CN114271855A - Ultrasonic detection probe - Google Patents
Ultrasonic detection probe Download PDFInfo
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- CN114271855A CN114271855A CN202111601665.4A CN202111601665A CN114271855A CN 114271855 A CN114271855 A CN 114271855A CN 202111601665 A CN202111601665 A CN 202111601665A CN 114271855 A CN114271855 A CN 114271855A
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Abstract
The invention discloses an ultrasonic detection probe, which comprises: a housing; an ultrasonic transducer; an acoustically transparent structure disposed at the ultrasound transducer front end; a drive assembly disposed within the housing, the drive assembly for driving the acoustically transparent structure; the sound transmission structure is provided with a first cavity, and a sound transmission medium is arranged in the first cavity. When the drive assembly drives the sound transmission structure to vibrate, shear waves are generated in a detection target, and more ultrasonic signals sent by the ultrasonic transducer can be transmitted in the sound transmission medium through the sound transmission medium in the sound transmission structure, so that the transmission in the sound transmission structure is reduced, the attenuation of the ultrasonic signals can be reduced, and the elastic imaging detection quality is improved.
Description
Technical Field
The invention relates to the technical field of medical instruments, in particular to an ultrasonic detection probe.
Background
Clinical practice shows that the change of the hardness or elasticity of biological tissues is often closely related to the pathological change degree of the tissues, and elastography has important research significance on early diagnosis of soft tissue pathological changes. The Transient Elastography (TE) is used as a liver disease detection technology, has the characteristics of non-invasiveness, rapidness and quantification, can provide effective tools for early screening, diagnosis and treatment evaluation of liver diseases for people with chronic liver diseases, solves the problems of trauma, inaccuracy and the like of the traditional diagnosis mode, and has wide application prospect. Currently, it has been recommended by the global major liver disease guidelines including the world health organization due to its accuracy in diagnosing the degree of fibrosis. But the disadvantage is also obvious, because a single-element probe is usually adopted for detection, the image guidance function is lacked, namely two-dimensional imaging cannot be carried out. The single-array-element probe can only realize one-dimensional imaging and cannot realize two-dimensional imaging. The multi-array element probe can realize two-dimensional imaging and observation of a two-dimensional imaging area, so that an image guide function can be realized. In the process of instantaneous elastography detection, the positions need to be avoided, otherwise, the result of elasticity detection is abnormal and even wrong.
The instantaneous elastography principle is mainly used for judging the hardness of the liver by measuring the propagation speed of low-frequency shear waves in liver tissue fibers, so that the degree of liver fibrosis is evaluated. The shear wave in the instantaneous elastic imaging is to utilize the mechanical vibration of the probe to act on the surface of a detection target, excite the shear wave in the detection target and track and detect the propagation of the shear wave in the central shaft region under the probe. When the size of a probe for exciting shear waves is increased, the excited shear waves have diffraction phenomena to a certain degree, and the shear waves are used for elastic detection, so that the obtained shear wave speed deviates from a true value, and the detection result has deviation or errors. The conventional instantaneous elastography has the problem that image guidance and elastography cannot be compatible.
In order to solve the contradiction between the elasticity detection and the image guidance function in the instantaneous elasticity imaging, the prior proposal is realized by adopting a sound transmission structure (a material which can be penetrated by an ultrasonic signal and has relatively hard characteristic) arranged at the front end of a two-dimensional imaging ultrasonic transducer. However, the addition of the acoustically transparent structure will not only introduce the problem of attenuation of the ultrasound signal, but also affect the propagation speed of the ultrasound signal. In addition, the attenuation of the ultrasonic signal can cause the signal-to-noise ratio of the echo to be reduced, and the signal-to-noise ratio of the vibration displacement signal of the tissue particle caused by the propagation of the shear wave is in positive correlation with the signal-to-noise ratio of the ultrasonic signal. Therefore, attenuation of the ultrasound signal also degrades elastography detection quality.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention is directed to an ultrasound probe for solving the problem of attenuation of ultrasound signals caused by the prior art of disposing a sound-transparent structure at the front end of a two-dimensional imaging ultrasound transducer.
The technical scheme of the invention is as follows:
an ultrasonic testing probe, comprising:
a housing;
an ultrasonic transducer;
an acoustically transparent structure disposed at the ultrasound transducer front end;
a drive assembly disposed within the housing, the drive assembly for driving the acoustically transparent structure; wherein the content of the first and second substances,
the sound transmission structure is provided with a first cavity, and a sound transmission medium is arranged in the first cavity.
In a further aspect of the present invention, the ultrasonic testing probe further comprises: an acoustically transparent membrane that is part of the first cavity.
In a further arrangement of the present invention, the acoustically transparent medium fills the first cavity and contacts the surface of the ultrasonic transducer.
