A method and system for regulating blood expelling parameters based on pressure detection

Abstract

The present application relates to the fields of medical treatment and electronic technology, and discloses a blood driving parameter adjustment method based on pressure detection, which comprises the following steps: arranging a plurality of blood driving areas along the distal end to the proximal end direction of a human limb, and arranging pressure sensors and flow rate sensors at the blood driving areas; in the process of sequentially pressing the blood driving areas, collecting the pressing pressure in the blood driving areas by the pressure sensors and collecting the blood flow rate in the blood vessels of the blood driving areas by the flow rate sensors; judging whether the pressing pressure and the blood flow rate are synchronous; when the pressing pressure and the blood flow rate are not synchronous, judging that the blood in the blood vessels has not been driven, and adjusting the pressing pressure on the blood driving areas according to the different types of asynchronization between the pressing pressure and the blood flow rate; when the pressing pressure and the blood flow rate are synchronous, judging that the blood in the blood vessels has been driven, and adjusting the pressing pressure on the blood driving areas and the pressure maintaining duration. The present application can solve the problem that the blood is not driven even if the pressure meets the standard.

Description

Technical Field

[0001] This invention belongs to the fields of medical and electronic technology, specifically relating to a method and system for adjusting blood flow parameters based on pressure detection. Background Technology

[0002] Limb vasoconstriction is a crucial step in trauma emergency care, orthopedic surgery, and resuscitation from hemorrhagic shock. Its core objective is to drive blood from the distal extremities to the core area of ​​the torso through external physical compression, prioritizing blood supply to vital organs such as the heart and brain. Existing vasoconstriction systems typically employ airbag pressurization, using pressure sensors to monitor the pressure applied to the limb by the airbag in real time. When the pressure reaches a preset threshold, vasoconstriction is considered complete. For example, patent CN2152509Y discloses an automatic vasoconstriction and tourniquet that uses multiple airbags to sequentially pressurize from the distal to the proximal end. Patent CN203059822U discloses a hemostat with an intelligent control system that uses pressure sensors to control inflation, deflation, and pressure maintenance.

[0003] However, achieving the target pressure does not equate to effectively expelling blood. Due to significant individual differences in vascular elasticity, limb circumference, blood pressure levels, and vascular patency among different patients, even if the airbag pressure reaches the preset value, situations may arise such as blood vessels collapsing due to external pressure without blood being squeezed out, blood clots or spasms in the blood vessels causing blood flow obstruction, or pressure acting on bones or muscles rather than blood vessels. In these cases, the pressure sensor may show that the pressure has reached the target, but the blood has not actually been driven towards the proximal end.

[0004] To address the aforementioned issues, some existing technologies attempt to introduce blood flow monitoring methods. For example, patent CN101156799A discloses a self-controlled tourniquet that integrates a Doppler vascular detector into the tourniquet. It determines whether hemostasis has been completed by detecting the presence or absence of blood flow signals. However, this solution only achieves binary judgment, i.e., determining whether there is blood flow, and its application scenario is to block blood flow, rather than pushing blood back to the torso.

[0005] Therefore, existing technologies lack the ability to address the issue of pressure reaching the target but blood not being activated. Summary of the Invention

[0006] This invention provides a method and system for adjusting blood flow parameters based on pressure detection, the main purpose of which is to solve the problem that the blood is not driven even when the pressure reaches the target.

[0007] To achieve the above objectives, the present invention provides a method for adjusting hemostatic parameters based on pressure detection, comprising: Multiple blood-driving zones are set along the direction from the distal to the proximal end of the human limb, and pressure sensors and flow rate sensors are arranged in multiple blood-driving zones. During the sequential squeezing of the blood-draining area, the squeezing pressure in the blood-draining area is collected by the pressure sensor, and the blood flow velocity in the blood vessels in the blood-draining area is collected by the flow velocity sensor. Determine whether the squeezing pressure and the blood flow rate are synchronized; When the squeezing pressure and the blood flow rate are out of sync, it is determined that the blood in the blood vessel is not being driven, so as to adjust the squeezing pressure on the blood-driving area according to the type of asynchrony between the squeezing pressure and the blood flow rate; When the squeezing pressure is synchronized with the blood flow rate, it is determined that the blood in the blood vessel has been driven, so as to adjust the squeezing pressure and the holding pressure duration on the blood-driving area.

