Hemostatic Support System

Abstract

To provide a hemostatic support system capable of appropriately adjusting the pressure output in accordance with individual differences. [Solution] A hemostasis support system 100 comprising: a compression device 1 configured to apply pressure to a pressure site, which is a part of the patient's body, to support hemostasis; a detection device 2 that is placed in contact with a detection site, which is another part of the patient's body, to detect the flow of blood within the blood vessel and generate and output detection data containing a corresponding fluid motive force waveform; and a control device 3 that controls the compression device to ease the output of pressure on the part of the patient's body when the waveform feature value of the fluid motive force waveform contained in the detection data satisfies a predetermined condition.

Description

[Technical Field]

[0001] The present invention relates to a support system, and more particularly to a hemostatic support system used for hemostasis. [Background technology]

[0002] The monitoring system for tourniquets described in Patent Document 1 monitors the performance of a hemostatic device during a hemostatic procedure, and specifically, is configured to adjust the pressure applied to an artery or vein to match a target pressure.However, there is room for improvement because the target pressure appropriate for hemostasis varies from patient to patient. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2024-522778 Summary of the Invention [Problem to be solved by the invention]

[0004] In view of the above problems, the present invention aims to provide a hemostatic support system that improves the above drawbacks. [Means for solving the problem]

[0005] In order to achieve the above object, the present invention provides a hemostatic support system that can be applied to a part of the body through which a blood vessel to be hemostatic passes, comprising: a compression device configured to compress a compression site that is a part of the body to support hemostasis; a detection device that is placed in contact with a detection site on the body that is different from the compressed site, thereby detecting blood flow in a blood vessel at the detection site and generating and outputting detection data that includes a corresponding fluid dynamics waveform; A hemostatic support system is provided, which includes a control device that is signal-connected to the compression device and the detection device, receives the detection data, and, when a waveform feature value in the fluid power waveform included in the detection data satisfies a predetermined condition, determines that the blood flow rate in the blood vessel at the detection site is insufficient and controls the compression device to reduce the compression output to the compression site. [Effects of the Invention]

[0006] The hemostatic support system of the present invention, having the above-described configuration, controls the compression device to reduce the compression output to the patient's body when insufficient blood flow is indicated based on the detection data containing the corresponding fluid power waveform detected by the detection device, thereby making it possible to appropriately adjust the compression output to suit individual differences. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a block diagram showing the configuration of an embodiment of the hemostasis support system of the present invention. [Figure 2] 1 is a flowchart showing the operating state of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] In order to more clearly explain the objectives, technical means, and advantages of the embodiments of the present invention, the following will clearly and completely describe the technical means in the embodiments of the present invention in combination with the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. Generally, the components of the embodiments of the present invention depicted and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the detailed description of the embodiments of the present invention provided below in the accompanying drawings does not constitute any limitation on the protection scope of the present invention, but merely represents selected embodiments of the present invention.

[0009] It should be noted that, unless otherwise defined, the term "signal connection" in this specification is used to describe a relationship in which "signals can be transferred" between computer hardware (e.g., electronic systems, apparatus, devices, units, and components), and generally refers to a "wired signal connection" between multiple pieces of computer hardware that are physically connected to each other by conductor / semiconductor materials, and a "wireless signal connection" for wireless data transfer using wireless communication technologies (e.g., but not limited to, wireless networks, Bluetooth (registered trademark), and electromagnetic induction sensing). Furthermore, the term "signal connection" in this specification includes both a "direct signal connection" in which multiple pieces of computer hardware are directly connected to each other, and an "indirect signal connection" in which multiple pieces of computer hardware are indirectly connected to each other via other computer hardware.

[0010] FIG. 1 shows an embodiment of a hemostasis support system 100 of the present invention. As shown in the figure, this hemostasis support system 100 can be applied to a part of the body through which blood vessels pass of a person to be hemostasis-treated (hereinafter referred to as a patient). For example, when the part of the body is injured and bleeding, the system is equipped with a compression device 1 configured to apply pressure to the part of the body to support hemostasis at the bleeding site, a detection device 2 that can be installed so as to come into contact with another part of the body, and a control device 3 that is connected to the compression device 1 and the detection device 2 via signals.

