Method, System, Device and Medium for Estimating Sound Transmission Characteristics of Ossicular Prostheses

Abstract

An embodiment of the present invention discloses a method, system, device and medium for estimating the sound transmission characteristics of an ossicular prosthesis. The method includes: obtaining test data of preset indicators of one or more similar physical models of the ossicular prosthesis, and the magnification ratio of the one or more similar physical models relative to the ossicular prosthesis; based on the similarity theory, determining the estimated data of the preset indicators of the ossicular prosthesis according to the test data and the magnification ratio. This solves the problem that the existing method for testing the sound transmission characteristics of ossicular prostheses at least fails to ensure the consistency of the sound transmission characteristics test for all ossicular prostheses.

Description

Technical Field

[0001] Embodiments of the present invention relate to the field of medical devices, and in particular, to a method, system, device, and medium for estimating the sound transmission characteristics of an ossicular prosthesis. Background Art

[0002] The auditory system mainly consists of the outer ear, middle ear, and inner ear. The outer ear is mainly the external auditory canal, the middle ear is mainly the ossicular chain composed of the malleus, incus, and stapes, and the inner ear is mainly the cochlea and auditory nerve. The entire auditory process is actually a transmission of sound wave vibrations, which can transmit vibration energy from the relatively large eardrum to the much smaller stapes. External sounds are transmitted through the external auditory canal to the eardrum, which generates vibrations. These vibrations cause the ossicular chain in the middle ear to vibrate accordingly. The cochlea in the inner ear is filled with fluid, and the vibration of the stapes footplate at the end of the ossicular chain introduces pressure waves in the cochlea of the inner ear, resulting in changes in the fluid pressure in the cochlea, thereby transmitting the sound vibrations to the auditory nerve to form hearing.

[0003] Due to diseases, trauma, or congenital malformations, the ossicles are sometimes damaged. If such damage results in a discontinuity of the bones between the eardrum and the oval window, then the sound conduction path will be interrupted, leading to a decrease or loss of hearing, that is, conductive deafness. When the ossicular chain is severely damaged, an ossicular prosthesis will be implanted clinically to partially or completely replace the ossicular chain and restore the function of its sound conduction pathway.

[0004] The ossicular prosthesis is used to replace the ossicular chain, so the ossicular prosthesis also needs to be able to transmit vibration energy, and its sound transmission characteristics need to be consistent with those of the ossicular chain. The ossicles are the smallest bones in the human body, and the volume of their substitute, the ossicular prosthesis, is also very small. According to individual differences, the size and model of the product vary. The maximum length dimension of the product model is 7 mm, and the diameter is 0.3 mm.

[0005] There are many current methods for testing the sound transmission characteristics of ossicular prostheses, such as comparing the changes in air-bone conduction differences before and after surgery of patients, circuit simulation, and testing the ossicular prosthesis on temporal bone specimens. However, these methods all have certain interference factors in the product design stage, making the measurement and comparison of the sound transmission characteristics of ossicular prostheses less objective. At the same time, considering the product characteristics of ossicular prostheses, the product size is too small, and there are problems such as consistency and test errors that cannot be effectively controlled during the test verification.

[0006] The applicant found during the implementation of the embodiments of the present invention that the existing methods for testing the sound transmission characteristics of ossicular prostheses have at least the problem of being unable to ensure the consistency of the sound transmission characteristics test for all ossicular prostheses. Summary of the Invention

[0007] An embodiment of the present invention provides a method, system, device and medium for estimating the sound transmission characteristics of an ossicular prosthesis, which solves the problem that the existing method for estimating the sound transmission characteristics of an ossicular prosthesis cannot ensure the consistency of the sound transmission characteristics test for all ossicular prostheses.

[0008] In a first aspect, an embodiment of the present invention provides a method for estimating the sound transmission characteristics of an ossicular prosthesis, including:

[0009] Obtaining test data of preset indicators of one or more similar physical models of the ossicular prosthesis, and the magnification ratio of the one or more similar physical models relative to the ossicular prosthesis;

[0010] Based on the similarity theory, determining the estimated data of the preset indicators of the ossicular prosthesis according to the test data and the magnification ratio.

