JPH0328930B2 - - Google Patents
Info
- Publication number
- JPH0328930B2 JPH0328930B2 JP62039334A JP3933487A JPH0328930B2 JP H0328930 B2 JPH0328930 B2 JP H0328930B2 JP 62039334 A JP62039334 A JP 62039334A JP 3933487 A JP3933487 A JP 3933487A JP H0328930 B2 JPH0328930 B2 JP H0328930B2
- Authority
- JP
- Japan
- Prior art keywords
- casing
- ocular
- transducer
- eye
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 210000005252 bulbus oculi Anatomy 0.000 claims description 4
- 239000012777 electrically insulating material Substances 0.000 claims description 3
- 210000001508 eye Anatomy 0.000 description 14
- 230000000004 hemodynamic effect Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 230000004410 intraocular pressure Effects 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 230000017531 blood circulation Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 210000004087 cornea Anatomy 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 230000035479 physiological effects, processes and functions Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/25—Bioelectric electrodes therefor
- A61B5/251—Means for maintaining electrode contact with the body
- A61B5/252—Means for maintaining electrode contact with the body by suction
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
- A61B5/316—Modalities, i.e. specific diagnostic methods
- A61B5/398—Electrooculography [EOG], e.g. detecting nystagmus; Electroretinography [ERG]
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は眼球学に使用される医療機器に関し、
特に、眼球血行力学の検査に用いる眼球レオクラ
フイ変換器に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a medical device used in ophthalmology,
In particular, it relates to an ocular rheocratic transducer used for testing ocular hemodynamics.
眼球組織のインピーダンスの変化を記録するこ
とは目の血液循環検査において重要な方法であ
る。この目的のために使用される眼球レオグラフ
イ変換器の設計は極めて重要である。 Recording changes in the impedance of ocular tissues is an important method in ocular blood circulation testing. The design of the ocular rheographic transducer used for this purpose is extremely important.
従来公知の眼球レオグラフイ変換器としてバツ
テライム（Batterhelm）眼球レオグラフイ変換
器がある。これは絶縁材料で作られた眼球の表面
に係合する球状内表面を有するケーシング、該ケ
ーシングの内表面上の電極、および真空源に該ケ
ーシングを連結させるパイプを具備する（A.P.
Nesterov他、眼内圧（生理学と病理学）モスク
ワ、ナウカ出版社、1974年194−207頁、参考）、
この変換器を使用する場合には、眼球表面と電極
との接触、および目の上での該変換器のケーシン
グ保持はケーシング内表面と眼球表面との間に真
空状態を作ることによつて行なわれる。しかしな
がら、真空状態の適用に起因する目の圧迫のため
に、目の血行力は阻害され、その結果としてのレ
オグラフイ記録は信頼性のあるものとは考えられ
ない。また、電極の圧力を均一に保持することは
困難である。現実には、親密な圧迫と保持が行な
われるのは該変換器ケーシングの中心部分だけで
あり、その縁部の接触の親密性は悪影響を受けて
いてインピーダンスは主として血液補充の変化関
数というより接触表面積の関数になつている。
A conventionally known ocular rheographic transducer is the Batterhelm ocular rheographic transducer. It comprises a casing having a spherical inner surface that engages the surface of the eyeball made of an insulating material, an electrode on the inner surface of the casing, and a pipe connecting the casing to a vacuum source (AP
Nesterov et al., Intraocular Pressure (Physiology and Pathology) Moscow, Nauka Publishing House, 1974, pp. 194-207, Reference);
When using this transducer, contacting the ocular surface with the electrodes and holding the transducer casing on the eye is achieved by creating a vacuum between the inner surface of the casing and the ocular surface. It will be done. However, due to the compression of the eye due to the application of vacuum conditions, the blood circulation of the eye is inhibited and the resulting rheographic recordings are not considered reliable. Furthermore, it is difficult to maintain uniform pressure on the electrodes. In reality, intimate compression and retention occurs only in the central portion of the transducer casing, and the intimacy of contact at its edges is adversely affected, with impedance primarily a function of contact rather than blood replenishment changes. It is a function of surface area.
本発明は電極と眼球表面との均一かつ親密な接
触を測定の間中確実にするように眼球レオグラフ
イ変換器を設計し、それにより眼内圧および血行
力に対する真空状態適用中の圧力低下の程度によ
る影響を解消しようとするものである。
The present invention has designed an ocular rheography transducer to ensure uniform and intimate contact between the electrodes and the ocular surface throughout the measurement, thereby reducing the degree of pressure drop during the application of vacuum to intraocular pressure and hemodynamic forces. This is an attempt to eliminate the impact.
