Intracavity probe and ultrasonic imaging equipment

Abstract

The utility model discloses an intracavity probe and ultrasonic imaging equipment, the intracavity probe comprises a sound head shell, a connecting base, a compensation piece, a pressing piece and a fastening piece, the connecting base and the sound head shell are enclosed to form an accommodating cavity for arranging a sound head assembly, and the connecting base is provided with a mounting interface communicated with the accommodating cavity and a supporting table board enclosed around the mounting interface; the compensation piece seals the mounting interface, so that a coupling liquid storage space is defined by the compensation piece and the cavity wall of the accommodating cavity; the compensation piece is provided with a convex edge stacked on the supporting table top, the pressing piece is provided with a flange stacked on the convex edge, and the fastening piece is connected with the connecting base and abuts against the flange in an attached mode so that the convex edge can be tightly pressed on the supporting table top in a sealed mode. By means of the connection between the fastening piece and the connecting base and the attaching and abutting effect of the fastening piece on the flange, a double-layer fixing structure for the compensation piece can be formed, the compensation piece can be stably sealed, pressed and fixed to the supporting table top, the compensation piece can be protected by means of the pressing piece, and the compensation piece is prevented from being damaged in the dismounting and mounting process.

Description

Technical Field

[0001] The utility model relates to the technical field of medical instruments, in particular to an intracavity probe and ultrasonic imaging equipment. Background Art

[0002] An intracavitary probe is an ultrasound probe that can be inserted into the cavity of a human organ, enabling ultrasound examinations through the anorectal, vaginal, or esophageal channels. The acoustic head assembly (also known as the transducer assembly) in an intracavitary probe is typically located within a sealed space filled with a coupling fluid. The acoustic head assembly transmits ultrasonic waves and receives echoes containing information about human tissue, enabling the acquisition of images of the tissue. The coupling fluid then conducts the ultrasonic waves.

[0003] Because the coupling fluid in a confined space expands and contracts with temperature changes, the movement of the acoustic head assembly can also cause pressure fluctuations in the confined space. Therefore, intracavity probes typically include a pressure compensation element to seal and isolate the confined space from the outside. The deformation of the pressure compensation element caused by pressure fluctuations balances the internal and external pressures of the confined space. However, in related technologies, the assembly and fixation of the pressure compensation element is not reliable, which can easily lead to a series of problems such as coupling fluid leakage from the pressure compensation element due to reduced sealing. Utility Model Content

[0004] The main technical problem solved by the utility model is to provide an intracavity probe and an ultrasonic imaging device using the intracavity probe, which can improve the firmness and sealing of a pressure compensation element.

[0005] According to the first aspect, an embodiment provides an intracavity probe, comprising:

[0006] The housing assembly includes a handle housing, a sound head housing, and a connecting base, wherein the connecting base is connected between the handle housing and the sound head housing, and the connecting base and the sound head housing enclose a receiving cavity;

[0007] A sound head assembly having a main shaft is disposed in the accommodating cavity;

[0008] A drive assembly is disposed in the handle housing and is in driving connection with the main shaft; the drive assembly is used to drive the main shaft to rotate, thereby driving the acoustic head assembly to rotate around the axis of the main shaft; and

[0009] A compensation assembly is provided on the connection base, and the compensation assembly includes a compensation piece, a pressing piece and a fastener;

[0010] The connection base has a mounting interface connected to the accommodating cavity and a support table surrounded by the mounting interface; the compensating member is arranged to seal the mounting interface to form a storage space for the coupling fluid together with the cavity wall of the accommodating cavity;

[0011] The compensating part has a convex edge superimposed on the supporting table surface, the pressing part has a flange superimposed on the side of the convex edge facing away from the supporting table surface, and the fastener is connected to the connecting base; the fastener fits and presses the flange on the side of the flange facing away from the convex edge to seal the convex edge against the supporting table surface.

[0012] In one embodiment, the connection base further has a mounting channel connected to the mounting interface, and the inner diameter of the mounting channel is larger than the inner diameter of the mounting interface, so that the support table is formed at the connection between the mounting channel and the mounting interface;

[0013] The convex edge and the flange are located in the installation channel, and at least a portion of the fastener extends from an end of the installation channel away from the installation interface into the installation channel to fit and press against the flange.

[0014] In one embodiment, an internal thread structure is provided on the peripheral wall of the installation channel, and an external thread structure is provided on the outer peripheral surface of the fastener; the internal thread structure and the external thread structure are threadedly matched to confine the fastener in the installation channel.

[0015] In one embodiment, the fastener is located in the installation channel, and the fastener has a pressing ring portion and a connecting ring portion, the pressing ring portion is used to fit and press the flange, the connecting ring portion is formed on the side of the pressing ring portion facing away from the flange, and the external thread structure is arranged on the outer peripheral surface of the connecting ring portion and / or the outer peripheral surface of the pressing ring portion.

[0016] In one embodiment, an operating structure is provided on a side of the fastener facing away from the flange, and the operating structure is used to allow an auxiliary tool to rotate the fastener.

[0017] In one embodiment, the pressing part also has a first limiting structure, which is arranged at the contour edge position of the flange, and a second limiting structure is provided in the installation channel; the first limiting structure and the second limiting structure are aligned and matched to prevent the pressing part from rotating relative to the compensation part.

[0018] In one embodiment, the first limiting structure includes a limiting protrusion protruding radially from the flange along the installation channel, the second limiting structure includes a limiting chute axially extending along the installation channel and provided on the peripheral wall of the installation channel, and the limiting protrusion is inserted into the limiting chute in a corresponding manner.

[0019] In one embodiment, the compensating member further has a deformation part; the deformation part extends into the accommodating cavity through the installation interface, so that at least part of the deformation part and the cavity wall of the accommodating cavity jointly enclose the storage space; wherein, a deformation cavity is formed inside the deformation part and is hermetically separated from the storage space, the deformation cavity has a vent, and the convex edge is formed around the deformation part at the vent.

[0020] In one embodiment, the pressing member further has a sleeve part, and the flange is formed around the sleeve part at one end of the sleeve part; when the flange tightly presses the convex edge against the support table surface, the sleeve part extends into the deformation cavity through the vent to tightly press at least part of the deformation part against the wall of the installation interface.

[0021] In one embodiment, the pressing member further has a removal structure formed on the inner peripheral wall of the sleeve part, and the removal structure is used for an auxiliary tool to disassemble and assemble the pressing member.

[0022] In one embodiment, the deformation part is a tubular structure made of a flexible deformable material, one end of the deformation part is closed, and the other end is provided with the vent.

[0023] In one embodiment, the deformation part and the convex edge are of an integral structure.

[0024] According to the second aspect, an embodiment provides an ultrasonic imaging device, including an ultrasonic host, a display device, and the intracavitary probe described in the first aspect; wherein, the intracavitary probe is used to collect ultrasonic image information; the ultrasonic host is connected to the intracavitary probe and is used to receive and process the ultrasonic image information to generate an ultrasonic image; the display device is connected to the ultrasonic host to display the ultrasonic image.

[0025] The intracavitary probe according to the above embodiment includes a sound head housing, a connection base, a compensating member, a pressing member, and a fastener. The connection base and the sound head housing enclose an accommodating cavity for arranging the sound head assembly. The connection base has an installation interface communicating with the accommodating cavity and a support table surface surrounding the installation interface; the compensating member closes the installation interface to jointly enclose a storage space for the coupling liquid with the cavity wall of the accommodating cavity; the compensating member has a convex edge stacked on the support table surface, the pressing member has a flange stacked on the convex edge, and the fastener is connected to the connection base and abuts against the flange to tightly press the convex edge against the support table surface.

[0026] On the one hand, by using the connection between the fastener and the connection base and the pressing action of the fastener on the flange, a double-layer fixing structure for the compensating member can be formed, which can not only firmly press and fix the compensating member on the support table, but also protect the compensating member by means of the pressing member to avoid damage to the compensating member during disassembly and assembly. On the other hand, by tightly pressing the convex edge against the support table through the flange, a full-circumference sealing structure can be formed around the compensating member, effectively improving the sealing effect of the compensating member on the installation interface or storage space, and avoiding leakage of the coupling liquid from the connection between the compensating member and the connection base. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a reference schematic diagram of the outer contour structure of an intracavitary probe for an embodiment.

[0028] Figure 2 is Figure 1 a schematic exploded view of the structure of the intracavitary probe in

[0029] Figure 3 a schematic exploded view of the structure of the compensation component in an intracavitary probe for an embodiment.

[0030] Figure 4 a schematic view of the structure of the compensation component in an intracavitary probe for an embodiment in the installed state.

[0031] Figure 5 a reference schematic diagram of the structure of an ultrasonic imaging device for an embodiment.

