Medical system, medical device and program

Abstract

[Problem] To improve patient care after performing the necessary procedure on the affected area of a puncture site in the radial artery or the like. [Solution] A medical system 1 according to one aspect of the present invention has: an acquisition unit 20 for acquiring a plurality of units of biological information which pertain to the state of a patient who has undergone a procedure which involves piercing in an artery of the arm; a control unit 50 which is capable of adjusting the compression method for stopping the bleeding of the patient on the basis of the plurality of units of biological information pertaining to the state of the patient which were acquired by the acquisition unit; and a notification unit 30 capable of providing a notification about the intervention method based on the biological information.

Description

Medical Systems, Medical Devices and Programs

[0001] The present invention relates to a medical system, a medical device, and a program.

[0002] One known catheterization technique involves puncturing a blood vessel, such as the radial artery, in a patient's arm, hand, or wrist, and introducing various types of elongated medical objects into the blood vessel through the puncture site formed in the blood vessel in the patient's arm to perform treatment or therapy on the lesion. This technique may be called radial approach PCI (percutaneous coronary intervention) or TR (trans-radial) approach.

[0003] After the above-described procedure, pressure is generally applied to the puncture site to stop bleeding. Among conventional hemostatic instruments, there is known a device that can be wrapped around the puncture site of a patient and apply pressure (see, for example, Patent Document 1).

[0004] Patent No. 6862003 specification

[0005] The present inventors have been actively studying techniques for improving patient care after performing the necessary procedures, including the above-mentioned hemostasis, on the lesion site from the puncture site of the radial artery or the like.

[0006] The present invention has been made in consideration of the above-mentioned problems, and aims to improve patient care after performing necessary procedures on the lesion site from the puncture site of the radial artery or the like.

[0007] The above object is achieved by the following aspects (1) to (13) of the present invention. (1) A medical system including an acquisition unit that acquires multiple pieces of biometric information related to the condition of a patient who has undergone a procedure involving puncture of an artery in the upper limb; a compression control unit that adjusts a compression method for stopping bleeding in the patient based on the multiple pieces of biometric information related to the patient's condition acquired from the acquisition unit; and a notification unit that notifies an intervention method based on the biometric information. (2) The medical system described in (1), in which the compression control unit calculates a compression protocol that defines the compression method and adjusts the compression method based on the compression protocol. (3) The medical system described in (1) or (2), in which the acquisition unit acquires first information including at least one of a dimension of a portion of a medical instrument used in the procedure that is inserted into the patient and a blood vessel diameter of the patient, and in which the notification unit notifies the modified intervention method when a first score calculated based on the first information is greater than a first threshold. (4) The medical system described in any one of (1) to (3), in which the compression control unit adjusts the compression method when the patient's oxygen saturation is equal to or less than a second threshold. (5) The medical system described in (4), wherein the comparison of the patient's oxygen saturation with the second threshold is performed when the patient's peripheral temperature is equal to or lower than a third threshold. (6) The medical system described in (1) or (2), wherein the compression control unit adjusts the compression method and the notification unit notifies the patient of the revised intervention method when a second score calculated based on second information including at least one of a therapeutic drug used for the patient and a dose of an anticoagulant is equal to or higher than a fourth threshold. (7) The medical system described in (6), wherein the second score is calculated when a hemostasis time predicted from the second information exceeds a fifth threshold. (8) The medical system described in (1) or (2), wherein the acquisition unit acquires a circumference of the patient's puncture site, and the compression control unit adjusts the compression method when a difference between the circumference and a reference circumference exceeds a sixth threshold. (9) A medical system described in (1) or (2), in which the compression control unit adjusts the compression method when a third score calculated based on the patient's responses to questions regarding at least one of pain, vomiting, nausea, and physical condition of the patient who underwent the procedure by puncturing an artery in the upper limb is equal to or less than a seventh threshold.(10) The medical system according to any one of (1) to (9), comprising a recording unit that records the compression method applied to the patient by the compression control unit and the intervention method notified to the patient. (11) A medical device that is wearable on the wrist of the patient, comprising: an acquisition unit that acquires a plurality of pieces of biometric information related to the condition of a patient who has undergone a procedure involving puncturing an artery in an upper limb; a compression control unit that can adjust a compression method for stopping the bleeding of the patient based on the plurality of pieces of biometric information related to the patient's condition acquired from the acquisition unit; and a notification unit that can notify the patient of the intervention method adjusted based on the biometric information. (12) A program that acquires a plurality of pieces of biometric information related to the condition of a patient who has undergone a procedure involving puncturing an artery in an upper limb, and adjusts a compression method for stopping the bleeding of the patient based on the plurality of pieces of biometric information related to the patient's condition acquired, thereby adjusting the intervention method for the patient. (13) A medical device having a balloon capable of compressing the puncture site on a patient and usable together with a tourniquet that can be attached to the patient's wrist or forearm, the medical device having an acquisition unit that acquires multiple pieces of biometric information regarding the condition of a patient who has undergone a procedure involving puncture of an artery in the upper limb, and a compression control unit that can adjust the compression method for stopping the bleeding of the patient from the multiple pieces of biometric information regarding the patient's condition acquired from the acquisition unit, and an attachment unit that can be attached to the patient's wrist or forearm, the tourniquet and the attachment unit being connectable and detachable.

[0008] The above-described medical system, medical device, and program can improve patient care after performing necessary procedures on the lesion site through a puncture site such as the radial artery, thereby preventing postoperative complications.

[0009] FIG. 1 is a block diagram showing a medical system according to a first embodiment. FIG. 2 is a diagram showing a medical device constituting the medical system according to the first embodiment. FIG. 3 is a diagram showing an example of a screen which is one of the notification units constituting the medical device. FIG. 4 is a flowchart for determining adjustment of the compression method for a hemostasis site of a patient in the medical system according to the first embodiment. FIG. 5 is a flowchart for determining an intervention method for medication for a patient who has undergone a procedure in the medical system according to the first embodiment. FIG. 6 is a flowchart for determining adjustment of the compression method for a hemostasis site of a patient in the medical system according to a first modified example of the first embodiment. FIG. 7 is a flowchart for determining an intervention method for adjustment of the compression method for a hemostasis site of a patient and medication in the medical system according to a second embodiment. FIG. 8 is a flowchart for determining an intervention method for adjustment of the compression method for a hemostasis site of a patient and medication in the medical system according to a third embodiment. FIG. 9 is a diagram showing the external appearance of a medical system according to a fourth embodiment.

