CN211213246U - Intravascular ultrasonic diagnosis system - Google Patents

Abstract

The application discloses intravascular ultrasonic diagnostic system includes: the ultrasonic diagnosis device comprises a catheter assembly, an ultrasonic transducer arranged in the catheter assembly, and a magnetic driving unit which is arranged in the catheter assembly and connected with the ultrasonic transducer and used for rotating the ultrasonic transducer; the magnetic driving unit is formed by rotationally stacking a plurality of magnets at target magnetic poles according to a preset angle, wherein the stacking direction is along the axial direction of the rotating direction; an extracorporeal portion disposed externally of the body being diagnosed, the extracorporeal portion comprising: and the alternating magnetic field generating unit is formed by arranging a plurality of groups of electromagnetic coils and is used for generating an alternating magnetic field corresponding to the rotating speed of the ultrasonic transducer. This application is through piling up and the magnetic drive unit drive ultrasonic transducer synchronous rotation that forms according to predetermineeing the angle rotation with the target magnetic pole by a plurality of magnets, and the magnetic drive unit drives ultrasonic transducer and steadily rotates, and the echo signal who obtains is even, and the imaging effect is showing and is improving.

Description

Intravascular ultrasonic diagnosis system

Technical Field

The application relates to the technical field of intravascular ultrasonic echo imaging, in particular to an intravascular ultrasonic diagnostic system.

Background

The intravascular ultrasound (IVUS) technology brings unprecedented convenience and rapidness to diagnosis and treatment of cardiovascular diseases, greatly improves the accuracy of judgment conclusion on the degree and the property of cardiovascular stenosis, and enables a conventionally adopted stent repair treatment scheme to have more detailed and reliable data parameters. Especially the composition of vulnerable plates in blood vessels, the severity of atherosclerosis and other advantages, which cannot be achieved by other diagnostic techniques.

The intravascular ultrasonic diagnosis system is characterized in that a metal steel wire hose with the length of about 1.6 meters is used as a driving shaft, and the metal steel wire hose is inserted into a blood vessel in a human body from the lower limb and extends to the heart-proximal part through the blood vessel. The soft wire driving shaft is driven by a motor to rotate at the tail end outside the body, and the rotation is transmitted to the ultrasonic transducer at the other end close to the center by the soft wire driving shaft to drive the transducer to rotate. And simultaneously, the other motor drives the driving shaft to do withdrawing action. In order to prevent the rotating flexible shaft from damaging blood vessels, the whole flexible wire driving shaft device is arranged in the rubber catheter. The whole rotating part of the intravascular ultrasonic diagnostic system has complex process and poor reliability, so that a mode that the permanent magnet drives the ultrasonic transducer to rotate can be adopted in the process of acquiring ultrasonic signals, but in the process of driving the ultrasonic transducer to rotate by adopting the rotation of the permanent magnet, the permanent magnet only has two N-S poles, and the rotating speed of the permanent magnet is not uniform under the driving of an external alternating magnetic field, so that the pulses of the ultrasonic transducer for transmitting ultrasonic waves and receiving ultrasonic echo signals are not uniformly distributed in the circumferential direction (time), and the subsequent ultrasonic imaging effect is influenced.

Therefore, how to provide a solution to at least one of the above technical problems is a problem that needs to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

The application aims to provide an intravascular ultrasonic diagnostic system which can solve the problem of low stability of a single magnetic driving unit for driving an ultrasonic transducer to rotate. The specific scheme is as follows:

the present application provides an intravascular ultrasound diagnostic system comprising: the ultrasonic diagnosis device comprises a catheter assembly and an ultrasonic transducer arranged in the catheter assembly, and further comprises a magnetic driving unit which is arranged in the catheter assembly and connected with the ultrasonic transducer and used for rotating the ultrasonic transducer;

the magnetic driving unit is formed by rotationally stacking a plurality of magnets at target magnetic poles according to a preset angle, and the stacking direction is along the axial direction of the rotating direction;

an extracorporeal portion disposed externally of a body being diagnosed, the extracorporeal portion comprising:

and the alternating magnetic field generating unit is formed by arranging a plurality of groups of electromagnetic coils and is used for generating an alternating magnetic field corresponding to the rotating speed of the ultrasonic transducer.

