US3807388A - Heartbeat rate monitors - Google Patents

Heartbeat rate monitors Download PDF

Info

Publication number
US3807388A
US3807388A US17214971A US3807388A US 3807388 A US3807388 A US 3807388A US 17214971 A US17214971 A US 17214971A US 3807388 A US3807388 A US 3807388A
Authority
US
Grant status
Grant
Patent type
Prior art keywords
heartbeat rate
transducer
signal
means
display
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
Application number
Inventor
T Orr
R Ogden
Original Assignee
T Orr
R Ogden
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
Grant date

Links

Images

Classifications

    • GPHYSICS
    • G04HOROLOGY
    • G04GELECTRONIC TIME-PIECES
    • G04G21/00Input or output devices integrated in time-pieces
    • G04G21/02Detectors of external physical values, e.g. temperature
    • G04G21/025Detectors of external physical values, e.g. temperature for measuring physiological data
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/02Detecting, 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
    • A61B5/024Detecting, measuring or recording pulse rate or heart rate
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Detecting, measuring or recording for diagnostic purposes; Identification of persons
    • A61B5/02Detecting, 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
    • A61B5/024Detecting, measuring or recording pulse rate or heart rate
    • A61B5/02438Detecting, measuring or recording pulse rate or heart rate with portable devices, e.g. worn by the patient

Abstract

A heartbeat rate monitor or personal pulse indicator comprises a transducer for detecting heartbeats and supplying an electric signal corresponding to the heartbeat rate, and a display for indicating the heratbeat rate. The display is incorporated in a watch casing which also incorporates means to display the time of day, the watch casing preferably being mounted on a wrist-strap which carries the transducer.

Description

United States Patent [191 Orr et a1.

[ Apr. 30, 1974 1 HEARTBEAT RATE MONITORS [75] Inventors: Thomas Orr, Flat 14, Sandringham Ct., 18 Winn Rd., Southampton; Roland Ogden, Portsmouth, both of England [73] Assignee: said Orr, by said Ogden [22] Filed: Aug. 16, 1971 [21] Appl. No.: 172,149

[30] Foreign Application Priority Data Sept. 29, 1970 Great Britain 46151/70 [52] U.S. Cl 128/205 R, 128/205 P, 128/205 T [51] Int. Cl A6lb 5/02 [58] Field ofSearch 128/ 2.05 P, 2.05 T, 2.06 F, 128/205 R, 2.06 A, 2 R; 58/28 A, 28 B, 28 D, 26 R, 23 TF; 307/208 Primary Examiner-Richard A. Gaudet Assistant Examiner-43cc S. Cohen Attorney, Agent, or Firm-John E. Becker [5 7] ABSTRACT A heartbeat rate monitor or personal pulse indicator comprises a transducer for detecting heartbeats and supplying an electric signal corresponding IO the heartbeat rate, and a displayfor indicating the heratbeat rate. The display is incorporated in a watch casing which also incorporates means to display the time of day, the watch casing preferably being mounted on [56] References Cited a wrist-strap which carries the transducer.

UNITED STATES PATENTS 3,294,988 12/1966 Packard 128/2 R UX 12 Claims, 8 Drawing Figures 33 36 36 1 2 OSCILLATOR DlVlDER DIVlDER DECODER D 35 DECODER P TRANSDUCER'E? 32\ l [38 DECODER Y SHAPER '41 39 6O 62 DlVlDER. 2 2

AND COUNTER MEMORY RESET 1 LL\READ OUT PATENTEnAPRw I974 SHEET 1 [1F 3 LAMPLIFIER 1 15 I i :AMPLIFIERI FIG. 2.

PATENTEDAPR 30 I974 SHEET 3 OF 3 PENDULUM r i WAT'CH' MECHANISM 72 73 I TUNING DIVIDER W FIG. 7.

TRANSDUCER i ,/38 w 1 S2 'SHAPER MONOSTABLE T r I DIVIDER AND COUNTER MEMORY i I -REsET r T CONVERTER MET R /3I7- TRANSDUCER I 38 SHAPER 7 MONO STA'BLE SMOOTHING ME'TER F/GB.

/A4 E7Vra/5 HEARTBEAT RATE MONITORS BACKGROUND OF THE INVENTION The usual method of ascertaining a persons heartbeat rate is by counting heartbeats which are detected manually, usually at the wrist, over a short period timed by a watch or clock. This method is generally somewhat unsatisfactory, because the short period chosen is usually less than one minute and so errors may occur in the necessary mental arithmetic. Moreover, this methodonly provides a measurement of the heartbeat rate during the actual period of counting, and this somewhat time-consuming operation has to be repeated every time a fresh measurement is required. This is particularly inconvenient in the case of certain heart conditions where quick and possibly frequent measurements are required.

SUMMARY OF THE INVENTION One object of the present invention is to provide a heartbeat rate monitor. I

Another object of the present invention is to provide a heartbeat rate monitor which is incorporated into, or is made in the general form of a wrist-watch.

According to the present invention a heartbeat rate monitor comprises a transducer to detect heartbeats and provide an electric signal corresponding to the heartbeat rate, and display means operated in dependence on said signal to display the heartbeat rate digitally or on a dial.

The invention can be embodied in various different forms. A particularly convenient form isto incorporate the heartbeat rate monitor in a wrist-watch and mount the necessary transducer in the wrist strap so as continually to be actuated by heartbeats detected in the wrist. The signal supplied by the transducer is supplied to an electronic circuit within the watch casing. The circuit also derives a timing signal from the watch mechanism for comparison with the signal supplied by the transducer, and the output is displayed on the watch face either by a pointer moving over a scale or by a digital display which may comprise light emitting diodes. Alternatively, the heartbeat rate monitor can be made in the general form of a wrist-watch for wearing on the wrist, but without being incorporated into an actual wristwatch.

BRIEF DESCRIPTION OF THE DRAWINGS.