[0011] In a second aspect, an embodiment of the present invention further provides a system for estimating the sound transmission characteristics of an ossicular prosthesis, including:

[0012] A vibration generating device, arranged at one end of a similar physical model of the ossicular prosthesis, for driving the similar physical model to vibrate under the action of a test sound signal, and the magnification ratio of the similar physical model relative to the ossicular prosthesis is known;

[0013] An artificial oval window membrane, arranged at the other end of the similar physical model of the ossicular prosthesis, for vibrating under the drive of the similar physical model;

[0014] A vibration detection device, arranged on the output side of the artificial oval window membrane, for obtaining the vibration data of the artificial oval window membrane, and the vibration detection device and the similar physical model are arranged on different sides of the artificial oval window membrane;

[0015] A data processing device, for determining the test data of the preset indicators corresponding to the vibration data, and based on the similarity theory, and according to the test data and the magnification ratio, determining the estimated data of the preset indicators of the ossicular prosthesis.

[0016] In a third aspect, an embodiment of the present invention further provides a data processing device, the data processing device includes:

[0017] One or more processors;

[0018] A storage device, for storing one or more programs;

[0019] When the one or more programs are executed by the one or more processors, the one or more processors implement the method for estimating the sound transmission characteristics of the ossicular prosthesis as described in any embodiment.

[0020] Fourthly, an embodiment of the present invention further provides a storage medium containing computer-executable instructions, which are used to execute the method for estimating the sound transmission characteristics of the ossicular prosthesis described in any embodiment when executed by a computer processor.

[0021] The technical solution of the method for estimating the sound transmission characteristics of the ossicular prosthesis provided by the embodiment of the present invention is to obtain the test data of the preset indexes of one or more similar physical models of the ossicular prosthesis, and the magnification ratio of the one or more similar physical models compared with the ossicular prosthesis; based on the similarity theory, according to the test data and the magnification ratio, determine the estimated data of the preset indexes of the ossicular prosthesis. Since the size of the similar physical model is larger than that of the ossicular prosthesis, the accuracy of the test result of its sound transmission characteristics is easy to ensure. Therefore, the test result of the sound transmission characteristics of the ossicular prosthesis can be determined by determining the test results of the sound transmission characteristics of one or more similar physical models of the ossicular prosthesis, so as to improve the flexibility and simplicity of the test of the sound transmission characteristics of the ossicular prosthesis. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0023] Figure 1 is a flowchart of the method for estimating the sound transmission characteristics of the ossicular prosthesis provided in Embodiment 1 of the present invention;

[0024] Figure 2 is a schematic diagram of the finite element device model provided in Embodiment 1 of the present invention;

[0025] Figure 3 is a schematic diagram of the original frequency response curve provided in Embodiment 1 of the present invention;

[0026] Figure 4 is a schematic diagram of the frequency response curve adjusted according to the similarity principle provided in Embodiment 1 of the present invention;

[0027] Figure 5 is a structural block diagram of the system for estimating the sound transmission characteristics of the ossicular prosthesis provided in Embodiment 3 of the present invention;

[0028] Figure 6 is a structural block diagram of the data processing device provided in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] To make the objectives, technical solutions, and advantages of the present invention clearer, the following will refer to the accompanying drawings in the embodiments of the present invention and clearly and completely describe the technical solutions of the present invention through implementation manners. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1

[0031] Figure 1 It is a flowchart of a method for estimating the sound transmission characteristics of an ossicular prosthesis provided in Embodiment 1 of the present invention. The technical solution of this embodiment is applicable to the case of in vitro testing of the sound transmission characteristics of an ossicular prosthesis. This method can be executed by a testing device for in vitro testing of the sound transmission characteristics of an ossicular prosthesis provided in the embodiments of the present invention. The device can be implemented in software and / or hardware and configured for application in a data processing device processor. The method specifically includes the following steps:

[0032] S101. Obtain the test data of the preset indicators of one or more similar physical models of the ossicular prosthesis, and the magnification ratio of the one or more similar physical models compared to the ossicular prosthesis.