[0032] In the figure:

[0033] 10. Housing assembly; 11. Handle housing; 12. Probe head housing; 13. Connection base; 13a. Installation interface; 13b. Installation channel; 13c. Support table; 13d. Second limiting structure; 20. Probe head assembly; 30. Compensating member; 31. Convex edge; 32. Deformation part; 32a. Deformation cavity; 40. Pressing member; 41. Flange; 42. First limiting structure; 43. Sleeve part; 50. Fastener; 51. Pressing ring part; 52. Connection ring part; 53. Operating structure;

[0034] 100. Ultrasonic host; 200. Display device; 300. Intracavitary probe; 400. Cable. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] The present utility model will be further described in detail below in conjunction with the accompanying drawings through specific embodiments. Similar elements in different embodiments are labeled with related similar element numbers. In the following embodiments, many detailed descriptions are provided 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, or methods. In some cases, some operations related to the present application are not shown or described in the specification to avoid overwhelming the core part of the present application with excessive descriptions. 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 descriptions in the specification and general technical knowledge in the art.

[0036] In addition, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can also be reordered or adjusted in a manner that is obvious to 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 that they are the necessary sequences, unless it is stated that a certain sequence must be followed.

[0037] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the described objects and do not have any sequential or technical meaning. The terms "connection" and "coupling" used in the present application, unless otherwise specified, both include direct and indirect connection (coupling).

[0038] Please refer to Figures 1 to 4 , an embodiment of the present application provides an intracavitary probe that can be inserted into the cavity of a human organ to obtain ultrasonic image information of human tissues by transmitting ultrasonic signals and receiving corresponding ultrasonic echoes; the intracavitary probe includes a housing assembly 10, a sound head assembly 20 having a main shaft, a compensation assembly, a drive assembly, and other functional components as required, which will be specifically described below.

[0039] Please refer to Figure 1 and Figure 2 , the housing assembly 10 includes a handle housing 11, a sound head housing 12, and a connection base 13; wherein, the connection base 13 is connected and disposed between the handle housing 11 and the sound head housing 12, and the connection base 13 and the sound head housing 12 enclose a receiving cavity for accommodating the sound head assembly 20, and the connection base 13 and the handle housing 11 enclose a drive cavity for accommodating the drive assembly.

[0040] Among them, the driving component can be drivingly connected to the main shaft of the sound head component 20 through transmission components such as a synchronous belt component and a gear component, so that the driving component can drive the main shaft to rotate, and further the main shaft can drive the sound head component 20 to rotate around the axis of the main shaft in the accommodating cavity.

[0041] Please refer to Figure 3 and Figure 4 , the compensation component is fixedly arranged on the connection base 13, and at least a part of the compensation component and the cavity wall of the accommodating cavity jointly enclose a storage space for the coupling liquid. It can also be understood that the accommodating cavity is sealed by the compensation component at the connection base 13 to construct the accommodating cavity into a closed storage space. When the pressure in the storage space (i.e., the accommodating cavity) changes due to temperature changes, the movement of the sound head component 20 or other factors, the compensation component can be used to balance the internal and external pressures of the storage space, avoiding problems such as leakage of the coupling liquid, thereby ensuring the normal use of the probe in the cavity.

[0042] Exemplarily, when the intracavity probe is applied (for example, cooperating with an ultrasound host for ultrasound imaging), the operator can insert the sound head housing 12 into the cavity of a human organ through the anus, vagina, esophagus or other cavities by holding the handle housing 11; meanwhile, the driving component can be controlled to work by means of the handle housing 11 to drive the sound head component 20 to rotate in the accommodating cavity or the storage space (for example, the sound head component 20 rotates around the axis of the main shaft for a 360-degree stroke angle); in this way, during the rotation of the sound head component 20, ultrasonic signal can be emitted to the human tissue and the corresponding ultrasonic echo can be received to obtain the ultrasonic image information of the target tissue, and then the ultrasonic image information can be processed by means of the ultrasound host to generate the ultrasonic image of the target tissue, for example, finally realizing 360-degree scanning and ultrasonic imaging of the target tissue.

[0043] The following mainly introduces the compensation component and the structures related to it. Other components of the intracavity probe (such as the driving component, the sound head component 20, etc.) can refer to the prior art and will not be elaborated here.

