blood sampling, limb fixing operation needed by blood sampling is completed in advance, and the workload of medical staff is reduced.

Description

Technical Field

[0001] The present invention relates to the field of medical devices, and particularly to a fixing device for blood collection in clinical examination of cardiology department. Background Art

[0002] In the diagnosis and treatment process of cardiovascular diseases, frequent blood biochemical tests (such as myocardial enzyme spectrum, electrolytes, coagulation function, etc.) are routine clinical requirements. Traditional blood collection operations mostly rely on medical staff to manually fix the patient's limbs. Especially for special populations such as the elderly, patients with arrhythmia or limb tremors, it is easy to cause puncture failure, hematoma formation or even blood vessel injury due to difficult blood vessel positioning and limb shaking. Most existing fixing devices use simple straps or rigid brackets, which have problems such as uneven pressure distribution and poor adjustment flexibility, and lack anatomical adaptation design for different blood collection sites (such as radial artery, elbow vein). In addition, traditional devices have limitations in terms of disinfection and isolation, prevention of needle stick injuries and patient comfort, and there is an urgent need to develop a new type of fixing device with stability, safety and humanization.

[0003] In the prior art, for example, the patent publication number CN113349774B discloses a fixing device for blood collection in clinical examination of cardiology department, which can reduce the number of times of hands touching shared equipment by users, reduce the infection rate, and assist medical staff to complete blood collection work efficiently and with high quality. The patent publication number CN210124776U discloses a fixing device for blood collection in clinical examination of cardiology department, which can quickly unlock the state of fixing the patient's arm. However, all existing blood collection fixing devices require users to carry or operate them personally before blood collection, and it is difficult to effectively improve medical efficiency. A medicine delivery robot is a new type of intelligent robot that can perform autonomous path finding and deliver drugs to patients through a preset program, aiming to reduce the workload of medical staff and improve the work efficiency of the hospital. Since there are common points between the work of clinical examination blood collection and drug delivery, that is, both require medical staff to go to the patient's place, a fixing device for blood collection in clinical examination of cardiology department that can autonomously go to the patient's place in advance and perform pre-treatment before blood collection is proposed. Summary of the Invention

[0004] To solve the above problems, the present invention provides a fixing device for blood collection in clinical examination of cardiology department, which is used to autonomously go to the patient's place before blood collection and complete the limb fixing operation required for blood collection in advance, reducing the workload of medical staff.

[0005] To achieve the above object, the technical solution of the present invention is as follows: A fixing device for blood collection in clinical examination of cardiology department, including a path-finding and obstacle-avoiding vehicle, which is used to find a path and move to a preset patient's hospital bed. A controller, a speaker and a power supply are fixedly connected to the path-finding and obstacle-avoiding vehicle. A blood collection platform is fixedly connected to the top of the path-finding and obstacle-avoiding vehicle. An arm fixing buckle is provided on the blood collection platform. The arm fixing buckle is provided with a first driving member, and the first driving member is used to drive the opening and closing of the arm fixing buckle;

[0006] An image collector is provided on the blood collection platform, and the image collector is used to collect an image of the relationship between the patient's arm and the arm fixing buckle;

[0007] The controller is used to obtain the image collected by the image collector, identify the position of the preset blood collection puncture point on the patient's arm, and judge whether the relationship between the blood collection puncture point and the position of the arm fixing buckle meets the blood collection and fixation requirements; when the relationship between the patient's blood collection puncture point and the position of the arm fixing buckle meets the blood collection and fixation requirements, the controller controls the arm fixing buckle to close; when the relationship between the patient's blood collection puncture point and the position of the arm fixing buckle does not meet the blood collection and fixation requirements, the controller controls the speaker to broadcast a voice for guiding the patient's arm to move to a position that meets the blood collection and fixation requirements.

[0008] The following are the beneficial effects of adopting the above solution:

[0009] 1. In this solution, the path-finding and obstacle-avoiding vehicle moves to the patient's hospital bed before the medical staff arrives at the patient. The path-finding and obstacle-avoiding functions of the path-finding and obstacle-avoiding vehicle support it to avoid pedestrians and obstacles in the hospital and move autonomously according to the hospital map. After the path-finding and obstacle-avoiding vehicle moves to the patient's hospital bed, the patient can first complete the arm fixation work on the blood collection platform, so that when the medical staff arrives later, the blood collection work can be directly carried out, reducing the work process of the medical staff.

