CN111603681A - Artificial cochlea current detection device - Google Patents
Artificial cochlea current detection device Download PDFInfo
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- CN111603681A CN111603681A CN202010586649.1A CN202010586649A CN111603681A CN 111603681 A CN111603681 A CN 111603681A CN 202010586649 A CN202010586649 A CN 202010586649A CN 111603681 A CN111603681 A CN 111603681A
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- cochlear implant
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36036—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of the outer, middle or inner ear
- A61N1/36038—Cochlear stimulation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36036—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of the outer, middle or inner ear
- A61N1/36038—Cochlear stimulation
- A61N1/36039—Cochlear stimulation fitting procedures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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Abstract
The invention discloses a cochlear implant current detection device, wherein two binding posts are arranged on one side of a shell; the shell is in a uncovered rectangular box shape, the bottom surface of the shell is bent, the bending angle is 160-170 degrees, and the partition plate is arranged in the shell and divides the space in the shell into an upper part and a lower part; two grooves are arranged on the side close to the binding post, the two grooves are respectively positioned on the upper part and the lower part separated by the partition plate, platinum gold wires are arranged in the grooves, and the platinum gold wires are electrically connected with the binding post; two ends of the reference resistor are respectively connected with the binding posts; the first positioning block is arranged in the shell, and the upper part of the partition board is separated from the shell and is positioned on the horizontal plane of the bottom surface of the bent shell; the pressure bar is arranged in the shell, and the lower part of the pressure bar is separated by the partition plate; the second positioning block is arranged below the shell and on the surface of the bent bottom surface of the shell, which forms an angle of 160-170 degrees with the horizontal plane. The invention can detect the stimulation current output of the artificial cochlea, which is extremely close to the practical use.
Description
Technical Field
The invention relates to the field of electrical detection, in particular to a cochlear implant current detection device.
Background
The mechanism by which a person hears sound is that a sound signal is transmitted from the outer ear to the middle ear, which converts the sound signal into a mechanical vibration signal, then transmitted to the cochlea in the inner ear, and then the mechanical vibration signal is converted into an electrical signal by the cochlea, and then transmitted to the brain through a neural pathway. Research shows that a complete electric signal voltage transmitted by the cochlea of the human body has the characteristics of negative front and positive back. The positive potential signal is the main body of the transmission signal, which carries information components, while the negative potential is used for neutralizing the positive charge and ensuring the potential balance in the brain.
The artificial cochlea is a neural prosthesis which converts sound signals into electric signals and is implanted into the brain of a deaf patient to replace the function of the cochlea of the human body. Based on the characteristics of the human cochlea generating electric signals, researchers try to adopt various signals with characteristics similar to human body signals, such as sine waves, positive and negative triangular waves, positive and negative pulses and the like, as signal sources of the artificial cochlea since the invention of the artificial cochlea, and most products on the market at present adopt first negative pulse signals and then positive pulse signals as signal outputs of the artificial cochlea.
The cochlear implant is essentially an acousto-electric conversion device, and discharges to the brain of a human body directly after being implanted into the brain, so the discharge time, the current and the charge of the cochlear implant to the brain must be strictly controlled within the safety range of the human body. The pulse width, the pulse amplitude, the pulse gap and the precision of the pulse stimulation rate all affect the safety of human bodies, and the parameters directly reflect the stability and the reliability of a current source, an electronic switch and a crystal oscillator of the cochlear implant. In the process of contact between a writer and some domestic cochlear implant manufacturers, all the manufacturers adopt a manual means of observing the waveform of the stimulation pulse by an oscilloscope to inspect the products in product quality management before the products leave a factory.
With the development of scientific technology, the new generation of cochlear implants mostly adopts a multi-channel approach to stimulate nerves, that is, one cochlear implant has a plurality of electrodes, and at most, 24 electrodes. When testing such medical products, it is theoretically necessary to test all electrode signals. The auditory nerve fibers generate nerve impulses after being stimulated by current, and the nerve impulses are transmitted to the brain to form auditory sense in the brain; since the position of the auditory nerve fiber stimulated by the current is frequency-dependent, the resulting auditory sensation has good frequency characteristics and a large relationship with the current output.
