WO2020118704A1

WO2020118704A1 - Multi-frequency planar-array endoscopic ultrasonography system

Info

Publication number: WO2020118704A1
Application number: PCT/CN2018/121282
Authority: WO
Inventors: 马腾; 李永川; 王丛知; 黄继卿
Original assignee: 深圳先进技术研究院
Priority date: 2018-12-14
Filing date: 2018-12-14
Publication date: 2020-06-18

Abstract

Disclosed is a multi-frequency planar-array endoscopic ultrasonography system. The system is provided with an ultrasonic probe portion, wherein the ultrasonic probe portion comprises a high-frequency ultrasonic probe portion (21) for ultrasonically scanning an affected part in a body being examined, and a low-frequency ultrasonic probe portion (20) for ultrasonically treating the affected part in the body being examined. An insertion portion (10) is led into the body being examined. During ultrasonic scanning, the ultrasonic probe portion is in ultrasonic cooperation with a handling instrument (50). The high-frequency ultrasonic probe portion (21) carries out scan imaging on the affected part in the body being examined, and after a pre-determined treatment area is obtained, and the low-frequency ultrasonic probe portion (20) is used to ultrasonically treat the affected part. After the affected part in the body being examined is scanned using a high-frequency ultrasonic wave, ultrasonic treatment can be directly carried out by means of a low-frequency ultrasonic wave, thus ultrasonic imaging and treatment can be simultaneously carried out by means of only inserting the endoscopic ultrasonography system into the body being examined once, and relieving the burden placed on patients.

Description

Multi-frequency area array ultrasonic endoscope system

Technical field

The present application relates to the technical field of endoscopes, and more particularly, to a multi-frequency area array ultrasound endoscope system.

Background technique

Ultrasonic endoscopy (Endoscopic Ultrasonography System, EUS) is a medical device that combines ultrasound and endoscopy. When the endoscope enters the body cavity, perform a tomographic scan of the internal organ wall or adjacent organs under the direct view of the endoscope to obtain ultrasound images of various levels below the mucosa of the internal organ wall and surrounding adjacent organs, such as the mediastinum, pancreas, bile ducts and Lymph nodes, etc., have great advantages in staging of gastrointestinal tumors and judging the nature of tumors originating from the intestinal wall. Not only that, the ultrasound endoscopic system can also use ultrasound echo signals to generate ultrasound images to guide real-time fine needle aspiration biopsy (Fine-Needle Aspiration, FNA), tumor injection treatment, pancreatic cyst puncture and drainage surgery, etc.

The two-dimensional area array probe can not only perform real-time volume imaging, guide puncture and other biopsies, but also use the two-dimensional HIFU probe to perform precise ablation and other operations on the lesion after the diagnosis of the lesion, which provides powerful ultrasound imaging diagnosis and treatment for the ultrasound endoscope system. tool.

The two-dimensional area array probe can realize three-dimensional ultrasound imaging, which is more advantageous for displaying the coronal plane of related organs or lesions; it can display the overall anatomy of a certain organ more completely; it can accurately measure a certain organ or disease Quantitative diagnosis of the size and volume of the structure; can accurately display the three-dimensional shape and spatial position of the lesion for accurate ultrasound-guided interventional treatment; use color energy technology to reconstruct the three-dimensional blood vessel, display the three-dimensional shape, spatial structure and direction of the blood vessel, tumor and blood vessel The spatial position relationship, etc., which helps to judge the benign and malignant tumors and the choice of surgical plan. The working frequency of ultrasound probes for volume imaging is generally higher, greater than 3MHz.

On the other hand, the orientation and distance that can be focused using the two-dimensional area array beam can be adjusted, and it can also be used to replace conventional puncture surgery with a treatment tool for tumor injection treatment through a biopsy channel. Use the HIFU probe directly to ablate the tumor in the affected area and burn out the cancer cells in the tumor. The working frequency of HIFU probes is generally low (0.5MHz-3MHz).

Ultrasonic probes can achieve different functions at different operating frequencies. However, the existing ultrasonic probes can only use one frequency in ultrasonic endoscopes, which cannot take into account imaging and treatment, resulting in a single ultrasonic probe function and increased patient burden.

