CN112870550B - Failure analysis method of artificial cochlea implant - Google Patents
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- 239000007943 implant Substances 0.000 title claims abstract description 116
- 238000004458 analytical method Methods 0.000 title claims abstract description 95
- 210000003477 cochlea Anatomy 0.000 title claims abstract description 68
- 238000012360 testing method Methods 0.000 claims abstract description 140
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 22
- 239000004065 semiconductor Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 12
- 125000004122 cyclic group Chemical group 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 230000002159 abnormal effect Effects 0.000 claims description 7
- 239000000741 silica gel Substances 0.000 claims description 7
- 229910002027 silica gel Inorganic materials 0.000 claims description 7
- 230000000638 stimulation Effects 0.000 claims description 7
- 239000001307 helium Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 208000037408 Device failure Diseases 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000012797 qualification Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 238000011056 performance test Methods 0.000 description 7
- 238000010998 test method Methods 0.000 description 7
- 238000010606 normalization Methods 0.000 description 6
- 238000011084 recovery Methods 0.000 description 6
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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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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- Health & Medical Sciences (AREA)
- Otolaryngology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Prostheses (AREA)
Abstract
The invention provides a failure analysis method of an artificial cochlea implant. The artificial cochlea implant failure analysis method comprises the following steps: ID telemetry, impedance telemetry, compliance testing, and testing of stimulus output. The invention provides a failure analysis method of an artificial cochlear implant, which aims to solve the problems of difficult positioning and inaccurate positioning of failure reasons of the existing failure analysis method of the artificial cochlear implant and effectively improves the qualification rate of the mass production of the artificial cochlear implant.
Description
Technical Field
The invention relates to the technical field of cochlear implants, in particular to a failure analysis method of a cochlear implant.
Background
At present, the artificial cochlea implant body has failure in the use or production process, and the failure reason needs to be positioned. Because the artificial cochlea implant has a plurality of constituent components, the failure of different components needs different analysis techniques, thereby the problems of difficult positioning and inaccurate positioning of the artificial cochlea failure analysis cause are faced.
Disclosure of Invention
In view of the above, the invention provides a method for analyzing the failure of an artificial cochlear implant, which aims to solve the problems of difficult positioning and inaccurate positioning of failure reasons in the failure analysis of the existing artificial cochlear implant.
The invention provides a failure analysis method of an artificial cochlea implant, which comprises the following steps: the electrical performance of the cochlear implant is analyzed, and the analysis process of the electrical performance comprises the testing processes of ID telemetry, impedance telemetry, compliance testing and stimulation output.
Further, the testing process of the ID telemetry, the impedance telemetry, the compliance test and the stimulus output test comprises the following steps:
executing ID telemetry, if the test result is normal, ending, and if the test result is abnormal, continuing the following test;
performing impedance telemetry, placing the artificial cochlea implant electrode in normal saline, judging that the implant electrode is open circuit if the impedance telemetry result is more than or equal to 20000 omega, or placing the implant electrode in air, and judging that the implant electrode has a short circuit condition if the impedance telemetry result is less than or equal to 20000 omega;
performing compliance test, setting the test amplitude to 255cl, placing the artificial cochlea implant electrode in normal saline, if the test current is 0 or less than 1500 mu A, indicating that the implant compliance test is abnormal, judging that the chip or the electrode has an open circuit or semi-open circuit state, or placing the implant electrode in the air, and if the test current is more than 50 mu A, judging that the chip or the electrode has a short circuit condition;
and executing a stimulus output test, measuring the signal amplitude output by the electrode, and judging whether a forward decoding circuit of the artificial cochlea implant has faults or not through the signal amplitude.
Further, the failure analysis method further comprises the step of carrying out sweep frequency analysis on the artificial cochlea implant so as to judge whether the implant resonant circuit has faults or not.