Optionally, the method further includes: a high frequency resonance transceiver unit arranged in the catheter assembly and used for generating corresponding excitation pulses according to the electric pulses received from the extracorporeal part so that the ultrasonic transducer generates ultrasonic waves according to the excitation pulses;

correspondingly, the extracorporeal part further comprises: a high frequency pulse transceiving unit for transmitting the electric pulse corresponding to the ultrasonic frequency to an internal body part.

Optionally, the alternating magnetic field generating unit includes a plurality of sets of electromagnetic coils, wherein the number of sets of electromagnetic coils corresponds to the number of magnets, and when the alternating magnetic field generating unit corresponds to the position of the magnetic driving unit, each set of electromagnetic coils corresponds to the position of each magnet one by one, so that each set of electromagnetic coils drives the corresponding magnets to rotate synchronously.

Optionally, each set of electromagnetic coils includes a plurality of coils, and an arrangement direction of the plurality of coils in each set of electromagnetic coils is perpendicular to an arrangement direction of the plurality of sets of electromagnetic coils.

Optionally, the magnet is in a shape of a cake or a strip.

Optionally, the magnetic driving unit is formed by stacking 12 magnets in 30-degree rotation.

Optionally, the catheter assembly comprises:

and the positioning device is used for fixedly arranging the ultrasonic transducer and the magnetic driving unit so as to ensure that the magnetic driving unit, the ultrasonic transducer and the positioning device synchronously rotate and the ultrasonic transducer realizes annular scanning during rotation.

The present application provides an intravascular ultrasound diagnostic system comprising: the ultrasonic diagnosis device comprises a catheter assembly, an ultrasonic transducer arranged in the catheter assembly, and a magnetic driving unit which is arranged in the catheter assembly and connected with the ultrasonic transducer and used for rotating the ultrasonic transducer; the magnetic driving unit is formed by rotationally stacking a plurality of magnets at target magnetic poles according to a preset angle, wherein the stacking direction is along the axial direction of the rotating direction; an extracorporeal portion disposed externally of the body being diagnosed, the extracorporeal portion comprising: and the alternating magnetic field generating unit is formed by arranging a plurality of groups of electromagnetic coils and is used for generating an alternating magnetic field corresponding to the rotating speed of the ultrasonic transducer.

It can be seen that the magnetic drive unit of this application is piled up and forms according to predetermineeing the angle rotation by a plurality of magnets with the target magnetic pole, the solenoid drive magnetic drive unit that produces the unit through the alternating magnetic field of external part rotates, because every a set of solenoid corresponds a magnet, magnetic drive unit's control is more steady, consequently, can solve single magnetic drive unit and drive ultrasonic transducer pivoted low stability's problem, magnetic drive unit drives ultrasonic transducer steady rotation simultaneously, the echo signal that obtains is even, the imaging effect is showing and is improving.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an intravascular ultrasound diagnostic system according to an embodiment of the present disclosure;

FIGS. 2A-2C are schematic assembly views of various catheter assemblies provided in accordance with embodiments of the present application;

FIG. 3 is a transverse cross-sectional view of a single magnet provided in accordance with an embodiment of the present application;

FIG. 4 is a longitudinal cross-sectional view of a single magnet provided in accordance with an embodiment of the present application;

FIG. 5 is a schematic diagram of a magnet and a corresponding set of electromagnetic coils according to an embodiment of the present application;