[0044] Please refer to Figure 3 , the connection base 13 has an installation interface 13a and an installation channel 13b; among them, the installation interface 13a is communicatively arranged between the installation channel 13b and the accommodating cavity; the inner diameter of the installation channel 13b is set to be larger than the inner diameter of the installation interface 13a, so that a stepped structural surface surrounding the installation interface 13a can be formed at the communication part between the installation channel 13b and the installation interface 13a. For the convenience of distinction and description, this stepped structural surface is defined as the support table surface 13c;

[0045] Exemplarily, please refer to Figure 3, the installation interface 13a and the installation channel 13b are arranged to penetrate through the connection base 13 generally along the inner and outer directions of the connection base 13; specifically, the so-called inner and outer here means that the side of the connection base 13 facing or surrounding the accommodation cavity is the inner side, and the opposite side is the outer side. It can be understood that the installation channel 13b is located on the outer side of the installation interface 13a relative to the accommodation cavity.

[0046] Please refer to Figure 3 and Figure 4 , the compensation component includes a compensating member 30, a pressing member 40 and a fastening member 50; among them, the compensating member 30 has a convex edge 31. Exemplarily, the convex edge 31 can be a closed-loop structure formed by surrounding the geometric center line of the compensating member 30 (specifically, such as an annular, rectangular or other geometric-shaped annular form); the convex edge 31 is arranged in the installation channel 13 and overlaps on the support table 13c, so that the compensating member 30 can close the installation interface 13a, so that the compensating member 30 and the cavity wall of the accommodation cavity jointly enclose a storage space for the coupling liquid.

[0047] At least a part of the compensating member 30 (for example, the part other than the convex edge 31) can be made of an elastic flexible material, such as rubber, silica gel and other materials; this can make the compensating member 30 elastically deform in response to the pressure change in the storage space when closing the installation interface 13a, so as to adapt to the pressure change and adjust the volume of the storage space, and achieve the balance of the pressure inside and outside the storage space.

[0048] The pressing member 40 has a flange 41 arranged in the installation channel 13b, and the flange 41 overlaps on the side of the convex edge 31 facing away from the support table 13c. Exemplarily, the flange 41 can adopt a closed-loop structure adapted to the contour shape of the convex edge 31; and the fastening member 50 is arranged in the installation channel 13b and is located on the side of the flange 41 facing away from the convex edge 31. The outer peripheral surface of the fastening member 50 is provided with an external thread structure, and the peripheral wall of the installation channel 13b is provided with an internal thread structure.

[0049] By the cooperation of the internal thread structure and the external thread structure, the fastening member 50 can be restricted in the installation channel 13b to establish a structural connection relationship between the fastening member 50 and the connection base 13; at the same time, by rotating the fastening member 50, the fastening member 50 can be made to fit and press against the flange 41 on the side of the flange 41 facing away from the convex edge 31, so as to use the flange 41 to tightly seal and press the convex edge 31 on the support table 13c, thereby fixing the compensating member 30 to the connection base 13 in the form of closing the installation interface 13a or sealing the storage space.

[0050] Since the intracavity probe is mainly used for in-vivo ultrasonic diagnosis, there are strict restrictions on the size of one end of the probe that is inserted into the cavity of the human organ. Therefore, in the related art, the compensating member 30 is usually directly fixed to the connecting base 13 in an interference fit manner by using a base similar to the pressing member 40, and the sealing of the coupling liquid storage space is achieved. However, in some cases (such as when the pressure in the storage space changes significantly due to high temperature, low temperature or other factors), problems such as a decrease in the sealing performance of the compensating member 30 for the storage space and the separation of the compensating member 30 from the connecting base 13 are likely to occur, resulting in the failure of the intracavity probe due to the leakage of the coupling liquid from the compensating member 30 and making it unusable. At the same time, in the process of disassembling and assembling the compensating member 30 in an interference manner, not only is it easy to damage the compensating member 30, but the operation difficulty is also high.

[0051] The intracavity probe provided by the embodiment of the present application, due to the threaded connection relationship between the fastening member 50 and the connecting base 13, enables the fastening member 50 to fit and press against the flange 41 in the installation channel 13b, so as to seal and press the convex edge 31 against the support table 13c by means of the flange 41, thus forming a double-layer fixing structure for the compensating member 30 (specifically, the convex edge 31).

