Intracavity ultrasonic probe and ultrasonic imaging equipment

Abstract

The utility model discloses an intracavity ultrasonic probe and ultrasonic imaging equipment, the intracavity ultrasonic probe comprises a shell assembly, a driving assembly, a transmission assembly and a sound head assembly with a rotating shaft, and the driving assembly is in transmission connection with the rotating shaft through the transmission assembly to drive the rotating shaft to drive the sound head assembly to rotate around the central axis of the rotating shaft; the transmission assembly comprises a first magnetic part and a second magnetic part, the first magnetic part is fixedly arranged at the power output end of the driving assembly, and the second magnetic part is fixedly arranged on the rotating shaft; the first magnetic part is in non-contact magnetic fit with the second magnetic part, so that when the driving assembly drives the first magnetic part to rotate, the second magnetic part can drive the rotating shaft to rotate along with the rotation of the first magnetic part. Through the non-contact magnetic matching relation formed between the first magnetic piece and the second magnetic piece, non-contact transmission between the driving assembly and the sound head assembly can be achieved, the installation precision of related parts can be reduced, the transmission stability can be improved, abrasion of the related parts can be reduced, and noise can be lowered.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, and particularly relates to an intracavitary ultrasound probe and an ultrasonic imaging device. Background Art

[0002] An intracavitary ultrasound probe is an ultrasound probe that can be inserted into the cavity of human tissues or organs, and it can realize ultrasound detection through the anus, vagina, esophagus, etc.; during the detection process, a driving component (such as a motor) built in the probe drives a sound head component to rotate (such as a 360-degree rotation), and uses the sound head component to emit ultrasonic signals to the target tissue and receive corresponding ultrasonic echo signals, so as to obtain image data of the target tissue. In the related art, a contact transmission structure such as gear transmission, synchronous belt transmission, or wire rope transmission is generally adopted between the driving component and the sound head component. This not only puts forward high requirements for the installation accuracy of related components inside the probe, but also wear will occur between related components after the probe works for a long time, resulting in problems such as unstable transmission and noise. Content of the Utility Model

[0003] The main technical problem to be solved by the utility model is to provide an intracavitary ultrasound probe adopting a non-contact transmission form and an ultrasonic imaging device applying the probe.

[0004] According to a first aspect, in one embodiment, an intracavitary ultrasound probe is provided, which includes a housing assembly, a driving component, a transmission component, and a sound head component having a rotating shaft. The sound head component is rotatably installed in the housing assembly through the rotating shaft; the driving component is installed in the housing assembly and is drivingly connected to the rotating shaft through the transmission component; the driving component is used to drive the rotating shaft to rotate so as to drive the sound head component to rotate around the central axis of the rotating shaft.

[0005] Wherein, the transmission component includes a first magnetic part and a second magnetic part. The first magnetic part is fixedly arranged at the power output end of the driving component, and the second magnetic part is fixedly arranged on the rotating shaft; the first magnetic part and the second magnetic part are in non-contact magnetic cooperation, so that when the driving component drives the first magnetic part to rotate, the second magnetic part can drive the rotating shaft to rotate along with the rotation of the first magnetic part.

[0006] In one embodiment, the rotation axis of the second magnetic part is collinear with the central axis, and the rotation axis of the first magnetic part is parallel to the rotation axis of the second magnetic part; in the radial direction perpendicular to the central axis, there is a first preset distance between the first magnetic part and the second magnetic part.

[0007] In one embodiment, the rotation axes of the first magnetic member, the second magnetic member, and the central axis are collinear; in the direction of the central axis, a second preset distance is provided between the first magnetic member and the second magnetic member.

[0008] In one embodiment, the rotation axes of the first magnetic member, the second magnetic member, and the central axis are collinear, and one of the second magnetic member and the first magnetic member is arranged around the outside of the other; in the circumferential direction formed in the radial direction around the central axis, a third preset distance is provided between the first magnetic member and the second magnetic member.

[0009] In one embodiment, the rotation axis of the second magnetic member is collinear with the central axis, and the rotation axis of the first magnetic member intersects the rotation axis of the second magnetic member; in the radial direction perpendicular to the central axis or in the direction of the central axis, a fourth preset distance is provided between the first magnetic member and the second magnetic member.

[0010] In one embodiment, the first magnetic member includes a plurality of first permanent magnets, and the plurality of first permanent magnets are arranged around the rotation axis of the first magnetic member, and the magnetic polarities of the acting surfaces of two adjacent first permanent magnets are opposite; the second magnetic member includes a plurality of second permanent magnets, and the plurality of second permanent magnets are arranged around the rotation axis of the second magnetic member, and the magnetic polarities of the acting surfaces of two adjacent second permanent magnets are opposite;

[0011] Wherein, the acting surface of the first permanent magnet is the surface of the first permanent magnet that magnetically cooperates with the second permanent magnet, and the acting surface of the second permanent magnet is the surface of the second permanent magnet that magnetically cooperates with the first permanent magnet.

[0012] In one embodiment, the plurality of first permanent magnets are paired in pairs to form a first permanent magnet group, and the plurality of second permanent magnets are paired in pairs to form a second permanent magnet group, and the number of the first permanent magnet groups is less than the number of the second permanent magnet groups.

