A middle ear prosthesis vibration conduction detection device and system

Abstract

The application discloses a middle ear prosthesis vibration conduction detection device and system, the vibration conduction detection device includes sound source, outer ear model, detection chamber and vibration detection mechanism, artificial eardrum is arranged between outer ear model and detection chamber;The detection chamber is used for placing the middle ear prosthesis, and the middle ear prosthesis can vibrate with artificial eardrum, and the vibration detection mechanism is used for detecting the vibration amplitude and frequency of the middle ear prosthesis.The application builds the physical model of middle ear vibration, and the vibration conduction detection equipment is composed of the structure such as sound source, outer ear model, artificial eardrum, detection chamber and vibration detection mechanism, namely the conduction process of middle ear vibration can be simulated, the vibration amplitude and frequency of the middle ear prosthesis are measured through the vibration detection mechanism, the vibration curve of the characteristic point of the middle ear prosthesis can be acquired, and the vibration conduction effect of the middle ear prosthesis is evaluated, which provides a feasible research mode for realizing the qualitative evaluation of middle ear sound conduction.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, specifically relating to a middle ear prosthesis vibration conduction detection device and system. Background Technology

[0002] The ear is divided into three parts: the outer ear, middle ear, and inner ear. The tympanic membrane, located at the end of the external auditory canal, is 8-9 mm in diameter and about 0.1 mm thick, and consists of three layers. The outer ear is composed of the auricle, external auditory canal, and tympanic membrane, while the inner ear is mainly composed of the vestibule, semicircular canals, and cochlea. The middle ear consists of the tympanic cavity, eustachian tube, mastoid sinus, and mastoid air cells. The tympanic cavity is an irregularly shaped cavity containing air within the petrous part of the temporal bone, surrounded by six walls. It contains three ossicles—the malleus, incus, and stapes—as well as ligaments, muscles, blood vessels, and nerves. The eustachian tube connects the nasopharynx and the tympanic cavity, is 3.5–4.0 cm long, and runs obliquely anteromedially and inferiorly. It is divided into a bony part and a cartilaginous part; the junction of the two parts is called the isthmus of the eustachian tube, which is the narrowest point of the eustachian tube lumen. The mastoid sinus is located behind the superior tympanic recess, opening anteriorly into the upper part of the posterior wall of the tympanic cavity and posteriorly connecting with the mastoid air cells, serving as a passage between the tympanic cavity and the mastoid air cells. The mastoid air cells are numerous air-filled cavities of varying sizes within the mastoid region of the temporal bone, interconnected and lined with mucous membrane, continuous with the mucous membranes of the mastoid sinus and the tympanic cavity. Sound conduction in the middle ear is essentially a mechanical process of vibrational conduction. Sound waves from the external ear cause vibrations in the tympanic membrane, which are transmitted via the ossicular chain to the stapes footplate. The vibration of the stapes footplate causes vibrations in the inner ear lymphatic fluid, thus transmitting sound into the inner ear.

[0003] Chronic otitis media or other middle ear diseases can easily damage the essential conditions for sound conduction, such as the tympanic membrane, ossicular chain, tympanic cavity mucosa, and eustachian tube, leading to decreased hearing conductivity. Tympanic cavity reconstruction surgery is a good way to help these patients restore their hearing, which requires the use of middle ear prostheses such as artificial ossicles and middle ear support materials (middle ear anti-adhesion materials). For patients with eustachian tube dysfunction, middle ear support materials need to be placed to prevent the formation of middle ear effusion and granulation tissue, thereby improving the hearing conduction effect after tympanic cavity reconstruction. Currently, the hearing reconstruction effect after tympanic cavity reconstruction is mostly assessed by pure-tone audiometry, and it is not yet possible to predict the postoperative hearing reconstruction effect before surgery. At present, the impact of various types of artificial ossicles and middle ear support materials on middle ear sound conduction is mainly based on clinical trials, which are difficult to qualitatively detect and evaluate. This makes it difficult to improve the materials and structures of artificial ossicles and middle ear support materials, which poses certain difficulties in improving the hearing reconstruction effect after tympanic cavity reconstruction. Summary of the Invention

[0004] The purpose of this invention is to provide a middle ear prosthesis vibration conduction detection device and system to solve the above-mentioned problems existing in the prior art.