[0010] 2. In this solution, when the patient is performing the arm fixation work, the arm needs to be placed in the arm fixing buckle on the blood collection platform. The image collector will collect an image including the patient's arm and the arm fixing buckle, and automatically judge whether the patient's arm position is placed correctly according to the different preset blood collection puncture points. When the patient's arm position is not placed correctly, the speaker will broadcast a voice for guiding the patient's arm to move to a position that meets the blood collection and fixation requirements, so as to guide the patient to adjust the arm position until it meets the blood collection and fixation requirements. After the patient's arm position meets the blood collection and fixation requirements, the arm fixing buckle automatically closes, and the patient waits for the medical staff to arrive and complete the blood collection work.

[0011] Further, the number of arm fixing buckles is at least 1. An airbag strip is provided on the inner side of each arm fixing buckle, and an air pump is provided on the path-finding and obstacle-avoiding vehicle. The airbag strips are all communicated with the air pump.

[0012] Beneficial effects: According to different requirements for arm fixation, there can be multiple arm fixation buckles. Airbag strips are provided on the inner sides of the arm fixation buckles, which can expand after inflation, can adjust the inner diameter of the arm fixation buckles, so as to adapt to the thickness differences at different positions of the arm and also adapt to patients with different body types.

[0013] Further, a rotating plate is rotatably connected to the blood collection platform. A second driving member is provided on the blood collection platform, and the second driving member is used to drive the rotating plate to rotate. An arc-shaped groove is formed at one end of the rotating plate away from the blood collection platform. The arc-shaped groove is provided with a curvature for fitting the contour of the patient's arm. The image collector is located in the arc-shaped groove, and a supplementary light is provided in the arc-shaped groove;

[0014] The controller is used to, after the arm fixation buckle is closed, control the second driving member to rotate so that the arc-shaped groove fits at the blood collection puncture point on the patient's arm, and then control the image collector to zoom in and collect an image of the blood collection puncture point. The controller is used to judge the blood vessel clarity in the image of the blood collection puncture point based on image recognition.

[0015] Beneficial effects: After the patient's arm is fixed, the rotating plate will rotate and the arc-shaped groove will fit the patient's arm. At this time, the patient's arm is embedded in the arc-shaped groove. The supplementary light is used to irradiate the blood collection puncture point of the patient, which can improve the contrast at the blood collection puncture point of the patient, and control the image collector to zoom in and collect an image of the blood collection puncture point of the patient to judge whether the blood vessels at the blood collection puncture point of the patient are clear.

[0016] Further, heating wires are embedded in the arc-shaped groove;

[0017] The controller is also used to, when the blood vessel clarity in the image of the blood collection puncture point is less than a preset value, start the heating wires to apply hot compress to the blood collection puncture point.

[0018] Beneficial effects: When the blood vessels at the blood collection puncture point of the patient are not clear, the reasons may be that the patient's blood vessels are thin or deep, obese or with poor venous filling. The heating wires can raise the temperature at the blood collection puncture point, so as to apply hot compress to the patient, promote the patient's blood circulation, and improve the patient's venous filling, make the blood vessels more obvious, and reduce the difficulty for subsequent medical staff to collect blood.

[0019] Further, pressure sensors are fixedly connected to the airbag strips.

[0020] Beneficial effects: The pressure sensors can detect the contact pressure between the airbag strips and the patient's arm, so as to judge the contact situation between the airbag strips and the patient's arm through the pressure indication.

[0021] Further, the controller is also used to, when the blood vessel clarity in the image of the blood collection puncture point is less than a preset value, increase the inflation degree of the airbag strips far from the end of the patient's arm through an air pump.

[0022] Beneficial effects: By enhancing the inflation degree of the airbag strips far from the end of the patient's arm, venous return can be reduced, thereby filling the distal end, improving the visibility of blood vessels, making the blood vessels more obvious, and reducing the difficulty for subsequent medical staff to perform blood collection.

