Rotating scanning imaging assembly and rotating scanning imaging apparatus

Abstract

This invention provides a rotating scanning imaging component and a rotating scanning imaging device. The rotating scanning imaging component includes a transducer and a cylindrical spring. The transducer is covered by a cylindrical shell, forming an integrated cylindrical transducer component. The cylindrical spring is connected to one end of the integrated transducer component, allowing the integrated transducer component to rotate with the cylindrical spring. By covering the transducer with a cylindrical shell, collisions with the inner wall of the conduit are avoided during the transducer's rotation, thus ensuring more accurate image signals obtained through the transducer. The integrated cylindrical transducer component, formed by the cylinder and transducer and connected to the cylindrical spring, ensures a more uniform speed during rotation with the cylindrical spring, thereby preventing image distortion.

Description

Technical Field

[0001] This utility model relates to the field of ultrasound imaging, and in particular to a rotating scanning imaging component and a rotating scanning imaging device. Background Technology

[0002] Rotating scanning imaging devices are used in various fields such as medical diagnosis, treatment, and ultrasonic flaw detection. However, in existing rotating scanning imaging devices, the transducer is prone to collision with the catheter during rotation, generating significant friction. This friction not only increases transducer noise, resulting in a poor signal-to-noise ratio in the obtained image signal, but also causes errors in the torque transmitted by the spring, leading to image distortion. Therefore, rotating scanning imaging devices still need improvement. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the defect that the transducer in the existing rotating scanning imaging device is prone to collision with the duct during rotation, and to provide a rotating scanning imaging component and a rotating scanning imaging device.

[0004] The present invention solves the above-mentioned technical problems through the following technical solution:

[0005] In a first aspect, a rotating scanning imaging assembly is provided, the rotating scanning imaging assembly including a transducer and a cylindrical spring;

[0006] The transducer is covered by a cylindrical shell, and the transducer and the cylindrical shell form a cylindrical integrated transducer assembly.

[0007] The cylindrical spring is connected to one end of the integrated transducer assembly, causing the integrated transducer assembly to rotate along with the cylindrical spring.

[0008] Optionally, the acoustic center of the transducer substantially coincides with the cylindrical center of the integrated transducer assembly.

[0009] Optionally, the overlap error between the acoustic center of the transducer and the cylindrical center of the integrated transducer assembly is less than or equal to 0.1 mm.

[0010] Optionally, the inner diameter of the cylindrical spring is greater than or equal to the outer diameter of the integrated transducer assembly;

[0011] And / or,

[0012] The distance between the transducer and the cylindrical spring is greater than or equal to the wavelength of the transducer at the center frequency;

[0013] And / or,

[0014] The cylindrical spring is bonded to the integrated transducer assembly;

[0015] And / or,

[0016] The cylindrical outer shell is wrapped around the outside of the transducer by casting or hot pressing.

[0017] Optionally, the other end of the cylindrical integrated transducer assembly is provided with a rotating positioning post, which is substantially coaxial with the integrated transducer assembly.

[0018] Optionally, the coaxial error between the rotating positioning column and the integrated transducer assembly is less than or equal to 0.1 mm;

[0019] And / or,

[0020] The rotary positioning column is formed by casting or hot pressing.

[0021] And / or,

[0022] The axial length of the rotary positioning column is less than or equal to 5 mm;

[0023] And / or,

[0024] The outer diameter of the rotating positioning column is less than or equal to 0.3 mm.

[0025] In a second aspect, a rotating scanning imaging device is provided, the rotating scanning imaging device including a rotating scanning imaging component and a cylindrical conduit; the cylindrical conduit is used to accommodate the rotating scanning imaging component;

[0026] The rotating scanning imaging assembly includes a transducer and a cylindrical spring;

[0027] The transducer is covered by a cylindrical shell, and the transducer and the cylindrical shell form a cylindrical integrated transducer assembly.

[0028] The cylindrical spring is connected to one end of the integrated transducer assembly, so that the integrated transducer assembly rotates in the cylindrical conduit along with the cylindrical spring.

[0029] Optionally, the other end of the integrated transducer assembly is provided with a rotary positioning column;

[0030] A cylindrical stator is provided at a predetermined position inside the cylindrical conduit;

[0031] The cylindrical stator has a rotating hole at its center to accommodate the rotating positioning post, allowing the rotating positioning post to rotate freely through the rotating hole.

