JPS55140125A - Piezo-electric converter for sphygmomanometry - Google Patents

Piezo-electric converter for sphygmomanometry

Info

Publication number
JPS55140125A
JPS55140125A JP4827679A JP4827679A JPS55140125A JP S55140125 A JPS55140125 A JP S55140125A JP 4827679 A JP4827679 A JP 4827679A JP 4827679 A JP4827679 A JP 4827679A JP S55140125 A JPS55140125 A JP S55140125A
Authority
JP
Japan
Prior art keywords
photodetector
slit plate
sphygmomanometer
diaphragm
intensity
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.)
Pending
Application number
JP4827679A
Other languages
Japanese (ja)
Inventor
Ikuo Takeda
Tsukasa Honda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
COPAL TAKEDA ENG KK
KOPARU TAKEDA ENGINEERING KK
Original Assignee
COPAL TAKEDA ENG KK
KOPARU TAKEDA ENGINEERING KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by COPAL TAKEDA ENG KK, KOPARU TAKEDA ENGINEERING KK filed Critical COPAL TAKEDA ENG KK
Priority to JP4827679A priority Critical patent/JPS55140125A/en
Publication of JPS55140125A publication Critical patent/JPS55140125A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain a sphygmomanometer without influence of the external temperature and mechanical error of simple structure by an apparatus wherein amount of pressure is transformed into a mechanical displacement, which is then transformed into a change in intensity of light, and then electrical output is obtained in proportion to the change in intensity thereof.
CONSTITUTION: A light source 4 and a photodetector 5 are provided in a dark box 6. A fixed slit plate 3 and a movable slit plate 2 connected to a diaphragm 1 are provided between the light source and the photodetector. The movable slit plate 2 is moved in accordance with a displacement of the diaphragm 1, so that the overlapped area with a hole formed in the fixed slit plate 3 is changed and then intensity of light entering into the photodetector 5 is changed. Output of the photodetector is displayed through an analog-digital converter 7. Accordingly, pressure produced at a manchette is transmitted to the diaphragm 1, and the times when Korotkoff's sound appears and disappears are displayed digitally thus constituting sphygmomanometer. By so doing, it becomes possible to obtain a sphygmomanometer with simple structure and high accuracy.
COPYRIGHT: (C)1980,JPO&Japio
JP4827679A 1979-04-19 1979-04-19 Piezo-electric converter for sphygmomanometry Pending JPS55140125A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4827679A JPS55140125A (en) 1979-04-19 1979-04-19 Piezo-electric converter for sphygmomanometry

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4827679A JPS55140125A (en) 1979-04-19 1979-04-19 Piezo-electric converter for sphygmomanometry

Publications (1)

Publication Number Publication Date
JPS55140125A true JPS55140125A (en) 1980-11-01

Family

ID=12798906

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4827679A Pending JPS55140125A (en) 1979-04-19 1979-04-19 Piezo-electric converter for sphygmomanometry

Country Status (1)

Country Link
JP (1) JPS55140125A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58155325A (en) * 1982-03-12 1983-09-16 Copal Takeda Medical Kenkyusho:Kk Pressure sensor
JPS5960333A (en) * 1982-09-30 1984-04-06 Anritsu Corp Pressure detector
JPS60100937A (en) * 1983-11-09 1985-06-04 セイコーインスツルメンツ株式会社 Electronic hemomanometer
JP2016508611A (en) * 2013-02-22 2016-03-22 ローズマウント インコーポレイテッド Self-powered optical detector for mechanical instruments

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58155325A (en) * 1982-03-12 1983-09-16 Copal Takeda Medical Kenkyusho:Kk Pressure sensor
JPS5960333A (en) * 1982-09-30 1984-04-06 Anritsu Corp Pressure detector
JPS60100937A (en) * 1983-11-09 1985-06-04 セイコーインスツルメンツ株式会社 Electronic hemomanometer
JP2016508611A (en) * 2013-02-22 2016-03-22 ローズマウント インコーポレイテッド Self-powered optical detector for mechanical instruments

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