In a further aspect of the present invention, the ultrasonic testing probe further comprises: the capsule cavity is positioned in the first cavity, other surfaces of the capsule cavity except the lower surface are attached to the inner wall of the first cavity, and the lower surface of the capsule cavity is at least partially attached to the surface of the ultrasonic transducer; wherein the acoustically transparent medium is disposed within the capsule cavity.
In a further arrangement of the present invention, the first cavity surrounds the acoustically transparent structure, and the acoustically transparent structure is connected to the ultrasonic transducer.
In a further development of the invention, the acoustically transparent structure is movable integrally with the ultrasound transducer or independently of the acoustically transparent structure.
According to the further arrangement of the invention, when the sound transmission structure and the ultrasonic transducer are integrally movable, the ultrasonic transducer is directly or indirectly connected with the sound transmission structure.
In a further arrangement of the present invention, a transition structure is disposed between the acoustically transparent structure and the ultrasonic transducer.
In a further arrangement of the present invention, when the acoustically transparent structure is independently movable, a connecting member is disposed between the acoustically transparent structure and the ultrasonic transducer.
In a further development of the invention, the acoustically transparent medium is an acoustically transparent liquid.
In a further aspect of the present invention, the ultrasonic testing probe further comprises: an installation part; the installation department is located the sound passes through the structure bottom, and with the sound passes through the structural connection.
In a further aspect of the invention, the acoustically transparent structure is integrally formed with the mounting portion.
The invention is further provided with a second cavity in which the ultrasonic transducer is accommodated.
In a further arrangement of the present invention, the drive assembly comprises:
a vibrator;
one end of the at least one transmission rod is connected with the vibrator, and the other end of the at least one transmission rod is connected with the ultrasonic transducer or the mounting part.
The invention further provides the following steps: a connecting device; the ultrasonic transducer is arranged on the connecting device, and the transmission rod is connected with the connecting device.
In a further aspect of the present invention, the ultrasonic testing probe further comprises: a fixed part; the fixing part is arranged in the shell, and the ultrasonic transducer is arranged on the fixing part; the transmission rod penetrates through the fixing part and is connected with the mounting part.
In a further aspect of the present invention, the ultrasonic testing probe further comprises: and the elastic medium is connected between the mounting part and the shell, or is connected between the connecting device and the shell.
In a further aspect of the present invention, the ultrasonic testing probe further comprises: the first pipeline is communicated with the first cavity; a plug is arranged at one end, far away from the first cavity, of the first pipeline.
In a further embodiment of the invention, the acoustically transparent structure is arranged coaxially with the ultrasound transducer.
In a further arrangement of the present invention, the acoustically transparent structure comprises: a boss portion; the boss is disposed on top of the acoustically transparent structure.
According to a further development of the invention, the projection oscillation generates shear waves in the examination object.
According to a further development of the invention, the surface of the projection has a width of 5 to 15 mm.
In a further arrangement of the present invention, the protruding portion is columnar or circular truncated cone-shaped.
It is a further provision of the invention that the length of the projection surface is less than twice the width of the projection surface.
The invention is further provided with that the included angle between two extension tangent planes in the surface width direction of the convex part and the central shaft in the convex part is 0-30 degrees.
According to a further configuration of the present invention, the ultrasonic transducer is a multi-element ultrasonic transducer.
According to the further arrangement of the invention, the array direction of the array elements of the ultrasonic transducer is arranged corresponding to the length direction of the surface of the convex part.
The invention provides an ultrasonic detection probe, which comprises: a housing; an ultrasonic transducer; an acoustically transparent structure disposed at the ultrasound transducer front end; a drive assembly disposed within the housing, the drive assembly for driving the acoustically transparent structure; the sound transmission structure is provided with a first cavity, and a sound transmission medium is arranged in the first cavity. When the drive assembly drives the sound transmission structure to vibrate, shear waves are generated in a detection target, and more ultrasonic signals sent by the ultrasonic transducer can be transmitted in the sound transmission medium through the sound transmission medium in the sound transmission structure, so that the transmission in the sound transmission structure is reduced, the attenuation of the ultrasonic signals can be reduced, and the elastic imaging detection quality is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of an ultrasonic testing probe according to the present invention.
Fig. 2 is a schematic structural view 1 of a sound-transmitting structure vibrating in synchronization with an ultrasonic transducer in one embodiment of the present invention.
Fig. 3 is a schematic view of the structure of the acoustically transparent structure of the present invention.
Fig. 4 is a schematic view 1 of the internal structure of the acoustically transparent structure in one embodiment of the invention.
Fig. 5 is a schematic view 2 of the internal structure of the acoustically transparent structure in one embodiment of the invention.
FIG. 6 is a schematic view of a boss according to an embodiment of the present invention.
FIG. 7 is a schematic view showing the positional relationship between the end face of the protruding part and the rib in the present invention.
