GB1398670A - Apparatus for monitoring heart-beat activity - Google Patents

Apparatus for monitoring heart-beat activity

Info

Publication number
GB1398670A
GB1398670A GB5340573A GB5340573A GB1398670A GB 1398670 A GB1398670 A GB 1398670A GB 5340573 A GB5340573 A GB 5340573A GB 5340573 A GB5340573 A GB 5340573A GB 1398670 A GB1398670 A GB 1398670A
Authority
GB
United Kingdom
Prior art keywords
heart
rate
resonant circuit
doppler
detector
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
Application number
GB5340573A
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.)
F Hoffmann La Roche AG
Original Assignee
F Hoffmann La Roche AG
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 F Hoffmann La Roche AG filed Critical F Hoffmann La Roche AG
Publication of GB1398670A publication Critical patent/GB1398670A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/02—Measuring pulse or heart rate
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/024—Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02411—Detecting, measuring or recording pulse rate or heart rate of foetuses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/43—Detecting, measuring or recording for evaluating the reproductive systems
    • A61B5/4306—Detecting, measuring or recording for evaluating the reproductive systems for evaluating the female reproductive systems, e.g. gynaecological evaluations
    • A61B5/4343—Pregnancy and labour monitoring, e.g. for labour onset detection
    • A61B5/4362—Assessing foetal parameters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/08—Detecting organic movements or changes, e.g. tumours, cysts, swellings
    • A61B8/0866—Detecting organic movements or changes, e.g. tumours, cysts, swellings involving foetal diagnosis; pre-natal or peri-natal diagnosis of the baby
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/48—Diagnostic techniques
    • A61B8/488—Diagnostic techniques involving Doppler signals
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/50—Systems of measurement, based on relative movement of the target
    • G01S15/52—Discriminating between fixed and moving objects or between objects moving at different speeds

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • Pregnancy & Childbirth (AREA)
  • Cardiology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Gynecology & Obstetrics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Pediatric Medicine (AREA)
  • Acoustics & Sound (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Reproductive Health (AREA)
  • Physiology (AREA)
  • General Physics & Mathematics (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

1398670 Ultrasonic heart-rate monitor F HOFFMANN-LA ROCHE & CO AG 16 Nov 1973 [8 Dec 1972] 53405/73 Heading H4D Ultrasonic Doppler apparatus for providing a one-per beat signal indicative of heart-rate includes filters 13, 14 actuable by a switch 15 to pass Doppler signals in one of two frequency bands, a resonant circuit 17 for de-emphasizing in the passed band frequencies other than that to which the resonant circuit is tuned and for providing an output indicative of heart-rate, a phase detector 23 responsive to any phase shift between the input and output signals of the resonant circuit to retune the resonant circuit slowly so as to track the frequency of the input signals to 17, a pulse generator 19 for inhibiting the action of phase detector 23 in intervals between input signals to 17, and a detector 16 responsive to selected values of heart-rate to actuate switch 15 and to change via switch 21 the pulse period of generator 19. The input to filters 13, 14 is derived by an AGC-amplifying, rectifying and smoothing arrangement 11, 12. Filters 13, 14 have Doppler pass bands corresponding to heart-rates of 30-120 and 30-150 beats per minute (b.p.m.) respectively and are switched into circuit when detector 16 receives from a heart-rate counter a signal (on line 32) indicative of a rate respectively below or above 100 b.p.m. It is stated that for foetal heart-rates below about 140 b.p.m., a Doppler pulse D3 (Fig. 1) occurs in addition to the pulses D2, D4 normally occurring. To prevent the heart-rate counter responding to D3, D4 and spurious noise, phase detector 23 is inhibited by the pulses from generator 19 which are switched to have a period of 100 or 350 ms. depending on whether the heart-rate is respectively above or below 140 b.p.m.
GB5340573A 1972-12-08 1973-11-16 Apparatus for monitoring heart-beat activity Expired GB1398670A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31337372A 1972-12-08 1972-12-08

Publications (1)

Publication Number Publication Date
GB1398670A true GB1398670A (en) 1975-06-25

Family

ID=23215464

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5340573A Expired GB1398670A (en) 1972-12-08 1973-11-16 Apparatus for monitoring heart-beat activity

Country Status (6)

Country Link
JP (1) JPS5324757B2 (en)
CH (1) CH558655A (en)
DE (1) DE2360206C3 (en)
FR (1) FR2209534B1 (en)
GB (1) GB1398670A (en)
NL (1) NL161354C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7402143B2 (en) 2002-08-01 2008-07-22 Biopad Ltd Bio-filter pad for facilitating the detection of an occurrence of a physiological action and method therefor and fetal activity monitoring apparatus
US8075500B2 (en) 2007-07-17 2011-12-13 Biopad Ltd. Fetal wellbeing monitoring apparatus and pad therefor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2430756A1 (en) * 1978-07-11 1980-02-08 Elf Aquitaine Foetal heartbeat display and recorder - uses narrow bandpass filter to eliminate parasitic signals from ecg
JPS586103U (en) * 1981-07-07 1983-01-14 ブリヂストンサイクル株式会社 portable stove

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE755557A (en) * 1969-09-03 1971-03-01 Hoffmann La Roche BLOOD PRESSURE TESTING DEVICE
JPS5241588B1 (en) * 1970-10-20 1977-10-19
US3763851A (en) * 1971-12-08 1973-10-09 Hoffmann La Roche Ultrasonic doppler fetal heart monitor with variable resonance means

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7402143B2 (en) 2002-08-01 2008-07-22 Biopad Ltd Bio-filter pad for facilitating the detection of an occurrence of a physiological action and method therefor and fetal activity monitoring apparatus
US8075500B2 (en) 2007-07-17 2011-12-13 Biopad Ltd. Fetal wellbeing monitoring apparatus and pad therefor

Also Published As

Publication number Publication date
NL161354C (en) 1980-02-15
CH558655A (en) 1975-02-14
NL161354B (en) 1979-09-17
JPS4989388A (en) 1974-08-27
FR2209534A1 (en) 1974-07-05
DE2360206A1 (en) 1974-06-27
DE2360206B2 (en) 1975-06-19
DE2360206C3 (en) 1983-01-13
JPS5324757B2 (en) 1978-07-22
NL7316584A (en) 1974-06-11
FR2209534B1 (en) 1977-06-10

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee