Intracardiac echodiagnostic device acoustic operating frequency test platform

Abstract

The application belongs to the field of testing of acoustic working frequency of medical ultrasonic equipment, and specifically discloses an acoustic working frequency testing platform for intracardiac ultrasonic diagnostic equipment, which comprises a testing groove, an inner ultrasonic catheter fixing device and a reflector fixing device. The testing groove is internally formed with an accommodation cavity with an open top. The inner ultrasonic catheter fixing device is slidably arranged on the testing groove and used for clamping and fixing an ultrasonic catheter and placing the ultrasonic catheter in a testing medium. In an XYZ orthogonal coordinate system with a sliding direction as an X direction, the inner ultrasonic catheter fixing device can drive the ultrasonic catheter to move along X, Y and Z axial directions and rotate around the Y and Z axial directions. The reflector fixing device is slidably arranged on the testing groove and used for fixing a reflector and placing the reflector in the testing medium. The reflector fixing device can drive the reflector to move along the X, Y and Z axial directions. The application can solve the technical problem that the existing testing tool is difficult to be compatible with intracardiac ultrasonic catheters with different diameters and has insufficient adjustment freedom, thereby leading to low testing efficiency.

Description

Technical Field

[0001] This application belongs to the technical field of testing the acoustic operating frequency of medical ultrasound equipment, and more specifically, relates to a testing platform for the acoustic operating frequency of intracardiac ultrasound diagnostic equipment. Background Technology

[0002] The acoustic operating frequency of medical ultrasound equipment is a crucial performance parameter. Equipment manufacturers and relevant testing departments must measure this parameter in a standardized and scientific manner according to the method for measuring the pulse echo bandwidth using a pulse generator receiver, as outlined in the pharmaceutical industry standard YY / T 1142-2013, "Test Methods for Frequency Characteristics of Medical Ultrasonic Equipment and Probes." Intracardiac ultrasound diagnostic equipment is a type of medical ultrasound equipment. While similar products share a similar external structure, slight differences exist in their dimensions and catheter diameter.

[0003] However, existing testing fixtures are usually designed for specific specifications and are difficult to stably clamp intracardiac ultrasound catheters of the same type but different diameters. At the same time, existing fixtures have limited freedom of adjustment for the position of the ultrasound catheter tip, making it difficult to achieve high-precision position adjustment in multiple directions. This results in the ultrasound transmitting unit not being able to accurately face the reflector, affecting testing efficiency and the accuracy of test results. Utility Model Content

[0004] In response to the deficiencies or improvement needs of existing technologies, this application provides a test platform for the acoustic working frequency of intracardiac ultrasound diagnostic equipment, which aims to solve the technical problem that existing test fixtures are difficult to be compatible with intracardiac ultrasound catheters of different diameters and have insufficient adjustment freedom, resulting in low test efficiency.

[0005] The above-mentioned technical objectives of this application are mainly achieved through the following technical solutions.

[0006] This application provides a testing platform for the acoustic operating frequency of an intracardiac ultrasound diagnostic device, including a test tank, an internal ultrasound catheter fixation device, and a reflector fixation device. The test tank has an open-top cavity for holding a test medium. The internal ultrasound catheter fixation device is slidably disposed on the test tank to clamp and fix the ultrasound catheter and place it in the test medium. In an XYZ orthogonal coordinate system with the sliding direction of the internal ultrasound catheter fixation device as the X-axis, the internal ultrasound catheter fixation device can drive the ultrasound catheter to move along the X, Y, and Z axes and rotate around the Y and Z axes. The reflector fixation device is slidably disposed on the test tank to fix the reflector and place it in the test medium. The reflector fixation device can drive the reflector to move along the X, Y, and Z axes. Through this overall structure, both the internal ultrasound catheter fixation device and the reflector fixation device can slide along the guide rail at the top of the test tank to achieve coarse positioning in the X-axis direction. Simultaneously, the end of the ultrasound catheter and the reflector are immersed in the test medium within the cavity, meeting the testing requirements for ultrasound propagation media.

[0007] In a preferred embodiment of this application, the test slot includes a fixed base plate, a profile frame fixedly mounted on the fixed base plate, a ring of side plates disposed within the profile frame, and guide rails disposed on both sides of the top of the profile frame; the side plates and the fixed base plate enclose the accommodating cavity; a first slider group and a second slider group are slidably disposed on the guide rails, and the internal ultrasound catheter fixation device and the reflector fixation device are respectively connected to the first slider group and the second slider group to slide along the direction of the guide rails. The guide rails on both sides of the top of the profile frame provide a stable X-axis sliding base for the internal ultrasound catheter fixation device and the reflector fixation device, facilitating coarse adjustment and positioning of the relative distance between them.