[0010] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The embodiments shown here are merely examples for embodying the technical concept of the present invention and are not intended to limit the present invention. Furthermore, all other embodiments, examples, and operational techniques that can be conceived by those skilled in the art without departing from the spirit of the present invention are included within the scope and spirit of the present invention, as well as within the scope of the claims and their equivalents.

[0011] Furthermore, for the convenience of illustration and ease of understanding, the drawings attached to this specification may be represented schematically with the scale, aspect ratio, shape, etc. appropriately changed from the actual product, but these are merely examples and do not limit the interpretation of the present invention.

[0012] In the following description, ordinal numbers such as "first" and "second" are used, but unless otherwise specified, these are used for convenience and do not stipulate any particular order.

[0013] A medical system 1 according to this embodiment will be described below with reference to Figures 1 to 5. Figure 1 is a block diagram showing the medical system 1 according to this embodiment. Figure 2 is a diagram showing a medical device 100 that constitutes the medical system 1 according to this embodiment. Figure 3 is a diagram showing an example of a screen that is one of the notification units 30 that constitute the medical system 1.

[0014] Fig. 4 is a flowchart for determining adjustment of the compression method for the hemostasis site of a patient using the medical system 1. Fig. 5 is a flowchart for determining an intervention method for medication of a patient who has undergone a procedure using the medical system 1.

[0015] The medical system 1 according to this embodiment is used for postoperative management of a patient who has undergone a procedure in which an artery in the patient's upper limb, such as the radial artery, is punctured.

[0016] 1 and 2, the medical system 1 according to this embodiment includes a medical device 100 and a server 200. Each component will be described in detail below.

[0017] <Medical Device 100> The medical device 100 is configured to be wearable on the wrist or the like of a patient where the radial artery or the like is present. As shown in Fig. 1 , the medical device 100 has a power supply unit 10, an acquisition unit 20, a notification unit 30, a communication unit 40, a control unit 50 (corresponding to a compression control unit), and a wearing unit 60. These will be described in detail below.

[0018] <Power supply unit 10> The power supply unit 10 is configured to be able to store the power required to operate the medical device 100. The power supply unit 10 can include a known battery module (such as a secondary battery that can be repeatedly used by charging) or the like.

[0019] <Acquisition Unit 20> The acquisition unit 20 is configured to be able to acquire multiple pieces of biometric information related to the condition of a patient who has undergone a procedure involving puncture of an artery in the upper limb, including the radial artery (multiple vital signs of the patient after surgery (pulse, heart rate, oxygen saturation, upper arm edema, etc.)) and information related to operations from the user. The acquisition unit 20 can include, as input, a microphone, a character input interface, various sensors, etc. Here, the various sensors can include at least one of an acceleration sensor, a gyro sensor, an optical sensor, a pressure sensor, a magnetic sensor, a motion sensor, a temperature sensor, a heart rate sensor, a sensor with a pulse oximeter function, a pulse wave sensor, an ultrasonic sensor, a blood flow sensor, a flow velocity sensor, a humidity sensor, a moisture sensor, a blood detection sensor, a blood pressure sensor, a sensor with a bleeding detection function, etc., and can be provided on the surface of the medical device 100 that comes into contact with the patient's body surface. Furthermore, each sensor can be provided in a separate housing connected to the medical device 100 by a cord, and can be attached to a position distal to the patient's hemostasis site, such as the patient's finger, and away from the medical device 100.

[0020] The acquisition unit 20 can acquire information about the patient's body temperature using a temperature sensor or the like. Furthermore, the acquisition unit 20 can acquire the patient's voice responses to questions, etc., described below, using a microphone. Furthermore, the configuration for measuring the patient's oxygen saturation can include a device that emits light, such as an LED (Light Emitting Diode), and a device that detects the amount of reflected light from the emitted LED, etc., such as an optical sensor. Information about the patient's pulse rate can be acquired using an optical sensor and a pulse wave sensor. Furthermore, information about the patient's blood oxygen level can be acquired by including any one of a sensor with pulse oximeter function, a blood flow sensor, an ultrasonic sensor, and a blood detection sensor.

[0021] Furthermore, the acquisition unit 20 can acquire information about the circumference of the attachment site of the medical device 100 by acquiring information about the initial value of the circumference of the attachment unit 60 and the increase or decrease in the circumference of the attachment unit 60 adjusted by the control unit 50. The heart rate sensor can acquire information about the heart rate of the patient wearing the medical device 100. Furthermore, the attachment unit 60 can acquire information about the patient's blood pressure by detecting the patient's pulse wave with a pressure sensor while changing the compression force on the attachment site as described below.

[0022] Furthermore, by including a sweat sensor, a moisture sensor, or a humidity sensor, the acquisition unit 20 can acquire information about the salt and moisture content of bodily fluids. Furthermore, by including a blood detection sensor or a sensor with a bleeding detection function, the acquisition unit 20 can acquire information about bleeding at the puncture site. Furthermore, the acquisition unit 20 can include electrodes 21 that can be attached to a housing 61 and a wrapping unit 62 that constitute the wearing unit 60 (described later) at a location that can come into contact with the wrist (see FIG. 2 ).

[0023] The acquisition unit 20 can record programs, data, etc. executed by the control unit 50, like a recording unit. The acquisition unit 20 can record the compression method applied to the patient by the control unit 50 and the intervention method notified to the patient. As described below, the acquisition unit 20 can acquire information such as the outer diameter and blood vessel diameter of a medical instrument such as a sheath introduced into the patient's blood vessel as information (first information) necessary for determining the risk of internal bleeding. The acquisition unit 20 can also store information identifying a user such as a patient. The acquisition unit 20 can also record data such as text data corresponding to voice in order to identify voice responses via a microphone, etc.

[0024] The acquisition unit 20 may include storage such as a RAM (Random Access Memory) or a ROM (Read Only Memory) as a specific configuration for the recording unit.

[0025] <Notification Unit 30> The notification unit 30 is configured to notify the wearer of the medical device 100 of an intervention method based on the biological information. The notification unit 30 may include a touch screen, speaker, vibrator, etc., as components for providing information to the wearer. Here, the touch screen may also function as an acquisition unit that allows the operator to acquire information with their fingers. If the first score calculated based on the above-described first information is greater than a first threshold V1, the notification unit 30 is configured to notify the wearer of corrections to the dosage of anticoagulants, etc., as described below. The notification unit 30 can notify the patient of adjusted medication dosages, additional test items, etc. Data calculated from information on blood circulation, internal bleeding, comfort level, etc., as described throughout this specification, can be displayed as a radar chart as shown in FIG. 3.