[0011] The patient is, for example, a human or a non-human animal, and therefore the part of the body refers to a part of the body of a human or a non-human animal, such as a limb or torso, through which blood vessels pass, and the present invention aims to provide a hemostatic support system 100 as a machine that supports hemostasis in a human or a non-human animal.

[0012] The compression device 1 may be configured to have, for example, a controller (not shown) with a start switch and one or more airbags (not shown), and be attached to a part of the patient's body that is the bleeding site or a part of the body that is close to the bleeding site and is close to the heart (hereinafter also referred to as the compression site), and may be configured to inject air into the airbag to inflate and apply pressure to the part of the patient's body, thereby helping to stop the bleeding at the bleeding site, and to release some of the air from the airbag to ease the compression output to the part of the patient's body, thereby eliminating poor circulation.Incidentally, in this embodiment, the compression device 1 is configured to be activated by a controller with a start switch, but it is also possible to configure the controller function to be incorporated into the control device 3.

[0013] The detection device 2 is configured to be attached (positioned) so as to come into contact with, for example, another part of the patient's body, such as near the tip of a limb (for example, an arm, finger, ankle, etc., hereinafter also referred to as the detection part) that is farther from the heart than the compression part, and to detect the flow of blood in the blood vessels in that other part of the patient's body that is the detection part, and to generate and output detection data that includes a corresponding fluid dynamics waveform; specifically, it can be configured, for example, by a photoplethysmography (PPG) sensor.

[0014] The control device 3 may be, for example, a processor having an information processing function, and is configured to receive detection data generated and output by the detection device 2 by signal connection to the compression device 1 and the detection device 2, and to control the operating state of the compression device 1 based on the detection data. Specifically, when a waveform feature value of the fluid power waveform included in the received detection data satisfies a predetermined condition, the control device 3 determines that the blood flow rate in the blood vessels in another part of the patient's body (the detected site) is insufficient, and controls the compression device 1 to reduce the output of compression on the part of the body (the compressed site). More specifically, the waveform feature value may be, for example, the peak value and / or half-width of the fluid power waveform, and the control device 3 may be configured to determine that the predetermined condition is satisfied when the waveform feature value is equal to or less than a predetermined threshold, or when the continuous period during which the waveform feature value is equal to or less than the predetermined threshold exceeds a predetermined period.

[0015] FIG. 2 is a flowchart showing the operation of an embodiment of the hemostatic support system 100 of the present invention. The following describes how to use the hemostatic support system 100 of the present invention with reference to this embodiment.

[0016] First, in step S0, the compression device 1 and the detection device 2 are appropriately attached to the body of a patient with an injury and bleeding. That is, the compression device 1 is attached to a location (compression site) where it can exert a pressure-induced hemostasis effect, and the detection device 2 is attached to a location (detection site) in the patient's body that is suitable for detecting the flow of blood in the blood vessels.

[0017] In step S1, the controller of the compression device 1 is activated, and air is injected into (each) air bag of the compression device 1 to inflate the air bag, which then compresses a part of the patient's body, thereby supporting hemostasis at the bleeding site.

[0018] In step S2, the detection device 2 detects the flow of blood in blood vessels in another part of the patient's body under the control of the control device 3, generates detection data including a corresponding fluid power waveform, and continues to output the detection data to the control device 3. Specifically, for example, detection data including a fluid power waveform corresponding to the blood flow can be generated by a PPG test every second and output to the control device 3. In this embodiment, the fluid power waveform is a DC waveform composed of numerical values ​​detected by the PPG test, and the blood flow rate at each time point is recorded.

[0019] In step S3, the control device 3 compares the waveform feature value of the fluid power waveform detected by the detection device 2 with a predetermined threshold to determine whether the predetermined condition is satisfied. Specifically, the waveform feature value here is the peak value and / or half-width of the fluid power waveform detected by the detection device 2. The predetermined condition can be determined to be satisfied, for example, when the waveform feature value is equal to or less than the predetermined threshold. Alternatively, the predetermined condition can be determined to be satisfied when the waveform feature value remains equal to or less than the predetermined threshold for a predetermined period (e.g., 10 seconds). The peak value represents the systolic blood pressure of the heart, i.e., the pressure exerted on the blood vessels by the blood flow pumped from the heart during the heart's pumping action. The half-width represents the water content of the blood. The smaller the half-width, the less water there is in the blood, which is the cause of insufficient blood flow. In other words, insufficient blood flow prevents blood from reaching the extremities, potentially leading to necrosis of the extremities.