[0008] In a preferred embodiment of this application, the intracardiac ultrasound catheter fixation device includes a first sliding support, a first sliding block, an XYZ three-axis precision manual adjustment module, a first precision turntable, a second precision turntable, and an intracardiac ultrasound catheter clamp. The first sliding support includes two first slider connecting blocks and a first guide shaft connected between the two first slider connecting blocks. The first guide shaft extends along the Y-axis direction, and the two first slider connecting blocks are respectively fixedly installed on the first slider group on both sides of the guide rail. The first sliding block is slidably disposed on the first guide shaft. The XYZ three-axis precision manual adjustment module is fixedly installed on the first sliding block for manually fine-tuning the position of the ultrasound catheter in the X, Y, and Z axes. The first precision turntable is fixedly installed at the end of the XYZ three-axis precision manual adjustment module for driving the ultrasound catheter to rotate around the Y-axis direction. The second precision turntable is fixedly installed at the output end of the first precision turntable for driving the ultrasound catheter to rotate around the Z-axis direction. The intracardiac ultrasound catheter clamp is fixedly installed at the output end of the second precision turntable. The first sliding bracket enables coarse adjustment in the Y-axis direction, the XYZ three-axis precision manual adjustment module enables precise adjustment in the X, Y, and Z translation directions, the first precision turntable enables rotation adjustment around the Y-axis, and the second precision turntable enables rotation adjustment around the Z-axis. The five degrees of freedom precision adjustments work together to ensure that the ultrasonic transmitting unit can be precisely aligned with the reflector.

[0009] In a preferred embodiment of this application, two first locking blocks are provided at both ends of the first guide shaft. The two first locking blocks are respectively positioned vertically opposite to the guide rails on both sides of the test groove. The first locking blocks are provided with handle screws, which are used to lock the position of the internal ultrasound catheter fixation device in the X-axis direction to prevent the internal ultrasound catheter fixation device from being accidentally displaced in the X-axis direction and to ensure the stability after position adjustment.

[0010] In a preferred embodiment of this application, the intracardiac ultrasound catheter clamp includes a drive shaft, a fixing block, manual grippers, an auxiliary frame, and a fixing sleeve. One end of the drive shaft is fixedly connected to the output surface of the second precision turntable. The fixing block is fixedly installed at the other end of the drive shaft. The fixing block has a through hole for the ultrasound catheter to pass through. Two manual grippers are hinged to both sides of the fixing block via a shaft. A spring is provided between the upper ends of the two manual grippers to center and clamp the ultrasound catheter passing through the through hole. One end of the auxiliary frame is fixedly installed at the bottom of the fixing seat of the second precision turntable. The other end of the auxiliary frame has a fixing sleeve. The fixing block and the fixing sleeve are axially opposite each other. The ultrasound catheter passes through the fixing block and is inserted into the fixing sleeve. The two manual grippers automatically center and clamp under the action of the spring force, which can adaptively clamp intracardiac ultrasound catheters of the same type but different diameters, effectively solving the problem of compatible clamping of catheters of different specifications. When adjusting the second precision turntable, the drive shaft rotates with the turntable, and the ultrasonic catheter clamped by the manual gripper rotates accordingly, while the auxiliary frame and the fixed sleeve remain stationary. The ultrasonic catheter inside the fixed sleeve rotates relative to the fixed sleeve, thereby adjusting the ultrasonic receiving angle.

[0011] In a preferred embodiment of this application, a movable wire loop is further provided in the middle of the transmission shaft. The movable wire loop can move axially along the transmission shaft and rotate around the transmission shaft. The ultrasonic catheter passes through the movable wire loop and extends into the through hole of the fixing block to assist the ultrasonic catheter in passing through the fixing block. The movable wire loop can adjust its axial position and rotation angle according to the bending angle of the ultrasonic catheter, and maintains a fixed posture after fixing, ensuring that the ultrasonic catheter enters the clamping part in a stable bending posture.

[0012] In a preferred embodiment of this application, the reflector fixing device includes a second sliding bracket, a second sliding block, a third guide shaft, and a reflector fixing seat. The second sliding bracket includes two second sliding block connecting blocks and a second guide shaft connected between the two second sliding block connecting blocks. The second guide shaft extends along the Y-axis direction, and the two second sliding block connecting blocks are respectively fixedly installed on the second sliding block groups on both sides of the guide rail. The second sliding block is slidably disposed on the second guide shaft. The third guide shaft extends along the Z-axis direction and slidably passes through the second sliding block. The reflector fixing seat is fixedly installed at the bottom end of the third guide shaft and is used to fix the reflector. The cooperation between the second sliding bracket and the guide rail enables movement in the X-axis direction, the second sliding block enables movement in the Y-axis direction, and the third guide shaft enables height adjustment in the Z-axis direction. Independent adjustment in these three directions facilitates precise positioning of the reflector to the test position opposite to the end of the ultrasonic catheter.

[0013] In a preferred embodiment of this application, two second locking blocks are provided at both ends of the second guide shaft. The two second locking blocks are respectively positioned vertically opposite to the guide rails on both sides of the test slot. The second locking blocks are provided with handle screws, which are used to lock the position of the reflector fixing device in the X-axis direction to prevent the reflector fixing device from being accidentally displaced in the X-axis direction and to ensure the stability after position adjustment.