[0008] Optionally, determining whether the squeezing pressure and the blood flow rate are synchronized includes: Identify the pressure change trend corresponding to the squeezing pressure and the flow rate change trend corresponding to the blood flow rate, respectively. Determine whether the pressure change trend is consistent with the flow rate change trend; When the pressure change trend is consistent with the flow rate change trend, it is determined that the squeezing pressure is synchronized with the blood flow rate; When the pressure change trend is inconsistent with the flow rate change trend, it is determined that the squeezing pressure and the blood flow rate are out of sync.

[0009] Optionally, identifying the pressure change trend corresponding to the extrusion pressure includes: Calculate the pressure difference between the current extrusion pressure and the previous extrusion pressure. Calculate the rate of change of the pressure difference relative to the extrusion pressure at the previous moment; Obtain the range of rate of change; When the pressure change rate falls within the range of the change rate, the pressure change trend corresponding to the extrusion pressure is determined to be a constant trend. When the pressure change rate is lower than the change rate range, the pressure change trend corresponding to the extrusion pressure is determined to be a decreasing trend; When the pressure change rate is higher than the change rate range, the pressure change trend corresponding to the extrusion pressure is determined to be an increasing trend.

[0010] Optionally, obtain the range of rates of change, including: Collect historical compression pressures after airbag inflation at different historical stages; The rate of change range is determined based on the historical data on the rate of change of extrusion pressure.

[0011] Optionally, pressure sensors and flow rate sensors are arranged at multiple blood-driving zones, including: Pressure sensors and flow sensors are deployed on the inner wall of the limb in multiple blood-driving zones.

[0012] Optionally, the pressure sensor is used to collect the squeezing pressure in the blood-dripping area, including: When the air pump inflates the airbag, the pressure sensor collects the squeezing pressure on the human limb during and after the airbag expands in the blood-driving area.

[0013] Optionally, the blood flow velocity within the blood vessels in the blood-dripping area is acquired via the flow velocity sensor, including: The flow rate sensors in each blood-driving zone are synchronized with the pressure sensors to collect the blood flow rate within the blood vessels.

[0014] Optionally, adjusting the squeezing pressure on the blood-dripping area according to the type of asynchrony between the squeezing pressure and the blood flow rate includes: When the pressure change trend is increasing and the flow rate change trend is constant, the inflation rate of the air pump to the air bag is slowed down to adjust the squeezing pressure on the blood-driving area. When the pressure change trend is increasing and the flow rate change trend is decreasing, the air pump is stopped from inflating the airbag to adjust the squeezing pressure on the blood-dripping area. When the pressure change trend is constant and the flow rate change trend is decreasing, the squeezing pressure on the blood-driving area is reduced.

[0015] Optionally, adjusting the compression pressure and holding time on the blood-draining area includes: When the synchronous type is characterized by both increasing pressure and increasing flow rate, the current adjustment trajectory of the squeezing pressure on the blood-draining area is maintained, and the pressure holding duration is extended. When the synchronous type is characterized by both constant pressure and constant flow rate, the squeezing pressure on the blood-dripping area is maintained, and the pressure holding time is shortened.

[0016] To achieve the above objectives, the present invention provides a blood-dripping parameter adjustment system based on pressure detection, comprising: The sensor arrangement module is used to set up multiple blood-driving zones along the distal to proximal direction of the human limb, and to arrange pressure sensors and flow rate sensors in the multiple blood-driving zones. The data acquisition module is used to acquire the compression pressure in the blood-expelling area through the pressure sensor and the blood flow velocity in the blood vessels in the blood-expelling area through the flow velocity sensor during the sequential compression process of the blood-expelling area. A synchronization judgment module is used to determine whether the squeezing pressure and the blood flow rate are synchronized; The pressure regulation module is used to determine that the blood in the blood vessel is not driven when the squeezing pressure and the blood flow rate are not synchronized, so as to adjust the squeezing pressure on the blood-driving area according to the type of asynchrony between the squeezing pressure and the blood flow rate. The time adjustment module is used to determine that the blood in the blood vessel has been driven when the squeezing pressure is synchronized with the blood flow rate, so as to adjust the squeezing pressure and the holding pressure duration of the blood driving area.