FIG. 8 is a schematic diagram of the position relationship between the protruding part and the rib in the present invention.
Fig. 9 is a schematic structural view 2 of a sound-transmitting structure vibrating in synchronization with an ultrasonic transducer in an embodiment of the present invention.
Figure 10 is a schematic diagram of the structure of an acoustically transparent structure vibrating alone in one embodiment of the invention 1.
Figure 11 is a schematic diagram of a configuration in which the acoustically transparent structure vibrates alone in one embodiment of the invention 2.
FIG. 12 is a schematic view of the connection of the first conduit to the first chamber in one embodiment of the invention.
The various symbols in the drawings: 1. a housing; 2. an ultrasonic transducer; 3. an acoustically transparent structure; 31. a boss portion; 32. an installation part; 33. cutting the extension; 4. a drive assembly; 41. a vibrator; 42. a transmission rod; 5. an acoustically transparent membrane; 6. a first cavity; 7. a bladder cavity; 8. a connecting member; 9. a connecting device; 10. a fixed part; 11. an elastic medium; 12. a first conduit; 121. plugging; 13. an elastic pad.
Detailed Description
The invention provides an ultrasonic detection probe, which is further described in detail below by referring to the attached drawings and examples in order to make the purpose, technical scheme and effect of the invention clearer and clearer. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiments and claims, the articles "a", "an", "the" and "the" may include plural forms as well, unless the context specifically dictates otherwise. If there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or wirelessly coupled. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 12, the present invention provides a preferred embodiment of an ultrasonic testing probe.
As shown in fig. 1 to 3, the present invention provides an ultrasonic testing probe, which includes: the ultrasonic transducer comprises a shell 1, an ultrasonic transducer 2, a sound transmission structure 3 and a driving assembly 4. The sound transmission structure 3 is arranged at the front end of the ultrasonic transducer 2; the driving assembly 4 is arranged in the shell 1, and the driving assembly 4 is used for driving the sound transmission structure 3; the sound transmission structure 3 is provided with a first cavity 6, and a sound transmission medium is arranged in the first cavity 6.
Specifically, the ultrasonic transducer 2 includes a sound absorption block, a wafer, a matching layer, and an acoustic lens, and the ultrasonic transducer 2 is a multi-array element ultrasonic transducer, which may be a linear array ultrasonic transducer, a convex array ultrasonic transducer, or the like. The acoustically transparent medium is an acoustically transparent fluid that can reduce attenuation of the ultrasound signal, for example, the acoustically transparent fluid can be water, an ultrasound coupling fluid, glycerin, or the like.
The interior of the sound transmission structure 3 is hollow, the first cavity 6 is formed, the first cavity 6 is filled with the sound transmission medium, when the driving assembly 4 drives the sound transmission structure 3 at the front end of the ultrasonic transducer 2 to vibrate, shear waves are generated in a target to be detected, and more ultrasonic signals sent by the ultrasonic transducer 2 can be transmitted in the sound transmission medium through the sound transmission medium in the sound transmission structure 3, so that the transmission in the sound transmission structure 3 is reduced, the attenuation of the ultrasonic signals is reduced, and the detection quality of elastic imaging is improved.
Referring to fig. 4, in some embodiments, the ultrasound probe further includes: an acoustically transparent membrane 5, said acoustically transparent membrane 5 being part of said first cavity 6.
Specifically, the acoustically transparent films 5 are symmetrically arranged on two sides of the first cavity 6, and together form a part of the structural wall of the first cavity 6, so that reflection of ultrasonic signals on the inner wall of the acoustically transparent structure 3 can be reduced, and imaging quality can be improved.
Referring to fig. 2, in some embodiments, the acoustically transparent medium fills the first cavity 6 and contacts the surface of the ultrasonic transducer 2.
Specifically, after the sound transmission structure 3 is installed at the front end of the ultrasonic transducer 2, the bottom of the sound transmission structure 3 is connected to the surface of the ultrasonic transducer 2, the ultrasonic transducer 2 and the first cavity 6 form a closed cavity structure, that is, the lower edge of the sound transmission structure 3 is connected to the housing of the ultrasonic transducer 2 without a gap, the surface of the ultrasonic transducer 2 becomes a part of the first cavity 6, and the sound transmission medium in the first cavity 6 is directly contacted to the surface of the ultrasonic transducer 2, so as to ensure that the ultrasonic signal is not blocked and propagated, thereby improving the two-dimensional imaging effect and the elastic detection quality.
Referring to fig. 5, in some embodiments, the ultrasound probe further includes: the capsule cavity 7 is positioned in the first cavity 6, other surfaces of the capsule cavity 7 except the lower surface are attached to the inner wall of the first cavity 6, and the lower surface of the capsule cavity 7 is at least partially attached to the surface of the ultrasonic transducer 2; wherein the acoustically transparent medium is disposed within the capsule cavity 7.