[0026] <Communication Unit 40> The communication unit 40 is configured to be able to communicate with the server 200, etc. via the network N to provide useful information to the user, i.e., the patient (wearer), after surgery. The communication unit 40 may include a mobile communication device connectable to a base station, a module that enables communication using WIFI (Wireless Fidelity), BLUETOOTH (registered trademark), etc. The communication unit 40 may also include a GPS (Global Positioning System) module for acquiring the location of the medical device 100.

[0027] <Controller 50> The controller 50 controls the overall operation of the medical device 100. The controller 50 is configured to calculate data related to interventions required for postoperative patient management (presence or absence of bleeding, peripheral blood circulation status, state of upper arm edema, level of pain of the patient, etc.) based on the information acquired by the acquirer 20. The controller 50 is configured to calculate a compression protocol that defines a compression method for stopping bleeding in the patient based on multiple pieces of biological information related to the patient's condition acquired from the acquirer 20, and then adjust the compression method or the method of taking medication such as an anticoagulant.

[0028] In this embodiment, the control unit 50 is configured to cause the notification unit 30 to modify the anticoagulant administration method and notify the patient when a score (first score) calculated using information (first information) acquired from the acquisition unit 20 is greater than a first threshold V1, as described below. The control unit 50 is configured to adjust the compression method based on the compression protocol when the oxygen saturation is equal to or lower than a second threshold V2, as described below. The comparison of the oxygen saturation with the second threshold V2 is performed when the patient's peripheral temperature is equal to or lower than a third threshold V3. Examples of hardware constituting the control unit 50 include a CPU (Control Processing Unit) and a GPU (Graphic Processing Unit). The control unit 50 may also have a button that can be mounted on the attachment unit 60 and can turn the medical device 100 on and off.

[0029] <Attachment Unit 60> The attachment unit 60 is configured to allow the medical device 100 to be attached to a patient's hemostasis site. As shown in FIG. 2 , the attachment unit 60 includes a housing 61 and a winding unit 62. A hemostasis compression unit (not shown) is provided on the inner side of the winding unit 62 that contacts the patient, and this compression unit is attached so as to be aligned with the patient's hemostasis site (puncture site). The compression unit is balloon-shaped and expands when filled with a fluid such as air to compress a wound or the like at the hemostasis site. Alternatively, the winding unit 62 itself may be made of a flexible, hollow member, and the amount of compression may be adjustable by filling it with a fluid. The housing 61 may include a material such as metal that houses the hardware (devices or components) that constitute the power supply unit 10, acquisition unit 20, notification unit 30, communication unit 40, and control unit 50. The winding unit 62 is connected to the housing 61 and, together with the housing 61, is provided to surround the patient's hemostasis site. The various sensors of the acquisition unit 20 described above can be installed near the portions of the housing 61 and the wrapping unit 62 that may come into contact with the wearer's wrist. The wrapping unit 62 is configured to be adjustable to fit the circumference of the area where the device is to be worn, where hemostasis is desired on the patient. The various sensors described above may be attached to the patient as a separate device from the wearing unit, capable of wired or wireless communication with the acquisition unit 20 built into the housing 61, or may be provided on the surface of the housing facing the patient's body. The electrode 21 is an electrode for acquiring biometric information, and is paired with an electrode (not shown) located on the back of the housing 61. A weak current is passed from one electrode to the other, and biometric information about the wrist is calculated from the relationship between the current waveform and the voltage waveform between the two electrodes.

[0030] The winding portion 62 is shaped, for example, like a wristwatch band, and has an internal space that can be filled with and discharged with fluid as its circumference changes. A tube (not shown) or the like is connected to the internal space of the winding portion, and by connecting to a portable pump (not shown), the amount of fluid filled into each compression portion can be individually adjusted. The control unit 50 can calculate and adjust the amount of compression applied to the patient's hemostasis area at a given time when the device is worn, based on the adjustable filling amount, which can be adjusted by supplying and discharging fluid, such as air, sent to the compression portion. The material of the attachment portion is not particularly limited, but, for example, the housing 61 can be made of a metal such as stainless steel, and the winding portion 62 and compression portion can be made of a flexible plastic material or the like.

[0031] <Server 200> The server 200 is configured to record (store) data necessary for determining postoperative patient care. The server 200 can store data such as device information, such as the outer diameter of the medical instrument used in the patient's surgery, the patient's vital signs, information such as the patient's blood vessel diameter, and information on the therapeutic drug and anticoagulant used for the patient. The server 200 is configured to be able to communicate with the medical device 100 via the network N. The server 200 may be configured as a single device or as a plurality of devices. The server 200 may be realized using the company's own resources (on-premises) as long as it can securely communicate the patient's biometric information, or may be realized by using other company's resources such as a cloud service, or may be realized by using a combination of the company's and other company's resources (hybrid).

[0032] (Adjustment of Compression Method) Next, we will explain adjustment of the compression method for the puncture site of the patient using the medical system 1 according to this embodiment. Fig. 4 is a flowchart explaining adjustment of the compression method using the medical system 1 according to the first embodiment.

[0033] After a patient undergoes a procedure in which the radial artery, an artery in the upper limb, or the like is punctured, the surgeon attaches the medical device 100 to the wrist, which is the puncture site, in an operating room or the like. The patient then moves from the treatment room to a general ward or the like, and a medical professional, such as a doctor, performs initial settings on the medical device 100 in an observation room or the like. The initial settings include the timing of sensing by the acquisition unit 20 (for example, every two hours), settings of intervention means by the notification unit 30, etc., and are performed by the medical professional.

[0034] Sensing functions include peripheral temperature sensing, upper arm edema sensing, heart rate sensing, blood pressure sensing, pulse sensing, bleeding sensing, and pain sensing. The medical professional determines which of the above-mentioned sensing functions to activate when the medical device 100 is attached. For example, for patients with a low risk of bleeding, peripheral blood circulation sensing and hematoma sensing may be set to ON. For patients with hypertension complications, peripheral blood circulation sensing, hematoma sensing, and blood pressure sensing may be set to ON. The interventions described below can be performed after the patient is discharged from the hospital, such as at home.

[0035] First, the medical device 100 measures the temperature of the patient's peripheral area using the temperature sensor of the acquisition unit 20 (acquisition of biological information, ST1). The measurement timing of the temperature sensor can be set to once every two hours, for example.

[0036] Here, if the temperature measured at each set time exceeds the third threshold V3, such as 36.0 degrees (ST2: NO), the control unit 50 determines that the risk of ischemia is low and records the temperature measurement results in the acquisition unit 20 (ST3).

