Flexible bendable ultrasonic rectal detection device

Abstract

The invention discloses a flexible bendable rectal ultrasonic detection device which comprises a tube body, an ultrasonic collection device and a medium injection device, a flexible bending part is arranged at the pilot end of the tube body, and a detection camera is arranged at the front end of the flexible bending part; the ultrasonic acquisition device is used for acquiring ultrasonic signals in the rectum; the medium injection device comprises a medium injection channel, an air bag insertion channel, a front partition air bag, a rear partition air bag and an air dredging channel. A partition area can be formed at the lesion position in the rectum through the front partition air bag and the rear partition air bag, the ultrasonic conduction medium is injected through the injection channel, and therefore the ultrasonic imaging effect is improved. And the gas in the partition area can be exhausted through the gas dredging channel, so that the ultrasonic conduction medium does not oppress the lesion part, and the accuracy of ultrasonic imaging is ensured.

Description

Technical Field

[0001] The present application relates to the field of medical equipment, and in particular to a flexible and bendable rectal ultrasound detection device. Background Art

[0002] Endoscopic ultrasound (EUS) is a digestive tract inspection technology that combines endoscopy and ultrasound. A miniature high-frequency ultrasound probe is placed at the top of the endoscope. When the endoscope is inserted into the body cavity, while the endoscope directly observes the digestive tract mucosal lesions, the ultrasound under the endoscope can be used for real-time scanning. The histological characteristics of the hierarchical structure of the gastrointestinal tract and the ultrasound images of the surrounding adjacent organs can be obtained, thereby further improving the diagnostic level of endoscopy and ultrasound. When using an ultrasound endoscope to inspect the digestive system, in order to observe the shape, size, location, texture, depth, etc. of the lesion, it is necessary to first irrigate the lesion with water, so as to obtain a clear image of the lesion site, which is conducive to the discovery of the lesion to avoid missed diagnosis or misdiagnosis. In addition, the injected water can improve the conduction effect of ultrasound and the imaging clarity of the ultrasound probe.

[0003] However, the existing water injection operation mainly adopts direct water injection operation, which has a large amount of water injection, puts a heavy burden on the patient's body, and the water is easy to flow to the distal end of the digestive tract after injection, making it difficult to store water. In addition, some lesions are located in the opposite direction of gravity in the digestive tract, and the injected water cannot cover the lesions, resulting in unclear imaging of the lesions.

[0004] In order to solve these problems, a Chinese patent with publication number CN117653208B and titled "A capsule probe ultrasonic endoscope device" discloses a technical solution of setting an ultrasonic conductive medium capsule (i.e., a transmission part) at the front end of the ultrasonic probe. In this patent, the ultrasonic probe and the camera of the endoscope are set in the conductive medium capsule; during detection, the capsule expands and contacts the lesion, so that ultrasound conduction between the lesion and the ultrasonic probe is carried out through the conductive medium capsule. This technical solution can improve the conductivity of ultrasound and help the clarity of ultrasonic imaging. However, since the surface of the above-mentioned conductive medium capsule has a certain tension (like a water-filled balloon), the conductive medium capsule will squeeze the lesion when it expands and contacts the lesion, causing the lesion to be squeezed and deformed, affecting the detection of parameters such as the shape, size, texture, and lesion boundary of the lesion in ultrasonic imaging. Therefore, it is easy to misdiagnose the nature of the lesion. Summary of the invention

[0005] In view of the above problems, the present application provides a flexible and bendable rectal ultrasound detection device, which is used to solve the technical problem that the conductive medium bag of the above-mentioned ultrasound endoscope compresses the lesion and affects the ultrasound detection results.

