GB1520408A - Cardiographic method - Google Patents
Cardiographic methodInfo
- Publication number
- GB1520408A GB1520408A GB5933173A GB5933173A GB1520408A GB 1520408 A GB1520408 A GB 1520408A GB 5933173 A GB5933173 A GB 5933173A GB 5933173 A GB5933173 A GB 5933173A GB 1520408 A GB1520408 A GB 1520408A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bag
- lever
- pulsations
- recording
- paper
- 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
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
-
- 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
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/022—Measuring pressure in heart or blood vessels by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Cardiology (AREA)
- Biomedical Technology (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Vascular Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Veterinary Medicine (AREA)
- Heart & Thoracic Surgery (AREA)
- Physiology (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Ophthalmology & Optometry (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
1520408 Cardiography D J ACKROYD 23 June 1975 [21 June 1974] 59331/73 Heading A5K A method of recording heartbeat comprises applying, to the region of the diaphragm of a patient I, a fluid-filled bag 2 having flexible walls, and detecting pulsations generated in the fluid by the pulse of the patient by means of a recording element responsive to the said pulsations and a progressively moving recording medium, the recording element recording on said medium a trace corresponding to the said pulsations. The pulsations may be transmitted to a further smaller fluid-filled bag 5 in communication with bag 2 and having flexible walls. The pulsations in bag 5 cause the free end of a lever 7, which is pivoted at 8 and in contact with bag 5, to move, the movements of the lever being recorded. The free end of the lever may carry a stylus which traces out a graph on a moving sheet of paper, or the paper may be impregnated with ink which is drawn to the paper surface by a metal nib on the lever. Alternatively the recording may be made by a light beam which is deflected from a mirror moving with said pulsations, onto photographic paper. Further the lever may take the form of a fibre optic element through which light is directed. In further embodiments, the recording is made by cooperation of a magnetic pointer with carbon-covered paper, or a device employing static electricity may be used. The bag 5 may be replaced by a bellows or by a dome of rubber mounted on surface 6 and communicating through tube 4 with bag 2, or by a piston and cylinder arrangement. Bags 2, 5 may be connected by one or more diaphragms or pistons instead of through tube 4. A band 3 retains the bag 2 in position and may be integral therewith. Bags 2, 5 may be of rubber or plastics. Bag 2 may have a rigid convex upper surface, and a soft flexible lower bodycontacting surface. All the components may be stored in a box of adjustable height, the lever, which may be telescopic or capable of being coiled, being detachably mounted on a hinged flap of the box.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5933173A GB1520408A (en) | 1975-06-23 | 1975-06-23 | Cardiographic method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5933173A GB1520408A (en) | 1975-06-23 | 1975-06-23 | Cardiographic method |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1520408A true GB1520408A (en) | 1978-08-09 |
Family
ID=10483558
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5933173A Expired GB1520408A (en) | 1975-06-23 | 1975-06-23 | Cardiographic method |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1520408A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2302947A (en) * | 1995-06-30 | 1997-02-05 | Talley Group Ltd | Applied pressure indicator |
-
1975
- 1975-06-23 GB GB5933173A patent/GB1520408A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2302947A (en) * | 1995-06-30 | 1997-02-05 | Talley Group Ltd | Applied pressure indicator |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |