Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS2660175 A
Publication typeGrant
Publication dateNov 24, 1953
Filing dateAug 10, 1951
Priority dateAug 10, 1951
Publication numberUS 2660175 A, US 2660175A, US-A-2660175, US2660175 A, US2660175A
InventorsGrosz Frank A, Thrasher Clyde E
Original AssigneeGrosz Frank A, Thrasher Clyde E
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Electrocardiograph electrode
US 2660175 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

N 1953 c. E. THRASHER ET AL 2,660,175

ELECTROCARDIOGRAPH ELECTRODE Filed Aug. 10, 1951 1 Y INVENTOR C'L o: Z Tue/931952 WZ mazq-flunm v 0mm ATTORNEYS Patented Nov. 24, 1953 OFFICE ELEOTROCARDIOGRAPH ELECTRODE Clyde E. Thrasher, McKinney, and Frank A. Grosz, Marshall, Tex.

Application August 10, 1951, Serial No. 241,322

2 Claims.

This invention relates to electrocardiograph apparatus, and more particularly to an improved electrocardiograph electrode.

A main object of the invention is to provide a novel and improved electrode foruse in electrocardiography, the improved electrode being simple in construction, being easy to apply, and providing greatly reduced interference, as compared with the electrodes previously employed which must be held by the patient or by the operator when taking readings.

A further object of the invention is to provide an improved electrode for use in electrocardiography which is inexpensive to fabricate, which is sturdy in construction, which is self supporting when placed on the patient, and which provides good contact with the patients body and which is not disturbed by the breathing of the patient or by other movements, the degree of interference obtained by the use of the improved electrode being minimized, and the effort required on the part of the technician being greatly reduced as compared with the use of electrocardiograph electrodes of the prior art.

Further objects and advantages of the invention will become apparent from the following description and claims, and from the accompanying drawings, wherein:

' Figure 1 is a top plan view of an improved electrocardiograph electrode constructed in accordance with the present invention;

Figure 2 is a side elevational view of the improved electrode of Figure 1;

Figure 3 is a bottom plan view of the electrode of Figures 1 and 2;

Figure 4 is a cross-sectional View taken on the 7 line l4 of Figure 1;

Figure 5 is a view similar to Figure 2, said view being partly in vertical cross-section, and showing the electrode in working position.

Referring to the drawings, the electrode is designated generally at H, and comprises a vacuum cup 12 of elastic deformable material, such as rubber or the like, said cup being generally conical in contour and being formed at its top end with the inner, downwardly extending sleeve portion 33. Designated at It is a circular metal electrode formed on its bottom surface with the corn centric, circular ribs 15 and formed with the axial shank [5, which is sealingly received in the depending sleeve element E3. The top end of shank it is reduced in diameter and is formed with external threads, said top end being designated at E1, the threaded end I! being engaged in the internally threaded sleeve member It, as

top of the cup member [2, as by being screwed tightly on the threaded shank element I! to bring flange 19 into firm contact with the top of cup l2. Designated at 20 is a binding post which is formed with a reduced axial stud portion 2| threadedly engaged in the sleeve element It and abutting the end of the shank element ll. The top of binding post 20 is formed with the circular disc element 22 which is covered with insulating material 23, whereby the top end of the binding post 2!! defines a handle or knob for manipulating the electrode. The binding post 2 is formed with a transverse bore through which is engaged the conductor 24 leading to the electrocardiograph apparatus. Designated at 25 is a set screw threaded into the binding post 20 and being arranged to clampingly engage the conductor 24 to securely fasten said conductor to the binding post in conductive relationship therewith.

In using the electrode, the operator places it on the portion of the patients body at which the electrocardiograph reading is to be taken and exerts firm inward pressure with his fingers against the cup while exerting pressure with his palm against the knob or handle above described, whereby the cup [2 is distorted to the position of Figure 5, and the electrode element [4 is brought into firm contact with the selected area on the patients body. Due to the vacuum developed inside the cup l2, the external air pressure acts on the surrounding portions of the patients body and forces the engaged area of the patients skin into intimate contact with the electrode It and maintains said contact throughout the time during which the cardiogram is being taken. It will be apparent that after the electrode has been placed on the patients body in the manner above described, no further efiort is required on the part of the technician or on the part of the patient to hold the electrode in position, and the electrode remains in adhering relationship to the patients body as long as desired. Once the electrode has been placed on the body of the patient, good contact is assured and the electrode will remain in position until removed at the conclusion of the electrocardiograph reacling. Therefore, after the electrode has been placed on the patients body, the technician is free to operate the electrocardiograph apparatus, and a reading may be taken by a single technician.