[0032] Optionally, the ratio of the axial length of the stator to the axial length of the rotary positioning column is 0.5 to 0.9.

[0033] Optionally, the difference between the outer diameter of the rotating scanning imaging component and the inner diameter of the cylindrical conduit is in the range of 0.1 mm to 0.2 mm.

[0034] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of this utility model.

[0035] The positive and progressive effects of this utility model are as follows: by covering the transducer with a cylindrical shell, the transducer and the cylindrical shell form a cylindrical integrated transducer assembly. This avoids collisions with the inner wall of the conduit during the rotation of the transducer, thereby eliminating friction between the transducer and the inner wall of the conduit. This makes the image signal obtained by the transducer more accurate. Furthermore, by forming the cylindrical shell transducer into a cylindrical integrated transducer assembly and connecting it with a cylindrical spring, the speed of the integrated transducer assembly is more uniform during the rotation of the cylindrical spring, thereby avoiding image distortion. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of a prior art rotating scanning imaging component provided for Embodiment 1 of this utility model.

[0037] Figure 2 This is a schematic diagram of a rotating scanning imaging component provided in Embodiment 1 of this utility model.

[0038] Figure 3 This is a schematic diagram of a rotating positioning column in a rotating scanning imaging assembly provided in Embodiment 1 of this utility model.

[0039] Figure 4 This is a schematic diagram of a rotating scanning imaging device provided in Embodiment 2 of this utility model. Detailed Implementation

[0040] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0041] In this embodiment of the invention, prefixes such as "first" and "second" are used merely to distinguish different descriptive objects and do not limit the position, order, priority, quantity, or content of the described objects. The use of ordinal numbers and other prefixes to distinguish descriptive objects in this embodiment of the invention does not constitute a limitation on the described objects. The description of the described objects is given in the context of the embodiments, and the use of such prefixes should not constitute unnecessary restrictions. Furthermore, in the description of this embodiment, unless otherwise stated, "multiple" means two or more.

[0042] Example 1

[0043] Before describing the rotating scanning imaging component provided in Embodiment 1 of this utility model, let's first introduce the rotating scanning imaging component in the prior art. Figure 1 This is a schematic diagram of a prior art rotating scanning imaging assembly provided in Embodiment 1 of this utility model. The arrows in the figure indicate the rotation direction of the rotating scanning imaging assembly 10. The rotating scanning imaging assembly 10 includes a transducer 11 and a spring 12. The transducer 11 is directly mounted on the front end of the spring 12, and the spring 12 also supports the transducer 11. Thus, when an external retraction control device drives the spring 12 to rotate, the torque of the spring 12 is transmitted to the transducer 11, causing the transducer 11 to rotate within the cylindrical conduit 13 and send and receive the required signal data. The signal data is then transmitted to an external display via electrode wires 14 for display.

[0044] Since the transducer 11 in the prior art is directly mounted on the front end of the spring 12, and the spring 12 is also used to support the transducer 11, the transducer 11 is very likely to come into contact with the cylindrical conduit 13 and generate friction during rotation.

[0045] Therefore, to avoid excessive friction caused by the transducer colliding with the cylindrical catheter during rotation in a rotating scanning imaging device, Embodiment 1 of this utility model provides a rotating scanning imaging component. Preferably, this rotating scanning imaging component is applied to a piezoelectric ultrasound probe, and its application scenarios include interventional ultrasound such as cardiac interventional ultrasound and transesophageal ultrasound. Figure 2 This is a schematic diagram of a rotating scanning imaging assembly provided in Embodiment 1 of the present invention. The rotating scanning imaging assembly includes a transducer 11 and a cylindrical spring 22; the transducer 11 is covered by a cylindrical shell 21, and the transducer 11 and the cylindrical shell 21 form a cylindrical integrated transducer assembly; the cylindrical spring 22 is connected to one end of the integrated transducer assembly, so that the integrated transducer assembly rotates with the cylindrical spring 22.