[0017] Compared to the problems described in the background art, this invention addresses the issue by arranging pressure and flow sensors at multiple blood-driving zones to collect pressure and flow data. This data is used to prepare data for subsequent determination of whether blood is not being driven. Furthermore, this invention determines whether the squeezing pressure and the blood flow rate are synchronized, thus indicating whether the flow rate changes with the pressure. If the flow rate does not change with the pressure, it means the blood is not being effectively driven. Moreover, this invention adjusts the squeezing pressure on the blood-driving zone based on the type of asynchrony between the squeezing pressure and the blood flow rate. After determining that the blood is not being effectively driven, this invention resolves the problem of insufficient pressure but ineffective blood driving. Therefore, this invention can solve the problem of insufficient pressure but ineffective blood driving. Attached Figure Description

[0018] Figure 1 This is a flowchart illustrating a method for adjusting hemostatic parameters based on pressure detection, provided in an embodiment of the present invention. Figure 2 A schematic diagram of the blood-expelling region in a blood-expelling parameter adjustment method based on pressure detection provided in an embodiment of the present invention; Figure 3 A schematic diagram of hemolytic parameters for a hemolytic parameter adjustment method based on pressure detection provided in an embodiment of the present invention; Figure 4 A schematic diagram of a hemolytic device for adjusting hemolytic parameters based on pressure detection, according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the internal structure of a blood-expelling device for a blood-expelling parameter adjustment method based on pressure detection, according to an embodiment of the present invention. Figure 6 A schematic diagram of the control flow of a blood-dripping parameter adjustment method based on pressure detection provided in an embodiment of the present invention; Figure 7 A functional block diagram of a blood-dripping parameter adjustment system based on pressure detection provided in an embodiment of the present invention; Figure 8A schematic diagram of a computer device for adjusting blood-dripping parameters based on pressure detection, according to an embodiment of the present invention; The objectives, features, and advantages of this invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0020] This application provides a method for adjusting hemotropic parameters based on pressure detection. The executing entity of this method includes, but is not limited to, at least one electronic device configured to execute the method provided in this application, such as a server or a terminal. In other words, the method for adjusting hemotropic parameters based on pressure detection can be executed by software or hardware installed on a terminal device or a server device. The server includes, but is not limited to, a single server, a server cluster, a cloud server, or a cloud server cluster.

[0021] Reference Figure 1 The diagram shown is a flowchart illustrating a method for adjusting hemotropic parameters based on pressure detection according to an embodiment of the present invention. In this embodiment, the method for adjusting hemotropic parameters based on pressure detection includes: S1. Multiple blood-driving zones are set along the direction from the distal to the proximal end of the human limb, and pressure sensors and flow rate sensors are arranged in the multiple blood-driving zones.

[0022] This invention provides a solution by arranging pressure sensors and flow sensors at multiple blood-driving zones to collect pressure and flow data, thus preparing data for subsequent determination of whether blood is not being driven.

[0023] In one embodiment of the present invention, the arrangement of pressure sensors and flow sensors at multiple blood-driving areas includes: deploying pressure sensors and flow sensors on the inner wall of airbags at multiple blood-driving areas facing the human limb.

[0024] The blood-driving area refers to multiple independent areas on the human limb that are segmented to compress blood vessels and drive blood flow. The airbag is an inflatable component that generates pressure by inflation, which acts on the limb surface to compress blood vessels and drive blood flow. The inner wall is the inner wall of the airbag on the side of the human limb that is close to the skin. The flow sensor can measure the blood flow velocity of subcutaneous blood vessels on the limb surface, such as an ultrasonic Doppler blood flow sensor and a laser Doppler flow velocity sensor.

[0025] See Figure 2 The diagram shown is a schematic representation of the hemolytic region in a hemolytic parameter adjustment method based on pressure detection according to an embodiment of the present invention. Figure 2 In the middle, from top to bottom, are the finger blood-driving area, palm blood-driving area, forearm blood-driving area, forearm blood-driving area, upper arm blood-driving area, and manual tourniquet. The pressure is gradually increased from A to E. When the pressure at A reaches the set value, then pressure is increased at B, C, D, and E.

