Miniaturized interventional ultrasonic diagnosis system

Abstract

The invention relates to the technical field of medical instruments, and discloses a miniaturized interventional ultrasonic diagnosis system which comprises a catheter control unit and a diagnosis catheter. The motor is controlled to rotate through the motor control circuit, power of the motor is transmitted to the movement assembly through the rotation transmission assembly, and the movement assembly transmits rotation power to the diagnosis catheter so as to drive an imaging probe of the diagnosis catheter to rotate; the power of the motor is further transmitted to the movement assembly through the withdrawing transmission assembly, the movement assembly drives the control unit clamping base to move forwards, then a catheter withdrawing clamping groove formed in the control unit clamping base is driven to move forwards, and the catheter withdrawing clamping groove moves forwards to drive an imaging probe of the diagnosis catheter to withdraw. The retraction movement assembly is innovatively converted into the control unit clamping base from a traditional catheter control unit, it is guaranteed that the gravity center is stable in the retraction process, risks caused by gravity center change are reduced, and the safety of the operation process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and particularly to a miniaturized interventional ultrasound diagnostic system. Background Art

[0002] At present, Intravascular Ultrasound (IVUS) has been widely used in the clinical diagnosis of cardiovascular diseases, especially playing an important role in the imaging of atherosclerosis and coronary stents. The IVUS technology combines non-invasive ultrasound imaging with invasive catheter technology, and can provide a high-resolution intravascular view, thereby effectively evaluating the vascular wall structure, lesion degree and blood flow condition, and providing accurate diagnostic information for clinical practice. This enables doctors to observe the dynamic changes of vascular lesions in real time, evaluate the effect after stent implantation, and provide precise guidance for vascular treatment.

[0003] Traditional intravascular diagnostic systems usually consist of two main parts: an imaging device and a diagnostic catheter. Among them, the imaging device usually includes an imaging host and a catheter control unit. The core function of the imaging host is to process and display the ultrasound images obtained by the catheter. It is responsible for receiving the signals transmitted back by the ultrasound sensor and converting them into clear and operable vascular images.

[0004] The catheter control unit is mainly used to control the movement of the diagnostic catheter. It enables the ultrasound probe to perform a 360-degree comprehensive scan of different regions of the blood vessel by precisely controlling the rotation and retraction movements of the catheter, so as to obtain a complete vascular tomographic image. During the scanning process, the control unit can adjust the position of the catheter to ensure that the probe can accurately cover the lesion area and make fine adjustments as needed, thereby maximizing the imaging quality.

[0005] Currently, all commercially available intravascular ultrasound devices on the market are relatively large in size, occupy a large amount of space in the interventional catheter room and are not easy to move, and cannot meet the requirements for rapid and flexible deployment of equipment in the emergency treatment room for cardiovascular diseases. In addition, during the rotation and retraction scanning imaging process of the existing commercial catheter control units, they usually need to be driven by two independent motors respectively. This design results in a certain degree of non-synchronization between the two movements, which may cause clinical measurement errors and affect the diagnostic accuracy.

[0006] In addition, during the retraction process of the existing intravascular ultrasound diagnostic catheter, the center of gravity of the control unit continuously adjusts with the movement. This unstable state of the center of gravity may cause the control unit to tilt or even fall, which may in turn lead to equipment out of control. This situation may cause excessive tension on the interventional catheter during clinical surgery, increasing the risk of bleeding at the patient's puncture site or other tissue damage, and affecting the surgical safety. Summary of the Invention

[0007] Based on this, in view of the technical problem that during the retraction process of the prior art intravascular ultrasound diagnostic catheter, the center of gravity of the control unit continuously adjusts with the change of movement, and this unstable state of the center of gravity may cause the control unit to tilt or even fall, thus leading to equipment out of control, a miniaturized interventional ultrasound diagnostic system is proposed. The system includes: a catheter control unit and a diagnostic catheter. Among them, the catheter control unit includes a motor, a motor control circuit, a rotary transmission component, a retraction transmission component, a motion component, and a control unit card seat. A catheter retraction card slot for the diagnostic catheter is installed on the control unit card seat;

[0008] In response to a user's diagnostic instruction, the miniaturized interventional ultrasound diagnostic system controls the motor to rotate through the motor control circuit. Among them, the power of the motor is transmitted to the motion component through the rotary transmission component, and the motion component transmits the rotational power to the diagnostic catheter to drive the imaging probe of the diagnostic catheter to rotate;

[0009] The power of the motor is also transmitted to the motion component through the retraction transmission component, and the motion component drives the control unit card seat to move forward, thereby driving the catheter retraction card slot installed on the control unit card seat to move forward. The forward movement of the catheter retraction card slot drives the imaging probe of the diagnostic catheter to retract.