[0046] It should be noted that the rotating scanning imaging component can be a single-element rotating scanning imaging component, and the transducer 11 can be a single-element transducer. The shape of the transducer 11 can be square, rectangular, or any other arbitrary shape. The cylindrical shell 21 is made of acoustically transparent epoxy material so that the attenuation coefficient of the ultrasonic signal propagation is less than or equal to 0.5 dB / mm·MHz (dB / mm·MHz, decibel / mm·megahertz). Furthermore, the distance from any point on the cylindrical shell 21 to the radiating surface of the transducer 11 is less than or equal to 0.2 mm.

[0047] In this embodiment, by encasing the transducer in a cylindrical shell, the transducer and the cylindrical shell form a cylindrical integrated transducer assembly. This avoids collisions between the transducer and the inner wall of the cylindrical conduit during rotation, thereby eliminating friction between the transducer and the inner wall of the cylindrical conduit. This results in more accurate image signals obtained through the transducer. Furthermore, by forming a cylindrical integrated transducer assembly with the cylindrical shell and connecting it to a cylindrical spring, the torque transmission between the cylindrical spring and the transducer becomes more precise. This ensures a more uniform speed for the integrated transducer assembly as it rotates with the cylindrical spring, preventing image distortion and improving image performance. In addition, by optimizing the connection between the transducer and the spring from a direct connection to a connection via a cylindrical shell, and by also designing the spring as cylindrical, the overall structural shape is unified, torque transmission efficiency and accuracy are improved, and the operating feel is improved to some extent. This results in more stable rotational damping, ensuring stable rotational speed and eliminating image distortion caused by variations in rotational speed due to different damping.

[0048] In one embodiment, the acoustic center of transducer 11 substantially coincides with the cylindrical center of the integrated transducer assembly. Preferably, the coincidence error is less than or equal to 0.1 mm.

[0049] It should be noted that the acoustic center represents the virtual origin of the transducer for transmitting or receiving sound waves.

[0050] In this embodiment, when the acoustic center is substantially coincident with the cylindrical center of the integrated transducer component, specifically when the coincidence error is less than or equal to 0.1 mm, the sound field of the transducer during rotation can approach an axisymmetric mode, thereby making the ultrasonic signal distribution more uniform and thus making the received ultrasonic signal more accurate.

[0051] In one embodiment, the inner diameter of the cylindrical spring 22 is greater than or equal to the outer diameter of the integrated transducer assembly.

[0052] In this embodiment, setting the inner diameter of the cylindrical spring to be greater than or equal to the outer diameter of the integrated transducer assembly makes it easier to connect the cylindrical spring to the integrated transducer assembly.

[0053] In one embodiment, the distance between the transducer 11 and the cylindrical spring 22 is greater than or equal to the wavelength of the transducer 11 at its center frequency.

[0054] In this embodiment, since the spring can also reflect the ultrasonic waves emitted by the transducer, spring artifacts will always appear in the obtained image. Therefore, the cylindrical spring is connected to the cylindrical shell so that it is not directly connected to the transducer, and the distance between the transducer 1 and the cylindrical spring is greater than or equal to the wavelength of the transducer at its center frequency. In this way, the cylindrical spring will not reflect the ultrasonic waves emitted by the transducer, thus preventing the presence of spring artifacts in the obtained image and improving the quality of the acquired image.

[0055] In one embodiment, the cylindrical spring 22 is bonded to the integrated transducer assembly.

[0056] Preferably, a notch can be provided at a preset position on the integrated transducer assembly. The width of the notch is equal to the outer diameter of the cylindrical spring, so that the cylindrical spring can be adhered to the notch, thereby making the connection between the cylindrical spring and the integrated transducer assembly more secure. It should be noted that the preset position can be set according to the actual situation.

[0057] In this embodiment, the cylindrical spring is bonded to the integrated transducer assembly to make the connection between the cylindrical spring 22 and the integrated transducer assembly more secure, thereby enabling the cylindrical spring to better drive the integrated transducer assembly to rotate.

[0058] In one embodiment, the cylindrical outer shell 21 is wrapped around the outside of the transducer 11 by casting or hot pressing.

[0059] In this embodiment, the cylindrical shell is wrapped around the transducer by casting or hot pressing, which can achieve seamless integration between the transducer and the shell. This avoids the transducer shaking inside the cylindrical shell during rotation, thus making the transmission / reception of the transducer's sound waves more stable.