上記問題を解決するための本発明による眼球レ
オグラフイ変換器は、実質的に、球状の内表面を
有する電気絶縁材料からなり、眼球の表面と接触
するようになつているケーシング、該ケーシング
の内表面上の電極、および真空源に該ケーシング
を連結するためのパイプを有する。そして、本発
明によれば、前記ケーシングは２層によつて形成
され、この２層は該層間に前記パイプに連通する
スペースを形成するように該ケーシングの周辺に
沿つて密封状態に連結されており、該層のうち内
層は眼球に適合するように形成されかつ複数の貫
通孔を有する。
The ocular rheographic transducer according to the invention for solving the above problems consists of a casing consisting essentially of an electrically insulating material having a spherical inner surface and adapted to be in contact with the surface of the eye; an electrode on the top, and a pipe for connecting the casing to a vacuum source. According to the present invention, the casing is formed of two layers, and the two layers are connected in a sealed manner along the periphery of the casing so as to form a space communicating with the pipe between the layers. The inner layer is formed to fit the eyeball and has a plurality of through holes.
〔実施例〕
次に、本発明の１実施態様を参照して本発明を
説明する。[Example] Next, the present invention will be described with reference to one embodiment of the present invention.
添付図面において、本発明による眼球レオグラ
フイ変換器は、電気絶縁材料により作られた２層
の球状ケーシング１の形状をし、真空源（図示せ
ず）に連結するためのパイプ２を有し、かつ該ケ
ーシングの内表面上に設置された電極３を有す
る。ケーシング１の内層４および外層５はケーシ
ング１の周辺に沿つて連結部６の位置で密封状に
相互に連絡され、かつ該２層４と５との間にはス
ペース７が形成されている。このスペースはパイ
プ２に連通している。内層４は眼球に適合するよ
うな形状に形成されていて複数の貫通孔８を具備
する。電極３の鉛板は密封状態でケーシング１の
外側に延びてレオグラフ（図示せず）に接続され
る外部コンダクタ９に連結されている。 In the accompanying drawings, an ocular rheographic transducer according to the invention is shown in the form of a two-layer spherical casing 1 made of electrically insulating material and having a pipe 2 for connection to a vacuum source (not shown) and It has an electrode 3 installed on the inner surface of the casing. The inner layer 4 and the outer layer 5 of the casing 1 are interconnected in a sealing manner at the joint 6 along the periphery of the casing 1, and a space 7 is formed between the two layers 4 and 5. This space communicates with pipe 2. The inner layer 4 is shaped to fit the eyeball and includes a plurality of through holes 8. The lead plate of the electrode 3 is connected in a sealed manner to an external conductor 9 which extends outside the casing 1 and is connected to a rheograph (not shown).
上記眼球レオグラフイ変換器は次の如く作用す
る。
The ocular rheography transducer described above operates as follows.
上記ケーシング１は目の角膜がケーシング１の
中央に位置するように目の上に設置される。真空
状態は上記スペース７内、および上記層４と眼球
の表面との間に上記パイプ２と上記孔８を介して
真空源によつて作られる。このようにして、層４
の内表面は目の表面に緊密に押圧され、目の組織
と上記電極３の全表面との接触が親密かつ均一に
保たれる。内層４の硬度は該層が真空作用下で変
形せず、目の前部のいかなる変形をも排除するよ
うなものが選択される。このことは血行力学的検
査を行なう上に極めて重要である。層４は例え
ば、ポリメチルメタクリレートによつて製造でき
る。眼球に適合する形状に形成されかつ孔８を有
する内層４の設置は目の上のケーシング１の誤設
定を防止する働きをする。というのは、該ケーシ
ングが誤つて設置された場合にはスペース７内の
真空状態が悪作用して孔８の１部が眼球表面に接
触せず、それにより上記変換器のケーシング１が
目の上に固定されないことになるからである。上
記外部コンダクタ９はレオグラフに連結され、レ
オグラフの記録が達成される。検査のための真空
状態を解除した後に、上記変換器を目から除去す
る。 The casing 1 is placed on the eye so that the cornea of the eye is located in the center of the casing 1. A vacuum is created in the space 7 and between the layer 4 and the surface of the eye via the pipe 2 and the hole 8 by a vacuum source. In this way, layer 4
The inner surface of the electrode 3 is pressed tightly against the eye surface to maintain intimate and uniform contact between the eye tissue and the entire surface of the electrode 3. The hardness of the inner layer 4 is selected such that it does not deform under the action of a vacuum and excludes any deformation of the front part of the eye. This is extremely important when performing hemodynamic tests. Layer 4 can be made of polymethyl methacrylate, for example. The provision of an inner layer 4 shaped to fit the eye and having holes 8 serves to prevent missetting of the casing 1 on the eye. This is because, if the casing is placed incorrectly, the vacuum conditions in the space 7 will be adversely affected and part of the hole 8 will not come into contact with the ocular surface, so that the transducer casing 1 will not be in contact with the ocular surface. This is because it will not be fixed on top. The external conductor 9 is connected to a rheograph and rheographic recording is achieved. After releasing the testing vacuum, the transducer is removed from the eye.