[0006] To achieve the above objectives, the present application provides a flexible and bendable rectal ultrasound detection device, comprising:

[0007] A tube body is used to probe into the rectum for detection. The leading end of the tube body is provided with a flexible bending portion, and the flexible bending portion is controlled by an operating handle to bend in different directions. The front end of the flexible bending portion is provided with a detection camera for collecting images of the inside of the rectum;

[0008] An ultrasonic acquisition device, used for acquiring ultrasonic signals in the rectum, comprising an ultrasonic transducer array, which is disposed at the front end of the flexible curved portion and is sequentially arranged along the circumferential direction of the side surface of the front end of the flexible curved portion;

[0009] A medium injection device, used for injecting an ultrasonic conductive medium into a local position in the rectum, comprising: a medium injection channel, an airbag insertion channel, a front partition airbag, a rear partition airbag and a gas drainage channel;

[0010] The medium injection channel, the airbag insertion channel and the air vent channel are all arranged inside the tube body, and all extend axially from the external end of the tube body to the leading end of the tube body; the front partition airbag is used to be inserted along the airbag insertion channel to the front of the ultrasonic transducer array, and the rear partition airbag is arranged on the tube body and located at the rear end of the flexible bending part; the front partition airbag and the rear partition airbag expand and adhere to the inner wall of the rectum after inflation, forming a partition area between the front and rear of the ultrasonic transducer array; the medium injection channel is used to inject ultrasonic conductive medium into the partition area; the air vent channel is connected to the outside, and is used to vent the gas in the partition area to the outside of the body when the ultrasonic conductive medium is injected, so that the ultrasonic conductive medium fills the entire partition area.

[0011] Furthermore, the external end of the medium injection channel is connected to a flushing liquid container and an ultrasonic conductive medium container through a gate solenoid valve; after completing the ultrasonic signal acquisition at the current detection position of the rectum or when the detection camera acquires the internal image of the rectum, the gate solenoid valve selects the flushing liquid container to flush the current detection position;

[0012] The external end of the air vent channel is also connected to a medium recovery pump, and the medium recovery pump is used to suck the air vent channel to recover the ultrasonic conductive medium and flushing liquid in the partition area after completing the ultrasonic signal collection at the current detection position of the rectum.

[0013] Furthermore, the leading end is also provided with a fill light, and the fill light is arranged adjacent to the detection camera.

[0014] Furthermore, the front partition airbag includes a flexible rod body to be inserted along the airbag insertion channel and an inflatable bag body arranged at the front end of the flexible rod body.

[0015] Furthermore, the inflatable bag body and the rear partition airbag are made of medical silicone.

[0016] Furthermore, an L-shaped hose is provided at the front end of the air vent channel, and a float is provided at the inlet end of the L-shaped hose. The float floats on the liquid surface of the ultrasonic conductive medium, so that the inlet end of the L-shaped hose is higher than the liquid surface of the ultrasonic conductive medium.

[0017] Furthermore, a guide wire is connected to the inner side of the flexible bending portion, and the guide wire is connected to the curved operating rod on the operating handle.

[0018] Furthermore, the front partition airbag and the rear partition airbag are both connected to an inflation pipe.

[0019] Furthermore, the ultrasonic transducer array includes a plurality of ultrasonic transducer array elements, wherein a piezoelectric layer and a matching layer are arranged in the ultrasonic transducer array element; the piezoelectric layer and the matching layer are stacked, and the material of the piezoelectric layer includes at least one of piezoelectric ceramics, piezoelectric single crystals, and piezoelectric composite materials;

[0020] The ultrasonic signal obtained by the acoustic transducer array is transmitted to the ultrasonic host through the Ramo connector.

[0021] Different from the prior art, the flexible and bendable rectal ultrasound detection device of the above technical solution has the following technical effects:

[0022] 1. A flexible bending portion is provided, and a detection camera and an ultrasonic transducer array are provided at the front end of the flexible bending portion, so that the detection camera and the direction of the ultrasonic detection can be controlled;

[0023] Second, a medium injection device is provided, and a partition area for injecting the ultrasonic conductive medium can be formed only in the lesion area in the rectum through the front partition airbag and the rear partition airbag, and the ultrasonic conductive medium will not overflow outside the partition area, thus saving the amount of the ultrasonic conductive medium;

[0024] 3. The medium injection device includes a gas vent channel. When the ultrasonic conductive medium is injected, the gas vent channel can discharge the gas in the partition area to stabilize the pressure in the partition area and avoid the pressure increase from compressing the lesion. In addition, the gas in the partition area can be discharged through the gas vent channel, so that the ultrasonic conductive medium can fill the entire partition area, thereby improving the accuracy of ultrasonic detection.

