WO2023078151A1

WO2023078151A1 - Bracelet-type anterior wall artery puncture postoperative binding device having blood flow monitoring functionality

Info

Publication number: WO2023078151A1
Application number: PCT/CN2022/127917
Authority: WO
Inventors: 郭宝春; 熊洪涛
Original assignee: 深圳市人民医院
Priority date: 2021-11-02
Filing date: 2022-10-27
Publication date: 2023-05-11
Also published as: CN216876486U

Abstract

A bracelet-type anterior wall artery puncture postoperative binding device having blood flow monitoring functionality, comprising a bracelet shell (10), a hemostatic plate (20), a control circuit board (30), and a patch block (40). A miniature ultrasonic blood flow detection module (401) is disposed on a lower surface of the patch block (40), and the patch block (40) is used to tightly attach to a hand of a patient, so as to detect arterial blood flow at a wound by means of the miniature ultrasonic blood flow detection module (401), the miniature ultrasonic blood flow detection module (401) being connected to the control circuit board (30) in a wired or wireless manner; the control circuit board (30) is provided with an alarm module (301), the alarm module being connected to a control module (U1), and when the control module (U1) detects an anomaly in the blood flow by means of the miniature ultrasonic blood flow detection module (401), an alarm prompt is given by the alarm module (301). When the hemostatic plate (20) deviates from the wound, an acceleration in the arterial blood flow can be detected. The patient is prompted by means of an alarm to move the hemostatic plate (20) in the correct direction, so as to block the wound.

Description

Bandage device with blood flow monitoring after anterior wall arterial puncture

technical field

The utility model relates to the technical field of medical devices, in particular to a bracelet-type bandaging device after anterior wall artery puncture with blood flow monitoring.

Background technique

In today's society, coronary heart disease has become the first killer of human beings, and percutaneous transluminal coronary angioplasty (PTCA) has been called one of the main means of coronary heart disease treatment. There are two kinds of puncture approaches: femoral artery and radial artery. Femoral artery puncture has many inconveniences and disadvantages; radial artery puncture is better. After the above puncture, it is necessary to compress the radial artery for a long time to achieve the effect of hemostasis.

Wherein, a better hemostatic effect can be achieved by applying proper pressure on the wound through the hemostatic plate. However, during the daily activities of the patient, the hemostatic plate may be moved, resulting in the ineffective closure of the wound and bleeding. Especially at night, when the patient is sleeping, the hemostatic plate may shift, causing serious bleeding problems.

Utility model content

The utility model aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, an object of the present utility model is to propose a wrist-band type bandaging device after anterior wall arterial puncture with blood flow monitoring.

In order to achieve the above purpose, according to the wristband-type bandaging device after anterior wall artery puncture with blood flow monitoring according to the embodiment of the present invention, the wristband-type bandaging device after anterior wall artery puncture with blood flow monitoring includes:

The bracelet shell, the two sides of the bracelet shell are provided with fixing belts;

a hemostatic plate, the hemostatic plate is fixedly connected to the bottom of the bracelet housing;

A control circuit board, the control circuit board is arranged in the bracelet housing, and a control module is arranged on the control circuit board;

A patch, the lower surface of the patch is provided with a micro-ultrasonic blood flow detection module, and the patch is used to stick to the patient's hand, so as to measure the arterial blood flow at the wound through the micro-ultrasonic blood flow detection module detection, the micro-ultrasonic blood flow detection module is connected to the control circuit board through wired or wireless means;

An alarm module is provided on the control circuit board, and the alarm module is connected to the control module. When the control module detects that the blood flow is abnormal through the micro-ultrasonic blood flow detection module, it sends an alarm through the alarm module. hint.

Further, according to an embodiment of the present utility model, the upper surface of the patch is fixed with a resistance block with a set area:

A first conductive column and a second conductive column are provided on the control circuit board corresponding to the resistance block, and the first conductive column and the second conductive column are respectively connected to the control module;

The control module obtains the offset of the hemostatic plate through the offset between the first conductive column and the second conductive column and the resistance block.

Further, according to an embodiment of the present utility model, the bracelet-type bandaging device after anterior wall arterial puncture with blood flow monitoring further includes: the resistance block includes a first circular metal block.

Further, according to an embodiment of the present utility model, the resistance module further includes:

a first annular metal block, the first annular metal block is arranged outside the first circular metal block;

a second ring-shaped metal block, the second ring-shaped metal block is arranged outside the first ring-shaped metal block;

The resistance values per unit length of the first circular metal block, the first annular metal block and the second annular metal block are different values.