At present, no good testing device is used for accurately measuring current in the manual worm testing process, and the design and the actual using state of the testing device cannot be well restored, so that the testing error is larger.
Disclosure of Invention
In view of the above, the present invention provides a cochlear implant current detection apparatus for automatically, rapidly and accurately detecting the current output condition of a cochlear implant.
In order to achieve the above object, the present invention provides a cochlear implant current detection device, comprising a binding post, a reference resistor, a platinum gold wire, a shell, a wire pressing rod, a first positioning block, a bottom plate, a second positioning block, a support column and a partition plate, wherein,
the two binding posts are arranged on one side of the shell; the shell is in a uncovered rectangular box shape, the bottom surface of the shell is bent, the bending angle is 160-170 degrees, the partition plate is arranged in the shell, and the space in the shell is divided into an upper part and a lower part; two grooves are arranged on the side close to the binding post, the two grooves are respectively positioned on the upper part and the lower part separated by the partition plate, platinum gold wires are arranged in the grooves, and the platinum gold wires are electrically connected with the binding post; two ends of the reference resistor are respectively connected with the binding posts; the first positioning block is arranged in the shell, and the upper part of the partition board is separated from the shell and is positioned on the horizontal plane of the bottom surface of the bent shell; the pressure bar is arranged in the shell, and the lower part of the pressure bar is separated by the partition plate; the second positioning block is arranged below the shell and on the surface of the bent bottom surface of the shell, which forms an angle of 160-170 degrees with the horizontal plane; the support column is connected with the shell and the bottom plate, and the bottom plate is in a plane rectangle shape.
Preferably, the device also comprises an oscilloscope, a connecting wire, an adapter, a USB line and a PC terminal, wherein the oscilloscope is connected with the wiring terminal and is used for detecting the current output by the wiring terminal; the PC end, the USB line, adapter and connecting wire connect gradually, connecting wire is connected with artifical cochlea speech treater, the PC end sends the simulation sound signal of telecommunication and reachs artifical cochlea speech treater, be connected with artifical cochlea transmission coil through the transmission wire, artifical cochlea transmission coil is placed in the second locating piece, the stimulator of artifical cochlea implant is placed in first locating piece, artifical cochlea transmission coil is relative with the centre of a circle of the receiving coil of artifical cochlea implant, respectively in the outside and the inside of casing, magnetism inhales mutually, the stimulation electrode of artifical cochlea implant is in the casing, the lower part that the division board separates, the line ball stick is pressed on it.
Preferably, the platinum gold wire is helical.
Preferably, the reference resistance is 1k Ω.
Preferably, the reference resistance is 2k Ω.
Preferably, the shell, the pressure bar, the first positioning block, the bottom plate, the second positioning block, the supporting column and the partition plate are all made of transparent acrylic materials.
Preferably, the first positioning block is bonded to the housing.
Preferably, the second positioning block is adhesively connected with the housing.
Preferably, the support column is adhesively connected to the housing.
Preferably, the supporting column is connected with the bottom plate through screws.
The invention has the beneficial effects that: the cochlear implant current testing device accurately positions and completely simulates each part of the cochlear implant to use angles, and the set partition plate separates the cochlear implant loop electrode from the stimulating electrode, so that the practical use condition is restored to the maximum extent, reliable connection can be realized, the test is scientific, the operation is convenient, and the current output of the cochlear implant stimulating electrode can be accurately detected.