[0025] The above-mentioned records related to the invention content are only an overview of the technical solution of the present application. In order to enable ordinary technicians in the field to more clearly understand the technical solution of the present application, and then implement it according to the text of the specification and the contents recorded in the drawings, and to make the above-mentioned purpose and other purposes, features and advantages of the present application easier to understand, the following is an explanation in combination with the specific implementation mode and drawings of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings are only used to illustrate the principles, implementation methods, applications, characteristics and effects of the specific embodiments of the present invention and other related contents, and shall not be considered as limiting the present application.

[0027] In the drawings of the specification:

[0028] Figure 1 It is a schematic structural diagram of the flexible and bendable rectal ultrasound detection device when the front partition airbag is not inserted in the specific implementation mode;

[0029] Figure 2 It is a schematic diagram of the structure of the flexible and bendable rectal ultrasound detection device after being inflated according to the specific implementation method;

[0030] Figure 3 It is a schematic diagram of the flexible and bendable rectal ultrasound detection device described in the specific embodiment after an ultrasound conductive medium is injected into the lesion in the rectum;

[0031] The reference numerals in the above drawings are described as follows:

[0032] 11. Tube body; 12. Ultrasonic transducer array; 13. Detection camera; 14. Medium injection channel; 15. Air release channel; 16. Flexible bending part; 17. Airbag insertion channel; 18. Rear partition airbag; 19. Front partition airbag; 191. Inflatable bag body; 192. Flexible rod body; 151. L-shaped hose; 152. Float; 131. Fill light; 20. Rectum; 21. Lesion; 22. Partition area; DETAILED DESCRIPTION

[0033] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0034] Reference to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The term "embodiment" appearing in various places in the specification does not necessarily refer to the same embodiment, nor does it particularly limit its independence or association with other embodiments. In principle, in the present application, as long as there is no technical contradiction or conflict, the various technical features mentioned in the embodiments can be combined in any way to form a corresponding implementable technical solution.

[0035] Unless otherwise defined, the technical terms used in this document have the same meanings as those generally understood by those skilled in the art to which this application belongs; the use of relevant terms in this document is only for describing specific embodiments and is not intended to limit this application.

[0036] In the description of this application, the term "and / or" is an expression used to describe the logical relationship between objects, indicating that three relationships may exist, for example, A and / or B, which means: A exists, B exists, and A and B exist at the same time. In addition, the character " / " in this article generally indicates that the objects before and after are in an "or" logical relationship.

[0037] In the present application, terms such as “first” and “second” are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship of quantity, priority or sequence between these entities or operations.

[0038] Without further limitations, in this application, the words "include", "comprises", "has" or other similar open-ended expressions used in sentences are intended to cover non-exclusive inclusion. These expressions do not exclude the presence of additional elements in the process, method or product including the elements, so that the process, method or product including a series of elements may include not only those limited elements, but also other elements not explicitly listed, or also include elements inherent to such process, method or product.

[0039] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than", "less than", "exceed" and the like are understood to exclude the number itself; expressions such as "above", "below", "within" and the like are understood to include the number itself. In addition, in the description of the embodiments of this application, "multiple" means more than two (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups", "multiple times", etc., unless otherwise clearly and specifically limited.