Four heartbeat rate monitors in accordance with the present invention will now be described by way of example with reference to the accompanying drawings, in which:

FIG. 1 shows diagrammatically a first transducer,

FIG. 2 shows diagrammatically a second transducer,

FIG. 3 shows diagrammatically the mounting of a transducer on a wrist strap,

FIG. 4 is a section on the line 4-4 of FIG. 3, and

FIGS. 5 to 8 show diagrammatically the electric circuits of the four heartbeat rate monitors respectively.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Each of the embodiments to be described comprises a transducer to detect heartbeats and to provide an electric signal corresponding to the heartbeat rate. Al-

though specific transducers will be described, other suitable transducers can of course be used, the essential feature being that an electric signal corresponding to the heartbeat rate is produced. In the description which follows it will be assumed that the transducer is to be placed or worn in contact with a persons wrist, although the invention is not limited to this arrangement, because the signal can be derived from any other suitable place on the body.

Referring to FIG. 1, the transducer shown therein comprises a pressure sensitive resistor pad I, mounted so as to project from the inner surface of a wrist strap (not shown) and electrically connected so as to be part of a resistive chain 2 connected across an electric power supply derived from a battery. In use, arterial pulses in the wrist will cause variations in the resistance of the resistor 1 and hence variations in the voltage at a terminal 3. A signal derived from the terminal 3 is supplied to an amplifier 4 which, like the remainder of the electrical circuitry, is preferably in the form of an integrated circuit, the output of the amplifier 4 being used in producing the required display.

FIG. 2 shows an alternative form of transducer making use of a pressure sensitive transistor 10. The base is connected to the junction of resistors 11 and 12 connected across the power supply, the collector is connected by way of a resistor 13 to one pole of the power supply, and the emitter is connected directly to the other pole of the power supply. This results in a constant bias on the base of the transistor 10, and as the applied pressure varies due to the pulse in the wrist, the collector current will vary, so that a signal corresponding toheartbeat rate can be derived from a terminal 14 and supplied to an amplifier 15.

Referring now to FIGS. 3 and 4, in both the cases described above, the pressure sensitive element 1 or 10 of the transducer is mounted in a Wrist strap 20 and surrounded by a stabilizing frame 21 to reduce the effect of random strap movements relative to the wrist 22. The frame 21 is preferably made of a resilient material and in order to ensure that the pressure sensitive element is pressed against the wrist 22 it projects somewhat more from the'strap 20 than does the frame 21.

In alternative arrangements the transducer is mounted so that it can be worn permanently or semipermanently on some other part of the body, or alternatively is mounted in a small pad or strap which can be placed against or round an appropriate part of the body when a measurement is to be made.

Referring now to FIG. 5, this shows the electric circuit of a heartbeat rate monitor incorporated into and forming part of an electronic wrist-watch, preferably with time and heartbeat rate display by light emitting diodes.

The circuit comprises a crystal controlled oscillator 30 operating at 16.384 kHz., the output signal of which is supplied to a l5-stage divider circuit 31 which supplies an output signal of 0.5 Hz. which is suitable for deriving the time indication. This signal is supplied directly to a binary coded decimal to decimal decoder 32 to provide an output for display of seconds, and by way of a further divider circuit 33 to decoders 34 and 35 for the display of minutes and hours respectively. The outputs of the decoders 32, 34 and 35 are supplied to an array 36 of light emitting diodes so that the time is displayed digitally.

A signal derived from the oscillator 30 is also compared with the signal supplied by the heartbeat rate transducer 37 (which may be as described with reference to FIG. 1 or 2) to provide a digital display of the heartbeat rate. The signal supplied by the transducer 37 is supplied by way of a shaper circuit 38 to an AND gate 39 to which a signal derived from the divider 31 is also supplied. For a lost or gained pulse from the divider 31 to be insignificant, the frequency of the signal supplied by the divider 31 to the gate 39 should be say 100 times the fastest heartbeat rate of say 150 beats per minute, so that the frequency required is about 250 pulses per second. To derive such a signal the divider 31 can be intercepted at the appropriate point to give an output of 256 pulses per second, this signal being supplied to the gate 39. The output of the gate 39 is supplied to an accumulating counter 40; the number of pulses at the minimum heartbeat rate of say 30 pulses per minute determining the capacity of the counter 40, this being 512 in the example given above.

To reduce the possibility of occasional random heartbeat periods being displayed, it is preferable for the output of the shaper circuit 38 to be divided in frequency by a divider 41 before being supplied to the gate 39 so as to average the measurement over several heartbeat periods. This necessitates a corresponding increase in the capacity of the counter 40. Particularly where this form of operation is used, it is desirable that the output of the counter 40 is supplied to a memory 42, so that the measurement obtained during the preceding counting period can be displayed during each current counting period. A further output of the gate 39 is connected to a reset circuit 43 which resets the counter 40 at the end of each counting period and causes the reading then in the counter 40 to be transferred to the memory 42. The number of pulses counted in each counting period varies inversely with the heartbeat rate and hence a suitable readout circuit 44 can be provided to give signals corresponding to ls. lOs and units oriea'fibeat'rateror suppl y to an array 45 of light emitting diodes whereby the heartbeat rate is displayed.

It is not essential that either the time display or the heartbeat rate display should be continuous, and as the electric power consumption of the arrays 36 and 45 is high relative to that of the remainder of the electronics, which is preferably in the form of integrated circuits, it may be preferable in some instances for these displays to be intermittent and to be illuminated on demand for example by operating a press-button.

As an alternative, the arrays 36 and 45 of light emitting diodes can be replaced by some suitable mechanical arrangements whereby the time is displayed in the conventional way by means of hands and a dial, and the heartbeat rate is displayed by means of a pointer and a dial graduated in heartbeats per minute.

Referring now to FIG. 6, this shows a heartbeat rate monitor incorporated in and forming part of an ordinary mechanical watch. In this case an electric signal for timing purposes is derived from the balance wheel 50 of the watch which is oscillating at about Hz. An electric signal is derived by way of an electromagnetic pick-off, wherein the passage of a suitable spoke or protrusion of the balance wheel 50 reduces the reluctance of a magnetic path and triggers a relaxation oscillator 51. The output of the oscillator 51 is applied by way of a monostable circuit 52 to an AND gate 39.

Also supplied to the gate 39 is the output signal from the transducer 37 which is supplied by way of the shaper circuit 38 and dividing circuit 41, the dividing circuit 41 preferably dividing by 5 so as to average the measurement over 5 heartbeats and give acceptable accuracy. The output of the gate 39 is supplied to the counter 40 which incorporates division to bring the measurement to a convenient time period. As in the previous embodiment a further output of the gate 39 is connected to a resetting circuit 43 whereby the counter 40 is reset at the end of each counting period, the count then accumulated in the counter 40 being transferred to a memory 42. The output of the memory 42 is connected to a suitable display arrangement which comprises a binary coded decimal to analog converter 60 and a moving coil meter 61 whereby the heartbeat rate is displayed by a pointer movable over a suitably graduated scale. The meter 61 is conventional in form and employs a taut-wire suspension, but is of suitable size for incorporation into the watch.