[0052] First, the pressing member 40 can form a structural protection for the compensating member 30 between the compensating member 30 and the fastening member 50. It can not only prevent the compensating member 30 from being damaged due to direct contact with the fastening member 50 during the disassembly and assembly operation of the fastening member 50, but also firmly press and fix the compensating member 30 to the connecting base 13 to avoid affecting its sealing performance due to the insecure fixation of the compensating member 30.

[0053] Second, establishing a threaded structural connection relationship between the fastening member 50 and the connecting base 13 in the installation channel 13b can reduce the requirements for the size of the connecting base 13 by the compensation component, making full use of the structure of the connecting base 13. It will not only cause an increase in the overall volume and weight of the probe, but also be beneficial to the miniaturization and lightweight design of the intracavity probe. At the same time, by rotating the fastening member 50, the compensation component can be disassembled and maintained conveniently and quickly, effectively reducing the difficulty of the disassembly and maintenance operation of the compensation component.

[0054] Third, by means of the flange 41, the convex edge 31 is sealed and pressed against the support table 13c, forming a full-circumference sealing structure around the compensating member 30 or the installation interface 13a, effectively improving the sealing effect of the compensating member 30 on the installation interface 13a or the storage space, and avoiding the leakage of the coupling liquid from the connection between the compensating member 30 and the connecting base 13.

[0055] In other embodiments, the fastener 50 can also be fixedly connected to the connection base 13 in other ways; for example, the fastener 50 is inserted and fixed in the installation channel 13b by means of bonding, interference fit, welding, etc., and the convex edge 31 is pressed and fixed to the support table 13c by fitting and pressing against the flange 41. Another example is that a part of the fastener 50 extends into the installation channel 13b from one end of the installation channel 13b away from the installation interface 13a and fits and presses against the flange 41, and another part of the fastener 50 is fixedly connected to the connection base 13 on the outside of the connection base 13 by means of locking, clamping, bonding, welding, etc.

[0056] Another example is that the installation channel 13b is omitted, the convex edge 31 and the flange 41 are arranged in a sequential and laminated manner between the support table 13c and the fastener 50, and the fastener 50 can be fixed to the connection base 13 by means of locking, clamping, bonding, welding, etc.; at this time, the support table 13c can be understood as the area part of the outer wall surface of the connection base 13 that surrounds the installation interface 13a. All these are not elaborated here.

[0057] In one embodiment, please refer to Figure 3 and Figure 4 , the compensator 30 further has a deformation part 32 made of a flexible deformable material (such as silica gel, rubber, etc.), a deformation cavity 32a is formed inside the deformation part 32, and the deformation cavity 32a has a vent hole that communicates the deformation cavity 32a with the outside; wherein, the convex edge 31 is formed around the deformation part 32 at the vent hole.

[0058] In the state where the compensator 30 is assembled and fixed to the connection base 13, the convex edge 31 is hermetically pressed by the flange 41 against the support table 13c, and the deformation part 32 extends into the accommodation cavity through the installation interface 13a, so that the compensator 30 relies on at least part of the deformation part 32 and the cavity wall of the accommodation cavity to jointly enclose a storage space for the coupling liquid; at this time, the deformation cavity 32a is hermetically separated from the storage space, and is connected to an external space (such as a driving chamber) that is isolated from the storage space through the vent hole.

[0059] Thus, when the pressure in the storage space changes, it can cause the deformation part 32 to elastically deform, so that the gas in the deformation cavity 32a enters and exits between the deformation cavity 32a and the external space through the vent hole, causing the volume of the deformation cavity 32a to adapt to the internal and external pressure difference of the storage space, so as to achieve the effect of balancing the internal and external pressures of the storage space; for example, when the pressure in the storage space increases due to temperature rise or the movement of the sound head assembly 20, an extrusion effect on the deformation part 32 is formed, so that the volume in the deformation cavity 32a becomes smaller due to the gas discharging from the deformation cavity 32a through the vent hole; on the contrary, when the pressure in the storage space decreases, the volume of the deformation cavity 32a will correspondingly become larger.

[0060] By arranging the deformation part 32 in the accommodation cavity, the internal space of the accommodation cavity can be fully utilized to jointly enclose a storage space with the cavity wall of the accommodation cavity; this can not only reduce the occupation of the external structural space of the accommodation cavity by the compensating part 30, but also facilitate the disassembly, installation and maintenance of the compensating part 30.

[0061] In one embodiment, please refer to Figure 3 and Figure 4 , the deformation part 32 is a tubular structure made of a flexible deformable material (such as silicone or rubber material). One end of the deformation part 32 located in the accommodation cavity is closed, and the other end opposite thereto is a ventilation port, and the tubular space of the deformation part 32 is the deformation cavity 32a.

[0062] By adopting the tubular deformation part 32, not only can the deformation part 32 have a deformation amplitude capable of adapting to the change in the internal pressure of the storage space, that is, the volume change of the deformation cavity 32a can adapt to the change in the pressure in the storage space, but it is also convenient for the forming of the deformation part 32.

[0063] During specific implementation, the deformation part 32 and the convex edge 31 can be an integral structure. For example, the compensating part 30 with the deformation part 32 and the convex edge 31 is integrally formed by injection molding or the like; in this way, the integrity of the structure of the compensating part 30 can be effectively enhanced, which is convenient for the manufacturing, forming, disassembly, installation and maintenance of the compensating part 30.

[0064] In some embodiments, the compensating part 30 can be set as a split combination structure according to actual needs, which will not be elaborated here.

[0065] In some embodiments, the deformation part 32 can also adopt other suitable structural forms, such as a bladder structure with an opening, a spherical shell structure with an opening or a diaphragm structure with a large material deformation amplitude, etc., as long as it can adapt to the change in the pressure in the storage space to achieve the effect of balancing the internal and external pressures of the storage space; all these will not be elaborated here.

[0066] In one embodiment, please refer to Figure 3 and Figure 4 , the fastener 50 has a pressing ring part 51 and a connecting ring part 52; wherein, the pressing ring part 51 is used to be stacked on the flange 41 to tightly seal and press the convex edge 31 against the support table surface 13c through the flange 41; and the connecting ring part 52 is formed on the side of the pressing ring part 51 facing away from the flange 41, and the connecting ring part 52 is mainly used to establish a structural fixed connection relationship between the fastener 50 and the connecting base 13; for example, an external thread structure can be arranged on the outer peripheral surface of the connecting ring part 52, and the fastener 50 is screwed into the installation channel 13b through the connecting ring part 52.

[0067] By setting the fastener 50 as a whole into an annular shape, the contours of the fastener 50, the flange 41, the ridge 31 and the support table 13c can be adapted to each other, which is conducive to the cooperation between the pressing ring portion 51 and the flange 41, and the ridge 31 is pressed and sealed to the support table 13c in the form of full-circle pressing; at the same time, the structural space occupied by the fastener 50 of the connection base 13 (specifically, the installation channel 13b) is reduced; in some embodiments where the compensating part 30 has a deformation cavity 32a and a vent, the use of an annular fastener 50 can avoid the fastener 50 from blocking or covering the vent, creating favorable conditions for the smooth flow of gas into and out of the deformation cavity 32a.

[0068] For one example, see Figure 3 An operating structure 53 is also provided on the side of the fastener 50 facing away from the flange 41. The operating structure 53 is mainly used for allowing an auxiliary tool (such as a screwdriver, etc.) to rotate the fastener 50 so as to realize the disassembly and assembly of the entire compensation assembly by disassembling and assembling the fastener 50.

[0069] For example, the operating structure 53 may be a groove structure provided on the side of the connecting ring portion 52 facing away from the pressing ring portion 51 , or may be other suitable structures.

[0070] For one example, see Figure 3 The pressing piece 40 also has a first limiting structure 42, which is arranged at the contour edge position of the flange 41; accordingly, a second limiting structure 13d is provided in the installation channel 13b for aligning with the first limiting structure 42. With the help of the alignment and matching relationship between the first limiting structure 42 and the second limiting structure 13d, the pressing piece 40 can be guided to move linearly along the inward and outward directions of the connection base 13 in the installation channel 42b, so as to finally press and fix the flange 31 to the support table 13c, and the pressing piece 40 can also rotate relative to the flange 31 during the movement, thereby avoiding damage to the flange 31 or the compensation piece 30.

[0071] Exemplarily, the first limiting structure 42 can be one or more limiting protrusions provided on the outer ring contour surface protruding from the flange 41, and the second limiting structure 13d can be one or more limiting grooves extending along the inward and outward directions of the connecting base 13 and provided in the mounting channel 13b, and the limiting protrusions are slidably inserted into the corresponding limiting grooves.

[0072] In this way, during the process of rotating the fastening member 50 to fit against the pressing flange 41, the pressing member 40 can linearly move in the inner and outer directions along the installation channel 13c under the cooperation of the first limiting structure 42 and the second limiting structure 13d, so as to finally press and fix the convex edge 31 on the supporting table surface 13c. At the same time, due to the limitation of the first limiting structure 42 and the second limiting structure 13d, the pressing member 40 cannot rotate relative to the compensating member 30 or the convex edge 31, so that the pressing member 40 can only provide a pressing force to the convex edge 31, thereby avoiding the convex edge 31 from being distorted or worn, and ensuring the fixing effect of the compensating member 30 and the sealing effect on the installation interface 13a.

[0073] In other embodiments, the first limiting structure 42 and the second limiting structure 13d can also adopt other structural forms. For example, the first limiting structure 42 is a notch structure provided at the contour edge position of the flange 41, and the second limiting structure 13d is a protruding structure provided on the peripheral wall of the installation channel 13b.

[0074] In one embodiment, please refer to Figure 4 , the pressing member 40 further has a sleeve portion 43, and the flange 41 is formed around the sleeve portion 43 at one end of the sleeve portion 43. When the flange 41 seals and presses the convex edge 31 on the supporting table surface 13c, the sleeve portion 43 extends into the deformation cavity 32a through the air vent, so that the side wall of the deformation portion 32 can be sealed and pressed on the wall of the installation interface 13a by using the sleeve portion 43. For example, the sleeve portion 43 seals and presses the side wall of the deformation portion 32 on the wall of the installation interface 13a in an interference fit manner.

[0075] Thus, by the flange 41 sealing and pressing the convex edge 31 on the supporting table surface 13c outside the deformation cavity 32a, and by the sleeve portion 43 sealing and pressing the deformation portion 32 on the wall of the installation interface 13a inside the deformation cavity 32a, a double-sealing structure can be formed for the installation interface 13a or the storage space by means of the compensating member 30, thereby effectively improving the sealing performance of the compensating member 30 and avoiding the leakage of the coupling liquid from the connection between the compensating member 30 and the connection base 13.

[0076] At the same time, due to the structural forms of the sleeve portion 43 and the flange 41, it is possible to prevent the pressing member 40 from blocking or covering the air vent, creating favorable conditions for the smooth entry and exit of gas from the deformation cavity 32a.

[0077] In one embodiment, the pressing member 40 further has a removal structure (not shown in the figure). The removal structure can be a threaded structure, a protruding structure, a groove structure, etc. formed on the inner peripheral wall of the sleeve portion 43. When disassembling or installing the compensation component, by using the cooperation between the removal structure and the auxiliary tool, the pressing member 40 can be conveniently and quickly placed in the installation channel 10c or removed from the installation channel 10c.

[0078] Please refer to Figure 5 and in combination with Figures 1 to 4 , the embodiment of the present application further provides an ultrasonic imaging device, including an ultrasonic main unit 100, a display device 200 and the intracavitary probe 300 of the foregoing embodiment; wherein, the intracavitary probe 300 is used to be inserted into the cavity of a human organ to obtain ultrasonic image information of a target tissue by transmitting ultrasonic signals and receiving corresponding ultrasonic echoes; the structural configuration and beneficial effects of the intracavitary probe 300 have been described above and will not be elaborated here; the ultrasonic main unit 100 is connected to the intracavitary probe 300 and is used to process echo signals to generate ultrasonic images; the display device 200 is connected to the ultrasonic main unit 100 and is used to display ultrasonic images for doctors to perform medical diagnoses.

[0079] Exemplarily, the ultrasonic main unit 100 can be a desktop main unit, the display device 200 is arranged on the ultrasonic main unit 100, a socket is provided on the ultrasonic main unit 100, the intracavitary probe 300 is connected with a cable 400, a plug is provided at one end of the cable 400 away from the intracavitary probe 300, and the plug can be inserted into the socket of the ultrasonic main unit 100, so as to achieve the signal connection between the intracavitary probe 300 and the ultrasonic main unit 100. Of course, the ultrasonic main unit 100 can also be a portable main unit integrated with the display device 200.

[0080] 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 belongs, several simple deductions, deformations or substitutions can also be made according to the idea of the present invention.