[0010] In one embodiment, the miniaturized interventional ultrasound diagnostic system further includes a signal transmitting and receiving processing module, a motion coupling module, a power supply module, and a signal wireless transmission module. Each module in the miniaturized interventional ultrasound diagnostic system is integrated into a compact structure.

[0011] In one embodiment, the motor control circuit is connected to the motor, the motor is connected to the motion coupling module, the motion coupling module is connected to the motion component, the motion component is connected to the diagnostic catheter, the signal transmitting and receiving processing module is connected to the motion coupling module, the signal wireless transmission module is connected to the signal transmitting and receiving processing module, and the power supply module is used to supply power to each module.

[0012] The miniaturized interventional ultrasound diagnostic system proposed by the present invention, the miniaturized interventional ultrasound diagnostic system includes: a catheter control unit and a diagnostic catheter. Among them, the catheter control unit includes a motor, a motor control circuit, a rotary transmission assembly, a retraction transmission assembly, a motion assembly, and a control unit card seat. A catheter retraction card slot for the diagnostic catheter is installed on the control unit card seat; the miniaturized interventional ultrasound diagnostic system responds to the user's diagnostic instruction, and controls the motor to rotate through the motor control circuit. Among them, the power of the motor is transmitted to the motion assembly through the rotary transmission assembly, and the motion assembly transmits the rotational power to the diagnostic catheter to drive the imaging probe of the diagnostic catheter to rotate; the power of the motor is also transmitted to the motion assembly through the retraction transmission assembly, and the motion assembly drives the control unit card seat to move forward, and then drives the catheter retraction card slot installed on the control unit card seat to move forward. The forward movement of the catheter retraction card slot drives the imaging probe of the diagnostic catheter to retract. The present invention uses a single motor to drive two different directions of movement, so as to achieve precise position matching between the rotational image and the retracted image, significantly improve the measurement accuracy, ensure the accurate diagnosis of intravascular lesions. In addition, the present invention innovatively converts the retraction motion assembly from the traditional catheter control unit to the control unit card seat, ensuring the center of gravity stability during the retraction process, reducing the risk caused by the change of the center of gravity, improving the safety of the surgical process. Moreover, through the integrated design, the present invention miniaturizes and wirelessizes the intravascular ultrasound diagnostic device, significantly reducing the space occupied by the device in the operating room and eliminating the restriction of the cable on the surgical operation, improving the flexibility and efficiency of the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0014] Among them:

[0015] Figure 1 is a schematic structural diagram of a miniaturized interventional ultrasound diagnostic system in an embodiment;

[0016] Figure 2 is a schematic structural diagram of an intravascular ultrasound catheter of a miniaturized interventional ultrasound diagnostic system in an embodiment;

[0017] Figure 3 is a schematic diagram of intravascular ultrasound retraction scanning of a miniaturized interventional ultrasound diagnostic system in an embodiment;

[0018] Figure 4 is a schematic diagram of traditional intravascular ultrasound retraction scanning in an embodiment. Detailed implementation manners

[0019] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0020] Reference to "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase does not necessarily refer to the same embodiment when it appears in various places in the specification, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the protection scope of the present invention.

[0022] Please refer to Figure 1 as shown Figure 1 which is a schematic structural diagram of a miniaturized interventional ultrasound diagnostic system provided by an embodiment of the present invention. The miniaturized interventional ultrasound diagnostic system includes: a catheter control unit and a diagnostic catheter. The catheter control unit includes a motor, a motor control circuit, a rotary transmission assembly, a retraction transmission assembly, a motion assembly, and a control unit card seat. A catheter retraction card slot for the diagnostic catheter is installed on the control unit card seat. The miniaturized interventional ultrasound diagnostic system responds to a user's diagnostic instruction and controls the motor to rotate through the motor control circuit. The power of the motor is transmitted to the motion assembly through the rotary transmission assembly, and the motion assembly transmits the rotary power to the diagnostic catheter to drive the imaging probe of the diagnostic catheter to rotate. The power of the motor is also transmitted to the motion assembly through the retraction transmission assembly, and the motion assembly drives the control unit card seat to move forward, and further drives the catheter retraction card slot installed on the control unit card seat to move forward. The forward movement of the catheter retraction card slot drives the imaging probe of the diagnostic catheter to retract.

[0023] Refer to Figure 2 , Figure 2Schematic diagram of the intravascular ultrasound catheter structure, that is, the schematic diagram of the diagnostic catheter, mainly consists of a signal mandrel 1, an intervention sheath 2, a catheter retraction card slot 3, and a catheter retraction extension section 4. It should be noted that moving the catheter retraction card slot forward can drive the imaging probe in the intervention sheath to retract.