FIG. 6 is a schematic diagram of an alternative magnet and corresponding set of electromagnetic coils provided by an embodiment of the present application;

fig. 7 is a schematic structural diagram of a high-frequency resonance transceiver unit according to an embodiment of the present application;

fig. 8 is a schematic diagram of a high-frequency resonance transceiver unit according to an embodiment of the present application;

FIG. 9 is a schematic diagram of a positioning principle provided by an embodiment of the present application;

fig. 10 is a detailed schematic diagram of an intravascular ultrasound diagnosis provided in an embodiment of the present application.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an intravascular ultrasound diagnostic system according to an embodiment of the present application, including: the catheter assembly 110, the ultrasonic transducer 130 arranged in the catheter assembly 110, and a magnetic driving unit 140 which is arranged in the catheter assembly 110 and connected with the ultrasonic transducer 130 for rotating the ultrasonic transducer; the magnetic driving unit 140 is formed by a plurality of magnets 141 being rotationally stacked at a predetermined angle with a target magnetic pole, the stacking direction being along the axial direction of the rotation direction.

The embodiment can be applied to IVUS ultrasonic medical technology equipment. The catheter assembly 110 is placed in a blood vessel of a body to be diagnosed, and the diameter, length, and material of the catheter assembly 110 are not limited in this embodiment as long as the object of the embodiment can be achieved. The catheter assembly 110 has an ultrasonic transducer 130 and a magnetic drive unit 140 disposed therein.

In another embodiment of the intravascular ultrasound diagnostic system provided herein, further described with respect to the catheter assembly 110, the catheter assembly 110 further comprises: and the positioning device is used for fixedly arranging the ultrasonic transducer 130 and the magnetic driving unit 140 so as to enable the positioning device to synchronously rotate with the magnetic driving unit 140 and the ultrasonic transducer 130, so that the ultrasonic transducer 130 realizes annular scanning during rotation.

The catheter assembly 110 includes: a positioning device and a catheter. In an implementation mode, the positioning device may include a positioning frame 150, a front nested layer 112, and a rear nested layer 113, the positioning frame 150 is disposed between the front nested layer 112 and the rear nested layer 113, a maximum width of the positioning frame 150 is greater than an inner diameter of the front nested layer 112 and an inner diameter of the rear nested layer 113, and the positioning frame is capable of rotating between the front nested layer 112 and the rear nested layer 113, an ultrasonic transducer 130 is fixed outside a side of a rotating shaft of the positioning frame 150, and a magnetic driving unit 140 is further disposed inside the positioning frame 150, so that the positioning device rotates synchronously with the magnetic driving unit 140 and the ultrasonic transducer 130, and the ultrasonic transducer 130 realizes annular scanning when rotating. Further, the ultrasonic transducers 130 are rotated synchronously. The magnetic driving unit 140 and the ultrasonic transducer 130 can stably and synchronously rotate through the positioning device, the structure is simple, the rotating stability is improved, and the strength of echo signals is enhanced.

Of course, other assembly implementations are possible, and reference is made specifically to fig. 2A-2C, which are schematic assembly views of different catheter assemblies 110 provided in the embodiments of the present application. With respect to fig. 2A, catheter assembly 110a includes catheter 111a, front nested layer 112, back nested layer 113, with corresponding magnetic drive unit 140, ultrasonic transducer 130, and high frequency resonant transceiver unit 120 secured between front nested layer 112, back nested layer 113 of catheter assembly 110 a; referring to fig. 2B, duct assembly 110B is duct 111B and a flange corresponding to magnetic driving unit 140 is fixedly disposed on the inner wall of duct assembly 110B, so that the movement of the internal components can be reduced and the service life can be prolonged; referring to fig. 2C, the catheter assembly 110C includes a catheter 111C and a bearing 150, the magnetic driving unit 140 is fixed by the bearing 150, and the magnetic driving unit 140 rotates while controlling the high frequency resonance transceiving unit 120 and the ultrasonic transducer unit 130 to rotate synchronously. Of course, the fixed control can be performed in other ways.