[0033] Among them, the similar physical model of the ossicular prosthesis and the ossicular prosthesis satisfy the geometric similarity relationship. Therefore, the similar physical model of the ossicular prosthesis is actually a model of the ossicular prosthesis enlarged according to a preset ratio. Therefore, the shape of the ossicular prosthesis and its similar physical model in this embodiment is the same, but the size is different. Optionally, at least two similar physical models are set for each shape of the ossicular prosthesis in this embodiment.

[0034] Among them, the test data of the preset indicators are the index data for measuring the sound transmission characteristics of the ossicular prosthesis, such as the natural vibration displacement data and / or the natural vibration frequency response data. It can be understood that the vibration displacement corresponds to the vibration amplitude, the former is a vector, and the latter is a scalar.

[0035] S102. Based on the similarity theory, determine the estimated data of the preset indicators of the ossicular prosthesis according to the test data and the magnification ratio.

[0036] On the premise of damping similarity or without considering the structural damping characteristics, according to the similarity theory, the similarity relationship between the natural vibration and the frequency response between the ossicular prosthesis and its similar physical model can be determined as follows:

[0037]

[0038]

[0039]

[0040]

[0041]

[0042] Among them, m represents the ossicular prosthesis, p represents the similar physical model, H is the vibration displacement, ω is the vibration frequency, and λ l and λ E and λ ρ respectively represent the size ratio, elastic modulus ratio, and density ratio between the similar physical model and the ossicular prosthesis. When the ossicular prosthesis and its similar physical model only differ in size, the elastic modulus ratio and density ratio of the two are both 1.

[0043] Therefore, according to the similarity theory, when the ossicular prosthesis is enlarged by n times in size to obtain a similar physical model while other physical quantities remain unchanged, the ratio of the vibration frequency of the ossicular prosthesis to the vibration frequency of its similar physical model is The frequency response function of the ossicular prosthesis is n times that of the frequency response of its similar physical model. Specifically, the frequency response function is the ratio of the system output response to the input excitation, and the output response may be displacement, velocity, and acceleration. Based on the principle of single variable, the input excitations of the two in this embodiment are the same. Therefore, the ratio of the frequency response function of the ossicular prosthesis to the frequency response function of its similar physical model is

[0044] Therefore, once the test data of the preset indicators of one or more similar physical models of the ossicular prosthesis are determined, the estimated data of the preset indicators of the ossicular prosthesis can be determined according to the similarity theory and the test data of the preset indicators of the one or more similar physical models, that is, the estimated result of the sound transmission characteristics of the ossicular prosthesis can be obtained.

[0045] Specifically, after the test data of the preset indicators of at least two similar physical models of the ossicular prosthesis are determined, the average value of the initial estimated data of the preset indicators of the ossicular prosthesis corresponding to the at least two similar physical models can be determined according to the similarity theory and the initial estimated data of the preset indicators of the at least two similar physical models, and this average value is used as the estimated data of the preset indicators of the ossicular prosthesis. Using the average value of the initial estimated data of the preset indicators corresponding to at least two similar physical models of the ossicular prosthesis as the estimated data of the preset indicators of the ossicular prosthesis can reduce the error of determining the estimated data of the preset indicators of the ossicular prosthesis based on the test data corresponding to a single similar physical model of the ossicular prosthesis and improve the accuracy of the estimated data of the preset indicators of the ossicular prosthesis.

[0046] In one embodiment, an ossicular prosthesis is kept in the same shape and material, and only its size is enlarged by 3 times, 6 times and 10 times to obtain similar physical models of the ossicular prosthesis. Based on the finite element simulation method, the dynamic characteristics of the ossicular prosthesis and its three similar physical models are analyzed respectively. The finite element device model on which the finite element simulation model is based is as shown in Figure 2 . The finite element device model includes a simulated tympanic membrane 11 and a simulated oval window membrane 12 arranged at both ends of the simulated ossicular prosthesis or the simulated similar physical model 10, and a simulated external auditory canal 13 arranged at the input end of the simulated tympanic membrane 11. The simulation results based on this finite element device model are shown in Table 1, and this Table 1 shows the frequency response comparison results of the first 5 modes of the ossicular prosthesis and its three similar physical models.

