DE379130C - Device for picking up the weak electrical currents generated by the heartbeat - Google Patents

Device for picking up the weak electrical currents generated by the heartbeat

Info

Publication number
DE379130C
DE379130C DEG57035D DEG0057035D DE379130C DE 379130 C DE379130 C DE 379130C DE G57035 D DEG57035 D DE G57035D DE G0057035 D DEG0057035 D DE G0057035D DE 379130 C DE379130 C DE 379130C
Authority
DE
Germany
Prior art keywords
heartbeat
picking
electrical currents
currents generated
weak electrical
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
Application number
DEG57035D
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KURT GIESEMANN DR
Original Assignee
KURT GIESEMANN DR
Publication date
Priority to DEG57035D priority Critical patent/DE379130C/en
Application granted granted Critical
Publication of DE379130C publication Critical patent/DE379130C/en
Expired legal-status Critical Current

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  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Description

Vorrichtung zur Aufnahme der schwachen, beim Herzschlag entstehenden elektrischen Ströme. Vorliegen& Vorrichtung dient zur Auf- iiahnie der sehr schwachen elektrischen Ströme, die beim Herzsclilag entstehen, sich auf die Körperoherfläche fortleiten und von dort zum Aufzeichnun.gsapparat geleitet werden. Die Vorrichtung benutzt eine Glühkathoden- r(*3hre und ein Gitter in der nachstehend be- "chriebenen Weise. Bekanntlich spielt die Aufzeichnung der Stronistärke der Aktionsströme in der Be- urteilun,- von Herzkrankbeiten eine sehr große Rolle. Das bisher zu diesem Zweck ver- wendete Saitengalvatioineter von E v n t h o - v e n - E d e 1 in a ii ii ist aber ein komplizierter ,iiid teurer Apparat, dessen Bedienung mehrere Hilfskräfte und einen in diesem Fach beson- ders ausgebildeten Arzt voraussetzt. Wie bereits angegeben, führt die neue Vor- richtung als wichtigsten Bestandteil die Glüh- kathodenröllre ein, die die sehr schwach. wech- seln(len Ströme, die voni Körper abgeleitet werden, so weit verstärkt, daß sie mit den üblichen -.\leßinstrtlinenten, z. B. Milli- amperenieter, gemessen und registriert wer- den können. Die neue Vorrichtung beruht auf folgender Erwägung: Schaltet nian in einen Stromkreis mit kon- stanter Stromstärke eine Glühkathodenröhre bekannter Art, so schaltet diese den Strom aus, wenn ihre Kathode ilicht glüht. Bringt man aber die Kathode durch einen Hilfsstrom zum Glühen, so sendet sie einen Stroin negativer Elektronen aus. Die positiv geladene Anode zieht die negativen Elektronen all. Es ent- stellt ein Strom, der sogenannte Anodenstrorn. Um zur Anode züi gelangen, i-iiüssen die Elek- tronen das Gitter passieren. Wird null das Gitter ne,#ati#- -eIaden, so stößt es einen Teil Jer von der Kathode ausströmenden Elek- tronen ab und schwächt dadurch den Anoden- stroin. Wird das Gitter positiv geladen, so zieht es die Elektronen an. Es verstärkt den Ano(lenstrom, und zwar genügen winzige Potentialschwankungen im Gitter, uni im Anodenstrom Schwankungen hervorzubringen-, die man an den üblichen Zeigerinstrunienten ablesen kann. Das Schaltscheina ist auf (-ler Zeichnung dargestellt. k' Von dem Körper a -, z. B. den beiden Arinen des Kranken, geht das eine Kabel b zu dein Gitter c, das andere Kabel d zur Kathode der Glühkathodenröhre e. Die Kathode wird durch (las Element f zum Glühen gebracht. Die Stärke des Stromes läßt sich durch rlen Wider- stand g regulieren. Die Stromquelle h liefert den Anodenstrom, der durch den Widerstand i reguliert wird. Das Zeigerinstrument k läßt sich als Registrierapparat ausbauen. Es zeich- riet die Stromschwankungen auf, die im Anodenstrorn durch die verschieden hohen Gitterladungen hervorgerufen werden. Bei der neuen Vorrichtung fällt gerade (las fort, was die Vorrichtung von E v ii t h o v e n - E d e 1 ni a n n so subtil machte, nämlich die Saite, die Bogenlampe, die Linsensysteme und die photographische Aufnahme. An ihre Stelle tritt eine maschinenmäßig zuverlässige Vor- richtung, an der besonders feine Einstell- und Reguliervorrichtungen nicht zu bedienen sind und dalier stets aufnahmebereit ist. Device for absorbing the weak electrical currents generated by the