[0013] In one embodiment, the first magnetic member further includes a first carrier disk, the geometric center line of the first carrier disk is the rotation axis of the first magnetic member, the first carrier disk is fixed to the power output end of the drive assembly, and the first permanent magnet is fixed to the first carrier disk;

[0014] And / or the second magnetic member further includes a second carrier disk, the geometric center line of the second carrier disk is the rotation axis of the second magnetic member, the second carrier disk is fixed to the rotating shaft, and the second permanent magnet is fixed to the second carrier disk.

[0015] In one embodiment, the driving assembly includes a driving motor, and the first carrier is sleeved and fixed on the output shaft of the driving motor.

[0016] In one embodiment, the first magnetic member includes an integrally formed first permanent magnet ring, and the geometric center line of the first permanent magnet ring is the rotation axis of the first magnetic member; the second magnetic member includes an integrally formed second permanent magnet ring, and the geometric center line of the second permanent magnet ring is the rotation axis of the second magnetic member.

[0017] In one embodiment, a first positioning structure is provided between the first magnetic member and the power output end of the driving assembly, and the first positioning structure is used to detachably fix the first magnetic member to the power output end of the driving assembly;

[0018] and / or a second positioning structure is provided between the rotating shaft and the second magnetic member, and the second positioning structure is used to detachably fix the second magnetic member to the rotating shaft.

[0019] In one embodiment, the driving assembly is configured to drive the rotating shaft to drive the phased array transducer assembly to rotate within a stroke angle of not less than 360 degrees through the transmission assembly.

[0020] In one embodiment, the housing assembly includes:

[0021] An insertion housing for inserting into human tissue during ultrasonic imaging;

[0022] A handle housing for controlling the insertion of the insertion housing and the rotation of the phased array transducer assembly when the insertion housing is inserted into human tissue; and

[0023] A connection base is disposed between the insertion housing and the handle housing. The rotating shaft rotatably penetrates through the connection base. The phased array transducer assembly is disposed in a phased array transducer chamber surrounded by the insertion housing and the connection base. The driving assembly and the transmission assembly are disposed in a driving chamber surrounded by the handle housing and the connection base.

[0024] According to a second aspect, an ultrasonic imaging device is provided in one embodiment, including:

[0025] The intracavitary ultrasonic probe according to the first aspect, which is configured to emit ultrasonic waves to a target tissue and receive corresponding echo signals;

[0026] An ultrasonic host, connected to the intracavitary ultrasonic probe, and the ultrasonic host is configured to process the echo signals to generate ultrasonic images; and

[0027] A display device, connected to the ultrasonic host, and the display device is configured to display the ultrasonic images.

[0028] The intravascular ultrasound probe according to the above embodiment includes a housing assembly, a driving assembly, a transmission assembly, and a sound head assembly having a rotating shaft. The driving assembly is drivingly connected to the rotating shaft through the transmission assembly to drive the rotating shaft to drive the sound head assembly to rotate around the central axis of the rotating shaft. The transmission assembly includes a first magnetic member and a second magnetic member. The first magnetic member is fixedly arranged at the power output end of the driving assembly, and the second magnetic member is fixedly arranged on the rotating shaft. The first magnetic member is in non-contact magnetic cooperation with the second magnetic member, so that when the driving assembly drives the first magnetic member to rotate, the second magnetic member can drive the rotating shaft to rotate along with the rotation of the first magnetic member. By using the non-contact magnetic cooperation relationship formed between the first magnetic member and the second magnetic member, non-contact transmission between the driving assembly and the sound head assembly can be realized, which can not only reduce the installation accuracy of related components, improve the smoothness of transmission, but also reduce the wear of related components and reduce noise. Description of the Drawings

[0029] Figure 1 It is a schematic structural reference diagram of an ultrasonic imaging device according to an embodiment.

[0030] Figure 2 It is a schematic diagram of the outer contour structure of an intravascular ultrasound probe according to an embodiment.

[0031] Figure 3 It is an exploded schematic diagram of the structure of an intravascular ultrasound probe according to an embodiment.

[0032] Figure 4 It is a schematic diagram of the transmission structural relationship between the driving assembly and the sound head assembly in an intravascular ultrasound probe according to an embodiment.

[0033] Figure 5 It is a schematic diagram for comparing the structures of the first magnetic member and the second magnetic member in an intravascular ultrasound probe according to an embodiment.

[0034] Figure 6 It is a simplified diagram (one) of the transmission structure and principle of an intravascular ultrasound probe according to an embodiment.

[0035] Figure 7 It is a simplified diagram (two) of the transmission structure and principle of an intravascular ultrasound probe according to an embodiment.

[0036] Figure 8 It is a simplified diagram (three) of the transmission structure and principle of an intravascular ultrasound probe according to an embodiment.

[0037] Figure 9 It is a simplified diagram (four) of the transmission structure and principle of an intravascular ultrasound probe according to an embodiment.