[0014] In a preferred embodiment of this application, a sound-absorbing layer made of sound-absorbing material is provided on the inner wall of the accommodating cavity. The sound-absorbing layer can absorb the reflected echo of ultrasonic waves on the inner wall of the accommodating cavity, effectively reducing stray ultrasonic interference in the test environment, improving the signal-to-noise ratio of the test signal, and thus further improving the accuracy of the acoustic operating frequency test results.

[0015] In a preferred embodiment of this application, the bottom of the fixed base plate is further provided with adjustable feet for adjusting the level. By adjusting the height of the adjustable feet, the level of the entire test tank can be adjusted, ensuring the level accuracy of the test platform and thus improving the reliability of the test results.

[0016] In summary, compared with the prior art, the technical solutions conceived in this application mainly possess the following technical features and advantages: 1. This application achieves precise adjustment of the position of the end of the intracardiac ultrasound catheter in five degrees of freedom—three translational directions (X, Y, and Z) and two rotational directions (around the Y and Z axes)—through the series coordination of the first sliding bracket, the first sliding block, the XYZ three-axis precision manual adjustment module, the first precision turntable, and the second precision turntable. This effectively ensures that the ultrasound transmitting unit can be precisely aligned with the reflector surface during testing, overcoming the shortcomings of existing tooling with limited adjustment freedom and inability to achieve high-precision multi-directional position adjustment, and significantly improving testing efficiency and the accuracy of test results.

[0017] 2. The intracardiac ultrasound catheter clamp of this application adopts a double manual clamping structure with spring centering. The two manual clamping jaws automatically clamp towards the center under the action of spring force, which can adaptively and reliably clamp intracardiac ultrasound catheters of the same type but different diameters. There is no need to change to special clamps for different specifications of catheters, which effectively solves the technical problem that existing tooling is difficult to be compatible with catheters of different diameters and greatly improves the versatility of the test platform.

[0018] 3. The test slot of this application integrates the accommodating cavity and the guide rail into one unit. The inner sidewall of the accommodating cavity is provided with a sound-absorbing layer, which can effectively absorb stray ultrasonic echoes during the test process, reduce interference in the test environment, and further improve the signal-to-noise ratio and accuracy of the acoustic working frequency test results. At the same time, the integrated structure simplifies the overall configuration of the test platform and improves the compactness and stability of the device. Attached Figure Description

[0019] Figure 1 A schematic diagram of the device for measuring the bandwidth of pulse echo using a pulse generator and receiver; Figure 2 This is a three-dimensional structural diagram of the acoustic operating frequency testing platform of the intracardiac ultrasound diagnostic device described in this application; Figure 3 This is a schematic diagram of the structure of the test tank described in this application; Figure 4 This is a schematic diagram of the internal ultrasound catheter fixation device described in this application; Figure 5 This is a schematic diagram of the intracardiac ultrasound catheter clamp described in this application; Figure 6 This is a schematic diagram of the reflector fixing device described in this application.

[0020] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 10. Test slot; 11. Accommodating cavity; 12. Fixed base plate; 13. Profile frame; 14. Side plate; 15. Guide rail; 16. First slider group; 17. Second slider group; 18. Adjustable feet; 20. Intracardiac ultrasound catheter fixation device; 21. First sliding bracket; 211. First slider connecting block; 212. First guide shaft; 213. First locking block; 22. First sliding block; 23. XYZ three-axis precision manual adjustment module; 24. First precision turntable; 25. Second precision turntable; 26. Intracardiac ultrasound catheter clamp; 261. Transmission shaft; 262. Fixing block; 263. Manual gripper; 264. Spring; 265. Auxiliary frame; 266. Fixing sleeve; 267. Movable wire ring; 27. Ultrasonic catheter; 30. Reflector fixing device; 31. Second sliding bracket; 311. Second slider connecting block; 312. Second guide shaft; 313. Second locking block; 32. Second sliding block; 33. Third guide shaft; 34. Reflector fixing seat; 35. Reflector. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0022] According to the installation method in the test method for measuring the pulse echo bandwidth using a pulse generator and receiver in the pharmaceutical industry standard YY / T 1142-2013 "Test Method for Frequency Characteristics of Medical Ultrasonic Equipment and Probes", such as... Figure 1 As shown, this application references Figure 1 The test principle shown is designed as follows: Figures 2 to 6 The test platform shown.