[0026] See Figure 3 The diagram shown illustrates the hemolytic parameters of a hemolytic parameter adjustment method based on pressure detection, according to an embodiment of the present invention. Figure 3 After placing the patient's limb inside the sleeve, the user switches to automatic mode using the physical buttons on the interface. The set pressure, working time / remaining time, and interval time / remaining time are then adjusted sequentially using the physical buttons. Clicking the automatic start / pause button puts the device into cycle mode. The working time display continuously counts down, the air pump operates, and the airbag inside the sleeve gradually inflates and pressurizes from the distal to the proximal end of the limb. The working pressure on the screen gradually increases to the set pressure and maintains that pressure value. The set time / remaining time display begins to count down. Once the working time / remaining time display reaches 0, the interval period begins, and the interval time / remaining time display gradually decreases while the working time display value continues to increase. At this point, the working time / remaining time display automatically returns to the set value. After a set time, once the interval / remaining time screen reaches 0, the blood-inducing device automatically inflates, gradually increasing the working pressure to the set pressure value. The set working time / remaining time then begins to count down, repeating this cycle. In automatic mode, the set pressure and set time can be adjusted sequentially using physical buttons. Clicking the automatic start / pause button maintains the device pressure, continues timing the working time, and stops the working time / remaining time value from decreasing. After use, clicking the automatic cycle stop button causes the airbag inside the sleeve to gradually deflate, gradually decreasing the working pressure value on the screen to 0. The working time screen retains the previously recorded working time, and the values ​​on the set pressure screen, set time / remaining time screen, and set interval / remaining time screen also remain at the previously set values.

[0027] See Figure 4 The diagram shown is a schematic representation of a hemolytic device for adjusting hemolytic parameters based on pressure detection, according to an embodiment of the present invention. Figure 4 In the middle, the left side represents the sleeve, and the right side is the blood-draining device that controls the airbag pressure and the duration of pressure holding.

[0028] See Figure 5 The image shown is a schematic diagram of the internal structure of a hemolytic device according to an embodiment of the present invention, which provides a method for adjusting hemolytic parameters based on pressure detection. Figure 5 In the middle, the left side represents the sleeve, while the right side shows the detailed internal structure of the blood-draining device that controls the airbag pressure and the duration of pressure holding.

[0029] S2. During the sequential squeezing of the blood-draining area, the squeezing pressure in the blood-draining area is collected by the pressure sensor, and the blood flow velocity in the blood vessels in the blood-draining area is collected by the flow velocity sensor.

[0030] It should be noted that the sequential squeezing process of the blood-dripping area mentioned here refers to the process of squeezing the blood vessels from the distal end to the proximal end in turn.

[0031] In one embodiment of the present invention, the step of collecting the compression pressure in the blood-expelling area through the pressure sensor includes: when the air pump inflates the airbag, collecting the compression pressure on the human limb in the blood-expelling area when the airbag expands and after expansion through the pressure sensor.

[0032] It should be noted that during inflation, the pressure gradually increases, causing the airbag to expand. When the pressure gradually increases to the target pressure and stabilizes, it means that the inflation has stopped.

[0033] In one embodiment of the present invention, the step of collecting the blood flow velocity in the blood vessels in the blood-draining area through the flow velocity sensor includes: controlling the flow velocity sensors in each blood-draining area to collect the blood flow velocity in the blood vessels in sync with the pressure sensor.

[0034] It should be noted that when comparing whether the pressure and flow rate are synchronized, they must belong to the same blood-driving area and be at the same time. Therefore, the flow rate sensor needs to be synchronized with the pressure sensor to collect the blood flow rate in the blood vessel under the premise of synchronization with the pressure sensor.

[0035] See Figure 6 The diagram shown is a control flow diagram of a method for adjusting hemostatic parameters based on pressure detection according to an embodiment of the present invention. Figure 6 In the process, the data collected by the pressure sensor and the flow rate sensor need to be transmitted to the intelligent controller in the blood pumping device. The intelligent controller will determine whether the two are synchronized and provide suggestions for adjusting the pressure and time.

[0036] S3. Determine whether the squeezing pressure and the blood flow rate are synchronized.

[0037] In this embodiment of the invention, the flow rate is determined by whether the squeezing pressure and the blood flow rate are synchronized. If the flow rate does not change with the pressure, it indicates that the blood is not being effectively driven.