Taking fig. 2A as an example, the outer surface of the front nested layer 112A on the inner wall of the conduit 111a and the outer surface of the rear nested layer 113a on the inner wall of the conduit 111a are coated with lubricating layers. An ultrasonic transducer 130, a magnetic driving unit 140 and the like are arranged between the front nested layer 112a and the back nested layer 113 a. Further, where the rotating part and the fixed part rub, a lubricating layer is applied to reduce friction to ensure friction of the duct assembly 110a with the rotating part. With respect to FIG. 2B, the outer surface of the flange of catheter assembly 110B is coated with a lubricating layer; referring to fig. 2C, the outer surface of bearing 150C of catheter assembly 110C is coated with a lubricating layer. Of course, other than the above, a lubricating layer may be applied between the rotating portion and the fixed portion. Preferably, the lubricating layer is applied by means of vapor coating. Preferably, the lubricating layer is a graphite layer. The graphite has good lubricating property and is not influenced by environmental change, such as good friction reduction performance in water, oil, air, blood and various solutions; the main component of the graphite is carbon which is an essential element for human bodies, the toxicity is low, and the abraded dust can be well absorbed by the human bodies without damage; the graphite has stable performance, can be kept for a long time without deterioration, or can be changed into carbon dioxide in a small amount, and has no toxic or side effect when being oxidized; after part of graphite is changed into oxide to generate gas to be diffused, the rest of the graphite does not influence the lubricating performance, and loss surface supplement in a two-dimensional state can be quickly formed in rotation.

The ultrasonic transducer 130 is used for generating ultrasonic waves according to excitation pulses and generating corresponding ultrasonic echo signals according to received ultrasonic echoes reflected by the vascular wall, the receiving and the signaling of the ultrasonic transducer 130 are realized by an electromagnetic resonance principle through a wireless transmission technology, specifically, a wireless transmission module finished product can be used, a self-designed circuit mode can also be used, the embodiment is not limited, and the purpose of the embodiment can be realized.

And a magnetic driving unit 140 for rotating in the alternating magnetic field and driving the ultrasonic transducer 130 to rotate synchronously. The magnetic driving unit 140 drives the in-vivo ultrasonic transducer unit 130 to rotate 360 degrees, so that the ultrasonic echo reflected by the blood vessel wall is directly transmitted to the ultrasonic transducer unit to be received in a linear and non-reversing reflection mode and is changed into an ultrasonic echo signal, so that the ultrasonic echo image can display an omnibearing real blood vessel tissue image of the blood vessel tissue of the section.

The magnetic driving unit 140 is formed by stacking a plurality of magnets 141 with target magnetic poles rotated by a predetermined angle, and the stacking direction is along the axial direction of the rotating direction.

The magnetic driving unit 140 is formed by a plurality of magnets 141 being rotationally stacked at a predetermined angle with a target magnetic pole, the stacking direction being along the axial direction of the rotation direction. The present application does not limit the structure, shape, width, length of the magnetic driving unit 140 and the number and size of the magnets 141 as long as the object of the present embodiment can be achieved. The number of magnets may be 2, 6, 10, 12 or other numbers as long as the object of the present embodiment can be achieved. The magnetic driving unit 140 is formed by stacking 12 magnets 141 in a 30-degree rotation. The magnet 141 is shaped like a cake or a bar.

In an implementation manner, the magnetic driving unit 140 includes a plurality of magnets 141, and further includes an insulating colloid 142 wrapped around a side of each magnet 141, specifically referring to fig. 3 and 4, fig. 3 is a transverse cross-sectional view of a single magnet provided in an embodiment of the present application, and fig. 4 is a longitudinal cross-sectional view of a single magnet provided in an embodiment of the present application, the side of the single magnet 141 is wrapped with the insulating colloid 142, and planes of positive and negative poles of the magnet 141 are perpendicular to the rotation axis. Further, the magnetic driving unit 140 is cylindrical, and the axis of the cylinder coincides with the axis of the rotation.

