An acoustic impedance testing probe
By using a split design and a shared pipeline for the acoustic impedance test probe, the problems of easy damage and difficult maintenance of traditional probes are solved, achieving higher testing accuracy and easier maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI LINGKANG MEDICAL EQUIPMENT CO LTD
- Filing Date
- 2025-03-28
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional acoustic impedance testing probes are prone to sensor damage under negative pressure, and the potting process makes disassembly and repair difficult, leading to probe failure.
A split-type acoustic impedance test probe was designed, including a probe body, a probe nozzle, and a probe tail shell. The components are highly integrated, share a common probe nozzle conduit, and adopt a sealing gasket and limiting groove structure to ensure connection stability and flexibility.
It effectively avoids the inaccurate testing problem caused by blockage of traditional probes, improves the practicality and ease of maintenance of the probe, and adapts to different ear canal sizes.
Smart Images
Figure CN224484042U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of test probes, and in particular to a probe for acoustic impedance testing. Background Technology
[0002] An acoustic impedance testing probe is a device used for ultrasonic testing, primarily to measure the acoustic impedance of biological tissues. After the probe emits an ultrasonic signal, a receiver captures the reflected signal. The measurement circuit converts these signals into digital signals, processes them, and ultimately generates an acoustic impedance graph. This process helps in studying the applications of acoustic impedance in medicine, particularly in tissue characterization and disease diagnosis.
[0003] In existing technologies, traditional probes use integrated potting encapsulation. In particular, when the probe tube enters the ear canal for testing, there are positive and negative pressures. When there is negative pressure, if there is fluid in the ear, it can easily be drawn into the probe and damage the sensor. The potting process uses epoxy resin, which is hardened and difficult to disassemble. During maintenance, it is easy to damage the sensor and probe structure, resulting in the probe being scrapped. Utility Model Content
[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a probe for acoustic impedance testing, so as to solve the technical problems mentioned in the background art.
[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0006] An acoustic impedance testing probe includes a probe body, which is mainly composed of a shell, a tympanogram testing sound generation unit, an acoustic reflection testing sound generation unit, a receiving sensor, and a pressure adapter. The tympanogram testing sound generation unit and the acoustic reflection testing sound generation unit are symmetrically arranged inside the shell. The receiving sensor and the pressure adapter are located on both sides of the tympanogram testing sound generation unit. The tympanogram testing sound generation unit, the acoustic reflection testing sound generation unit, the receiving sensor, and the pressure adapter are all connected to the shell through a bracket.
[0007] The probe nozzle is connected to the top of the probe body. The top of the probe nozzle has a ring array with three transmission channels. Two of the transmission channels are connected to the sound reflection test sound generation unit and the receiving sensor, respectively. The other transmission channel is connected to the tympanogram test sound generation unit and the air pressure penetration tube.
[0008] The probe tail shell is connected to the bottom of the probe body. The probe signal connection line is fixedly connected to one side of the bottom of the probe tail shell, and the rear air nozzle connected to the air pressure adapter is fixedly connected to the other side.
[0009] Furthermore, a sealing gasket is provided at the bottom of the probe nozzle, and an opening is provided on the sealing gasket to avoid the tympanic image test sound generation unit, the sound reflection test sound generation unit, the receiving sensor and the air pressure adapter.
[0010] Furthermore, a positioning groove is provided at the bottom of the probe nozzle corresponding to the positions of the tympanic image test sound generation unit, the sound reflection test sound generation unit, the receiving sensor, and the air pressure adapter pipe. The positioning groove is connected to the transmission pipeline through a connecting groove.
[0011] Furthermore, the top of the housing is threaded with a cap, and the cap has a circular hole for the probe nozzle to extend out.
[0012] Furthermore, the top of the probe nozzle is provided with two protrusions at intervals from top to bottom to form a limiting part, and a limiting groove is formed between the two limiting parts.
[0013] Furthermore, the top edge of the probe tail shell is connected in a ring array with multiple connecting plates for abutting against the inner wall of the outer shell, so that the probe tail shell can be inserted into the outer shell.
[0014] In summary, this utility model has at least one of the following beneficial technical effects:
[0015] This acoustic impedance testing probe integrates the tympanogram testing unit, the acoustic reflection testing unit, the receiving sensor, and the air pressure adapter into the probe body, effectively reducing the size of the acoustic impedance probe and making it more flexible in use. By sharing a probe nozzle and unified pipeline between the tympanogram testing unit and the air pressure adapter, the inaccuracy caused by blockage of a transmission port in traditional separate transmission methods can be effectively avoided, thus improving the practicality of the acoustic impedance testing probe. Attached Figure Description
[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a schematic diagram of the structure of a probe for acoustic impedance testing according to the present invention.
