Ultrasound-based cardiac output measurement module and medical monitoring equipment

Abstract

The utility model discloses an ultrasound-based cardiac output measurement module and medical monitoring equipment, and the cardiac output measurement module comprises a module shell detachably connected to host equipment and a circuit board assembly arranged in the module shell, an ultrasonic probe interface and a signal transmission interface which are in communication connection with the circuit board assembly are embedded in the module shell, the ultrasonic probe interface is used for being connected with an ultrasonic probe, and the signal transmission interface is used for being in communication connection with a main processor in host equipment. The circuit board assembly comprises a parameter board used for controlling the ultrasonic probe to emit ultrasonic signals and obtaining cardiac output information according to returned ultrasonic echo signals. The cardiac output measurement module based on the ultrasound is inserted into the external installation space of the host shell in the form of an accessory module for use, the cardiac output measurement module based on the ultrasound is small in size, convenient to take and capable of being flexibly transferred, the whole equipment does not need to be pushed in the transferring process, and use is more convenient.

Description

Technical Field

[0001] This application relates to the field of ultrasound equipment technology, specifically to an ultrasound-based cardiac output measurement module and medical monitoring equipment. Background Technology

[0002] Hemodynamic monitoring is a crucial tool for monitoring critically ill patients. Cardiac output (CO) is a key parameter reflecting a patient's hemodynamic status, helping clinicians quickly and accurately assess their condition and adjust treatment plans. Ultrasonic cardiac output monitors (USCOM) offer a convenient and rapid way to monitor cardiac output, characterized by safety, effectiveness, and high accuracy, making them invaluable for guiding accurate clinical treatment.

[0003] Currently, medical ultrasound equipment capable of continuously acquiring blood flow parameters for extended periods mainly comprises a main housing, a display mounted on the surface of the main housing, and a control circuit board located inside the main housing. The main housing has an ultrasound probe interface for connecting an ultrasound probe, which acquires ultrasound signals. The control circuit board integrates an ultrasonic continuous cardiac output (UCCO) module, which is electrically connected to the ultrasound probe interface and controls the ultrasound probe to acquire and continuously process the acquired ultrasound signals.

[0004] However, this type of medical ultrasound equipment is large in size, not flexible in use, and requires moving the entire device during transfer. Utility Model Content

[0005] Therefore, the technical problem to be solved by this application is to overcome the shortcomings of existing medical ultrasound equipment, such as large size, lack of flexibility in use, and the need to push the entire device during transfer, so as to provide an ultrasound-based cardiac output measurement module and medical monitoring equipment.

[0006] To solve the above-mentioned technical problems, the technical solution of this application is as follows:

[0007] An ultrasound-based cardiac output measurement module includes a module housing detachably connected to a host device and a circuit board assembly disposed within the module housing. The module housing is embedded with an ultrasound probe interface and a signal transmission interface that are communicatively connected to the circuit board assembly. The ultrasound probe interface is used to connect an ultrasound probe, and the signal transmission interface is used to communicate with the main processor within the host device. The circuit board assembly includes a parameter board for controlling the ultrasound probe to emit ultrasound signals and obtaining cardiac output information based on the returned ultrasound echo signals.

[0008] In some embodiments, the parameter board integrates an MCU unit, an ultrasound transmitting circuit and an ultrasound receiving circuit electrically connected to the MCU unit. The MCU unit controls the ultrasound transmitting circuit to send an ultrasound excitation signal to the ultrasound probe and receives the ultrasound echo signal returned by the ultrasound probe through the ultrasound receiving circuit. The MCU unit processes the ultrasound echo signal to obtain the cardiac output information.

[0009] In some embodiments, the parameter board integrates a data communication interface electrically connected to the MCU unit, and the circuit board assembly further includes a communication adapter board electrically connected to the data communication interface of the parameter board. The signal transmission interface is disposed on the communication adapter board, and the communication adapter board is used to transmit the cardiac output information obtained by the parameter board to the main processor through the signal transmission interface.

[0010] In some embodiments, the module housing is further provided with an ECG signal input interface, which is communicatively connected to the parameter board.