Claims

1. An intracavity probe, characterized in that: include: The housing assembly includes a handle housing, a sound head housing, and a connecting base, wherein the connecting base is connected between the handle housing and the sound head housing, and the connecting base and the sound head housing enclose a receiving cavity; A sound head assembly having a main shaft is disposed in the accommodating cavity; A drive assembly is disposed in the handle housing and is in driving connection with the main shaft; the drive assembly is used to drive the main shaft to rotate, thereby driving the acoustic head assembly to rotate around the axis of the main shaft; as well as A compensation assembly is provided on the connection base, and the compensation assembly includes a compensation piece, a pressing piece and a fastener; The connection base has a mounting interface connected to the accommodating cavity and a support table surrounded by the mounting interface; the compensating member is arranged to seal the mounting interface to form a storage space for the coupling fluid together with the cavity wall of the accommodating cavity; The compensating member has a convex edge superimposed on the supporting table, the pressing member has a flange superimposed on a side of the convex edge facing away from the supporting table, and the fastener is connected to the connecting base; The fastener is fitted and pressed against the flange on a side of the flange facing away from the convex edge, so as to seal and press the convex edge tightly against the support table.

2. The intracavity probe according to claim 1, wherein: The connection base further has a mounting channel connected to the mounting interface, and the inner diameter of the mounting channel is larger than the inner diameter of the mounting interface, so as to form the support table at the connection point between the mounting channel and the mounting interface; The convex edge and the flange are located in the installation channel, and at least a portion of the fastener extends from an end of the installation channel away from the installation interface into the installation channel to fit and press against the flange.

3. The intracavity probe according to claim 2, wherein: An internal thread structure is provided on the peripheral wall of the installation channel, and an external thread structure is provided on the outer peripheral surface of the fastener; the internal thread structure and the external thread structure are threadedly matched to confine the fastener in the installation channel.

4. The intracavity probe according to claim 3, wherein: The fastener is located in the installation channel, and the fastener has a pressing ring portion and a connecting ring portion. The pressing ring portion is used to fit and press the flange, and the connecting ring portion is formed on the side of the pressing ring portion facing away from the flange. The external thread structure is arranged on the outer peripheral surface of the connecting ring portion and / or the outer peripheral surface of the pressing ring portion.

5. The intracavity probe according to claim 3, wherein: An operating structure is provided on a side of the fastener facing away from the flange, and the operating structure is used for allowing an auxiliary tool to rotate the fastener.

6. The intracavity probe according to claim 2, wherein: The pressing part also has a first limiting structure, which is arranged at the contour edge position of the flange, and a second limiting structure is provided in the installation channel; the first limiting structure and the second limiting structure are aligned and matched to prevent the pressing part from rotating relative to the compensation part.

7. The intracavity probe according to claim 6, wherein: The first limiting structure includes a limiting protrusion, which protrudes from the flange along the radial direction of the installation channel. The second limiting structure includes a limiting slide groove, which extends along the axial direction of the installation channel and is arranged on the peripheral wall of the installation channel. The limiting protrusion is inserted into the limiting slide groove in a corresponding position.

8. The intracavity probe according to any one of claims 1 to 7, characterized in that: The compensation part also has a deformable portion; the deformable portion extends into the accommodating cavity through the mounting interface so that at least part of the deformable portion and the cavity wall of the accommodating cavity together form the storage space; wherein, a deformable cavity sealed and separated from the storage space is formed inside the deformable portion, the deformable cavity has a vent, and the convex edge is formed around the deformable portion at the vent.

9. The intracavity probe according to claim 8, wherein: The pressing part also has a sleeve portion, and the flange is formed around the sleeve portion at one end of the sleeve portion; when the flange seals the convex edge to the support table, the sleeve portion extends into the deformation cavity through the vent to seal and press at least part of the deformation portion to the mouth wall of the mounting interface.

10. The intracavity probe according to claim 9, wherein: The pressing piece further has a disassembly structure formed on the inner peripheral wall of the sleeve portion, and the disassembly structure is used for auxiliary tools to disassemble and assemble the pressing piece.

11. The intracavity probe according to claim 8, wherein: The deformation part is a tubular structure made of a flexible deformable material, one end of the deformation part is closed, and the other end is provided with the vent.

12. The intracavity probe according to claim 8, wherein: The deformation portion and the convex edge are an integrated structure.

13. An ultrasonic imaging device, characterized in that: It comprises an ultrasound host, a display device and an intracavity probe according to any one of claims 1 to 12; wherein the intracavity probe is used to collect ultrasound image information; the ultrasound host is connected to the intracavity probe and is used to receive and process the ultrasound image information to generate an ultrasound image; the display device is connected to the ultrasound host to display the ultrasound image.

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