Heart rate feedback type flow control safety blood sampling scale

Abstract

The utility model discloses a heart rate feedback type flow control safety blood sampling scale. Comprising a scale body shell, a weighing and shaking unit arranged on the top surface of the scale body shell, an information checking unit fixed on the surface of the scale body shell and used for checking code scanning information, a sound prompter, a heart rate feedback flow control unit and a display arranged on the surface of the scale body shell, an information proofreading unit, a sound prompt unit, a heart rate feedback flow control unit and a pressure tube heat sealing assembly are integrated on the basis of an original blood sampling scale, and in the using process, firstly, an information barcode on a blood bag is scanned by means of the information proofreading unit, and verification and proofreading with system information are completed; in the blood sampling process, the heart rate and flow data are collected to calculate and control the safe flow in the pipe, after the blood sampling amount reaches the standard, a nurse is prompted to operate through the sound prompting unit, the pipe is automatically heat-sealed by means of the pipe pressing heat-sealing assembly, blood braid sample reserving is completed, and intelligentization, safety and high efficiency of blood sampling are achieved on the whole.

Description

Technical Field

[0001] The embodiment of the utility model belongs to the technical field of blood sampling scales, and more specifically, relates to a heart rate feedback type flow control safety blood sampling scale. Background Art

[0002] With the development of voluntary blood donation, the blood donation rate per thousand people has increased year by year, and the workload of blood collection nurses has gradually increased. At present, the blood collection scales commonly used in blood stations have functions such as weighing, mixing, and alarm, and a few have networking functions. During the blood collection process, the blood collection nurse first sets the target blood collection volume on the blood collection scale, and the blood collection scale shakes back and forth to fully mix the blood and the preservation fluid. After the target volume is collected, the blood collection scale issues an alarm prompt, and the nurse immediately closes the blood collection tube stop clamp and completes the needle removal operation. After the blood collection is completed, the nurse places the blood collection bag and the blood collection tube line on the heat sealer to complete the tube heat sealing and blood braid sample retention. During the blood collection process, nurses need to always pay attention to the alarm prompts of the blood collection scale to avoid excessive blood collection. At the same time, the heat sealing operation needs to be completed in time after the blood collection is completed. However, in actual work, when faced with a large amount of blood collection work, nurses may be overwhelmed and prone to operational errors; at the same time, due to differences in physical fitness of blood donors, nausea, vomiting and other abnormalities may occur during the blood donation process. In summary, proposing a safe, convenient and efficient blood collection scale is of great significance to the development of voluntary blood donation.

[0003] In order to solve the above technical problems, Chinese utility model patent CN205719211U discloses a dual-scanning blood sampling weighing instrument, including a tray, a weighing sensor, a touch screen, an industrial control mainboard, an analog acquisition control module, a heat sealing mechanism, a dual scanner and a base; the weighing sensor is installed on the base and is correspondingly arranged directly below the tray, and the weighing sensor is used to output the signal of the weight change of the blood bag sensed by the weighing and transmit it to the analog acquisition control module; the analog acquisition control module collects and calibrates the signal output by the weighing sensor and then sends it to the industrial control mainboard; the scanner transmits the data obtained after scanning to the industrial control mainboard, and the industrial control mainboard organizes the data scanned by the scanner and the data collected by the analog acquisition control module, and then uploads them to the background network database for management; the touch screen is used to set and display values. The dual-scanning blood sampling weighing instrument can achieve the purpose of using one blood sampling weighing instrument to simultaneously complete the work of dual scanning, weighing and heat sealing of the blood bag.