An extracorporeal portion disposed externally of the body being diagnosed, the extracorporeal portion comprising: and an alternating magnetic field generating unit 220 formed by arranging a plurality of sets of electromagnetic coils 221 for generating an alternating magnetic field corresponding to the rotation speed of the ultrasonic transducer 130.

The alternating magnetic field generating unit 220 includes a plurality of sets of electromagnetic coils 221 arranged in an array, wherein the number of sets of electromagnetic coils corresponds to the number of the magnets 141, and when the alternating magnetic field generating unit 220 corresponds to the position of the magnetic driving unit 140, each set of electromagnetic coils 221 corresponds to the position of each magnet 141 one by one, so that each set of electromagnetic coils 221 drives the corresponding magnet 141 to rotate synchronously. It is understood that when the number of the magnets 141 is n, the number of the sets of the electromagnetic coils is also n, and the positions of the magnets 141 and the corresponding set of the electromagnetic coils 221 are in one-to-one correspondence, so that each set of the electromagnetic coils 221 drives the corresponding magnet 141 to rotate synchronously. For example, when the magnetic driving unit 140 sequentially includes a 1 st magnet, a 2 nd magnet, a 3 rd magnet, a 4 th magnet, a 5 th magnet, and a 6 th magnet, the alternating magnetic field generating unit sequentially includes a 1 st group of electromagnetic coils, a 2 nd group of electromagnetic coils, a 3 rd group of electromagnetic coils, a 4 th group of electromagnetic coils, a 5 th group of electromagnetic coils, and a 6 th group of electromagnetic coils, wherein the 1 st group of electromagnetic coils drives the 1 st magnet to rotate synchronously, the 2 nd group of electromagnetic coils drives the 2 nd magnet to rotate synchronously, the 3 rd group of electromagnetic coils drives the 3 rd magnet to rotate synchronously, the 4 th group of electromagnetic coils drives the 4 th magnet to rotate synchronously, the 5 th group of electromagnetic coils drives the 5 th magnet to rotate synchronously, and the 6 th group of electromagnetic coils drives the 6 th magnet to rotate synchronously.

For each set of electromagnetic coils 221, in one realizable embodiment, each set of electromagnetic coils 221 in the alternating magnetic field generating unit includes one electromagnetic coil. That is, each magnet 141 corresponds to one set of electromagnetic coils 221, wherein the number of electromagnetic coils in one set of electromagnetic coils 221 is 1. Referring to fig. 5, fig. 5 is a schematic structural diagram of a magnet 141 and a corresponding set of electromagnetic coils according to an embodiment of the present application.

For each set of electromagnetic coils 221, in another implementable embodiment, each set of electromagnetic coils 221 includes a plurality of electromagnetic coils, and the arrangement direction of the plurality of electromagnetic coils in each set of electromagnetic coils 221 is perpendicular to the arrangement direction of the plurality of sets of electromagnetic coils. For example, each set of electromagnetic coils 221 includes 4 electromagnetic coils, and in this case, each magnet 141 corresponds to 4 electromagnetic coils. Referring to fig. 6, fig. 6 is a schematic structural diagram of another magnet and a corresponding set of electromagnetic coils according to an embodiment of the present application.

In one implementable embodiment, the intravascular ultrasound diagnostic system further comprises: a high frequency resonance transceiver unit 120 disposed in the catheter assembly 110 for generating a corresponding excitation pulse according to an electrical pulse received from an extracorporeal portion, so that the ultrasonic transducer 130 generates an ultrasonic wave according to the excitation pulse; correspondingly, the extracorporeal part further comprises: a high frequency pulse transceiver unit 230 for transmitting an electric pulse corresponding to the ultrasonic frequency to the inside of the body.

