GB1071278A - Improvements in and relating to blood warming - Google Patents
Improvements in and relating to blood warmingInfo
- Publication number
- GB1071278A GB1071278A GB4362/66A GB436266A GB1071278A GB 1071278 A GB1071278 A GB 1071278A GB 4362/66 A GB4362/66 A GB 4362/66A GB 436266 A GB436266 A GB 436266A GB 1071278 A GB1071278 A GB 1071278A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blood
- temperature
- heating
- flask
- coil
- 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
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
- A61M5/44—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media
- A61M5/445—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests having means for cooling or heating the devices or media the media being heated in the reservoir, e.g. warming bloodbags
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1919—Control of temperature characterised by the use of electric means characterised by the type of controller
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
- A61M2205/00—General characteristics of the apparatus
- A61M2205/36—General characteristics of the apparatus related to heating or cooling
- A61M2205/368—General characteristics of the apparatus related to heating or cooling by electromagnetic radiation, e.g. IR waves
- A61M2205/3686—General characteristics of the apparatus related to heating or cooling by electromagnetic radiation, e.g. IR waves microwaves
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Hematology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Vascular Medicine (AREA)
- Anesthesiology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Automation & Control Theory (AREA)
- External Artificial Organs (AREA)
Abstract
1,071,278. Electrophysical measurement. SOUTH AFRICAN INVENTIONS DEVELOPMENT CORPORATION. Feb. 1, 1966 [Feb.12, 1965], No.4362/66. Heading G1N. [Also in Division H2] Apparatus for warming blood wherein the blood is warmed by an induction heating device comprises means whereby the change of impedance of the blood due to its rise in temperature is effective to terminate the heating when the blood has reached the desired temperature. Blood 6 contained in a flask 5 is placed in a receptacle 46 wherein is situated an induction heating coil 2, the presence of the flask 5 in the receptacle 6 causing the closing of a switch in the power supply to the apparatus, which supply may be rectified alternating current. The heating coil 2 forms one arm of a bridge circuit, other arms of which comprise resistors 8-12 the resistor 10 being variable to set the desired final blood temperature. The heating coil 2 is fed by way of an oscillator including a thermionic valve or semi-conductor device 1 and variable capacitors 3, 4. As the blood 6 warms its resistance decreases thus increasing the load on the oscillator which unbalances the bridge circuit until, when the blood has reached the set temperature, the unbalance is sufficient to energize a relay coil 14 across the bridge diagonal whereby to terminate the heating, an indicator 13 registering the temperature of the blood. A short circuited turn 47 spaced from the heating coil 2 is provided around the neck of the flask 5 so as to provide a sharp definition of the magnetic field produced by the coil 2 and prevent over heating of the blood at the surface of the flask. Various safety devices and indicating lamps are provided and the preferred operating frequency of the oscillator is between 30-35 megacycles per second.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA65768 | 1965-02-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1071278A true GB1071278A (en) | 1967-06-07 |
Family
ID=25560882
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4362/66A Expired GB1071278A (en) | 1965-02-12 | 1966-02-01 | Improvements in and relating to blood warming |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1071278A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016011946A1 (en) * | 2016-08-09 | 2018-02-15 | Xenios Ag | Oxygenator with a housing wall |
-
1966
- 1966-02-01 GB GB4362/66A patent/GB1071278A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016011946A1 (en) * | 2016-08-09 | 2018-02-15 | Xenios Ag | Oxygenator with a housing wall |
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