[0018] Figure 2 This is a schematic diagram of the internal structure of a probe for acoustic impedance testing according to the present invention.
[0019] Figure 3This is a schematic diagram of the structure of the bracket, sealing gasket and probe nozzle used in an acoustic impedance testing probe according to the present invention.
[0020] Figure 4 This is a schematic diagram of the elevation angle structure of the probe nozzle in an acoustic impedance testing probe according to the present invention.
[0021] In the diagram, 1. Probe body; 101. Outer shell; 102. Tympanic cavity test sound generation unit; 103. Sound reflection test sound generation unit; 104. Receiving sensor; 105. Air pressure adapter tube; 2. Probe nozzle; 3. Probe tail shell; 4. Bracket; 5. Transmission pipeline; 6. Probe signal connection line; 7. Rear end air nozzle; 8. Sealing gasket; 9. Opening; 10. Positioning groove; 11. Connecting groove; 12. Cap; 13. Round hole; 14. Limiting part; 15. Limiting groove; 16. Connecting plate. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings. Example
[0023] Reference Figure 1 - Figure 4 The present invention discloses a probe for acoustic impedance testing, comprising a probe body 1, which mainly consists of a shell 101, a tympanogram testing sound generation unit 102, an acoustic reflection testing sound generation unit 103, a receiving sensor 104, and a pressure adapter 105. The tympanogram testing sound generation unit 102 and the acoustic reflection testing sound generation unit 103 are symmetrically arranged inside the shell 101. The receiving sensor 104 and the pressure adapter 105 are arranged on both sides of the tympanogram testing sound generation unit 102. The tympanogram testing sound generation unit 102, the acoustic reflection testing sound generation unit 103, the receiving sensor 104, and the pressure adapter 105 are all connected to the shell 101 through a bracket 4.
[0024] The probe nozzle 2 is connected to the top of the probe body 1. The top of the probe nozzle 2 has three transmission channels 5 arranged in a ring array. Two of the transmission channels 5 are connected to the sound reflection test sound generation unit 103 and the receiving sensor 104, respectively. The other transmission channel 5 is connected to the tympanogram test sound generation unit 102 and the air pressure penetration tube.
[0025] The probe tail shell 3 is connected to the bottom of the probe body 1. The probe signal connection line 6 is fixedly connected to one side of the bottom of the probe tail shell 3, and the rear air nozzle 7, which is connected to the air pressure adapter pipe 105, is fixedly connected to the other side.
[0026] In this embodiment, observation Figure 1It can be observed that by dividing the acoustic impedance test probe into a probe body 1, a probe nozzle 2, and a probe tail shell 3, with the probe nozzle 2 connected to the top of the probe body 1 and the probe tail shell 3 connected to the bottom of the probe body 1, sound waves can be emitted through the detection element inside the probe body 1. These sound waves are emitted through the probe nozzle 2 to test the ear canal. The test results are then transmitted to the equipment for analysis via the probe signal connection line 6 at the bottom of the probe tail shell 3 to complete the ear canal test. Furthermore, the separate design of the probe body 1, probe nozzle 2, and probe tail shell 3 facilitates the maintenance of the acoustic impedance probe, making it easier to clean and replace damaged components during maintenance.
[0027] Subsequently, further integration Figure 2 and Figure 3 It can be observed that the probe body 1 mainly consists of a housing 101, a tympanogram testing sound-generating unit 102, a sound reflection testing sound-generating unit 103, a receiving sensor 104, and a pneumatic adapter 105. The tympanogram testing sound-generating unit 102 and the sound reflection testing sound-generating unit 103 are symmetrically arranged inside the housing 101. The receiving sensor 104 and the pneumatic adapter 105 are located on both sides of the tympanogram testing sound-generating unit 102. Both the sensor 104 and the air pressure adapter 105 are connected to the housing 101 via the bracket 4. The bottom of the probe tail shell 3 is fixedly connected to the rear air nozzle 7 on the side away from the probe signal connection line 6. The rear air nozzle 7 is connected to the air pressure adapter 105, so as to integrate the tympanogram test sound generation unit 102, the sound reflection test sound generation unit 103, the receiving sensor 104 and the air pressure adapter 105 into the housing 101, effectively reducing the volume of the acoustic impedance test probe and making the use of the acoustic impedance probe more flexible.