[0047] Table 1 Frequency response comparison results of the first 5 modes of the ossicular prosthesis and its three similar physical models

[0048] First order (Hz) Second order (Hz) Third order (Hz) Fourth order (Hz) Fifth order (Hz) Ossicular prosthesis 1982.3 7098.9 7099.8 2255.5 2311 Similar physical model 1 660.65 699.35 700.06 751.76 770.26 Similar physical model 2 330.37 349.73 350.09 375.97 385.15 Similar physical model 3 198.21 709.84 210.02 225.55 231.1

[0049] By comparing the natural frequencies of the ossicular prosthesis and its respective similar physical models, it can be known that the frequencies of each order of the ossicular prosthesis are n times the corresponding frequencies of its similar physical models, which is consistent with the similarity theory. Among them, n is the ratio of the size of the similar physical model of the ossicular prosthesis to the size of the ossicular prosthesis.

[0050] In the sound listening environment of the human ear, generally, a frequency response analysis is performed on the actual ossicular prosthesis in the frequency range of 700 - 7000 Hz at 90 dB to measure its sound transmission characteristics. According to the similarity theory, the corresponding frequency range of the similar physical model enlarged by 3 times is 66 - 2666 Hz, the corresponding frequency range of the similar physical model enlarged by 6 times is 33 - 1333 Hz, and the corresponding frequency range of the similar physical model enlarged by 10 times is 70 - 700 Hz. In the respective frequency ranges corresponding to the ossicular prosthesis and its similar physical models, harmonic response analysis is performed on the ossicular prosthesis and its similar physical models respectively. The frequency response curves obtained from the harmonic response analysis are as shown in Figure 3 . Among them, the harmonic response curve is the change of the vibration amplitude of the artificial oval window membrane with frequency.

[0051] Based on the similarity theory, similarity transformation is performed on the frequency response curves of the respective similar physical models obtained from the harmonic response analysis, that is, when the similar physical model is enlarged by n times relative to the ossicular prosthesis, the frequency of the corresponding frequency response curve of the similar physical model is reduced by n times, and the vibration amplitude is enlarged by n times. The frequency response curves of the respective similar physical models after the similarity transformation are compared with the frequency response curve of the ossicular prosthesis, and the comparison results are as shown in Figure 4As shown. It can be seen from this figure that after the similarity transformation, the frequency response curves of each similar physical model are consistent with the frequency response curve of the ossicular prosthesis. Therefore, based on the similarity theory, according to the sound transmission characteristics test results of the similar physical model obtained by magnifying the tiny ossicular prosthesis by n times, the sound transmission characteristics of the ossicular prosthesis can be accurately predicted, which provides a corresponding solution for the test requirements in the product design verification stage of the ossicular prosthesis.

[0052] In this embodiment, based on the similarity theory, by obtaining the sound transmission characteristics test results of one or more similar physical models of the ossicular prosthesis, the estimated result of the sound transmission characteristics of the ossicular prosthesis is determined, which improves the flexibility and simplicity of the sound transmission characteristics test of the ossicular prosthesis. At the same time, since the size of the similar physical model is relatively large, it is easy to ensure the consistency of the sound transmission characteristics test. Therefore, the consistency of the sound transmission characteristics test of the ossicular prosthesis can be ensured by ensuring the consistency of the sound transmission characteristics test of the similar physical model of the ossicular prosthesis.

[0053] The technical solution of the method for estimating the sound transmission characteristics of the ossicular prosthesis provided by the embodiment of the present invention is to obtain the test data of the preset index of one or more similar physical models of the ossicular prosthesis, and the magnification ratio of the one or more similar physical models compared with the ossicular prosthesis; based on the similarity theory, according to the test data and the magnification ratio, determine the estimated data of the preset index of the ossicular prosthesis. Since the size of the similar physical model is larger than the size of the ossicular prosthesis, it is easy to ensure the accuracy of the sound transmission characteristics test result. Therefore, the sound transmission characteristics test result of the ossicular prosthesis can be determined by determining the sound transmission characteristics test results of one or more similar physical models of the ossicular prosthesis, so as to improve the flexibility and simplicity of the sound transmission characteristics test of the ossicular prosthesis.