Referring now to FIG. 7, this shows the electric circuit of a heartbeat rate monitor incorporated into and forming part of an electric wrist-watch in which the balance wheel of the conventional mechanism is replaced by an electrically impulsed pendulum operating at the same frequency, or a tuning fork oscillator operating at a higher frequency. Both these cases are indicated in FIG. 7, in the case of the pendulum system, a pendulum supplying a signal to a mechanism 71 for driving the hands of the watch, whilst in the tuning fork system the tuning fork 72 supplies a signal by way of a divider 73 to the mechanism 71.

In either case a signal is derived and supplied to a monostable circuit 52 the output of which is supplied to the gate 39, this part of the circuit being similar to that described above with reference to FIG. 6.

The tuning fork system allows a higher measurement accuracy because a high frequency signal can be derived from the dividing circuit 73 and this permits more pulses to be counted during each period defined by the dividing circuit 41. Indeed this makes it possible in certain instances to dispense with the dividing circuit 41. Apart from the points mentioned the operation is similar to that of the embodiments described with reference to FIGS. 5 and 6.

Referring now to FIG. 8, this shows the electric circuit of a heartbeat rate monitor which is independent of any watch mechanism. In this case a signal derived from the transducer 37 is supplied by way of the shaping circuit 38 to a monostable circuit which incorporates a timing reference which it compares with the heartbeat period. The output of the monostable circuit 80 is a signal representing the instantaneous heartbeat period, and this is fed by way of a smoothing circuit 81 to a moving coil meter 62 the pointer of which moves over a suitable scale to indicate the average heartbeat rate. The circuit parameters are selected to avoid rapid fluctuations in the reading whilst at the same time giving an acceptable speed of response.

It will be apparent that many modifications additional to those referred to above can be made without departing from the scope of the invention as defined by the appended claims. In particular, and as mentioned above, the transducer can be incorporated into a pad which can be placed on some suitable part of the body other than the wrist. It is notnecessary that the transducer is continuously connected to the display means,

a transducer to detect heartbeats and provide an electric signal the frequency of which corresponds to the heartbeat rate;

compact timing means to produce an electric timing signal;

comparison means connected in circuit with said transducer and timing means so as to compare the transducer signal with said timing signal to produce a heartbeat rate signal which represents the heartbeat rate per unit time;

a wrist watch type casing within which said compact timing means and said comparison means are incorporated; and

first and second display means operably connected with said circuit and mounted in said watch casing so as to be visible to a user;

the first display means being operable in dependence on said timing signal to display the time of day, and the second display means being operable in dependence on said heartbeat rate signal to directly display the heartbeat rate.

2. A heartbeat rate monitor according to claim 1 wherein said timing signal is derived from a crystal controlled oscillator incorporated in said watch casing.

3. A heartbeat rate monitor according to claim 1 wherein said timing signal is derived from a conventional watch mechanism by means of an electromagnetic pick-off, said watch mechanism being incorporated in said watch casing.

4. A heartbeat rate monitor according to claim 1 wherein said timing signal is derived from a tuning fork incorporated in said watch casing.

5. A heartbeat rate monitor according to claim 1 wherein said timing signal is derived from an electrically impulsed pendulum incorporated in said watch casing.

6. A heartbeat rate monitor according to claim 1 wherein the transducer comprises a pressure sensitive resistor.

7. A heartbeat rate monitor according to claim 1 wherein the transducer comprises a pressure sensitive transistor.

8. A heartbeat rate monitor according to claim 1 wherein the second display means comprises a moving coil meter.

9. A heartbeat rate monitor according to claim 1 wherein the second display means comprises a pointer movable over a scale graduated in heartbeats per minute.

10. A heartbeat rate monitor according to claim 1 .wherein the first and second display means each comprise light emitting diodes.

11. A heartbeat rate monitor according to claim I further comprising a wrist-strap on which said watch casing and said transducer are mounted.

12. A portable, body attached directly readable heartbeat rate monitor comprising in combination:

a transducer to detect heartbeats and to provide an electric signal the frequency of which corresponds to the heartbeat rate;

said transducer being a pressure sensitive device of which the impedance varies in dependence upon applied pressure thereon;

compact timing means to produce first and second electric timing signals;

comparison means connected in circuit with said transducer and timing means so as to compare the tranducer signal with said second timing signal to thereby produce a heartbeat rate signal which represents the heartbeat rate per unit time;

a watch casing within which said timing means and said comparison means are incorporated;

a wrist-strap on which said watch casing and said transducer are mounted, the mounting of the tranducer being such that when the wrist-strap is worn on the wrist of a user the transducer detects arterial heartbeats in the wrist of the user; and

first and second display means including lightemitting diodes mounted in said watch casing so as to be visible to the user; the first display means being operable in dependence on said first timing signal to display the time of day, and the second display means being of a direct reading digital type operable in dependence on said heartbeat rate signal to display the heartbeat rate of the user in pulses per unit time.

Claims (12)

