Classifications

• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
  • A61B5/6887—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient mounted on external non-worn devices, e.g. non-medical devices
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/22—Ergometry; Measuring muscular strength or the force of a muscular blow
  • A61B5/221—Ergometry, e.g. by using bicycle type apparatus
  • A61B5/222—Ergometry, e.g. by using bicycle type apparatus combined with detection or measurement of physiological parameters, e.g. heart rate
• • A—HUMAN NECESSITIES
  • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
  • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
  • A61B5/00—Measuring for diagnostic purposes; Identification of persons
  • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
  • A61B5/25—Bioelectric electrodes therefor
  • A61B5/279—Bioelectric electrodes therefor specially adapted for particular uses
  • A61B5/28—Bioelectric electrodes therefor specially adapted for particular uses for electrocardiography [ECG]
  • A61B5/282—Holders for multiple electrodes

Definitions

• the present invention relates to medical diagnostic electrode devices for use with diagnostic instruments such as an EKG, and more particularly, to a set of EKG electrodes arranged to minimize the required set-up time before commencing the test.
• the prior art of medical diagnostic electrodes includes a set of electrodes for application to the body skin for purposes of performing an EKG test. Individual ones of theses electrodes are applied by a medical assistant to the limbs and chest of the patient, and this requires a certain set-up time in preparation for the test. The electrodes are attached to cables which often become entangled, making identification of the proper electrode difficult as well as consuming additional set ⁇ up time.
• U.S. Patent 4,706,679 to Blackham et al. discloses an adjustable head set for use in performing an EEG test, with the head set held in place on the back of a patient's head when the patient leans back against a chair head rest.
• the head set includes disposable monitors which provide good contact with the head without prior skin preparation. This design is not applicable to EKG testing.
• U.S. Patent 4,320,768 to Golab et al. discloses an integrated medical testing system for automated administration of test stimuli to a patient, including stimulation control means for automatically administering the stimuli and for controlling a rotatable chair in which the patient is seated.
• a set of electrodes for stimulating regions of the skin of disabled individuals is disclosed in U.S. Patent
• an electrode system for reducing the set-up time in medical diagnostic testing comprising in combination: support structure means for supporting the body; a first plurality of electrodes supported by said support structure means; and a second plurality of electrodes each fixedly mounted at a location on said support structure means, such that when the body is supported by said support structure means, said first and second plurality of electrodes contact the body and enable rapid electrical connection thereto for diagnostic testing.
• the inventive electrode system comprises a chair designed for use in administering an EKG. est, with a flexible strap having electrodes embedded therein.
• the flexible strap is attached to the seat back rest and is tightened around the chest when the patient is seated in the chair. Electrodes fitted in the lower portion of the chair and the armrest make connection, respectively, to the legs and arms, thereby completing the set-up procedure in a short time period.
• the electrodes embedded in the flexible strap are adjustable horizontally, and the strap itself is adjustable vertically, so that particular horizontal locations on the chest are reachable, making the strap suitable for all size patients.
• the chair is preferably designed with the ability to recline and become a bed, to increase patient comfort when needed.
• a set of exercise accessories is easily and removably attached to the chair to permit EKG measurements of the patient during physical exertion, while seated or reclining.
• a feature of the electrode system is the use of a single cable multi-wire connection to the chair via a plug-in receptacle, enabling a quick, simple connection of the electrodes to the EKG machine.
• the advantages of the inventive system over the prior art include the significant reduction in set-up time for EKG tests, in addition to reducing the likelihood of connection errors.