[0004] The above patented technology has simplified the operation process of nurses by integrating auxiliary devices, but there are still the following technical problems or optimization directions: (1) There are many reasons for nausea and vomiting in blood donors, among which there is a direct or indirect relationship with the heart rate and blood flow of blood donors. In the prior art, no technical solution is considered to slow down or eliminate the abnormal phenomenon of blood donors from the aspects of controlling the heart rate and blood flow of blood donors; (2) In the prior art, the abnormal suppression solution in (1) is not integrated into the blood collection integrated technology solution, so it should be further optimized and integrated from this aspect to improve the safety of the blood collection process; (3) In the above patented technology, the technical details of the heat sealing solution are not clearly given, so the heat sealing solution design should be carried out in the spirit of simplicity and effectiveness. Utility Model Content

[0005] In view of the above defects or improvement needs of the prior art, the utility model provides a heart rate feedback flow control safety blood collection scale, which integrates an information proofreading unit, a sound prompting unit, a heart rate feedback flow control unit, and a tube compression heat sealing component on the basis of the original blood collection scale. During use, the information proofreading unit is first used to scan the information barcode on the blood bag to complete the verification and proofreading with the system information. The blood collection process collects heart rate and flow data to calculate and control the maintenance of a safe flow in the tube. After the blood collection volume meets the standard, the voice prompting unit prompts the nurse to operate, and the tube compression heat sealing component is used to automatically heat seal the pipeline to complete the blood sample retention, thus realizing the intelligence, safety and efficiency of the blood collection process as a whole.

[0006] In order to achieve the above purpose, a heart rate feedback flow control safety blood collection scale is provided, comprising:

[0007] A weighing shell, a weighing and shaking unit arranged on the top surface of the weighing shell, an information checking unit fixed on the surface of the weighing shell and used for checking the scanned information, a sound prompter and a heart rate feedback flow control unit, and a display arranged on the surface of the weighing shell;

[0008] The weighing and shaking unit comprises a pressure sensor arranged on the top surface of the scale housing, a shaking mechanism arranged above the pressure sensor, and a carrying tray fixed on the top of the shaking mechanism for carrying the blood bag;

[0009] The heart rate feedback flow control unit comprises a lower base component fixedly connected to the surface of the scale body shell, an upper covering component rotatably connected to one side of the lower base component through a hinge, a pipeline alignment unit for straightening the blood sampling catheter, a thermal excitation component for adding thermal excitation to the blood sampling catheter, a flow characteristic detection component for thermally detecting the blood flow characteristics in the blood sampling catheter, and a tube compression heat sealing component for realizing cross-sectional area control and heat sealing of the blood sampling catheter; the upper covering component is rotatably covered on the top of the lower base component;

[0010] The thermal actuation component is located upstream of the flow characteristic detection component, the pipe compression heat sealing component is located downstream of the flow characteristic detection component, and the thermal actuation component and the flow characteristic detection component are located between the pipeline alignment unit.

[0011] Preferably, the pipeline correcting unit comprises:

[0012] A tensioning drive motor fixedly connected to the lower base assembly, a counter-rotating screw rod coaxially fixedly connected to the tensioning drive motor, a first clamping slider assembly and a second clamping slider assembly threadedly linearly connected to the counter-rotating screw rod, and a fourth clamping slider assembly and a third clamping slider assembly disposed in the upper cover assembly and respectively engaging with the first clamping slider assembly and the second clamping slider assembly;

[0013] The first clamping slider assembly and the second clamping slider assembly are both in driving connection with threads of different rotation directions on the surface of the counter-rotating screw rod;

[0014] The first clamping slider assembly, the second clamping slider assembly, the third clamping slider assembly and the fourth clamping slider assembly all include a slider body that maintains a linear transmission connection with the counter-rotating screw rod, a slide groove arranged in the slider body, a resistance push block that maintains a sliding connection in the slide groove and abuts against the blood collection catheter, and a compression spring arranged between the resistance push block and the bottom of the slide groove.

[0015] Preferably, the thermal actuation component comprises:

[0016] The outermost insulating shell, the heating wire and the overheat protection layer arranged on the inner side of the insulating shell in sequence from the outside to the inside, and the thermal conductive silicone grease arranged between the overheat protection layer and the insulating shell to improve the heat conduction efficiency; the inner side of the overheat protection layer constitutes an internal pipeline through hole;

[0017] The thermal excitation component is disposed in half at the upper covering component and the lower basic component, and forms a closed loop after the upper covering component and the lower basic component are covered.