Therefore, how to balance the imaging and treatment functions of the ultrasonic endoscope is a problem that needs to be solved urgently by those skilled in the art.

Summary of the invention

In view of this, an embodiment of the present invention provides a multi-frequency area array ultrasound endoscope system to take into account the imaging and treatment functions of the ultrasound endoscope.

In order to achieve the above objectives, the present invention provides the following technical solutions:

A multi-frequency area array ultrasound endoscope system includes an insertion portion capable of being introduced into a subject, a front end portion of the insertion portion is provided with a treatment instrument channel penetration opening for guiding the treatment instrument to extend, and cooperates with the treatment instrument Ultrasonic probe section for ultrasonic scanning;

The ultrasonic probe section includes a high-frequency ultrasonic probe section that performs ultrasonic scanning on an affected part in the subject, and a low-frequency ultrasonic probe section that performs ultrasonic treatment on the affected part in the subject.

Preferably, in the above-mentioned multi-frequency area array ultrasound endoscope system, the ultrasound probe portion and the treatment instrument channel penetration are distributed on both sides of the front end portion in the radial direction, and the low frequency scanning area of the low frequency ultrasound probe portion A high-frequency scanning area of the high-frequency ultrasonic probe portion covers the entrance and exit area of the treatment instrument, and the amplitude direction of the high-frequency ultrasonic probe portion and the amplitude direction of the low-frequency ultrasonic probe portion are orthogonally arranged.

Preferably, in the above-mentioned multi-frequency area array ultrasound endoscope system, the ultrasound end face of the ultrasound probe part and the insertion axis of the insertion part are arranged diagonally and crosswise.

Preferably, in the above-mentioned multi-frequency area array ultrasonic endoscope system, the high-frequency ultrasonic probe section includes a plurality of high-frequency ultrasonic vibrators arranged in an arc-shaped array of ultrasonic end faces; the low-frequency ultrasonic probe section includes a plurality of ultrasonic end faces Low-frequency ultrasonic vibrators arranged in an arc-shaped array.

Preferably, in the above multi-frequency area array ultrasonic endoscope system, the high-frequency ultrasonic vibrator and the low-frequency ultrasonic vibrator are both piezoelectric elements using piezoelectric ceramics and their composite materials, single crystal ferroelectric materials and their composites Materials, such as single crystal materials, electrostrictive elements, or ultrasonic vibrators prepared by ultrasonic transducers using micromechanical technology.

Preferably, in the above-mentioned multi-frequency area array ultrasonic endoscope system, the piezoelectric vibrators of the high-frequency ultrasonic probe portion and the low-frequency ultrasonic probe portion are arranged in an up-down structure, a left-right structure, or a high-frequency inner and outer low-frequency surrounding structure .

Preferably, in the above-mentioned multi-frequency area array ultrasonic endoscope system, the high-frequency ultrasonic vibrator is independently driven, and the focus point of the high-frequency ultrasonic probe portion is controlled by the drive timing of the adjacent high-frequency ultrasonic vibrator before and after delayed drive control Adjustable.

Preferably, in the above-mentioned multi-frequency area array ultrasonic endoscope system, the ultrasonic frequency of the high-frequency ultrasonic probe section is greater than 3 MHz; the ultrasonic frequency of the low-frequency ultrasonic probe section is 0.5-3 MHz.

Preferably, the above-mentioned multi-frequency area array ultrasound endoscope system further includes a bending part, a flexure tube part and an operation part sequentially connected to the base end of the insertion part, and a fluid sending-out is also provided on the front end part of the insertion part Unit, imaging device, and lighting device; the operation unit is connected to an ultrasound observation control unit, an image display device, and a power ultrasound generation system.

Preferably, in the above-mentioned multi-frequency area array ultrasonic endoscope system, the ultrasonic observation control section controls the high-frequency ultrasonic probe section to transmit ultrasonic waves to a specified area, and receives a reflection signal from the specified area.