[0040] In the description of the embodiments of the present application, space-related expressions used, such as "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "vertical", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or position relationship based on the orientation or position relationship shown in the specific embodiments or drawings, and are only for the convenience of describing the specific embodiments of the present application or facilitating the reader's understanding, and do not indicate or imply that the referred device or component must have a specific position, a specific orientation, or be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0041] Unless otherwise expressly specified or limited, in the description of the embodiments of the present application, the terms such as "install", "connect", "connect", "fix", "set", etc. used should be understood in a broad sense. For example, the "connection" can be a fixed connection, a detachable connection, or an integrated setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For technicians in the technical field to which the present application belongs, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0042] See also Figures 1 to 3 This embodiment provides a flexible and bendable rectal ultrasound detection device. The flexible and bendable rectal ultrasound detection device can be used for rectal detection of the human body. During the detection, the detection camera can be used to directly observe the digestive tract mucosal lesions, and the ultrasound acquisition device can be used to scan, so as to obtain the histological characteristics of the hierarchical structure of the rectum and the ultrasound images of the surrounding adjacent organs, thereby further improving the diagnosis level of the rectum.

[0043] like Figure 1 , Figure 2 and Figure 3 As shown, the flexible and bendable rectal ultrasound detection device includes: a tube body 11, an ultrasound collection device and a medium injection device. Among them, the structure and function of the tube body 11 are similar to those of the tube body 11 of the existing endoscope, and both are used to probe into the rectum 20 for detection. Among them, the tube body 11 has a certain length and a certain flexibility, so it is convenient to insert into the rectum 20 and pass through the rectum for detection. The end of the tube body 11 inserted into the rectum 20 is the leading end, and the end of the tube body 11 remaining outside the body is the external end. A flexible bending portion 16 is provided at the leading end of the tube body 11 (i.e., the end inserted into the rectum), and the flexible bending portion 16 is controlled by the operating handle to bend in different directions. The front end of the flexible bending portion 16 is provided with a detection camera 13 for collecting images of the inside of the rectum 20. A guide wire is connected to the inner side of the flexible bending portion 16 (i.e., the inside of the tube body 11), and the guide wire is connected to the bending joystick on the operating handle. By turning the joystick, the flexible bending portion 16 can be controlled to bend in different directions, so that the detection camera 13 and the ultrasonic transducer array 12 arranged at the front end of the flexible bending portion 16 can be directed in different directions to collect images and ultrasonic signals in the rectum 20. The connection between the guide wire and the flexible bending portion 16 and how to control the flexible bending portion 16 to bend in different directions are the same as the structure and principle of the endoscope in the prior art, and will not be repeated here.

[0044] Since the light in the rectum 20 is weak, the detection camera 13 cannot obtain sufficient light source, and the image quality is not high. Therefore, in this embodiment, a fill light 131 is also provided at the leading end, and the fill light 131 is arranged adjacent to the detection camera 13. The fill light 131 can increase the light intensity in the detection area and improve the image quality of the detection camera 13. In order to avoid heating of the fill light 131, the fill light 131 uses an LED cold light source.

[0045] like Figure 1 and Figure 2 As shown, the ultrasonic acquisition device is used to collect ultrasonic signals in the rectum 20. The ultrasonic acquisition device scans the rectum 20 to obtain the histological characteristics of the hierarchical structure of the rectum 20 and the ultrasonic images of the surrounding adjacent organs. The ultrasonic acquisition device includes an ultrasonic transducer array 12, which is arranged at the front end of the flexible bending portion 16 and arranged in sequence along the side circumference of the front end of the flexible bending portion 16. The ultrasonic transducer array 12 includes a plurality of transducer array elements, each of which is equivalent to an ultrasonic probe, and each transducer array element is arranged at equal intervals along the outer periphery of the front end of the flexible bending portion 16.

[0046] A piezoelectric layer and a matching layer are arranged in the ultrasonic transducer array element; the piezoelectric layer and the matching layer are stacked, and the material of the piezoelectric layer includes at least one of piezoelectric ceramics, piezoelectric single crystals, and piezoelectric composite materials; the ultrasonic signal obtained by the acoustic transducer array is transmitted to an external host through a Ramo connector.