[0038] In the figure:

[0039] 10. Housing assembly; 11. Connection base; 12. Insertion housing; 13. Handle housing; 20. Driving assembly; 21. Driving motor; 22. First positioning structure; 30. Transmission assembly; 31. First magnetic member; 31a. First permanent magnet; 31b. First carrier plate; 32. Second magnetic member; 32a. Second permanent magnet; 32b. Second carrier plate; 40. Sound head assembly; 41. Rotating shaft; 42. Array element structure; 43. Second positioning structure; L1. First axis; L2. Second axis;

[0040] 100. Ultrasound host; 200. Display device; 300. Intracavitary ultrasound probe; 400. Cable. Detailed implementation manners

[0041] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific implementation manners. Similar elements in different implementation manners are labeled with related similar element numbers. In the following implementation manners, many details are described to enable a better understanding of the present application. However, those skilled in the art can easily recognize that some of the features can be omitted in different situations, or can be replaced by other elements, materials, and methods. In some cases, some operations related to the present application are not shown or described in the specification, which is to avoid the core part of the present application being overwhelmed by excessive description. For those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0042] In addition, the features, operations, or characteristics described in the specification can be combined in any appropriate manner to form various implementation manners. At the same time, the steps or actions in the method description can also be reordered or adjusted in an obvious manner by those skilled in the art. Therefore, the various sequences in the specification and drawings are only for clearly describing a certain embodiment and do not mean a necessary sequence unless it is stated that a certain sequence must be followed.

[0043] The serial numbers assigned to the components in this article, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meanings. The "connection" and "coupling" mentioned in this application, unless otherwise specified, both include direct and indirect connection (coupling).

[0044] Please refer to Figure 1 , an embodiment of the present application provides an ultrasonic imaging device that can use ultrasonic signals to perform ultrasonic detection on human tissues or biological tissues and generate ultrasonic images to assist doctors in medical diagnosis and treatment; the ultrasonic imaging device includes an ultrasound host 100, a display device 200, and an intracavitary ultrasound probe 300.

[0045] Among them, the intracavitary ultrasound probe 300 is used to be inserted into the cavity of a human or biological organ to emit ultrasonic signals to the target tissue and receive corresponding echo signals; the ultrasound main unit 100 is connected to the intracavitary ultrasound probe 300, mainly for processing the echo signals to generate ultrasound images; the display device 200 is connected to the ultrasound main unit 100, mainly for displaying the ultrasound images for doctors to perform medical diagnoses. The intracavitary ultrasound probe 300 can be a rotational ultrasound probe with an angle greater than or equal to or less than 360°, or it can be an intracavitary volume probe, such as an intracavitary 3D or 4D ultrasound probe.

[0046] Exemplarily, please refer to Figure 1 , this ultrasonic imaging device is a desktop ultrasonic device. The display device 200 is arranged at the upper end of the ultrasound main unit 100. The ultrasound main unit 100 is provided with a socket. The intracavitary ultrasound probe 300 is connected with a cable 400. One end of the cable 400 away from the intracavitary ultrasound probe 300 is provided with a plug, and the plug can be plugged into the socket of the ultrasound main unit 100, so as to realize the signal connection between the intracavitary ultrasound probe 300 and the ultrasound main unit 100. Of course, in some embodiments, this ultrasonic imaging device can also be a portable ultrasonic device in which the ultrasound main unit 100 and the display device 200 are integrally arranged.

[0047] The following mainly introduces the intracavitary ultrasound probe 300. Other components of the ultrasonic imaging device can refer to the prior art and will not be described in detail here. Please refer to Figures 2 to 9 , this intracavitary ultrasound probe 300 includes a housing assembly 10, a driving assembly 20, a transmission assembly 30, a transducer head assembly 40, and other functional components as required.

[0048] Please refer to Figures 2 to 4 , the transducer head assembly 40 has a rotating shaft 41, and an array structure 42 for converting ultrasonic signals and electrical signals with each other is fixedly arranged on the rotating shaft 41; the transducer head assembly 40 is rotatably installed inside the housing assembly 10 through the rotating shaft 41; the driving assembly 20 is arranged inside the housing assembly 10, and the power output end of the driving assembly 20 is in transmission connection with the rotating shaft 41 through the transmission assembly 30.

[0049] By the cooperation of the driving assembly 20 and the transmission assembly 30, the rotating shaft 41 can be driven to rotate, so as to drive the transducer head assembly 40 (specifically, the array structure 42) to rotate around the central axis of the rotating shaft 41 by using the rotating shaft 41, so as to emit ultrasonic signals and receive ultrasonic echo signals through the array structure 42, and finally obtain the ultrasonic image information of the target tissue.

[0050] Exemplarily, the rotating shaft 41 drives the acoustic head assembly 40 to rotate within a stroke angle of not less than 360 degrees (for example, the angle of rotation of the acoustic head assembly 40 in a single direction can be not less than 180 degrees), so that the intracavitary ultrasonic probe 300 can perform a 360-degree scan to cooperate with the ultrasonic host 100 to achieve 360-degree imaging of the target tissue.

[0051] Please refer to Figures 4 to 9 , the transmission assembly 30 includes a first magnetic member 31 and a second magnetic member 32; wherein, the first magnetic member 31 is fixedly arranged at the power output end of the driving assembly 20 so that the driving assembly 20 can drive the first magnetic member 31 to rotate; the second magnetic member 32 is fixedly arranged on the rotating shaft 41 so that the second magnetic member 32 can rotate synchronously with the rotating shaft 41 with the central axis of the rotating shaft 41 as the rotation axis.