[0023] Furthermore, the preset blood collection puncture point positions include the wrist, forearm, and cubital fossa.

[0024] Beneficial effects: There are multiple blood collection puncture point positions, which can be freely selected according to the patient's condition. The blood collection puncture points at the wrist, forearm, and cubital fossa can all be fixed by one or more arm fixing buckles.

[0025] Furthermore, a display screen and a microphone are fixedly connected to the path - finding and obstacle - avoiding vehicle, and the controller is signal - connected to a wireless module; the display screen is used to play a demonstration video, and the controller is also used to establish remote communication between medical staff and patients through the wireless module.

[0026] Beneficial effects: The display screen can further assist the patient to complete the arm - fixing operation. By playing a demonstration video, the patient can further understand how to move the arm on the blood collection platform. In addition, the wireless module can establish remote communication between medical staff and patients, facilitating patients to consult operation details and the arrival time of medical staff, etc.

[0027] Furthermore, a handrest pad is fixedly connected to the blood collection platform.

[0028] Beneficial effects: The handrest pad can not only remind the patient of the position where the arm should be placed, but also improve the patient's comfort level and optimize the patient's experience.

[0029] Furthermore, a medical device storage box and a blood sample storage box are provided on the path - finding and obstacle - avoiding vehicle.

[0030] Beneficial effects: The ability of the path - finding and obstacle - avoiding vehicle to autonomously go to the patient can also be used to assist the doctor in carrying medical devices, such as iodine - containing disinfectant, puncture needles, cotton swabs, etc. At the same time, it can also integrate the blood sample storage function, facilitating continuous operation by medical staff and unified collection and processing of blood samples.

[0031] The additional aspects and advantages of the present invention will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is an isometric schematic diagram of an embodiment of the fixing device for clinical blood collection in cardiology department of the present invention;

[0033] Figure 2 It is a front - view schematic diagram of an embodiment of the fixing device for clinical blood collection in cardiology department of the present invention;

[0034] Figure 3 Schematic diagram of the blood collection platform for the fixed device in the clinical examination of cardiology department of the present invention

[0035] Figure 4 is Figure 3 an enlarged schematic diagram of part A of

[0036] Figure 5 is Figure 3 an enlarged schematic diagram of part B of

[0037] Reference numerals in the accompanying drawings of the specification include: 1, path - finding and obstacle - avoiding vehicle; 2, loudspeaker; 3, blood collection platform; 4, arm fixing buckle; 5, image collector; 6, airbag strip; 7, rotating plate; 8, arc - shaped groove; 9, supplementary light; 10, pressure sensor; 11, display screen; 12, microphone; 13, handrest cushion; 14, medical device storage box; 15, blood sample storage box; 16, air pump Detailed implementation manners

[0038] Next, the technical solutions of the present invention will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention

[0039] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is 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 thus cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance

[0040] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installed", "connected", "connected" 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations

[0041] The following is further detailed through specific implementation manners

[0042] Embodiment 1:

[0043] As shown in the attached Figures 1-5 figure: A fixing device for blood collection in clinical examination of cardiology department, including a path-finding and obstacle-avoiding vehicle 1. The path-finding and obstacle-avoiding vehicle 1 is a special path-finding and obstacle-avoiding vehicle for hospitals. The path-finding and obstacle-avoiding vehicle 1 is used to find the path and move to the preset patient's hospital bed. A controller, a wireless module, a display screen 11, a microphone 12, a speaker 2 and a power supply are bolted to the path-finding and obstacle-avoiding vehicle 1. A blood collection platform 3 is bolted to the top of the path-finding and obstacle-avoiding vehicle 1. Two arm fixing buckles 4 are installed on the blood collection platform 3. The arm fixing buckles 4 are semi-circular rings. The arm fixing buckles 4 are provided with a first driving member, and the first driving member is used to drive the opening and closing of the arm fixing buckles 4.

[0044] A rotating plate 7 is rotatably connected to the blood collection platform 3. A second driving member is provided on the blood collection platform 3. Both the first driver and the second driver are motors. The second driving member is used to drive the rotating plate 7 to rotate. An arc-shaped groove 8 is opened at one end of the rotating plate 7 away from the blood collection platform 3. The arc-shaped groove 8 is provided with a radian for fitting the contour of the patient's arm. An installation groove is opened in the arc-shaped groove 8. An image collector 5 is bolted in the installation groove. The image collector 5 is a camera. A supplementary light 9 is installed in the arc-shaped groove 8.

[0045] The image collector 5 is used to collect the relationship image between the patient's arm and the arm fixing buckle 4.

[0046] The controller is used to obtain the image collected by the image collector 5. The controller is used to identify the position of the preset blood collection puncture point on the patient's arm and judge whether the position relationship between the blood collection puncture point and the arm fixing buckle 4 meets the blood collection fixation requirement; when the position relationship between the patient's blood collection puncture point and the arm fixing buckle 4 meets the blood collection fixation requirement, the controller controls the arm fixing buckle 4 to close; when the position relationship between the patient's blood collection puncture point and the arm fixing buckle 4 does not meet the blood collection fixation requirement, the controller controls the speaker 2 and the display screen 11 to respectively broadcast the voice for guiding the patient's arm to move to the position that meets the blood collection fixation requirement, and play the demonstration video for guiding the patient's arm to move to the position that meets the blood collection fixation requirement.

[0047] The controller is also used to establish remote communication between medical staff and patients through the wireless module.

[0048] This embodiment is applicable to patients with normal cognition and certain mobility. Relying on the patients to independently complete the preprocessing process before blood collection, it can improve the work efficiency of medical staff and save medical resources. The pathfinding and obstacle avoidance vehicle 1 moves to the patient's hospital bed before the medical staff arrives at the patient. The pathfinding and obstacle avoidance functions of the pathfinding and obstacle avoidance vehicle 1 support it to avoid pedestrians and obstacles in the hospital and move autonomously according to the hospital map. After the pathfinding and obstacle avoidance vehicle 1 moves to the patient's hospital bed, the patient can first complete the arm fixation work on the blood collection platform 3, so that when the medical staff arrives later, they can directly start the blood collection work, reducing the work process of the medical staff. Since this process is a semi-automatic intervention, while shortening the working time of the medical staff for a single blood collection, it also maintains the communication bridge between the patient and the medical staff through remote communication to incorporate tasks such as medical publicity, explanation, and guidance that are difficult to rely on machinery to achieve, improving the patient's cooperation.

[0049] When the patient is performing the arm fixation work, the arm needs to be placed in the arm fixation buckle 4 on the blood collection platform 3. The image collector 5 will collect the image including the patient's arm and the arm fixation buckle 4, and automatically judge whether the patient's arm position is placed correctly according to the different preset blood collection puncture points. The preset blood collection puncture point positions include the wrist, forearm, and cubital fossa. Under normal circumstances, the median cubital vein in the cubital fossa is selected for blood collection.

[0050] When the patient's arm position is not placed correctly, the speaker 2 will broadcast the voice for guiding the patient to move the arm to a position that meets the blood collection fixation requirements, so as to guide the patient to adjust the arm position until the arm position meets the blood collection fixation requirements. In addition, a demonstration video can also be played on the display screen 11 to show the patient how to adjust the arm position through the video screen. Since the patient's arm is located inside the arm fixation buckle 4, the arm position adjustment only involves two directions of the arm extending or retracting, which is simple and easy to understand and can be applied to the vast majority of patients who come into contact for the first time.

[0051] When the patient's arm position meets the blood collection fixation requirements, the arm fixation buckle 4 automatically closes, and the patient waits for the medical staff to arrive and complete the blood collection work.

[0052] During the process of waiting for the medical staff to arrive, the rotating plate 7 will rotate and make the arc-shaped groove 8 fit the patient's arm. At this time, the patient's arm is embedded in the arc-shaped groove 8, and the fill light 9 is used to irradiate the blood collection puncture point of the patient, which can improve the contrast at the patient's blood collection puncture point, and control the image collector 5 to zoom in and collect the image of the patient's blood collection puncture point, and judge whether the blood vessels at the patient's blood collection puncture point are clear, facilitating the medical staff to quickly carry out corresponding treatment work later.