[0047] Among them, the piezoelectric layer can be used to transmit and receive sound waves, and the matching layer can achieve the matching and transition of acoustic impedance, increase the transmittance between the piezoelectric layer and the object to be measured, and improve the efficiency of sound propagation. Among them, the piezoelectric layer and the matching layer can use the specific structure and connection method of the piezoelectric layer and the matching layer in the Chinese patent with the announcement number CN117426797B and the name "Dual-frequency ultrasonic transducer and ultrasonic endoscopic probe". Each transducer array element has the function of transmitting and receiving sound waves. When scanning the internal structure of the rectum, each transducer array element is responsible for emitting ultrasonic waves and receiving ultrasonic signals reflected or scattered back. The transducer array element receives the reflected ultrasonic signals and converts them into electrical signals. These electrical signals are transmitted to the external host, and the external host is then filtered, amplified, and processed by the signal processor to form ultrasonic image information; the image display converts the processed ultrasonic image information into an image and displays it in a visual form.

[0048] like Figure 1 , Figure 2 and Figure 3As shown, in this embodiment, the medium injection device is used to inject an ultrasonic conductive medium into a local position (i.e., the partition area mentioned below) in the rectum 20 to improve the clarity of ultrasonic detection. The position can be selected by the operator according to the needs during detection. For example, when a lesion or suspected lesion is found, or when the clarity of ultrasonic imaging is insufficient, the ultrasonic conductive medium can be injected into these local positions. The medium injection device includes: a medium injection channel 14, an airbag insertion channel 17, a front partition airbag 19, a rear partition airbag 18, and a gas drainage channel 15.

[0049] The medium injection channel 14, the airbag insertion channel 17 and the air vent channel 15 are all arranged inside the tube body 11, and all extend axially from the external end of the tube body 11 to the leading end of the tube body 11. The front partition airbag 19 is used to be inserted into the front of the ultrasonic transducer array 12 along the airbag insertion channel 17, and the rear partition airbag 18 is arranged on the tube body 11 and is located at the rear end of the flexible bending part 16. After being inflated, the front partition airbag 19 and the rear partition airbag 18 expand and adhere to the inner wall of the rectum 20, forming a partition area 22 between the front and rear of the ultrasonic transducer array 12. Figure 2 and Figure 3 As shown, the front partition airbag 19 includes a flexible rod 192 and an inflatable sac 191 disposed at the front end of the flexible rod 192, and the front partition airbag 19 is movable relative to the tube body 11. The front partition airbag 19 and the rear partition airbag 18 are both inflatable and connected to an inflatable pipe. When it is necessary to inject an ultrasonic conductive medium, the front partition airbag 19 can be pushed forward to extend from the front end of the airbag insertion channel 17, and then the inflatable sac 191 of the front partition airbag 19 and the rear partition airbag 18 can be inflated.

[0050] After being inflated, the inflatable sac 191 of the front partition sac 19 and the rear partition sac 18 are both in close contact with the inner wall of the rectum 20, thereby forming a partition area 22. The partition area 22 refers to a relatively closed area formed by the front partition sac 19 and the rear partition sac 18 and the inner wall of the rectum 20, and the injected ultrasonic conductive medium will not or rarely overflow outside the front partition sac 19 and the rear partition sac 18. In this embodiment, the inflatable sac 191 and the rear partition sac 18 are preferably made of medical silicone. In other embodiments, the inflatable sac 191 and the rear partition sac 18 can also be made of similar flexible materials.

[0051] In this embodiment, the front partition airbag 19 is located in front of the lesion 21, and the rear partition airbag 18 is located behind the lesion 21. The front partition airbag 19 and the rear partition airbag 18 do not contact the lesion 21, nor will they squeeze the lesion 21. The medium injection channel 14 is used to inject the ultrasonic conductive medium into the partition area 22; the gas drainage channel 15 is connected to the outside and is used to drain the gas in the partition area 22 to the outside when the ultrasonic conductive medium is injected, so that the ultrasonic conductive medium fills the entire partition area 22.