While a specific embodiment of an improved vacuum-type electrode for electrocardiograph machines has been disclosed in the foregoing description, it will be understood that various modifications within the spirit of the invention may occur to those skilled in the art. Therefore, it is intended that no limitations be placed on the invention except as defined by the scope of the appended claims.

What is claimed is:

1. A device of the character. described comprising a vacuum cup of elastic deformable material,

a metal electrode inside said cup, a plurality of depending concentric circular ribs on said electrode, a shank element rigidly secured axially to said electrode and extending through the top of said cup, means sealingly securing said shank element to said cup, and a binding post conductively secured to said shank element externally of said cup.

2. An electrocardiograph electrode comprising a vacuum cup of elastic deformable material, a circular electrode element inside said cup, a plurality of depending concentric circular ribs on said electrode element, an axial shank rigidly secured to said element and extending through the top portion of said cup, an annular washer element secured on said shank and engaging the external surface of the top portion of the cup, a metal post member threadedly engaging said washer element in axial alignment with and abutting said shank, said post member being formed with a. transverse bore adapted to receive a conductor, and a set screw threaded into said post member and arranged to clampingly engage the conductor.


References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 116,004 Amer June 20, 1871 872,688 Saighman Dec.. 3, 1907 2,580,628 Welsh Jan. I, 1952

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US116004 *Jun 20, 1871 Improvement in attachments for vacuum-cups
US872688 *Dec 30, 1903Dec 3, 1907Edward S SaighmanElectrical and thermal cupping device.
US2580628 *Jul 12, 1950Jan 1, 1952Bowen & Company IncSuction electrode
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2752914 *Oct 25, 1954Jul 3, 1956Usag Ultraschall A GBody attaching means for ultrasonic apparatus
US2983273 *Sep 15, 1958May 9, 1961Howell William LElectrode
US3078850 *Aug 26, 1960Feb 26, 1963Imp Electronics IncElectrochemotherapeutic cardiac device
US3196877 *Nov 14, 1962Jul 27, 1965Corbin Farnsworth IncDefibrillation electrode device
US3474775 *Feb 27, 1967Oct 28, 1969Johnson William RElectrode assembly for skin contact
US3490442 *Feb 2, 1967Jan 20, 1970Hellige & Co Gmbh FElectrode with contact-forming suction cup means
US3498291 *Feb 10, 1966Mar 3, 1970Lockheed Aircraft CorpBody signal sensing electrode apparatus
US3505993 *Dec 17, 1965Apr 14, 1970Nat Res DevElectrocardiograph electrodes with surface convexities
US3568663 *Dec 23, 1968Mar 9, 1971Us NavyPhysiological data acquisition system
US3640270 *Jul 29, 1970Feb 8, 1972Niess Elektromed IngeborgElectric contactor with venturi-suction means for organic tissue
US3830227 *Sep 15, 1969Aug 20, 1974Green HHand-held cardiac sound tone diagnostic device and method
US3896790 *May 1, 1972Jul 29, 1975Neuronics IncAlpha brain wave sensor
US4299232 *Jun 19, 1979Nov 10, 1981Mario ZiliantiBipolar electrodes for fetal heart-rate recording during labor
US4535783 *Aug 1, 1983Aug 20, 1985Kontron Holding A.G.Personal electrocardiology recorder
US4736749 *Apr 4, 1986Apr 12, 1988Astra-Tech AktiebolagHolder for medical use fixed by vacuum
US5782761 *Jan 24, 1996Jul 21, 1998Graphic Controls CorporationMolded electrode
DE2742058A1 *Sep 19, 1977Mar 29, 1979Guenter Prof Dipl Ing Dr R RauFixture for data pick=up and measuring electrode - has flexible one-piece suction cup of plastics esp. for use on skin surfaces
DE3438788A1 *Oct 23, 1984May 9, 1985Astra Tech AbDurch vakuum befestigte und stabilisierte elektrode
U.S. Classification600/387, 439/814, 248/362
International ClassificationA61B5/0416, A61B5/0408
Cooperative ClassificationA61B5/04082, A61B5/0416
European ClassificationA61B5/0408B, A61B5/0416