Further, according to an embodiment of the present invention, the control circuit board is further provided with a first spring and a second spring, and one end of the first conductive column is connected to the control circuit board through the first spring , one end of the second conductive post is connected to the control circuit board through the second spring.

Further, according to an embodiment of the present invention, a second round metal block and a third round metal block are fixed on the upper surface of the patch:

A third conductive column is provided on the control circuit board at a position corresponding to the second circular metal block;

A fourth conductive column is provided on the control circuit board at a position corresponding to the third circular metal block;

The control circuit board is also provided with a third spring and a fourth spring, one end of the third conductive column is connected to the control circuit board through the third spring, and one end of the fourth conductive column is connected to the control circuit board through the The fourth spring is connected with the control circuit board;

The miniature ultrasonic blood flow detection module is connected to the control module by wires through the second circular metal block, the third circular metal block, the third conductive post and the fourth conductive post respectively.

Further, according to an embodiment of the present utility model, the bracelet-type bandaging device after anterior wall arterial puncture with blood flow monitoring further includes:

The first pressure detection module, the hemostatic plate is fixedly connected to the bottom of the wristband housing through the first pressure detection module, and the first pressure detection module is also electrically connected to the control module to control the Pressure detection of the hemostatic plate.

A second pressure detection module, the second pressure detection module is fixedly connected to the wristband housing through the connecting column, so as to detect the arterial pressure at the wound through the second pressure detection module.

Further, according to an embodiment of the present utility model, the control circuit board further includes:

LCD display module, the LCD display module is connected with the control module to detect the pressure of the hemostatic plate, arterial blood flow, arterial pressure and/or arterial frequency.

Further, according to an embodiment of the present invention, the alarm module includes:

buzzer;

The first MOS transistor (Q1), the source of the first MOS transistor (Q1) is connected to the power supply through a first resistor (R3), and the source of the first MOS transistor (Q1) is also connected through a second resistor ( R5) and the third resistor (R4) are connected to the gate of the first MOS transistor (Q1), and the drain of the first MOS transistor (Q1) is connected to the buzzer;

A second MOS transistor (Q2), the source of the second MOS transistor (Q2) is connected to the reference ground, and the drain of the second MOS transistor (Q2) is connected to the first resistor (R4) through the third resistor (R4). The gate of a MOS transistor (Q1) is connected, and the gate of the second MOS transistor (Q2) is connected with the signal output end of the control module through a fourth resistor (6).

The wristband-type anterior wall arterial puncture postoperative dressing device with blood flow monitoring provided by the embodiment of the utility model is equipped with a micro-ultrasonic blood flow detection module through the lower surface of the patch, and the patch is used to be attached to the patient's hand, to detect the arterial blood flow at the wound through the miniature ultrasonic blood flow detection module, which is connected to the control circuit board by wired or wireless; the control circuit board is provided with an alarm module, the alarm module is connected to the control module, and when the control module detects that the blood flow is abnormal through the micro-ultrasonic blood flow detection module, it will give an alarm prompt through the alarm module. In this way, increased arterial blood flow can be detected when the hemostatic plate is deflected away from the wound. The alarm is used to prompt the patient to move the hemostatic plate to seal the wound.

Description of drawings

Fig. 1 is a schematic diagram of the structure of a wristband type anterior wall arterial puncture postoperative dressing device provided by the embodiment of the present invention;

Fig. 2 is another schematic diagram of the structure of the bracelet-type anterior wall arterial puncture postoperative dressing device provided by the embodiment of the present invention;

Fig. 3 is a structural schematic diagram of the electrical connection between the control circuit provided by the embodiment of the present invention and the metal sheet on the sticker through the conductive column;

Fig. 4 is a block diagram of the circuit structure of another bracelet-type anterior wall arterial puncture dressing device provided by the embodiment of the present invention;

Fig. 5 is a schematic diagram of the circuit structure of another bracelet-type anterior wall arterial puncture dressing device provided by the embodiment of the present invention;

Reference signs:

Bracelet shell 10;

Fixing strap 101;

Hemostatic plate 20;

Control circuit board 30;

Alarm module 301;

The first pressure detection module 302;

The second pressure detection module 303;

LCD display module 304;

the first conductive pillar 305;

first spring 3051;

the second conductive pillar 306;

second spring 3061;

The third conductive pillar 307;

third spring 3071;

The fourth conductive column 308;

fourth spring 3081;

tile 40;

Miniature ultrasonic blood flow detection module 401;

Resistance block (the first circular metal block) 402;

The first annular metal block 4021;

the second circular metal block 403;

The third circular metal block 404 .