[0052] The ultrasonic conductive medium can be a commonly used ultrasonic coupling agent for improving the conductivity of ultrasound. The ultrasonic conductive medium can be composed of components such as gel, carbomer, glycerin, purified water, etc. The acoustic impedance of the ultrasonic conductive medium is similar to that of human soft tissue and is widely used in clinical operations. The characteristics of the ultrasonic conductive medium are neutral pH value, non-toxic, tasteless, non-irritating, and non-greasy.

[0053] The operating handle is connected to the flexible bending part 16 of the tube body 11 through a metal guide wire, so as to control the flexible bending part 16 to bend in different directions. In addition, the operating handle can also be provided with a photo control button of the detection camera 13 and a control button of the ultrasonic acquisition device. The external end of the tube body 11 is connected to the external host and the operating handle through a cable, and an ultrasonic imaging unit and a video imaging unit are provided in the external host. The ultrasonic imaging unit is used to receive the ultrasonic signal of the ultrasonic transducer array 12 and generate an ultrasonic image; the video imaging unit is used to receive the image information collected by the detection camera 13 and generate a video image.

[0054] When the flexible rectal ultrasound detection device is used to inspect the rectum 20, the front partition airbag 19 and the rear partition airbag 18 do not need to be inflated, that is, the partition area 22 does not need to be formed, and the ultrasound conductive medium does not need to be injected. The image of the inner wall of the rectum 20 is only collected by the detection camera 13. Only when the inner wall of the rectum 20 is detected to have protrusions, polyps, and other lesions, the front partition airbag 19 needs to be inserted and the front partition airbag 19 and the rear partition airbag 18 need to be inflated to form the partition area 22. Figure 3As shown, the lesion 21 is located in the partition area 22, and then the ultrasonic conductive medium is injected into the partition area 22 through the medium injection channel 14, and the gas in the partition area 22 is discharged from the body through the air discharge channel 15, so that the partition area 22 is tested to be full of the ultrasonic conductive medium, and the pressure in the partition area 22 is guaranteed to be stable when the ultrasonic conductive medium is injected, and the ultrasonic conductive medium will not compress the lesion 21, so that the lesion 21 maintains the shape in the natural state. When the ultrasonic conductive medium fills the partition area 22, the ultrasonic transducer array 12 can be turned on to collect the ultrasonic signal in the rectum 20. The ultrasonic signal is transmitted to the external host outside the body through the transmission line, and the ultrasonic imaging unit in the external host analyzes and processes the ultrasonic signal to obtain the ultrasonic image in the rectum 20. Among them, the ultrasonic imaging unit and how to obtain the ultrasonic image according to the ultrasonic signal are conventional technical means in this field, and will not be repeated here.

[0055] In the above embodiment, the flexible and bendable rectal ultrasound detection device is provided with a flexible bending portion 16, and the detection camera 13 and the ultrasonic transducer array 12 are arranged at the front end of the flexible bending portion 16, so that the detection camera 13 and the direction of the ultrasonic detection can be controlled. In addition, when the flexible and bendable rectal ultrasound detection device is used to inspect the rectum 20, it is not necessary to first irrigate the rectum 20. The front partition airbag 19 and the rear partition airbag 18 can form a partition area 22 only in the lesion area in the rectum 20, and inject an ultrasonic conductive medium into the partition area 22 to improve the ultrasonic conductivity, and the ultrasonic conductive medium will not overflow outside the partition area 22. Therefore, on the one hand, the amount of ultrasonic conductive medium can be saved, and on the other hand, it can be easier to make the ultrasonic conductive medium fill the space between the lesion 21 and the ultrasonic transducer array element.