[0054] Embodiment 2

[0055] Figure 5It is a structural block diagram of an ossicular prosthesis sound transmission characteristic estimation system provided by an embodiment of the present invention. This system is used to execute the ossicular prosthesis sound transmission characteristic estimation method provided by any of the above embodiments. The system includes: a vibration generating device 61, which is arranged at one end of a similar physical model 60 of the ossicular prosthesis and is used to drive the similar physical model 60 to vibrate under the action of a test sound signal. The magnification ratio of the similar physical model compared to the ossicular prosthesis is known; an artificial oval window membrane 62, which is arranged at the other end of the similar physical model 60 of the ossicular prosthesis and is used to vibrate under the drive of the similar physical model 60; a vibration detection device 63, which is arranged on the output side of the artificial oval window membrane 62 and is used to collect the vibration data of the artificial oval window membrane 62. And the vibration detection device 63 and the similar physical model 60 are arranged on different sides of the artificial oval window membrane 62; a data processing device 64 is used to determine the test data of a preset index corresponding to the vibration data, and based on the similarity theory, and according to the test data and the magnification ratio, determine the estimated data of the preset index of the ossicular prosthesis.

[0056] The vibration generating device 61 includes a pure tone generator 611, an artificial ear canal 612, and an artificial eardrum 613 arranged in sequence, and the centers of the artificial ear canal 612 and the artificial eardrum 613 are located on the same axis. In this way, the single sound output by the pure tone generator 611 is transmitted to the artificial eardrum 613 through the artificial ear canal 612, causing the artificial eardrum 613 to vibrate.

[0057] Since the two ends of the ossicles in the human body are the eardrum and the oval window membrane respectively, in this embodiment, the similar physical model 60 of the ossicular prosthesis is arranged between the artificial eardrum 613 and the artificial oval window membrane 62. In this way, the vibration of the artificial eardrum 613 will drive the similar physical model 60 of the ossicular prosthesis to vibrate, and the vibration of this similar physical model 60 will drive the artificial oval window membrane 62 to vibrate, that is, this similar physical model 60 transmits the vibration of the artificial eardrum 613 to the artificial oval window membrane 62.

[0058] Among them, the center of the top plate and the center of the base of the similar physical model of the ossicular prosthesis are respectively arranged at the center of the artificial eardrum and the center of the artificial oval window membrane.

[0059] It can be understood that in this embodiment, the vibration information of the artificial oval window membrane can reflect the vibration conduction ability of the similar physical model of the ossicular prosthesis. Therefore, in this embodiment, a vibration detection device is arranged on the output side of the artificial oval window membrane. This vibration detection device is used to collect the vibration data of the artificial oval window membrane, and this vibration detection device and the similar physical model of the ossicular prosthesis are respectively arranged on both sides of the artificial oval window membrane.

[0060] In one embodiment, the vibration detection device is a laser vibrometer. Through the laser vibrometer, any one of the vibration displacement, velocity, or acceleration of the artificial oval window membrane can be directly measured.

[0061] The data processing device is used to obtain the vibration data of the artificial oval window membrane collected by the vibration detection device, such as vibration displacement data, velocity data or acceleration data, then determine the test data of the preset index corresponding to the vibration data, and then determine the estimated data of the preset index of the ossicular prosthesis according to the similarity theory and the similarity ratio between the preset similarity physical model and the ossicular prosthesis.

[0062] The data processing device is also used to determine the mean value of at least two estimated data of the ossicular prosthesis corresponding to at least two vibration data, and use this mean value as the expected estimated data of the preset index of the ossicular prosthesis, where the magnification ratios of the similarity physical models of the ossicular prosthesis corresponding to the at least two vibration data are different from that of the ossicular prosthesis. It can be understood that using the mean value of the estimated data of the preset index corresponding to at least two similarity physical models of the ossicular prosthesis as the estimated data of the preset index of the ossicular prosthesis can reduce the error of determining the estimated data of the preset index of the ossicular prosthesis based on the test data corresponding to a single similarity physical model of the ossicular prosthesis, and improve the accuracy of the estimated data of the preset index of the ossicular prosthesis.

