Volume probe

Abstract

The utility model relates to medical instrument technical field discloses a kind of volume probe, volume probe includes pedestal, pivot, sound head and flexible circuit board, the utility model by limiting flexible circuit board includes first straight line part, first curved portion, second curved portion and second straight line part, and limit first curved portion and second curved portion are all away from the center line of pivot arrangement, so that second curved portion can be deformed along with the swing of first curved portion, to disperse the pressure received by flexible circuit board, avoid second curved portion when being located on the extension line of the center line of pivot, the bending of second curved portion is limited, and stress is concentrated at first curved portion, simultaneously concentrated at the connecting position between first curved portion and second curved portion to cause the failure of flexible circuit board, the volume probe in the embodiment can improve the balance of stress distribution, further improve the service life of flexible circuit board, to reach the technical effect of improving the service life of volume probe.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a volume probe. Background Technology

[0002] A volumetric probe is an ultrasonic probe with three-dimensional imaging capabilities. It mainly uses a drive motor to move the acoustic head within a fixed angular range. The acoustic head is used to emit and receive ultrasonic signals. The ultrasonic signals emitted by the acoustic head reach the area to be imaged, are reflected back to the acoustic head, are received by the acoustic head, converted into electrical signals, and transmitted to the host to form an image.

[0003] Currently, volumetric probes generally come in two types. One type consists of a probe head, including a front-end board, a probe wire (small-diameter core wire), and a rear-end board. One end of the probe wire is soldered to the front-end board, and the other end is soldered to the rear-end board, which then electrically connects to the host unit. The other type uses a flexible printed circuit board (FPC) and cables. One end of the FPC is soldered to the probe head, and the other end is electrically connected to the host unit via cables.

[0004] Because the acoustic head of a volumetric probe needs to oscillate back and forth within a certain angle range, the acoustic head wire and flexible circuit board will oscillate back and forth with the acoustic head. Due to the large number of wires and their small diameter within the acoustic head wire, the soldering between the acoustic head wire and the front-end board of the acoustic head, as well as between the acoustic head wire and the rear-end board of the acoustic head, is extremely difficult and costly. It can also easily cause irregular oscillation of the acoustic head, affecting the imaging of the volumetric probe.

[0005] The flexible circuit board has a sheet-like integral structure. Compared with the acoustic probe wire, the flexible circuit board does not have an acoustic probe wire inside, which can reduce the design difficulty of the volume probe.

[0006] However, the bending radius of existing flexible circuit boards is usually designed to be small. Under long-term repeated oscillation conditions, the stress on the flexible circuit board is concentrated at the bending position, which can easily lead to breakage at the bending position, causing the volume probe to fail, reducing the service life of the volume probe, increasing the user's operating costs and maintenance frequency, and making it difficult to meet the user's application needs for long-term use of the volume probe. Utility Model Content

[0007] This invention provides a volume probe to address the problem that existing flexible circuit boards typically have a small bending radius at the bend, leading to stress concentration at the bending location under long-term repeated oscillations. This can easily cause breakage at the bending location, resulting in volume probe failure, reduced lifespan, increased user costs and maintenance frequency, and difficulty in meeting users' long-term application needs for volume probes.

[0008] This utility model provides a volumetric probe, comprising: The base has a receiving cavity; A rotating shaft is disposed within the receiving cavity, and the rotating shaft is rotatably connected to the base. A sound head is fixedly connected to the rotating shaft, and the sound head is used to reciprocate with the rotating shaft; The flexible circuit board includes a first straight section, a first curved section, a second curved section, and a second straight section. One end of the first straight section is electrically connected to the acoustic head, and the other end of the first straight section is connected to one end of the first curved section. The other end of the first curved section is connected to one end of the second curved section, and the other end of the second curved section is connected to one end of the second straight section. The other end of the second straight section passes through the base and is electrically connected to the main unit of the ultrasonic device via a cable. The degree of curvature of the second curved section changes with the swing of the acoustic head. Both the first curved section and the second curved section are located away from the center line of the rotating shaft.