[0011] In some embodiments, the parameter board integrates a power supply circuit that is electrically connected to the MCU unit and supplies power to the parameter board. The circuit board assembly also includes an interactive control board that is electrically connected to the MCU unit on the parameter board. The interactive control board is provided with a power on / off button for controlling the power supply circuit to supply power or disconnect power.

[0012] In some embodiments, the module housing is provided with a speaker opening, and a speaker is embedded in the speaker opening. The parameter board integrates an audio signal modulation circuit and an audio playback circuit. The audio signal modulation circuit is electrically connected between the ultrasound receiving circuit and the MCU unit and is used to demodulate the ultrasound echo signal to obtain a blood flow audio signal. The audio playback circuit is controlled by the MCU unit to control the speaker to play or stop playing the blood flow audio signal.

[0013] In some embodiments, the interactive control board is provided with a power indicator light that displays the power supply status of the power supply circuit.

[0014] In some embodiments, the module housing includes a module rear housing with an internal receiving cavity and a module front housing connected to the opening of the receiving cavity in the module rear housing. The circuit board assembly is disposed within the receiving cavity of the module rear housing. The ultrasonic probe interface and the speaker opening are both disposed on the module front housing, and the sound-emitting surface of the speaker faces the speaker opening.

[0015] In some embodiments, the housing is provided with a first support plate, the first support plate is provided with a first through hole corresponding to the position of the speaker opening, the speaker passes through the first through hole, and one end of the speaker near the sound output surface is fixed on the first support plate.

[0016] In some embodiments, the first support plate is further provided with a second through hole, through which the ultrasonic probe interface embedded on the front shell of the module passes and is fixed on the first support plate; the front shell of the module is further provided with an ECG signal input interface, and the first support plate is further provided with a third through hole, through which the ECG signal input interface communicates with the parameter board.

[0017] In some embodiments, the docking direction of the front shell and the rear shell of the module is the same as the length direction of the module shell, the length direction of the parameter plate is the same as the length direction of the module shell, and the parameter plate and the first support plate are perpendicular to each other; a second support frame is provided inside the rear shell of the module, the second support frame is arranged along the length direction of the rear shell of the module, and the parameter plate is fixed on the second support frame.

[0018] A medical monitoring device, characterized in that it includes a main unit and an ultrasound-based cardiac output measurement module as described above, which is detachably fixed to the main unit; the main unit includes a main housing, a display, and a main processor, the display and the main processor being mounted on the main housing, the shape of the main housing being configured to define an external mounting space, the external mounting space being defined by at least two outer sidewalls of the main housing, and the external mounting space including one or more mounting positions;

[0019] The ultrasound-based cardiac output measurement module can be detachably fixed at a first mounting position among the one or more mounting positions and electrically connected to the main processor.

[0020] The technical solution of this application has the following advantages: the ultrasound-based cardiac output measurement module is inserted into the main device as an accessory module. The ultrasound-based cardiac output measurement module is relatively small in size compared to the entire main device, making it easy to handle and move flexibly. This solves the problem that existing medical monitoring devices that can collect cardiac output for a long time are large in size and require moving the entire device when transferring. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional structural diagram of the host device in one embodiment of this application;

[0023] Figure 2 This is a side view of the host device in one embodiment of this application;

[0024] Figure 3 This is a three-dimensional structural diagram of a host device equipped with an ultrasound-based cardiac output measurement module and a physiological parameter measurement module, according to one embodiment of this application.

[0025] Figure 4 This is a side view of a host device equipped with an ultrasound-based cardiac output measurement module and a physiological parameter measurement module, according to one embodiment of this application.

[0026] Figure 5 This is a three-dimensional structural diagram of the host device in another embodiment of this application;

[0027] Figure 6 This is a side view of the host device in another embodiment of this application.

[0028] Figure 7 This is a three-dimensional structural diagram of the ultrasound-based cardiac output measurement module in an embodiment of this application;

[0029] Figure 8 This is an exploded view of the ultrasound-based cardiac output measurement module in an embodiment of this application;

[0030] Figure 9 This is an exploded view of the module front shell, parameter board, interactive control board, first support board, and speaker in the embodiments of this application;

[0031] Figure 10This is a functional block diagram of each module on the parameter board in the embodiments of this application.