[0038] In one embodiment of the present invention, determining whether the squeezing pressure and the blood flow rate are synchronized includes: identifying the pressure change trend corresponding to the squeezing pressure and the flow rate change trend corresponding to the blood flow rate; determining whether the pressure change trend and the flow rate change trend are consistent; when the pressure change trend and the flow rate change trend are consistent, determining that the squeezing pressure and the blood flow rate are synchronized; when the pressure change trend and the flow rate change trend are inconsistent, determining that the squeezing pressure and the blood flow rate are not synchronized.

[0039] In another embodiment of the present invention, identifying the pressure change trend corresponding to the extrusion pressure includes: calculating the pressure difference between the current extrusion pressure and the previous extrusion pressure; calculating the pressure change rate of the pressure difference relative to the previous extrusion pressure; obtaining a change rate range; determining that the pressure change trend corresponding to the extrusion pressure is unchanged when the pressure change rate is within the change rate range; determining that the pressure change trend corresponding to the extrusion pressure is decreasing when the pressure change rate is lower than the change rate range; and determining that the pressure change trend corresponding to the extrusion pressure is increasing when the pressure change rate is higher than the change rate range.

[0040] Optionally, the formula for calculating the pressure change rate of the pressure difference relative to the extrusion pressure at the previous moment is: absolute value of the pressure difference / extrusion pressure at the previous moment. Further, when the pressure change rate is lower than the change rate range, it means the pressure change rate is lower than the minimum value of the change rate range. Further, when the pressure change rate is higher than the change rate range, it means the pressure change rate is higher than the maximum value of the change rate range.

[0041] It should be noted that the principle of identifying the flow rate change trend corresponding to the blood flow rate is similar to the principle of identifying the pressure change trend corresponding to the squeezing pressure, and will not be elaborated here.

[0042] In another embodiment of the present invention, obtaining the rate of change range includes: collecting historical compression pressures after airbag inflation in historical periods; and determining the rate of change range based on the rate of change data of the historical compression pressures.

[0043] Optionally, the process of determining the rate of change interval based on the historical extrusion pressure change rate data is as follows: the historical extrusion pressure collected during the historical experiment stage is a series of pressure values ​​collected after the airbag has expanded and reached a stable pressure stage, determined by human intervention. The minimum and maximum rate of change of these pressures are taken, and the interval formed by the two is the rate of change interval.

[0044] S4. When the squeezing pressure and the blood flow rate are not synchronized, it is determined that the blood in the blood vessel is not driven, so as to adjust the squeezing pressure on the blood-driving area according to the type of asynchrony between the squeezing pressure and the blood flow rate.

[0045] This invention addresses the problem of insufficient blood flow despite adequate pressure by adjusting the pressure applied to the blood-driving area based on the asynchronous nature of the compression pressure and the blood flow rate.

[0046] In one embodiment of the present invention, adjusting the squeezing pressure on the blood-driving area according to the asynchronous type between the squeezing pressure and the blood flow rate includes: when the asynchronous type is characterized by an increasing pressure trend and a constant flow rate trend, slowing down the inflation rate of the air pump to the air bag to adjust the squeezing pressure on the blood-driving area; when the asynchronous type is characterized by an increasing pressure trend and a decreasing flow rate trend, stopping the inflation of the air pump to the air bag to adjust the squeezing pressure on the blood-driving area; and when the asynchronous type is characterized by a constant pressure trend and a decreasing flow rate trend, reducing the squeezing pressure on the blood-driving area.

[0047] Optionally, when the situation falls under the asynchronous type where the pressure change trend is increasing and the flow rate change trend is constant, slowing down the inflation rate of the air pump into the cuff to adjust the compression pressure on the blood-driving area indicates that the compression is nearing saturation and the blood vessels are about to be compressed and blocked. At this point, slowing down the inflation rate prevents rapid pressurization and avoids excessive pressure leading to blood flow obstruction. The slowing rate is calculated based on the minimum adjustment interval. For example, if the original inflation rate was 5 mmHg pressure increase every 0.1 seconds and the minimum pressure increase interval was 1 mmHg, then the pressure increase every 0.1 seconds would be reduced from 5 mmHg to 4 mmHg. Furthermore, when the situation falls under the asynchronous type where the pressure change trend is increasing and the flow rate change trend is decreasing, stopping the inflation rate of the air pump into the cuff to adjust the compression pressure on the blood-driving area indicates that the pressure is still... The pressure is rising, but the blood flow velocity is decreasing, indicating that the blood vessels may have been compressed and narrowed. Continuing to increase pressure will directly block blood flow, so it is necessary to stop the air pump from inflating the airbag. Furthermore, the situation where the pressure change trend is constant and the flow velocity change trend is increasing is not described here, because the probability of this situation is extremely low. When the pressure no longer increases but stabilizes, the flow velocity cannot continue to increase. Furthermore, when the situation is a asynchronous type where the pressure change trend is constant and the flow velocity change trend is decreasing, reducing the squeezing pressure on the blood-dripping area means that the airbag squeezing pressure remains stable, but the blood flow velocity in the subcutaneous blood vessels is continuously decreasing, indicating that the blood supply to the blood vessels is gradually deteriorating under the current pressure. Continuing to increase pressure will further compress the blood vessels, so the pressure needs to be reduced. When adjusting, the pressure is still reduced according to the minimum adjustment interval.