The hf resonant transceiver 120 is configured to generate a corresponding excitation pulse according to an electrical pulse received from an extracorporeal portion, so that the ultrasonic transducer 130 generates an ultrasonic wave according to the excitation pulse. With reference to the high-frequency resonance transceiver unit 120, please refer to fig. 7 and 8 specifically, fig. 7 is a schematic structural diagram of the high-frequency resonance transceiver unit provided in the embodiment of the present application, and fig. 8 is a schematic principle diagram of the high-frequency resonance transceiver unit provided in the embodiment of the present application, including: a resonance transceiver coil 121; a resonant capacitor 122 connected in series with the resonant transmitting and receiving coil 121; a latent impedance PCB123 connected in parallel with the resonant transmitting and receiving coil 121 and the resonant capacitor 122; both ends of the latent impedance PCB123 are connected to the ultrasonic transducer 130. The resonant transceiver coil 121 may be a 50MHz resonant transceiver coil.

The high-frequency pulse transceiving unit 230 is configured to transmit an electric pulse corresponding to an ultrasonic frequency to the internal body portion and receive an electric signal corresponding to an ultrasonic echo signal returned from the internal body portion.

Wherein the internal body part includes the catheter assembly 110 and all components accommodated in the catheter assembly 110, and the components accommodated in the catheter assembly 110 include: an ultrasonic transducer 130, a magnetic driving unit 140, and a high-frequency resonance transceiver unit 120.

Specifically, the high-frequency pulse transceiving unit 230 includes an ultrasound transceiving module and an ultrasound transceiving antenna connected to the ultrasound transceiving module. The high-frequency pulse transceiver unit 230 may transmit 50MHz ultrasound wave signals with power of about 600W (200V × 3A), or may be ultrasound wave signals with other intensities, which may be set by a user according to an actual lesion examination, and this embodiment is not limited.

The extracorporeal section further comprises: a positioning unit 210. Since the positioning unit 210 is used to position the external part of the body, and is preferably disposed at the edge position to improve the positioning accuracy, and since the alternating magnetic field generating unit 220 is used to generate the alternating magnetic field according to the alternating electric driving signal to drive the rotation of the magnetic driving unit 140, it is preferably disposed at the edge position to improve the accuracy and efficiency of controlling the rotation of the magnetic driving unit 140. The positioning unit 210 may use a magnetic sensitive device, or may use other methods to perform positioning, and the present embodiment does not limit the number of the positioning units 210 any more, as long as the purpose of the present embodiment can be achieved. For example, the positioning unit 210 includes a front hall element and a rear hall element. By providing two positioning units 210, high-precision positioning is achieved.

In this embodiment, referring to fig. 9, fig. 9 is a schematic view of a positioning principle provided in this embodiment of the present application, taking an example that the magnetic driving unit 140 includes a plurality of magnets 141, the positioning unit specifically includes:

the front hall element 211 and the rear hall element 212 are respectively positioned at the front and rear ends of the alternating magnetic field generating unit 220. When the positioning is repeatedly moved outside the body, the front hall element 211 and the rear hall element 212 sense the magnetic field intensity signal of the magnetic driving unit 140 inside the body, the alternating magnetic field generating unit 220 is sent to the ultrasonic main machine, and an algorithm system in the ultrasonic main machine determines whether the alternating magnetic field generating unit 220 is accurately aligned on the corresponding magnet according to the strength change sensed by the two magnetic fields and the different strength difference of the front hall element 211 and the rear hall element 212. When the technician repeatedly moves the external alternating magnetic field generating unit 220 to achieve accurate positioning, the ultrasonic host immediately gives a successful pairing signal, and the technician immediately fixes the external part of the body, so that the examination can be performed at the moment.