[0032] Explanation of reference numerals in the attached drawings: 100, Main unit; 110, Main unit housing; 111, Installation position; 112, Mounting slot; 120, Display; 130, Main processor; 200, Ultrasonic-based cardiac output measurement module; 210a, Module rear housing; 210b, Module front housing; 211, Speaker opening; 220, Parameter board; 221, MCU unit; 222, Ultrasonic transmitting circuit; 223, Ultrasonic receiving circuit; 224, Timing control circuit; 225, IQ demodulation circuit; 226, Signal conditioning circuit; 227, Analog-to-digital converter; 228, Audio playback circuit; 229. Data communication interface; 2210. Power supply circuit; 230. Communication adapter board; 231. Signal transmission interface; 240. Interactive control board; 250. Ultrasound probe interface; 260. Power on / off button; 270. Speaker; 280. Power indicator light; 290. Play / stop button; 2110. ECG signal input interface; 300. Physiological parameter measurement module; 400. Ultrasound probe; 510. First support plate; 511. First through hole; 512. Second through hole; 513. Third through hole; 520. Second support frame; 530. Third support plate. Detailed Implementation

[0033] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0034] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] like Figure 1 - Figure 6 A medical monitoring device is shown, including a main unit 100 and an ultrasound-based cardiac output measurement module 200. The main unit 100 includes a main housing 110, a display 120, and a main processor 130. The display 120 is mounted on the front side of the main housing 110, and the main processor 130 is mounted inside the main housing 110. The shape of the main housing 110 is configured to define an external mounting space, which is defined by at least two contiguous outer side walls of the main housing 110. The external mounting space includes one or more mounting positions 111. Figure 2 A dashed box represents an installation location 111. It should be noted that the installation space of the main unit housing 110 includes internal and external installation spaces, separated by the main unit housing 110 itself. The internal installation space is located inside the main unit housing 110, and the external installation space is located outside the main unit housing 110. The space within the main unit housing 110 where the main processor 130 is located is the internal installation space, and the installation space outside the main unit housing 110 that can be observed or used for accessory modules is the external installation space. The outer wall surface of the main unit housing 110 is the surface that can be observed from the outside of the main unit housing 110.

[0037] like Figure 1 and Figure 2As shown, in some embodiments, the external mounting space specifically comprises two mounting slots 112 formed on the main unit housing 110, located outside the main unit housing 110. The bottom and side walls of the two mounting slots 112 are defined by the outer shape of the main unit housing 110 itself, and the openings of the two mounting slots 112 are observable from the outside of the main unit housing 110. The side of the main unit 100 where the display 120 is located is defined as the front side of the main unit housing 110, and the side opposite the front side is defined as the rear side of the main unit housing 110. The other four sides of the main unit housing 110 are defined as the top, bottom, left, and right sides. The openings of the two mounting slots 112 are located on the vertically oriented left or right side of the main unit housing 110, and the openings of the two mounting slots 112 are arranged vertically on the left or right side of the main unit housing 110. The openings of the two mounting slots 112 form insertion slots on the left or right side of the main unit housing 110. In some alternative embodiments, the external mounting space may also be a housing recess formed on the outside of the main unit housing 110. The housing recess differs from the mounting groove in that the mounting groove usually has an opening on only one side of the main unit housing 110, while the housing recess refers to a recess with openings on two or three sides of the main unit housing 110.

[0038] like Figure 1 and Figure 2 As shown, in some embodiments, the mounting slot 112 may have one mounting position 111, or two or more mounting positions 111. When a mounting slot 112 has multiple mounting positions 111, the sizes of the multiple mounting positions 111 may be the same or different. It should be noted that the mounting position 111 refers to the mounting area within the mounting slot 112 where accessory modules can be plugged in and installed, and each mounting position 111 has at least one set of slots, holes, or pins for plugging and connecting with accessory modules.