1. A body worn, compact heartbeat rate monitor comprising: a transducer to detect heartbeats and provide an electric signal the frequency of which corresponds to the heartbeat rate; compact timing means to produce an electric timing signal; comparison means connected in circuit with said transducer and timing means so as to compare the transducer signal with said timing signal to produce a heartbeat rate signal which represents the heartbeat rate per unit time; a wrist watch type casing within which said compact timing means and said comparison means are incorporated; and first and second display means operably connected with said circuit and mounted in said watch casing so as to be visible to a user; the first display means being operable in dependence on said timing sIgnal to display the time of day, and the second display means being operable in dependence on said heartbeat rate signal to directly display the heartbeat rate.
2. A heartbeat rate monitor according to claim 1 wherein said timing signal is derived from a crystal controlled oscillator incorporated in said watch casing.
3. A heartbeat rate monitor according to claim 1 wherein said timing signal is derived from a conventional watch mechanism by means of an electromagnetic pick-off, said watch mechanism being incorporated in said watch casing.
4. A heartbeat rate monitor according to claim 1 wherein said timing signal is derived from a tuning fork incorporated in said watch casing.
5. A heartbeat rate monitor according to claim 1 wherein said timing signal is derived from an electrically impulsed pendulum incorporated in said watch casing.
6. A heartbeat rate monitor according to claim 1 wherein the transducer comprises a pressure sensitive resistor.
7. A heartbeat rate monitor according to claim 1 wherein the transducer comprises a pressure sensitive transistor.
8. A heartbeat rate monitor according to claim 1 wherein the second display means comprises a moving coil meter.
9. A heartbeat rate monitor according to claim 1 wherein the second display means comprises a pointer movable over a scale graduated in heartbeats per minute.
10. A heartbeat rate monitor according to claim 1 wherein the first and second display means each comprise light emitting diodes.
11. A heartbeat rate monitor according to claim 1 further comprising a wrist-strap on which said watch casing and said transducer are mounted.
12. A portable, body attached directly readable heartbeat rate monitor comprising in combination: a transducer to detect heartbeats and to provide an electric signal the frequency of which corresponds to the heartbeat rate; said transducer being a pressure sensitive device of which the impedance varies in dependence upon applied pressure thereon; compact timing means to produce first and second electric timing signals; comparison means connected in circuit with said transducer and timing means so as to compare the tranducer signal with said second timing signal to thereby produce a heartbeat rate signal which represents the heartbeat rate per unit time; a watch casing within which said timing means and said comparison means are incorporated; a wrist-strap on which said watch casing and said transducer are mounted, the mounting of the tranducer being such that when the wrist-strap is worn on the wrist of a user the transducer detects arterial heartbeats in the wrist of the user; and first and second display means including light-emitting diodes mounted in said watch casing so as to be visible to the user; the first display means being operable in dependence on said first timing signal to display the time of day, and the second display means being of a direct reading digital type operable in dependence on said heartbeat rate signal to display the heartbeat rate of the user in pulses per unit time.
US3807388A 1970-09-29 1971-08-16 Heartbeat rate monitors Expired - Lifetime US3807388A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4615170 1970-09-29

Publications (1)

Publication Number Publication Date
US3807388A true US3807388A (en) 1974-04-30

Family

ID=10440061

Family Applications (1)

Application Number Title Priority Date Filing Date
US3807388A Expired - Lifetime US3807388A (en) 1970-09-29 1971-08-16 Heartbeat rate monitors

Country Status (6)

Country Link
US (1) US3807388A (en)
JP (1) JPS5934370B1 (en)
DE (1) DE2142095C3 (en)
FR (1) FR2106237A5 (en)
GB (1) GB1312107A (en)
NL (1) NL165370C (en)