In another embodiment of the intravascular ultrasound diagnostic system provided by the present application, the external part further includes a housing, a fixing member disposed on the housing, the fixing member is used to fix the external unit to the body to be diagnosed after the positioning unit 210 is positioned, and the positioning unit 210, the alternating magnetic field generating unit, the high-frequency pulse transceiving unit 230, and the alternating magnetic field generating unit 220 are disposed in the housing.

The extracorporeal portion further comprises a housing. The present embodiment does not limit the size and material of the housing as long as the object of the present embodiment can be achieved. Preferably, the housing may be coated with a flexible material to improve skin-friendliness and enhance user experience. The fixing member in this embodiment is not limited as long as it can fix the external portion of the body. Of course, a handle and an articulated arm may also be included on the housing for the technician to operate.

In another specific embodiment of the intravascular ultrasound diagnostic system provided by the present application, the intravascular ultrasound diagnostic system further comprises: and an ultrasound main unit connected to the external portion of the body, the ultrasound main unit including a control unit for controlling the alternating magnetic field generating unit 220 and/or the high frequency pulse transceiving unit 230.

It is understood that the extracorporeal portion of the intravascular ultrasound diagnostic system is connected to the ultrasound host. The ultrasonic main machine is connected with the display unit, a technician approaches a diagnosed body by using the outside of the body, then determines the position of the magnetic driving unit 140 according to the positioning unit 210, namely, the position is used for displaying an image of the position relation between the inside and the outside of the body in real time, at the moment, the corresponding signal intensity is displayed on the display unit so as to be positioned accurately, and at the moment, the alternating magnetic field generating unit 220 of the outside of the body can drive the magnetic driving unit 140 by a high-efficiency magnetic field. The ultrasonic host sends a rotation command to the alternating magnetic field generating unit 220 so that the alternating magnetic field generating unit 220 generates an alternating magnetic field. Therefore, the positioning picture is displayed through the display unit, so that technicians can conveniently adjust the positioning picture through the blood vessel tissue image until the positioning picture is positioned to the target detection position, the blood vessel tissue image is displayed more truly, and the low efficiency caused by blind movement is reduced. When the ultrasonic transducer 130 is excited by the excitation pulse, the ultrasonic wave with the same frequency is emitted; generating corresponding ultrasonic echo signals according to the received ultrasonic echoes reflected by the vessel wall; the high frequency resonance transceiving unit 120 receives the ultrasonic echo signal, converts the ultrasonic echo signal into an electrical signal, and transmits the electrical signal to an extracorporeal portion. It is known that the ultrasound main unit includes a control unit which controls any one or more of the alternating magnetic field generating unit 220 and the high frequency pulse transceiving unit 230.

Fig. 10 is a specific schematic diagram of intravascular ultrasound diagnosis provided in an embodiment of the present application, and a specific operation process includes:

the magnetic driving unit 140 realizes the synchronous rotation of the ultrasonic transducer 130 and the high frequency resonance transceiving unit 120 by using the alternating magnetic field; wherein the magnetic driving unit 140 is a magnetic driving unit 140 formed by a plurality of magnets 141 stacked with target magnetic poles rotated by a predetermined angle; the high-frequency pulse transceiver unit 230 transmits an electric pulse corresponding to the ultrasonic frequency to the inside of the body; the hf resonant transceiver unit 120 generates corresponding excitation pulses based on the electrical pulses received from the extracorporeal part; the ultrasonic transducer 130 generates ultrasonic waves according to the excitation pulses; generating corresponding ultrasonic echo signals according to the received ultrasonic echoes reflected by the vessel wall; the high frequency resonance transceiving unit 120 receives the ultrasonic echo signal, converts the ultrasonic echo signal into an electrical signal, and transmits the electrical signal to an external part of the body; the high frequency pulse transceiving unit 230 receives the electrical signal; the high frequency pulse transceiving unit 230 converts the electrical signal into a digital signal; the ultrasonic host receives and processes the digital signal and sends the processed digital signal to the display unit; the display unit acquires a blood vessel tissue image according to the processed digital signal. Further, the method also comprises the following steps: when the external part of the body moves, the ultrasonic host reads the currently set parameters; the ultrasonic host controls the external part to generate a corresponding alternating magnetic field and/or a corresponding electric pulse according to the parameters so as to display the current vascular tissue image by the display unit.