[0052] The first magnetic member 31 and the second magnetic member 32 are arranged in a non-contact magnetic cooperation manner. For example, the first magnetic member 31 and the second magnetic member 32 are arranged at intervals in the direction of the central axis of the rotating shaft 41. Another example is that the first magnetic member 31 and the second magnetic member 32 are arranged side by side in the radial direction perpendicular to the central axis of the rotating shaft 41.

[0053] By means of the non-contact arrangement form or relative position relationship between the first magnetic member 31 and the second magnetic member 32, a non-contact magnetic coupling transmission structure can be formed between the driving assembly 20 and the acoustic head assembly 40 (i.e., the rotating shaft 41). When the driving assembly 20 drives the first magnetic member 31 to rotate, the first magnetic member 31 and the second magnetic member 32 interact through the magnetic field, which can make the second magnetic member 32 drive the rotating shaft 41 to rotate with the rotation of the first magnetic member 31, so as to realize non-contact transmission between the driving assembly 30 and the acoustic head assembly 40.

[0054] It can be understood that the rotation axis of the first magnetic member 31 and the central axis of the power output end of the driving assembly 20 can be collinear, and the rotation axis of the second magnetic member 32 and the central axis of the rotating shaft 41 can be collinear; for the convenience of distinction and description, the rotation axis of the first magnetic member 31 is defined as the first axis L1, and the rotation axis of the second magnetic member 32 is defined as the second axis L2.

[0055] According to the overall structural framework, volume size, application requirements, etc. of the intracavitary ultrasonic probe 300, different forms of non-contact transmission structures can be established between the driving assembly 30 and the acoustic head assembly 40 by adjusting the relative position relationship between the first magnetic member 31 and the second magnetic member 32.

[0056] In one embodiment, please refer to Figure 4 and Figure 6, the first magnetic member 31 and the second magnetic member 32 are arranged side by side at intervals in such a manner that the first axis L1 is parallel to the second axis L2; it can be understood that, in the radial direction perpendicular to the first axis L1 or the second axis L2, there is a first preset distance between the first magnetic member 31 and the second magnetic member 32. Exemplarily, the whole of the first magnetic member 31 and the whole of the second magnetic member 32 are substantially in a wheel-like structure, the acting surface of the first magnetic member 31 is in the circumferential direction formed by the radial direction around the first axis L1, and the acting surface of the second magnetic member 32 is in the circumferential direction formed by the radial direction around the second axis L2.

[0057] Thus, it can be made that the acting surface of the first magnetic member 31 and the acting surface of the second magnetic member 42 face each other at intervals in the radial direction, so as to form a magnetic cooperation relationship of parallel transmission between the first magnetic member 31 and the second magnetic member 32. Based on the relative position relationship between the first magnetic member 31 and the second magnetic member 32, the rotating shaft 41 and the power output end of the driving assembly 20 are arranged side by side, creating conditions for shortening the overall length dimension of the housing assembly 10 or the intracavitary ultrasonic probe 300.

[0058] In one embodiment, please refer to Figure 7 , the first magnetic member 31 and the second magnetic member 32 are arranged side by side at intervals in such a manner that the first axis L1 is collinear with the second axis L2; it can be understood that, in the direction where the first axis L1 or the second axis L2 is located, there is a second preset distance between the first magnetic member 31 and the second magnetic member 32. Exemplarily, the whole of the first magnetic member 31 and the whole of the second magnetic member 32 are substantially in a disc-like structure, the acting surface of the first magnetic member 31 is in the direction where the first axis L1 is located, and the acting surface of the second magnetic member 32 is in the direction where the second axis L2 is located.

[0059] Thus, it can be made that the acting surface of the first magnetic member 31 and the acting surface of the second magnetic member 32 face each other at intervals in the direction where the first axis L1 or the second axis L2 is located, so as to form a magnetic cooperation relationship of coaxial end face transmission between the first magnetic member 31 and the second magnetic member 32. Based on the relative position relationship between the first magnetic member 31 and the second magnetic member 32, the rotating shaft 41 and the power output end of the driving assembly 20 can be coaxially arranged, creating conditions for realizing the slender design of the whole housing assembly 10 or the intracavitary ultrasonic probe 300.

[0060] In one embodiment, please refer to Figure 9, the first magnetic member 31 is disposed around the outside of the second magnetic member 32, and the first axis L1 is collinear with the second axis L2; thus, in the circumferential direction formed in the radial direction around the first axis L1 or the second axis L2, there is a third preset distance between the first magnetic member 31 and the second magnetic member 32. Exemplarily, the overall shape of the first magnetic member 31 is generally a ring structure, and the acting surface of the first magnetic member 31 is in the circumferential direction formed in the radial direction around the first axis L1; the overall shape of the second magnetic member 32 is generally a wheel structure, and the acting surface of the second magnetic member 32 is in the circumferential direction formed in the radial direction around the second axis L2.

[0061] Thus, the acting surface of the first magnetic member 31 and the acting surface of the second magnetic member 32 can be spaced apart from each other in the circumferential direction, so as to form a magnetic coupling relationship of coaxial internal and external transmission between the first magnetic member 31 and the second magnetic member 32. Based on the relative positional relationship of the coaxial insertion of the first magnetic member 31 and the second magnetic member 32, the rotating shaft 41 and the power output end of the driving assembly 20 can be coaxially arranged, creating conditions for shortening the overall length dimension of the housing assembly 10 or the intracavity ultrasonic probe 300.