The multi-frequency area array ultrasound endoscope system provided by the present invention includes an insertion portion that can be introduced into the subject, and a distal end portion of the insertion portion is provided with a treatment instrument channel penetration opening that guides the treatment instrument to extend and cooperates with the treatment instrument to perform ultrasound Ultrasonic probe section for scanning; the ultrasonic probe section includes a high-frequency ultrasonic probe section that performs ultrasonic scanning on the affected part in the subject, and a low-frequency ultrasonic probe section that performs ultrasonic treatment on the affected part in the subject. The ultrasound endoscope system is introduced into the subject for ultrasound scanning by its insertion part. The treatment instrument channel penetration is located at the front end of the insertion part. An ultrasound probe part is also provided on the front end part. During the ultrasound scanning process, the ultrasound probe part The treatment instruments protruding from the channel penetration opening are coordinated by ultrasound. The ultrasound probe section is provided with a high-frequency ultrasound probe section and a low-frequency ultrasound probe section at the same time. The high-frequency ultrasound probe section scans the affected area in the subject to obtain a predetermined treatment area. The low-frequency ultrasonic probe section performs ultrasonic treatment on the affected area. By performing both high-frequency and low-frequency ultrasonic scanning on the ultrasonic probe section at the same time, and matching the ultrasonic scan with the extended position of the treatment instrument, the high-frequency ultrasonic wave is scanned into the affected area in the subject After that, ultrasonic treatment can be carried out directly by low-frequency ultrasound. At the same time, an ultrasound endoscope system is inserted into the subject, and ultrasound imaging and treatment are performed at the same time, reducing the burden on the patient.

BRIEF DESCRIPTION

1 is a structural diagram of a multi-frequency area array ultrasound endoscope system provided by the present invention;

2 is a schematic diagram of the structure of the insertion part in the multi-frequency area array ultrasonic endoscope system in FIG. 1;

Figure 3 is a cross-sectional view of Figure 2;

4 is a projection view of the ultrasonic scanning area of the insertion part in FIG. 2;

5 is a schematic diagram of a first arrangement structure of an ultrasonic probe part in a multi-frequency area array ultrasonic endoscope system provided by the present invention;

6 is a schematic diagram of a second arrangement structure of an ultrasonic probe part in a multi-frequency area array ultrasonic endoscope system provided by the present invention;

7 is a schematic diagram of a third arrangement structure of an ultrasonic probe part in a multi-frequency area array ultrasonic endoscope system provided by the present invention.

detailed description

The invention discloses a multi-frequency area array ultrasonic endoscope system, which takes into account the imaging and treatment functions of the ultrasonic endoscope.

The technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without making creative efforts fall within the protection scope of the present invention.

As shown in FIGS. 1-4, FIG. 1 is a structural diagram of a multi-frequency area array ultrasound endoscope system provided by the present invention; FIG. 2 is a schematic structural diagram of an insertion portion in the multi-frequency area array ultrasound endoscope system in FIG. 1; FIG. 3 is a cross-sectional view of FIG. 2; FIG. 4 is a projection view of the ultrasonic scanning area of the insertion portion in FIG.

The present application provides a multi-frequency area array ultrasound endoscope system, which includes an insertion portion 10 that can be introduced into a subject. The front end portion 11 of the insertion portion 10 is provided with a treatment instrument channel through-hole 17 that guides the treatment instrument to extend An ultrasound probe unit that performs ultrasound scanning in conjunction with a treatment instrument; the ultrasound probe unit includes a high-frequency ultrasound probe unit 21 that performs ultrasound scanning on an affected part in the subject, and a low-frequency ultrasound probe unit 20 that performs ultrasonic treatment on the affected part in the subject. The ultrasound endoscope system is introduced into the subject by the insertion part 10 to perform ultrasound scanning. The treatment instrument channel through-hole 17 is located at the front end 11 of the insertion part 10. The front end 11 is also provided with an ultrasound probe part. During the ultrasound scanning process, the ultrasound probe part In the process, the treatment instrument extending through the treatment instrument channel through-hole 17 is subjected to ultrasound coordination. The ultrasound probe section is provided with a high-frequency ultrasound probe section 21 and a low-frequency ultrasound probe section 20 at the same time. The high-frequency ultrasound probe section 21 scans the affected area in the subject After imaging, after obtaining a predetermined treatment area, the low-frequency ultrasonic probe section 20 performs ultrasonic treatment on the affected area, by simultaneously performing high-frequency and low-frequency ultrasonic scanning on the ultrasonic probe section, and matching the ultrasonic scanning with the extended position of the treatment instrument, After the high-frequency ultrasound scans the affected part in the subject, the ultrasound treatment can be performed directly by the low-frequency ultrasound. At the same time, the ultrasound endoscopic system is inserted into the subject, and the ultrasound imaging and treatment are performed at the same time, reducing the burden on the patient.