[0009] Beneficial effects: By defining the flexible circuit board as including a first straight portion, a first curved portion, a second curved portion, and a second straight portion, and by defining that both the first and second curved portions are located away from the center line of the rotating shaft, the second curved portion can deform with the swing of the first curved portion, thereby dispersing the pressure on the flexible circuit board. This avoids the situation where, when the second curved portion is located on the extension line of the center line of the rotating shaft, the bending of the second curved portion is limited, leading to stress concentration at the first curved portion and at the connection point between the first and second curved portions, causing the flexible circuit board to fail. In this embodiment, the volume probe can improve the uniformity of stress distribution and further improve the service life of the flexible circuit board, thereby achieving the technical effect of improving the service life of the volume probe.

[0010] In one alternative embodiment, the opening orientation of the first curved portion is opposite to that of the opening orientation of the second curved portion.

[0011] In one alternative embodiment, the opening of the first curved portion is oriented toward the sound head, and the opening of the second curved portion is oriented away from the sound head.

[0012] Beneficial effects: By defining the opening orientation of the first curved portion and the opening orientation of the second curved portion as opposite, the oscillation of the first curved portion can drive the oscillation of the second curved portion, allowing the second curved portion to adjust its bending amplitude significantly in accordance with the first curved portion. This improves the compliance of the flexible circuit board with the oscillation of the sound head, thereby achieving the technical effect of improving the reliability of the volumetric probe.

[0013] In one alternative embodiment, the radii of both the first and second curved portions are ≥4 mm.

[0014] Beneficial effects: By limiting the radii of both the first and second curved portions to ≥4mm, the bending radii of the first and second curved portions can be increased. This allows the bending amplitudes of the first and second curved portions to adapt to the swing amplitude of the sound head when the flexible circuit board swings with it. Compared to related technologies, the increased bending lengths of the first and second curved portions in this invention can disperse stress, preventing stress concentration, extending the service life of the flexible circuit board, and reducing user costs and maintenance frequency.

[0015] In one optional implementation, the volumetric probe includes: A fixing unit is connected to the base, and the second straight section is fixedly connected to the base through the fixing unit.

[0016] Beneficial effects: By setting up a fixing unit, the second straight section can be fixed on the base, thereby improving the reliability of the position limitation of the flexible circuit board.

[0017] In one alternative embodiment, the fixing unit is provided with a receiving cavity for receiving solid adhesive, so that the fixing unit is fixedly connected to the second straight portion by means of the solid adhesive.

[0018] In one optional implementation, the fixing unit includes: The base plate is provided with a first through groove, which is used to pass through the second straight section; The side plate is designed to be ring-shaped, and one end of the side plate is connected to the bottom plate; The top plate is connected to the base. The top plate is provided with a second through groove that communicates with the first through groove. The second through groove is used to pass through the second straight section. A receiving groove is formed between the first through groove and the second through groove. The top plate is connected to the other end of the side plate so that a receiving cavity is formed between the top plate, the side plate and the bottom plate. The top plate is provided with a glue-filling groove that communicates with the receiving cavity.

[0019] In one optional embodiment, the side plate is provided with an expansion groove communicating with the receiving cavity at one end near the bottom plate, and the solid adhesive is filled from the receiving cavity into the expansion groove so that the solid adhesive will not detach from the fixing unit during the swinging of the flexible circuit board.

[0020] In one alternative embodiment, the solid adhesive is a solid soft adhesive.

[0021] In one optional implementation, the volumetric probe includes: A limiting structure is connected to the sound head. The limiting structure has an arc-shaped protective surface, and the first curved portion runs along the protective surface of the limiting structure.