[0039] like Figure 2 and Figure 3 As shown, the ultrasound-based cardiac output measurement module 200 can be detachably fixed in a first mounting position within one of the mounting slots 112. When the ultrasound-based cardiac output measurement module 200 is fixed in the first mounting position within the mounting slot 112, the internal circuitry of the ultrasound-based cardiac output measurement module 200 is connected to the circuitry on the main processor 130 within the host device 100. The ultrasound-based cardiac output measurement module 200 is used for wired or wireless connection with the ultrasound probe 400, and is used to process the ultrasound echo signals acquired by the ultrasound probe 400 to obtain ultrasound parameter information. The main processor 130 receives the ultrasound parameter information and processes it to generate ultrasound image information that can be displayed on the display 120.

[0040] like Figure 3 and Figure 4 As shown, in some embodiments, the medical monitoring device further includes a physiological parameter measurement module 300, which can be detachably fixed in a second mounting position within another mounting slot 112. When the physiological parameter measurement module 300 is fixed in the second mounting position within one of the mounting slots 112, the internal circuitry of the physiological parameter measurement module 300 is connected to the circuitry of the main processor 130 within the host device 100. The physiological parameter measurement module 300 is used to connect to the physiological parameter acquisition probe via wired or wireless connection and processes the physiological parameter signals acquired by the probe to output physiological parameter information. The main processor 130 receives the physiological parameter information and processes it to generate physiological parameter image information that can be displayed on the display 120. The physiological parameter signals are one or more of the following: body temperature signal, blood pressure signal, blood oxygen signal, electrocardiogram signal, pulse signal, and respiration signal. It should be noted that the physiological parameter measurement module 300 and the ultrasound-based cardiac output measurement module 200 can be simultaneously fixed in two different mounting positions 111, allowing the monitoring device to simultaneously measure multiple physiological parameters.

[0041] like Figure 5 and Figure 6 As shown, in some embodiments, the external mounting space is specifically a mounting groove 112 formed on the main housing 110, located outside the main housing 110. The bottom wall and side wall of the mounting groove 112 are both defined by the main housing 110 itself, and the opening of the mounting groove 112 is located on a vertically arranged side of the main housing 110. The opening of the mounting groove 112 forms an insertion port on the side of the main housing 110. The mounting groove 112 has two mounting positions 111, namely a first mounting position and a second mounting position, which are arranged side by side in the same mounting groove 112. The ultrasound-based cardiac output measurement module 200 can be detachably fixed in the first mounting position in the mounting groove 112, and the physiological parameter measurement module 300 can be detachably fixed in the second mounting position in the mounting groove 112. When the host device 100 is in operation, the ultrasound-based cardiac output measurement module 200 and the physiological parameter measurement module 300 can be simultaneously fixed in two different mounting positions 111 of the mounting slot 112, or only one of them can be fixed in the corresponding mounting position 111 of the mounting slot 112. It can be understood here that the same mounting slot 112 may include more than two mounting positions 111.

[0042] In some embodiments, the external mounting space is specifically a mounting slot 112 formed on the main unit housing 110. The mounting slot 112 is located outside the main unit housing 110, and the opening of the mounting slot 112 forms an insertion port on the side of the main unit housing 110. Only one mounting position (not shown) is provided within the mounting slot 112, and both the physiological parameter measurement module 300 and the ultrasound-based cardiac output measurement module 200 can be detachably fixed to the same mounting position in the mounting slot 112. When the main unit device 100 is in operation, the physiological parameter measurement module 300 or the ultrasound-based cardiac output measurement module 200 is selectively installed in the mounting slot 112. In this case, the monitoring device can only measure physiological parameters or ultrasound parameters independently.

[0043] In some embodiments, the ultrasound probe 400 is a continuous-wave Doppler probe capable of continuously acquiring ultrasound echo signals. The ultrasound echo signals acquired by the ultrasound probe 400 include at least the ultrasound echo signals of blood flow.

[0044] In some implementations, the ultrasound-based cardiac output measurement module 200 is an ultrasound cardiac output measurement module that can process the ultrasound echo signal acquired by the ultrasound probe 400 and obtain cardiac output information.

[0045] In some implementations, ultrasound parameters include fetal heart rate information; physiological parameters include maternal physiological parameters.