In a specific embodiment of the present case, the ultrasonic probe portion and the treatment instrument channel penetration opening 17 are distributed on both sides in the radial direction of the front end portion 11, the low frequency scanning area L2 of the low frequency ultrasonic probe portion 20 and the high frequency scanning of the high frequency ultrasonic probe portion 21 The area L1 covers the entry and exit area of the treatment instrument 50, and the amplitude direction of the high-frequency ultrasonic probe portion 21 and the amplitude direction of the low-frequency ultrasonic probe portion 20 are arranged orthogonally. The scanning areas of the high-frequency ultrasonic probe portion 20 and the low-frequency ultrasonic probe portion 21 both cover the entry and exit areas of the treatment instrument 50. After the affected area is determined, the low-frequency ultrasonic probe portion 20 and the treatment instrument 50 can be used to treat the affected area.

The ultrasonic probe portion and the treatment instrument channel through-hole 17 are located on both sides of the radial direction of the front end portion 11, respectively, making full use of the space of the front end portion, and providing sufficient space for the ultrasonic probe portion to be arranged. At the same time, since the ultrasonic probe section guides the treatment instrument to perform ultrasonic treatment, the high-frequency ultrasonic probe section 21 and the low-frequency ultrasonic probe section 20 need to accurately focus on the affected part in the subject, and the scanning of the high-frequency ultrasonic probe section 21 and the low-frequency ultrasonic probe section 20 The areas are all three-dimensional arc-shaped scanning areas. The exit axis of the treatment instrument channel penetration 17 is the extension direction of the treatment instrument. The length of the extension of the treatment instrument 50 should fall in both the low-frequency scanning area L2 and the high-frequency scanning area L1 . At the same time, the amplitude direction of the low-frequency ultrasonic probe portion 20 and the amplitude direction of the high-frequency ultrasonic probe portion are orthogonally arranged. By orthogonally arranging the ultrasonic amplitude, a focal point for scanning the affected area can be formed in the direction of entry and exit of the treatment instrument 50, thereby Further improve the treatment and imaging observation of the affected area.

Preferably, the access area of the treatment instrument is located in the center of the high-frequency scanning area L1 and the low-frequency scanning area L2, that is, the central area of the high-frequency scanning area L1 and the low-frequency scanning area L2 is arranged along the axial direction of the treatment instrument channel penetration, further Improve the accurate positioning of the affected area in the subject.

It should be noted that the ultrasonic scanning areas of the high-frequency ultrasonic probe portion 21 and the low-frequency ultrasonic probe portion 20 are both arc-shaped three-dimensional structures. FIG. 4 shows the projection of the amplitude direction of the two along the axial section view of the insertion portion 10 , The high frequency scanning area L1 and the low frequency scanning area L2 shown in FIG. 4 only represent the scanning area along the high and low frequency amplitude direction, where the low frequency scanning area represents the position of its focus point 80, and is not strictly expressed in the projection direction, the high and low frequency amplitude The positional relationship of the directions is still orthogonal.

In a specific embodiment of the present case, the ultrasound end face of the ultrasound probe part and the insertion axis of the insertion part 10 are arranged diagonally and crosswise. The ultrasonic probe part includes an ultrasonic probe part mounting support protruding from the front end part 11, the mounting end surface of the mounting support is arranged obliquely to the axial direction of the insertion part 10, the ultrasonic vibrator of the ultrasonic probe part is mounted on the mounting bracket, and its ultrasonic end surface is It is the mounting end face of the mounting bracket. The axial direction of the treatment instrument channel penetration opening 17 is substantially the same as the direction of the ultrasound end surface of the ultrasound probe part, so that after the treatment instrument is extended, its extended end is located in the ultrasound scanning area of the ultrasound probe part. The ultrasonic probe parts (20, 21) are located in the mounting bracket, the insertion part 10 is inserted into the subject, and the affected part in the subject is located in the circumferential direction of the insertion part 10. Therefore, the treatment instrument channel through-hole 17 and the circumferential direction of the insertion part 10 are A certain angle is convenient for the treatment instrument 50 to extend to the affected area. Correspondingly, the ultrasound end surface is arranged obliquely with respect to the axial direction of the insertion portion 10, that is, the scanning direction of the ultrasound probe portion (20, 21) and the insertion shaft 10 are at a certain oblique angle, and the ultrasound treatment is performed in conjunction with the treatment instrument 50.