[0023] like Figure 2 As shown, the intracardiac ultrasound diagnostic equipment acoustic operating frequency testing platform provided in this application mainly consists of three parts: a test tank 10, an internal ultrasound catheter fixation device 20, and a reflector fixation device 30. Both the internal ultrasound catheter fixation device 20 and the reflector fixation device 30 are slidably mounted on the top of the test tank 10, located above the receiving cavity 11, so that the end of the ultrasound catheter 27 and the reflector 35 are both immersed in the test medium within the receiving cavity 11, meeting the testing requirements for the ultrasound propagation medium. The test groove 10 has an open-top accommodating cavity 11 for holding the test medium. The internal ultrasonic catheter fixing device 20 is used to clamp and fix the ultrasonic catheter 27 and place the ultrasonic catheter 27 in the test medium. In the XYZ orthogonal coordinate system with the sliding direction of the internal ultrasonic catheter fixing device 20 as the X direction, the internal ultrasonic catheter fixing device 20 can drive the ultrasonic catheter 27 to move along the X, Y, and Z axes and rotate around the Y and Z axes. The reflector fixing device 30 is used to fix the reflector 35 and place the reflector 35 in the test medium. The reflector fixing device 30 can drive the reflector 35 to move in the X, Y, and Z axes.

[0024] The intracardiac ultrasound diagnostic equipment acoustic frequency testing platform described in this application fixes the ultrasound catheter 27 with an internal ultrasound catheter fixing device 20, allowing its end position to be adjusted in five degrees of freedom: three translational directions (X, Y, Z) and two rotational directions (around the Y and Z axes). A reflector 35 is fixed with a reflector fixing device 30, allowing the reflector 35 to be adjusted in three translational directions (X, Y, Z). Simultaneously, both the end of the ultrasound catheter 27 and the reflector 35 are immersed in the test medium within the accommodating cavity 11, meeting the testing requirements of the ultrasound propagation medium. This effectively ensures that the ultrasound transmitting unit can accurately face the surface of the reflector 35 during testing, overcoming the limitations of existing tooling in terms of limited adjustment freedom and inability to achieve high-precision multi-directional position adjustment, significantly improving testing efficiency and the accuracy of test results.

[0025] The following will be combined with the appendix Figures 2 to 6 The illustrated embodiment provides a detailed description of the specific structure of each part of the acoustic working frequency testing platform of the intracardiac ultrasound diagnostic device described in this application, as well as the position and connection relationship between each part.

[0026] The intracardiac ultrasound diagnostic equipment acoustic operating frequency testing platform includes a test slot 10, such as... Figure 2 and Figure 3As shown, the test tank 10 is a rectangular structure with an open top, which serves as the installation base for the entire test platform. The test tank 10 is placed on the ground and has a cavity 11 for holding the test medium. The internal ultrasonic catheter fixing device 20 and the reflector fixing device 30 are both installed on the test tank 10.

[0027] Specifically, such as Figure 3 As shown, the test tank 10 includes a fixed base plate 12, a profile frame 13, side plates 14, guide rails 15, a first slider group 16, and a second slider group 17. The profile frame 13 is fixedly installed on the fixed base plate 12. The profile frame 13 includes multiple vertically arranged longitudinal beams and horizontally arranged transverse beams. The longitudinal beams and transverse beams are fixedly connected to form a rectangular frame. The four bottom corners of the rectangular frame are fixedly installed on the fixed base plate 12. A ring of side plates 14 is provided on the inner side of the profile frame 13. The ring of side plates 14 includes four rectangular plates located on the four sides of the rectangular frame. The side plates 14 and the fixed base plate 12 form a top-open receiving cavity 11, which is used to hold degassed water or other specified test media. The guide rails 15 are provided on both sides of the top of the profile frame 13. The guide rails 15 include two slide rails extending along the length of the test tank 10. A first slider group 16 and a second slider group 17 are slidably disposed on the guide rail 15. Each of the first slider group 16 and the second slider group 17 includes two sliders, which are slidably mounted on the two guide rails respectively. The internal ultrasound catheter fixation device 20 and the reflector fixation device 30 are respectively connected to the first slider group 16 and the second slider group 17 to slide along the direction of the guide rail 15.

[0028] An XYZ orthogonal coordinate system is established with the length of the test groove 10 as the X-axis, the width of the test groove 10 as the Y-axis, and the vertical direction as the Z-axis. The internal ultrasonic catheter fixing device 20 and the reflector fixing device 30 installed on the test groove 10 can move along the X-axis.

[0029] In the above embodiments, the test slot 10 integrates the receiving cavity 11 and the guide rail 15 into one unit, simplifying the overall configuration of the test platform and improving the compactness and stability of the device. In other embodiments, the container holding the test medium can also be set separately from the support rail, which can be flexibly adjusted according to the actual test site conditions. This application does not impose any restrictions on this.

[0030] Better, such as Figure 3 As shown, the bottom of the fixed base plate 12 is also provided with adjustable feet 18. By adjusting the height of the adjustable feet 18, the level of the entire test slot 10 can be adjusted to ensure the level accuracy of the test platform. In this embodiment, the four adjustable feet 18 are respectively installed at the four corners of the fixed base plate 12.

[0031] Preferably, the inner wall of the accommodating cavity 11 is provided with a sound-absorbing layer made of sound-absorbing material, such as zeolite or sound-absorbing cotton. The sound-absorbing layer is used to absorb the reflected echo of ultrasonic waves on the side wall, reduce stray ultrasonic interference in the test environment, and improve the signal-to-noise ratio of the test signal.