[0037] If the measurement result is equal to or lower than the third threshold V3 (ST2: YES), the control unit 50 determines that the risk of ischemia is high (ST4) and causes the sensor of the acquisition unit 20 that detects oxygen saturation to measure the patient's oxygen saturation (acquisition of biological information, ST5). The oxygen saturation measurement principle can be a known measurement principle using the above-mentioned optical sensor or the like.

[0038] If the measured oxygen saturation level exceeds a set second threshold V2, such as 95% (ST6: YES), the control unit 50 records the measured oxygen saturation level in the acquisition unit 20 (ST7). Conversely, if the measured oxygen saturation level is equal to or less than the second threshold V2 (ST6: NO), the control unit 50 records the measured oxygen saturation level in the acquisition unit 20, calculates a compression protocol based on the oxygen saturation level, and adjusts the compression method based on the calculated compression protocol (ST8).

[0039] The compression protocol stores data, such as compression time, compression strength, decompression interval, and decompression amount per cycle, in the acquisition unit 20. The control unit 50 then selects and sets an appropriate decompression interval and decompression amount per cycle based on the referenced oxygen saturation. For example, if the risk of ischemia is high and the compression force is adjusted in stages, as shown in ST4 of FIG. 4, after a predetermined time has elapsed since the start of hemostasis (compression), and if the oxygen saturation is above 95%, the compression force is reduced by one decompression step relative to the amount of fluid filled in the compression section at the start of hemostasis. The state in which the compression section is filled with fluid at the start of hemostasis can be referred to as the initial state. Furthermore, if the oxygen saturation is between 90% and 95%, the compression force is reduced by two decompression steps relative to the initial state. Furthermore, if the oxygen saturation is 90% or less, the compression force can be reduced by three decompression steps relative to the initial state. As a change to the compression protocol, if the compression force is relatively high in the initial state, in order to avoid complications due to prolonged compression at that compression force, the patient's peripheral blood circulation and bleeding status can be checked, and the optimal compression force can be calculated at regular intervals, and the compression force can be adjusted based on the calculated value.

[0040] (Intervention for Internal Bleeding) Figure 5 is a flowchart explaining intervention for internal bleeding. In PCI procedures using the radial artery or the like as a puncture site, the arterial blood vessel wall may be damaged when devices such as a guidewire or sheath pass through the arterial blood vessel, which may result in internal bleeding after the procedure. Figure 5 is an intervention for preventing the risk of such internal bleeding.

[0041] Regarding the risk of internal bleeding, damage to blood vessels can vary depending on the outer diameter of the sheath used in the procedure and the type of tip at the distal end of the guidewire. Furthermore, the likelihood of internal bleeding can vary depending on the inner diameter of the patient's arterial blood vessels and the degree of vascular hardening. The control unit 50 causes the acquisition unit 20 to acquire information such as the outer diameter of a long tubular member, such as a sheath, used in a procedure in which the radial artery or the like is punctured, and information such as the patient's blood vessel diameter (acquisition of biological information, ST11). This information is recorded in a server 200 accessible to the medical device 100 by a medical professional, such as a doctor, via a communicable electronic device, such as a PC (personal computer), after the patient's procedure in which the radial artery is punctured is completed and before the patient is discharged from a medical institution or the like. The medical device 100 accesses the server 200 or the like via the communication unit 40 to acquire the above-mentioned information.

[0042] The controller 50 then calculates data necessary to determine the level of risk of internal bleeding resulting from a procedure through the radial artery, etc. Specifically, the controller 50 calculates a risk score based on the dimensions of devices used during the procedure, such as a sheath, catheter, or guidewire (ST12). More specifically, in terms of the risk of complications after PCI, if a sheath of 6 Fr or larger or a wire with a relatively stiff distal tip is used in the procedure, points are added to the risk score. On the other hand, if a sheath of 5 Fr or smaller or a wire with a soft distal tip is used, points are not added to the risk score. Generally, the larger the sheath diameter, the greater the risk of injury to the blood vessel into which the sheath is inserted. Furthermore, the stiffness of the distal tip may vary depending on the flexible length of the distal tip or on the structure, material, etc., such as the coil structure. For example, the server 200 can store data related to the product names and product codes of commercially available guidewires and the stiffness of their distal tips. Medical professionals can then automatically add points to the risk score by inputting the guidewire product information.

[0043] Then, the control unit 50 determines whether the calculated score (first score) is equal to or greater than a first threshold value V1.

[0044] If the score calculated from the dimensions of devices such as sheaths, catheters, and guidewires used in the procedure is equal to or less than the first threshold value V1 (ST13: NO), the risk of internal bleeding is deemed to be relatively low, the operations described below are not performed, and information such as the sheath outer diameter is recorded in the acquisition unit 20 (ST14).

[0045] If the score is greater than the first threshold V1 (ST13: YES), the control unit 50 determines that the risk of internal bleeding is relatively high (ST15) and causes the notification unit 30 to suggest intervention for the patient to treat the internal bleeding (ST16). Specifically, the notification unit 30 notifies the patient via at least one of the touch screen and voice prompts to apply an internal bleeding treatment device such as a compression arm cover. By having the patient apply a compression arm cover or the like around the puncture site, the affected area can be protected and the symptoms of internal bleeding can be reduced. The control unit 50 can also be configured to contact the patient's relatives, etc., by email or other means when it determines that intervention for the internal bleeding is necessary.

[0046] The control unit 50 also notifies the notification unit 30 via at least one of the touch screen and voice prompts to temporarily reduce the dosage of anticoagulant medication to be taken after the procedure or to temporarily stop taking it (ST17), thereby alleviating the symptoms of internal bleeding.

[0047] When at least one of the measured values ​​of the bodily fluid status by the sweat sensor, moisture sensor, or humidity sensor in the medical device 100 falls below the respective threshold values ​​of bodily fluid volume, the control unit 50 can cause the notification unit 30 to notify the user that fluid intake is recommended.

[0048] 4 and 5 can be performed multiple times at set time intervals. Therefore, it may be determined that no adjustment of the compression method or anticoagulant is necessary in one measurement, and then determined that at least one of the adjustments of the compression method or anticoagulant is necessary in a subsequent measurement.

[0049] 4 and 5 can be recorded as a program in the acquisition unit 20. The program may be pre-recorded in the medical device, or may be configured so that the wearer can download it from the server 200.