In a specific embodiment of the present case, the high-frequency ultrasonic probe portion 21 includes a plurality of high-frequency ultrasonic vibrators arranged in a circular arc-shaped array of ultrasonic end faces; the low-frequency ultrasonic probe portion 20 includes a plurality of low-frequency ultrasonic waves arranged in a circular arc-shaped array of ultrasonic end faces Vibrator. The high-frequency ultrasonic probe portion 21 and the low-frequency ultrasonic probe portion 20 are both mounted on the mounting bracket of the ultrasonic probe portion of the front end portion 11, the high-frequency ultrasonic probe portion 21 is composed of a plurality of high-frequency ultrasonic vibrators, and a plurality of high-frequency ultrasonic vibrator arrays are arranged And, it has an arc-shaped structure on the ultrasonic end surface, specifically, the high-frequency ultrasonic probe portion 21 has a circular arc end surface that gradually protrudes from the edge to the middle. At the same time, the low-frequency ultrasonic probe section 20 is arranged by a plurality of low-frequency ultrasonic vibrator arrays, and its ultrasonic end face is also set as an arc-shaped ultrasonic end face.

Of course, the ultrasonic end faces of the low-frequency ultrasonic probe section 20 and the high-frequency ultrasonic probe section 21 can also be arranged in a planar structure, the ultrasonic end faces of the low-frequency ultrasonic transducer and the high-frequency ultrasonic transducer are flush, and two-dimensional scanning of the affected part in the subject can also be achieved .

Preferably, the high-frequency ultrasonic probe section 21 and the low-frequency ultrasonic probe section 20 of the arc-shaped structure are such that the ultrasonic beams emitted by the high-frequency ultrasonic probe section and the low-frequency ultrasonic probe section are in a diffuse fan-shaped scanning area, expanding the high-frequency ultrasonic probe The scanning range of the unit 21 and the low-frequency ultrasonic probe unit 20 is more conducive to the scanning and positioning of the affected area.

In a specific embodiment of this case, the high-frequency ultrasonic vibrator and the low-frequency ultrasonic vibrator are both piezoelectric elements such as piezoelectric ceramics and their composite materials, single crystal materials such as monocrystalline ferroelectric materials and their composite materials, electrostrictive elements or Ultrasonic vibrator prepared using micromachined ultrasonic transducer.

As shown in FIGS. 5-7, FIG. 5 is a schematic diagram of a first arrangement structure of an ultrasonic probe part in a multi-frequency area array ultrasound endoscope system provided by the present invention; FIG. 6 is a multi-frequency area array ultrasound endoscope system provided by the present invention FIG. 7 is a schematic diagram of the third arrangement structure of the ultrasonic probe section in the multi-frequency area array ultrasonic endoscope system provided by the present invention.

In a specific embodiment of the present case, the piezoelectric vibrators of the high-frequency ultrasonic probe portion 21 and the low-frequency ultrasonic probe portion 20 are arranged in an up-down structure, a left-right structure, or a surrounding structure with high frequencies inside and outside low frequencies. In FIG. 5, the treatment instrument 50 is arranged on the top in a forward direction, and the ultrasound probe portion may be arranged in a high-frequency ultrasound probe portion 21 on top and a low-frequency ultrasound probe portion 20 on the bottom, and the two may also be arranged in reverse.

In FIG. 6, it may be arranged that the high-frequency ultrasonic probe portion 21 is on the left and the low-frequency ultrasonic probe portion 20 is on the right, and the two may also be arranged in reverse.

In FIG. 7, the high-frequency ultrasonic probe portion 21 may be arranged in the middle, and the low-frequency ultrasonic probe portion 20 may be arranged around the periphery.

In a specific embodiment of the present case, the high-frequency ultrasonic vibrator is independently driven, and the focus point of the high-frequency ultrasonic probe portion 21 is adjustable before and after the drive timing delay drive control of adjacent high-frequency ultrasonic vibrators. The high-frequency ultrasonic transducers arranged in an array in the high-frequency ultrasonic probe section 21, each ultrasonic vibrator adopts an independent driving structure, and the start driving timing of each high-frequency ultrasonic vibrator is controlled by delay, so that the focus point 80 of the high-frequency ultrasonic probe section 21 The position can be adjusted back and forth, when the treatment operation is performed on the subject, the treatment instrument 50 is extended from the treatment instrument channel through-hole 17, specifically, if the treatment instrument 50 is a puncture needle, the front end of the insertion portion 10 of the ultrasonic endoscope system The distance between the part and the affected part is different. The length of the puncture needle needs to be adjusted according to the distance between the affected part and the front end. By adjusting the focus point of the high-frequency ultrasonic probe part forward and backward, the puncture needle can be adjusted during the surgical operation. Accurate three-dimensional data can be obtained at different distances in the treatment of the affected area, and higher-resolution three-dimensional images can be obtained to improve the treatment effect of the treatment operation.

In a specific embodiment of the present case, the ultrasonic frequency of the high-frequency ultrasonic probe portion 21 is greater than 3 MHz; the ultrasonic frequency of the low-frequency ultrasonic probe portion 20 is 0.5-3 MHz.

In a specific embodiment of the present case, it further includes a bending portion 12, a flexure tube portion 13 and an operation portion 30 connected to the base end of the insertion portion in sequence, and the front end portion 11 of the insertion portion 10 is further provided with a fluid delivery portion 14 and an imaging device 15 And the lighting device 16; the operation unit 30 is connected to the ultrasound observation control unit 3, the image display device 4, and the power ultrasound generation system 5.

The ultrasonic endoscope system provided in this case is sent into the subject by the insertion part 10 with the dual-frequency ultrasonic probe part, and the proximal end of the insertion part 10 is connected to the bending part 12 and the flexure tube part 13 to send the insertion part 10 into the test The front end portion of the insertion portion 10 is composed of the fluid delivery portion 14, the imaging device 15, and the lighting device 16. Inside the insertion portion 10, the bending portion 12, and the flexure tube portion 13, a treatment instrument through line 18 is provided, and the treatment instrument through the line 18 is communicated by the tube head 34, the puncture needle is inserted from the tube head through the treatment instrument channel through-out port 17, the tube head 34 is provided on the operation part 30, and the operation part 30 is provided with an angle knob for operating the bending of the bending part 12 31. An air and water supply button 32 for controlling the operation of sending out the fluid from the fluid sending part 14 provided in the front end portion 10, and a suction button 33 for controlling the operation of sucking the fluid from the treatment instrument insertion port 17, Cooperate with the ultrasonic probe part and treatment equipment for ultrasonic imaging and treatment.

The ultrasound probe section is further provided with an ultrasound observation control section 3, an image display device 4 and a power ultrasound generating system 5. The base end of the operation section 30 is connected to a universal cable 40, and the base end portion of the universal cable 40 is provided with a light source device 6 The connected endoscope connector 41 transmits the light emitted from the light source device 6 along the universal cable 40, the operation portion 30, and the optical fiber cable inserted into the insertion portion 10, and is emitted from the illumination device 16 of the front end portion 11.

The electric cable 42 and the high-frequency ultrasonic cable 44 and the low-frequency ultrasonic cable 46 extend from the endoscope connector 41. The electrical cable 42 is detachably connected to the camera control unit via an electrical connector. The camera control unit is electrically connected to the imaging device 15 provided at the front end portion 11 through an electric cable 42. The camera control unit is electrically connected to the image display device 4, and outputs the image captured by the imaging device 15 to the image display device 4.

The high-frequency ultrasonic cable 44 is detachably connected to the ultrasonic observation control unit 3 via the ultrasonic connector 45, and the low-frequency ultrasonic cable 46 is detachably connected to the ultrasonic generating system 5 via the ultrasonic connector 47.