本発明による眼球レオグラフイ変換器は測定中
の電極と眼球表面との接触を均一かつ親密にし、
真空状態下における圧力低下の程度による眼内圧
に対するいかなる影響をも除去し、かつそのよう
にして目の血行力学的外界検査を実現して正確な
診断に寄与する。また、本発明による変換器は製
造が簡単であり操作に信頼性がある。
The ocular rheography transducer according to the invention provides uniform and intimate contact between the electrode and the ocular surface during measurement;
It eliminates any influence on intraocular pressure due to the degree of pressure drop under vacuum conditions, and thus realizes the hemodynamic external examination of the eye and contributes to accurate diagnosis. The transducer according to the invention is also simple to manufacture and reliable to operate.
添付図面は本発明による眼球レオグラフイ変換
器の横断面を示す。
１…ケーシング、２…パイプ、３…電極、４，
５…層、６…層４，５の連結部、７…スペース、
８…孔、９…コンダクタ。
The accompanying drawing shows a cross-section of an ocular rheographic transducer according to the invention. 1...Casing, 2...Pipe, 3...Electrode, 4,
5... Layer, 6... Connecting portion of layers 4 and 5, 7... Space,
8...hole, 9...conductor.
Claims (1)
を有する電気絶縁材料から成るケーシング１、該
ケーシング１の内表面上の電極３、および該ケー
シングを真空源に接続するためのパイプ２から成
り、該ケーシング１は該ケーシング１の周辺に沿
つて密封状態に相互が連結されて該パイプ２に連
通するスペースを形成する２層４，５により形成
されていて、かつ該ケーシングの内層４は眼球に
適合する形状であつて複数の貫通孔８を有するこ
とを特徴とする眼球レオグラフイ変換器。1 consisting of a casing 1 made of electrically insulating material with a spherical inner surface formed to contact the ocular surface, an electrode 3 on the inner surface of the casing 1, and a pipe 2 for connecting the casing to a vacuum source, The casing 1 is formed by two layers 4, 5 which are interconnected in a sealed manner along the periphery of the casing 1 to form a space communicating with the pipe 2, and the inner layer 4 of the casing is in contact with the eyeball. An ocular rheography transducer characterized by having a plurality of through holes 8 having a matching shape.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU4023143 | 1986-02-25 | ||
| SU864023143A SU1428344A1 (en) | 1986-02-25 | 1986-02-25 | Ophthalmorheographic sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62236533A JPS62236533A (en) | 1987-10-16 |
| JPH0328930B2 true JPH0328930B2 (en) | 1991-04-22 |
Family
ID=21221933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62039334A Granted JPS62236533A (en) | 1986-02-25 | 1987-02-24 | Eyeball reography converter |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS62236533A (en) |
| BG (1) | BG49738A1 (en) |
| CS (1) | CS91387A1 (en) |
| DD (1) | DD281496A7 (en) |
| DE (1) | DE3705375A1 (en) |
| FR (1) | FR2594677A1 (en) |
| HU (1) | HU194726B (en) |
| IT (1) | IT1218563B (en) |
| SU (1) | SU1428344A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2713913B1 (en) * | 1993-12-21 | 1996-03-08 | Dencott Lab Sa | Shell for electroretinography and mold for the manufacture of this shell. |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1224847B (en) * | 1958-12-22 | 1966-09-15 | Dr Med Walter Laabs | Device for suction mass and simultaneous electrification |
| GB1128329A (en) * | 1964-12-23 | 1968-09-25 | Nat Res Dev | Electrodes for making electrical contact to the living body of a mammal |
| GB1542859A (en) * | 1975-12-18 | 1979-03-28 | Nat Res Dev | Electrode assemblies |
-
1986
- 1986-02-25 SU SU864023143A patent/SU1428344A1/en active
-
1987
- 1987-02-10 BG BG78414A patent/BG49738A1/en unknown
- 1987-02-11 DD DD87299850A patent/DD281496A7/en not_active IP Right Cessation
- 1987-02-12 CS CS87913A patent/CS91387A1/en unknown
- 1987-02-19 HU HU87648A patent/HU194726B/en not_active IP Right Cessation
- 1987-02-20 DE DE19873705375 patent/DE3705375A1/en not_active Withdrawn
- 1987-02-24 IT IT41532/87A patent/IT1218563B/en active
- 1987-02-24 FR FR8702403A patent/FR2594677A1/en not_active Withdrawn
- 1987-02-24 JP JP62039334A patent/JPS62236533A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| HU194726B (en) | 1988-03-28 |
| IT8741532A0 (en) | 1987-02-24 |
| HUT43253A (en) | 1987-10-28 |
| DE3705375A1 (en) | 1987-11-05 |
| CS91387A1 (en) | 1990-06-13 |
| IT1218563B (en) | 1990-04-19 |
| DD281496A7 (en) | 1990-08-15 |
| FR2594677A1 (en) | 1987-08-28 |
| JPS62236533A (en) | 1987-10-16 |
| BG49738A1 (en) | 1992-02-14 |
| SU1428344A1 (en) | 1988-10-07 |
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