DE494829C - Safety device on high-frequency medical devices with radio interference protection - Google Patents
Safety device on high-frequency medical devices with radio interference protectionInfo
- Publication number
- DE494829C DE494829C DEJ35048D DEJ0035048D DE494829C DE 494829 C DE494829 C DE 494829C DE J35048 D DEJ35048 D DE J35048D DE J0035048 D DEJ0035048 D DE J0035048D DE 494829 C DE494829 C DE 494829C
- Authority
- DE
- Germany
- Prior art keywords
- safety device
- radio interference
- capacitor
- interference protection
- medical devices
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
- H04B15/02—Reducing interference from electric apparatus by means located at or near the interfering apparatus
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Electrotherapy Devices (AREA)
- Magnetic Treatment Devices (AREA)
Description
Sicherheitsvorrichtung an Hochfrequenz-Heilgeräten mit einem Rundfunkstörschutz Bei Hochfrequenzgeräten, welche mit Vorrichtung zur Verhinderung von Rundfunkstörungen ausgerüstet sind, wird, um eine wirksame Störbefreiung zu erzielen, eine Metallelektrode oder ein metallumkleideter Handgriff von der sich behandelnden Person umfaßt werden. Diese Elektrode oder Handgriff steht im allgemeinen über einen Kondensator mit der Anschlußleitung in Verbindung. Bei Durchschlag des Kondensators erhält der Handgriff Netzspannung, und die sich behandelnde Person ist gefährdet.Safety device on high-frequency healing devices with radio interference protection In the case of high-frequency devices that have a device to prevent radio interference are equipped, in order to achieve effective interference elimination, a metal electrode or a metal-clad handle can be grasped by the treating person. This electrode or handle is generally connected to the capacitor via a capacitor Connection line in connection. If the capacitor breaks down, the handle is retained Mains voltage, and the treating person is at risk.
Die vorliegende Konstruktion vermeidet diesen Übelstand dadurch, daß in die Leitung vom Blockierungskondensator zur zweiten Elektrode oder zum Handgriff die Wicklung eines Relais gelegt wird, welches dann anspricht, sowie ein Durchschlag des Schutzkondensators erfolgt, und automatisch die Speiseleitungen kurzschließt.The present construction avoids this drawback in that into the line from the blocking capacitor to the second electrode or to the handle the winding of a relay is placed, which then responds, as well as a breakdown of the protective capacitor takes place and automatically short-circuits the feed lines.
Die Abbildung zeigt schematisch diese Vorrichtung, und zwar bei Verwendung eines Mehrfach-Schutzkondensators; die Verwendung bei einfachen Schutzkondensatoren ist analog. Buchstabe c, und b bezeichnen die beiden Speiseleitungen des Apparates. c ist ein Dreifach-Schutzkondensator, welcher mit seinen beiden äußeren Belegungen an die Leitungen a und b angeschlossen ist. Die mittlere Belegung führt über die Leitung d zur erfindungsgemäßen Schutzvorrichtung e und von da zur Hilfselektrode f. Die Schutzvorrichtung e ist ihrerseits durch die Leitungen g und la mit den beiden Speiseleitungen a und b verbunden. Erfolgt jetzt ein Erdschluß dadurch, daß der Kondensator c von a nach d durchschlägt, so fließt über die Erde, den Körper des sich mit dem Apparat Behandelnden, über f, d und die Schutzeinrichtung e Netzstrom, welcher das Relais e zum Ansprechen bringt und nun die beiden Leitungen a und b über die Zuleitungen h und g kurzschließt. Die Kurzschließung erfolgt durch die beiden Anker i und lt. Durch den Kurzschluß der Netzleitungen werden die .im Netz stets vorhandenen Sicherungen zum Durchbrennen gebracht, so "daß eine Gefährdung der Person, welche die Hilfselektrode f umklammert, vermieden wird.The figure shows this device schematically, with the use of a multiple protective capacitor; the use of simple protective capacitors is analogous. Letters c and b designate the two feed lines of the apparatus. c is a triple protective capacitor, which is connected with its two outer assignments to lines a and b. The middle occupancy leads via the line d to the protective device e according to the invention and from there to the auxiliary electrode f. The protective device e is in turn connected by the lines g and la to the two feed lines a and b . If an earth fault now occurs because the capacitor c breaks down from a to d , then mains current flows through the earth, the body of the person using the device, through f, d and the protective device e, which causes the relay e to respond and now short-circuits the two lines a and b via the supply lines h and g. The short-circuit is carried out by the two armatures i and lt. The short-circuit of the power lines causes the fuses that are always present in the network to burn out, so that endangering the person clasping the auxiliary electrode f is avoided.
Um den hochfrequenten Strom vom Relais fernzuhalten, wird die Magnetspule mit einem Kondensator überbrückt.To keep the high-frequency current away from the relay, the solenoid is used bridged with a capacitor.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ35048D DE494829C (en) | Safety device on high-frequency medical devices with radio interference protection |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEJ35048D DE494829C (en) | Safety device on high-frequency medical devices with radio interference protection |
Publications (1)
Publication Number | Publication Date |
---|---|
DE494829C true DE494829C (en) | 1930-03-27 |
Family
ID=7205288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEJ35048D Expired DE494829C (en) | Safety device on high-frequency medical devices with radio interference protection |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE494829C (en) |
-
0
- DE DEJ35048D patent/DE494829C/en not_active Expired
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