In a specific embodiment of the present case, the ultrasonic observation control section 3 controls the high-frequency ultrasonic probe section 21 to transmit ultrasonic waves to a specified area, and receive the reflection signal of the specified area. During the insertion process of the insertion part 10, the high-frequency ultrasonic probe part 21 emits ultrasonic waves to a designated area in the subject, and performs two-dimensional ultrasonic scanning of the designated area to form a three-dimensional ultrasound image. Volume imaging can include a high-frequency scanning area L1 and low frequency The area formed by the scanning area L2. The low-frequency ultrasonic probe part 20 performs precise ablation and other operations on the affected area in the volume imaging formed by the high-frequency ultrasonic probe part 21, and the effect of the ablation and other operations can also be observed and tested through the volume imaging.

In this article, specific examples are used to explain the principle and implementation of the present invention. The description of the above examples is only used to help understand the core idea of the present invention. It should be noted that, for those of ordinary skill in the art, without departing from the principles of the present invention, the present invention may also be subject to several improvements and modifications, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

A multi-frequency area array ultrasound endoscope system, characterized in that it includes an insertion portion that can be introduced into the subject, a front end portion of the insertion portion is provided with a treatment instrument channel through-hole for guiding the extension of the treatment instrument and The ultrasonic probe part of the treatment instrument cooperating with the ultrasonic scanning;

The ultrasonic probe section includes a high-frequency ultrasonic probe section that performs ultrasonic scanning on an affected part in the subject, and a low-frequency ultrasonic probe section that performs ultrasonic treatment on the affected part in the subject.
The multi-frequency area array ultrasonic endoscope system according to claim 1, wherein the ultrasonic probe portion and the treatment instrument channel penetration are distributed on both sides in the radial direction of the front end portion, and the low-frequency ultrasonic probe The low-frequency scanning area of the section and the high-frequency scanning area of the high-frequency ultrasonic probe section cover the entry and exit areas of the treatment instrument, and the amplitude direction of the high-frequency ultrasonic probe section and the amplitude direction of the low-frequency ultrasonic probe section are orthogonally arranged .
The multi-frequency area array ultrasound endoscope system according to claim 2, wherein the ultrasound end surface of the ultrasound probe portion and the insertion axis of the insertion portion are arranged diagonally and crosswise.
The multi-frequency area array ultrasonic endoscope system according to claim 3, wherein the high-frequency ultrasonic probe section includes a plurality of high-frequency ultrasonic vibrators arranged in an arc-shaped array of ultrasonic end faces; the low-frequency ultrasonic probe section It includes a plurality of low-frequency ultrasonic vibrators arranged in an array of circular arc-shaped end faces.
The multi-frequency area array ultrasonic endoscope system according to claim 4, wherein the high-frequency ultrasonic vibrator and the low-frequency ultrasonic vibrator are both piezoelectric elements such as piezoelectric ceramics and their composite materials, single crystal iron Ultrasonic vibrators prepared from single crystal materials such as electrical materials and their composite materials, electrostrictive elements, or ultrasonic transducers using micromechanical technology.
The multi-frequency area array ultrasonic endoscope system according to claim 2, wherein the piezoelectric vibrators of the high-frequency ultrasonic probe section and the low-frequency ultrasonic probe section have an up-down structure, a left-right structure, or a high frequency at an internal low frequency The outer surrounding structure is arranged.
The multi-frequency area array ultrasonic endoscope system according to claim 4, wherein the high-frequency ultrasonic transducer is independently driven, and the focus point of the high-frequency ultrasonic probe section is driven by the adjacent high-frequency ultrasonic transducer Timing delay drive control is adjustable before and after.
The multi-frequency area array ultrasonic endoscope system according to claim 1, wherein the ultrasonic frequency of the high-frequency ultrasonic probe section is greater than 3MHZ; the ultrasonic frequency of the low-frequency ultrasonic probe section is 0.5-3MHz.
The multi-frequency area array ultrasound endoscope system according to claim 1, further comprising a bending part, a flexure tube part and an operation part connected to the base end of the insertion part in sequence, the front end part of the insertion part A fluid sending part, an imaging device, and a lighting device are also provided; the operation part is connected with an ultrasound observation control part, an image display device, and a power ultrasound generating system.
The multi-frequency area array ultrasonic endoscope system according to claim 9, wherein the ultrasonic observation control section controls the high-frequency ultrasonic probe section to transmit ultrasonic waves to a designated area, and receives a reflection signal from the designated area.