[0050] As described above, in the medical system 1, the medical device 100 has an acquisition unit 20, a control unit 50, and a notification unit 30. The acquisition unit 20 acquires multiple pieces of biometric information related to the condition of a patient who has undergone a procedure involving puncture of an artery in the upper limb. The control unit 50 is configured to be able to adjust the compression method for stopping the bleeding of the patient based on the multiple pieces of biometric information related to the patient's condition acquired from the acquisition unit 20. The notification unit 30 is configured to be able to notify the patient of an intervention method based on the biometric information. The medical device 100 is configured to be wearable on the patient's wrist. The medical device 100 is configured to be equipped with programs that realize the functions of the acquisition unit 20, the control unit 50, and the notification unit 30.

[0051] For patients undergoing the above-mentioned TR approach surgery, medical professionals assess the bleeding status at the radial puncture point, the occlusion status of arterial blood vessels, upper arm edema, peripheral blood circulation, and patient discomfort through palpation, visual observation, and interview. Based on the results of the examination, medical professionals comprehensively assess the patient's postoperative care and adjust prescriptions such as medication, compression with hemostatic devices, and examinations. Postoperative patients may be required to adjust compression with hemostatic devices, adjust medication, and wear tight stockings on the upper arm. The risk and intervention decisions regarding postoperative bleeding status, upper arm edema, peripheral blood circulation, and other factors may vary depending on the medical professional's experience. To improve the efficiency of clinical procedures and the accuracy of postoperative care, it is desirable to accurately assess the patient's condition from multiple perspectives and provide appropriate interventions.

[0052] In contrast, in this embodiment, the medical system 1 checks the patient's vital signs and other information from multiple angles, as described above, and adjusts the hemostatic method and other measures based on the patient's condition. This configuration improves patient care and prevents complications after performing the necessary procedures on the lesion site from the puncture site in the radial artery, etc. Furthermore, data acquisition by the medical device 100 can automatically collect information necessary for making decisions at set intervals, etc.

[0053] By automatically collecting the information necessary for judgment in this way, the workload of medical professionals can be reduced. Furthermore, the judgment method is multifaceted and based on criteria recorded in the acquisition unit 20, etc., and is not dependent on a specific individual, so a better medical experience can be provided to patients. Furthermore, by automatically collecting the information described above, patients can use the medical device 100 without worry, even if they are not in a medical institution such as a hospital, without relying on a medical professional.

[0054] The control unit 50 is also configured to calculate a compression protocol that defines the compression method and adjust the compression method based on the compression protocol. This configuration allows the multiple pieces of biological information acquired by the acquisition unit 20 to be accurately reflected in the adjustment of the compression method.

[0055] The acquisition unit 20 also acquires first information including at least one of the outer diameter of a medical instrument, such as a sheath, inserted into the patient during the procedure and the diameter of the patient's blood vessel. The notification unit 30 is configured to notify the patient of an intervention method for treating internal bleeding or the like when the score calculated from the first information is greater than a first threshold value V1. This configuration allows intervention other than compression of the hemostasis site to be performed, thereby improving postoperative patient care and preventing complications.

[0056] Furthermore, the control unit 50 adjusts the compression method so that it changes from the initial setting when the patient's oxygen saturation level is equal to or lower than the second threshold V2. This configuration allows the compression method for the hemostasis site to be adjusted according to the patient's latest health condition, thereby improving postoperative patient care and preventing complications.

[0057] Furthermore, the comparison of the patient's oxygen saturation with the second threshold V2 is performed when the patient's peripheral temperature is equal to or lower than the third threshold V3. This configuration allows the necessity of changing the compression method to be determined after determining the likelihood of a high ischemic risk, thereby improving the accuracy of adjustment of the compression method.

[0058] Furthermore, the medical system 1 is configured such that the acquisition unit 20 records the compression method used by the control unit 50 and the intervention method notified to the patient. This configuration makes it possible to accumulate clinical data and collect information as evidence of management methods in order to standardize postoperative patient management.

[0059] (Variation 1 of First Embodiment) Figure 6 is a flowchart for determining whether to adjust the compression method according to a variation of the first embodiment. In the first embodiment, the patient's peripheral temperature is measured, and the compression method is adjusted when the patient is at high risk of ischemia and the oxygen saturation is equal to or greater than a threshold. However, the determination to adjust the compression method can also be made as follows. Note that this variation differs from the first embodiment in the adjustment of the compression protocol, but other aspects, including the determination to adjust the anticoagulant (see Figure 5), are similar to the first embodiment, and therefore will not be described again.

[0060] The notification unit 30 presents a clinical assessment scale on the display as input of information necessary for determining the patient's postoperative pain level (ST21).

[0061] Such questions can be programmed to allow answers to questions such as clinical comfort, ease of use, and perioperative recovery assessment scales, which are traditionally used in clinical settings, to be answered via the touchscreen of the smartwatch.

[0062] An example of a clinical evaluation scale is the four-level scale for "pain" described in "Evaluation of Urological Surgery Following Enhanced Recovery Protocol Using the Japanese Version of the Quality of Recovery score (QoR-40J (www.keiju.co.jp / manage / files / iryo / magazine_Vol.9_2021 / 2021_09_08miyagi.pdf)"): "0: no pain at all," "1: slight nausea," "2: severe nausea," and "3: vomiting."

[0063] Another example of a clinical assessment scale, i.e., a comfort score, can be the Kolcaba Comfort Scale, which includes four major dimensions (physiological, psychological, environmental, and social) and uses a total of 35 items and a Likert 4 rating system. Another example of a clinical assessment scale, i.e., perioperative indicators, can be pain, postoperative vomiting and nausea, recovery quality of life (QOL) scale, gastrointestinal recovery, exercise, sleep quality, etc., which can be used as comfort outcome indicators. The acquisition unit 20 can record a program or the like that can notify the patient (user of the medical device) of the above questions and answers via a touch screen.

[0064] The patient answers the questions by voice or on the screen (acquisition of biometric information, ST22). If the patient answers by voice, the acquisition unit 20 activates the microphone, and the control unit 50 compares the acquired voice with recorded voice data to identify the voice data that is most similar. In addition, if the control unit 50 identifies characters from the patient's voice, it can identify characters from input voice using deep learning or the like. Such information processing can utilize known voice recognition technology. If the patient answers the questions via a touch screen, the control unit 50 detects the touched area of ​​the touch screen associated with the notification unit 30 and determines the answer to the question.