[0062] In some embodiments, the overall shape of the first magnetic member 31 is generally a wheel structure, and the overall shape of the second magnetic member 32 is generally a ring structure. The second magnetic member 32 is disposed around the outside of the first magnetic member 31. Also, based on the relative positional relationship of the coaxial insertion of the first magnetic member 31 and the second magnetic member 32, a magnetic coupling relationship of coaxial internal and external transmission can be established between the two.

[0063] In one embodiment, please refer to Figure 8 , the first magnetic member 31 and the second magnetic member 32 are arranged at intervals relative to each other in a form where the first axis L1 intersects the second axis L2; it can be understood that in the direction of the first axis L1 or in the radial direction perpendicular to the first axis L1, there is a fourth preset distance between the first magnetic member 31 and the second magnetic member 32; Exemplarily, the overall shape of the first magnetic member 31 is generally a disc structure, the acting surface of the first magnetic member 31 is in the direction of the first axis L1, the overall shape of the second magnetic member 32 is generally a wheel structure, and the acting surface of the second magnetic member 32 is in the circumferential direction formed in the radial direction around the second axis L2.

[0064] Thus, a magnetic mating relationship for orthogonal transmission can be formed between the first magnetic member 31 and the second magnetic member 32 (i.e., the first axis L1 and the second axis L2 are orthogonal to each other but not in the same plane), or a magnetic mating relationship for tapered transmission can be formed (i.e., the first axis L1 and the second axis L2 are orthogonal to each other and in the same plane). Based on the relative position relationship between the first magnetic member 31 and the second magnetic member 32, the rotating shaft 41 and the power output end of the driving assembly 20 can be arranged perpendicular to each other, which is beneficial to further shortening the overall length dimension of the housing assembly 10 or the intracavitary ultrasound probe 300.

[0065] Of course, according to needs, the relative positions of the first magnetic member 31 and the second magnetic member 32 can also be set arbitrarily, as long as the first magnetic member 31 and the second magnetic member 32 can interact with each other through the formed magnetic field, thereby causing the rotating shaft 41 to drive the sound head assembly 40 to rotate. Details are not described here.

[0066] Based on this, compared with the solution of the related ultrasound probe using a contact transmission structure, the intracavitary ultrasound probe 300 provided in the embodiment of the present application utilizes the non-contact magnetic mating relationship between the first magnetic member 31 and the second magnetic member 32, and can transmit the power output by the driving assembly 20 to the sound head assembly 40 through the action of the magnetic field, realizing non-contact transmission between the driving assembly 20 and the sound head assembly 40. On the one hand, since there is no mechanical contact or friction between the transmission components, problems such as component wear and noise are not likely to occur, which is beneficial to improving the smoothness and accuracy of the rotation of the sound head assembly 40. On the other hand, the power transmission efficiency is higher, and the requirement for the installation accuracy of related components is relatively low, which is not only beneficial to reducing the assembly difficulty of the intracavitary ultrasound probe 300, but also beneficial to simplifying the internal structure of the probe and enhancing the compactness of the probe structure.

[0067] It should be noted that the acting surfaces of the first magnetic member 31 and the second magnetic member 32 refer to the magnetic structure surfaces or magnetic structure parts that can cause magnetic mating between the two (i.e., the magnetic pole polarities are the same and repel each other, or the magnetic pole polarities are opposite and attract each other), such as Figure 5 the surfaces marked with S and N.

[0068] In one embodiment, please refer to Figure 5 , the first magnetic member 31 includes a plurality of first permanent magnets 31a, and the plurality of first permanent magnets 31a are fixedly arranged around the first axis L1 relative to the power output end of the driving assembly 20. For example, the plurality of first permanent magnets 31a are directly fixed around the first axis L1 at the power output end of the driving assembly 20; wherein, the magnetic pole polarities of the acting surfaces of two adjacent first permanent magnets 31a are opposite.

[0069] Based on the same principle, the second magnetic member 32 includes a plurality of second permanent magnets 32a. The plurality of second permanent magnets 32a are fixedly arranged around the second axis L2 relative to the rotating shaft 41. For example, the plurality of second permanent magnets 32a are directly fixed on the rotating shaft 41 around the second axis L2; and the magnetic pole polarities of the acting surfaces of two adjacent second permanent magnets 32a are opposite to each other.

[0070] It can be understood that the acting surface of the first permanent magnet 31a refers to the surface of the first magnet 31a that makes non-contact magnetic cooperation with the second magnet 32a, and the acting surface of the second permanent magnet 32a refers to the surface of the second magnet 32a that makes non-contact magnetic cooperation with the first magnet 31a. The set of acting surfaces of the plurality of first permanent magnets 31a forms the acting surface of the first magnetic member 31, and the set of acting surfaces of the plurality of second permanent magnets 32a forms the acting surface of the second magnetic member 32.