Cited By (61)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4009708A (en) * 1975-05-29 1977-03-01 Fay Jr John J Pulse rate recorder
US4022192A (en) * 1974-10-21 1977-05-10 Laukien Gunther R Apparatus for measuring the frequency of cardiac pulses
US4058118A (en) * 1976-03-19 1977-11-15 Bunker Ramo Corporation Pulse counter
US4063410A (en) * 1976-03-01 1977-12-20 Welling Gregory J Digital watch including a signal transmitter
US4068654A (en) * 1975-02-19 1978-01-17 Oiva A. Paavola Blood pressure measuring apparatus and method
US4086916A (en) * 1975-09-19 1978-05-02 Joseph J. Cayre Cardiac monitor wristwatch
US4090504A (en) * 1976-06-21 1978-05-23 Yehuda Nathan Portable temperature and pulse monitor
US4091803A (en) * 1975-02-17 1978-05-30 Thomas Orr Transducers
US4096854A (en) * 1976-03-01 1978-06-27 Jacob E. Perica Cardiac monitor with rate limit means
US4116228A (en) * 1975-10-31 1978-09-26 United States Surgical Corporation Respiration data acquisition, conversion and display system
US4120296A (en) * 1975-06-04 1978-10-17 Heuer-Leonidas S.A. Pulsimeter
US4120294A (en) * 1976-08-26 1978-10-17 Wolfe Donna L Electrode system for acquiring electrical signals from the heart
US4129124A (en) * 1976-03-23 1978-12-12 Elektro-Apparatebau Olten A.G. Pulse-rate indicator
US4129125A (en) * 1976-12-27 1978-12-12 Camin Research Corp. Patient monitoring system
FR2399230A1 (en) * 1975-03-14 1979-03-02 Hardy Frank Indicator Pulse
US4163447A (en) * 1977-02-11 1979-08-07 Thomas Orr Heartbeat rate monitor
US4180062A (en) * 1978-04-10 1979-12-25 James Alberti Portable childbirth chair with electronic monitoring apparatus
US4185621A (en) * 1977-10-28 1980-01-29 Triad, Inc. Body parameter display incorporating a battery charger
WO1980000912A1 (en) * 1978-11-09 1980-05-15 Sigalos J Wrist-type pulse monitor
US4224948A (en) * 1978-11-24 1980-09-30 Cramer Frank B Wrist borne pulse meter/chronometer
US4256117A (en) * 1976-03-01 1981-03-17 Jacob E. Perica Cardiac monitor with stop watch means
US4270547A (en) * 1978-10-03 1981-06-02 University Patents, Inc. Vital signs monitoring system
US4331154A (en) * 1979-10-15 1982-05-25 Tech Engineering & Design Blood pressure and heart rate measuring watch
US4353375A (en) * 1977-04-26 1982-10-12 The United States Of America As Represented By The Department Of Health & Human Services Activity monitor for ambulatory subjects
US4375219A (en) * 1980-02-05 1983-03-01 Walter Schmid Electrode for detecting bioelectrical signals
US4469107A (en) * 1979-01-02 1984-09-04 Asmar Raymond A Automatic blood pressure measurement device with threshold compensation circuitry and method for performing the same
EP0165505A1 (en) * 1984-05-24 1985-12-27 Walter A. Maier Device for the continuous measurement of the human heart pulse
EP0209351A1 (en) * 1985-07-15 1987-01-21 Progress Equities Incorporated Electronic timepiece having a radiation dose rate meter
US4830014A (en) * 1983-05-11 1989-05-16 Nellcor Incorporated Sensor having cutaneous conformance
DE4139709A1 (en) * 1991-04-16 1992-10-22 Colin Electronics Pulswellenfuehler
US5197489A (en) * 1991-06-17 1993-03-30 Precision Control Design, Inc. Activity monitoring apparatus with configurable filters
US5738104A (en) * 1995-11-08 1998-04-14 Salutron, Inc. EKG based heart rate monitor
US5817008A (en) * 1996-10-31 1998-10-06 Spacelabs Medical, Inc. Conformal pulse oximetry sensor and monitor
USRE36000E (en) * 1990-10-19 1998-12-22 Nellcor Puritan Bennett Incorporated Adhesive pulse oximeter sensor with reusable portion
US5891021A (en) * 1998-06-03 1999-04-06 Perdue Holdings, Inc. Partially rigid-partially flexible electro-optical sensor for fingertip transillumination
US6160480A (en) * 1999-09-24 2000-12-12 Su-Yueh; Hsien Huang Wireless inline-skate and skate board pulse watch with speed and heart rate monitoring
US6491647B1 (en) 1998-09-23 2002-12-10 Active Signal Technologies, Inc. Physiological sensing device
WO2003050643A2 (en) 2001-12-10 2003-06-19 Medic4All Ag Method and device for measuring physiological parameters at the wrist
US20030163287A1 (en) * 2000-12-15 2003-08-28 Vock Curtis A. Movement and event systems and associated methods related applications
US6622034B1 (en) 1999-09-10 2003-09-16 Imagenix, Inc. Oximeter sensor with functional liner
US20070129220A1 (en) * 2005-12-06 2007-06-07 Ilir Bardha Jump rope with physiological monitor
US20070208530A1 (en) * 1994-11-21 2007-09-06 Vock Curtis A Activity monitoring systems & methods
US20070270721A1 (en) * 2006-05-22 2007-11-22 Apple Computer, Inc. Calibration techniques for activity sensing devices
US20070270663A1 (en) * 2006-05-22 2007-11-22 Apple Computer, Inc. System including portable media player and physiologic data gathering device
US20070271065A1 (en) * 2006-05-22 2007-11-22 Apple Computer, Inc. Portable media device with workout support
US20080076989A1 (en) * 2006-09-21 2008-03-27 Starr Life Sciences Corp. Tail Mounting Clip for Securely Mounting Sensor to Tail and a Tail Mounted Pulse Oximetry Sensor System Using Same
US20080167564A1 (en) * 2007-01-10 2008-07-10 Starr Life Sciences Corp. Techniques for accurately deriving physiologic parameters of a subject from photoplethysmographic measurements
US20080168951A1 (en) * 2007-01-11 2008-07-17 Starr Life Sciences Corp. Small animal restraining device with physiologic sensor mount
US20080194932A1 (en) * 2006-09-21 2008-08-14 Starr Life Sciences Corp. Small Animal Pulse Oximeter User Interface
US20080262326A1 (en) * 2007-04-19 2008-10-23 Starr Life Sciences Corp. Signal Processing Method and Apparatus for Processing a Physiologic Signal such as a Photoplethysmography Signal
US20080306707A1 (en) * 1994-11-21 2008-12-11 Vock Curtis A Impact Reporting Head Gear System And Method
US20090099425A1 (en) * 2007-10-10 2009-04-16 Starr Life Sciences Corp. Integrated tail mounted blood pressure monitor and pulse oximeter system for animal research
US20090223460A1 (en) * 2008-03-10 2009-09-10 Starr Life Sciences Corp. Bioactive gas supply chamber for animal research such as hypoxia studies on non-anesthetized small animals with direct physiologic monitoring
US20090267783A1 (en) * 2005-10-18 2009-10-29 Apple Inc. Shoe Wear-Out Sensor, Body-Bar Sensing System, Unitless Activity Assessment and Associated Methods
US7698101B2 (en) 2007-03-07 2010-04-13 Apple Inc. Smart garment
US7813715B2 (en) 2006-08-30 2010-10-12 Apple Inc. Automated pairing of wireless accessories with host devices
US7856339B2 (en) 2000-12-15 2010-12-21 Phatrat Technology, Llc Product integrity tracking shipping label, system and associated method
US7913297B2 (en) 2006-08-30 2011-03-22 Apple Inc. Pairing of wireless devices using a wired medium
US8005624B1 (en) 2004-04-26 2011-08-23 Starr Life Sciences Corp. Medical devices and techniques for rodent and small mammalian based research
US8073984B2 (en) 2006-05-22 2011-12-06 Apple Inc. Communication protocol for use with portable electronic devices
US9868041B2 (en) 2006-05-22 2018-01-16 Apple, Inc. Integrated media jukebox and physiologic data handling application

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4101071A (en) * 1977-04-04 1978-07-18 Carl Brejnik Electronic calorie counter
FR2469908A1 (en) * 1979-11-19 1981-05-29 Attuil Gerard Blood pressure and pulse monitoring bracelet - has pneumatic sac applying pressure via piston to move pointer around circular scale
US4409983A (en) * 1981-08-20 1983-10-18 Albert David E Pulse measuring device
GB8326532D0 (en) * 1983-07-15 1983-11-02 Lam P Y T Pulsimeter
JPS6240573U (en) * 1985-08-28 1987-03-11

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294988A (en) * 1964-09-24 1966-12-27 Hewlett Packard Co Transducers
US3384075A (en) * 1965-10-01 1968-05-21 Nasa Usa Digital cardiotachometer system
US3535067A (en) * 1967-03-07 1970-10-20 Electro O Mech Inc Blood pressure and pulse indicator
US3541779A (en) * 1968-03-19 1970-11-24 Corning Glass Works Electronic timepiece
US3616638A (en) * 1970-03-19 1971-11-02 Bulova Watch Co Inc Crystal-controlled mechanical resonator
US3616639A (en) * 1967-10-26 1971-11-02 Glacier Metal Co Ltd Pulse generator
US3665697A (en) * 1969-11-20 1972-05-30 Suisse Pour L Ind Horlogere Sa Driving mechanism for electronically controlled timepiece