Specifically, the capsule cavity 7 is made of a sound-transmitting material, the upper wall of the first cavity 6 is closely attached to the upper surface of the capsule cavity 7 in a bonding manner, and the lower surface of the capsule cavity 7 is closely attached to the surface of the ultrasonic transducer 2 in a bonding manner. The sound transmission medium is filled in the capsule cavity 7, so that more ultrasonic signals emitted by the ultrasonic transducer 2 can be transmitted in the sound transmission medium, the transmission in the sound transmission structure 3 is reduced, the attenuation of the ultrasonic signals can be reduced, and the elastic detection quality is improved. In one implementation, the capsule body 7 is made of an acoustically transparent material having elasticity, so that the capsule body 7 filled with acoustically transparent liquid can fill the first cavity 6.
Referring to fig. 2 and 3, in a further implementation manner of an embodiment, the acoustically transparent structure 3 further includes: a boss portion 31; the boss 31 is provided on top of the acoustically transparent structure 3.
Specifically, the protruding portion 31 is in a cylindrical shape or a circular truncated cone shape, the end surface of the protruding portion 31 may be in a circular shape, an oval shape, a square shape, or the like, and meanwhile, the end surface of the protruding portion 31 may also be a convex surface or a concave surface. In some embodiments, the cross section of the protrusion 31 has an oval or circular shape, i.e. the protrusion 31 may be a cylinder or an elliptic cylinder, but is not limited to the above shape, and may also be a rectangular parallelepiped. Taking the convex portion 31 as an elliptic cylinder as an example, the cross section of the convex portion 31 is elliptic, and the end surface thereof is also elliptic. Wherein, in order to ensure the detection quality of the instantaneous elastography, the vertical height between the end face of the convex part 31 and the upper surface of the ultrasonic transducer 2 is 2-30mm, for example, 10 mm. In the elastic detection, the vibration of the convex portion 31 can generate shear waves in the detection target.
Referring to fig. 7 and 8, the array direction of the array elements of the ultrasonic transducer 2 is arranged corresponding to the length direction d2 of the surface of the protruding portion 31, and this arrangement facilitates two-dimensional imaging with the multi-array element ultrasonic transducer. The end surface s of the protruding part 31 directly or indirectly acts on the surface of the tissue to be detected, and under the action of mechanical vibration, the end surface s of the protruding part 31 directly and oppositely generates mechanical vibration action with the skin. In order to be able to better generate a shear wave field suitable for transient elastography detection by means of vibrations in the rib space, the dimension d1 of the end face s of the protrusion 31 must not be too large, the length d1 of the minor axis of the ellipse being 5-15mm, as shown in fig. 7. The end surface s of the protruding portion 31 mechanically vibrates to act on the rib gap, and because the position of the rib is relatively fixed, the end surface of the protruding portion 31 presses the skin tissue of the rib gap into the rib gap under the action of the mechanical vibration, and compared with the rib fixing position, an obvious fault is formed, and the fault is favorable for generating shear waves. The dimension d1, which determines the size of the slice plane and directly has a large effect on the shear wavefield generated, is located in the rib space. The dimension d1 should not be too large, and too large dimension can produce diffraction effect on the one hand, is unfavorable for elastic detection, and on the other hand is difficult to place in rib clearance, also is unfavorable for elastic detection. Dimension d1 is consistent with the range of conventional instantaneous elastography probe sizes, typically 5mm,7mm, 10mm for the three model S, M, XL probes, respectively. The model S is suitable for children with narrow rib gaps, and the probe of the model M is adopted for conventional adults, and the probe of the model XL with larger size is adopted for obese patients. The dimension d2 parallel to the rib direction, i.e. the length d2 of the protrusion 31, and the dimension d2 also have an influence on the generation of the shear wave field, but the influence on the generation of the shear wave field is smaller than that of the dimension d1, because the protrusion 31 lacks the rib supporting effect when vibrating in the direction parallel to the rib, the formed fault force is weaker, and the influence on the shear wave field is smaller. The appropriate increase of the dimension d2 facilitates two-dimensional imaging of the multi-element ultrasonic transducer 2 placed behind it, but at the same time takes into account the diffraction effect caused by the oversize, i.e. the length of the surface of the protrusion 31 should be less than twice the width of the surface of the protrusion 31, wherein the relationship between the dimension d1 and the dimension d2 is: d2<2 × d 1.
It will be appreciated that if the boss 31 is cylindrical, i.e. the cross-section of the boss 31 is circular, the diameter of the circle is 5-15 mm.
Referring to fig. 5 and 6, in a further implementation of an embodiment, the acoustically transparent structure 3 is disposed coaxially with the ultrasound transducer 2.