[0018] Preferably, the flow characteristic detection component comprises:

[0019] An inner hollow shell, and a heat sensing probe disposed on the inner surface of the inner hollow shell and used for detecting the heat of blood in the blood sampling catheter;

[0020] The flow characteristic detection component is divided into two halves, namely, an upper covering component and a lower basic component, and forms a closed loop after the upper covering component and the lower basic component are covered.

[0021] Preferably, the pipe pressing and heat sealing assembly comprises:

[0022] A pressing base assembly fixedly arranged on the lower base assembly and a pressing active assembly arranged on the upper cover assembly;

[0023] The pressing base component and the pressing active component form facing extrusion stations after the upper covering component and the lower base component are covered, and the blood sampling catheter is placed between the facing extrusion stations.

[0024] Preferably, the pressed base assembly comprises:

[0025] A lower main body block fixedly connected to the lower basic assembly, a lower pressing opening arranged on the upper surface of the lower main body block, and a lower heating part arranged at the bottom of the lower pressing opening.

[0026] Preferably, the pressed active component comprises:

[0027] An upper main body block fixedly connected to the upper cover assembly, a sliding groove with an opening downwardly opened in the upper main body block, a pressing drive motor fixedly connected to the upper main body block, a pressing drive screw rod coaxially fixedly connected to the pressing drive motor in a horizontal direction, a pressing drive nut engaged with the pressing drive screw rod for linear transmission, a cross-link mechanism connected and arranged below the pressing drive nut, a sliding pressing block arranged below the cross-link mechanism and slidably connected to the sliding groove, an upper pressing opening arranged below the sliding pressing block, and an upper heating wire arranged on the top surface of the upper pressing opening.

[0028] In general, the above technical solutions conceived by the utility model can achieve the following beneficial effects compared with the prior art:

[0029] (1) The utility model is a heart rate feedback flow control safety blood sampling scale. On the basis of the original blood sampling scale, an information proofreading unit, a sound prompting unit, a heart rate feedback flow control unit, and a tube pressing and heat-sealing component are integrated. During use, the information proofreading unit is used to scan the information barcode on the blood bag to complete the verification and proofreading with the system information. During the blood sampling process, the heart rate and flow data are collected to calculate and control the safe flow in the tube. After the blood sampling volume reaches the standard, the sound prompting unit prompts the nurse to operate, and the tube pressing and heat-sealing component is used to automatically heat-seal the pipeline to complete the blood sampling. Overall, the blood sampling process is intelligent, safe, and efficient.

[0030] (2) The utility model is a heart rate feedback flow control safety blood sampling scale, and the heart rate feedback flow control unit is designed in detail. During use, the base component is folded open and the blood collection tube is pressed into it, and then the upper covering component is closed. The pipeline alignment unit inside the unit eliminates the pipeline bending state, thereby improving the subsequent measurement accuracy. Then, the upstream thermal excitation component is used to continuously apply constant power thermal excitation to the pipeline. On this basis, due to the effect of heart rate, the blood flow presents a state of fluctuating flow rate, and the speed of flow in the tube further causes the heat applied by thermal excitation to different liquid levels in the tube to be different. Then, the heat is monitored by the flow characteristic detection component, so as to further analyze the flow rate and heart rate, such as Figure 7 As shown; based on the flow and heart rate data, the flow control in the tube is achieved through the tube compression heat sealing component. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a right side overall structural schematic diagram of a heart rate feedback flow control safety blood sampling scale according to an embodiment of the utility model;

[0032] Figure 2 This is a left side overall structural schematic diagram of a heart rate feedback flow control safety blood sampling scale according to an embodiment of the utility model;