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2756741A (en) * 1954-04-29 1956-07-31 Rca Corp Apparatus for obtaining systolic information
DE1109314B (en) * 1960-02-10 1961-06-22 Wolfgang Rentsch Circulatory Kontrollgeraet
FR1370661A (en) * 1963-06-17 1964-08-28 heart condition warning electronic device
DE1466925C3 (en) * 1964-06-19 1975-10-30 Thiokol Chemical Corp., Bristol, Pa. (V.St.A.)
FR1590065A (en) * 1965-10-08 1970-04-13
DE1812816A1 (en) * 1968-12-05 1970-06-18 Bbc Brown Boveri & Cie Arrangement for monitoring the pulse

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3294988A (en) * 1964-09-24 1966-12-27 Hewlett Packard Co Transducers
US3384075A (en) * 1965-10-01 1968-05-21 Nasa Usa Digital cardiotachometer system
US3535067A (en) * 1967-03-07 1970-10-20 Electro O Mech Inc Blood pressure and pulse indicator
US3616639A (en) * 1967-10-26 1971-11-02 Glacier Metal Co Ltd Pulse generator
US3541779A (en) * 1968-03-19 1970-11-24 Corning Glass Works Electronic timepiece
US3665697A (en) * 1969-11-20 1972-05-30 Suisse Pour L Ind Horlogere Sa Driving mechanism for electronically controlled timepiece
US3616638A (en) * 1970-03-19 1971-11-02 Bulova Watch Co Inc Crystal-controlled mechanical resonator