[0048] S5. When the squeezing pressure is synchronized with the blood flow rate, it is determined that the blood in the blood vessel has been driven, so as to adjust the squeezing pressure and the holding pressure duration on the blood driving area.

[0049] In one embodiment of the present invention, adjusting the squeezing pressure and holding time of the blood-expelling region includes: when the pressure change trend is increasing and the flow rate change trend is increasing, maintaining the current adjustment trajectory of the squeezing pressure of the blood-expelling region and extending the holding time; when the pressure change trend is unchanged and the flow rate change trend is unchanged, maintaining the squeezing pressure of the blood-expelling region and shortening the holding time.

[0050] The current adjustment trajectory refers to the pressure control trajectory from the initial pressurization that causes the airbag to inflate to the later stage that allows the airbag to stabilize.

[0051] Optionally, when the synchronous type involves both increasing pressure and increasing flow rate, the current adjustment trajectory of the squeezing pressure on the expelling area is maintained, and the holding time is extended. This indicates that the current expelling effect is good, and the pressure is increased in the current manner without changing the adjustment rhythm. The holding time is also extended to allow the blood to be more fully emptied towards the heart. Furthermore, when the synchronous type involves both unchanged pressure and unchanged flow rate, the squeezing pressure on the expelling area is maintained, and the holding time is shortened. This indicates that the squeezing pressure and blood flow velocity remain stable, suggesting that the expelling has entered a stable and completed state, and the blood in the blood vessels has been basically emptied. Therefore, the current pressure is maintained without change, and the holding time is shortened to avoid unnecessary prolonged squeezing.

[0052] like Figure 7 The diagram shown is a functional block diagram of a blood-dripping parameter adjustment system based on pressure detection according to the present invention.

[0053] The pressure-detection-based hemotropic parameter adjustment system 700 described in this invention can be installed in an electronic device. Depending on the functions implemented, the pressure-detection-based hemotropic parameter adjustment system includes a sensor arrangement module 701, a data acquisition module 702, a synchronization judgment module 703, a pressure adjustment module 704, and a time adjustment module 705. The module described in this invention can also be referred to as a unit, which refers to a series of computer program segments that can be executed by the processor of an electronic device and can perform a fixed function, and are stored in the memory of the electronic device.

[0054] In this embodiment of the invention, the functions of each module / unit are as follows: The sensor arrangement module 701 is used to set up multiple blood-driving zones along the distal to proximal direction of the human limb, and to arrange pressure sensors and flow rate sensors in the multiple blood-driving zones. The data acquisition module 702 is used to acquire the compression pressure in the blood-draining area through the pressure sensor and the blood flow velocity in the blood vessels in the blood-draining area through the flow velocity sensor during the sequential compression of the blood-draining area. The synchronization judgment module 703 is used to determine whether the squeezing pressure and the blood flow rate are synchronized. The pressure regulating module 704 is used to determine that the blood in the blood vessel is not driven when the squeezing pressure and the blood flow rate are not synchronized, so as to adjust the squeezing pressure on the blood-driving area according to the type of asynchrony between the squeezing pressure and the blood flow rate. The time adjustment module 705 is used to determine that the blood in the blood vessel has been driven when the squeezing pressure is synchronized with the blood flow rate, so as to adjust the squeezing pressure and the holding pressure duration of the blood driving area.