[0033] Figure 3 This is a schematic diagram of the internal structure of a heart rate feedback flow control unit of a heart rate feedback flow control safety blood sampling scale according to an embodiment of the utility model;

[0034] Figure 4 This is a schematic diagram of the overall cross-sectional structure of a thermal excitation component of a heart rate feedback type flow control safety blood sampling scale according to an embodiment of the utility model;

[0035] Figure 5 This is a schematic diagram of the overall cross-sectional structure of a flow characteristic detection component of a heart rate feedback flow control safety blood sampling scale according to an embodiment of the utility model;

[0036] Figure 6 This is a schematic diagram of the overall cross-sectional structure of a pressure tube heat-sealing assembly of a heart rate feedback type flow control safety blood sampling scale according to an embodiment of the utility model;

[0037] Figure 7 This is a schematic diagram of a characteristic signal sample of a flow characteristic detection component of a heart rate feedback flow control safety blood sampling scale according to an embodiment of the utility model.

[0038] In all the drawings, the same reference numerals represent the same technical features, specifically: 1-scale body shell, 2-weighing and shaking unit, 201-carrying tray, 202-shaking mechanism, 203-pressure sensor, 3-information proofreading unit, 4-sound prompter, 5-heart rate feedback flow control unit, 510-upper cover assembly, 520-lower base assembly, 530-hinge part, 540-pipeline alignment unit, 541-tensioning drive motor, 542-reverse rotation screw, 543-first clamping slider assembly, 544-second clamping slider assembly, 545-third clamping slider assembly, 546-fourth clamping slider assembly, 5461-slider body, 5462-resistance push block, 5463-compression spring, 550- Thermal excitation component, 551-overheat protection layer, 552-thermal conductive silicone grease, 553-heating wire, 554-insulating shell, 555-internal pipeline through hole, 560-flow characteristic detection component, 561-thermal sensing probe, 570-tube heat sealing component, 5710-pressing base component, 5711-lower main body block, 5712-lower heating part, 5713-lower pressing port, 5720-pressing active component, 5721-upper main body block, 5722-pressing drive motor, 5723-pressing drive screw, 5724-pressing transmission nut, 5725-cross connecting rod mechanism, 5726-sliding pressing block, 5727-upper heating wire, 5728-upper pressing port, 6-display, 7-blood collection catheter. DETAILED DESCRIPTION

[0039] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0041] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0042] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0043] like Figures 1 to 7 As shown, in an embodiment of the utility model, the heart rate feedback flow control safety blood sampling scale comprises:

[0044] A weighing body shell 1, a weighing and shaking unit 2 arranged on the top surface of the weighing body shell 1, an information checking unit fixed on the surface of the weighing body shell 1 and used for scanning code information checking, a sound prompter 4 and a heart rate feedback flow control unit, and a display 6 arranged on the surface of the weighing body shell 1;

[0045] The weighing and shaking unit 2 comprises a pressure sensor 203 disposed on the top surface of the scale housing 1, a shaking mechanism 202 disposed above the pressure sensor 203, and a carrying tray 201 fixed on the top of the shaking mechanism 202 for carrying a blood bag;

[0046] The heart rate feedback flow control unit 5 comprises a lower base component 520 fixedly connected to the surface of the scale housing 1, an upper covering component 510 rotatably connected to one side of the lower base component 520 via a hinge 530, a pipeline alignment unit 540 for straightening the blood sampling catheter, a thermal excitation component 550 for adding thermal excitation to the blood sampling catheter, a flow characteristic detection component 560 for thermally detecting the blood flow characteristics in the blood sampling catheter, and a tube compression heat sealing component 570 for realizing cross-sectional area control and heat sealing of the blood sampling catheter; the upper covering component 510 is rotatably covered on the lower base component 520;

[0047] The thermal actuation component 550 is located upstream of the flow characteristic detection component 560 , and the pipe compression heat sealing component 570 is located downstream of the flow characteristic detection component 560 . The thermal actuation component 550 and the flow characteristic detection component 560 are located between the pipeline alignment unit 540 .