Detailed ways

Preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, so that the purpose, characteristics and advantages of the utility model can be more clearly understood. It should be understood that the embodiments shown in the accompanying drawings are not intended to limit the scope of the utility model, but only to illustrate the spirit of the technical solutions of the utility model.

Referring to Fig. 1 to Fig. 5, the embodiment of the present utility model provides a bracelet-type bandaging device after anterior wall arterial puncture with blood flow monitoring, including: a wristband housing 10, a hemostatic plate 20, a control circuit board 30 and a plate Sticker piece 40, the both sides of described bracelet housing 10 are provided with fixed belt 101; As shown in Figure 1 and Figure 2, be fixed on one side of described wristband housing 10 by one end of described fixed belt 101 s position. When in use, the other end of the fixing band 101 can pass through the fixing ring on the other side of the wristband housing 10, and be closely attached to the other end of the fixing band 101, so as to fix the wristband housing 10 on the patient's wrist.

The hemostatic plate 20 is fixedly connected to the bottom of the wristband housing 10; since the hemostatic plate 20 is fixedly connected to the bottom of the wristband housing 10, the wristband housing 10 is tightened by the fixing belt 101 , can drive the hemostatic plate 20 to press down to the wound, and apply a certain pressure to the wound. The hemostatic plate 20 can be flexible, so as to avoid hard contact between the hemostatic plate 20 and the wound, so as to better seal the wound.

The control circuit board 30 is disposed in the bracelet housing 10 , and the control circuit board 30 is provided with a control module U1 . Various other circuit modules are controlled through the control module U1. Said can be single-chip microcomputer module, zigbee module, bluetooth module or WIFI module etc.

The lower surface of the patch 40 is provided with a miniature ultrasonic blood flow detection module 401, and the patch 40 is used to stick to the patient's hand, so that the arterial blood at the wound can be detected by the miniature ultrasonic blood flow detection module 401. For flow detection, the micro-ultrasonic blood flow detection module 401 is connected to the control circuit board 30 through wired or wireless means; the patch 40 is made of a flexible sheet material. When in use, it is placed close to the wound by sticking to the patient's wrist. Since the micro-ultrasonic blood flow detection module 401 is provided under the patch 40, the micro-ultrasonic blood flow detection module 401 is located at the artery. Through the principle of measuring the velocity of the fluid by ultrasound, the blood flow of the artery can be measured in real time. And the measurement result is sent to the control circuit board 30 in a wired or wireless manner, so that the control circuit board 30 can obtain blood flow information of the artery. The wireless transmission method may be Bluetooth, WIFI or zigbee.

The control circuit board 30 is provided with an alarm module 301, and the alarm module 301 is connected to the control module U1. When the control module U1 detects abnormal blood flow through the micro-ultrasonic blood flow detection module 401, The alarm module 301 provides an alarm prompt. When the hemostatic plate 20 does not deviate from the wound, the blood flow in the artery flows at a certain flow rate. When the hemostatic plate 20 deviates from the wound, since the wound is not blocked, blood may leak from the wound, resulting in a large blood flow. The micro-ultrasonic blood flow detection module 401 sends the detected blood information to the control circuit board 30. When the control circuit board 30 detects a large blood flow, the control alarm module 301 sends an alarm prompt to remind the patient or the medical staff to timely For processing, move the hemostatic plate 20 upright to seal the wound. Avoid excesses.

The wristband-type anterior wall arterial puncture postoperative dressing device with blood flow monitoring provided by the embodiment of the utility model has a micro-ultrasonic blood flow detection module 401 on the lower surface of the patch 40, and the patch 40 is used for sticking to the hand of the patient to detect the arterial blood flow at the wound through the miniature ultrasonic blood flow detection module 401, and the miniature ultrasonic blood flow detection module 401 is connected with the control circuit board 30 by wired or wireless means; An alarm module 301 is provided on the circuit board 30, and the alarm module 301 is connected to the control module U1. When the control module U1 detects abnormal blood flow through the micro-ultrasonic blood flow detection module 401, Module 301 gives an alarm prompt. In this way, when the hemostatic plate 20 is displaced from the wound, an increase in arterial blood flow can be detected. The alarm is used to prompt the patient to move the hemostatic plate 20 to seal the wound.

