WO2011046490A1 - A connector block in a vacuum electrode module - Google Patents

A connector block in a vacuum electrode module Download PDF

Info

Publication number
WO2011046490A1
WO2011046490A1 PCT/SE2010/051039 SE2010051039W WO2011046490A1 WO 2011046490 A1 WO2011046490 A1 WO 2011046490A1 SE 2010051039 W SE2010051039 W SE 2010051039W WO 2011046490 A1 WO2011046490 A1 WO 2011046490A1
Authority
WO
WIPO (PCT)
Prior art keywords
contact
tubular
connector block
vacuum
electrode
Prior art date
Application number
PCT/SE2010/051039
Other languages
French (fr)
Inventor
Jerker ÅBERG
Original Assignee
Quickels Systems Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Quickels Systems Ab filed Critical Quickels Systems Ab
Publication of WO2011046490A1 publication Critical patent/WO2011046490A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/22—Contacts for co-operating by abutting
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
    • 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
    • A61B5/251—Means for maintaining electrode contact with the body
    • A61B5/252—Means for maintaining electrode contact with the body by suction
    • 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
    • A61B5/271—Arrangements of electrodes with cords, cables or leads, e.g. single leads or patient cord assemblies
    • A61B5/273—Connection of cords, cables or leads to electrodes
    • A61B5/274—Connection of cords, cables or leads to electrodes using snap or button fasteners
    • 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]
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2101/00—One pole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/12—Connectors or connections adapted for particular applications for medicine and surgery

Definitions

  • the invention relates to a vacuum electrode module for detecting signals of electrical activity of a patient's heart.
  • WO 93/16633 discloses a prior art vacuum electrode module.
  • that prior art vacuum electrode module comprises a vacuum cup having anend wall and an annular sealing member to form a vacuum chamber with a patient's skin.
  • An electrode extends through the end wall to engage the patient's skin to detect signals of electrical activity of the patient's heart.
  • a connector block of resilient material is provided in the housing with a cavity in contact with the vacuum chamber via an air passage and openings in the vacuum cup.
  • a first tubular section of the connector block is connected to the cavity and adapted to receive through an inlet in the housing a tubular contact connected to a wire for detected signals as well as to a vacuum hose.
  • a second tubular section of the connector block is adapted to receive a contact knob of the electrode.
  • the connector block of the prior art vacuum electrode module is made of an electrically conducting resilient material.
  • Disadvantages of the known connector block include high resistance, high contact impedance between the connector block and the contact knob of the electrode and the tubular contact, respectively, poor clamping force between the connector block and the contact knob of the electrode and the tubular contact, respectively, and short lasting mechanical and electrical properties of the connector block material.
  • the object of the invention is to eliminate the disadvantages of the known connector block.
  • the resistance will be low between the tubular contact and the contact knob of the electrode.
  • the contact impedance will be low between the coil springs and the tubular contact and the contact knob of the electrode, respectively.
  • the clamping force will be high between the coil springs and the contact knob of the electrode element and the tubular contact, respectively.
  • first and the second tubular sections are tapered.
  • the contact impedance will be further reduced at the same time as the clamping force will increase.
  • the connector block is insulating.
  • FIG. 1 illustrate a cross section of an embodiment of the vacuum electrode module according to the invention.
  • Fig. 1 shows a cross section of an embodiment of a vacuum electrode module according to the invention.
  • the vacuum electrode module comprises a vacuum cup 2 that has an end wall 3 and an annular sealing member 4 which form a vacuum chamber with a patient's skin (not shown).
  • An electrode 5 extends through the end wall 3 of the vacuum cu 2 and is adapted to engage the patient's skin to detect signals of electrical activity of the patient's heart.
  • a connector block 6 of resilient material is provided with a cavity 7 in contact with the vacuum chamber via an air passage 8 in the connector block 6 and openings 9 in the end wall 3 of the vacuum cup 2.
  • the connector block 6 is preferably insulating.
  • a tubular section 10 of the connector block 6 connected to the cavity 7 is adapted to receive through an inlet 11 in the housing 1 a tubular contact 12 that is connected to a vacuum pump (not shown) by means of a schematically shown vacuum hose 13.
  • the tubular contact 12 is also connected to a schematically shown wire 14 for transferring signals of electrical activity of the patient's heart detected by the electrode 5 to a monitoring device (not shown).
  • Another tubular section 15 of the connector block 6 is adapted to receive a contact knob 16 of the electrode 5 facing away from the patient's skin.
  • electrically interconnected conductive coil springs 17 and 18 that are exposed inside said first and second tubular sections 10 and 15, respectively, are molded into the connector block 6 around said first and second tubular sections 10 and 15, respectively.
  • the conductive coil springs 17 and 18 are interconnected as indicated by a wire 19, the resistance will be low between the tubular contact 12 and the contact knob 16 of the electrode 5.
  • the contact impedance will be low between the coil springs 17 and 18 and the tubular contact 12 and the contact knob 16 of the electrode 5, respectively.
  • the clamping force will be high between the coil springs 17 and 18 and the tubular contact 12 and the contact knob 16 of the electrode 5, respectively.
  • the vacuum cup 4 is of a disposable type that is snapped on to the housing 1 by means of the contact knob 16 of the electrode 5 and secured to the housing 1 by means of the coil spring 18.
  • the contact impedance between the coil springs 17 and 18 and the tubular contact 12 and the contact knob 16 of the electrode 5, respectively is further reduced at the same time as the clamping force between the coil springs 17 and 18 and the tubular contact 12 and the contact knob 16 of the electrode 5, respectively, is further increased by making the first and second tubular sections 17 and 18 tapered.