[0071] Thus, when the drive assembly 20 stops power output, the first permanent magnet 31a and the second permanent magnet 32a facing each other will attract each other due to the opposite magnetic pole polarities, so that the first magnetic member 31 and the second magnetic member 32 remain in a relatively static state, thereby realizing the positioning of the rotation angle of the rotating shaft 41 or the sound head assembly 40; when the drive assembly 20 drives the first magnetic member 31 to rotate, the position of the first permanent magnet 31a will be changed. Thus, based on the principle of like poles repelling and opposite poles attracting between the first permanent magnet 31a and the second permanent magnet 32a, a magnetic driving force can be generated on the second magnetic member 32, prompting the second magnetic member 32 to drive the rotating shaft 41 to rotate synchronously, thereby realizing non-contact power transmission.

[0072] In one embodiment, please refer to Figure 5 , the number of the first permanent magnets 31a is the same as or different from the number of the second permanent magnets 32a. By setting the number of the first permanent magnets 31a and the second permanent magnets 32a, the transmission ratio of the transmission assembly 30 can be adjusted to meet the requirements of power transmission.

[0073] Exemplarily, please refer to Figure 5 , the number of the first permanent magnets 31a is set to four. The four first permanent magnets 31a are paired in two to form two first permanent magnet groups. The number of the second permanent magnets 32a is set to six. The six second permanent magnets 32a are paired in two to form three second permanent magnet groups. Since the number of the first permanent magnet groups is less than the number of the second permanent magnet groups, the rotating shaft 41 or the sound head assembly 40 can obtain a higher rotational speed; it can be understood that the number of the first permanent magnet groups is set to N (N is an integer greater than or equal to 1), and the number of the second permanent magnet groups is set to M, where M is an integer greater than N.

[0074] Of course, according to actual needs, the number of the first permanent magnet groups can also be greater than or equal to the number of the second permanent magnet groups, which will not be elaborated here.

[0075] In one embodiment, please refer to Figure 5 , the first magnetic member 31 further includes a first carrier 31b, which is fixedly arranged at the power output end of the driving assembly 20; for example, the driving assembly 20 includes a driving motor 21, and the output shaft of the driving motor 21 serves as the power output end of the driving assembly 20, while the first carrier 31 is sleeved and fixed on the output shaft of the driving motor 21; again, for example, the driving assembly 20 includes power devices such as a driving motor 21 and transmission devices such as a gear set, and the transmission device serves as the power output end of the driving assembly 20 and is connected and arranged between the first carrier 31 and the power device; it can be understood that the geometric center line of the first carrier 31b is the first axis L1.

[0076] A plurality of first permanent magnets 31a are fixedly arranged on the first carrier 31b around the first axis L1; for example, one or more receiving grooves are provided on the first carrier 31b, and the first permanent magnets 31a are inserted and fixed in the receiving grooves by means of gluing, clamping, interference fit, etc., so that at least a part of the first permanent magnets 31a is exposed outside the first carrier 31b to form a part of the acting surface of the first magnetic member 31.

[0077] By integrating a plurality of first permanent magnets 31a on the structure by means of the first carrier 31b, a relatively complete first magnetic member 31 is formed, which is convenient for disassembly, assembly and maintenance of the first magnetic member 31; in specific implementation, the overall structural form of the first magnetic member 31 can be adapted to different transmission forms such as parallel transmission, orthogonal transmission, taper transmission, coaxial transmission, etc. by adjusting the structural forms of the first carrier 31b and the first permanent magnets 31a or the placement manner of the first permanent magnets 31a on the first carrier 31b, which will not be elaborated here.

[0078] In one embodiment, please refer to Figure 5 , the second magnetic member 32 adopts a structural form substantially the same as that of the first magnetic member 31. Specifically, the second magnetic member 32 further includes a second carrier 32b, and the second carrier 32b is fixedly arranged on the rotating shaft 41, that is, the geometric center line of the second carrier 32b is the second axis L2; a plurality of second permanent magnets 32a are fixedly arranged on the second carrier 32b around the second axis L2. Thus, an integrated second magnetic member 32 is formed by combining the second carrier 32b and a plurality of second permanent magnets 32a, which is convenient for disassembly, assembly and maintenance of the second magnetic member 32.

[0079] As described above, the first carrier 31b or the second carrier 32b can also be omitted. By designing the power output end of the driving assembly 20, a plurality of first permanent magnets 31a can be directly fixed to the power output end of the driving assembly 20; or by adjusting the local structure of the rotating shaft 41, a plurality of second permanent magnets 32a can be directly fixed to the rotating shaft 41. Thus, it is beneficial to reduce the number of components of the transmission assembly 30.

[0080] In one embodiment, please refer to Figure 4 and Figure 5 , a first positioning structure 22 is provided between the power output end of the driving assembly 20 and the first magnetic member 31. The first positioning structure 22 is located on one side or opposite sides of the first magnetic member 31 (specifically, the first carrier 31b) in the direction of the first axis L1. By means of the first positioning structure 22, the first magnetic member 31 can be detachably fixed to the power output end of the driving assembly 20, and the first magnetic member 31 is prevented from moving and rotating relative to the power output end of the driving assembly 20.