[0063] In one embodiment, after the data processing device obtains the vibration data of the artificial oval window membrane collected by the vibration detection device, it performs a fast Fourier transform on the vibration data in the time domain to obtain frequency domain data, thereby obtaining the corresponding frequency response curve. This frequency response curve can reflect the sound transmission characteristics of the similarity physical model of the ossicular prosthesis. According to the similarity ratio between the similarity physical model and the ossicular prosthesis, and the sound transmission characteristics of the similarity physical model, the sound transmission characteristics of the ossicular prosthesis can be determined.

[0064] The technical solution of the sound transmission characteristic estimation system of the ossicular prosthesis provided by the embodiment of the present invention includes: a vibration generating device arranged at one end of the similarity physical model of the ossicular prosthesis, which is used to output a vibration signal under the action of a test sound signal and drive the similarity physical model to vibrate; an artificial oval window membrane arranged at the other end of the similarity physical model of the ossicular prosthesis, which is used to vibrate under the drive of the similarity physical model; a vibration detection device arranged on one side of the artificial oval window membrane, which is used to collect the vibration data of the artificial oval window membrane, and the vibration detection device and the similarity physical model are arranged on different sides of the artificial oval window membrane; the data processing device is used to determine the test data of the preset index corresponding to the vibration data, and based on the similarity theory, and according to the test data and the magnification ratio, determine the estimated data of the preset index of the ossicular prosthesis. Since the size of the similarity physical model is larger than that of the ossicular prosthesis, it is easy to ensure the accuracy of the test result of its sound transmission characteristics. Therefore, the test result of the sound transmission characteristics of the ossicular prosthesis can be determined by determining the test results of the sound transmission characteristics of one or more similarity physical models of the ossicular prosthesis, so as to improve the flexibility and simplicity of the test of the sound transmission characteristics of the ossicular prosthesis.

[0065] Embodiment 3

[0066] Figure 6 The following is a structural block diagram of the data processing device provided by the embodiment of the present invention. As Figure 6 shown, the device includes a processor 701, a memory 702, an input device 703, and an output device 704; the number of processors 701 in the device can be one or more, Figure 6 and one processor 701 is taken as an example herein; the processor 701, the memory 702, the input device 703, and the output device 704 in the device can be connected through a bus or other means, Figure 6 and connection through a bus is taken as an example herein.

[0067] The memory 702, as a computer-readable storage medium, can be used to store software programs, computer-executable programs, and modules, such as program instructions / modules corresponding to the method for estimating the sound transmission characteristics of the ossicular prosthesis in the embodiment of the present invention. The processor 701 executes various functional applications and data processing of the device by running the software programs, instructions, and modules stored in the memory 702, that is, implements the above-mentioned method for estimating the sound transmission characteristics of the ossicular prosthesis.

[0068] The memory 702 mainly includes a program storage area and a data storage area. Among them, the program storage area can store an operating system and application programs required for at least one function; the data storage area can store data created according to the use of the terminal, etc. In addition, the memory 702 can include a high-speed random access memory, and can also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other non-volatile solid-state storage devices. In some instances, the memory 702 can further include a memory remotely set relative to the processor 701, and these remote memories can be connected to the device through a network. Examples of the above-mentioned network include but are not limited to the Internet, an enterprise internal network, a local area network, a mobile communication network, and combinations thereof.

[0069] The input device 703 can be used to receive input digital or character information, and generate key signal inputs related to the user settings and function controls of the device.

[0070] The output device 704 can include a display device such as a display screen, for example, the display screen of a user terminal.

[0071] Embodiment 4

[0072] The embodiment of the present invention further provides a storage medium containing computer-executable instructions, and the computer-executable instructions are used to execute a method for estimating the sound transmission characteristics of an ossicular prosthesis when executed by a computer processor. The method includes:

[0073] Obtain the test data of the preset indexes of one or more similar physical models of the ossicular prosthesis, and the magnification ratio of the one or more similar physical models relative to the ossicular prosthesis;

[0074] Based on the similarity theory, determine the estimated data of the preset indexes of the ossicular prosthesis according to the test data and the magnification ratio.

[0075] Certainly, the computer-executable instructions of a storage medium provided by an embodiment of the present invention are not limited to the method operations described above, and can also execute related operations in the method for estimating the sound transmission characteristics of an ossicular prosthesis provided by any embodiment of the present invention.