[0032] The intracardiac ultrasound diagnostic equipment acoustic operating frequency testing platform also includes an intracardiac ultrasound catheter fixation device 20, such as... Figure 2 , Figure 4 and Figure 5 As shown, the internal ultrasonic catheter fixation device 20 is slidably mounted on the top of the test tank 10. The internal ultrasonic catheter fixation device 20 is used to hold and fix the ultrasonic catheter 27 and extend the end of the ultrasonic catheter 27 into the test medium. Simultaneously, the internal ultrasonic catheter fixation device 20 can drive the ultrasonic catheter 27 to move along the X, Y, and Z axes and rotate around the Y-axis and Z-axis, thereby achieving flexible adjustment of the end of the ultrasonic catheter 27. It should be noted that the rotation around the Y-axis and Z-axis is relative to the initial XYZ coordinate system.

[0033] Specifically, such as Figure 4 As shown, the intracardiac ultrasound catheter fixation device 20 includes a first sliding bracket 21, a first sliding block 22, an XYZ three-axis precision manual adjustment module 23, a first precision turntable 24, a second precision turntable 25, and an intracardiac ultrasound catheter clamp 26.

[0034] The first sliding bracket 21 includes two first slider connecting blocks 211 and a first guide shaft 212 connected between the two first slider connecting blocks 211. The first guide shaft 212 extends along the Y-axis. The two first slider connecting blocks 211 are respectively fixedly installed on the first slider groups 16 on both sides of the guide rail 15, so that the entire internal ultrasound catheter fixation device 20 can slide back and forth along the guide rail 15 (X-axis direction) with the first slider groups 16. In this embodiment, two parallel first guide shafts 212 are connected between the two first slider connecting blocks 211.

[0035] Furthermore, such as Figure 2 and Figure 4 As shown, two first locking blocks 213 are provided at both ends of the first guide shaft 212. The two first locking blocks 213 are respectively aligned vertically with the two slide rails on the test groove 10. Each first locking block 213 is provided with a handle screw, which is used to lock the position of the internal ultrasound catheter fixation device 20 in the X-axis direction. When the internal ultrasound catheter fixation device 20 slides along the guide rail 15 to the required position, tightening the handle screw on the first locking block 213 will lock the entire internal ultrasound catheter fixation device 20 to the test groove 10, preventing it from moving.

[0036] The first sliding block 22 is slidably sleeved on the two first guide shafts 212, and can be manually moved along the direction of the first guide shaft 212 (Y-axis direction) to achieve coarse positioning in the Y-axis direction. Furthermore, the first sliding block 22 is also provided with a handle screw. When the handle screw on the first sliding block 22 is tightened, the first sliding block 22 is fixedly locked to the first guide shaft 212 and cannot slide along the Y-axis.

[0037] The XYZ three-axis precision manual adjustment module 23 is fixedly mounted on the first sliding block 22 and is used to achieve precise adjustment in the X, Y, and Z translation directions. The XYZ three-axis precision manual adjustment module 23 is composed of three identical single-axis precision modules connected in series by connectors. The stroke of each single-axis precision module is adjusted by an indexing head. The output end of the indexing head is fixedly connected to the sliding block on the module. By turning the indexing head knob to adjust the output of the indexing head, the position of the module sliding block can be precisely adjusted. The position adjustment accuracy can reach ±0.02mm.

[0038] The first precision turntable 24 is fixedly mounted at the end of the XYZ three-axis precision manual adjustment module 23, and is used to drive the ultrasound catheter 27 to rotate around the Y-axis, with an adjustment accuracy of ±0.05°. The second precision turntable 25 is fixedly mounted at the output end of the first precision turntable 24, and is used to drive the ultrasound catheter 27 to rotate around the Z-axis, with an adjustment accuracy also of ±0.05°. The intracardiac ultrasound catheter clamp 26 is fixedly mounted at the output end of the second precision turntable 25.

[0039] Furthermore, the first precision rotary table 24 and the second precision rotary table 25 have the same structure, both consisting of three concentrically arranged flat plates: the first layer is a fixed plate, which is relatively fixed and serves as the mounting base for the entire rotary table; the second layer is a fine adjustment plate, with a fine adjustment indexing head and fine adjustment fixing screws installed on its side; the third layer is a coarse adjustment plate, which is also the load mounting position, with a coarse adjustment fixing screw and adjustment handle installed on its side. Adjacent plates are connected by bearings and can rotate relative to each other. During adjustment, first tighten the fine adjustment fixing screws, loosen the coarse adjustment fixing screws, manually rotate the coarse adjustment plate to rotate the load to the desired approximate position, and then tighten the coarse adjustment fixing screws; then loosen the fine adjustment fixing screws again, and precisely adjust the load angle by rotating the indexing head knob. After adjusting to the desired angle, tighten the fine adjustment fixing screws to complete the coarse and fine angle adjustments.