Specifically, the sound-transmitting structure 3 is disposed coaxially with the ultrasonic transducer 2, that is, the protrusion 31 is also disposed coaxially with the ultrasonic transducer 2, so that the ultrasonic signal emitted by the ultrasonic transducer 2 can be transmitted out of the sound-transmitting structure 3, and the ultrasonic signal detection on the detected tissue is realized through the sound-transmitting structure 3.
Referring to fig. 6 and 7, in a further implementation manner of an embodiment, two opposite sides of the protrusion 31 are provided with an extension tangent plane 33, and an included angle α between the extension tangent plane 33 and a central axis of the protrusion 31 is 0 to 30 °.
Specifically, the extension tangent planes 33 are located on both sides of the width direction of the surface of the protruding portion 31, an included angle α between the extension tangent plane 33 and the central axis of the protruding portion 31 is 0 to 30 °, and is approximately a plane, because the array direction of the array elements of the ultrasonic transducer 2 is consistent with the length direction of the rib gap, and the array direction of the array elements of the ultrasonic transducer 2 is correspondingly arranged with the length direction d2 of the surface of the protruding portion 31, in the vibration process, the part of the protruding portion 31 located between the extension tangent planes 33 can enter the rib gap without being blocked, so that effective vibration is formed. In one implementation, the angle α between the extension tangent plane 33 and the central axis of the protrusion 31 may be 0 °.
Referring to fig. 2, 3, 9 and 10, in some embodiments, the ultrasonic testing probe further includes: an installation part 32, the installation part 32 is located at the bottom of the sound transmission structure 3 and is connected with the sound transmission structure 3.
Specifically, the mounting portion 32 is provided with an opening at a position corresponding to the ultrasonic transducer 2, the opening and the protrusion 31 form a second cavity (not labeled in the figure), and the ultrasonic transducer 2 is disposed in the second cavity and directly or indirectly contacts the sound transmission structure 3.
The acoustically transparent structure 3 is provided on the mounting portion 32. The ultrasonic transducer 2 can be accommodated in the second cavity formed by the mounting portion 32 and the protruding portion 31, and directly or indirectly contacts the sound-transmitting structure 3. Thus, the mounting portion 32 is not limited to be made of a sound-transmitting material, as long as an ultrasonic wave propagation channel can be formed between the ultrasonic transducer 2 and the boss portion 31. In some embodiments, the acoustically transparent structure 3 and the mounting portion 32 may be integrally formed.
Referring to fig. 9 and 10, in some embodiments, the first cavity 6 surrounds the acoustically transparent structure 3, and the acoustically transparent structure 3 is connected to the ultrasonic transducer 2. Wherein the sound transmission structure 3 and the ultrasonic transducer 2 are integrally movable or the sound transmission structure 3 is independently movable.
Referring to fig. 2, in some embodiments, the driving assembly 4 includes: the ultrasonic transducer comprises a vibrator 41 and at least one transmission rod 42, wherein one end of the transmission rod 42 is connected with the vibrator 41, and the other end of the transmission rod 42 is connected with the ultrasonic transducer 2 or the mounting part 32.
Specifically, when the sound transmission structure 3 and the ultrasonic transducer 2 move integrally, the transmission rod 42 is connected to the mounting portion 32 or the ultrasonic transducer 2 to synchronously drive the ultrasonic transducer 2 and the sound transmission structure 3 to vibrate. When the acoustically transparent structure 3 vibrates alone, the driving rod 42 is connected to the mounting portion 32 to drive the acoustically transparent structure 3 alone to vibrate, as shown in fig. 2. In some embodiments, there may be 2 or 4 drive links 42.
When the sound transmission structure 3 and the ultrasonic transducer 2 are integrally movable, the ultrasonic transducer 2 and the sound transmission structure 3 are directly or indirectly connected.
For example, when the ultrasound transducer 2 is directly connected to the acoustically transparent structure 3, in one implementation, the ultrasound transducer 2 directly abuts against the bottom surface of the acoustically transparent structure 3, as shown in fig. 8.
Referring to fig. 9, when the sound transmission structure 3 and the ultrasonic transducer 2 move integrally, the housing of the ultrasonic transducer 2 is adhered to the mounting portion 32, or the housing of the ultrasonic transducer 2 and the mounting portion 32 are integrally disposed.
Specifically, the sound transmission structure 3 and the ultrasonic transducer 2 may be connected and fixed in an adhering manner, so as to ensure that the upper surface of the ultrasonic transducer 2 is tightly attached to the mounting portion 32 or the protruding portion 31. In addition, the mounting portion 32 may also serve as a housing of the ultrasonic transducer 2, so that the sound transmission structure 3 and the ultrasonic transducer 2 are integrally disposed, thereby achieving close fitting of the ultrasonic transducer 2 and the mounting portion 32 or the protruding portion 31.