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biophysics (AREA)
  • Physics & Mathematics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Cardiology (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)

Abstract

A vacuum electrode module comprises in a housing (1), a vacuum cup (2) having an end wall (3) and an annular sealing member (4) to form a vacuum chamber with a patient's skin. An electrode (5) extends through the end wall (3) to engage the patient's skin to detect signals of electrical activity of the patient's heart. A connector block (6) of resilient material is provided in the housing (1) with a cavity (7) in contact with the vacuum chamber via an air passage (8) and openings (9) in the vacuum cup (2). A first tubular section (10) of the connector block (6) is connected to said cavity (7) and adapted to receive through an inlet (11) in the housing (1) a tubular contact (12) connected to a wire (14) for detected signals as well as to a vacuum hose (13). A second tubular section (15) of the connector block (6) is adapted to receive a contact knob (16) of the electrode (5). To establish electric contact between the tubular contact (12) and the contact knob (16) when the tubular contact (12) is received in the first tubular section (10), electrically interconnected conductive coil springs (17, 18) exposed inside the first and second tubular sections (10, 15) are molded into the connector block (6) around the first and second tubular sections (10, 15).

Description

A CONNECTOR BLOCK IN A VACUUM ELECTRODE MODULE
TECHNICAL FIELD
The invention relates to a vacuum electrode module for detecting signals of electrical activity of a patient's heart.
BACKGROUND OF THE INVENTION
WO 93/16633 discloses a prior art vacuum electrode module.
In a housing, that prior art vacuum electrode module comprises a vacuum cup having anend wall and an annular sealing member to form a vacuum chamber with a patient's skin. An electrode extends through the end wall to engage the patient's skin to detect signals of electrical activity of the patient's heart. A connector block of resilient material is provided in the housing with a cavity in contact with the vacuum chamber via an air passage and openings in the vacuum cup. A first tubular section of the connector block is connected to the cavity and adapted to receive through an inlet in the housing a tubular contact connected to a wire for detected signals as well as to a vacuum hose. A second tubular section of the connector block is adapted to receive a contact knob of the electrode.
The connector block of the prior art vacuum electrode module is made of an electrically conducting resilient material.
Disadvantages of the known connector block include high resistance, high contact impedance between the connector block and the contact knob of the electrode and the tubular contact, respectively, poor clamping force between the connector block and the contact knob of the electrode and the tubular contact, respectively, and short lasting mechanical and electrical properties of the connector block material. SUMMARY OF THE INVENTION
The object of the invention is to eliminate the disadvantages of the known connector block.
This is attained in accordance with the invention in that electrically interconnected conductive coil springs exposed inside said first and second tubular sections are molded into the connector block around said first and second tubular sections to establish electric contact between said tubular contact and said contact knob when said tubular contact is received in said first tubular section.
Hereby, the resistance will be low between the tubular contact and the contact knob of the electrode. Also, the contact impedance will be low between the coil springs and the tubular contact and the contact knob of the electrode, respectively. Moreover, the clamping force will be high between the coil springs and the contact knob of the electrode element and the tubular contact, respectively.