[0056] In the above embodiment, the medium injection device includes a gas escape channel 15. When the ultrasonic conductive medium is injected, the gas escape channel 15 can discharge the gas in the partition area 22 to stabilize the pressure in the partition area 22 and avoid the pressure increase from compressing the lesion 21. Moreover, by discharging the gas in the partition area 22 through the gas escape channel 15, the ultrasonic conductive medium can fill the entire partition area 22, thereby improving the accuracy of ultrasonic detection.

[0057] In one embodiment, the medium injection channel 14 in the above embodiment can be used not only for injecting ultrasonic conductive medium into the partition area 22, but also for cleaning the inside of the rectum 20. Specifically, the external end of the medium injection channel 14 is connected to a flushing liquid container and an ultrasonic conductive medium container through a gate solenoid valve; after the ultrasonic signal acquisition is completed at the current detection position of the rectum 20 or when the detection camera 13 acquires the internal image of the rectum 20, the gate solenoid valve gates the flushing liquid container to flush the current detection position. The external end of the air vent channel 15 is also connected to a medium recovery pump, which is used to suck the air vent channel 15 to recover the ultrasonic conductive medium and flushing liquid in the partition area 22 after the ultrasonic signal acquisition is completed at the current detection position of the rectum 20.

[0058] The selection solenoid valve includes at least two flow inlets and one flow outlet, the two flow inlets are respectively connected to the flushing liquid container and the ultrasonic conduction medium container, and the flow outlet is connected to the medium injection channel 14. The selection solenoid valve can control any one of the flushing liquid container and the ultrasonic conduction medium container to be connected to the medium injection channel 14.

[0059] When only the detection camera 13 is used to collect the internal image of the rectum 20, the flushing liquid container can be connected to the medium injection channel 14 by selecting the solenoid valve; therefore, when the inside of the rectum 20 needs to be flushed during inspection (for example, when there is food residue remaining on the inner wall of the rectum 20), flushing liquid can be injected through the flushing liquid container and the medium injection channel 14 for flushing, wherein the flushing liquid can be physiological saline.

[0060] When ultrasonic testing is required, the solenoid valve can be turned on to connect the acoustic conductive medium container to the medium injection channel 14, thereby injecting the ultrasonic conductive medium into the partition area 22. After the ultrasonic testing is completed, the acoustic conductive medium container can be connected to the flushing liquid container for flushing.

[0061] like Figure 3 As shown, in one embodiment, in order to prevent the air vent channel 15 from venting the gas in the partition area 22 to the outside of the body while also sucking out the ultrasonic conductive medium, the front end of the air vent channel 15 is improved. Specifically, the front end of the air vent channel 15 is provided with an L-shaped hose 151, and the inlet end of the L-shaped hose 151 is provided with a float 152, and the float 152 floats on the liquid surface of the ultrasonic conductive medium, so that the inlet end of the L-shaped hose 151 is higher than the liquid surface of the ultrasonic conductive medium.

[0062] The L-shaped hose 151 can be made of a flexible bellows. In the natural state, the L-shaped hose 151 sags due to its own weight, so it will not affect the detection camera 13 to take pictures. When the ultrasonic conductive medium is injected, the float 152 floats on the surface of the ultrasonic conductive medium, so that the inlet end of the L-shaped hose 151 is higher than the surface of the ultrasonic conductive medium. Therefore, the L-shaped hose 151 will only discharge the air in the partition area 22 instead of sucking in the ultrasonic conductive medium. Through the L-shaped hose 151 and the float 152 in this embodiment, the air in the partition area 22 can be completely exhausted.

[0063] Finally, it should be noted that although the above embodiments have been described in the specification and drawings of this application, this does not limit the scope of patent protection of this application. All technical solutions generated by replacing or modifying equivalent structures or equivalent processes based on the essential concept of this application using the contents recorded in the specification and drawings of this application, as well as directly or indirectly implementing the technical solutions of the above embodiments in other related technical fields, are included in the scope of patent protection of this application.

