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S.V. Nigmatullina, +.+. Selyaninov
Perm National Research Polytechnic University, Perm, Russian Federation
THE EIGENFREQUENCIES THE IMPLANT
STAPES PISTON TYPE
Hearing is one of the senses, through which we learn about the world. Hearing impairment due
to injury or disease affects the quality of life. The patient is unable to perform communicative functions.
Otosclerosis – one of the most common diseases. Treatment is surgery to stapedioplasty. Technique of
the operation has been known since 1958. When stapedioplasty one of the most vulnerable sections of
conductive auditory ossicles is the stirrup, which is replaced by the prosthesis piston type rod. This type
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of operation is to microsurgery. To determine the natural frequencies of the method of finite elements.
The differential equation of longitudinal vibrations of the rod. The natural frequencies of the prosthesis is
much higher sound range and fall into the super-high-MHz range. In order to reduce the effect of radiation of
mobile phones and car alarms in the auditory system of the person introduced the criterion of first natural
frequencies of the output of the graft-MHz range, so the material and shape of the prosthesis are determined
by minimizing the first natural frequency. The prosthesis is modeled in engineering software package. Form is
selected, the corresponding longitudinal vibrations that provide conductivity ear from the middle ear to the
inner ear. Considered the natural frequencies of a homogeneous rod of different materials. According to the
results of the best materials are teflon and gold. To determine the natural frequencies of a comparison of analytical and approximate solutions obtained using the finite element method.
Keywords: stapedioplasty, shape of the rod prosthesis, ultra-high eigenfrequencies, teflon.
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1. F"08' A.>., G8#":!& H.I. F+&3"*('+#(. – JA4.: A&!+$"*'+#(,
2000. – 463 ,.
2. F&%&68!+'( @.J., J"!)'+'&- I.I., A&60("2 K.<. B.4&% 5(%(3"$%&- 5%&$"1( ,$%"3"'+ 5%+ ,$(5"6&5!(,$+#" '( &,'&-" ,&4,$-"''.*
7(,$&$ //K&,,+:,#+: ?8%'(! 4+&3"*('+#+. – 2009. – @. 13, L 4 (46). –
J. 42–53
3. F+&/+1+#( / H.I. B!(6+3+%&-, M.>. K&D85#+', I.N. A&$(5"'#&, I.>. M""-. – <.: <"6+2+'(, 1983. – 272 ,.
4. B8!9;$":' O. J!8*&8!87;(CD+" &5"%(2++. – <.: <"6+2+'(,
1972. – 426 ,.
5. K"3+1&- I.E. P%($#+: #8%, 3"6+2+',#&: + 4+&!&0+7",#&: /+1+#+: !"#2++ + ,"3+'(%. / 5&6 %"6. 5%&/. I.E. K"3+1&-(; K&,. 0&,. 3"6.
8'-$. – <., 2001. – 383 ,.
6. K86') A.=. I$!(, &5"%($+-'&: &$&%+'&!(%+'0&!&0++. – <.:
<"6+2+'(, 1983.
145
.!. "#$%&'())#*&, +.+. ,)-*#*./
7. Rosowski J.J. Mechanism of sound conduction in normal and diseased ears // The Function and Mechanics of Normal, Diseased and Reconstructed Middle Ear. – Hague: Kugler Publications, 2000. – P. 137–145.
8. P&!"4('+) !+'":'.* ,+,$"3 / 5&6 %"6. B.B. F&!&$+'(. – @. 1. –
<.: <(;+'&,$%&"'+", 1978. – 352 ,.
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3' +"4#*+5
6&)7+48((&9+ :+9&; +$&7#"9+ (A"%39, K&,,+)) – 3(0+,$%('$
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:.(;9&9#" <(.0/+9$* <9+4#(=."&- (A"%39, K&,,+)) – 6&#$&%
$"*'+7",#+* '(8#, 5%&/",,&% A"%3,#&0& '(2+&'(!9'&0& +,,!"6&-(-
146
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About the authors
Nigmatullina Saniya Vadimovna (Perm, Russian Federation) –
graduate student, department of Theoretical Mechanics Perm National
Research Polytechnic University (29, Komsomolsky av., Perm, 614990,
Russian Federation, e-mail: [email protected]).
Selyaninov Aleksandr Anatolyevich (Perm, Russian Federation) –
Doctor of Technical Sciences, Professor of Perm National Research Polytechnic University (29, Komsomolsky av., Perm, 614990, Russian Federation, e-mail: [email protected]).
A&!87"'& 25.08.2012
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