Cited By (116)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4022192A (en) * 1974-10-21 1977-05-10 Laukien Gunther R Apparatus for measuring the frequency of cardiac pulses
US4091803A (en) * 1975-02-17 1978-05-30 Thomas Orr Transducers
US4068654A (en) * 1975-02-19 1978-01-17 Oiva A. Paavola Blood pressure measuring apparatus and method
FR2399230A1 (en) * 1975-03-14 1979-03-02 Hardy Frank Indicator Pulse
US4009708A (en) * 1975-05-29 1977-03-01 Fay Jr John J Pulse rate recorder
US4120296A (en) * 1975-06-04 1978-10-17 Heuer-Leonidas S.A. Pulsimeter
US4086916A (en) * 1975-09-19 1978-05-02 Joseph J. Cayre Cardiac monitor wristwatch
US4116228A (en) * 1975-10-31 1978-09-26 United States Surgical Corporation Respiration data acquisition, conversion and display system
US4125111A (en) * 1975-10-31 1978-11-14 United States Surgical Corporation Heartbeat data acquisition conversion and display system
US4096854A (en) * 1976-03-01 1978-06-27 Jacob E. Perica Cardiac monitor with rate limit means
US4063410A (en) * 1976-03-01 1977-12-20 Welling Gregory J Digital watch including a signal transmitter
US4256117A (en) * 1976-03-01 1981-03-17 Jacob E. Perica Cardiac monitor with stop watch means
US4058118A (en) * 1976-03-19 1977-11-15 Bunker Ramo Corporation Pulse counter
US4129124A (en) * 1976-03-23 1978-12-12 Elektro-Apparatebau Olten A.G. Pulse-rate indicator
US4090504A (en) * 1976-06-21 1978-05-23 Yehuda Nathan Portable temperature and pulse monitor
US4120294A (en) * 1976-08-26 1978-10-17 Wolfe Donna L Electrode system for acquiring electrical signals from the heart
US4129125A (en) * 1976-12-27 1978-12-12 Camin Research Corp. Patient monitoring system
US4163447A (en) * 1977-02-11 1979-08-07 Thomas Orr Heartbeat rate monitor
US4353375A (en) * 1977-04-26 1982-10-12 The United States Of America As Represented By The Department Of Health & Human Services Activity monitor for ambulatory subjects
US4185621A (en) * 1977-10-28 1980-01-29 Triad, Inc. Body parameter display incorporating a battery charger
WO1980000655A1 (en) * 1978-04-10 1980-04-17 J Alberti Portable childbirth chair
US4180062A (en) * 1978-04-10 1979-12-25 James Alberti Portable childbirth chair with electronic monitoring apparatus
US4270547A (en) * 1978-10-03 1981-06-02 University Patents, Inc. Vital signs monitoring system
WO1980000912A1 (en) * 1978-11-09 1980-05-15 Sigalos J Wrist-type pulse monitor
US4224948A (en) * 1978-11-24 1980-09-30 Cramer Frank B Wrist borne pulse meter/chronometer
US4469107A (en) * 1979-01-02 1984-09-04 Asmar Raymond A Automatic blood pressure measurement device with threshold compensation circuitry and method for performing the same
US4331154A (en) * 1979-10-15 1982-05-25 Tech Engineering & Design Blood pressure and heart rate measuring watch
US4375219A (en) * 1980-02-05 1983-03-01 Walter Schmid Electrode for detecting bioelectrical signals
US4830014A (en) * 1983-05-11 1989-05-16 Nellcor Incorporated Sensor having cutaneous conformance
EP0165505A1 (en) * 1984-05-24 1985-12-27 Walter A. Maier Device for the continuous measurement of the human heart pulse
EP0209351A1 (en) * 1985-07-15 1987-01-21 Progress Equities Incorporated Electronic timepiece having a radiation dose rate meter
USRE36000E (en) * 1990-10-19 1998-12-22 Nellcor Puritan Bennett Incorporated Adhesive pulse oximeter sensor with reusable portion
DE4139709A1 (en) * 1991-04-16 1992-10-22 Colin Electronics Pulswellenfuehler
US5197489A (en) * 1991-06-17 1993-03-30 Precision Control Design, Inc. Activity monitoring apparatus with configurable filters
US5573013A (en) * 1991-06-17 1996-11-12 Precision Control Design, Inc. Method of monitoring body movements using activity monitoring apparatus
US7640135B2 (en) 1994-11-21 2009-12-29 Phatrat Technology, Llc System and method for determining airtime using free fall
US7991565B2 (en) 1994-11-21 2011-08-02 Phatrat Technology, Llc System and method for non-wirelessly determining free-fall of a moving sportsman
US20110060550A1 (en) * 1994-11-21 2011-03-10 Vock Curtis A System And Method For Non-Wirelessly Determining Free-Fall Of A Moving Sportsman
US7693668B2 (en) 1994-11-21 2010-04-06 Phatrat Technology, Llc Impact reporting head gear system and method
US8036851B2 (en) 1994-11-21 2011-10-11 Apple Inc. Activity monitoring systems and methods
US7860666B2 (en) 1994-11-21 2010-12-28 Phatrat Technology, Llc Systems and methods for determining drop distance and speed of moving sportsmen involved in board sports
US20090150114A1 (en) * 1994-11-21 2009-06-11 Apple Inc. Activity monitoring systems and methods
US8239146B2 (en) 1994-11-21 2012-08-07 PhatRat Technology, LLP Board sports sensing devices, and associated methods
US7512515B2 (en) 1994-11-21 2009-03-31 Apple Inc. Activity monitoring systems and methods
US20080306707A1 (en) * 1994-11-21 2008-12-11 Vock Curtis A Impact Reporting Head Gear System And Method
US7451056B2 (en) 1994-11-21 2008-11-11 Phatrat Technology, Llc Activity monitoring systems and methods
US20070208530A1 (en) * 1994-11-21 2007-09-06 Vock Curtis A Activity monitoring systems & methods
US8620600B2 (en) 1994-11-21 2013-12-31 Phatrat Technology, Llc System for assessing and displaying activity of a sportsman
US8352211B2 (en) 1994-11-21 2013-01-08 Apple Inc. Activity monitoring systems and methods
US5876350A (en) * 1995-11-08 1999-03-02 Salutron, Inc. EKG based heart rate monitor with digital filter and enhancement signal processor
US5738104A (en) * 1995-11-08 1998-04-14 Salutron, Inc. EKG based heart rate monitor
US5817008A (en) * 1996-10-31 1998-10-06 Spacelabs Medical, Inc. Conformal pulse oximetry sensor and monitor
US5891021A (en) * 1998-06-03 1999-04-06 Perdue Holdings, Inc. Partially rigid-partially flexible electro-optical sensor for fingertip transillumination
US6491647B1 (en) 1998-09-23 2002-12-10 Active Signal Technologies, Inc. Physiological sensing device
US6622034B1 (en) 1999-09-10 2003-09-16 Imagenix, Inc. Oximeter sensor with functional liner
US6160480A (en) * 1999-09-24 2000-12-12 Su-Yueh; Hsien Huang Wireless inline-skate and skate board pulse watch with speed and heart rate monitoring
US8374825B2 (en) 2000-12-15 2013-02-12 Apple Inc. Personal items network, and associated methods
US8280681B2 (en) 2000-12-15 2012-10-02 Phatrat Technology, Llc Pressure-based weight monitoring system for determining improper walking or running
US20070111753A1 (en) * 2000-12-15 2007-05-17 Vock Curtis A Personal items network, and associated methods
US8280682B2 (en) 2000-12-15 2012-10-02 Tvipr, Llc Device for monitoring movement of shipped goods
US7174277B2 (en) 2000-12-15 2007-02-06 Phatrat Technology Llc Product integrity systems and associated methods
US20050080566A1 (en) * 2000-12-15 2005-04-14 Vock Curtis A. Product integrity systems and associated methods
US8396687B2 (en) 2000-12-15 2013-03-12 Phatrat Technology, Llc Machine logic airtime sensor for board sports
US20030163287A1 (en) * 2000-12-15 2003-08-28 Vock Curtis A. Movement and event systems and associated methods related applications
US9643091B2 (en) 2000-12-15 2017-05-09 Apple Inc. Personal items network, and associated methods
US8428904B2 (en) 2000-12-15 2013-04-23 Tvipr, Llc Product integrity tracking system, shipping label, and associated method
US20090212941A1 (en) * 2000-12-15 2009-08-27 Apple Inc. Personal items network, and associated methods
US8126675B2 (en) 2000-12-15 2012-02-28 Phatrat Technology, Llc Product integrity tracking shipping label, and associated method
US7552031B2 (en) 2000-12-15 2009-06-23 Apple Inc. Personal items network, and associated methods
US7627451B2 (en) 2000-12-15 2009-12-01 Apple Inc. Movement and event systems and associated methods
US9267793B2 (en) 2000-12-15 2016-02-23 Tvipr, Llc Movement monitoring device for attachment to equipment
US8660814B2 (en) 2000-12-15 2014-02-25 Tvipr, Llc Package management system for tracking shipment and product integrity
US8688406B2 (en) 2000-12-15 2014-04-01 Apple Inc. Personal items network, and associated methods
US7856339B2 (en) 2000-12-15 2010-12-21 Phatrat Technology, Llc Product integrity tracking shipping label, system and associated method
US20070208542A1 (en) * 2000-12-15 2007-09-06 Vock Curtis A Movement and event systems and associated methods
US20100076692A1 (en) * 2000-12-15 2010-03-25 Vock Curtis A Movement And Event Systems And Associated Methods
US10080971B2 (en) 2000-12-15 2018-09-25 Apple Inc. Personal items network, and associated methods
EP2361555A2 (en) 2001-12-10 2011-08-31 Medic4all AG Method and device for measuring physiological parameters at the wrist
EP2361550A2 (en) 2001-12-10 2011-08-31 Medic4all AG Method and device for measuring physiological parameters at the wrist
WO2003050643A2 (en) 2001-12-10 2003-06-19 Medic4All Ag Method and device for measuring physiological parameters at the wrist
US8005624B1 (en) 2004-04-26 2011-08-23 Starr Life Sciences Corp. Medical devices and techniques for rodent and small mammalian based research
US9578927B2 (en) 2005-10-18 2017-02-28 Apple Inc. Shoe wear-out sensor, body-bar sensing system, unitless activity assessment and associated methods
US20110140890A1 (en) * 2005-10-18 2011-06-16 Apple Inc. Shoe wear-out sensor, body-bar sensing system, unitless activity assessment and associated methods
US8217788B2 (en) 2005-10-18 2012-07-10 Vock Curtis A Shoe wear-out sensor, body-bar sensing system, unitless activity assessment and associated methods
US7911339B2 (en) 2005-10-18 2011-03-22 Apple Inc. Shoe wear-out sensor, body-bar sensing system, unitless activity assessment and associated methods
US8749380B2 (en) 2005-10-18 2014-06-10 Apple Inc. Shoe wear-out sensor, body-bar sensing system, unitless activity assessment and associated methods
US9968158B2 (en) 2005-10-18 2018-05-15 Apple Inc. Shoe wear-out sensor, body-bar sensing system, unitless activity assessment and associated methods
US20090267783A1 (en) * 2005-10-18 2009-10-29 Apple Inc. Shoe Wear-Out Sensor, Body-Bar Sensing System, Unitless Activity Assessment and Associated Methods
US20070129220A1 (en) * 2005-12-06 2007-06-07 Ilir Bardha Jump rope with physiological monitor
US7354383B2 (en) 2005-12-06 2008-04-08 Ilir Bardha Jump rope with physiological monitor
US8060229B2 (en) 2006-05-22 2011-11-15 Apple Inc. Portable media device with workout support
US8073984B2 (en) 2006-05-22 2011-12-06 Apple Inc. Communication protocol for use with portable electronic devices
US20070270721A1 (en) * 2006-05-22 2007-11-22 Apple Computer, Inc. Calibration techniques for activity sensing devices
US8346987B2 (en) 2006-05-22 2013-01-01 Apple Inc. Communication protocol for use with portable electronic devices
US7643895B2 (en) 2006-05-22 2010-01-05 Apple Inc. Portable media device with workout support
US9154554B2 (en) 2006-05-22 2015-10-06 Apple Inc. Calibration techniques for activity sensing devices
US20070270663A1 (en) * 2006-05-22 2007-11-22 Apple Computer, Inc. System including portable media player and physiologic data gathering device
US9137309B2 (en) 2006-05-22 2015-09-15 Apple Inc. Calibration techniques for activity sensing devices
US9868041B2 (en) 2006-05-22 2018-01-16 Apple, Inc. Integrated media jukebox and physiologic data handling application
US20070271065A1 (en) * 2006-05-22 2007-11-22 Apple Computer, Inc. Portable media device with workout support
US8181233B2 (en) 2006-08-30 2012-05-15 Apple Inc. Pairing of wireless devices using a wired medium
US20110214168A1 (en) * 2006-08-30 2011-09-01 Jeremy Wyld Pairing of wireless devices using a wired medium
US7913297B2 (en) 2006-08-30 2011-03-22 Apple Inc. Pairing of wireless devices using a wired medium
US7813715B2 (en) 2006-08-30 2010-10-12 Apple Inc. Automated pairing of wireless accessories with host devices
US20080076989A1 (en) * 2006-09-21 2008-03-27 Starr Life Sciences Corp. Tail Mounting Clip for Securely Mounting Sensor to Tail and a Tail Mounted Pulse Oximetry Sensor System Using Same
US20080194932A1 (en) * 2006-09-21 2008-08-14 Starr Life Sciences Corp. Small Animal Pulse Oximeter User Interface
US20080167564A1 (en) * 2007-01-10 2008-07-10 Starr Life Sciences Corp. Techniques for accurately deriving physiologic parameters of a subject from photoplethysmographic measurements
US8298154B2 (en) 2007-01-10 2012-10-30 Starr Life Sciences Corporation Techniques for accurately deriving physiologic parameters of a subject from photoplethysmographic measurements
US20080168948A1 (en) * 2007-01-11 2008-07-17 Starr Life Sciences Corp. Small animal restraining device with non-traumatic animal loading device
US20080168951A1 (en) * 2007-01-11 2008-07-17 Starr Life Sciences Corp. Small animal restraining device with physiologic sensor mount
US8099258B2 (en) 2007-03-07 2012-01-17 Apple Inc. Smart garment
US7698101B2 (en) 2007-03-07 2010-04-13 Apple Inc. Smart garment
US20080262326A1 (en) * 2007-04-19 2008-10-23 Starr Life Sciences Corp. Signal Processing Method and Apparatus for Processing a Physiologic Signal such as a Photoplethysmography Signal
US7857768B2 (en) 2007-10-10 2010-12-28 Starr Life Sciences Corporation Integrated tail mounted blood pressure monitor and pulse oximeter system for animal research
US20090099425A1 (en) * 2007-10-10 2009-04-16 Starr Life Sciences Corp. Integrated tail mounted blood pressure monitor and pulse oximeter system for animal research
US20090223460A1 (en) * 2008-03-10 2009-09-10 Starr Life Sciences Corp. Bioactive gas supply chamber for animal research such as hypoxia studies on non-anesthetized small animals with direct physiologic monitoring