[0081] Exemplarily, the first positioning structure 22 includes a threaded hole structure and a fastening screw. Among them, the threaded hole structure can be provided on the output shaft of the driving motor 21, or can penetrate the first carrier 31b along the radial direction of the first axis L1, and the threaded hole structure is located on one side or opposite sides of the first carrier 31b in the direction of the first axis L1. The fastening screw is screwed to the output shaft of the driving motor 21 or the first carrier 31b through the threaded hole structure. Thus, the first magnetic member 31 (specifically, the first carrier 31b) is locked and fixed on the output shaft of the driving assembly 21 by means of the screw.

[0082] Of course, the first positioning structure 22 can also adopt other suitable structural members, as long as the first magnetic member 31 can be restricted and fixed to the power output end of the driving assembly 22.

[0083] Based on the same principle or requirement, in some embodiments, please refer to Figure 4 and Figure 5 , a second positioning structure 43 is provided on the rotating shaft 41. For example, the second positioning structure 43 can include structural members such as a threaded hole structure and a screw, and the second positioning structure 43 is arranged on one side or opposite sides of the second carrier 32b (or the second magnetic member 32) in the direction of the second axis L2. Thus, the second magnetic member 32 is detachably restricted and fixed to the rotating shaft 41 by means of the second positioning structure 43.

[0084] In some embodiments, the first magnetic member 31 may include an integrally formed first permanent magnet ring, which is fixedly arranged relative to the power output end of the driving assembly 20. For example, the first permanent magnet ring is sleeved and fixed on the power output end of the driving assembly 20, or is fixed on the power output end of the driving assembly 20 by means of a structural member similar to the first carrier plate 31b. It can be understood that the geometric center line of the first permanent magnet ring is the first axis L1.

[0085] Correspondingly, the second magnetic member 32 includes an integrally formed second permanent magnet ring, which is fixedly arranged relative to the rotating shaft 41. For example, the second permanent magnet ring is sleeved and fixed on the rotating shaft 41, or is fixed on the rotating shaft 41 by means of a structural member similar to the second carrier plate 32b. It can be understood that the geometric center line of the second permanent magnet ring is the second axis L2.

[0086] Thus, when the driving assembly 20 drives the first magnetic member 31 to rotate, by using the non-contact magnetic cooperation relationship between the first permanent magnet ring and the second permanent magnet ring (that is, the two interact with each other through the magnetic field), the second magnetic member 32 can also drive the rotating shaft 41 to rotate, realizing non-contact power transmission.

[0087] In other embodiments, based on requirements such as the rotation angle stroke of the acoustic head assembly 40 and the structural design requirements of the intracavitary ultrasonic probe 300, the first magnetic member 31 and the second magnetic member 32 can also adopt other suitable structural forms. For example, the first magnetic member 31 drives the second magnetic member 32 to rotate in an electromagnetic induction manner; or the first magnetic member 31 and the second magnetic member 32 adopt other suitable geometric shapes or structural configurations; as long as non-contact power transmission can be formed between the driving assembly 20 and the acoustic head assembly 40, all of these will not be elaborated here.

[0088] In one embodiment, please refer to Figure 2 and Figure 3 , the housing assembly 10 includes a connection base 11, an insertion outer shell 12, and a handle outer shell 13. The connection base 11 is connected and arranged between the insertion outer shell 12 and the handle outer shell 13. Among them, the acoustic head assembly 40 is arranged in the acoustic head chamber formed by the connection base 11 and the insertion outer shell 12. The rotating shaft 41 rotates through the connection base 11, so as to establish a rotational connection relationship between the acoustic head assembly 40 and the housing assembly 10. The driving assembly 20 and the transmission assembly 30 (that is, the first magnetic member 31 and the second magnetic member 32) are arranged in the driving chamber formed by the connection base 11 and the handle outer shell 13.

[0089] When the intracavitary ultrasound probe 300 is applied, an operator can hold the handle housing 13 to manipulate the insertion housing 12 to insert into the target tissue, and can also manipulate the driving assembly 20 to control the rotation of the acoustic head assembly 40 in the acoustic head chamber by virtue of the non-contact magnetic cooperation relationship between the first magnetic member 31 and the second magnetic member 32; thereby enabling the acoustic head assembly 40 (specifically, the array element structure 42) to emit ultrasonic waves to the target tissue and receive corresponding ultrasonic echoes during rotation, so as to cooperate with the ultrasound host 100 to perform ultrasonic imaging on the target tissue.

[0090] The above uses specific examples to elaborate on the present invention, which is only used to help understand the present invention and is not intended to limit the present invention. For those skilled in the technical field to which the present invention pertains, several simple deductions, deformations or substitutions can also be made based on the idea of the present invention.

Claims

1. An intracavity ultrasound probe, characterized in that: It comprises a shell assembly, a driving assembly, a transmission assembly and a sound head assembly having a rotating shaft, wherein the sound head assembly is rotatably mounted in the shell assembly via the rotating shaft; the driving assembly is mounted in the shell assembly and is connected to the rotating shaft via the transmission assembly; the driving assembly is used to drive the rotating shaft to rotate, so as to drive the sound head assembly to rotate around the central axis of the rotating shaft; Wherein, the transmission component includes a first magnetic component and a second magnetic component, the first magnetic component is fixedly arranged at the power output end of the driving component, and the second magnetic component is fixedly arranged at the rotating shaft; the first magnetic component and the second magnetic component are non-contact magnetically matched, so that when the driving component drives the first magnetic component to rotate, the second magnetic component can drive the rotating shaft to rotate along with the rotation of the first magnetic component.