[0040] like Figure 5 As shown, the intracardiac ultrasound catheter clamp 26 includes a drive shaft 261, a fixing block 262, a manual gripper 263, a spring 264, an auxiliary frame 265, and a fixing sleeve 266.

[0041] One end of the drive shaft 261 is fixedly connected to the output platform of the second precision turntable 25. A fixing block 262 is fixedly installed at the other end of the drive shaft 261. The fixing block 262 has a through hole for the ultrasonic catheter 27 to pass through. The ultrasonic catheter 27 passes through the center of the through hole from a side hole in the fixing block 262 and exits from the bottom. Two manual grippers 263 are hinged to both sides of the fixing block 262 via a shaft. A spring 264 is provided between the upper ends of the two manual grippers 263. The elastic force of the spring 264 causes the lower ends of the two manual grippers 263 to automatically clamp towards the center. In this embodiment, a spring 264 is provided between the inner surface of each manual gripper 263 and the side wall of the fixing block 262. When the ultrasonic catheter 27 passes through the lower ends of the two manual grippers 263, it is clamped by the elastic force of the spring 264, thus adaptively accommodating intracardiac ultrasonic catheters of the same type but different diameters.

[0042] Understandably, without changing the core structural mechanism described above, the centering and clamping structure of the spring 264 and the manual gripper 263 in the intracardiac ultrasound catheter clamp 26 is not limited to the specific form described above. As long as the lower ends of the two manual grippers 263 can automatically clamp towards the center under the action of elastic force and form a centering and clamping relationship with the ultrasound catheter 27 passing through the through hole, it can adapt to the stable clamping of intracardiac ultrasound catheters in different diameter ranges.

[0043] Furthermore, one end of the auxiliary frame 265 is fixedly installed at the bottom of the fixed base of the second precision turntable 25, and the auxiliary frame 265 does not rotate with the output table surface of the second precision turntable 25. The other end of the auxiliary frame 265 is provided with a fixed sleeve 266, and the fixed block 262 is axially and vertically opposite to the fixed sleeve 266. The ultrasonic conduit 27 passes through the fixed block 262 and is inserted into the fixed sleeve 266. The side of the fixed sleeve 266 is provided with an opening, through which the ultrasonic transmitter and receiver part of the ultrasonic conduit 27 is exposed to meet the requirements of ultrasonic signal transmission and reception. When manually adjusting the second precision turntable 25, since the transmission shaft 261 is fixedly connected to the output table surface of the second precision turntable 25, the transmission shaft 261 will rotate with the turntable. The fixed block 262 fixedly connected to the transmission shaft 261 and the ultrasonic catheter 27 clamped by the manual gripper 263 will also rotate. The auxiliary frame 265 is fixed at the bottom of the fixed seat of the second precision turntable 25 and does not rotate with the output end of the turntable. The fixed sleeve 266 installed on the auxiliary frame 265 also remains fixed and does not rotate. The ultrasonic catheter 27 inside the fixed sleeve 266 rotates a certain angle with the transmission shaft 261, so that the ultrasonic catheter 27 and the fixed sleeve 266 form a relative rotational displacement, thereby realizing the adjustment of the ultrasonic receiving angle.

[0044] Better, such as Figure 5As shown, a movable wire ring 267 is also provided in the middle of the transmission shaft 261. The movable wire ring 267 can move along the axial direction of the transmission shaft 261 and rotate around the transmission shaft 261. After the ultrasonic catheter 27 passes through the movable wire ring 267, it extends into the through hole of the fixing block 262. The movable wire ring 267 is used to assist the ultrasonic catheter 27 in entering the fixing block 262 at a suitable bending angle, and plays an auxiliary guiding and fixing role. After fixing, it maintains a fixed angle and position to ensure that the catheter insertion posture is stable.

[0045] The intracardiac ultrasound diagnostic equipment acoustic operating frequency testing platform also includes a reflector fixing device 30, such as... Figure 2 and Figure 6 As shown, the reflector fixing device 30 is slidably installed on the top of the test tank 10. The reflector fixing device 30 is used to install the reflector 35 and extend the reflector 35 into the test medium. At the same time, the reflector fixing device 30 can drive the reflector 35 to move along the X, Y and Z axes to achieve flexible adjustment of the position of the reflector 35.

[0046] Specifically, the reflector fixing device 30 includes a second sliding bracket 31, a second sliding block 32, a third guide shaft 33, and a reflector fixing seat 34.

[0047] The second sliding bracket 31 includes two second slider connecting blocks 311 and a second guide shaft 312 connected between the two second slider connecting blocks 311. The second guide shaft 312 extends along the Y-axis. The two second slider connecting blocks 311 are respectively fixedly installed on the second slider groups 17 on both sides of the guide rail 15, so that the entire reflector fixing device 30 can slide along the guide rail 15 (X-axis direction) with the second slider groups 17. In this embodiment, two parallel second guide shafts 312 are connected between the two second slider connecting blocks 311.