• the electrode strap connection to the chest is more secure, without the need to shave body hair as is often needed with prior art using rubber suction cups. This also improves the quality of the connection and reduces extraneous indications.
• the electrode strap also reduces electrode wire breakage upon repeated use. Repeated EKG tests can be quickly and easily performed since the set-up procedure is simplified.
• the chair design reduces movement problems for the aged or infirm.
• the inventive electrode system can be used in many applications in hospitals, medical clinics, emergency rooms, intensive care units, cardiology units, private health institutes, old age homes, and sports medicine clinics.
• the inventive electrode system may also be applied to the development of EKG machines for self-administered tests.
• Electrodes which are vertically- oriented for body contact.
• Figs, la-b are, respectively, front and rear perspective views of an electrode system for EKG testing, constructed in accordance with the principles of the invention
• Figs. 2a-b are, respectively, a side view of the chair containing the electrode system and a top view of an exerciser;
• Figs. 3a-b show a patient seated in the chair of Figs. 1-2 and ready for EKG testing while using alternative exercisers;
• Figs. 4a-d are, respectively, a front view, an edge view and two enlarged detail views showing the assembly of an electrode strap used in the electrode system of Figs. 1-3;
• Figs. 5a-c are,. respectively, a top view, a cross- sectional view and a perspective view of an electrode mounted on the chair of Figs. 1-3;
• Figs. 6-7 are perspective views of an alternative embodiment of the invention, featuring an electrode panel for EKG testing.
• FIGs, la-b there are shown, respectively, front and rear perspective views of an electrode system arranged in a chair 10 for use in performance of EKG tests.
• Chair 10 comprises a base 12, a pair of arm rests 14, and a seat back 16.
• the electrode system comprises electrodes 18 embedded in a flexible strap 20 attached to seat back 16, and a set of fixed electrodes 22, 24 mounted respectively, in each of arm rests 14 and base 12.
• An adhesive clamp 25 is provided to secure the ends of strap 20.
• a cable receptacle 26 provided in base 12 enables a multi-wire cable connection to EKG machine 27.
• Figs. 2a-b there are shown, respectively, a side view of chair 10 containing the electrode system and a top view of an exerciser 28 which may be attached to chair 10 as needed.
• Chair 10 is designed to be adjustable into normal and reclining positions, allowing the EKG test to be performed in either or both positions.
• Seat back 16 is pivotable about an axis 30, to which there is attached one end of a foldable brace 32.
• the other end of brace 32 supports a foot rest 34, pivotable about axis 36.
• Arm rests 14 pivot about axis 36 when seat back 16 is reclined.
• Flexible strap 20 is attached so as to be adjustable vertically along seat back 16, and electrodes 18 are adjustable horizontally by movement within slots 38, enabling the electrodes 18 to be located in optimal fashion for test purposes. As described further herein, the adjustment of electrodes 18 is easily and quickly accomplished, reducing the EKG set-up time.
• Fixed electrodes 22 and 24 are also shown, for the arms and legs.
• exerciser 28 is supported by beams 40, 42 which are adjustable so as to position exerciser 28 for operation by the arms or legs as desired.
• beam 40 is attached to base 12 of chair 10, and the other end is supported on a pin 44 of a movable stand 46.
• Pin 44 is vertically adjustable to provide height adjustment of beam 40.
• Beam 42 supports exerciser 28 when positioned for operation by the arms.
• exerciser 28 is a simple piston-type unit which operates against spring tension, for example, to provide resistance against pressure applied by the arms or legs.
• the provision of a built-in exerciser 28 as shown in Fig.2a simplifies the performance of such tests, with minimum patient discomfort.
• exerciser 28 may be one of many designs, including a bicycle pedal unit 48 (Fig. 3b) for the legs.
• Exerciser 28 is designed with electrodes to provide contact with the arms and legs, since fixed electrodes 22 and 24 are not used in this case.
• Electrode strap 20 can be adapted for mounting of a transducer to solve this problem, to provide a secure chest connection which remains in place during the test.
• a patient is shown seated in the chair of Figs. 1-2 and ready for EKG testing during use of exerciser 28 (48) .
• exerciser 28 (48) may be removed and a normal EKG testing procedure performed.