In one embodiment, the first and the second tubular sections are tapered.
Hereby, the contact impedance will be further reduced at the same time as the clamping force will increase.
In one embodiment, the connector block is insulating. BRIEF DESCRIPTION OF THE DRAWING
The invention will be described more in detail below with reference to the appended drawing on which the single Fig. 1 illustrate a cross section of an embodiment of the vacuum electrode module according to the invention.
DESCRIPTION OF THE INVENTION
Fig. 1 shows a cross section of an embodiment of a vacuum electrode module according to the invention. In a housing 1 , the vacuum electrode module comprises a vacuum cup 2 that has an end wall 3 and an annular sealing member 4 which form a vacuum chamber with a patient's skin (not shown).
An electrode 5 extends through the end wall 3 of the vacuum cu 2 and is adapted to engage the patient's skin to detect signals of electrical activity of the patient's heart.
In the housing 1, a connector block 6 of resilient material is provided with a cavity 7 in contact with the vacuum chamber via an air passage 8 in the connector block 6 and openings 9 in the end wall 3 of the vacuum cup 2.
In accordance with the invention, the connector block 6 is preferably insulating.
To produce vacuum in the vacuum chamber, a tubular section 10 of the connector block 6 connected to the cavity 7 is adapted to receive through an inlet 11 in the housing 1 a tubular contact 12 that is connected to a vacuum pump (not shown) by means of a schematically shown vacuum hose 13. The tubular contact 12 is also connected to a schematically shown wire 14 for transferring signals of electrical activity of the patient's heart detected by the electrode 5 to a monitoring device (not shown).
Another tubular section 15 of the connector block 6 is adapted to receive a contact knob 16 of the electrode 5 facing away from the patient's skin.
In accordance with the invention, to establish electric contact between the contact knob 16 of the electrode 5 and the tubular contact 12 to which the signal wire 14 is connected, electrically interconnected conductive coil springs 17 and 18 that are exposed inside said first and second tubular sections 10 and 15, respectively, are molded into the connector block 6 around said first and second tubular sections 10 and 15, respectively. Hereby, since the conductive coil springs 17 and 18 are interconnected as indicated by a wire 19, the resistance will be low between the tubular contact 12 and the contact knob 16 of the electrode 5. Also, the contact impedance will be low between the coil springs 17 and 18 and the tubular contact 12 and the contact knob 16 of the electrode 5, respectively. Moreover, the clamping force will be high between the coil springs 17 and 18 and the tubular contact 12 and the contact knob 16 of the electrode 5, respectively.
It should be pointed out that in the embodiment in Fig. 1, the vacuum cup 4 is of a disposable type that is snapped on to the housing 1 by means of the contact knob 16 of the electrode 5 and secured to the housing 1 by means of the coil spring 18.
Also, it should be pointed out that leakage is prevented between the inside of the tubular section 10 of the connector block 6 and the outside of the tubular contact 12 in that the connector block 6 is made of a resilient material.
In accordance with the invention, the contact impedance between the coil springs 17 and 18 and the tubular contact 12 and the contact knob 16 of the electrode 5, respectively, is further reduced at the same time as the clamping force between the coil springs 17 and 18 and the tubular contact 12 and the contact knob 16 of the electrode 5, respectively, is further increased by making the first and second tubular sections 17 and 18 tapered.