[0076] From the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software and necessary general-purpose hardware. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as a floppy disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (FLASH), a hard disk, or an optical disc of a computer, etc., including several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the method for estimating the sound transmission characteristics of an ossicular prosthesis described in each embodiment of the present invention.

[0077] It should be noted that in the embodiments of the above-mentioned test device for the sound transmission characteristics of an ossicular prosthesis, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of the functional units are only for the convenience of mutual distinction and do not limit the protection scope of the present invention.

[0078] Note that the above is only a preferred embodiment of the present invention and the applied technical principle. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, re-adjustments, and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Without departing from the concept of the present invention, more other equivalent embodiments can be included, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A method for estimating the sound transmission characteristics of an ossicular prosthesis, characterized in that, it includes: obtaining test data of preset indicators of one or more similar physical models of the ossicular prosthesis, and the magnification ratio of the one or more similar physical models compared to the ossicular prosthesis, where the preset indicators are natural vibration displacement and / or natural vibration frequency response; based on the similarity theory, determining the estimated data of the preset indicators of the ossicular prosthesis according to the test data and the magnification ratio; Among them, the similarity theory means that when the ossicular prosthesis is only magnified by n times in size to obtain a similar physical model while other physical quantities remain unchanged, the ratio of the natural vibration frequency response of the ossicular prosthesis to the natural vibration frequency response of its similar physical model is , and the ratio of the natural vibration displacement of the ossicular prosthesis to the natural vibration displacement of its similar physical model is .

2. The method according to claim 1, characterized in that, it further includes: when the number of the similar physical models is at least two: determining the estimated data of the preset indicators of the ossicular prosthesis corresponding to each similar physical model according to the test data and the magnification ratio to obtain initial estimated data; determining the mean value of the initial estimated data of the ossicular prosthesis corresponding to the at least two similar physical models, and taking the mean value as the estimated data of the preset indicators of the ossicular prosthesis.

3. An ossicular prosthesis sound transmission characteristic estimation system, characterized in that, for executing the ossicular prosthesis sound transmission characteristic estimation method according to claim 1, including: a vibration generating device, arranged at one end of a similar physical model of the ossicular prosthesis, for driving the similar physical model to vibrate under the action of a test sound signal, where the magnification ratio of the similar physical model compared to the ossicular prosthesis is known; an artificial oval window membrane, arranged at the other end of the similar physical model of the ossicular prosthesis, for vibrating under the drive of the similar physical model; a vibration detection device, arranged on the output side of the artificial oval window membrane, for obtaining the vibration data of the artificial oval window membrane, and the vibration detection device and the similar physical model are arranged on different sides of the artificial oval window membrane; a data processing device, for determining the test data of the preset indicators corresponding to the vibration data, and based on the similarity theory, and according to the test data and the magnification ratio, determining the estimated data of the preset indicators of the ossicular prosthesis, where the vibration data includes natural vibration displacement data and / or natural vibration frequency data.

4. The system according to claim 3, characterized in that, the vibration generating device includes a pure tone generator, an artificial ear canal and an artificial eardrum arranged in sequence, and the centers of the artificial ear canal and the artificial eardrum are on the same axis.

5. The system according to claim 4, characterized in that, the center of the top plate of the similar physical model is arranged at the center of the artificial eardrum, and the base of the similar physical model is arranged at the center of the artificial oval window membrane.

6. The system according to claim 3, characterized in that, the data processing device is further used to determine the mean value of at least two estimated data of the ossicular prosthesis corresponding to at least two vibration data, and take the mean value as the expected estimated data of the preset indicators of the ossicular prosthesis, where the magnification ratios of the similar physical models of the ossicular prosthesis corresponding to the at least two vibration data compared to the ossicular prosthesis are different.

7. A data processing device, characterized in that, the data processing device includes: one or more processors; A storage device for storing one or more programs; When the one or more programs are executed by the one or more processors, the one or more processors implement the method for estimating the sound transmission characteristics of the ossicular prosthesis as described in claim 1 or 2.

8. A storage medium containing computer-executable instructions, characterized in that the computer-executable instructions are used to execute the method for estimating the sound transmission characteristics of the ossicular prosthesis as described in claim 1 or 2 when executed by a computer processor.

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