[0046] like Figure 3 and Figure 7 As shown, the ultrasound-based cardiac output measurement module 200 includes a module housing and a circuit board assembly. The module housing is detachably fixed in one of the mounting positions 111 of the mounting slot 112, and the circuit board assembly is disposed inside the module housing.

[0047] like Figure 7 and Figure 8 As shown, the module housing includes a rear module housing 210a and a front module housing 210b connected to each other. The rear module housing 210a is a cylindrical structure with an internal cavity and an opening at one end. The front module housing 210b is connected to the opening of the internal cavity of the rear module housing 210a. The circuit board assembly is disposed within the cavity of the rear module housing 210a, and the module housing is provided with an internal fixing bracket to provide mounting support for the circuit board assembly.

[0048] like Figure 7As shown, the front housing 210b of the module is provided with a pair of ultrasonic probe interfaces 250 for communication with the circuit board assembly. The pair of ultrasonic probe interfaces 250 are used to connect the ultrasonic probe 400. The front housing 210b of the module is also provided with a speaker opening 211 and an ECG signal input interface 2110, which is located between the pair of ultrasonic probe interfaces 250.

[0049] like Figure 8 and Figure 9 As shown, the circuit board assembly includes a parameter board 220 and a communication adapter board 230. A pair of ultrasound probe interfaces 250 are electrically connected to the parameter board 220. The parameter board 220 is used to control the ultrasound probe 400 to emit ultrasound signals and process the returned ultrasound echo signals to obtain ultrasound parameter information. The communication adapter board 230 is provided with a signal transmission interface 231 embedded in the module's rear shell 210a. The signal transmission interface 231 is used to communicate with the main processor 130 inside the main housing 110. The communication adapter board 230 is used to transmit the output stream information obtained from the parameter board 220 to the main processor 130 inside the main housing through the signal transmission interface 231.

[0050] like Figure 10 As shown, the parameter board 220 integrates an MCU unit 221, an ultrasonic transmitting circuit 222, and an ultrasonic receiving circuit 223 electrically connected to the MCU unit 221. The MCU unit 221 controls the ultrasonic transmitting circuit 222 to send an ultrasonic excitation signal to the ultrasonic probe 400 and receives the ultrasonic echo signal returned by the ultrasonic probe 400 through the ultrasonic receiving circuit 223. The MCU unit 221 obtains cardiac output information based on the ultrasonic echo signal. Specifically, a timing control circuit 224 is also coupled between the MCU unit 221 and the ultrasonic transmitting circuit 222. The timing control circuit 224 is controlled by the MCU unit 221 to send a periodic pulse drive signal to the ultrasonic transmitting circuit 222, and the ultrasonic transmitting circuit 222 responds to the periodic pulse drive signal by sending an ultrasonic excitation signal to the ultrasonic probe 400. The ultrasonic receiving circuit 223 is mainly used to amplify the ultrasonic echo signal returned by the ultrasonic probe 400.

[0051] like Figure 10 As shown, the parameter board 220 integrates a data communication interface 229 electrically connected to the MCU unit 221, and the communication adapter board 230 is electrically connected to the data communication interface 229 of the parameter board 220. The communication adapter board 230 is used to transmit the core output stream information obtained from the parameter board 220 to the main processor 130 through the signal transmission interface 231.

[0052] like Figure 8 and Figure 9As shown, the parameter board 220 is also electrically connected to a speaker 270, the sound-emitting surface of the speaker 270 facing the speaker opening 211, and the sound-emitting surface of the speaker 270 is embedded in the speaker opening 211. Figure 10 As shown, the parameter board 220 integrates an audio signal modulation circuit and an audio playback circuit 228. The audio signal modulation circuit is electrically connected between the ultrasound receiving circuit 223 and the MCU unit 221. The audio signal modulation circuit is used to demodulate the ultrasound echo signal to obtain the blood flow audio signal. The audio playback circuit 228 is controlled by the MCU unit 221 to control the speaker 270 to play or stop playing the blood flow audio signal. Specifically, the audio signal modulation circuit includes an IQ demodulation circuit 225, a signal modulation circuit 226, and an analog-to-digital converter 227. The IQ demodulation circuit 225 is coupled between the ultrasound receiving circuit 223 and the signal modulation circuit 226. The signal modulation circuit 226 is coupled between the IQ demodulation circuit 225 and the analog-to-digital converter 227. The analog-to-digital converter 227 is coupled between the signal modulation circuit 226 and the MCU unit 221. The ultrasound-based cardiac output measurement module 200 has a built-in speaker 270, which can independently play blood flow audio signals, expanding the functionality of the ultrasound-based cardiac output measurement module 200 and making it easier for users to judge the acquisition quality of blood flow signals based on the played blood flow audio signals.