Claims

1. A vacuum electrode module comprising in a housing (1), a vacuum cup (2) having an end wall (3) and an annular sealing member (4) to form a vacuum chamber with a patient's skin, an electrode (5) extending through said end wall (3) to engage the patient's skin to detect signals of electrical activity of the patient's heart, and a connector block (6) of resilient material with a cavity (7) in contact with the vacuum chamber via an air passage (8) and openings (9) in the vacuum cup (2), a first tubular section (10) of the connector block (6) connected to said cavity (7) and adapted to receive through an inlet (11) in the housing (1) a tubular contact (12) connected to a wire (14) for detected signals as well as to a vacuum hose (13), and a second tubular section (15) of the connector block (6) adapted to receive a contact knob (16) of the electrode (5), characterized in that electrically interconnected conductive coil springs (17, 18) exposed inside said first and second tubular sections (10, 15) are molded into the connector block (6) around said first and second tubular sections (10, 15) to establish electric contact between said tubular contact (12) and said contact knob (16) when said tubular contact (12) is received in said first tubular section (10).
2. The module according to claim 1, characterized in that said first and second tubular sections (10, 15) are tapered.
3. The module according to claim 1 or 2, characterized in that the connector block (6) is insulating.
PCT/SE2010/051039 2009-10-16 2010-09-28 A connector block in a vacuum electrode module WO2011046490A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0901333A SE534163C2 (en) 2009-10-16 2009-10-16 Connection piece in a vacuum electrode unit
SE0901333-5 2009-10-16

Publications (1)

Publication Number Publication Date
WO2011046490A1 true WO2011046490A1 (en) 2011-04-21

Family

ID=43876347

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2010/051039 WO2011046490A1 (en) 2009-10-16 2010-09-28 A connector block in a vacuum electrode module

Country Status (2)

Country Link
SE (1) SE534163C2 (en)
WO (1) WO2011046490A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3011900A1 (en) * 2014-10-24 2016-04-27 Quickels Systems AB Electrode module, suction system and tool for biopotential monitoring

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750094A (en) * 1972-03-09 1973-07-31 Zenco Engineering Corp Electrical connector
US4460231A (en) * 1981-02-23 1984-07-17 Nicolay Gmbh Electrical connector
US4773424A (en) * 1985-10-02 1988-09-27 Fukuda Denshi Co., Ltd. Electrocardiographic electrode
US4842557A (en) * 1987-06-11 1989-06-27 Nicolay Gmbh Contact device for making an electrically conductive connection
US5232383A (en) * 1992-10-21 1993-08-03 Barnick Robert C Medical snap connector
US5326272A (en) * 1990-01-30 1994-07-05 Medtronic, Inc. Low profile electrode connector
US5553612A (en) * 1992-02-20 1996-09-10 Humanteknik Ab Device for securing an object to a surface by vacuum
US20020019166A1 (en) * 2000-07-06 2002-02-14 Johan Ubby Monitoring cable

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3750094A (en) * 1972-03-09 1973-07-31 Zenco Engineering Corp Electrical connector
US4460231A (en) * 1981-02-23 1984-07-17 Nicolay Gmbh Electrical connector
US4773424A (en) * 1985-10-02 1988-09-27 Fukuda Denshi Co., Ltd. Electrocardiographic electrode
US4842557A (en) * 1987-06-11 1989-06-27 Nicolay Gmbh Contact device for making an electrically conductive connection
US5326272A (en) * 1990-01-30 1994-07-05 Medtronic, Inc. Low profile electrode connector
US5553612A (en) * 1992-02-20 1996-09-10 Humanteknik Ab Device for securing an object to a surface by vacuum
US5842985A (en) * 1992-02-20 1998-12-01 Humanteknik Ab Device for securing an object to a surface by vacuum
US5232383A (en) * 1992-10-21 1993-08-03 Barnick Robert C Medical snap connector
US20020019166A1 (en) * 2000-07-06 2002-02-14 Johan Ubby Monitoring cable

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3011900A1 (en) * 2014-10-24 2016-04-27 Quickels Systems AB Electrode module, suction system and tool for biopotential monitoring

Also Published As

Publication number Publication date
SE0901333A1 (en) 2011-04-17
SE534163C2 (en) 2011-05-17

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