heartbeat. Present & device is used for iiahnie of very weak electric currents, that arise with the heart clilag, focus on the Forward the upper body surface and from there to the Recording apparatus. The device uses a hot cathode r (* 3hre and a grid in the "written way. As is well known, the recording of the Stronist strength of the action streams in the judgment, - of heart disease work a very great one Role. The previously used for this purpose turned string galvatioineter by E vntho - ven - E d e 1 in a ii ii is a complicated one , iiid an expensive apparatus, the operation of which is several Assistants and a specialist in this subject requires a trained doctor. As stated earlier, the new demonstration direction as the most important component is the annealing cathode roller one which the very weak. interchangeable seln (len currents derived fromi bodies are reinforced to the point that they are with the usual -. \ lessinstrtlinenten, z. B. Milli- amperenieter, measured and registered the can. The new device is based on the following Consideration: Switches nian into a circuit with con- constant current strength a hot cathode tube known type, so this turns off the power, when its cathode is glowing. One brings but the cathode through an auxiliary current to the Glow so it sends a stroin more negative Electrons off. The positively charged anode pulls the negative electrons all. provides a current, the so-called anode current. To get to the anode, the elec- tronen pass through the grille. Will be null that Grid ne, # ati # - -eIaden, it pushes a part The elec- trons and thereby weakens the anode stroin. If the grid is positively charged, so it attracts the electrons. It reinforces that Ano (lenstrom, tiny ones are enough Potential fluctuations in the grid, uni im To produce fluctuations in anode current, which one on the usual pointer instrument can read. The switching slip is on (-l drawing shown. k ' From the body a -, e.g. B. the two Arynes of the patient, the one cable b goes to yours Grid c, the other cable d to the cathode of the Hot cathode tube e. The cathode is through (read element f made to glow. The The strength of the current can be stand g regulate. The current source h supplies the anode current, which is caused by the resistor i is regulated. The pointer instrument k lets expand as a registration device. It draws advised the power fluctuations that im Anode current due to the different high Lattice charges are caused. With the new device (read f ort what the device of E v ii thov en - E d e 1 never made it so subtle, namely the String, the arc lamp, the lens systems and the photographic recording. In their place there is a machine-based reliable direction, where the particularly fine adjustment and Regulating devices cannot be operated and that he is always ready to receive.

Claims (1)

PATEIXT-A x#spi, u c ii: Vorrichtung zur Aufnahme der schwa- I chen, beim Herzschlag entstehenden elek- trischen Ströme, dadurch gekennzeichnet, daß an dein von dem zu behandelnden Kör- per (a) ausgehenden Kabel las Gitter ( ' c) und in dem anderen Kabel die Kathode einer Glühkathodenröhre (ei eingeschaltet ist.
PATEIXT-A x # spi, u c ii: Device for receiving the black I. the electrical elec- tric currents, characterized that your body to be treated by (a) outgoing cable read grid (' c) and in the other cable the cathode a hot cathode tube (e i switched on is.
DEG57035D Device for picking up the weak electrical currents generated by the heartbeat Expired DE379130C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG57035D DE379130C (en) Device for picking up the weak electrical currents generated by the heartbeat

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG57035D DE379130C (en) Device for picking up the weak electrical currents generated by the heartbeat

Publications (1)

Publication Number Publication Date
DE379130C true DE379130C (en) 1923-08-17

Family

ID=7131480

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG57035D Expired DE379130C (en) Device for picking up the weak electrical currents generated by the heartbeat

Country Status (1)

Country Link
DE (1) DE379130C (en)

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