Further, the failure analysis method further includes locating whether a short circuit exists in the cochlear implant electrode through leakage current analysis, and the leakage current analysis method includes the following steps:
the electrode of the artificial cochlea implant is placed in the air, other parts are immersed in normal saline, a compliance test is carried out, whether the short circuit condition exists in the artificial cochlea implant is analyzed according to the compliance test result, if so, leakage current analysis is ended, and otherwise, the following test is continued;
all electrodes of the artificial cochlea implant are placed in normal saline, compliance test is executed in debugging software, and the compliance output current of the artificial cochlea implant is judged and analyzed according to the compliance test result, if normal, leakage current analysis is finished, otherwise, the following test is continued;
electrodes with the electrode numbers from the initial value to the specific value of the artificial cochlea implant are placed in air, the specific value is larger than the initial value and smaller than the total number of the electrodes, a compliance test is executed, whether the electrodes with the electrode numbers from the initial value to the specific value of the implant have short circuit conditions with other electrodes or not is analyzed according to a compliance test result, if yes, leakage current analysis is ended, and otherwise, the following test is continued;
placing the electrodes with the electrode numbers from the initial value to the specific value plus the increment value in air, performing a compliance test, analyzing whether the electrodes with the electrode numbers from the initial value to the specific value plus the increment value have short circuit conditions with other electrodes according to the compliance test result, ending leakage current analysis, otherwise, continuing to increase the electrodes according to the increment value on the basis, and performing the compliance test on the electrodes with the electrode numbers from the initial value to the increment value plus the integer multiple of the specific value until the number of the rest electrodes is not enough to increment the value, and performing the following test;
and the electrodes from the initial electrode number to the total electrode number of the artificial cochlea implant are placed in the air, a compliance test is carried out, and whether short circuit conditions exist at other parts of the artificial cochlea implant except the electrodes is analyzed according to the compliance test result.
Further, the failure analysis method further includes a step of cyclic testing, and the cyclic testing method includes:
and (3) sequentially placing the artificial cochlea implant in a water bath at 90-100 ℃ and an oven at 80-90 ℃ for 40-50 hours for storage test each time, performing electrical property test and data comparison after each time, judging whether the implant is affected by moisture or not according to the data, and repeating the steps for 2-3 times.
Further, the failure analysis method further includes an anatomic analysis, and the step of anatomic analysis includes a first step of: peeling off the silica gel of the artificial cochlea implant, opening the titanium shell and checking the welding condition of the receiving coil.
Further, the step of analyzing the anatomy above further includes a second step of: stripping the electrode, cleaning the silica gel of the stimulator, and drying the electrode and the silica gel.
Further, the failure analysis method further includes an air tightness analysis, and the step of the air tightness analysis includes: firstly, the artificial cochlea implant is stored for 2-3 hours in an environment filled with helium for 3-4 atmospheres, and then whether the artificial cochlea implant leaks air is detected by a helium mass spectrometer leak detector.
Further, the failure analysis method further comprises semiconductor characteristic analysis, wherein after the semiconductor analyzer is connected with the IO of the cochlear implant and the ground, the ground semiconductor characteristic analysis is sequentially carried out on all input and output ends, and whether the IO has diode characteristics is detected.
Compared with the prior art, the method for analyzing the failure of the cochlear implant has the beneficial effects that the failure cause of the cochlear implant is rapidly and effectively positioned through multi-azimuth different combinations of electrical performance test analysis, scanning analysis, leakage current analysis, cyclic test, anatomic analysis, air tightness analysis and semiconductor characteristic analysis.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic overall flow chart of an artificial cochlea implant failure analysis method provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating electrical performance analysis according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating leakage current analysis according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a cyclic test provided by an embodiment of the present invention;
fig. 5 is a schematic diagram illustrating semiconductor characteristic analysis according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
Referring to fig. 1, an overall flow chart of an artificial cochlea implant failure analysis method according to an embodiment of the present invention is shown, which includes: electrical performance analysis, sweep frequency analysis, leakage current analysis, cyclic testing, anatomic analysis, gas tightness analysis, and semiconductor characteristic analysis.
Electrical performance analysis refers to testing analysis of basic functions and performance, including cochlear implant ID telemetry analysis, stimulation output testing analysis, impedance telemetry analysis, and implant compliance testing analysis. The failure mechanism of the implant is located through electrical performance analysis.
And carrying out sweep frequency analysis, namely carrying out sweep frequency test on the artificial cochlea implant by using a signal analyzer, and testing whether the natural frequency of the artificial cochlea implant has deviation or not so as to judge the integrity of an implant receiving circuit.
And analyzing leakage current, namely placing all electrodes of the cochlear implant in an open circuit state, namely in air, performing implant compliance current test by using cochlear debugging software, and checking a current value fed back by the cochlear implant, wherein the current value is the leakage current. And if the leakage current is 0 or less than 20 mu A, performing leakage current test on the electrode section of the artificial cochlea implant body, and analyzing whether a short circuit exists in a certain section.
And (3) carrying out a cycle test, namely sequentially placing the artificial cochlea implant body in a 95 ℃ water bath and a 85 ℃ oven for 48 hours for storage test, carrying out an electrical property test after each time, and comparing the data of the cycle test after the cycle test is completed twice.
And (3) anatomical analysis, namely dissecting the sealing silica gel and the titanium shell of the artificial cochlea implant, and further testing and analyzing the internal circuit.