[0055] In detail, the modules in the pressure detection-based blood flow parameter adjustment system 700 described in this embodiment of the invention employ the same methods as described above during use. Figure 1 The technique is the same as the pressure detection-based blood-dripping parameter adjustment method described in the article, and can produce the same technical effect, so it will not be repeated here.

[0056] In one embodiment, a computer device is provided, which may be a server or a client, and its internal structure diagram may be as follows: Figure 8 As shown, the computer device includes a processor, memory, network interface, and database connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile and / or volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface is used for communication with external clients via a network connection. When the computer program is executed by the processor, it implements functions or steps on the server or client side of a pressure-detection-based blood flow parameter adjustment method.

[0057] In one embodiment, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to perform the following steps: Multiple blood-driving zones are set along the direction from the distal to the proximal end of the human limb, and pressure sensors and flow rate sensors are arranged in multiple blood-driving zones. During the sequential squeezing of the blood-draining area, the squeezing pressure in the blood-draining area is collected by the pressure sensor, and the blood flow velocity in the blood vessels in the blood-draining area is collected by the flow velocity sensor. Determine whether the squeezing pressure and the blood flow rate are synchronized; When the squeezing pressure and the blood flow rate are out of sync, it is determined that the blood in the blood vessel is not being driven, so as to adjust the squeezing pressure on the blood-driving area according to the type of asynchrony between the squeezing pressure and the blood flow rate; When the squeezing pressure is synchronized with the blood flow rate, it is determined that the blood in the blood vessel has been driven, so as to adjust the squeezing pressure and the holding pressure duration on the blood-driving area.

[0058] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor: Multiple blood-driving zones are set along the direction from the distal to the proximal end of the human limb, and pressure sensors and flow rate sensors are arranged in multiple blood-driving zones. During the sequential squeezing of the blood-draining area, the squeezing pressure in the blood-draining area is collected by the pressure sensor, and the blood flow velocity in the blood vessels in the blood-draining area is collected by the flow velocity sensor. Determine whether the squeezing pressure and the blood flow rate are synchronized; When the squeezing pressure and the blood flow rate are out of sync, it is determined that the blood in the blood vessel is not being driven, so as to adjust the squeezing pressure on the blood-driving area according to the type of asynchrony between the squeezing pressure and the blood flow rate; When the squeezing pressure is synchronized with the blood flow rate, it is determined that the blood in the blood vessel has been driven, so as to adjust the squeezing pressure and the holding pressure duration on the blood-driving area.

[0059] It should be noted that the functions or steps that can be implemented by the computer-readable storage medium or computer device described above can be referred to the relevant descriptions on the server side and client side in the foregoing method embodiments. To avoid repetition, they will not be described one by one here.

[0060] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

[0061] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is used as an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the system can be divided into different functional units or modules to complete all or part of the functions described above.

[0062] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention.

[0063] Finally, it should be noted that in the above embodiments, each embodiment can be combined with each other or independent. Deleting any one of them will not affect the technical implementation of other embodiments. The above embodiments are only used to illustrate the technical solutions of the present invention and not to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A method for adjusting hemostatic parameters based on pressure detection, characterized in that, The method includes: Multiple blood-driving zones are set along the direction from the distal to the proximal end of the human limb, and pressure sensors and flow rate sensors are arranged in multiple blood-driving zones. During the sequential squeezing of the blood-draining area, the squeezing pressure in the blood-draining area is collected by the pressure sensor, and the blood flow velocity in the blood vessels in the blood-draining area is collected by the flow velocity sensor. Determine whether the squeezing pressure and the blood flow rate are synchronized; When the squeezing pressure and the blood flow rate are out of sync, it is determined that the blood in the blood vessel is not being driven, so as to adjust the squeezing pressure on the blood-driving area according to the type of asynchrony between the squeezing pressure and the blood flow rate; When the squeezing pressure is synchronized with the blood flow rate, it is determined that the blood in the blood vessel has been driven, so as to adjust the squeezing pressure and the holding pressure duration on the blood-driving area.

2. The method for adjusting hemostatic parameters based on pressure detection as described in claim 1, characterized in that, Determining whether the squeezing pressure and the blood flow rate are synchronized includes: Identify the pressure change trend corresponding to the squeezing pressure and the flow rate change trend corresponding to the blood flow rate, respectively. Determine whether the pressure change trend is consistent with the flow rate change trend; When the pressure change trend is consistent with the flow rate change trend, it is determined that the squeezing pressure is synchronized with the blood flow rate; When the pressure change trend is inconsistent with the flow rate change trend, it is determined that the squeezing pressure and the blood flow rate are out of sync.

