USB321018I5 - - Google Patents
Info
- Publication number
- USB321018I5 USB321018I5 US32101873A USB321018I5 US B321018 I5 USB321018 I5 US B321018I5 US 32101873 A US32101873 A US 32101873A US B321018 I5 USB321018 I5 US B321018I5
- Authority
- US
- United States
- 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
Links
Classifications
-
- 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
- A61B5/02416—Detecting, measuring or recording pulse rate or heart rate using photoplethysmograph signals, e.g. generated by infrared radiation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
- A61B5/7235—Details of waveform analysis
- A61B5/7239—Details of waveform analysis using differentiation including higher order derivatives
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US321018A US3921623A (en) | 1973-01-04 | 1973-01-04 | Heart beating examining apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US321018A US3921623A (en) | 1973-01-04 | 1973-01-04 | Heart beating examining apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| USB321018I5 true USB321018I5 (en) | 1975-01-28 |
| US3921623A US3921623A (en) | 1975-11-25 |
Family
ID=23248819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US321018A Expired - Lifetime US3921623A (en) | 1973-01-04 | 1973-01-04 | Heart beating examining apparatus |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US3921623A (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4628939A (en) * | 1980-09-11 | 1986-12-16 | Hughes Aircraft Company | Method and improved apparatus for analyzing heart activity |
| US4428380A (en) | 1980-09-11 | 1984-01-31 | Hughes Aircraft Company | Method and improved apparatus for analyzing activity |
| US4446873A (en) * | 1981-03-06 | 1984-05-08 | Siemens Gammasonics, Inc. | Method and apparatus for detecting heart sounds |
| US4672977A (en) * | 1986-06-10 | 1987-06-16 | Cherne Industries, Inc. | Lung sound cancellation method and apparatus |
| DE3744605C1 (en) * | 1987-12-31 | 1989-04-27 | Jochen Dipl-Ing Heimann | Sensor |
| US4972841A (en) * | 1988-11-14 | 1990-11-27 | Iguchi Robert K | Stethoscope with pulse rate display |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3030946A (en) * | 1962-04-24 | amplifier | ||
| US3132208A (en) * | 1961-06-22 | 1964-05-05 | Bell Aerospace Corp | Electronic stethoscope |
| US3139086A (en) * | 1962-04-26 | 1964-06-30 | Francis W Botsch | Human pulse rate measuring apparatus |
| US3474778A (en) * | 1967-06-05 | 1969-10-28 | Statham Instrument Inc | Pulse repetition rate determination circuit |
| USRE27042E (en) * | 1968-10-24 | 1971-01-26 | Method and apparatus for automatic screening op cardiac signals | |
| US3581735A (en) * | 1968-06-12 | 1971-06-01 | Hewlett Packard Gmbh | Heartbeat frequency determining apparatus and method |
| US3651798A (en) * | 1970-05-15 | 1972-03-28 | Parke Davis & Co | Blood pressure indicator and noise |
| US3704706A (en) * | 1969-10-23 | 1972-12-05 | Univ Drexel | Heart rate and respiratory monitor |
-
1973
- 1973-01-04 US US321018A patent/US3921623A/en not_active Expired - Lifetime
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3030946A (en) * | 1962-04-24 | amplifier | ||
| US3132208A (en) * | 1961-06-22 | 1964-05-05 | Bell Aerospace Corp | Electronic stethoscope |
| US3139086A (en) * | 1962-04-26 | 1964-06-30 | Francis W Botsch | Human pulse rate measuring apparatus |
| US3474778A (en) * | 1967-06-05 | 1969-10-28 | Statham Instrument Inc | Pulse repetition rate determination circuit |
| US3581735A (en) * | 1968-06-12 | 1971-06-01 | Hewlett Packard Gmbh | Heartbeat frequency determining apparatus and method |
| USRE27042E (en) * | 1968-10-24 | 1971-01-26 | Method and apparatus for automatic screening op cardiac signals | |
| US3704706A (en) * | 1969-10-23 | 1972-12-05 | Univ Drexel | Heart rate and respiratory monitor |
| US3651798A (en) * | 1970-05-15 | 1972-03-28 | Parke Davis & Co | Blood pressure indicator and noise |
Also Published As
| Publication number | Publication date |
|---|---|
| US3921623A (en) | 1975-11-25 |