[0048] Furthermore, such as Figure 2 and Figure 6 As shown, two second locking blocks 313 are also provided at both ends of the second guide shaft 312. The two second locking blocks 313 are respectively vertically opposite to the two slide rails on the test slot 10. The second locking blocks 313 are provided with handle screws, which are used to lock the position of the reflector fixing device 30 in the X-axis direction. When the reflector fixing device 30 slides along the guide rail 15 to the required position, tightening the handle screws on the second locking blocks 313 will lock the entire reflector fixing device 30 to the test slot 10, making it unable to move.

[0049] The second sliding block 32 is slidably sleeved on the two second guide shafts 312, and can be manually moved along the direction of the second guide shafts 312 (Y-axis direction). Furthermore, the second sliding block 32 is also provided with a handle screw. When the handle screw on the second sliding block 32 is tightened, the second sliding block 32 is fixedly locked to the second guide shafts 312 and cannot slide along the Y-axis.

[0050] The third guide shaft 33 extends along the Z-axis and slides through the second sliding block 32. The third guide shaft 33 can move vertically (Z-axis direction). Furthermore, the second sliding block 32 is provided with a handle screw for locking the third guide shaft 33. When the handle screw is tightened, the third guide shaft 33 is fixedly locked to the second sliding block 32 and cannot slide along the Z-axis. In this embodiment, two third guide shafts 33 are inserted through the second sliding block 32 along the Z-axis.

[0051] The reflector mounting base 34 is fixedly installed at the bottom of the two third guide shafts 33, and the reflector 35 is installed on the reflector mounting base 34. The reflector 35 can be replaced when performing different ultrasonic tests to meet different test requirements.

[0052] When using the test platform of this application to test the acoustic operating frequency, first inject degassed water or other specified test medium into the accommodating cavity 11. Pass the intracardiac ultrasound catheter through the movable loop 267, through the side hole of the fixing block 262, into the through hole of the fixing block 262, and after exiting from the bottom, insert it into the fixing sleeve 266, ensuring that the ultrasound receiver part is exposed through the side opening of the fixing sleeve 266; the two manual clamps 263 automatically center and clamp the catheter under the elastic force of the spring 264; adjust the axial position and angle of the movable loop 267 so that the catheter is inserted into the clamping part in a suitable bending posture and fixed. Subsequently, the relative distance between the inner ultrasound catheter fixation device 20 and the reflector fixation device 30 is coarsely adjusted in the X-axis direction by sliding along the guide rail 15; the end of the ultrasound catheter 27 is coarsely adjusted in the Y-axis direction by moving the first sliding block 22 on the first guide shaft 212; then the position of the end of the ultrasound catheter 27 is precisely adjusted in the X, Y, and Z directions by the XYZ three-axis precision manual adjustment module 23; the end of the ultrasound catheter 27 is precisely adjusted around the Y-axis by the first precision turntable 24; and the end of the ultrasound catheter 27 is precisely adjusted around the Z-axis by the second precision turntable 25. This ensures that the ultrasound transmitting unit of the intracardiac ultrasound catheter can be precisely aligned with the reflecting surface of the reflector 35, so that the ultrasound transmitting and receiving unit can receive the complete reflected pulse waveform, thereby completing the standard measurement of the acoustic working frequency.

[0053] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0054] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0057] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A test platform for the acoustic operating frequency of an intracardiac ultrasound diagnostic device, characterized in that, include: Test tank (10), wherein a top-open accommodating cavity (11) is formed inside the test tank (10), the accommodating cavity (11) is used to hold the test medium; An internal ultrasound catheter fixation device (20) is slidably disposed on the test groove (10). The internal ultrasound catheter fixation device (20) is used to clamp and fix the ultrasound catheter (27) and place the ultrasound catheter (27) in the test medium. In the XYZ orthogonal coordinate system with the sliding direction of the internal ultrasound catheter fixation device (20) as the X direction, the internal ultrasound catheter fixation device (20) can drive the ultrasound catheter (27) to move along the X, Y, and Z axes and rotate around the Y and Z axes. A reflector fixing device (30) is slidably disposed on the test groove (10). The reflector fixing device (30) is used to fix the reflector (35) and place the reflector (35) in the test medium. The reflector fixing device (30) can drive the reflector (35) to move in the X, Y and Z axis directions.

2. The acoustic operating frequency testing platform for intracardiac ultrasound diagnostic equipment according to claim 1, characterized in that, The test slot (10) includes: Fixed base plate (12); A profile frame (13) is fixedly installed on the fixed base plate (12). A side plate (14) is provided inside the profile frame (13). The side plate (14) and the fixed base plate (12) surround the cavity (11). Guide rails (15) are provided on both sides of the top of the profile frame (13). Two sets of sliders are slidably arranged on the guide rails (15). The internal ultrasound catheter fixing device (20) and the reflector fixing device (30) are respectively connected to the two sets of sliders so as to slide along the direction of the guide rails (15).