Also Published As

Publication number Publication date Type
DE2142095B2 (en) 1980-05-29 application
NL165370B (en) 1980-11-17 application
JPS5934370B1 (en) 1984-08-22 grant
NL7112008A (en) 1972-04-04 application
DE2142095A1 (en) 1972-03-30 application
NL165370C (en) 1981-04-15 grant
DE2142095C3 (en) 1987-10-22 grant
FR2106237A5 (en) 1972-04-28 application
GB1312107A (en) 1973-04-04 application

Similar Documents

Publication Publication Date Title
US3535067A (en) Blood pressure and pulse indicator
US4451158A (en) Countdown timer
US3858574A (en) Pulse rate and amplitude monitor
US4277980A (en) Apparatus and method for indicating sound levels
US4148304A (en) Device for measuring ovulation
US4711244A (en) Digital moisture dermatometer
US4312358A (en) Instrument for measuring and computing heart beat, body temperature and other physiological and exercise-related parameters
US5622180A (en) Device for measuring heartbeat rate
US3834153A (en) Electronic timepiece with a multi-timer
US3967690A (en) Digital readout diet scale
US4769547A (en) Personal dosimeter having a volume of gas atop an integrated circuit
US5459676A (en) Self contained dual inclinometer system
US3878496A (en) Selectable level alarming personal dosimeter
US4338950A (en) System and method for sensing and measuring heart beat
US4525074A (en) Apparatus for measuring the quantity of physical exercise
US4305401A (en) Digital watch/infrared plethysmograph having a quick release remote pulse sensor having a finger cuff
US4510704A (en) Boot or shoe incorporating pedometer or the like
US4484076A (en) Direct reading dosimeter
US4869262A (en) Device for displaying blood pressure
US4163447A (en) Heartbeat rate monitor
US4112926A (en) Method and apparatus for measuring and treating hyperactivity in human beings
US4101071A (en) Electronic calorie counter
US4757453A (en) Body activity monitor using piezoelectric transducers on arms and legs
US5216599A (en) Method of processing data for determining the time of ovulation in an animal
US4475558A (en) System for providing short-term event data and long-term trend data