[0005] To achieve the above objectives, the present invention employs the following technical solution: a middle ear prosthesis vibration conduction detection device, comprising a sound source, an outer ear model, a detection chamber, and a vibration detection mechanism. An artificial tympanic membrane is disposed between the outer ear model and the detection chamber. The sound source is used to generate sound signals and enter the outer ear model to cause the artificial tympanic membrane to vibrate. The detection chamber is used to place a middle ear prosthesis, and the middle ear prosthesis can vibrate together with the artificial tympanic membrane. The vibration detection mechanism is used to detect the vibration amplitude and frequency of the middle ear prosthesis.

[0006] As an optional design structure of the above technical solution, the detection chamber is provided with a movable support platform, which is used to support the middle ear prosthesis. The movable support platform can be close to the artificial tympanic membrane so that the middle ear prosthesis vibrates together with the artificial tympanic membrane.

[0007] As an optional design structure of the above technical solution, the movable support platform is equipped with a lifting drive mechanism, which is used to drive the middle ear prosthesis on the movable support platform to move closer to or away from the artificial tympanic membrane.

[0008] As an optional design structure of the above technical solution, the lifting drive mechanism includes a drive motor, the output end of which is connected to a lead screw, and the movable bearing platform is provided with a lead screw sleeve adapted to the lead screw.

[0009] As an optional design structure of the above technical solution, the movable support platform includes a platform plate disposed in the detection chamber. The platform plate has an installation hole corresponding to the position of the artificial tympanic membrane. A support plate is installed in the installation hole. The support plate has several through holes. The vibration detection mechanism is disposed below the through holes and detects the vibration amplitude and frequency of the middle ear prosthesis on the support plate.

[0010] As an optional design structure of the above technical solution, the artificial tympanic membrane is a rubber film.

[0011] As an optional design structure of the above technical solution, the outer ear model is made of resin material based on 3D printing and is funnel-shaped to simulate the sound collection process of the auricle and external auditory canal.

[0012] As an optional design structure of the above technical solution, the outer ear model is equipped with a sound intensity detection module.

[0013] As an optional design structure of the above technical solution, it also includes a soundproof box, in which the sound source, the outer ear model, the detection chamber and the vibration detection mechanism are all set up.

[0014] As an optional design structure of the above technical solution, the soundproof box is provided with a partition, and the outer ear model is placed on the partition.

[0015] As an optional design structure of the above technical solution, the soundproof box is made of cold-rolled steel plates and the inner wall of the soundproof box is lined with sound-absorbing cotton.

[0016] As an optional design structure of the above technical solution, it also includes a high-speed camera, which is used to record the condition of the detection chamber in real time.

[0017] As an optional design structure of the above technical solution, the middle ear prosthesis includes at least one of artificial ossicles and middle ear support material.

[0018] As an optional design structure for the above technical solution, the vibration detection mechanism is a laser Doppler vibration meter.

[0019] On the other hand, the present invention adopts the following technical solution: a middle ear prosthesis vibration conduction detection system, including the above-mentioned middle ear prosthesis vibration conduction detection device, and further including an analysis and evaluation module. The analysis and evaluation module is used to analyze the vibration curve of the middle ear prosthesis characteristic points based on the vibration amplitude and frequency of the middle ear prosthesis detected by the vibration detection mechanism, and evaluate the vibration conduction effect of the middle ear prosthesis.

[0020] The beneficial effects of this invention are as follows:

[0021] This invention provides a middle ear prosthesis vibration conduction detection device and system. By constructing a physical model of middle ear vibration, the vibration conduction detection device is composed of a sound source, an outer ear model, an artificial tympanic membrane, a detection chamber, and a vibration detection mechanism. This simulates the conduction process of middle ear vibration. By measuring the vibration amplitude and frequency of the middle ear prosthesis through the vibration detection mechanism, the vibration curves of characteristic points of the middle ear prosthesis can be obtained, and the vibration conduction effect of the middle ear prosthesis can be evaluated. This provides a feasible research method for qualitative evaluation of middle ear sound conduction. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a middle ear prosthesis vibration conduction detection device according to one embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the support plate in one embodiment of the present invention.