[0022] In one alternative embodiment, the thickness of the first curved portion or the thickness of the second curved portion is less than the thickness of the first straight portion or the thickness of the second straight portion. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the volume probe in this embodiment; Figure 2 This is a schematic diagram of the connection between the acoustic head, flexible circuit board, fixing unit, limiting structure and swing wheel in the volume probe of this embodiment; Figure 3 This is a cross-sectional view showing the flexible circuit board located in the center of the volume probe in this embodiment. Figure 4 This is a cross-sectional view of the flexible circuit board in the volume probe of this embodiment located at the first extreme position; Figure 5 This is a cross-sectional view of the flexible circuit board in the volume probe of this embodiment located at the second extreme position; Figure 6 This is a schematic diagram of the flexible circuit board structure in the volume probe of this embodiment; Figure 7 This is a schematic diagram of the fixed unit in the volume probe of this embodiment; Figure 8 This is a schematic diagram of the drive unit in the volume probe of this embodiment. Figure 1 ; Figure 9This is a schematic diagram of the drive unit in the volume probe of this embodiment. Figure 2 .

[0025] Explanation of reference numerals in the attached figures: 1. Base; 2. Head; 3. Flexible circuit board; 301. First straight section; 302. First bent section; 303. Second bent section; 304. Second straight section; 4. Fixing unit; 401. Base plate; 402. Side plate; 403. Top plate; 4031. Glue filling tank; 404. Expansion tank; 5. Rotating shaft; 6. Limiting structure; 7. Swing wheel; 8. Base; 9. Drive structure; 10. First synchronous pulley; 11. Second synchronous pulley; 12. Synchronous belt; 13. First rotating wheel; 14. Second rotating wheel; 15. Rotating rod; 16. Connecting structure; 17. First limiting structure; 18. Second limiting structure. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0027] The following is combined with Figures 1 to 9 The following describes embodiments of the present invention.

[0028] According to an embodiment of the present invention, in one aspect, a volumetric probe is provided, comprising: Base 1, with a receiving cavity; A rotating shaft 5 is located inside the receiving cavity and is rotatably connected to the base 1. The sound head 2 is fixedly connected to the rotating shaft 5, and the sound head 2 is used to reciprocate with the rotating shaft 5. The flexible circuit board 3 includes a first straight section 301, a first curved section 302, a second curved section 303, and a second straight section 304. One end of the first straight section 301 is electrically connected to the sound head 2, and the other end of the first straight section 301 is connected to one end of the first curved section 302. The other end of the first curved section 302 is connected to one end of the second curved section 303, and the other end of the second curved section 303 is connected to one end of the second straight section 304. The other end of the second straight section 304 passes through the base 1 and is electrically connected to the main unit of the ultrasonic device via a cable. The degree of curvature of the second curved section 303 changes with the swing of the sound head 2. Both the first curved section 302 and the second curved section 303 are located away from the center line of the rotating shaft 5.

[0029] In this embodiment of the volume probe, by defining the flexible circuit board 3 as including a first straight portion 301, a first curved portion 302, a second curved portion 303, and a second straight portion 304, and defining that the first curved portion 302 and the second curved portion 303 are both located away from the center line of the rotating shaft 5, the second curved portion 303 can deform with the swing of the first curved portion 302, thereby dispersing the pressure on the flexible circuit board 3. This avoids the situation where, when the second curved portion 303 is located on the extension line of the center line of the rotating shaft 5, the bending of the second curved portion 303 is limited, resulting in stress concentration at the first curved portion 302 and at the connection position between the first curved portion 302 and the second curved portion 303, causing the flexible circuit board 3 to fail. The volume probe in this embodiment can improve the uniformity of stress distribution and further improve the service life of the flexible circuit board 3, thereby achieving the technical effect of improving the service life of the volume probe.

[0030] Here, the centerline of rotating shaft 5 refers to the axis of rotating shaft 5, that is, the centerline of rotating shaft 5 along... Figure 1 The direction is set parallel to the X-axis as shown.

[0031] Furthermore, in this embodiment, the thickness of the first curved portion 302 or the thickness of the second curved portion 303 is less than the thickness of the first straight portion 301 or the thickness of the second straight portion 304. That is, the thickness of the first curved portion 302 is less than the thickness of the first straight portion 301 and also less than the thickness of the second straight portion 304, and the thickness of the second curved portion 303 is less than the thickness of the first straight portion 301 and also less than the thickness of the second straight portion 304.