[0060] In one embodiment, such as Figure 3 As shown, the other end of the cylindrical integrated transducer assembly is provided with a rotating positioning post 31, which is substantially coaxial with the integrated transducer assembly. Preferably, the coaxial error between the rotating positioning post 31 and the integrated transducer assembly is less than or equal to 0.1 mm.

[0061] The rotary positioning column is generally made of metal, such as stainless steel or brass, but it can also be made of rigid non-metallic materials, such as ABS (Acrylonitrile Butadiene Styrene plastic).

[0062] In this embodiment, the rotating positioning column and the integrated transducer are basically coaxial. Specifically, the coaxial error between the rotating positioning column 31 and the integrated transducer is less than or equal to 0.1 mm, which can make the integrated transducer and the rotating positioning column rotate coaxially. This avoids the rotating positioning column and the integrated transducer from affecting each other during the rotation process, causing the rotation of the integrated transducer to tilt and resulting in friction between it and the cylindrical conduit.

[0063] In one embodiment, the rotary positioning column 31 is formed by casting or hot pressing.

[0064] In this embodiment, the rotary positioning post is connected to the cylindrical shell by casting or hot pressing, which allows for better integration of the rotary positioning post with the cylindrical shell and avoids the phenomenon of the rotary positioning post detaching from the cylindrical shell during rotation.

[0065] In one embodiment, the axial length of the rotary positioning post 31 is less than or equal to 5 mm.

[0066] In this embodiment, since the rotating scanning imaging component needs to be placed after the cylindrical catheter for ultrasound access, setting the axial length of the rotating positioning column to be less than or equal to 5 mm allows it to be placed in the cylindrical catheter.

[0067] In one embodiment, the outer diameter of the rotating positioning post 31 is less than or equal to 0.3 mm.

[0068] In this embodiment, since the rotating scanning imaging component needs to be placed after the cylindrical catheter for ultrasound access, the outer diameter of the rotating positioning column is less than or equal to 0.3 mm, which allows it to be placed in the cylindrical catheter.

[0069] Example 2

[0070] This utility model also provides an embodiment of a rotating scanning imaging device. Figure 4This is a schematic diagram of a rotating scanning imaging device according to Embodiment 2 of the present invention. The rotating scanning imaging device includes a rotating scanning imaging component and a cylindrical conduit 13. The cylindrical conduit 133 is used to house the rotating scanning imaging component. The rotating scanning imaging component includes a transducer 11 and a cylindrical spring 22. The transducer 11 is externally covered by a cylindrical shell, forming a cylindrical integrated transducer component with the cylindrical shell. The cylindrical spring 22 is connected to one end of the integrated transducer component, causing the integrated transducer component to rotate within the cylindrical conduit 13 along with the cylindrical spring 22.

[0071] In this embodiment, using the rotating scanning imaging device for ultrasound access can make the obtained image signal more accurate and avoid image distortion.

[0072] In one embodiment, the other end of the integrated transducer assembly is provided with a rotating positioning post 31; a cylindrical stator 41 is provided at a preset position inside the cylindrical conduit 13; the center of the cylindrical stator 41 is provided with a rotating hole for accommodating the rotating positioning post 31, so that the rotating positioning post 31 can rotate freely through the rotating hole.

[0073] The stator is a metal or rigid non-metal cylinder. Materials can include copper, stainless steel, and ABS (Acrylonitrile Butadiene Styrene plastic). The inner diameter of the rotating hole is greater than or equal to the outer diameter of the positioning post, ensuring free rotation of the positioning post within the rotating hole. Furthermore, the outer diameter of the stator needs to be equal to the inner diameter of the cylindrical conduit to ensure a tight fit between the stator and the cylindrical conduit, preventing displacement during rotation.

[0074] It should be noted that this preset position can be set according to the actual situation.

[0075] In this embodiment, when the integrated transducer component rotates, the rotating positioning post rotates within the rotating hole. The integrated transducer component is positioned and controlled by the rotating hole and the rotating positioning post, which allows the integrated transducer component to rotate within a fixed area. This further avoids the integrated transducer component colliding with the inner wall of the cylindrical conduit and causing friction, thereby improving the signal-to-noise ratio and making the obtained image signal more accurate.

[0076] In one embodiment, the ratio of the axial length of the stator 41 to the axial length of the rotary positioning column 31 is 0.5 to 0.9.