Referring to fig. 9, in a further implementation of an embodiment, when the acoustically transparent structure 3 is integrally movable with the ultrasound transducer 2, the ultrasound probe further includes: the ultrasonic transducer 2 is arranged on the connecting device 9, and the transmission rod 42 is connected with the connecting device 9.
Specifically, a groove structure (not shown) is provided on the connecting device 9, and the ultrasonic transducer 2 is clamped with the connecting device 9 through the groove structure. The transmission rod 42 is connected with the connecting device 9, and the driving assembly 4 drives the connecting device 9 to synchronously drive the ultrasonic transducer 2 and the sound transmission structure 3 to vibrate.
With reference to fig. 9, further, an elastic pad 13 is disposed between the connecting device 9 and the ultrasonic transducer 2, the elastic pad 13 is disposed at the bottom of the groove structure, and after the ultrasonic transducer 2 is mounted on the connecting device 9, an upward force is applied to the ultrasonic transducer 2, so that the connection between the ultrasonic transducer 2 and the sound transmission structure 3 is tighter. In one implementation, the resilient pad 13 may be a rubber pad.
In another implementation manner, a transition structure (not shown) is disposed between the acoustically transparent structure 3 and the ultrasound transducer 2, the transition structure is made of an acoustically transparent material, an ultrasound signal can pass through the transition structure, and the ultrasound transducer 2 and the acoustically transparent structure 3 are connected through the transition structure. The transition structure can be formed by a capsule cavity with an elastic membrane or can be made of a sound-transmitting elastic cushion with certain elasticity, and the elasticity of the transition structure can provide a squeezed force which can ensure that the transition structure and the sound-transmitting structure 3 are attached more tightly and the transition structure and the detection surface of the ultrasonic transducer 2 are attached more tightly, so that no gap exists between the sound-transmitting structure 3 and the ultrasonic transducer 2, and the transmission of ultrasonic signals is facilitated.
According to the ultrasonic imaging device, the ultrasonic transducer 2 and the sound transmission structure 3 are driven to synchronously vibrate by the driving assembly 4, so that the mechanical impact phenomenon between the sound transmission structure 3 and the ultrasonic transducer 2 can be avoided, a gap is prevented from being generated between the sound transmission structure 3 and the ultrasonic transducer 2 in the vibration process, the sound transmission structure 3 and the ultrasonic transducer 2 are kept in a close fit state in the vibration process, the ultrasonic signals sent by the ultrasonic transducer 2 arranged behind the sound transmission structure 3 can be smoothly transmitted to the detected tissue without being blocked, and the influence of the mechanical vibration generated by the sound transmission structure 3 and the ultrasonic transducer 2 on the detection and imaging of the ultrasonic signals is avoided. Meanwhile, the damage of the mechanical impact phenomenon between the sound transmission structure 3 and the ultrasonic transducer 2 to the surface of the ultrasonic transducer 2 in the vibration process is also avoided.
Referring to fig. 10, in some embodiments, when the acoustically transparent structure 3 is independently movable, a connecting member 8 is disposed between the acoustically transparent structure 3 and the ultrasound transducer 2.
Specifically, when the driving assembly 4 drives the sound transmission structure 3 to vibrate independently, a gap is generated between the ultrasonic transducer 2 and the sound transmission structure 3, and by arranging a connecting piece 8 between the ultrasonic transducer 2 and the sound transmission structure 3, the connecting piece 8 has sound transmission and deformation capabilities and can move along with the sound transmission structure 3 when the sound transmission structure 3 vibrates. The connecting member 8 maintains the connection between the acoustically transparent structure 3 and the ultrasonic transducer 2 to avoid a problem that the ultrasonic signal cannot be propagated due to a gap generated when the acoustically transparent structure 3 is vibrated alone.
It should be noted that the movement of the sound-transmitting structure 3 alone includes a case where the ultrasonic transducer 2 can vibrate in the opposite direction of the sound-transmitting structure 3 when the sound-transmitting structure 3 alone vibrates.
In one implementation, the connection 8 may be an elastic acoustically transparent balloon connected between the ultrasound transducer 2 and the acoustically transparent structure 3. Wherein, the elastic sound-transmitting bag body is internally provided with a sound-transmitting medium. The sound-transmitting medium may be a medium in which ultrasonic signals such as water and glycerol can propagate.
Specifically, the elastic acoustic transmission bag body is attached to the surface of the ultrasonic transducer 2 and the surface of the acoustic transmission structure 3, and an acoustic transmission medium capable of transmitting ultrasonic signals is arranged in the elastic acoustic transmission bag body, when the acoustic transmission structure 3 vibrates alone, the elastic acoustic transmission bag body can generate certain deformation under the pulling of the acoustic transmission structure 3, and the elastic deformation can enable the acoustic transmission structure 3 and the ultrasonic transducer 2 to be connected with each other, so that the ultrasonic signals emitted by the ultrasonic transducer 2 can be smoothly transmitted to a detection target through the acoustic transmission structure 3 without being blocked.