[0032] The first curved portion 302 and the second curved portion 303 can be single-layer plates, and the first straight portion 301 and the second straight portion 304 can be two-layer plates, with each layer having the same thickness.

[0033] By reducing the thickness of the first bending portion 302 and the second bending portion 303, the flexibility of the first bending portion 302 and the second bending portion 303 can be improved, reducing the possibility of the flexible circuit board 3 breaking and failing, thereby achieving the technical effect of improving the reliability of the volume probe.

[0034] Preferably, the flexible circuit board 3 has at least two pieces, and the two first straight sections 301 and the two second straight sections 304 in adjacent flexible circuit boards 3 are fixedly connected. The specific method of fixing is not limited; it can be adhesive bonding. Based on this, the connection strength between the two flexible circuit boards 3 can be increased, thereby achieving the technical effect of improving the reliability of the volumetric probe.

[0035] Of course, in other embodiments, the connection method between adjacent flexible circuit boards 3 may be adjusted according to the different designs of the volume probe, such as detachable connection, all of which are within the protection scope of this utility model.

[0036] In other embodiments, depending on the design of the volume probe, the number of plates in the first curved portion 302, the second curved portion 303, the first straight portion 301, and the second straight portion 304 can be adjusted. As long as the thickness of the first curved portion 302 or the thickness of the second curved portion 303 is less than the thickness of the first straight portion 301 or the thickness of the second straight portion 304, it is within the protection scope of this utility model.

[0037] Furthermore, in this embodiment, the opening orientation of the first curved portion 302 is opposite to that of the second curved portion 303. Based on this, the swinging of the first curved portion 302 can drive the swinging of the second curved portion 303, allowing the second curved portion 303 to adjust its bending amplitude significantly in accordance with the first curved portion 302. This improves the responsiveness of the flexible circuit board 3 as the sound head 2 swings, thereby achieving the technical effect of improving the reliability of the volume probe.

[0038] In this embodiment, the opening of the first curved portion 302 is arranged facing the sound head 2, and the opening of the second curved portion 303 is arranged away from the sound head 2.

[0039] Furthermore, the radii of both the first bending portion 302 and the second bending portion 303 are ≥4mm, which increases the bending radii of the first bending portion 302 and the second bending portion 303. This allows the bending amplitude of the first bending portion 302 and the bending amplitude of the second bending portion 303 to adapt to the swing amplitude of the sound head 2 when the flexible circuit board 3 swings with the sound head 2. Compared with related technologies, the increased bending length of the first bending portion 302 and the second bending portion 303 in this embodiment can disperse stress, avoid stress concentration, improve the service life of the flexible circuit board 3, and reduce user operating costs and maintenance frequency.

[0040] Of course, in other embodiments, the orientation of the opening of the first curved portion 302 and the opening of the second curved portion 303 may be adjusted depending on the design of the volume probe.

[0041] In other embodiments, the radii of the first curved portion 302 and the second curved portion 303 are adjusted according to the different designs of the volume probe.

[0042] In addition, combined Figures 3 to 5 , Figure 7 As shown, in this embodiment, the volume probe includes: The fixing unit 4 is connected to the base 1, and the second straight part 304 is fixedly connected to the base 1 through the fixing unit 4.

[0043] By setting the fixing unit 4, the second straight part 304 can be fixed on the base 1, thereby improving the reliability of the position limitation of the flexible circuit board 3.

[0044] Preferably, the fixing unit 4 and the base 1 are detachably connected by screws. This improves the ease of replacing both the fixing unit 4 and the base 1.

[0045] Of course, in other embodiments, depending on the design of the volume probe, the connection method between the fixing unit 4 and the base 1 can be adjusted. For example, the fixing unit 4 and the base 1 can be fixedly connected, or the detachable connection method between the fixing unit 4 and the base 1 can be adjusted. For example, the fixing unit 4 and the base 1 can be connected by bolts or threads or by snap-fit ​​connection. Snap-fit ​​connection is a mature technology and will not be elaborated on here.

[0046] As an alternative implementation, the volume probe may not include the fixing unit 4, in which case the method of fixing the position of the second linear portion 304 can be adjusted.