Claims

1. A flexible and bendable rectal ultrasound detection device, characterized in that: include: A tube body is used to probe into the rectum for detection. The leading end of the tube body is provided with a flexible bending portion, and the flexible bending portion is controlled by an operating handle to bend in different directions. The front end of the flexible bending portion is provided with a detection camera for collecting images of the inside of the rectum; An ultrasonic acquisition device, used for acquiring ultrasonic signals in the rectum, comprising an ultrasonic transducer array, which is disposed at the front end of the flexible curved portion and is sequentially arranged along the circumferential direction of the side surface of the front end of the flexible curved portion; A medium injection device, used for injecting an ultrasonic conductive medium into a local position in the rectum, comprising: a medium injection channel, an airbag insertion channel, a front partition airbag, a rear partition airbag and a gas drainage channel; The medium injection channel, the airbag insertion channel and the air vent channel are all arranged inside the tube body, and all extend axially from the external end of the tube body to the leading end of the tube body; the front partition airbag is used to be inserted along the airbag insertion channel to the front of the ultrasonic transducer array, and the rear partition airbag is arranged on the tube body and located at the rear end of the flexible bending part; the front partition airbag and the rear partition airbag expand and adhere to the inner wall of the rectum after inflation, forming a partition area between the front and rear of the ultrasonic transducer array; the medium injection channel is used to inject ultrasonic conductive medium into the partition area; the air vent channel is connected to the outside, and is used to vent the gas in the partition area to the outside of the body when the ultrasonic conductive medium is injected, so that the ultrasonic conductive medium fills the entire partition area.

2. The flexible and bendable rectal ultrasound detection device according to claim 1, characterized in that: The external end of the medium injection channel is connected to a flushing liquid container and an ultrasonic conductive medium container through a gate solenoid valve; after completing the ultrasonic signal acquisition at the current detection position of the rectum or when the detection camera acquires the internal image of the rectum, the gate solenoid valve selects the flushing liquid container to flush the current detection position; The external end of the air vent channel is also connected to a medium recovery pump, and the medium recovery pump is used to suck the air vent channel to recover the ultrasonic conductive medium and flushing liquid in the partition area after completing the ultrasonic signal collection at the current detection position of the rectum.

3. The flexible and bendable rectal ultrasound detection device according to claim 1 or 2, characterized in that: The leading end is also provided with a fill light, and the fill light is arranged adjacent to the detection camera.

4. The flexible and bendable rectal ultrasound detection device according to claim 1, characterized in that: The front partition airbag comprises a flexible rod body to be inserted along the airbag insertion channel and an inflatable bag body arranged at the front end of the flexible rod body.

5. The flexible and bendable rectal ultrasound detection device according to claim 4, characterized in that: The inflatable bag body and the rear partition air bag are made of medical silica gel.

6. The flexible and bendable rectal ultrasound detection device according to claim 1, characterized in that: An L-shaped hose is arranged at the front end of the air vent channel, and a float is arranged at the inlet end of the L-shaped hose. The float floats on the liquid surface of the ultrasonic conductive medium, so that the inlet end of the L-shaped hose is higher than the liquid surface of the ultrasonic conductive medium.

7. The flexible and bendable rectal ultrasound detection device according to claim 1, characterized in that: A guide wire is connected to the inner side of the flexible bending part, and the guide wire is connected to the curved operating rod on the operating handle.

8. The flexible and bendable rectal ultrasound detection device according to claim 1, characterized in that: The front partition airbag and the rear partition airbag are both connected with an inflation pipe.

9. The flexible and bendable rectal ultrasound detection device according to claim 1, characterized in that: The ultrasonic transducer array comprises a plurality of ultrasonic transducer array elements, wherein a piezoelectric layer and a matching layer are arranged in the ultrasonic transducer array element; the piezoelectric layer and the matching layer are stacked, and the material of the piezoelectric layer comprises at least one of piezoelectric ceramics, piezoelectric single crystals, and piezoelectric composite materials; The ultrasonic signal obtained by the acoustic transducer array is transmitted to the ultrasonic host through the Ramo connector.

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