A resistance block 402 with a predetermined area is fixed on the upper surface of the patch 40: in one embodiment of the present invention, the resistance block 402 is a circular metal block. The size of the circular metal block can be similar to or the same size as the hemostatic plate 20 . A circular metal block is disposed on the upper surface of the patch 40 . Since the patch 40 is tightly attached to the wrist, the position of the circular metal block is also relatively fixed.

The position corresponding to the resistance block 402 on the control circuit board 30 is provided with a first conductive column 305 and a second conductive column 306, and the first conductive column 305 and the second conductive column 306 are connected with the control module respectively. U1 connection; as shown in FIG. 1 and FIG. 3 , the first conductive pillar 305 and the second conductive pillar 306 are respectively located in the middle of the circular metal block. In this way, when the bracelet housing 10 deviates, the hemostatic plate 20 and the first conductive post 305 and the second conductive post 306 will be driven to deviate at the same time.

The control module U1 obtains the offset of the hemostatic plate 20 through the offset between the first conductive column 305 and the second conductive column 306 and the resistance block 402 . When the ends of the first conductive pillar 305 and the second conductive pillar 306 are located on the upper surface of the circular metal block, the first conductive pillar 305 and the second conductive pillar 306 can be connected to each other. The control module U1 detects that the first conductive post 305 and the second conductive post 306 are still in the conduction state, which means that the first conductive post 305 and the second conductive post 306 have not deviated from the circular metal block . At this time, it shows that the hemostatic plate 20 that deviates simultaneously with the first conductive post 305 and the second conductive post 306 does not deviate from the wound. When the first conductive pillar 305 and/or the second conductive pillar 306 deviates from the circular metal block, the first conductive pillar 305 and the second conductive pillar 306 may not be electrically connected. When the control module U1 detects that there is no conduction between the first conductive post 305 and the second conductive post 306, it means that the first conductive post 305 and/or the second conductive post 306 has deviated from the circular metal block . Because the hemostatic plate 20 moves synchronously under the action of the bracelet housing 10 . In this way, it can be judged that the hemostatic plate 20 also deviates by a corresponding distance. According to the diameter of the circular metal block, the corresponding deviation distance of the hemostatic plate 20 can be obtained. In other embodiments, the resistance block 402 may also adopt other shapes, such as a square and a rectangle. In other embodiments, the resistance block 402 includes not only the first round metal block, but also the resistance module includes: a first ring metal block 4021 and a second ring metal block, and the first ring metal block 4021 is set on The outer side of the first circular metal block; the second annular metal block is arranged on the outer side of the first annular metal block 4021; the first circular metal block, the first annular metal block 4021 and the second annular metal block The resistance value per unit length of the metal block is different. Through multiple rings of metal blocks connected, the rings can be isolated by insulation to avoid mutual conduction. The size of the outer ring metal block can be the same or similar to the size of the hemostatic plate 20. In this way, by further subdividing the metal block, the offset distance between the first conductive post 305 and the second conductive post 306 can be realized more precisely. Measurement. Specifically, referring to FIG. 5, the resistance of each metal block is different, such as resistance RX1, resistance RX2, resistance RX3 and resistance RX4. When different resistance values are detected by the control module U1, the first conductive column 305 can be obtained. and the offset position of the second conductive pillar 306 . In this way, the offset of the hemostatic plate 20 can be better quantified and displayed on a display device, which is convenient for patients or medical personnel to adjust. It should be noted that the circular metal block can be divided into multiple ring-shaped metal blocks according to actual needs, so as to measure the offset more accurately.

The control circuit board 30 is also provided with a first spring 3051 and a second spring 3061, one end of the first conductive post 305 is connected to the control circuit board 30 through the first spring 3051, and the second conductive One end of the post 306 is connected to the control circuit board 30 through the second spring 3061 . By setting the first spring 3051 and the second spring 3061 at the ends of the first conductive pillar 305 and the second conductive pillar 306 respectively, the elastic force of the spring is passed. The first conductive pillar 305 and the second conductive pillar 306 can be elastically contacted with the metal block. Avoid poor contact. Thereby reducing the occurrence of misjudgments and false alarms.

A second round metal block 403 and a third round metal block 404 are also fixed on the upper surface of the sticker 40: a position corresponding to the second round metal block 403 on the control circuit board 30 is provided with The third conductive column 307; the fourth conductive column 308 is provided on the position corresponding to the third circular metal block 404 on the control circuit board 30; the miniature ultrasonic blood flow detection module 401 passes through the second The circular metal block 403, the third circular metal block 404, the third conductive post 307 and the fourth conductive post 308 are connected to the control module U1 by wire, so that the detection signal of the miniature ultrasonic blood flow detection module 401 can be transmitted by wire. to the control circuit board 30 . In other embodiments, another two circular metal blocks and corresponding conductive posts can also be provided to introduce the power of the control circuit board 30 into the patch 40 , so as to supply power to the electronic devices in the patch 40 .