[0047] In this embodiment, the fixing unit 4 and the second linear portion 304 are fixedly connected by solid adhesive. Of course, in other embodiments, the connection method between the fixing unit 4 and the second linear portion 304 may be adjusted according to the different designs of the volume probe. As long as the connection between the fixing unit 4 and the second linear portion 304 can be achieved, it is within the protection scope of this utility model.

[0048] Combination Figure 3 As shown, in this embodiment, the fixing unit 4 is provided with a receiving cavity for containing solid adhesive, so that the fixing unit 4 and the second straight part 304 are fixedly connected by the solid adhesive.

[0049] Of course, in other embodiments, depending on the design of the volume probe, the fixing unit 4 may not have a receiving cavity, and the connecting surface between the fixing unit 4 and the second straight portion 304 may be coated with solid adhesive to connect and fix the fixing unit 4 and the second straight portion 304. Compared with other embodiments, the receiving cavity in this embodiment can increase the amount of solid adhesive, thereby achieving the technical effect of improving the sealing reliability between the fixing unit 4 and the second straight portion 304.

[0050] In addition, combined Figure 7 As shown, in this embodiment, the fixing unit 4 includes: The base plate 401 is provided with a first through groove, which is used to pass through the second straight section 304; Side plate 402 is designed to be ring-shaped, and one end of side plate 402 is connected to bottom plate 401; The top plate 403 is connected to the base 1. The top plate 403 is provided with a second through groove that communicates with the first through groove. The second through groove is used to pass through the second straight section 304. A receiving groove is formed between the first through groove and the second through groove. The top plate 403 is connected to the other end of the side plate 402 so that a receiving cavity is formed between the top plate 403, the side plate 402 and the bottom plate 401. The top plate 403 is provided with a glue-filling groove 4031 that communicates with the receiving cavity.

[0051] Among them, combined Figure 7 As shown, the base plate 401 is located below the top plate 403. The top plate 403 has a through hole, and the base 1 has a threaded hole. Bolts are threaded through the through hole and threadedly connected to the threaded hole on the base 1 to realize the connection between the top plate 403 and the base 1.

[0052] Meanwhile, the base plate 401 and the side plate 402, as well as the top plate 403 and the side plate 402, are integrated into one unit. This achieves the technical effect of improving the reliability of the connection between the base plate 401 and the side plate 402, and between the top plate 403 and the side plate 402.

[0053] Of course, in other embodiments, the connection methods between the bottom plate 401 and the side plate 402, and between the top plate 403 and the side plate 402, can be adjusted depending on the design of the volume probe.

[0054] As an alternative implementation, the detachable connection between the base plate 401 and the base 1 can be adjusted. For example, both the base plate 401 and the base 1 may have threaded holes, or the base plate 401 and the base 1 may be fixedly connected. All of these are within the protection scope of this utility model.

[0055] Of course, in other embodiments, the structure of the fixing unit 4 is adjusted. For example, the fixing unit 4 includes a side plate 402 and a bottom plate 401. Compared with other embodiments, the fixing unit 4 in this embodiment, by providing a top plate 403, can increase the number of fixing points for the solid adhesive, preventing the solid adhesive from flowing out and affecting the connection stability between the fixing unit 4 and the second straight section 304. This ensures that the solid adhesive will not detach from the fixing unit 4 during the swinging process of the flexible circuit board 3, thereby improving the reliability of the connection between the fixing unit 4 and the second straight section 304. At the same time, the top plate 403 can increase the connection area between the solid adhesive and the fixing unit 4, and also limit the position of the solid adhesive to prevent it from falling off, thereby achieving the technical effect of improving the connection reliability between the fixing unit 4 and the second straight section 304.