[0028] Then, looking at Figure 4 It can be observed that the top of the probe nozzle 2 has three transmission channels 5 arranged in a ring array. Two of the transmission channels 5 are connected to the sound reflection test sound generation unit 103 and the receiving sensor 104, respectively. The other transmission channel 5 is connected to the tympanogram test sound generation unit 102 and the air pressure connection tube. At the same time, the bottom of the probe nozzle 2 has a positioning groove 10 corresponding to the positions of the tympanogram test sound generation unit 102, the sound reflection test sound generation unit 103, the receiving sensor 104 and the air pressure connection tube 105. The positioning groove 10 is connected to the transmission channel 5 through the connecting groove 11.
[0029] At this time, when the acoustic impedance test probe is in use, it can emit sound waves through the tympanogram test sound generation unit 102 and the sound reflection test sound generation unit 103. The sound waves are emitted through the corresponding transmission pipe 5 to detect inside the ear canal. Then, the reflected sound waves are received by the receiving sensor 104. Finally, the data is transmitted to the device through the probe signal connection line 6 to complete the ear canal detection.
[0030] Because tympanogram testing requires simultaneous sound production and pressure application to assess volume and middle ear function, it is necessary to combine... Figure 3 and Figure 4 It can be observed that while the tympanogram test sound-generating unit 102 is operating, the rear air nozzle 7 will also supply air synchronously, allowing the gas to enter the transmission pipeline 5 through the air pressure adapter 105. This allows the tympanogram test sound-generating unit 102 and the air pressure adapter 105 to share the same pipeline as the probe nozzle 2. This effectively avoids the defects of traditional separate transmission, such as inaccurate volume testing or inaccurate judgment of middle ear function caused by blockage (sound or pressure) of a certain transmission port. This effectively improves the practicality of the acoustic impedance test probe.
[0031] Meanwhile, the tympanogram test unit 102 and the air pressure adapter 105 share the same probe nozzle 2 and the same pipeline, which can effectively reduce the diameter of the probe nozzle 2 and better fit smaller ear tips.
[0032] In a further preferred embodiment of this utility model, such as Figure 2 and Figure 3 As shown, a sealing gasket 8 is provided at the bottom of the probe nozzle 2, and an opening 9 is provided on the sealing gasket 8 to avoid the tympanic cavity diagram test sound generation unit 102, the sound reflection test sound generation unit 103, the receiving sensor 104 and the air pressure adapter pipe 105.
[0033] In this embodiment, since the bottom of the probe nozzle 2 is provided with multiple positioning slots 10, in order to avoid mutual interference between components at the positions of two adjacent positioning slots 10, observation... Figure 2 It can be observed that a sealing gasket 8 is provided at the bottom of the probe nozzle 2. Then, combined with... Figure 3 It can be seen that the sealing gasket 8 has an opening 9 for avoiding the tympanic cavity test sound generation unit 102, the sound reflection test sound generation unit 103, the receiving sensor 104 and the air pressure adapter pipe 105, which facilitates the installation of the sealing gasket 8.
[0034] In a further preferred embodiment of this utility model, such as Figure 2 As shown, the top of the outer shell 101 is threadedly connected to a cap 12, and the cap 12 has a round hole 13 for the probe nozzle 2 to extend out.
[0035] In this embodiment, a cap 12 is threadedly connected to the top of the outer shell 101, and a round hole 13 for protruding the probe nozzle 2 is provided on the top of the cap 12, which makes it easier to press the probe nozzle 2 onto the probe body 1 and improves the connection stability of the probe nozzle 2.
[0036] In a further preferred embodiment of this utility model, such as Figure 1As shown, the top of the probe nozzle 2 is provided with two protrusions forming a limiting part 14 at intervals from top to bottom, and a limiting groove 15 is formed between the two limiting parts 14.
[0037] In this embodiment, by providing two protrusions at intervals from top to bottom on the top of the probe nozzle 2 to form a limiting part 14, and forming a limiting groove 15 between the two limiting parts 14, it is easier to securely connect the earplug to the top of the probe nozzle 2, thereby effectively improving the stability of the acoustic impedance probe.
[0038] In a further preferred embodiment of this utility model, such as Figure 2 As shown, the top edge of the probe tail shell 3 is connected in a ring array with multiple connecting plates 16 for abutting against the inner wall of the outer shell 101, so that the probe tail shell 3 can be inserted into the outer shell 101.