[0065] Once the patient has answered all the questions regarding comfort, the results for each question are tallied and the control unit 50 calculates the results for multiple scales (ST23). The answers to each question are structured as comfortable, normal, uncomfortable, etc., and a numerical value is assigned such that comfortable is 3, normal is 2, uncomfortable is 1, and if the answer is "yes" or "no," "yes" is 1 and "no" is 0. The answers to each question are tallied and a total value (third score) is calculated.

[0066] If the total comfort level is greater than the seventh threshold value V7 (ST24: YES), the patient's postoperative comfort level is deemed to be above a certain level, and the intervention related to the comfort level is not changed, and the result is recorded in the acquisition unit 20 (ST25).

[0067] If the answer score to the comfort level questions is below the seventh threshold V7 (ST24: NO), the control unit 50 records the answers to the questions and the scores in the acquisition unit 20, calculates the compression protocol as in the first embodiment, and adjusts the amount of decompression each time, the frequency of decompression, etc. as the compression method.

[0068] If the score falls below the seventh threshold V7, it is highly likely that the patient is more mentally fatigued than expected, so adjustments can be made, such as lowering the amount of decompression from the initial setting or lengthening the frequency of decompression. A table in which the compression time interval and the amount of decompression per session are gradually changed according to the range of scores for the comfort level questions is recorded in the acquisition unit 20, and the control unit 50 compares the patient's actual total value with the table to calculate a compression protocol and adjust the compression method (ST26).

[0069] 6 can be recorded as a program in the acquisition unit 20. The program may be pre-recorded in the medical device, or may be configured so that the wearer can download it from the server 200.

[0070] In this modification, the control unit 50 adjusts the compression method when a score calculated based on the patient's responses to questions about at least one of pain, vomiting, nausea, and physical condition after a procedure involving puncture of an artery in the upper limb, such as the radial artery, exceeds a seventh threshold V7. This configuration makes it possible to control compression of the hemostasis site so that it does not place too much strain on the patient's mental (psychological) state, thereby improving postoperative care for the patient and preventing complications.

[0071] Second Embodiment Figure 7 is a flowchart related to the determination of compression method adjustment and anticoagulant administration by a medical system according to a second embodiment. In the first embodiment, the determination of compression method and anticoagulant administration was based on different acquired information, such as peripheral temperature and medical instrument diameter acquired by the acquisition unit. However, the adjustment of compression method and anticoagulant administration may also be based on the following information. Note that the contents other than the adjustment of compression protocol and anticoagulant administration are the same as those in the first embodiment, and therefore common descriptions will be omitted.

[0072] First, the acquisition unit 20 acquires information (second information) about the anticoagulant and therapeutic drug to be administered to the patient from the server 200 via the network N (acquisition of biological information, ST31). The information about the anticoagulant and therapeutic drug can be recorded in the server 200 before the patient is discharged from a medical institution such as a hospital.

[0073] Next, the control unit 50 calculates an expected hemostasis time from information on the anticoagulant, therapeutic drug, etc. (ST32). The expected hemostasis time can be determined by recording correspondence data on the dosage of the therapeutic drug or anticoagulant, the anticoagulation time of various anticoagulants, and the expected hemostasis time for blood vessel diameter, etc. from the server 200 to the acquisition unit 20, and comparing the data on the therapeutic drug, anticoagulant, blood vessel diameter, etc. used for the target patient with the above data in the acquisition unit 20.

[0074] Next, the control unit 50 compares the predicted hemostasis time calculated using Equation 1 with a preset fifth threshold V5 to determine whether it is greater or smaller (ST33). For example, heparin is typically administered at 100 units / kg / h before or during surgery, but in cases with a high risk of stent thrombosis, multiple types of anticoagulants are administered. When anticoagulants are administered at the 100 units / kg / h rule, hemostasis can usually be achieved within approximately four hours after surgery. On the other hand, when more than 100 units / kg / h are administered or multiple types of anticoagulants are administered, hemostasis for more than four hours is required. Generally, the more potent the anticoagulant or therapeutic agent, the longer the predicted hemostasis time.

[0075] If the predicted hemostasis time is below the fifth threshold V5 (ST33: NO), the control unit 50 determines that the patient's risk of bleeding is relatively low and records information about the anticoagulant used to calculate the predicted hemostasis time and information about the predicted hemostasis time in the acquisition unit 20 (ST34).

[0076] If the predicted hemostasis time is greater than the fifth threshold V5 (ST33: YES), the control unit 50 determines that the risk of bleeding is high (ST35) and causes the acquisition unit 20 to acquire the activated clotting time (ACT) (acquisition of biological information, ST36). The control unit 50 then calculates a score (second score) relating to the risk of vascular occlusion from the ACT (ST37). The radial artery occlusion rate (RAO) relative to the ACT tends to decrease as the ACT increases until the ACT reaches a predetermined value, and once the predetermined value is exceeded, the RAO increases as the ACT increases. As an example, in this embodiment, the RAO corresponding to an ACT of 150 seconds and 250 seconds according to Fig. 3 in "The Activated Clotting Time Paradox" by Andrea Pacchioni et al. may be set as the fourth threshold. The RAO corresponding to an ACT of 150 seconds and 250 seconds is the same value, and the RAO may be less than the fourth threshold when the ACT is between 150 seconds and 250 seconds, and may be greater than or equal to the fourth threshold when the ACT is 150 seconds or less or 250 seconds or more. The control unit 50 compares the RAO (score) corresponding to the acquired ACT with the fourth threshold.

[0077] If the score is less than the fourth threshold V4 (ST38: NO), the control unit 50 determines that the patient's risk of vascular obstruction is relatively low, and records the calculated score as the ACT in the acquisition unit 20 (ST39).

[0078] If the score is equal to or greater than the fourth threshold V4 (ST38: YES), the control unit 50 determines that the patient has a relatively high risk of vascular obstruction (ST40), calculates a compression protocol for hemostasis (ST41), and adjusts the compression method based on the calculated compression protocol. As in the first embodiment, the compression protocol derives at least one of the amount of pressure reduction from the initial value and the timing of pressure reduction.

[0079] Furthermore, if the score is equal to or greater than a fourth threshold value V4, the control unit 50 presents (notifies) an anticoagulant recommendation via the notification unit 30 (ST42). If the risk of vascular obstruction is relatively high, the anticoagulant is set at a higher dose than the initial setting. The amount of anticoagulant to be taken can be determined by referencing a database or the like that stores in advance in the acquisition unit 20 the relationship between the calculated score and the corresponding dose. For example, the anticoagulant dose can be gradually changed by dividing the score into certain value categories and specifying the dose for each category.

[0080] 7 can be recorded as a program in the acquisition unit 20. The program may be pre-recorded in the medical device, or may be configured so that the wearer can download it from the server 200.