2. The intracavity ultrasound probe according to claim 1, characterized in that: The rotation axis of the second magnetic component is collinear with the central axis, and the rotation axis of the first magnetic component is parallel to the rotation axis of the second magnetic component; in a radial direction perpendicular to the central axis, there is a first preset distance between the first magnetic component and the second magnetic component.

3. The intracavity ultrasound probe according to claim 1, characterized in that: The rotation axis of the first magnetic component, the rotation axis of the second magnetic component and the central axis are collinear; in the direction of the central axis, there is a second preset distance between the first magnetic component and the second magnetic component.

4. The intracavity ultrasound probe according to claim 1, characterized in that: The rotation axis of the first magnetic component, the rotation axis of the second magnetic component and the central axis are collinear, and one of the second magnetic component and the first magnetic component is arranged around the outside of the other; in the circumferential direction formed by the radial direction around the central axis, there is a third preset distance between the first magnetic component and the second magnetic component.

5. The intracavity ultrasound probe according to claim 1, characterized in that: The rotation axis of the second magnetic component is colinear with the central axis, and the rotation axis of the first magnetic component intersects with the rotation axis of the second magnetic component; in a radial direction perpendicular to the central axis or in the direction where the central axis is located, there is a fourth preset distance between the first magnetic component and the second magnetic component.

6. The intracavity ultrasound probe according to any one of claims 2 to 5, characterized in that: The first magnetic member includes a plurality of first permanent magnets, the plurality of first permanent magnets are arranged around the rotation axis of the first magnetic member, and the magnetic poles of the active surfaces of two adjacent first permanent magnets are opposite in polarity; the second magnetic member includes a plurality of second permanent magnets, the plurality of second permanent magnets are arranged around the rotation axis of the second magnetic member, and the magnetic poles of the active surfaces of two adjacent second permanent magnets are opposite in polarity; The active surface of the first permanent magnet is the surface of the first permanent magnet that magnetically cooperates with the second permanent magnet, and the active surface of the second permanent magnet is the surface of the second permanent magnet that magnetically cooperates with the first permanent magnet.

7. The intracavity ultrasound probe according to claim 6, characterized in that: A plurality of the first permanent magnets are paired in pairs to form a first permanent magnet group, and a plurality of the second permanent magnets are paired in pairs to form a second permanent magnet group. The number of the first permanent magnet group is less than the number of the second permanent magnet group.

8. The intracavity ultrasound probe according to claim 6, characterized in that: The first magnetic member further includes a first carrier plate, the geometric center line of the first carrier plate is the rotation axis of the first magnetic member, the first carrier plate is fixed to the power output end of the driving assembly, and the first permanent magnet is fixed to the first carrier plate; And / or the second magnetic component further includes a second carrier plate, a geometric center line of the second carrier plate is a rotation axis of the second magnetic component, the second carrier plate is fixed to the rotating shaft, and the second permanent magnet is fixed to the second carrier plate.

9. The intracavity ultrasound probe according to claim 8, characterized in that: The driving assembly comprises a driving motor, and the first carrier is sleeved and fixed on an output shaft of the driving motor.

10. The intracavity ultrasound probe according to any one of claims 2 to 5, characterized in that: The first magnetic component includes an integrally formed first permanent magnetic ring, and the geometric center line of the first permanent magnetic ring is the rotation axis of the first magnetic component; the second magnetic component includes an integrally formed second permanent magnetic ring, and the geometric center line of the second permanent magnetic ring is the rotation axis of the second magnetic component.

11. The intracavity ultrasound probe according to claim 1, characterized in that: A first positioning structure is provided between the first magnetic member and the power output end of the driving assembly, and the first positioning structure is used to detachably fix the first magnetic member to the power output end of the driving assembly; And / or a second positioning structure is provided between the rotating shaft and the second magnetic member, and the second positioning structure is used to detachably fix the second magnetic member to the rotating shaft.

12. The intracavity ultrasound probe according to claim 1, characterized in that: The driving assembly is configured to drive the rotating shaft to drive the acoustic head assembly through the transmission assembly to rotate within a travel angle of not less than 360 degrees.

13. The intracavity ultrasound probe according to claim 1, characterized in that: The housing assembly comprises: an insertion housing for insertion into human tissue during ultrasound imaging; a handle housing, used to control the insertion of the insertion housing and the rotation of the acoustic head assembly when the insertion housing is inserted into human tissue; and The connecting base is arranged between the insertion shell and the handle shell, the rotating shaft rotates and passes through the connecting base, the sound head assembly is arranged in the sound head chamber surrounded by the insertion shell and the connecting base, and the driving assembly and the transmission assembly are arranged in the driving chamber surrounded by the handle shell and the connecting base.

14. An ultrasonic imaging device, characterized in that: include: The intracavity ultrasound probe according to any one of claims 1 to 13, wherein the intracavity ultrasound probe is used to transmit ultrasound to a target tissue and receive a corresponding echo signal; An ultrasound host connected to the intracavitary ultrasound probe, the ultrasound host being used to process the echo signal to generate an ultrasound image; as well as A display device is connected to the ultrasound host, and the display device is used to display the ultrasound image.

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