JP2010068873A5 - - Google Patents

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Publication number
JP2010068873A5
JP2010068873A5 JP2008237143A JP2008237143A JP2010068873A5 JP 2010068873 A5 JP2010068873 A5 JP 2010068873A5 JP 2008237143 A JP2008237143 A JP 2008237143A JP 2008237143 A JP2008237143 A JP 2008237143A JP 2010068873 A5 JP2010068873 A5 JP 2010068873A5
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JP
Japan
Prior art keywords
probe
subject
eye
tonometer
ultrasonic
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JP2008237143A
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Japanese (ja)
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JP2010068873A (en
JP5397669B2 (en
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Priority to JP2008237143A priority Critical patent/JP5397669B2/en
Priority claimed from JP2008237143A external-priority patent/JP5397669B2/en
Publication of JP2010068873A publication Critical patent/JP2010068873A/en
Publication of JP2010068873A5 publication Critical patent/JP2010068873A5/ja
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Publication of JP5397669B2 publication Critical patent/JP5397669B2/en
Expired - Fee Related legal-status Critical Current
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Claims (3)

被検者眼に入射させる超音波を発するとともに被検者眼で反射された超音波を検出する探触子と、
前記探触子から出力された測定信号を処理して眼圧を求める演算部と、
を有し、被検者眼の眼圧を測定する非接触式超音波眼圧計において、
被検者眼と眼圧計との適正作動距離は、少なくとも１０ｍｍより長く設定されており、
前記探触子は、超音波ビームの前記適正作動距離における照射エリアが被検者眼の開瞼エリアに収まるように、出射径もしくは出射面形状が定められている，又は吸音材が設けられていることを特徴とする非接触式超音波眼圧計。 A probe that emits ultrasonic waves incident on the subject's eyes and detects ultrasonic waves reflected by the subject's eyes;
A calculation unit for obtaining intraocular pressure by processing the measurement signal output from the probe;
In a non-contact ultrasonic tonometer that measures the intraocular pressure of the subject's eye,
The appropriate working distance between the subject's eye and the tonometer is set to be longer than at least 10 mm,
The probe has an emission diameter or an emission surface shape, or a sound absorbing material is provided so that an irradiation area of the ultrasonic beam at the appropriate working distance falls within the eye opening area of the subject's eye. A non-contact ultrasonic tonometer characterized by comprising: 請求項１の非接触式超音波眼圧計において、
前記探触子は、前記照射エリアが前記開瞼エリアよりも小さくなるように設定された共振周波数及び出射径を持つ圧電素子を有することを特徴とする非接触式超音波眼圧計。 The non-contact ultrasonic tonometer according to claim 1,
The non-contact ultrasonic tonometer, wherein the probe includes a piezoelectric element having a resonance frequency and an emission diameter set so that the irradiation area is smaller than the opening area. 請求項１の非接触式超音波眼圧計において、
前記探触子は、該探触子と被検者眼との間に配置された，該探触子から出射された超音波ビームを吸収する吸音材を有し、
前記吸音材は、前記探触子から出射された超音波ビームを通過させるための開口であって前記開瞼エリアよりも小さい開口を有すると共に、球面波の照射エリアの大きさと吸音材の開口の大きさとが略同じなる位置より前方に形成された球面波吸収部を有することを特徴とする非接触式超音波眼圧計。 The non-contact ultrasonic tonometer according to claim 1,
The probe has a sound absorbing material that is disposed between the probe and a subject's eye and absorbs an ultrasonic beam emitted from the probe.
The sound absorbing material is an opening for allowing the ultrasonic beam emitted from the probe to pass therethrough, and has an opening smaller than the opening area, and the size of the spherical wave irradiation area and the opening of the sound absorbing material. A non-contact ultrasonic tonometer having a spherical wave absorbing portion formed in front of a position having substantially the same size.
JP2008237143A 2008-09-16 2008-09-16 Non-contact ultrasonic tonometer Expired - Fee Related JP5397669B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2008237143A JP5397669B2 (en) 2008-09-16 2008-09-16 Non-contact ultrasonic tonometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2008237143A JP5397669B2 (en) 2008-09-16 2008-09-16 Non-contact ultrasonic tonometer

Publications (3)

Publication Number Publication Date
JP2010068873A JP2010068873A (en) 2010-04-02
JP2010068873A5 true JP2010068873A5 (en) 2011-11-04
JP5397669B2 JP5397669B2 (en) 2014-01-22

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Family Applications (1)

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JP2008237143A Expired - Fee Related JP5397669B2 (en) 2008-09-16 2008-09-16 Non-contact ultrasonic tonometer

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JP (1) JP5397669B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101646700B1 (en) * 2015-07-23 2016-08-16 알피니언메디칼시스템 주식회사 Ultrasound Transducer having soundproofing member
JP7421069B2 (en) * 2019-12-04 2024-01-24 株式会社ニデック ultrasonic tonometer
WO2022210016A1 (en) * 2021-03-31 2022-10-06 株式会社ニデック Ultrasonic tonometer and ultrasonic tonometer control program

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4928697A (en) * 1988-09-28 1990-05-29 The Ohio State University Non-contact high frequency tonometer
JPH05253190A (en) * 1991-10-10 1993-10-05 Massie Res Lab Inc Non-contact type tonometer
WO2008072527A1 (en) * 2006-12-08 2008-06-19 Nihon University Intraocular pressure measuring device

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