• flexible strap 20 is secured via clamp 25 around the patient's chest, after electrodes 18 have been adjusted for the optimal location. Placement of the patient's arms and legs against fixed electrodes 22, 24 completes the test set-up proceedur .
• a panel light may be provided on the EKG machine to indicate that contact with the skin has been established.
• a front view of flexible strap 20 is shown, revealing the mounting arrangement of electrodes 18.
• Strap 20 comprises a pair of back-to-back layers 50 of electrically insulated material, such as plastic or cloth fabric, having formed therein a plurality of aligned slots 38.
• An electrode 18 comprising a button ⁇ like contact 54 is seated in slot 38 and an electrical connection is made to a wire 56 on a stem 58 extending from contact 54, as shown in the enlarged detail view of Fig. 4c (reversed) .
• Electrode 18 is secured by a threaded washer 59 engaging the threaded portion 60 of stem 58, so that each electrode 18 is slidably adjustable in slot 38, once contact 54 and washer 59 are assembled, as shown in the edge view (Fig 4b) .
• connection wires 56 run between layers 50 of strap 20, until they reach a cable clamp 62 which is provided to tighten against a pair of rigid strips 64 between which strap 20 is claimped.
• a hole 66 formed through one of layers 50 and strips 64 provides an exit for wires 56, which are connected to receptacle 26 (Fig. 1) .
• each of fixed electrodes 22 and 24 is shaped as a rectangular base 68 containing an absorbent pad 70, through which there passes a wire 72 connected to an electrically-conductive surface 74.
• Pad 70 contains a conductive liquid, and a plurality of holes 76 are formed in surface 74, to provide contact between the liquid and the skin and insure a good electrical connection.
• Absorbent pad 70 may be designed for use in electrodes 18.
• Wire 72 is connected to receptacle 26 for external EKG connection.
• inventive electrode system can be modified for use in a hospital bed, by attachment of fixed electrodes 22 and 24 to the bed for connection of the arms and legs.
• the attachment may utilize quick-release butterfly clamps, enabling placement of electrode strap 20 across the chest, its ends secured by the bed.
• chair 10 may be located in a pharmacy or shopping center, and an individual can seat himself in it and connect electrode strap 20 across his chest and the electrodes 22 and 24 to the arms and legs, and then upon depression of a button, the EKG is automatically operated.
• FIGs. 6-7 show perspective views of an alternative embodiment of the inventive electrode system.
• this arrangement comprises a vertical panel 80 on which there are mounted chest, arm and leg electrodes 82, 84 and 86, for placement of the chest, arms and legs so as to make a connection to these electrodes while standing.
• panel 80 is slightly tilted, adjustably, toward the body to maintain contact via pressure of the body weight on the electrodes. Again, depression of a button begins the test and provides the results.
• the advantages of a self-administered test are many, including the encouragement of more frequent testing by the general public. Even those who consider themselves healthy, and would not schedule an EKG test so as not to convey the impression of health problems, might perform the self-administered EKG test. Those with heart problems and who have regular checkups, might not arrange an EKG test until the next scheduled visit to the doctor. If, in the meantime, these individuals complain about chest pains, etc. the availability of an immediate and easily self-administered EKG test may save the life of such individuals.
• a new approach to medical diagnostic testing can be implemented, based on arrangements whereby the self- administered test is performed and the individual provides personal details, name, address, etc., and the machine provides the individual with a receipt containing a number corresponding to the test.
• the test result itself is transferred immediately, by facsimile, to a medical center where a trained technician reads the result and provides a report, possibly printed on a plastic card, which is mailed to the individual.

Applications Claiming Priority (5)

Publications (2)

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• 1992
  • 1992-05-20 AU AU20126/92A patent/AU2012692A/en not_active Abandoned
  • 1992-05-20 EP EP92912223A patent/EP0591276A4/fr not_active Withdrawn
  • 1992-05-20 WO PCT/US1992/004219 patent/WO1992020277A1/fr not_active Application Discontinuation

Patent Citations (2)

Non-Patent Citations (1)

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