Referring to fig. 10, in some embodiments, when the acoustically transparent structure 3 is vibrated alone, the ultrasonic inspection probe further includes: a fixing portion 10, the fixing portion 10 being disposed inside the housing 1, the ultrasonic transducer 2 being disposed on the fixing portion 10; the transmission rod 42 is inserted into the fixing portion 10 and connected to the mounting portion 32.
Specifically, the fixing portion 10 is fixedly connected to the housing 1, and the ultrasonic transducer 2 is disposed on the fixing portion 10, or directly and fixedly connected to the housing 1. The fixing portion 10 is provided with a through hole (not shown in the figures) through which the transmission rod 42 passes, when the driving assembly 4 drives the acoustically transparent structure 3 to vibrate, the transmission rod 42 vibrates in the through hole, the fixing portion 10 does not vibrate with the ultrasonic transducer 2, the acoustically transparent structure 3 is connected with the transmission rod 42, or the transmission rod 42 is connected with the mounting portion 32 to drive the acoustically transparent structure 3 to vibrate independently, wherein an ultrasonic signal propagation channel between the acoustically transparent structure 3 and the ultrasonic transducer 2 can be realized through the connecting member 8.
In some embodiments, when the ultrasound detection probe performs ultrasound signal propagation through the capsule cavity 7 provided with the sound transmission medium, due to the elasticity of the capsule cavity 7, the ultrasound transducer 2 is disposed on the fixing portion 10, so that the sound transmission structure 3 can vibrate independently, as shown in fig. 11.
In a further embodiment of an embodiment, said mounting portion 32 is provided with a first duct 12, said first duct 12 communicating with said first cavity 6; the end of the first conduit 12 remote from the first chamber 6 is provided with a plug 121, as shown in fig. 12.
Specifically, the mounting portion 32 is provided with a first pipe 12, one end of the first pipe 12 communicates with the first cavity 6, and the other end of the first pipe 12 is provided with a plug 121 for sealing, so that the first cavity 6 can be filled with sound-liquid-permeable liquid through the first pipe 12.
It should be noted that, in another implementation, the first conduit 12 may also be directly communicated with the first cavity 6.
In a further implementation of an embodiment, the ultrasound inspection probe further comprises: and an elastic medium 11, wherein the elastic medium 11 is connected between the mounting part 32 and the housing.
Specifically, the mounting portion 32 is directly or indirectly connected to the housing 1 through the elastic medium 11 to form a closed ultrasonic detection probe. The elastic medium 11 has a stretching function, and can make the sound transmission structure 3 complete vibration under the driving of the vibrator 41, and keep being connected with the housing 1.
If the ultrasonic transducer 2 is mounted on the connecting device 9, the elastic medium 11 may be disposed between the connecting device 9 and the housing 1.
In summary, the present invention provides an ultrasonic testing probe, which includes: a housing; an ultrasonic transducer; an acoustically transparent structure disposed at the ultrasound transducer front end; a drive assembly disposed within the housing, the drive assembly for driving the acoustically transparent structure; the sound transmission structure is provided with a first cavity, and a sound transmission medium is arranged in the first cavity. When the drive assembly drives the sound transmission structure to vibrate, shear waves are generated in a detection target, and more ultrasonic signals sent by the ultrasonic transducer can be transmitted in the sound transmission medium through the sound transmission medium in the sound transmission structure, so that the transmission in the sound transmission structure is reduced, the attenuation of the ultrasonic signals can be reduced, and the elastic imaging detection quality is improved.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (27)
1. An ultrasonic testing probe, comprising:
a housing;
an ultrasonic transducer;
an acoustically transparent structure disposed at the ultrasound transducer front end;
a drive assembly disposed within the housing, the drive assembly for driving the acoustically transparent structure; wherein the content of the first and second substances,
the sound transmission structure is provided with a first cavity, and a sound transmission medium is arranged in the first cavity.
2. The elasticity detection device of claim 1, further comprising an acoustically transparent membrane that is part of the first cavity.
3. The ultrasonic detection probe of claim 1, wherein the acoustically transparent medium fills the first cavity and contacts a surface of the ultrasonic transducer.
4. The ultrasonic testing probe of claim 1, wherein the elasticity testing apparatus of claim 1, further comprising: the capsule cavity is positioned in the first cavity, other surfaces of the capsule cavity except the lower surface are attached to the inner wall of the first cavity, and the lower surface of the capsule cavity is at least partially attached to the surface of the ultrasonic transducer; wherein the acoustically transparent medium is disposed within the capsule cavity.
5. The ultrasonic detection probe of claim 1, wherein the first cavity surrounds the acoustically transparent structure, the acoustically transparent structure being connected to the ultrasonic transducer.