[0056] Preferably, the length of the first through groove is greater than the length of the second through groove, and the width of the first through groove is greater than the width of the second through groove. Here, length refers to the length parallel to... Figure 7 The dimension along the Y-axis, specifically the width, refers to the dimension parallel to the x-axis. Figure 7The dimensions in the X-axis direction are considered. Based on this, the ease with which the second straight section 304 passes through the first through slot is increased, thereby improving the ease of manufacturing the volume probe. Simultaneously, the dimensional relationship between the first and second through slots improves the ease with which solid adhesive is poured from the first through slot into the second through slot, thus improving the ease of solid adhesive pouring.

[0057] Of course, in other embodiments, the relationship between the length of the first channel and the length of the second channel, as well as the relationship between the width of the first channel and the width of the second channel, can be adjusted depending on the design of the volume probe.

[0058] As an alternative implementation, it is also possible to limit only the length of the first channel to be greater than the length of the second channel, or to limit only the width of the first channel to be greater than the width of the second channel.

[0059] In addition, combined Figure 7 As shown, in this embodiment, the side plate 402 is provided with an expansion groove 404 that communicates with the receiving cavity at one end near the bottom plate 401. Solid adhesive is filled from the receiving cavity into the expansion groove 404 so that the solid adhesive will not detach from the fixing unit 4 during the swinging process of the flexible circuit board 3.

[0060] Based on this, by setting the expansion groove 404, not only can the amount of solid adhesive be increased, thereby achieving the technical effect of improving the connection reliability between the second straight part 304 and the fixed unit 4, but also the connection reliability between the flexible circuit board 3 and the fixed unit 4 during the swing process can be increased, thereby achieving the technical effect of improving the stability of the volume probe in use.

[0061] Of course, in other embodiments, depending on the design of the volume probe, the position of the expansion slot 404 may be adjusted, or the expansion slot 404 may not be provided, all of which are within the protection scope of this utility model.

[0062] Furthermore, preferably, the solid adhesive is a solid soft adhesive, such as silicone.

[0063] Of course, in other embodiments, depending on the design of the volume probe, the solid adhesive can be a solid hard adhesive, such as epoxy resin. Compared to other embodiments, the solid soft adhesive in this embodiment allows the second straight portion 304 to oscillate slightly with the sound head 2, thereby reducing the bending stress of the flexible circuit board 3, thus improving the service life of the flexible circuit board 3, and ultimately achieving the technical effect of reducing the bending stress of the volume probe.

[0064] In other embodiments, depending on the design of the volume probe, or alternatively, the solid adhesive may be a combination of solid soft adhesive and solid hard adhesive. Figure 6The upper half of the second straight section 304 is connected to the fixing unit 4 via solid soft adhesive, and the lower half of the second straight section 304 is connected to the fixing unit 4 via solid hard adhesive. Compared to other embodiments where solid hard adhesive is poured in and cured, followed by solid soft adhesive and then cured, this embodiment only requires the time for solid soft adhesive pouring and curing, reducing manufacturing processes and time, thereby achieving the technical effect of reducing the manufacturing cost and time of the volume probe.

[0065] In addition, combined Figures 3 to 5 As shown, in this embodiment, the volume probe includes: The limiting structure 6 is connected to the sound head 2. The limiting structure 6 has an arc-shaped protective surface, and the first curved part 302 runs along the protective surface of the limiting structure 6.

[0066] By setting the limiting structure 6, the number of connection points of the flexible circuit board 3 can be increased, avoiding excessive bending of the flexible circuit board 3 and affecting the connection reliability between the flexible circuit board 3 and the sound head 2, thereby achieving the technical effect of improving the positional reliability of the flexible circuit board 3.

[0067] In this embodiment, the limiting structure 6 is detachably connected to the head 2 via screws.

[0068] Specifically, in combination Figures 3 to 5 As shown, the flexible circuit board 3 has two extreme positions, namely the first straight portion 301 and the first curved portion 302, which rotate to the position where... Figure 5 The leftmost first extreme position, and the first straight portion 301 and the first curved portion 302 rotate to the position located Figure 4 The second extreme position on the rightmost side. The flexible circuit board 3 passes through the first extreme position. Figure 3 The flexible circuit board 3 gradually swings from the center position to the second extreme position. During this process, since the position of the second straight part 304 is fixed, the degree of bending of the second curved part 303 changes as the flexible circuit board 3 swings with the sound head 2, so that the flexible circuit board 3 can adapt to the swinging of the sound head 2.