[0024] In the diagram: 1-Sound source; 2-External ear model; 3-Detection chamber; 4-Vibration detection mechanism; 5-Artificial tympanic membrane; 6-Drive motor; 7-Screw rod; 8-Platform plate; 9-Bearing plate; 10-Through hole; 11-Soundproof box; 12-Baffle; 13-High-speed camera; 14-Sound intensity detection module. Detailed Implementation

[0025] Example

[0026] like Figure 1 and Figure 2 As shown, this embodiment provides a middle ear prosthesis vibration conduction detection device, including a sound source 1, an outer ear model 2, a detection chamber 3, and a vibration detection mechanism 4. An artificial tympanic membrane 5 is provided between the outer ear model 2 and the detection chamber 3. The sound source 1 is used to generate sound signals and enter the outer ear model 2 to make the artificial tympanic membrane 5 vibrate. The detection chamber 3 is used to place the middle ear prosthesis to be tested, and the middle ear prosthesis can vibrate together with the artificial tympanic membrane 5. The vibration detection mechanism 4 is used to detect the vibration amplitude and frequency of the middle ear prosthesis to be tested.

[0027] Sound source 1 can emit sound signals with different vibration amplitudes and frequencies. The outer ear model 2 simulates the sound collection process of the outer ear. The sound signal from sound source 1 enters the outer ear model 2, causing the artificial tympanic membrane 5 to vibrate. The artificial tympanic membrane 5 transmits the vibration to the middle ear prosthesis within the testing chamber 3, causing the middle ear prosthesis to vibrate. The vibration detection mechanism 4 detects the vibration amplitude and frequency of the middle ear prosthesis. Through multiple tests, vibration curves of characteristic points of the middle ear prosthesis can be obtained. Based on these vibration curves, the vibration transmission effect of the middle ear prosthesis can be evaluated.

[0028] The middle ear prosthesis to be tested includes at least one artificial ossicle and middle ear support material. This invention can evaluate vibration transmission under different tympanic cavity conditions by changing the related middle ear vibration influencing factors such as the artificial tympanic membrane, artificial ossicle, and middle ear support material, and provides a feasible qualitative test for the functional verification of artificial ossicles, tympanic cavity filling materials, etc.

[0029] In this embodiment, the vibration detection mechanism 4 is a laser Doppler vibrometer. A laser Doppler vibrometer is a measuring instrument that uses the laser Doppler effect, optical heterodyne interference and other principles to measure the vibration of an object. Compared with traditional sensors such as accelerometers, it has the advantages of long-distance measurement, non-contact, high spatial resolution, short measurement time, wide response bandwidth and high velocity resolution. Currently, laser Doppler vibrometer technology has been conveniently applied to the measurement of middle ear vibration.

[0030] To prevent external noise from affecting the test results of the vibration detection mechanism 4, the vibration transmission detection device is also equipped with a soundproof box 11. The sound source 1, the outer ear model 2, the detection chamber 3, and the vibration detection mechanism 4 are all housed within the soundproof box 11. The soundproof box 11 has a partition 12 inside, and the outer ear model 2 is mounted on the partition 12. The soundproof box 11 is a closed structure. The sound source 1 is located on the inner top wall of the soundproof box 11, directly above the outer ear model 2. The detection chamber 3 and the vibration detection mechanism 4 are located below the partition 12. The sound signal emitted by the sound source 1 can directly enter the outer ear model 2 and cause the artificial tympanic membrane 5 to vibrate. The soundproof box 11 is constructed from cold-rolled steel plates to ensure structural stability. The inner wall of the soundproof box 11 is lined with sound-absorbing cotton, which effectively isolates external sound transmission and improves the accuracy of the test.

[0031] The sound source 1 is a calibrated standard sound source capable of emitting sounds with varying amplitudes and frequencies. The outer ear model 2 is made of resin material using 3D printing and is funnel-shaped to simulate the sound collection process of the auricle and external auditory canal. The artificial tympanic membrane 5 can be made of rubber or other types of membranes. The mechanical properties of the rubber membrane are similar to those of a normal tympanic membrane, effectively simulating its vibration under sound. The outer ear model 2 is equipped with a sound intensity detection module, which includes a microphone to detect the sound intensity of the outer ear model 2.