And (3) performing air tightness analysis, namely performing air tightness test on the implant stimulator by using a helium mass spectrometer leak detector, and verifying the air tightness index condition of the stimulator.
And (3) analyzing the semiconductor characteristics, namely, using a semiconductor analyzer to perform semiconductor characteristic test on the internal circuit of the stimulator, and analyzing whether a semiconductor device in the circuit has breakdown condition or not.
Referring to fig. 2, a schematic diagram of connection of an analysis system according to an embodiment of the present invention is shown. The implant is a measured sample, the voice processor is connected with a computer provided with artificial cochlea debugging software through an adapter, the transmitting coil of the voice processor is connected with the receiving coil of the implant through a wireless coupling mode, the electrode channel of the implant is provided with a resistor of 1k omega, and the oscilloscope probe can be connected with any electrode channel. And a receiving coil of the artificial cochlea implant in the analysis and test system is coupled with a transmitting coil of the test sound processor, and a standard load is arranged at the electrode end of the artificial cochlea implant. The specific analysis steps of the electrical property analysis are as follows:
ID telemetry is executed in debugging software, and an ID telemetry circuit of the cochlear implant is judged and analyzed according to ID telemetry results, wherein the analysis is as follows: if the result is a character of a combination of numerical values and letters, which indicates that the ID telemetry circuit is normal, if the result is FFFFF, which indicates that the ID telemetry circuit is abnormal, the telemetry circuit can be preliminarily judged at the moment, and the following steps are executed.
Performing impedance telemetry in debugging software, and judging and analyzing an impedance telemetry circuit of the cochlear implant according to impedance telemetry results: placing the artificial cochlea implant electrode in normal saline, and judging that the implant electrode is open circuit if the impedance telemetry result is more than or equal to 20000 omega; and placing the artificial cochlea implant electrode in air, wherein if the impedance telemetry result is less than or equal to 20000 omega, the artificial cochlea implant electrode has a short circuit condition. The following steps are performed.
Executing compliance test in debugging software, and judging and analyzing a current source circuit of the cochlear implant according to implant compliance test results: placing the artificial cochlea implant electrode in normal saline, executing compliance test, wherein the test amplitude is set to 255CL, and if the test current is 0 or less than 1500 mu A, the abnormal compliance test of the artificial cochlea implant is represented, so that the chip or the electrode is judged to have an open circuit or semi-open circuit state; and placing the artificial cochlea implant electrode in air, executing compliance test, wherein the test amplitude is set to 255CL, and if the test current is more than 50 mu A, judging that the chip or the electrode has short circuit condition. The following steps are performed.
The stimulus output test was performed in the debugging software and the signal amplitude output by the electrodes was measured using an oscilloscope. And if the amplitude or the width of the output waveform is abnormal, the fault of a forward decoding circuit of the implant is indicated.
Referring to fig. 3, a flow chart of leakage current analysis provided by the present invention is shown. The analysis steps are as follows:
the artificial cochlea implant electrode is placed in the air, other parts are immersed in normal saline, compliance test is executed in debugging software, whether short circuit condition exists in the implant is analyzed according to the result of the compliance test, if yes, leakage current analysis is finished, and otherwise, the following steps are executed.
All electrodes of the artificial cochlea implant are placed in normal saline, compliance test is executed in debugging software, compliance output current of the implant is judged and analyzed according to a compliance test result, if normal, leakage current analysis is finished, and otherwise, the following steps are executed.
And placing the electrode 1-5 of the artificial cochlea implant in air, executing a compliance test in debugging software, analyzing whether the electrode 1-5 of the artificial cochlea implant has a short circuit condition with other electrodes according to a compliance test result, if so, ending leakage current analysis, otherwise, executing the following steps.
And placing the electrode 1-15 of the artificial cochlea implant in air, executing a compliance test in debugging software, analyzing whether the electrode 1-15 of the artificial cochlea implant has a short circuit condition with other electrodes according to a compliance test result, if so, ending leakage current analysis, otherwise, executing the following steps.
Electrodes 1-22 of the cochlear implant are placed in air, compliance test is executed in debugging software, and whether short circuit conditions exist at other parts of the cochlear implant except the electrodes is analyzed according to the compliance test result.