[0081] As described above, in this embodiment, the control unit 50 is configured to adjust the compression protocol when the second score calculated based on the second information such as the anticoagulant or therapeutic drug is equal to or greater than the fourth threshold V4, and the notification unit 30 is configured to notify the patient of how to take the anticoagulant, etc. In this way, by referencing the information on the anticoagulant or therapeutic drug used for the patient, it is possible to accurately predict the patient's condition after surgery and provide accurate patient care.

[0082] The second score related to the risk of obstruction is calculated when the hemostasis time predicted from the second information exceeds a fifth threshold V5. This configuration prevents or reduces unintended adjustments to the compression method or anticoagulant drug by medical professionals, thereby improving the accuracy of postoperative patient care.

[0083] (Third Embodiment) Figure 8 is a flowchart for determining whether to adjust the compression method and the anticoagulant according to the third embodiment. In the second embodiment, the predicted hemostasis time was calculated from information on the anticoagulant and therapeutic drug used in the patient, and if the risk of bleeding was low, the risk of vascular occlusion was calculated from the ACT, and then a determination was made as to whether to adjust the compression method and the anticoagulant. However, the following determinations can also be made regarding the adjustment of the compression method and the anticoagulant.

[0084] Because blood seepage causes swelling of the limb, in this embodiment, the perimeter of the puncture site (the circumference of the arm including the puncture site) is measured to determine the state of edema and determine whether to adjust medication or compression method. The acquisition unit 20 acquires information about the perimeter of the site where the medical device is attached (acquisition of biological information, ST51). Next, the control unit 50 compares the difference between the acquired perimeter of the attachment unit 60 of the medical device (puncture site) and a reference value with a sixth threshold V6 (ST52).

[0085] If the difference from the reference value is less than the sixth threshold value V6 (measured value < reference value) (ST52: NO), the control unit 50 determines that intervention regarding the hematoma is unnecessary, records information regarding the circumference and the difference in the acquisition unit 20, and does not perform intervention regarding the hematoma (ST53).

[0086] If the difference from the reference value exceeds the sixth threshold V6 (measured value > reference value), ST52: YES), the control unit 50 determines that intervention for the hematoma is necessary (ST54), adjusts the dosage of anticoagulant, and notifies the notification unit 30 (ST55), as in the first embodiment. The anticoagulant can be adjusted to suppress blood exudation. For example, in the case of a patient taking diuretics for edema, the amount of diuretic is adjusted. The amount of anticoagulant to be administered can be divided into fixed amounts based on the difference from the reference value, and the amount of anticoagulant to be administered can be set to increase gradually as the difference becomes farther from the reference value.

[0087] If the difference from the reference exceeds a sixth threshold V6 (ST52: YES), the control unit 50 determines that adjustment of the compression method is necessary, calculates a compression protocol (ST56), and adjusts the compression method based on the calculated compression protocol. As in the first embodiment, the compression protocol can specify the timing of decompression from the initial value and the amount of decompression at each decompression timing.

[0088] 8 can be recorded as a program in the acquisition unit 20. The program may be pre-recorded in the medical device, or may be configured so that the wearer can download it from the server 200.

[0089] As described above, this embodiment is configured to measure the circumference of the site where the medical device is attached, and adjust the anticoagulant and the compression method when the difference between the acquired circumference and a reference exceeds the sixth threshold V6. Because the circumference of the puncture site can increase or decrease depending on the condition of the patient's hemostasis site after surgery, adjusting the anticoagulant and the compression method based on this information can more accurately reflect the patient's condition after surgery and provide more accurate postoperative care.

[0090] The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the claims. In the first embodiment, the attachment unit 60 is described as adjusting the amount of compression at the compression site by filling and discharging a fluid such as air. However, as long as the amount of compression at the attachment site can be adjusted, the configuration of the attachment unit is not limited to the pump described above. A motor may be connected to the band of the winding unit 62, and the band may be wound up in response to the rotation of the motor, thereby increasing or decreasing the circumference of the band to adjust the amount of compression. When adjusting the compression force at the hemostasis site using the band, the rotation of the motor can increase the circumference of the band to decrease the compression force, or decrease the circumference of the band to increase the compression force.

[0091] In addition, in the first modification of the first embodiment, it has been described that the questions regarding the comfort level are answered by the touch screen of the acquisition unit 20 of the medical device 100 or by voice input. However, the answering of the questions is not limited to the above-mentioned medical device. The questions regarding the comfort level may be answered from a smartphone, tablet-type communication terminal, PC, or the like (hereinafter referred to as a smartphone, etc.) after a program for answering questions regarding the comfort level is installed on the smartphone, etc.

[0092] In the first embodiment, the notification unit 30 notifies the user of the salt deficiency and the amount of water intake based on the detection results of the sensor, but the notification of the salt deficiency and the amount of water intake does not have to be performed. The notification of the salt deficiency and the amount of water intake may be performed in the first modification of the first embodiment, the second embodiment, and the third embodiment.

[0093] In addition, in the first embodiment, it has been described that if the risk of internal bleeding is high, a notification is sent to family members, etc., but it may be configured not to notify family members, etc. In addition, in the second embodiment, if it is determined that the risk of bleeding is high, it may be configured to contact family members, etc., as in the first embodiment.

[0094] Furthermore, it has been explained that the medical device 100 sets, when a patient is discharged, which of the sensors described in the acquisition unit 20 is to function to be measurable. However, the sensors mounted on the medical device as acquisition units may be configured to be different for each patient.

[0095] (Fourth Embodiment) FIG. 9 is a diagram showing the external appearance of a medical system according to a fourth embodiment. The first attachment unit 60a is a disposable (single-use) tourniquet that can be wrapped around and secured to a patient's wrist or forearm. A hemostatic balloon is disposed inside the first attachment unit 60a. A balloon-side tube T1 is connected to the hemostatic balloon, and air can be injected into the hemostatic balloon through the inner lumen of the balloon-side tube T1. A tourniquet connector C1 is provided at the end of the balloon-side tube T1, to which a syringe or the like for injecting air can be connected. The connector has a valve that opens only when the syringe or the like is connected, preventing air from circulating when not connected. When air is injected into the hemostatic balloon with the first attachment unit 60a attached to the patient's wrist, the hemostatic balloon expands with air, compressing the puncture site with a needle or the like, thereby suppressing bleeding from the puncture site.