[0048] In the embodiment of the utility model, an information proofreading unit, a sound prompting unit, a heart rate feedback flow control unit, and a tube compression heat sealing component are integrated on the basis of the original blood sampling scale. During use, the information proofreading unit is used to scan the information barcode on the blood bag to complete the verification and proofreading with the system information. The blood sampling process collects heart rate and flow data to calculate and control the safe flow in the tube. After the blood collection volume meets the standard, the nurse is prompted to operate through the sound prompting unit, and the tube compression heat sealing component is used to automatically heat seal the pipeline to complete the blood sampling. Overall, the blood collection process is made intelligent, safe, and efficient.

[0049] In the embodiment of the utility model, the heart rate feedback flow control unit is designed in detail. During use, the basic component is folded open and the blood collection tube line is pressed into it, and then the upper covering component is closed. The pipeline straightening unit inside the unit eliminates the pipeline bending state, thereby improving the subsequent measurement accuracy. Then, the upstream thermal excitation component is used to continuously apply constant power thermal excitation to the pipeline. On this basis, due to the effect of heart rate, the blood flow presents a state of fast and slow flow rate, and the speed of flow in the tube further causes the difference in heat applied to different liquid levels in the tube by thermal excitation. Then, the heat is monitored by means of the flow characteristic detection component, so as to further analyze the flow rate and heart rate, such as Figure 7 As shown; based on the flow and heart rate data, the flow control in the tube is achieved through the tube compression heat sealing component.

[0050] like Figure 3 As shown, in the embodiment of the present utility model, the pipeline correcting unit 540 includes:

[0051] A tensioning drive motor 541 fixedly connected to the lower base assembly 520, a counter-rotating screw 542 coaxially fixedly connected to the tensioning drive motor 541, a first clamping slider assembly 543 and a second clamping slider assembly 544 threadedly linearly connected to the counter-rotating screw, and a fourth clamping slider assembly 546 and a third clamping slider assembly 545 disposed in the upper cover assembly 510 and respectively engaging with the first clamping slider assembly 543 and the second clamping slider assembly 544;

[0052] The first clamping slider assembly 543 and the second clamping slider assembly 544 are both in driving connection with threads of different rotation directions on the surface of the counter-rotating screw rod 542;

[0053] The first clamping slider assembly 543, the second clamping slider assembly 544, the third clamping slider assembly 545 and the fourth clamping slider assembly 546 all include a slider body 5461 that maintains a linear transmission connection with the counter-rotating screw rod 542, a slide groove provided in the slider body 5461, a resisting push block 5462 that maintains a sliding connection in the slide groove and abuts against the blood sampling tube 7, and a compression spring 5463 provided between the resisting push block 5462 and the bottom of the slide groove;

[0054] like Figure 3 and Figure 4 As shown, in the embodiment of the present utility model, the thermal actuation component 550 includes:

[0055] The outermost insulating shell 554, the heating wire 553 and the overheat protection layer 551 arranged on the inner side of the insulating shell 554 from the outside to the inside, and the thermal conductive silicone grease 552 arranged between the overheat protection layer 551 and the insulating shell 554 for improving the heat conduction efficiency; the inner side of the overheat protection layer 551 forms an internal pipeline through hole 555;

[0056] The thermal actuation component 550 is disposed in half at the upper covering component 510 and the lower base component 520 , and forms a closed loop after the upper covering component 510 and the lower base component 520 are covered.

[0057] like Figure 5 As shown, in the embodiment of the present utility model, the flow characteristic detection component 560 includes:

[0058] An inner hollow shell, and a heat sensing probe 561 disposed on the inner surface of the inner hollow shell and used for detecting the heat of blood in the blood sampling catheter;

[0059] The flow characteristic detection component 560 is disposed in half at the upper covering component 510 and the lower base component 520 , and forms a closed loop after the upper covering component 510 and the lower base component 520 are covered.