The magnetic driving method provided by the application embodiment comprises the following steps: the alternating magnetic field generating unit corresponds to the position of a magnetic driving unit, wherein the magnetic driving unit is formed by rotationally stacking a plurality of magnets at target magnetic poles according to a preset angle, and the stacking direction is along the axial direction of the rotating direction; the alternating magnetic field generating unit consists of a plurality of groups of electromagnetic coils and corresponds to the positions of the magnets one by one. The pulse current is utilized to control a plurality of groups of electromagnetic coils to generate preset polarity magnetism at intervals of a first preset time in sequence, and the duration time of the preset polarity magnetism generated by each group of electromagnetic coils is a second preset time. After the last group of electromagnetic coils generate the preset polarity magnetism, the first group of electromagnetic coils are controlled to generate the preset polarity magnetism at intervals of first preset time so as to realize the rotation of the magnetic driving unit.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Claims (7)

1. An intravascular ultrasound diagnostic system comprising: the ultrasonic diagnosis device comprises a catheter assembly and an ultrasonic transducer arranged in the catheter assembly, and is characterized by further comprising a magnetic driving unit which is arranged in the catheter assembly and connected with the ultrasonic transducer and used for rotating the ultrasonic transducer;

the magnetic driving unit is formed by rotationally stacking a plurality of magnets at target magnetic poles according to a preset angle, and the stacking direction is along the axial direction of the rotating direction;

an extracorporeal portion disposed externally of a body being diagnosed, the extracorporeal portion comprising:

and the alternating magnetic field generating unit is formed by arranging a plurality of groups of electromagnetic coils and is used for generating an alternating magnetic field corresponding to the rotating speed of the ultrasonic transducer.

2. The intravascular ultrasound diagnostic system according to claim 1, further comprising: a high frequency resonance transceiver unit arranged in the catheter assembly and used for generating corresponding excitation pulses according to the electric pulses received from the extracorporeal part so that the ultrasonic transducer generates ultrasonic waves according to the excitation pulses;

correspondingly, the extracorporeal part further comprises: a high frequency pulse transceiving unit for transmitting the electric pulse corresponding to the ultrasonic frequency to an internal body part.

3. The intravascular ultrasound diagnostic system according to claim 1, wherein the alternating magnetic field generating unit includes a plurality of sets of the electromagnetic coils arranged, wherein the number of the sets of the electromagnetic coils corresponds to the number of the magnets, and when the alternating magnetic field generating unit corresponds to the position of the magnetic driving unit, each set of the electromagnetic coils corresponds to the position of each magnet one by one, so that each set of the electromagnetic coils drives the corresponding magnets to rotate synchronously.

4. The intravascular ultrasound diagnostic system according to claim 3, wherein each of the electromagnetic coils includes a plurality of coils, and an arrangement direction of the plurality of coils in each of the electromagnetic coils is perpendicular to an arrangement direction of the plurality of sets of the electromagnetic coils.

5. The intravascular ultrasound diagnostic system of claim 1, wherein the magnet is pie-shaped or strip-shaped.

6. The intravascular ultrasound diagnostic system of claim 1, wherein the magnetic drive unit is formed of 12 of the magnets stacked at 30 degrees of rotation.

7. The intravascular ultrasound diagnostic system of claim 1, wherein the catheter assembly comprises:

and the positioning device is used for fixedly arranging the ultrasonic transducer and the magnetic driving unit so as to ensure that the magnetic driving unit, the ultrasonic transducer and the positioning device synchronously rotate and the ultrasonic transducer realizes annular scanning during rotation.

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