[0096] The second attachment section 60b (corresponding to the attachment section) of the medical device 100b can also be secured and attached by wrapping it around the patient's wrist or forearm. The second attachment section 60b is attached to the same hand as the first attachment section 60a. Preferably, the second attachment section 60b is located more distally than the first attachment section 60a to sense conditions downstream of the artery, although this is not essential. The second attachment section 60b is equipped with an acquisition section 20, a solenoid valve, a control section 50, a power supply section 10, an air pump, and a second attachment section side tube T2. The acquisition section 20 includes an oxygen saturation sensor and an air pressure sensor. The oxygen saturation sensor can measure the oxygen saturation of blood flowing through the radial artery in the patient's forearm. The tip of the second attachment section side tube T2 is equipped with a connector C2 that can be connected to the tourniquet connector C1 of the balloon side tube T1. The connector C2 can open the valve in the tourniquet connector when connected, similar to a syringe. In this state, driving the air pump can fill the balloon of the tourniquet with air. A solenoid valve is connected to the proximal end of the second attachment tube T2. With the hemostatic balloon filled with air and the hemostatic balloon tube and the second attachment tube T2 connected, opening the solenoid valve by operating the solenoid valve's opening / closing unit with an actuator releases air from the hemostatic balloon, reducing its pressure. The amount of pressure reduction can be adjusted by adjusting the time the solenoid valve is open. The air pressure sensor can measure the air pressure in the second attachment tube. The control unit 50 can adjust the amount of pressure reduction based on the measured air pressure and the elapsed time since compression by the hemostatic balloon began. The control unit 50 may control the opening and closing of the solenoid valve based on a predetermined compression protocol.

[0097] If the radial artery is compressed by the hemostatic balloon for a long period of time, there is a risk of the radial artery becoming blocked. If the oxygen saturation measured by the oxygen saturation sensor falls below a reference value for a predetermined period of time, the control unit determines that there is a risk of radial artery blockage and opens the solenoid valve to release air and reduce pressure, thereby reducing the compression.

[0098] The first mounting part 60a and the second mounting part 60b can be separated by disconnecting the balloon side tube T1 and the second mounting part side tube T2. After treatment, the first mounting part 60a may be stained with a large amount of the patient's blood. Therefore, it is difficult or impossible to reuse the first mounting part 60a. However, the second mounting part 60b, which is equipped with expensive components such as the control part 50, the acquisition part 20, the solenoid valve, and the power supply part 10, can be separated from the first mounting part 60a, sterilized, and reused.

[0099] According to this embodiment, the first mounting portion 60a and the second mounting portion 60b can be separated, which has the advantage that the second mounting portion 60b, which is provided with expensive parts, can be reused.

[0100] This application is based on Japanese Patent Application No. 2022-088683, filed on May 31, 2022, the disclosure of which is incorporated herein by reference in its entirety.

[0101] 1 Medical system, 20 Acquisition unit (recording unit), 30 Notification unit, 50 Control unit (compression control unit), 60a First attachment unit (tourniquet), 60b Second attachment unit (attachment unit), 100 Medical device 100b Medical device (medical device in which the attachment unit can be connected to and disconnected from the tourniquet).

Claims

1. an acquisition unit that acquires a plurality of pieces of biological information relating to a condition of a patient who has undergone a procedure involving puncture of an artery of an upper limb; A medical system having a compression control unit that can adjust a compression method for stopping bleeding of the patient based on multiple pieces of bioinformation regarding the patient's condition acquired from the acquisition unit, and a notification unit that can notify an intervention method based on the bioinformation.

2. The medical system according to claim 1 , wherein the compression control unit calculates a compression protocol that defines the compression method, and adjusts the compression method based on the compression protocol.

3. the acquisition unit acquires first information including at least one of a dimension of a portion of a medical instrument used in the procedure that is inserted into the patient and a blood vessel diameter of the patient; The medical system according to claim 1 or 2, wherein the notification unit notifies the patient of the modified intervention method when the first score calculated based on the first information is greater than a first threshold value.

4. The medical system according to claim 1 , wherein the compression control unit adjusts the compression method when the oxygen saturation of the patient is equal to or lower than a second threshold.

5. The medical system of claim 4 , wherein the comparison of the oxygen saturation of the patient with the second threshold is performed when the peripheral temperature of the patient is equal to or lower than a third threshold.

6. 3. The medical system according to claim 1, wherein when a second score calculated based on second information including at least one of a therapeutic drug used for the patient and a dosage of an anticoagulant becomes equal to or greater than a fourth threshold value, the compression control unit adjusts the compression method, and the notification unit notifies the patient of the revised intervention method.

7. The medical system according to claim 6 , wherein the second score is calculated when the hemostasis time predicted from the second information exceeds a fifth threshold value.

8. The acquisition unit acquires a circumference of a puncture site of the patient, The medical system according to claim 1 or 2, wherein the compression control unit adjusts the compression method when the difference between the circumference and a reference exceeds a sixth threshold value.

9. The medical system according to claim 1 or claim 2, wherein the compression control unit adjusts the compression method when a third score calculated based on the patient's responses to questions regarding at least one of the patient's pain, vomiting, nausea, and physical condition after the procedure involving puncturing an artery of the upper limb is equal to or less than a seventh threshold.

10. The medical system according to claim 1 , further comprising a recording unit that records the compression method applied to the patient by the compression control unit and the intervention method notified to the patient.

11. an acquisition unit that acquires a plurality of pieces of biological information relating to a condition of a patient who has undergone a procedure involving puncture of an artery of an upper limb; A medical device that can be worn on the wrist of a patient and has: a compression control unit that can adjust a compression method for stopping bleeding on the patient based on multiple pieces of biometric information regarding the patient's condition acquired from the acquisition unit; and a notification unit that can notify of the intervention method adjusted from the biometric information.

12. Acquire multiple pieces of vital signs related to the condition of a patient who has undergone a procedure involving puncture of an artery in the upper limb; A program that adjusts the compression method for stopping the bleeding of the patient based on the multiple pieces of biometric information regarding the patient's condition obtained, and adjusts the intervention method for the patient.

13. A medical device having a balloon capable of compressing a puncture site of a patient and usable with a tourniquet that can be worn on the wrist or forearm of the patient, an acquisition unit that acquires a plurality of pieces of biological information related to the condition of the patient who has undergone a procedure involving puncturing an artery of the upper limb; a compression control unit that can adjust a compression method for stopping the bleeding of the patient based on the plurality of biological information related to the condition of the patient acquired from the acquisition unit, and a wearing unit that can be worn on a wrist or a forearm of the patient; A medical device, wherein the tourniquet and the attachment portion are connectable and detachable.