[0069] Of course, in other embodiments, depending on the design of the volume probe, the connection between the limiting structure 6 and the sound head 2 can be adjusted, for example, a fixed connection, or a detachable connection between the limiting structure 6 and the sound head 2.

[0070] In addition, combined Figure 8 and Figure 9 As shown, in this embodiment, the volume probe includes: The drive unit, connected to the sound head 2, is used to drive the sound head 2 to rotate and swing around the rotating shaft 5.

[0071] The drive unit includes: The swing wheel 7 is sleeved on the rotating shaft 5 and connected to the sound head 2; Base 8 is connected and fixed to base 1; Drive structure 9 is mounted on base 8; The first synchronous pulley 10 is key-connected to the drive structure 9, and the first synchronous pulley 10 rotates as the drive structure 9 rotates; The second synchronous pulley 11 is connected to the inner wall of the receiving cavity via the first shaft; The timing belt 12 has one end engaged with the first timing pulley 10 and the other end engaged with the second timing pulley 11, so that the rotation of the first timing pulley 10 drives the rotation of the second timing pulley 11 through the timing belt 12. The first rotating wheel 13 is rotatably connected to the inner wall of the receiving cavity via the second shaft, and is positioned above the first synchronous wheel 10 and the second synchronous wheel 11; The second rotating wheel 14 is rotatably connected to the inner wall of the receiving cavity via a third shaft and is positioned above the first synchronous wheel 10 and the second synchronous wheel 11. Rotating rod 15 is coaxially connected to the first shaft; The connecting structure 16 is a rope-like structure, such as a non-elastic rope like a steel wire rope. The connecting structure 16 is wound around the storage groove of the rotating rod 15, and one end of the connecting structure 16 is wound around the first rotating wheel 13 and connected to the arc surface of the swing wheel 7; the other end of the connecting structure 16 is wound around the second rotating wheel 14 and connected to the arc surface of the swing wheel 7, so that the rotation and swing of the rotating rod 15 is driven by the rotation and swing of the second synchronous wheel 11, which in turn drives the movement of both ends of the connecting structure 16. When one end of the connecting structure 16 shortens and the other end of the connecting structure 16 extends, the connecting structure 16 moves towards the first extreme position. When one end of the connecting structure 16 extends and the other end of the connecting structure 16 shortens, the connecting structure 16 moves towards the second extreme position, so that one end of the connecting structure 16 and the other end of the connecting structure 16 drive the swing wheel 7 to swing back and forth, which in turn drives the sound head 2 to swing back and forth.

[0072] In this embodiment, the swing wheel 7 is integrally connected with the rotating shaft 5, and the rotating shaft 5 is connected to the base 1 via a bearing, so that the rotating shaft 5 is rotatably connected to the base 1. Of course, in other embodiments, depending on the design of the volume probe, the swing wheel 7 and the rotating shaft 5 may be fixedly connected.

[0073] Furthermore, combined Figure 8 As shown, in this embodiment, the driving unit includes: The first limiting structure 17 is connected to the base 1; The second limiting structure 18 is a protrusion and is provided on the swing wheel 7. There are two second limiting structures 18, which are provided on both sides of the first limiting structure 17. When the swing wheel 7 swings to the first limit position, a second limiting structure 18 is directly engaged with the first limiting structure 17. Under the limitation of the first limiting structure 17, the swing wheel 7 cannot continue to rotate. Similarly, when the swing wheel 7 swings to the second limit position, another second limiting structure 18 is engaged with the first limiting structure 17. Under the limitation of the second limiting structure 18, the swing wheel 7 cannot continue to rotate.

[0074] Based on this, the two extreme positions of the sound head 2 are limited, thereby achieving the technical effect of improving the reliability of the volume probe.

[0075] Of course, in other embodiments, the specific structures of the first limiting structure 17 and the second limiting structure 18 may be adjusted depending on the design of the volume probe. Alternatively, the volume probe may not include the first limiting structure 17 and the second limiting structure 18.