[0060] like Figure 6 As shown, in the embodiment of the utility model, the pipe pressing heat sealing assembly 570 includes:

[0061] A pressing base assembly 5710 fixedly mounted on the lower base assembly 520 and a pressing active assembly 5720 mounted on the upper cover assembly 510;

[0062] The pressing base component 5710 and the pressing active component 5720 form facing extrusion stations after the upper covering component 510 and the lower base component 520 are covered, and the blood collection catheter is placed between the facing extrusion stations.

[0063] like Figure 6As shown, in the embodiment of the present utility model, the pressing base assembly 5710 includes:

[0064] A lower main body block 5711 fixedly connected to the lower basic assembly 520 , a lower pressing opening 5713 arranged on the upper surface of the lower main body block 5711 , and a lower heating portion 5712 arranged at the bottom of the lower pressing opening 5713 .

[0065] like Figure 6 As shown, in the embodiment of the present utility model, the pressing active component 5720 includes:

[0066] An upper main body block 5721 fixedly connected to the upper cover assembly 510, a sliding groove opened downward on the upper main body block 5721, a pressing drive motor 5722 fixedly connected to the upper main body block 5721, a pressing drive screw rod 5723 coaxially fixedly connected to the pressing drive motor 5722 in a horizontal direction, a pressing drive nut 5724 engaged with the pressing drive screw rod 5723 for linear transmission, a cross-link mechanism 5725 connected and arranged below the pressing drive nut 5724, a sliding pressing block 5726 arranged below the cross-link mechanism 5725 and slidably connected to the sliding groove, an upper pressing opening 5728 arranged below the sliding pressing block 5726, and an upper heating wire 5727 arranged on the top surface of the upper pressing opening 5728.

[0067] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application shall be included in the protection scope of the present application. The above are only preferred implementations of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and variations can be made without departing from the technical principles of the present application, and these improvements and variations should also be regarded as the protection scope of the present application.

Claims

1. A heart rate feedback flow control safety blood sampling scale, characterized in that: include: A weighing body shell (1), a weighing and shaking unit (2) arranged on the top surface of the weighing body shell (1), an information checking unit fixed to the surface of the weighing body shell (1) and used for checking the scanned information, a sound prompter (4) and a heart rate feedback flow control unit, and a display (6) arranged on the surface of the weighing body shell (1); The weighing and shaking unit (2) comprises a pressure sensor (203) arranged on the top surface of the scale housing (1), a shaking mechanism (202) arranged above the pressure sensor (203), and a carrying tray (201) fixed on the top of the shaking mechanism (202) for carrying a blood bag; The heart rate feedback flow control unit (5) comprises a lower base component (520) fixedly connected to the surface of the scale housing (1), an upper covering component (510) rotatably connected to one side of the lower base component (520) via a hinge (530), a pipeline alignment unit (540) for straightening the blood sampling catheter, which is separately arranged in the lower base component (520) and the upper covering component (510), a thermal excitation component (550) for adding thermal excitation to the blood sampling catheter, a flow characteristic detection component (560) for thermally detecting the blood flow characteristics in the blood sampling catheter, and a tube compression heat sealing component (570) for achieving cross-sectional area control and heat sealing of the blood sampling catheter; the upper covering component (510) is rotatably covered on the top of the lower base component (520); The thermal actuation component (550) is located upstream of the flow characteristic detection component (560), the pipe compression heat sealing component (570) is located downstream of the flow characteristic detection component (560), and the thermal actuation component (550) and the flow characteristic detection component (560) are located between the pipeline alignment unit (540).