Drawings
In order to make the object, technical scheme and beneficial effect of the invention more clear, the invention provides the following drawings for explanation:
fig. 1 is a schematic overall structure diagram of a cochlear implant current detection apparatus according to an embodiment of the present invention;
fig. 2 is an enlarged schematic structural view of a cochlear implant current detection apparatus according to an embodiment of the present invention;
fig. 3 is a schematic back structure view of a cochlear implant current detection apparatus according to an embodiment of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
Referring to fig. 1, there is shown a schematic structural diagram of a cochlear implant current detection device according to an embodiment of the present invention, including a terminal 1, a reference resistor 2, a platinum wire 3, a housing 4, a pressure bar 5, a first positioning block 6, a bottom plate 8, a second positioning block 9, a support column 11, and a partition plate 51, wherein,
two binding posts 1 are arranged on one side of the shell 4; the shell 4 is in a rectangular box shape without a cover, the bottom surface of the shell 4 is bent, the bending angle is 160-170 degrees, and the partition plate 51 is arranged in the shell 4 and divides the space inside the shell 4 into an upper part and a lower part; two grooves are arranged on the side close to the binding post 1, the two grooves are respectively positioned at the upper part and the lower part separated by the partition plate 51, platinum gold wires 3 are arranged in the grooves, and the platinum gold wires 3 are electrically connected with the binding post 1; two ends of the reference resistor 2 are respectively connected with the binding posts 1; the first locating block 6 is arranged in the shell 4, and the upper part of the partition board 51 is separated from the upper part and is positioned on the horizontal plane of the bottom surface of the bent shell 4; the pressure bar 5 is arranged in the shell 4 and is divided into lower parts by a partition plate 51; the second positioning block 9 is arranged below the shell 4 and on the surface of the bottom surface of the bent shell 4, which forms an angle of 160-170 degrees with the horizontal plane; the support posts 11 connect the housing 4 and the base plate 8, the base plate 8 being a planar rectangle.
The device also comprises an oscilloscope 12, a connecting wire 15, an adapter 16, a USB (universal serial bus) line 17 and a PC (personal computer) terminal 18, wherein the oscilloscope 12 is connected with the wiring terminal 1 and is used for detecting the current output by the wiring terminal 1; the PC end 18, the USB line 17, the adapter 16 and the connecting wire 15 are sequentially connected, the connecting wire 15 is connected with the cochlear prosthesis speech processor 14, the PC end 18 sends out an analog sound electric signal to reach the cochlear prosthesis speech processor 14, the cochlear prosthesis transmission coil 10 is connected with the cochlear prosthesis transmission coil 10 through the transmission wire 13, the cochlear prosthesis transmission coil 10 is placed in the second positioning block 9, the stimulator 72 of the cochlear prosthesis implant is placed in the first positioning block 6, the cochlear prosthesis transmission coil 10 is opposite to the circle center of the receiving coil 7 of the cochlear implant and is respectively arranged outside and inside the shell 4, magnetism is attracted, the stimulation electrode 71 of the cochlear prosthesis implant is arranged in the shell 4, the lower part separated by the partition plate 51, and the wire pressing rod 5 is pressed on the cochlear implant. The circuit electrode of the artificial cochlea is a sheet electrode arranged on the stimulator 72 and an annular electrode close to the stimulator 72, the division plate 51 is arranged to separate the circuit electrode from the stimulation electrode 71, physiological saline is respectively added into the upper part and the lower part which are divided by the division plate 51 in the detection process to simulate the human body environment, but the physiological saline of the upper part and the lower part is not communicated, namely the physiological saline does not pass through the division plate 51, which is the significance of arranging the division plate 51 and is also the key of the invention; the stimulating electrode 71 is pressed downwards through the pressure wire rod 5, and the loop electrode and the platinum wire 3 in the groove of the upper part separated by the partition plate 51 form an electrical connection relationship; the stimulating electrode 71 is electrically connected to the platinum wire 3 in the groove of the lower portion partitioned by the partition plate 51. When current detection is carried out, the reference resistor 2 is equivalent to human tissues, the stimulation electrode 71 outputs current stimulation, a complete electrical stimulation loop is formed by the platinum wire 3 at the lower part of the partition plate 51, the binding post 1, the reference resistor 2, the other binding post 1, the platinum wire 3 at the upper part of the partition plate 51 and the loop electrode, the bottom surface of the shell 4 is set to be in a bending shape of 160-170 degrees, namely, the angle of the artificial cochlea implant in use is simulated to the maximum extent, and current detection errors caused by deviation of the angle of the receiving coil 7 and the stimulator 72 from actual use during current detection are prevented.