[0077] In this embodiment, the ratio of the axial length of the stator to the axial length of the rotating positioning column is set to 0.5~0.9, which allows the rotating positioning column to rotate better within the rotating hole of the stator and prevents the rotating positioning column from slipping out of the rotating hole during rotation.

[0078] In one embodiment, the difference between the outer diameter of the rotating scanning imaging component and the inner diameter of the cylindrical conduit 13 ranges from 0.1 mm to 0.2 mm.

[0079] Furthermore, the difference between the outer diameter of the cylindrical spring and the inner diameter of the cylindrical conduit 13 ranges from 0.1 mm to 0.2 mm.

[0080] In this embodiment, the difference between the outer diameter of the rotating scanning imaging component and / or the outer diameter of the cylindrical spring and the inner diameter of the cylindrical conduit 13 is set to 0.1 mm to 0.2 mm. This allows the rotating scanning imaging component and / or the cylindrical spring to rotate flexibly within the cylindrical conduit while maximizing the use of space within the cylindrical conduit.

[0081] While specific embodiments of this utility model have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of this utility model is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of this utility model, but all such changes and modifications fall within the scope of protection of this utility model.

Claims

1. A rotating scanning imaging component, characterized in that, The rotating scanning imaging assembly includes a transducer and a cylindrical spring; The transducer is covered by a cylindrical shell, and the transducer and the cylindrical shell form a cylindrical integrated transducer assembly. The cylindrical spring is connected to one end of the integrated transducer assembly, causing the integrated transducer assembly to rotate along with the cylindrical spring.

2. The rotating scanning imaging assembly as described in claim 1, characterized in that, The acoustic center of the transducer is substantially coincident with the cylindrical center of the integrated transducer assembly.

3. The rotating scanning imaging assembly as described in claim 2, characterized in that, The overlap error between the acoustic center of the transducer and the cylindrical center of the integrated transducer assembly is less than or equal to 0.1 mm.

4. The rotating scanning imaging assembly as described in claim 1, characterized in that, The inner diameter of the cylindrical spring is greater than or equal to the outer diameter of the integrated transducer assembly; And / or, The distance between the transducer and the cylindrical spring is greater than or equal to the wavelength of the transducer at the center frequency; And / or, The cylindrical spring is bonded to the integrated transducer assembly; And / or, The cylindrical outer shell is wrapped around the outside of the transducer by casting or hot pressing.

5. The rotating scanning imaging assembly as described in claim 1, characterized in that, The other end of the cylindrical integrated transducer is provided with a rotating positioning post, which is substantially coaxial with the integrated transducer.

6. The rotating scanning imaging assembly as described in claim 5, characterized in that, The coaxial error between the rotating positioning column and the integrated transducer assembly is less than or equal to 0.1 mm; And / or, The rotary positioning column is formed by casting or hot pressing. And / or, The axial length of the rotary positioning column is less than or equal to 5 mm; And / or, The outer diameter of the rotating positioning column is less than or equal to 0.3 mm.

7. A rotating scanning imaging device, characterized in that, The rotating scanning imaging device includes a rotating scanning imaging component and a cylindrical conduit; the cylindrical conduit is used to house the rotating scanning imaging component. The rotating scanning imaging assembly includes a transducer and a cylindrical spring; The transducer is covered by a cylindrical shell, and the transducer and the cylindrical shell form a cylindrical integrated transducer assembly. The cylindrical spring is connected to one end of the integrated transducer assembly, so that the integrated transducer assembly rotates in the cylindrical conduit along with the cylindrical spring.

8. The rotating scanning imaging device as described in claim 7, characterized in that, The other end of the integrated transducer assembly is provided with a rotary positioning column; A cylindrical stator is provided at a predetermined position inside the cylindrical conduit; The cylindrical stator has a rotating hole at its center to accommodate the rotating positioning post, allowing the rotating positioning post to rotate freely through the rotating hole.

9. The rotating scanning imaging device as described in claim 8, characterized in that, The ratio of the axial length of the stator to the axial length of the rotary positioning column is 0.5 to 0.

9.

10. The rotating scanning imaging device as described in claim 8, characterized in that, The difference between the outer diameter of the rotating scanning imaging component and the inner diameter of the cylindrical conduit ranges from 0.1 mm to 0.2 mm.

Images