6. The ultrasonic detection probe of claim 5, wherein the acoustically transparent structure is movable integrally with the ultrasonic transducer or separately.
7. The ultrasonic detection probe of claim 6, wherein the ultrasound transducer is directly or indirectly connected to the acoustically transparent structure when the acoustically transparent structure is integrally movable with the ultrasound transducer.
8. The ultrasonic detection probe of claim 7, wherein a transition structure is disposed between the acoustically transparent structure and the ultrasonic transducer.
9. The ultrasonic detection probe of claim 6, wherein a connection is provided between the acoustically transparent structure and the ultrasonic transducer when the acoustically transparent structure is alone active.
10. The ultrasonic detection probe of any one of claims 1 to 5, wherein the acoustically transparent medium is acoustically transparent.
11. The ultrasonic detection probe of claim 7 or 9, further comprising: an installation part; the installation department is located the sound passes through the structure bottom, and with the sound passes through the structural connection.
12. The ultrasonic detection probe of claim 11, wherein the acoustically transparent structure is integrally formed with the mounting portion.
13. The ultrasonic detection probe of claim 11, wherein the mounting portion is provided with a second cavity in which the ultrasonic transducer is received.
14. The ultrasonic detection probe of claim 11, wherein the drive assembly comprises:
a vibrator;
one end of the at least one transmission rod is connected with the vibrator, and the other end of the at least one transmission rod is connected with the ultrasonic transducer or the mounting part.
15. The ultrasonic detection probe of claim 14, further comprising: a connecting device; the ultrasonic transducer is arranged on the connecting device, and the transmission rod is connected with the connecting device.
16. The ultrasonic detection probe of claim 14, further comprising: further comprising: a fixed part; the fixing part is arranged in the shell, and the ultrasonic transducer is arranged on the fixing part; the transmission rod penetrates through the fixing part and is connected with the mounting part.
17. The ultrasonic inspection probe of claim 15, further comprising: and the elastic medium is connected between the mounting part and the shell, or is connected between the connecting device and the shell.
18. The ultrasonic detection probe of any one of claims 1 to 5, further comprising: the first pipeline is communicated with the first cavity; a plug is arranged at one end, far away from the first cavity, of the first pipeline.
19. The ultrasonic detection probe of any one of claims 1 to 5, wherein the acoustically transparent structure is disposed coaxially with the ultrasonic transducer.
20. The ultrasonic detection probe of any one of claims 1 to 5, wherein the acoustically transparent structure further comprises: a boss portion; the boss is disposed on top of the acoustically transparent structure.
21. The ultrasonic detection probe of claim 20, wherein the lobe vibrations generate shear waves within a detection target.
22. The ultrasonic detection probe of claim 20, wherein the surface of the boss has a width of 5-15 mm.
23. The ultrasonic detection probe of claim 20, wherein the boss is cylindrical or frustoconical.
24. The ultrasonic detection probe of claim 20, wherein the length of the lobe surface is less than twice the width of the lobe surface.
25. The apparatus according to claim 20, wherein the angle between the two tangent planes extending along the width direction of the surface of the protrusion and the central axis of the protrusion is 0-30 degrees.
26. The elasticity detection device of claim 20, wherein the ultrasonic transducer is a multi-element ultrasonic transducer.
27. The apparatus according to claim 26, wherein the array direction of the array elements of the ultrasonic transducer is arranged corresponding to the length direction of the surface of the protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111601665.4A CN114271855A (en) | 2021-12-24 | 2021-12-24 | Ultrasonic detection probe |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111601665.4A CN114271855A (en) | 2021-12-24 | 2021-12-24 | Ultrasonic detection probe |
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| CN114271855A true CN114271855A (en) | 2022-04-05 |
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| CN202111601665.4A Pending CN114271855A (en) | 2021-12-24 | 2021-12-24 | Ultrasonic detection probe |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114767161A (en) * | 2022-06-20 | 2022-07-22 | 深圳市影越医疗科技有限公司 | Elasticity detection device, method and system |
| WO2023116927A1 (en) * | 2021-12-24 | 2023-06-29 | 深圳市影越医疗科技有限公司 | Phonophoresis structure, elasticity measurement apparatus, probe, system, and method |
-
2021
- 2021-12-24 CN CN202111601665.4A patent/CN114271855A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023116927A1 (en) * | 2021-12-24 | 2023-06-29 | 深圳市影越医疗科技有限公司 | Phonophoresis structure, elasticity measurement apparatus, probe, system, and method |
| CN114767161A (en) * | 2022-06-20 | 2022-07-22 | 深圳市影越医疗科技有限公司 | Elasticity detection device, method and system |
| CN114767161B (en) * | 2022-06-20 | 2022-09-23 | 深圳市影越医疗科技有限公司 | Elasticity detection device, method and system |
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