[0053] The IQ demodulation circuit 225 demodulates the Doppler frequency shift signal of the ultrasound echo signal, using IQ demodulation to distinguish the direction of blood flow. The signal conditioning circuit 226 filters the demodulated Doppler frequency shift signal. The analog-to-digital converter 227 converts the filtered Doppler frequency shift signal into a digital signal and transmits it to the MCU unit 221. This digital signal is the blood flow audio signal. The MCU unit 221 processes the digital signal to calculate blood flow parameters and generate blood flow image data. The main processor 130 receives the blood flow parameters calculated by the MCU unit 221 for display on the display 120. The main processor 130 also processes the blood flow image data obtained by the MCU unit 221 to generate ultrasound image information that can be displayed on the display 120.

[0054] like Figure 8 , Figure 9 and Figure 10As shown, the parameter board 220 integrates a power supply circuit 2210 that is electrically connected to the MCU unit 221 and supplies power to the parameter board 220. The circuit board assembly also includes an interactive control board 240 that is electrically connected to the MCU unit 221 on the parameter board 220. The interactive control board 240 has a power indicator light 280 that displays the power supply status of the power supply circuit 2210, and the power indicator light 280 is exposed on the front cover 210b of the module. The interactive control board 240 also has a power on / off button 260, which is exposed on the front cover 210b of the module. The power on / off button 260 inputs power on / off commands to the MCU unit 221 through the interactive control board 240, and the MCU unit 221 controls the power supply circuit 2210 to power on or off according to the power on / off commands.

[0055] like Figure 7 , Figure 9 and Figure 10 As shown, the interactive control board 240 is also equipped with a sound play / stop button 290, which is exposed on the front shell 210b of the module. The sound play / stop button 290 inputs sound play / stop commands to the MCU unit 221 through the interactive control board 240. The MCU unit 221 controls the audio playback circuit 228 to play or stop playing the blood flow audio signal according to the sound play / stop commands.

[0056] like Figure 7 , Figure 8 and Figure 9As shown, the internal fixing bracket includes a first support plate 510, a second support frame 520, and a third support plate 530. The first support plate 510 and the front shell 210b of the module are positioned opposite each other. The first support plate 510 has a first through hole 511, which corresponds to the position of the speaker opening 211. The speaker 270 passes through the first through hole 511. One end of the speaker 270 near the sound-emitting surface is fixed to the first support plate 510, which provides mounting support for the speaker 270. The first support plate 510 has two second through holes 512, which correspond to the positions of two ultrasonic probe interfaces 250. The ultrasonic probe interfaces 250 pass through the second through holes 512 and are connected to the front shell 210b of the module. The ultrasonic probe interfaces 250 are fixed to the first support plate 510, which provides mounting support for the two ultrasonic probe interfaces 250. The first support plate 510 also has a third through hole 513 located between the two second through holes 512. The third through hole 513 is positioned corresponding to the ECG signal input interface 2110. The third through hole 513 allows the ECG signal input interface 2110 to pass through. One end of the ECG signal input interface 2110 is connected to the parameter plate 220, and the other end is embedded in the front shell 210b of the module. The ECG signal input interface 2110 is fixed on the first support plate 510, which provides mounting support for the two ECG signal input interfaces 2110.