Referring to fig. 4, a schematic diagram of a cyclic test according to the present invention is shown. The test procedure was as follows: placing the failure implant in a water bath at 95 ℃ for 48 hours, taking out, performing an electrical performance test according to an electrical performance test method, and recording test data; and (3) placing the artificial cochlea implant in an oven at 85 ℃ for baking for 48 hours, taking out, performing an electrical property test according to an electrical property test method, and recording test data. And (3) circulating the first two steps twice, comparing the data of four tests, and observing whether the data are affected by water vapor. Data comparison, if the conditions in the following table are satisfied, indicates that the sample is affected by water vapor, and thus the sample is judged to have poor air tightness. Otherwise, the instruction is not affected by water vapor.
| Test procedure | Test results |
| Testing after 48 hours of the first 95℃water bath | Data anomalies |
| Test after 48 hours in the first 85 ℃ oven | Data recovery or normalization |
| Testing after 48 hours of the second 95 ℃ water bath | Data anomalies |
| Testing after 48 hours in a second 85 ℃ oven | Data recovery or normalization |
The water bath temperature, the oven temperature and the standing time are changed, and the test is continued, and the process is as follows: placing the failure implant in a water bath at 90 ℃ for 40 hours, taking out, performing an electrical performance test according to an electrical performance test method, and recording test data; and (3) placing the artificial cochlea implant in an oven at 80 ℃ for baking for 40 hours, taking out, performing an electrical property test according to an electrical property test method, and recording test data. And (3) circulating the first two steps twice, comparing the data of four tests, and observing whether the data are affected by water vapor. Data comparison, if the conditions in the following table are satisfied, indicates that the sample is affected by water vapor, and thus the sample is judged to have poor air tightness. Otherwise, the instruction is not affected by water vapor.
| Test procedure | Test results |
| Testing after 40 hours of the first 90 ℃ water bath | Data anomalies |
| Test after 40 hours in the first 80 ℃ oven | Data recovery or normalization |
| Testing after 40 hours in a second 90 ℃ water bath | Data anomalies |
| Testing after 40 hours in a second 80 ℃ oven | Data recovery or normalization |
The water bath temperature, the oven temperature and the standing time are changed, and the test is continued, and the process is as follows: placing the failure implant in a water bath at 100 ℃ for 50 hours, taking out, performing an electrical performance test according to an electrical performance test method, and recording test data; and (3) placing the artificial cochlea implant in a baking oven at 90 ℃ for baking for 50 hours, taking out, performing an electrical property test according to an electrical property test method, and recording test data. And (3) circulating the first two steps twice, comparing the data of four tests, and observing whether the data are affected by water vapor. Data comparison, if the conditions in the following table are satisfied, indicates that the sample is affected by water vapor, and thus the sample is judged to have poor air tightness. Otherwise, the instruction is not affected by water vapor.
| Test procedure | Test results |
| Testing after 50 hours of the first 100 ℃ water bath | Data anomalies |
| Test after 50 hours in the first 90 ℃ oven | Data recovery or normalization |
| Testing after 50 hours of the second 100 ℃ water bath | Data anomalies |
| Testing after 50 hours in a second 90 ℃ oven | Data recovery or normalization |
Referring to fig. 5, a schematic diagram of semiconductor characteristic analysis is provided in the present invention. And the Force1 and the sequence 2 on the semiconductor analyzer are in short circuit and then connected with one I/O port of the artificial cochlea implant stimulation circuit, the Force3 and the sequence 4 are in short circuit and then connected with the ground of the artificial cochlea implant stimulation circuit, and all input and output ends of the stimulation chip are subjected to semiconductor characteristic analysis and test on the ground in sequence. If the test result has no diode characteristic, the protection failure of the I/O port diode is indicated.
Thus far, the technical solution of the present invention has been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of protection of the present invention is not limited to these specific embodiments. Equivalent modifications and substitutions for related technical features may be made by those skilled in the art without departing from the principles of the present invention, and such modifications and substitutions will be within the scope of the present invention.