[0076] In other embodiments, the connection between the first synchronous wheel 10 and the drive structure 9 is adjusted according to the different designs of the volume probe, for example, the first synchronous wheel 10 and the drive structure 9 are fixedly connected.

[0077] As an alternative implementation, the rotating rod 15 may not be provided, and the connecting structure 16 may be directly wound around the first shaft.

[0078] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A volumetric probe, characterized in that, include: The base (1) is provided with a receiving cavity; A rotating shaft (5) is disposed in the receiving cavity, and the rotating shaft (5) is rotatably connected to the base (1); The sound head (2) is fixedly connected to the rotating shaft (5), and the sound head (2) is used to reciprocate with the rotating shaft (5); The flexible circuit board (3) includes a first straight section (301), a first curved section (302), a second curved section (303), and a second straight section (304); one end of the first straight section (301) is electrically connected to the sound head (2), the other end of the first straight section (301) is connected to one end of the first curved section (302), the other end of the first curved section (302) is connected to one end of the second curved section (303), the other end of the second curved section (303) is connected to one end of the second straight section (304), the other end of the second straight section (304) passes through the base (1) and is electrically connected to the host of the ultrasonic device through a cable, and the degree of curvature of the second curved section (303) changes with the swing of the sound head (2); the first curved section (302) and the second curved section (303) are both located away from the center line of the rotating shaft (5).

2. The volumetric probe according to claim 1, characterized in that, The opening orientation of the first curved portion (302) is opposite to that of the opening orientation of the second curved portion (303).

3. The volumetric probe according to claim 2, characterized in that, The opening of the first curved portion (302) is arranged in the direction facing the sound head (2), and the opening of the second curved portion (303) is arranged in the direction away from the sound head (2).

4. The volumetric probe according to claim 3, characterized in that, The radii of the first curved portion (302) and the second curved portion (303) are both ≥4mm.

5. The volumetric probe according to claim 4, characterized in that, The volumetric probe includes: The fixing unit (4) is connected to the base (1), and the second straight part (304) is fixedly connected to the base (1) through the fixing unit (4).

6. The volumetric probe according to claim 5, characterized in that, The fixing unit (4) is provided with a receiving cavity for receiving solid adhesive, so that the fixing unit (4) and the second straight part (304) are fixedly connected by the solid adhesive.

7. The volumetric probe according to claim 6, characterized in that, The fixing unit (4) includes: The base plate (401) is provided with a first through groove, which is used to pass through the second straight section (304). The side plate (402) is designed to be annular, and one end of the side plate (402) is connected to the bottom plate (401); The top plate (403) is connected to the base (1). The top plate (403) is provided with a second through groove that communicates with the first through groove. The second through groove is used to pass through the second straight part (304). A receiving groove is formed between the first through groove and the second through groove. The top plate (403) is connected to the other end of the side plate (402) so that a receiving cavity is formed between the top plate (403), the side plate (402) and the bottom plate (401). The top plate (403) is provided with a glue-filling groove (4031) that communicates with the receiving cavity.

8. The volumetric probe according to claim 7, characterized in that, The side plate (402) is provided with an expansion groove (404) at one end near the bottom plate (401) that communicates with the receiving cavity. The solid adhesive is filled from the receiving cavity into the expansion groove (404) so ​​that the solid adhesive will not detach from the fixing unit (4) during the swinging process of the flexible circuit board (3).

9. The volumetric probe according to claim 8, characterized in that, The solid adhesive is a solid soft adhesive.

10. The volumetric probe according to any one of claims 1-9, characterized in that, The volumetric probe includes: The limiting structure (6) is connected to the sound head (2). The limiting structure (6) has an arc-shaped protective surface, and the first curved part (302) runs along the protective surface of the limiting structure (6).

11. The volumetric probe according to any one of claims 1-9, characterized in that, The thickness of the first curved portion (302) or the thickness of the second curved portion (303) is less than the thickness of the first straight portion (301) or the thickness of the second straight portion (304).

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