[0057] like Figure 7 , Figure 8 and Figure 9 As shown, the internal fixing bracket also includes a second support frame 520. The parameter plate 220 is mounted on the second support frame 520, and the parameter plate 220 and the first support plate 510 are perpendicular to each other. The parameter plate 220 can be a single circuit board or multiple circuit boards arranged at intervals from top to bottom. When the parameter plate 220 includes only one circuit board, the parameter plate 220 is suspended inside the module housing by the second support frame 520 so that functional modules can be set on the two surfaces of the parameter plate 220 respectively, thereby improving the integration of the parameter plate 220. The second support frame 520 extends from the end of the module rear shell 210a with an opening to the end of the module rear shell 210a opposite to the opening. The second support frame 520 includes three metal support plates respectively arranged corresponding to the three inner side walls of the module rear shell 210a. The three support plates are connected in sequence, and one end of the communication adapter plate 230 is fixed on one of the support plates. The communication adapter plate 230 and the parameter plate 220 are arranged perpendicular to each other. The three support plates are placed on the three sides of the parameter board 220, which can provide installation support for the parameter board 220 and the communication adapter board 230, and also achieve a certain electromagnetic shielding effect on the outer periphery of the parameter board 220, reducing the influence of external signals on the signals inside the parameter board 220.

[0058] like Figure 7 , Figure 8 and Figure 9 As shown, the internal fixed bracket also includes a third support plate 530, which is parallel to and perpendicular to the first support plate 510. The third support plate 530 is located on the side of the second support frame 520 without a support plate. The third support plate 530 is fixedly connected to both the first support plate 510 and the second support frame 520, and is spaced apart between the interactive control board 240 and the parameter board 220. The third support plate 530 can separate the internal space of the module housing, providing installation support for various components within the module housing, thereby making full use of the internal space of the module housing, realizing the miniaturization and lightweight design of the module housing, and facilitating the insertion, removal, and transfer of the module housing.

[0059] In summary, the ultrasound-based cardiac output measurement module and medical monitoring device provided in this application have the following advantages:

[0060] 1. The ultrasound-based cardiac output measurement module can be inserted into the external installation space of the main unit housing as an accessory module, which can be used for long-term continuous measurement of blood flow parameters. Moreover, the ultrasound-based cardiac output measurement module is relatively small in size compared to the whole device, making it easy to handle and move flexibly. This solves the problem that existing medical monitoring devices that can collect blood flow parameters for a long time are large in size and require moving the entire device when transferring.

[0061] 2. The main unit housing can also be fitted with a physiological parameter measurement module for measuring other physiological parameters. The physiological parameter measurement module and the ultrasound-based cardiac output measurement module can measure multiple physiological parameters simultaneously or separately, which can expand the functions of the monitoring equipment.

[0062] 3. The ultrasound-based cardiac output measurement module has the function of playing blood flow sounds, which makes it easy for users to judge the acquisition quality of blood flow signals based on the played blood flow audio signals.

[0063] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this application.

Claims

1. A cardiac output measurement module based on ultrasound, characterized in that, The device includes a module housing detachably connected to a host device (100) and a circuit board assembly disposed within the module housing. The module housing is embedded with an ultrasound probe interface (250) and a signal transmission interface (231) that are communicatively connected to the circuit board assembly. The ultrasound probe interface (250) is used to connect an ultrasound probe, and the signal transmission interface (231) is used to communicate with the main processor (120) within the host device (100). The circuit board assembly includes a parameter board (220) for controlling the ultrasound probe to emit ultrasound signals and obtaining cardiac output information based on the returned ultrasound echo signals.

2. The ultrasound-based cardiac output measurement module according to claim 1, characterized in that, The parameter board (220) integrates an MCU unit (221), an ultrasound transmitting circuit (222) and an ultrasound receiving circuit (223) electrically connected to the MCU unit (221). The MCU unit (221) controls the ultrasound transmitting circuit (222) to send an ultrasound excitation signal to the ultrasound probe and receives the ultrasound echo signal returned by the ultrasound probe through the ultrasound receiving circuit (223). The MCU unit (221) processes the ultrasound echo signal to obtain the cardiac output information.

3. The ultrasound-based cardiac output measurement module according to claim 2, characterized in that, The parameter board (220) integrates a data communication interface (229) electrically connected to the MCU unit (221). The circuit board assembly also includes a communication adapter board (230) electrically connected to the data communication interface of the parameter board (220). The signal transmission interface (231) is disposed on the communication adapter board (230). The communication adapter board (230) is used to transmit the cardiac output information obtained by the parameter board (220) to the main processor (120) through the signal transmission interface (231).