The foregoing description is only of the preferred embodiments of the invention and is not intended to limit the invention; various modifications and variations of the present invention will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The failure analysis method of the artificial cochlea implant is characterized by comprising the following steps of: analyzing the electrical performance of the artificial cochlea implant, wherein the analysis process of the electrical performance comprises the testing processes of ID telemetry, impedance telemetry, compliance testing and stimulation output;
the testing process of the ID telemetry, the impedance telemetry, the compliance test and the stimulation output test comprises the following steps:
executing ID telemetry, if the test result is normal, ending, and if the test result is abnormal, continuing the following test;
performing impedance telemetry, placing the artificial cochlea implant electrode in normal saline, judging that the implant electrode is open circuit if the impedance telemetry result is more than or equal to 20000 omega, or placing the implant electrode in air, and judging that the implant electrode has a short circuit condition if the impedance telemetry result is less than or equal to 20000 omega;
performing compliance test, setting the test amplitude to 255CL, placing the artificial cochlea implant electrode in normal saline, if the test current is 0 or less than 1500 mu A, indicating that the implant compliance test is abnormal, judging that the chip or the electrode has an open circuit or semi-open circuit state, or placing the implant electrode in the air, and if the test current is more than 50 mu A, judging that the chip or the electrode has a short circuit condition;
executing a stimulus output test, measuring the signal amplitude output by the electrode, and judging whether a positive decoding circuit of the artificial cochlea implant has faults or not through the signal amplitude;
the failure analysis method further comprises the step of carrying out sweep frequency analysis on the artificial cochlea implant to judge whether a resonance circuit of the implant has faults or not;
the failure analysis method further comprises the step of positioning whether the artificial cochlea implant electrode has a short circuit or not through leakage current analysis, and the leakage current analysis method comprises the following steps:
the electrode of the artificial cochlea implant is placed in the air, other parts are immersed in normal saline, a compliance test is carried out, whether the short circuit condition exists in the artificial cochlea implant is analyzed according to the compliance test result, if so, leakage current analysis is ended, and otherwise, the following test is continued;
all electrodes of the artificial cochlea implant are placed in normal saline, compliance test is executed in debugging software, and the compliance output current of the artificial cochlea implant is judged and analyzed according to the compliance test result, if normal, leakage current analysis is finished, otherwise, the following test is continued;
electrodes with the serial numbers from the initial value to the specific value of the artificial cochlea implant are placed in air, the specific value is larger than the initial value and smaller than the total number of the electrodes, a compliance test is executed, whether the electrodes with the serial numbers from the initial value to the specific value of the implant have short circuit conditions with other electrodes or not is analyzed according to a compliance test result, if yes, leakage current analysis is ended, and otherwise, the following test is continued;
placing the electrodes with the electrode numbers from the initial value to the specific value plus the increment value in air, performing a compliance test, analyzing whether the electrodes with the electrode numbers from the initial value to the specific value plus the increment value have short circuit conditions with other electrodes according to the compliance test result, ending leakage current analysis, otherwise, continuing to increase the electrodes according to the increment value on the basis, and performing the compliance test on the electrodes with the electrode numbers from the initial value to the increment value plus the integer multiple of the specific value until the number of the rest electrodes is not enough to increment the value, and performing the following test;
the electrode number of the artificial cochlea implant is from an initial value to the total number of the electrodes, the electrodes are placed in air, a compliance test is executed, and whether short circuit conditions exist at other parts of the artificial cochlea implant except the electrodes is analyzed according to a compliance test result;
the failure analysis method further comprises semiconductor characteristic analysis, wherein after the semiconductor analyzer is connected with the IO of the cochlear implant and the ground, the ground semiconductor characteristic analysis is sequentially carried out on all input and output ends, and whether the IO has diode characteristics is detected.
2. The failure analysis method according to claim 1, further comprising a step of a cyclic test, the method of cyclic test comprising: and (3) sequentially placing the artificial cochlea implant in a water bath at 90-100 ℃ and an oven at 80-90 ℃ for 40-50 hours for storage test each time, performing electrical property test and data comparison after each time, judging whether the implant is affected by moisture or not according to the data, and repeating the steps for 2-3 times.
3. The failure analysis method according to claim 2, wherein the failure analysis method further includes an anatomical analysis, the step of anatomical analysis including a first step of: peeling off the silica gel of the artificial cochlea implant, opening the titanium shell and checking the welding condition of the receiving coil.
4. A failure analysis method according to claim 3, wherein the step of anatomic analysis further comprises a second step of: stripping the electrode, cleaning the silica gel of the stimulator, and drying the electrode and the silica gel.
5. The failure analysis method according to claim 4, further comprising an air tightness analysis, the step of air tightness analysis comprising: firstly, the artificial cochlea implant is stored for 2-3 hours in an environment filled with helium for 3-4 atmospheres, and then whether the artificial cochlea implant leaks air is detected by a helium mass spectrometer leak detector.
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| US8265766B1 (en) * | 2008-12-23 | 2012-09-11 | Advanced Bionics, Llc | Methods and systems of automatically detecting an impedance of one or more electrodes in a cochlear implant system |
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| WO2019162837A1 (en) * | 2018-02-20 | 2019-08-29 | Cochlear Limited | Advanced electrode data analysis |
| CN209133683U (en) * | 2018-12-26 | 2019-07-19 | 吉林医药学院 | Wireless broadband circle polarized implanted antenna of the biologic medical equipment based on graphene |
| CN111228647A (en) * | 2020-02-25 | 2020-06-05 | 浙江诺尔康神经电子科技股份有限公司 | General communication method for cochlear implant system |
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