[0053] The function of the supplementary light 9 is to enhance the light irradiated to the blood collection puncture site. Blood vessels are located under the skin. When light penetrates the epidermis, Rayleigh scattering occurs. A large amount of blue light with a shorter wavelength will be reflected, while red light with a longer wavelength can penetrate deeper into the blood vessels until it is absorbed. Therefore, increasing the amount of light can enhance the contrast ratio between the reflected blue light and the absorbed red light, thereby improving the contrast at the patient's blood collection puncture site.

[0054] Example 2:

[0055] The difference from the above example is that airbag strips 6 are adhesively fixed to the inner sides of the arm fixing buckles 4, and an air pump 16 is bolted to the path finding and obstacle avoiding vehicle 1, and the airbag strips 6 are all communicated with the air pump 16.

[0056] Airbag strips 6 are provided on the inner sides of the arm fixing buckles 4, which can expand after being inflated, can adjust the inner diameter of the arm fixing buckles 4, so as to adapt to the thickness differences at different positions of the arm, and can also adapt to patients with different body types.

[0057] Example 3:

[0058] The difference from the above example is that a heating wire is embedded in the arc-shaped groove 8; the controller is further configured to start the heating wire to apply hot compress to the blood collection puncture site when the clarity of the blood vessels in the image at the blood collection puncture site is less than a preset value.

[0059] When the blood vessels at the patient's blood collection puncture site are not clear, the possible causes may be that the patient's blood vessels are thin or deep in position, obese or with poor venous filling. The heating wire can raise the temperature at the blood collection puncture site, thereby applying hot compress to the patient, promoting the patient's blood circulation, and making the patient's veins more full, making the blood vessels more obvious, and reducing the difficulty for subsequent medical staff to collect blood.

[0060] Example 4:

[0061] The difference from the above example is that a pressure sensor 10 is adhesively fixed to the airbag strip 6.

[0062] The pressure sensor 10 can detect the contact pressure between the airbag strip 6 and the patient's arm, so as to judge the contact situation between the airbag strip 6 and the patient's arm through the pressure indication.

[0063] Example 5:

[0064] The difference from the above example is that the controller is further configured to increase the inflation degree of the airbag strip 6 far from the end of the patient's arm through the air pump 16 when the clarity of the blood vessels in the image at the blood collection puncture site is less than a preset value.

[0065] By enhancing the inflation degree of the airbag strip 6 far from the end of the patient's arm, venous return can be reduced, thereby filling the distal end, improving the visibility of blood vessels, making the blood vessels more obvious, and reducing the difficulty for subsequent medical staff to collect blood.

[0066] Embodiment 6:

[0067] The difference from the above embodiment is that a handrest cushion 13 is adhesively fixed on the blood collection platform 3. A medical device storage box 14 and a blood sample storage box 15 are provided on the path-finding and obstacle-avoiding vehicle 1. Among them, a disinfection lamp is provided in the medical device storage box 14, and the blood sample storage box 15 is a refrigerated box.

[0068] The handrest cushion 13 can not only remind the patient of the position where the arm should be placed, but also improve the patient's use comfort and optimize the patient experience. The ability of the path-finding and obstacle-avoiding vehicle 1 to autonomously move to the patient can also be used to assist the doctor in carrying medical devices, such as iodophor, puncture needles, cotton swabs, etc. At the same time, it can also integrate the blood sample storage function, facilitating continuous operation by medical staff and unified collection and processing of blood samples.

[0069] Obviously, the above embodiments are merely examples given for clear illustration and are not limitations on the implementation manners. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation manners here. And the obvious changes or modifications derived therefrom are still within the protection scope of the present invention.