4. The ultrasound-based cardiac output measurement module according to claim 3, characterized in that, The module housing is provided with a speaker opening (211), and a speaker (270) is embedded in the speaker opening (211). The parameter board (220) integrates an audio signal modulation circuit and an audio playback circuit (228). The audio signal modulation circuit is electrically connected between the ultrasound receiving circuit (223) and the MCU unit (221) and is used to demodulate the ultrasound echo signal to obtain a blood flow audio signal. The audio playback circuit (228) is controlled by the MCU unit (221) to control the speaker (270) to play or stop playing the blood flow audio signal.

5. The ultrasound-based cardiac output measurement module according to claim 4, characterized in that, The circuit board assembly also includes an interactive control board (240) electrically connected to the MCU unit (221) on the parameter board (220); the interactive control board (240) is also provided with a sound play / stop button (290), the sound play / stop button (290) inputs a sound play / stop command to the MCU unit (221) through the interactive control board (240), and the MCU unit (221) controls the audio playback circuit (228) to play or stop playing the blood flow audio signal according to the sound play / stop command.

6. The ultrasound-based cardiac output measurement module according to claim 5, characterized in that, The module housing is also embedded with an ECG signal input interface (2110), which is communicatively connected to the parameter board (220). The parameter board (220) integrates a power supply circuit (2210) that is electrically connected to the MCU unit (221) and supplies power to the parameter board (220). The interactive control board (240) is provided with a power on / off button (260) for controlling the power supply circuit (2210) to power on or off. The interactive control board (240) is provided with a power indicator light (280) that displays the power supply status of the power supply circuit (2210).

7. The ultrasound-based cardiac output measurement module according to claim 4, characterized in that, The module housing includes a module rear shell (210a) with an internal receiving cavity and a module front shell (210b) connected to the opening of the receiving cavity of the module rear shell (210a). The circuit board assembly is disposed in the receiving cavity of the module rear shell (210a). The ultrasonic probe interface (250) and the speaker opening (211) are both disposed on the module front shell (210b). The sound-emitting surface of the speaker (270) faces the speaker opening (211).

8. The ultrasound-based cardiac output measurement module according to claim 7, characterized in that, The module housing is provided with a first support plate (510), and the first support plate (510) is provided with a first through hole (511) corresponding to the position of the speaker opening (211). The speaker (270) passes through the first through hole (511), and the end of the speaker (270) near the sound output surface is fixed on the first support plate (510). The first support plate (510) is also provided with a second through hole (512). The ultrasonic probe interface (250) embedded in the front shell (210b) of the module passes through the second through hole (512), and the ultrasonic probe interface (250) is fixed on the first support plate (510). The front shell (210b) of the module is also provided with an ECG signal input interface (2110). The first support plate (510) is also provided with a third through hole (513). The ECG signal input interface (2110) passes through the third through hole (513) and communicates with the parameter board (220).

9. The ultrasound-based cardiac output measurement module according to claim 8, characterized in that, The docking direction of the front shell (210b) and the rear shell (210a) of the module is the same as the length direction of the module shell. The length direction of the parameter plate (220) is the same as the length direction of the module shell. The parameter plate (220) and the first support plate (510) are perpendicular to each other. A second support frame (520) is provided inside the rear shell (210a). The second support frame (520) is arranged along the length direction of the rear shell (210a). The parameter plate (220) is fixed on the second support frame (520).

10. A medical monitoring device, characterized in that, The device includes a host device (100) and an ultrasound-based cardiac output measurement module as described in any one of claims 1-9, which is detachably fixed to the host device (100); the host device (100) includes a host housing (110), a display (120), and a main processor (130), both of which are mounted on the host housing (110), the host housing (110) being configured to define an external mounting space defined by at least two outer sidewalls of the host housing (110), the external mounting space including one or more mounting positions (111); The ultrasound-based cardiac output measurement module (200) can be detachably fixed in a first mounting position among the one or more mounting positions (111) so that the signal transmission interface (231) can communicate with the main processor (130).

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