[0039] In this embodiment, by connecting multiple connecting plates 16 in a circular array at the top edge of the probe tail shell 3, and making the maximum distance between two opposing connecting plates 16 equal to the inner diameter of the outer shell 101, the connecting plates 16 can abut against the inner wall of the outer shell 101 when the probe tail shell 3 is inserted into the outer shell 101. This effectively improves the connection stability between the probe tail shell 3 and the outer shell 101 while ensuring the efficiency of replacing the probe body 1 and the probe tail shell 3.
[0040] The implementation principle of the above embodiment is as follows: connect the probe body 1, probe nozzle 2 and probe tail shell 3, and then put an earplug on the top of the probe nozzle 2, so that the user's ear canal can be tested.
[0041] When using the acoustic impedance probe, the tympanogram test sound generation unit 102 and the acoustic reflection test sound generation unit 103 will detect the ear canal. During the tympanogram test process, while the tympanogram test sound generation unit 102 is running, the rear air nozzle 7 will also supply air synchronously, so that the gas enters the transmission pipeline 5 through the air pressure adapter 105. Thus, the tympanogram test sound generation unit 102 and the air pressure adapter 105 share the same pipeline for the probe nozzle 2, which can effectively avoid the inaccuracy of traditional separate transmission due to blockage (sound or pressure) of a certain transmission port, resulting in inaccurate volume test or inaccurate judgment of middle ear tympanic cavity function, thereby effectively improving the practicality of the acoustic impedance test probe.
[0042] Finally, the sound waves reflected from the ear canal are received by the receiving sensor 104, and then the data is transmitted to the device via the probe signal connection line 6 to complete the detection of the ear canal.
[0043] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.
Claims
1. A probe for acoustic impedance testing, characterized in that, The device includes a probe body (1), which is mainly composed of a shell (101), a tympanogram test sound generation unit (102), an acoustic reflection test sound generation unit (103), a receiving sensor (104), and a pneumatic adapter (105). The tympanogram test sound generation unit (102) and the acoustic reflection test sound generation unit (103) are symmetrically arranged inside the shell (101). The receiving sensor (104) and the pneumatic adapter (105) are arranged on both sides of the tympanogram test sound generation unit (102). The tympanogram test sound generation unit (102), the acoustic reflection test sound generation unit (103), the receiving sensor (104), and the pneumatic adapter (105) are all connected to the shell (101) through a bracket (4). The probe nozzle (2) is connected to the top of the probe body (1). The top of the probe nozzle (2) has three transmission channels (5) arranged in a ring array. Two of the transmission channels (5) are connected to the sound reflection test sound generation unit (103) and the receiving sensor (104) respectively. The other transmission channel (5) is connected to the tympanogram test sound generation unit (102) and the air pressure penetration pipe. The probe tail shell (3) is connected to the bottom of the probe body (1). The probe signal connection line (6) is fixedly connected to one side of the bottom of the probe tail shell (3), and the rear air nozzle (7) connected to the air pressure adapter (105) is fixedly connected to the other side.
2. The acoustic impedance testing probe according to claim 1, characterized in that, The bottom of the probe nozzle (2) is provided with a sealing gasket (8), and the sealing gasket (8) has an opening (9) for avoiding the tympanic diagram test sound generation unit (102), the sound reflection test sound generation unit (103), the receiving sensor (104) and the air pressure adapter (105).
3. The acoustic impedance testing probe according to claim 2, characterized in that, The bottom of the probe nozzle (2) is provided with a positioning groove (10) corresponding to the positions of the tympanic diagram test sound generation unit (102), the sound reflection test sound generation unit (103), the receiving sensor (104) and the air pressure adapter pipe (105). The positioning groove (10) is connected to the transmission pipeline (5) through the connecting groove (11).
4. The acoustic impedance testing probe according to claim 3, characterized in that, The top of the outer casing (101) is threaded with a cap (12), and the cap (12) has a round hole (13) for the probe nozzle (2) to extend out.
5. A probe for acoustic impedance testing according to claim 4, characterized in that, The top of the probe nozzle (2) is provided with two protrusions forming a limiting part (14) from top to bottom, and a limiting groove (15) is formed between the two limiting parts (14).
6. A probe for acoustic impedance testing according to claim 5, characterized in that, The top edge of the probe tail shell (3) is connected in a ring array with multiple connecting plates (16) for abutting against the inner wall of the outer shell (101), so that the probe tail shell (3) can be inserted into the outer shell (101).