2. A heart rate feedback flow control safety blood sampling scale according to claim 1, characterized in that: The pipeline correcting unit (540) comprises: A tensioning drive motor (541) fixedly connected to the lower base assembly (520), a counter-rotating screw rod (542) coaxially fixedly connected to the tensioning drive motor (541), a first clamping slider assembly (543) and a second clamping slider assembly (544) threaded linearly connected to the counter-rotating screw rod, and a fourth clamping slider assembly (546) and a third clamping slider assembly (545) arranged in the upper covering assembly (510) and respectively engaging with the first clamping slider assembly (543) and the second clamping slider assembly (544); The first clamping slider assembly (543) and the second clamping slider assembly (544) are both in driving connection with threads of different rotation directions on the surface of the counter-rotating screw rod (542); The first clamping slider assembly (543), the second clamping slider assembly (544), the third clamping slider assembly (545) and the fourth clamping slider assembly (546) all include a slider body (5461) that maintains a linear transmission connection with the counter-rotating screw rod (542), a slide groove provided in the slider body (5461), a resistance push block (5462) that maintains a sliding connection in the slide groove and abuts against the blood collection tube (7), and a compression spring (5463) provided between the resistance push block (5462) and the bottom of the slide groove.

3. A heart rate feedback flow control safety blood sampling scale according to claim 1, characterized in that: The thermal actuation component (550) comprises: An insulating outer shell (554) located at the outermost layer, a heating wire (553) and an overheat protection layer (551) arranged on the inner side of the insulating outer shell (554) in sequence from the outside to the inside, and a thermal conductive silicone grease (552) arranged between the overheat protection layer (551) and the insulating outer shell (554) for improving the heat conduction efficiency; an internal pipeline through hole (555) is formed on the inner side of the overheat protection layer (551); The thermal actuation component (550) is disposed in half on the upper covering component (510) and the lower base component (520), and forms a closed loop after the upper covering component (510) and the lower base component (520) are covered.

4. A heart rate feedback flow control safety blood sampling scale according to claim 1, characterized in that: The flow characteristic detection component (560) comprises: An inner hollow shell, and a heat sensing probe (561) disposed on the inner surface of the inner hollow shell and used for detecting the heat of blood in the blood sampling catheter; The flow characteristic detection component (560) is disposed in half on the upper covering component (510) and the lower base component (520), and forms a closed loop after the upper covering component (510) and the lower base component (520) are covered.

5. A heart rate feedback flow control safety blood sampling scale according to claim 1, characterized in that: The pipe pressing and heat sealing assembly (570) comprises: A pressing base component (5710) fixedly arranged on the lower base component (520) and a pressing active component (5720) arranged on the upper cover component (510); The pressing base component (5710) and the pressing active component (5720) form facing extrusion stations after the upper covering component (510) and the lower base component (520) are covered, and the blood collection catheter is placed between the facing extrusion stations.

6. A heart rate feedback flow control safety blood sampling scale according to claim 5, characterized in that: The pressed base assembly (5710) comprises: A lower main body block (5711) fixedly connected to the lower basic assembly (520), a lower pressing opening (5713) provided on the upper surface of the lower main body block (5711), and a lower heating portion (5712) provided at the bottom of the lower pressing opening (5713).

7. A heart rate feedback flow control safety blood sampling scale according to any one of claims 5 or 6, characterized in that: The pressed active component (5720) comprises: An upper main body block (5721) fixedly connected to the upper cover assembly (510), a sliding groove opened downwardly on the upper main body block (5721), a pressing drive motor (5722) fixedly connected to the upper main body block (5721), a pressing drive screw rod (5723) coaxially fixedly connected to the pressing drive motor (5722) in a horizontal direction, a pressing drive nut (5724) engaged with the pressing drive screw rod (5723) for linear transmission, a cross-link mechanism (5725) connected and arranged below the pressing drive nut (5724), a sliding pressing block (5726) arranged below the cross-link mechanism (5725) and slidably connected to the sliding groove, an upper pressing opening (5728) arranged below the sliding pressing block (5726), and an upper heating wire (5727) arranged on the top surface of the upper pressing opening (5728).

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