[0020] If the control device 3 determines in step S3 that there is a blood flow deficiency based on the fluid power waveform (YES), the process proceeds to step S4. On the other hand, if the control device 3 determines in step S3 that there is no blood flow deficiency, the process returns to step S2 and continues detection.

[0021] In step S4, if the control device 3 determines that there is insufficient blood flow based on the fluid power waveform, the control device 3 generates a hemostasis support signal and transmits it to the compression device 1. When the control device 3 transmits the hemostasis support signal to the compression device 1, the control device 3 may be configured to sound a siren or turn on a lamp to attract the attention of nearby people (such as nurses) or to notify a mobile device carried by the nurse.

[0022] In step S5, when the compression device 1 receives a hemostasis support signal from the control device 3, the compression device 1 releases some of the air from the airbag to reduce the compression output on the part of the patient's body and eliminate poor circulation (insufficient blood flow). Incidentally, when the compression device 1 releases some of the air from the airbag to reduce the compression output by the airbag, the control device 3 does not need to specify the amount of air to be released from the airbag by the compression device 1; the compression device 1 can simply operate according to the preset release amount.

[0023] In a modified embodiment of the present invention, if the fluid power waveform is a DC waveform, the waveform characteristic value can be the difference between the maximum and minimum values ​​of the fluid power waveform, while if the fluid power waveform is an AC waveform, the waveform characteristic value can be the peak-to-peak value of the fluid power waveform. Generally speaking, as long as the waveform characteristic value can represent the change in blood flow rate in the blood vessels in other parts of the patient's body, there is no restriction on the actual numerical value, and therefore it is not limited to the peak value and / or half-width described in this embodiment.

[0024] The compression device 1 may be of a type in which an airbag is inflated electrically, but may also be of a type in which an airbag is inflated manually, and is not limited to a configuration that uses an airbag.

[0025] To summarize the above, when the waveform characteristic value of the fluid power waveform detected by the detection device 2 meets a predetermined condition, the hemostasis support system of the present invention determines that the blood flow rate in the blood vessels in the part of the patient's body where the detection device 2 is located is insufficient, and controls the compression device to reduce the compression output to the part of the body where the compression device 1 is located, thereby eliminating the risk of necrosis of part of the patient's body due to excessive compression for the purpose of hemostasis, and thereby reliably achieving the object of the present invention.

[0026] The above-described embodiments are illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Those skilled in the art may make slight changes or modifications to the above-described embodiments without departing from the spirit and scope of the present invention. Therefore, all changes and modifications made by those skilled in the art without departing from the gist of the present invention should be considered to fall within the scope of protection of the present invention. [Explanation of symbols]

[0027] 1. Compression device 2. Detection device 3. Control device S0~S5 steps

Claims

1. A hemostatic support system that can be applied to a part of the body through which a blood vessel to be hemostatically controlled passes, a compression device configured to compress a compression site that is a part of the body to support hemostasis; a detection device that is placed in contact with a detection site on the body that is different from the compressed site, thereby detecting blood flow in a blood vessel at the detection site and generating and outputting detection data that includes a corresponding fluid dynamics waveform; a control device that is signal-connected to the compression device and the detection device, receives the detection data, and, when a waveform feature value corresponding to the fluid power waveform included in the detection data satisfies a predetermined condition, determines that the blood flow rate in the blood vessel at the detection site is insufficient and controls the compression device to reduce the compression output to the compression site.

2. The hemostasis support system of claim 1, wherein the waveform characteristic value is a peak value and / or a half-width of the fluid power waveform, and the control device is configured to determine that the specified condition is met when the waveform characteristic value is equal to or less than a specified threshold value.

3. The hemostatic support system of claim 1, wherein the waveform characteristic value is a peak value and / or a half-width of the fluid power waveform, and the control device is configured to determine that the specified condition is met when the continuous period during which the waveform characteristic value is equal to or less than a specified threshold value exceeds a specified period.

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