3. The acoustic operating frequency testing platform for intracardiac ultrasound diagnostic equipment according to claim 2, characterized in that, The internal ultrasound catheter fixation device (20) includes: The first sliding bracket (21) includes two first slider connecting blocks (211) and a first guide shaft (212) connected between the two first slider connecting blocks (211). The first guide shaft (212) extends along the Y-axis direction. The two first slider connecting blocks (211) are respectively fixedly installed on the two sliders on both sides of the profile frame (13). The first sliding block (22) is slidably disposed on the first guide shaft (212); An XYZ three-axis precision manual adjustment module (23) is fixedly installed on the first sliding block (22). The XYZ three-axis precision manual adjustment module (23) is used to manually fine adjust the position of the ultrasonic catheter (27) in the X, Y, and Z axis directions. A first precision turntable (24) is fixedly installed at the end of the XYZ three-axis precision manual adjustment module (23). The first precision turntable (24) is used to drive the ultrasonic catheter (27) to rotate around the Y-axis. A second precision turntable (25) is fixedly installed at the output end of the first precision turntable (24). The second precision turntable (25) is used to drive the ultrasonic catheter (27) to rotate around the Z-axis. An intracardiac ultrasound catheter clamp (26) is fixedly installed at the output end of the second precision turntable (25). The intracardiac ultrasound catheter clamp (26) is used to fix the ultrasound catheter (27).

4. The acoustic operating frequency testing platform for intracardiac ultrasound diagnostic equipment according to claim 3, characterized in that, Two first locking blocks (213) are provided at both ends of the first guide shaft (212). The two first locking blocks (213) are respectively aligned with the guide rails (15) on both sides of the test groove (10). The first locking blocks (213) are provided with handle screws, which are used to lock the position of the internal ultrasound catheter fixing device (20) in the X-axis direction.

5. The acoustic operating frequency testing platform for intracardiac ultrasound diagnostic equipment according to claim 3, characterized in that, The intracardiac ultrasound catheter clamp (26) includes: A transmission shaft (261) is fixedly connected at one end to the output surface of the second precision turntable (25). A fixing block (262) is fixedly installed at the other end of the transmission shaft (261). The fixing block (262) has a through hole for the ultrasonic catheter (27) to pass through. Two manual grippers (263) are hinged to both sides of the fixing block (262) through the shaft. A spring (264) is provided between the upper ends of the two manual grippers (263) so that the lower ends of the two manual grippers (263) are aligned and clamp the ultrasonic catheter (27) passing through the through hole. An auxiliary frame (265) is fixedly installed at one end on the bottom of the fixed seat of the second precision turntable (25). The other end of the auxiliary frame (265) is provided with a fixed sleeve (266). The fixed block (262) and the fixed sleeve (266) are arranged axially and vertically opposite each other. The ultrasonic catheter (27) passes through the fixed block (262) and is inserted into the fixed sleeve (266).

6. The acoustic operating frequency testing platform for intracardiac ultrasound diagnostic equipment according to claim 5, characterized in that, The transmission shaft (261) is also provided with a movable wire ring (267) in the middle. The movable wire ring (267) can move along the axial direction of the transmission shaft (261) and rotate around the transmission shaft (261). The ultrasonic catheter (27) passes through the movable wire ring (267) and extends into the through hole of the fixed block (262) to assist the ultrasonic catheter (27) in passing into the fixed block (262).

7. The acoustic operating frequency testing platform for intracardiac ultrasound diagnostic equipment according to any one of claims 2 to 6, characterized in that, The reflector fixing device (30) includes: The second sliding bracket (31) includes two second slider connecting blocks (311) and a second guide shaft (312) connected between the two second slider connecting blocks (311). The second guide shaft (312) extends along the Y-axis direction. The two second slider connecting blocks (311) are respectively fixedly installed on the two sliders on both sides of the profile frame (13). The second sliding block (32) is slidably disposed on the second guide shaft (312); A third guide shaft (33) is slidably inserted inside the second sliding block (32), and the third guide shaft (33) extends along the Z-axis direction; A reflector mounting base (34) is fixedly installed at the bottom end of the third guide shaft (33), and the reflector mounting base (34) is used to fix the reflector (35).

8. The acoustic operating frequency testing platform for intracardiac ultrasound diagnostic equipment according to claim 7, characterized in that, The second guide shaft (312) is also provided with two second locking blocks (313) at both ends. The two second locking blocks (313) are respectively aligned with the guide rails (15) on both sides of the test groove (10). The second locking blocks (313) are provided with handle screws, which are used to lock the position of the reflector fixing device (30) in the X-axis direction.

9. The acoustic operating frequency testing platform for intracardiac ultrasound diagnostic equipment according to claim 1 or 2, characterized in that, The inner wall of the accommodating cavity (11) is provided with a sound-absorbing layer made of sound-absorbing material.

10. The acoustic operating frequency testing platform for intracardiac ultrasound diagnostic equipment according to claim 2, characterized in that, The bottom of the fixed base plate (12) is also provided with adjustable feet (18) for adjusting the horizontal height.

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