[0024] In this embodiment, referring to Figure 3 , during the retraction movement, the catheter control unit closely cooperates with the control unit card seat on the diagnostic catheter, and the mandrel of the catheter is driven by a motor to achieve the retraction movement. The main function of the catheter control unit is to provide the required power, and at the same time, a fixed seat matching the catheter card slot unit is designed to ensure that the outer sheath of the catheter remains stably fixed in the body during the retraction process, so as to ensure that the catheter mandrel can retract smoothly and accurately along the blood vessel path.

[0025] In this project, the intravascular ultrasound diagnostic catheter can be divided into four main parts according to the motion state: the first part is the mandrel inside the diagnostic catheter, the second part is the sheath fixed in the body, the third part is the external sheath of the catheter (mainly referring to the area from the hemostatic valve to the catheter card slot unit), and the fourth part is the extended part of the sheath for the retraction movement at the rear end of the catheter. The traditional retraction movement method realizes the relative movement between the catheter mandrel and the sheath by fixing the second part and the third part, while the first part and the fourth part move freely.

[0026] Different from the traditional design, in this project, the fixed seat on the retraction drive unit is designed as a moving part, which changes the movement mode of the retraction drive unit. Referring to Figure 4 , Figure 4 is the schematic diagram of the traditional intravascular ultrasound retraction scan. The control unit card seat is fixed, and the overall retraction movement of the entire catheter control unit is required to drive the imaging probe of the diagnostic catheter to retract. Specifically, the control unit card seat of the fixed diagnostic catheter realizes the relative retraction movement of the catheter mandrel through the forward extension method, so that the second part and the fourth part remain fixed, while the first part and the third part perform relative movement. This design ensures that during the retraction process, only the position of the control unit card seat for fixing the catheter changes, and the impact of this component on the change of the center of gravity of the entire system is very small and can almost be ignored. Therefore, this design can effectively ensure the stability of the catheter control unit during the movement process, reduce the potential risks caused by the change of the center of gravity, and further improve the safety and reliability during the retraction process.

[0027] In addition, the miniaturized interventional ultrasound diagnostic system further includes a signal transmitting and receiving processing module, a motion coupling module, a power supply module, and a signal wireless transmission module. Each module in the miniaturized interventional ultrasound diagnostic system is integrated into a compact structure. Through a highly integrated structural design, key components such as motion components, drive modules, signal transmitting and receiving processing modules, signal motion coupling and transmission modules, power supply modules, and signal wireless transmission modules are integrated, thus realizing the miniaturized design of the intravascular ultrasound diagnostic device. This design effectively reduces the occupation of the operating room space by the device and improves the sharing efficiency of the device among multiple operating rooms.

[0028] In one embodiment, referring to Figure 1 , the motor control circuit is connected to the motor, the motor is connected to the motion coupling module, the motion coupling module is connected to the motion component, the motion component is connected to the diagnostic catheter, the signal transmitting and receiving processing module is connected to the motion coupling module, the signal wireless transmission module is connected to the signal transmitting and receiving processing module, and the power supply module is used to supply power to each module.

[0029] Specifically, the drive module includes a motor and a motor control circuit. This module is used to drive the motion component to move. The motion component includes a signal connector, a structural fitting, etc. This component is integrated with the signal motion coupling and transmission module to form a whole, so as to realize the stable transmission of the signal to the signal transmitting and receiving processing module under rotational motion. Finally, the power supply module is used to supply power to the whole system, and the wireless transmission module is used to send the received signal to the host.

[0030] In this system, the motion scanning requirements include two modes: rotational scanning and retraction scanning. Rotational scanning can be executed alone or simultaneously with retraction scanning, while retraction scanning in the system only occurs in combination with rotational scanning and cannot be executed alone. To achieve these two scanning modes, the same drive module is adopted in this system to drive the rotational motion and the retraction motion. This drive module consists of a motor, transmission components in two directions, and a circuit related to motor control.

[0031] In the rotational scanning mode, the rotation of the motor is achieved through different driving methods. If the coaxial driving method is adopted, the rotation center axis of the motor is coaxially docked with the moving parts (such as bearings, signal coupling devices, etc.) in the rotational motion component, thus realizing precise rotational control; in the non - coaxial driving method, the rotational motion of the motor changes the force transmission direction through transmission devices such as gears and belts, and then drives the rotational motion component to perform rotational scanning. The realization of retraction scanning refers to the design scheme of rotational motion. By applying the design concept of the rotational motion scheme to the retraction motion, the drive module can achieve the coordinated control of rotational and retraction actions. Specifically, the retraction motion depends on the transmission system of the rotational motion scheme to ensure the smooth movement and precise positioning of the catheter during retraction.