The control circuit board 30 is also provided with a third spring 3071 and a fourth spring 3081, one end of the third conductive column 307 is connected to the control circuit board 30 through the third spring 3071, and the fourth conductive One end of the column 308 is connected to the control circuit board 30 through the fourth spring 3081; a third spring 3071 and a fourth spring 3081 are respectively provided at the ends of the third conductive column 307 and the fourth conductive column 308 , by the elastic force of the spring. The third conductive pillar 307 and the fourth conductive pillar 308 can be elastically contacted with the metal block. Avoid poor contact. Thereby reducing the occurrence of signal transmission interruption.

The wristband-type bandage device after anterior wall arterial puncture with blood flow monitoring also includes: a first pressure detection module 302, and the hemostatic plate 20 is connected to the wristband housing 10 through the first pressure detection module 302. The bottom of the hemostatic plate 20 is fixedly connected, and the first pressure detection module 302 is also electrically connected with the control module U1 to detect the pressure of the hemostatic plate 20 . In the control of the hemostatic plate 20, it is very important to control the hemostatic pressure. If the hemostatic pressure is too small, it will cause hemostasis failure. In the case of bleeding from the patient's incision, if the pressure is too high, it will easily lead to reactions such as blood flow blockage and arterial thrombosis. The control circuit board 30 also includes: an LCD display module 304 connected to the control module U1 to detect the pressure of the hemostatic plate 20 , arterial blood flow, arterial pressure and/or arterial frequency. Through the first pressure detection module 302 , the applied pressure of the hemostatic plate 20 can be collected, and the pressure value can be displayed through the LCD display module 304 , so that the pressure can be adjusted through the fixing belt 101 . The LCD display module 304 acquires the offset positions of the first conductive column 305 and the second conductive column 306 . And display the offset. In order to facilitate patients or medical staff to correct.

The bandaging device after blood flow monitoring wristband anterior wall arterial puncture also includes: a second pressure detection module 303, which is fixedly connected to the wristband housing 10 through a connecting column, so as to The arterial pressure at the wound is detected by the second pressure detection module 303 . Through the second pressure detection module 303, when installed, the arterial pressure at the wound is detected. Since arteries are acquired, there is certain arterial information. And when there is a deviation, the second pressure detection module 303 also deviates from the artery, and the pressure sensor cannot detect the arterial signal. This can further assist the alarm prompt and improve the accuracy of the alarm.

The alarm module 301 includes: a buzzer, a first MOS transistor (Q1) and a second MOS transistor (Q2), the source of the first MOS transistor (Q1) is connected to a power supply through a first resistor (R3) , the source of the first MOS transistor (Q1) is also connected to the gate of the first MOS transistor (Q1) through a second resistor (R5) and a third resistor (R4), and the first MOS transistor ( Q1) the drain is connected to the buzzer; the source of the second MOS transistor (Q2) is connected to the reference ground, and the drain of the second MOS transistor (Q2) passes through the third resistor (R4) It is connected to the gate of the first MOS transistor (Q1), and the gate of the second MOS transistor (Q2) is connected to the signal output terminal of the control module U1 through a fourth resistor (6). The buzzer is driven by the first MOS transistor (Q1) and the second MOS transistor (Q2). Its working principle is that when the control module U1 detects that the hemostatic plate 20 is deviated, or the arterial blood flow is abnormal, it outputs a high-level signal through the P1.3 pin, and the high-level signal is output to the second MOS transistor (Q2), so that the second MOS transistor (Q2) is turned on, and the drain of the second MOS transistor (Q2) is turned on is a low level, which can make the first MOS transistor (Q1) turn on Through, the VCC3V3 power supply is output to the buzzer J2, thereby driving the buzzer J2 to send out an alarm sound. The alarm module 301 is relatively simple, realized by separate components, and the cost is relatively low.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model, and are not intended to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit of the technical solutions of the various embodiments of the present invention. and range.