3. The method for adjusting hemostatic parameters based on pressure detection as described in claim 2, characterized in that, Identifying the pressure change trend corresponding to the extrusion pressure includes: Calculate the pressure difference between the current extrusion pressure and the previous extrusion pressure. Calculate the rate of change of the pressure difference relative to the extrusion pressure at the previous moment; Obtain the range of rate of change; When the pressure change rate falls within the range of the change rate, the pressure change trend corresponding to the extrusion pressure is determined to be a constant trend. When the pressure change rate is lower than the change rate range, the pressure change trend corresponding to the extrusion pressure is determined to be a decreasing trend; When the pressure change rate is higher than the change rate range, the pressure change trend corresponding to the extrusion pressure is determined to be an increasing trend.

4. The method for adjusting hemostatic parameters based on pressure detection as described in claim 3, characterized in that, Obtain the range of rate of change, including: Collect historical compression pressures after airbag inflation at different historical stages; The rate of change range is determined based on the historical data on the rate of change of extrusion pressure.

5. The method for adjusting hemostatic parameters based on pressure detection as described in claim 1, characterized in that, Pressure sensors and flow rate sensors were deployed at multiple blood-driving zones, including: Pressure sensors and flow sensors are deployed on the inner wall of the limb in multiple blood-driving zones.

6. The method for adjusting hemostatic parameters based on pressure detection as described in claim 1, characterized in that, The pressure sensor collects the squeezing pressure in the blood-dripping area, including: When the air pump inflates the airbag, the pressure sensor collects the squeezing pressure on the human limb during and after the airbag expands in the blood-driving area.

7. The method for adjusting hemostatic parameters based on pressure detection as described in claim 1, characterized in that, The blood flow velocity in the blood vessels of the blood-dripping area is collected by the flow sensor, including: The flow rate sensors in each blood-driving zone are synchronized with the pressure sensors to collect the blood flow rate within the blood vessels.

8. The method for adjusting hemostatic parameters based on pressure detection as described in claim 1, characterized in that, Adjusting the compression pressure on the blood-driving area according to the type of asynchrony between the compression pressure and the blood flow rate includes: When the pressure change trend is increasing and the flow rate change trend is constant, the inflation rate of the air pump to the air bag is slowed down to adjust the squeezing pressure on the blood-driving area. When the pressure change trend is increasing and the flow rate change trend is decreasing, the air pump is stopped from inflating the airbag to adjust the squeezing pressure on the blood-dripping area. When the pressure change trend is constant and the flow rate change trend is decreasing, the squeezing pressure on the blood-driving area is reduced.

9. The method for adjusting hemostatic parameters based on pressure detection as described in claim 1, characterized in that, Adjusting the compression pressure and holding time on the blood-draining area includes: When the synchronous type is characterized by both increasing pressure and increasing flow rate, the current adjustment trajectory of the squeezing pressure on the blood-draining area is maintained, and the pressure holding duration is extended. When the synchronous type is characterized by both constant pressure and constant flow rate, the squeezing pressure on the blood-driving area is maintained, and the pressure holding time is shortened.

10. A blood-dripping parameter adjustment system based on pressure detection, characterized in that, The system includes: The sensor arrangement module is used to set up multiple blood-driving zones along the distal to proximal direction of the human limb, and to arrange pressure sensors and flow rate sensors in the multiple blood-driving zones. The data acquisition module is used to acquire the compression pressure in the blood-expelling area through the pressure sensor and the blood flow velocity in the blood vessels in the blood-expelling area through the flow velocity sensor during the sequential compression process of the blood-expelling area. A synchronization judgment module is used to determine whether the squeezing pressure and the blood flow rate are synchronized; The pressure regulation module is used to determine that the blood in the blood vessel is not driven when the squeezing pressure and the blood flow rate are not synchronized, so as to adjust the squeezing pressure on the blood-driving area according to the type of asynchrony between the squeezing pressure and the blood flow rate. The time adjustment module is used to determine that the blood in the blood vessel has been driven when the squeezing pressure is synchronized with the blood flow rate, so as to adjust the squeezing pressure and the holding pressure duration of the blood driving area.

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