[0032] By means of a method of driving two motions with one motor, precise matching between the two motion information is achieved, that is, each frame of the rotated image and the retracted physical distance are absolutely registered. Specifically, since this system includes two motions during the scanning examination, one is rotation (360° scanning on one section), and the other is retraction (translation motion). These two motions are carried out simultaneously. Currently, in many solutions, one motor is used for rotation and one motor is used for retraction, and the two motors are independent of each other. Then there is no correlation between the rotation speed and the retraction speed, and there will be problems: the rotation speed corresponds to the frame rate (assuming 30 rotations per second, 30 frames of images will be obtained), but the rotation speed will jitter due to the influence of factors such as heart pulsation and blood vessel compression during this rotation process. Maybe it will fluctuate between 28 and 32 rotations per second. At the same time, the retraction speed fluctuates due to the influence of external motion resistance, resulting in a variable motion distance corresponding to each frame of the image. This solution uses one motor to complete these two motions, so that the two speeds are always correlated, and the retraction distance corresponding to each frame of the image is also fixed. The two can be considered to achieve absolute registration. This is of great significance for the precise measurement of clinical lesion areas, stents, and blood vessel lengths, etc.

[0033] It should be noted that through the integrated design, the intravascular ultrasound diagnostic device of the present invention is miniaturized and wirelessized, significantly reducing the space occupied by the device in the operating room and eliminating the limitation of cables on surgical operations, thereby improving the flexibility and efficiency of operations; the present invention uses a single motor to drive two motions in different directions, thereby achieving precise position matching between the rotated image and the retracted image, significantly improving the measurement accuracy and ensuring the accurate diagnosis of intravascular lesions; the present invention innovatively converts the retraction motion component from the traditional catheter control unit to the control unit card seat, ensuring the center of gravity stability during the retraction process, reducing the risks caused by the change of the center of gravity, and improving the safety of the surgical process.

[0034] The present invention has the following three advantages:

[0035] First, the integrated design of the catheter control unit: This project adopts the integrated design of the catheter control unit, compactly integrating multiple functional modules, significantly reducing the space occupied by the device. This design not only improves the utilization rate of the space in the catheter room, but also makes the device more convenient for storage and management, thereby improving the sharing efficiency of the catheter room equipment and optimizing the resource allocation.

[0036] Second, a single motor drives two motion modes: This project realizes the complete synchronous control of two motion modes (rotation scanning and retraction scanning) by using a single motor to drive them simultaneously. This design optimizes the information matching accuracy between the rotated image and the retracted image, ensures the consistency of the scanned data, thereby significantly improving the accuracy of clinical disease diagnosis and reducing the errors caused by asynchronous motion.

[0037] III. Design of the novel retraction motion structure: In this project, the driving part of the catheter retraction motion is innovatively designed at the front socket position, and the overall movement of the control unit is avoided. This structural design effectively guarantees the stability of the catheter during the retraction process, avoids the risks brought by the movement of the control unit, thus significantly improving the safety of the intravascular ultrasound system examination process and reducing the potential risks to patients.

[0038] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above.

[0039] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still 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 cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A miniaturized interventional ultrasound diagnostic system, characterized in that, The miniaturized interventional ultrasound diagnostic system includes: a catheter control unit and a diagnostic catheter. Among them, the catheter control unit includes a motor, a motor control circuit, a rotational transmission assembly, a retraction transmission assembly, a motion assembly, and a control unit card holder. A catheter retraction card slot for the diagnostic catheter is installed on the control unit card holder; In response to a user's diagnostic instruction, the miniaturized interventional ultrasound diagnostic system controls the motor to rotate through the motor control circuit. Among them, the power of the motor is transmitted to the motion assembly through the rotational transmission assembly, and the motion assembly transmits the rotational power to the diagnostic catheter to drive the imaging probe of the diagnostic catheter to rotate; The power of the motor is also transmitted to the motion assembly through the retraction transmission assembly, and the motion assembly drives the control unit card holder to move forward, and then drives the catheter retraction card slot installed on the control unit card holder to move forward. The forward movement of the catheter retraction card slot drives the imaging probe of the diagnostic catheter to retract.

2. The miniaturized interventional ultrasound diagnostic system according to claim 1, wherein The miniaturized interventional ultrasound diagnostic system further includes a signal transmitting and receiving processing module, a motion coupling module, a power supply module, and a signal wireless transmission module. Each module in the miniaturized interventional ultrasound diagnostic system is integrated into a compact structure.

3. The miniaturized interventional ultrasound diagnostic system according to claim 2, wherein, The motor control circuit is connected to the motor, the motor is connected to the motion coupling module, the motion coupling module is connected to the motion assembly, the motion assembly is connected to the diagnostic catheter, the signal transmitting and receiving processing module is connected to the motion coupling module, the signal wireless transmission module is connected to the signal transmitting and receiving processing module, and the power supply module is used to supply power to each module.

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