[0032] In this embodiment, the detection chamber 3 is equipped with a movable support platform, which is used to support the middle ear prosthesis to be tested. The movable support platform can be close to the artificial tympanic membrane 5 so that the middle ear prosthesis vibrates together with the artificial tympanic membrane 5. The movable support platform can move within the detection chamber 3. First, the movable support platform is moved away from the artificial tympanic membrane 5. After the middle ear prosthesis to be tested is placed on the movable support platform, the movable support platform is moved closer to the artificial tympanic membrane 5 so that the middle ear prosthesis to be tested vibrates together with the artificial tympanic membrane 5. The vibration detection mechanism 4 detects the vibration amplitude and frequency of the middle ear prosthesis.

[0033] Preferably, the movable support platform is equipped with a lifting drive mechanism, which is used to drive the middle ear prosthesis on the movable support platform to move closer to or further away from the artificial tympanic membrane 5, facilitating the detection of the middle ear prosthesis. Specifically, the lifting drive mechanism includes a drive motor 6, the output end of which is connected to a lead screw 7, and the movable support platform is provided with a lead screw sleeve adapted to the lead screw 7. The drive motor 6 can be fixed to the bottom surface of the partition 12, the bottom of the drive motor 6 is connected to the lead screw 7, and the lead screw sleeve is embedded in the movable support platform, which can only move up and down. When the drive motor 6 drives the lead screw 7 to rotate forward, the movable support platform gradually descends, and the middle ear prosthesis on the movable support platform moves away from the artificial tympanic membrane 5; when the drive motor 6 drives the lead screw 7 to rotate in reverse, the movable support platform gradually rises, and the middle ear prosthesis on the movable support platform moves closer to the artificial tympanic membrane 5. It should be noted that the lifting drive mechanism can also be implemented using a structure such as a motor and a sprocket assembly, and the present invention is not limited to this.

[0034] In this embodiment, the movable support platform includes a platform plate 8 disposed within the detection chamber 3. The platform plate 8 has mounting holes corresponding to the position of the artificial tympanic membrane 5. A support plate 9 is installed within the mounting holes. The support plate 9 has several through holes 10. The vibration detection mechanism 4 is disposed below the through holes 10 and detects the vibration amplitude and frequency of the middle ear prosthesis to be tested on the support plate 9. The platform plate 8 is a rigid plate, and its lifting and lowering can be controlled by a drive motor 6. A detachable support plate 9 is disposed in the middle of the platform plate 8. The vibration of the artificial tympanic membrane 5 can be measured using a laser Doppler vibration meter after removing the support plate 9. The artificial tympanic membrane 5 can be adjusted to use artificial tympanic membranes of different materials or perforated tympanic membranes to evaluate the impact of different tympanic membrane conditions on the vibration transmission effect of the middle ear prosthesis.

[0035] The vibration transmission detection device also includes a high-speed camera 13, which is used to record the condition of the detection chamber 3 in real time. The high-speed camera 13 is installed inside the soundproof box 11 and can clearly record the experimental process inside the soundproof box 11 in real time.

[0036] In the vibration transmission detection device of the present invention, the soundproof box 11 can isolate the transmission of external sound. The partition 12 divides the soundproof box 11 into upper and lower layers. The upper layer holds the sound source 1, the outer ear model 2 is embedded in the partition 12, the artificial tympanic membrane 5 is fixed to the inner port of the outer ear, and the laser Doppler vibration meter, etc., are placed in the lower layer. The sound source 1 can emit sounds with different vibration amplitudes and frequencies. The outer ear model 2 can simulate the sound collection process of the outer ear. The sound signal entering the outer ear model 2 causes the artificial tympanic membrane 5 to vibrate, and the artificial tympanic membrane 5 transmits the vibration to the middle ear prosthesis. The movable support platform can hold the middle ear prosthesis and related structures, and the position of the movable support platform can be adjusted by the drive motor 6. The laser Doppler vibration meter measures the vibration curve of the feature point of interest of the middle ear prosthesis. The platform plate 8 has a support plate 9. By removing the support plate 9, the vibration amplitude and frequency of the artificial tympanic membrane 5 can be measured by the laser Doppler vibration meter. The high-speed camera 13 can monitor the test situation inside the soundproof box 11 in real time and record the entire test process.

[0037] This embodiment also provides a middle ear prosthesis vibration conduction detection system, including the aforementioned middle ear prosthesis vibration conduction detection device, and further including an analysis and evaluation module. The analysis and evaluation module is used to analyze the vibration curves of characteristic points of the middle ear prosthesis based on the vibration amplitude and frequency detected by the vibration detection mechanism 4, and to evaluate the vibration conduction effect of the middle ear prosthesis. This invention, by constructing a physical model of middle ear vibration, uses a vibration conduction detection device composed of a sound source 1, an outer ear model 2, an artificial tympanic membrane 5, a detection chamber 3, and a vibration detection mechanism 4. This simulates the conduction process of middle ear vibration. The vibration amplitude and frequency of the middle ear prosthesis are measured using a laser Doppler vibrometer, and the analysis and evaluation module analyzes the vibration curves of characteristic points of the middle ear prosthesis to evaluate the vibration conduction effect. This provides a feasible research method for qualitative evaluation of middle ear sound conduction.

[0038] In the description of this invention, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. They can refer to fixed connections, detachable connections, or integral connections; they can be mechanical or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this invention. Furthermore, the specific features and structures described in the embodiments are included in at least one implementation method. Those skilled in the art can combine features from different implementation methods without contradiction. The scope of protection of this invention is not limited to the specific implementation methods described above. Based on the basic technical concept of this invention, implementation methods that can be conceived by those skilled in the art without creative effort are all within the scope of protection of this invention.

Claims

1. A middle ear prosthesis vibration conduction detection system, characterized in that, The device includes a middle ear prosthesis vibration conduction detection device, which includes a sound source (1), an outer ear model (2), a detection chamber (3), and a vibration detection mechanism (4). An artificial tympanic membrane (5) is provided between the outer ear model (2) and the detection chamber (3). The sound source (1) is used to generate sound signals and enter the outer ear model (2) to make the artificial tympanic membrane (5) vibrate. The detection chamber (3) is used to place the middle ear prosthesis, and the middle ear prosthesis can vibrate together with the artificial tympanic membrane (5). The vibration detection mechanism (4) is used to detect the vibration amplitude and frequency of the middle ear prosthesis. The detection chamber (3) is equipped with a movable support platform for supporting the middle ear prosthesis. The movable support platform is equipped with a lifting drive mechanism for driving the middle ear prosthesis on the movable support platform to move closer to or further away from the artificial tympanic membrane (5) so that the middle ear prosthesis vibrates together with the artificial tympanic membrane (5). The movable support platform includes a platform plate (8) set in the detection chamber (3). The platform plate (8) has an installation hole at the position corresponding to the artificial tympanic membrane (5). A support plate (9) is installed in the installation hole. The support plate (9) has several through holes (10). The vibration detection mechanism (4) is set below the through holes (10) and detects the vibration amplitude and frequency of the middle ear prosthesis on the support plate (9). It also includes an analysis and evaluation module, which is used to analyze the vibration curve of the middle ear prosthesis characteristic points and evaluate the vibration transmission effect of the middle ear prosthesis based on the vibration amplitude and frequency of the middle ear prosthesis detected by the vibration detection mechanism (4); The outer ear model (2) is made of resin material based on 3D printing. Its shape is funnel-shaped and is used to simulate the sound collection process of the auricle and external auditory canal. It also includes a soundproof box (11), in which the sound source (1), the outer ear model (2), the detection chamber (3) and the vibration detection mechanism (4) are all located; The vibration detection mechanism (4) is a laser Doppler vibration meter.

2. The middle ear prosthesis vibration conduction detection system according to claim 1, characterized in that, The lifting drive mechanism includes a drive motor (6), the output end of which is connected to a lead screw (7), and the movable bearing platform is provided with a lead screw sleeve adapted to the lead screw (7).

3. The middle ear prosthesis vibration conduction detection system according to claim 1, characterized in that, The artificial tympanic membrane (5) is a rubber film; the external ear model (2) is equipped with a sound intensity detection module.

4. The middle ear prosthesis vibration conduction detection system according to claim 1, characterized in that, The soundproof box (11) is equipped with a partition (12), and the outer ear model (2) is set on the partition (12); the soundproof box (11) is made of cold-rolled steel plates, and the inner wall of the soundproof box (11) is provided with sound-absorbing cotton; it also includes a high-speed camera (13), which is used to record the condition of the detection chamber (3) in real time.

5. The middle ear prosthesis vibration conduction detection system according to claim 1, characterized in that, The middle ear prosthesis includes at least one of artificial ossicles and middle ear support material.

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