Claims

A bracelet-type dressing device after anterior wall arterial puncture with blood flow monitoring, characterized in that it includes:

The bracelet shell, the two sides of the bracelet shell are provided with fixing belts;

a hemostatic plate, the hemostatic plate is fixedly connected to the bottom of the bracelet housing;

A control circuit board, the control circuit board is arranged in the bracelet housing, and a control module is arranged on the control circuit board;

A patch, the lower surface of the patch is provided with a micro-ultrasonic blood flow detection module, and the patch is used to stick to the patient's hand, so as to measure the arterial blood flow at the wound through the micro-ultrasonic blood flow detection module detection, the micro-ultrasonic blood flow detection module is connected to the control circuit board through wired or wireless means;

An alarm module is provided on the control circuit board, and the alarm module is connected to the control module. When the control module detects that the blood flow is abnormal through the micro-ultrasonic blood flow detection module, it sends an alarm through the alarm module. hint.
The bracelet-type anterior wall arterial puncture dressing device with blood flow monitoring according to claim 1, wherein a resistance block with a set area is fixed on the upper surface of the patch:

A first conductive column and a second conductive column are provided on the control circuit board corresponding to the resistance block, and the first conductive column and the second conductive column are respectively connected to the control module;

The control module obtains the offset of the hemostatic plate through the offset between the first conductive column and the second conductive column and the resistance block.
The bracelet-type dressing device after anterior wall arterial puncture with blood flow monitoring according to claim 2, further comprising: the resistance block includes a first circular metal block.
The bracelet-type anterior wall arterial puncture dressing device with blood flow monitoring according to claim 3, wherein the resistance block also includes:

a first annular metal block, the first annular metal block is arranged outside the first circular metal block;

a second ring-shaped metal block, the second ring-shaped metal block is arranged outside the first ring-shaped metal block;

The resistance values per unit length of the first circular metal block, the first annular metal block and the second annular metal block are different values.
According to claim 4, the bracelet-type bandaging device after anterior wall arterial puncture with blood flow monitoring is characterized in that a first spring and a second spring are also arranged on the control circuit board, and the first conductive One end of the post is connected to the control circuit board through the first spring, and one end of the second conductive post is connected to the control circuit board through the second spring.
The bracelet-type anterior wall arterial puncture bandaging device with blood flow monitoring according to claim 1, wherein a second circular metal block and a third circular metal block are also fixed on the upper surface of the patch. piece:

A third conductive column is provided on the control circuit board at a position corresponding to the second circular metal block;

A fourth conductive column is provided on the control circuit board at a position corresponding to the third circular metal block;

The control circuit board is also provided with a third spring and a fourth spring, one end of the third conductive column is connected to the control circuit board through the third spring, and one end of the fourth conductive column is connected to the control circuit board through the The fourth spring is connected with the control circuit board;

The miniature ultrasonic blood flow detection module is connected to the control module by wires through the second circular metal block, the third circular metal block, the third conductive post and the fourth conductive post respectively.
The bracelet-type anterior wall arterial puncture dressing device with blood flow monitoring according to claim 1, is characterized in that it also includes:

The first pressure detection module, the hemostatic plate is fixedly connected to the bottom of the wristband housing through the first pressure detection module, and the first pressure detection module is also electrically connected to the control module to control the Pressure detection of the hemostatic plate.
The bracelet-type anterior wall arterial puncture dressing device with blood flow monitoring according to claim 7, is characterized in that it also includes:

A second pressure detection module, the second pressure detection module is fixedly connected to the wristband housing through the connecting column, so as to detect the arterial pressure at the wound through the second pressure detection module.
According to claim 8, the bracelet-type anterior wall arterial puncture dressing device with blood flow monitoring is characterized in that the control circuit board also includes:

LCD display module, the LCD display module is connected with the control module to detect the pressure of the hemostatic plate, arterial blood flow, arterial pressure and/or arterial frequency.
The bracelet-type anterior wall arterial puncture dressing device with blood flow monitoring according to claim 1, wherein the alarm module comprises:

buzzer;

The first MOS transistor (Q1), the source of the first MOS transistor (Q1) is connected to the power supply through a first resistor (R3), and the source of the first MOS transistor (Q1) is also connected through a second resistor ( R5) and the third resistor (R4) are connected to the gate of the first MOS transistor (Q1), and the drain of the first MOS transistor (Q1) is connected to the buzzer;

A second MOS transistor (Q2), the source of the second MOS transistor (Q2) is connected to the reference ground, and the drain of the second MOS transistor (Q2) is connected to the first resistor (R4) through the third resistor (R4). The gate of a MOS transistor (Q1) is connected, and the gate of the second MOS transistor (Q2) is connected with the signal output end of the control module through a fourth resistor (6).