Detailed description of the preferred embodiments
The platinum gold wire 3 is spiral, and increases the surface area in contact with the physiological saline, reduces the impedance, and minimizes the influence.
The reference resistance 2 is 1k omega or 2k omega to simulate human tissue.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (10)
1. A cochlear implant current detection device is characterized by comprising a binding post, a reference resistor, a platinum gold wire, a shell, a pressure bar, a first positioning block, a bottom plate, a second positioning block, a support column and a partition plate, wherein,
the two binding posts are arranged on one side of the shell; the shell is in a uncovered rectangular box shape, the bottom surface of the shell is bent, the bending angle is 160-170 degrees, the partition plate is arranged in the shell, and the space in the shell is divided into an upper part and a lower part; two grooves are arranged on the side close to the binding post, the two grooves are respectively positioned on the upper part and the lower part separated by the partition plate, platinum gold wires are arranged in the grooves, and the platinum gold wires are electrically connected with the binding post; two ends of the reference resistor are respectively connected with the binding posts; the first positioning block is arranged in the shell, and the upper part of the partition board is separated from the shell and is positioned on the horizontal plane of the bottom surface of the bent shell; the pressure bar is arranged in the shell, and the lower part of the pressure bar is separated by the partition plate; the second positioning block is arranged below the shell and on the surface of the bent bottom surface of the shell, which forms an angle of 160-170 degrees with the horizontal plane; the support column is connected with the shell and the bottom plate, and the bottom plate is in a plane rectangle shape.
2. The cochlear implant current detection device according to claim 1, further comprising an oscilloscope, a connecting wire, an adapter, a USB cable and a PC terminal, wherein the oscilloscope is connected to the terminal for detecting the current output from the terminal; the PC end, the USB line, adapter and connecting wire connect gradually, connecting wire is connected with artifical cochlea speech treater, the PC end sends the simulation sound signal of telecommunication and reachs artifical cochlea speech treater, be connected with artifical cochlea transmission coil through the transmission wire, artifical cochlea transmission coil is placed in the second locating piece, the stimulator of artifical cochlea implant is placed in first locating piece, artifical cochlea transmission coil is relative with the centre of a circle of the receiving coil of artifical cochlea implant, respectively in the outside and the inside of casing, magnetism inhales mutually, the stimulation electrode of artifical cochlea implant is in the casing, the lower part that the division board separates, the line ball stick is pressed on it.
3. The cochlear implant current detection device according to claim 1, wherein the platinum gold wire is helical.
4. The cochlear implant current detection device of claim 1, wherein the reference resistance is 1k Ω.
5. The cochlear implant current detection device of claim 1, wherein the reference resistance is 2k Ω.
6. The cochlear implant current detection device according to claim 1, wherein the housing, the wire pressing bar, the first positioning block, the bottom plate, the second positioning block, the support column and the partition plate are all made of transparent acrylic material.
7. The cochlear implant current detection device of claim 6, wherein the first spacer block is adhesively connected to the housing.
8. The cochlear implant current detection device of claim 6, wherein the second positioning block is adhesively attached to the housing.
9. The cochlear implant current detection device of claim 6, wherein the support posts are adhesively connected with the housing.
10. The cochlear implant current detection device of claim 6, wherein the support posts are connected with the base plate by screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010586649.1A CN111603681A (en) | 2020-06-24 | 2020-06-24 | Artificial cochlea current detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010586649.1A CN111603681A (en) | 2020-06-24 | 2020-06-24 | Artificial cochlea current detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115101276A (en) * | 2022-07-25 | 2022-09-23 | 四川绵润科技有限公司 | High-safety detection resistor used based on current detection and use method thereof |
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2020
- 2020-06-24 CN CN202010586649.1A patent/CN111603681A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115101276A (en) * | 2022-07-25 | 2022-09-23 | 四川绵润科技有限公司 | High-safety detection resistor used based on current detection and use method thereof |
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