Claims

1. A fixing device for blood collection in clinical examination of cardiology department, characterized in that, It includes a path - finding and obstacle - avoiding vehicle (1). The path - finding and obstacle - avoiding vehicle (1) is used to find a path and move to a preset patient's hospital bed. A controller, a speaker (2) and a power supply are fixedly connected to the path - finding and obstacle - avoiding vehicle (1). A blood collection platform (3) is fixedly connected to the top of the path - finding and obstacle - avoiding vehicle (1). An arm fixing buckle (4) is provided on the blood collection platform (3). The arm fixing buckle (4) is provided with a first driving member, and the first driving member is used to drive the opening and closing of the arm fixing buckle (4). An image collector (5) is provided on the blood collection platform (3). The image collector (5) is used to collect an image of the relationship between the patient's arm and the position of the arm fixing buckle (4). The controller is used to obtain the image collected by the image collector (5), identify the position of the preset blood collection puncture point on the patient's arm, and judge whether the positional relationship between the blood collection puncture point and the arm fixing buckle (4) meets the blood collection fixation requirement. When the positional relationship between the patient's blood collection puncture point and the arm fixing buckle (4) meets the blood collection fixation requirement, the controller controls the arm fixing buckle (4) to close. When the positional relationship between the patient's blood collection puncture point and the arm fixing buckle (4) does not meet the blood collection fixation requirement, the controller controls the speaker (2) to broadcast a voice for guiding the patient's arm to move to a position that meets the blood collection fixation requirement.

2. The fixing device for blood collection in clinical examination of cardiology according to claim 1, characterized in that, The number of the arm fixing buckles (4) is at least 1. Airbag strips (6) are provided on the inner sides of the arm fixing buckles (4). An air pump (16) is provided on the path - finding and obstacle - avoiding vehicle (1). The airbag strips (6) are all communicated with the air pump (16).

3. The fixing device for blood collection in clinical examination of cardiology according to claim 2, characterized in that, A rotating plate (7) is rotatably connected to the blood collection platform (3). A second driving member is provided on the blood collection platform (3). The second driving member is used to drive the rotation of the rotating plate (7). An arc - shaped groove (8) is opened at one end of the rotating plate (7) away from the blood collection platform (3). The arc - shaped groove (8) has a radian for fitting the contour of the patient's arm. The image collector (5) is located in the arc - shaped groove (8), and a supplementary light (9) is provided in the arc - shaped groove (8). The controller is used to, after the arm fixing buckle (4) closes, control the second driving member to rotate so that the arc - shaped groove (8) fits at the blood collection puncture point on the patient's arm, and then control the image collector (5) to zoom in and collect an image of the blood collection puncture point. The controller is used to judge the clarity of the blood vessels in the image of the blood collection puncture point based on image recognition.

4. The fixing device for blood collection in clinical examination of cardiology according to claim 3, characterized in that, An electric heating wire is embedded in the arc - shaped groove (8). The controller is also used to, when the clarity of the blood vessels in the image of the blood collection puncture point is less than a preset value, start the electric heating wire to apply hot compress to the blood collection puncture point.

5. The fixing device for blood collection in clinical examination of cardiology according to claim 4, characterized in that, A pressure sensor (10) is fixedly connected to the airbag strip (6).

6. The fixing device for blood collection in clinical examination of cardiology according to claim 5, characterized in that, The controller is also used to, when the clarity of the blood vessels in the image of the blood collection puncture point is less than a preset value, increase the degree of inflation of the airbag strip (6) far from the end of the patient's arm through the air pump (16).

7. The fixing device for blood collection in clinical examination of cardiology according to claim 6, characterized in that, The preset blood collection puncture point positions include the wrist, the forearm and the elbow pit.

8. The fixing device for blood collection in clinical examination of cardiology according to claim 7, characterized in that, A display screen (11) and a microphone (12) are fixedly connected to the path - finding and obstacle - avoiding vehicle (1). The controller is signal - connected to a wireless module. The display screen (11) is used to play a demonstration video. The controller is also used to establish remote communication between medical staff and patients through the wireless module.

9. The fixing device for blood collection in clinical examination of cardiology according to claim 8, characterized in that, A handrest pad (13) is fixedly connected to the blood collection platform (3).

10. The fixing device for blood collection in clinical examination of cardiology according to claim 9, characterized in that, The pathfinding and obstacle-avoiding vehicle (1) is provided with a medical device storage box (14) and a blood sample storage box (15).

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