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GB1523263A - Foetal scalp electrodes - Google Patents

Foetal scalp electrodes

Info

Publication number
GB1523263A
GB1523263A GB5417/77A GB541777A GB1523263A GB 1523263 A GB1523263 A GB 1523263A GB 5417/77 A GB5417/77 A GB 5417/77A GB 541777 A GB541777 A GB 541777A GB 1523263 A GB1523263 A GB 1523263A
Authority
GB
United Kingdom
Prior art keywords
head
needle
cavity
foetal scalp
wire
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
GB5417/77A
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.)
AW Showell Surgicraft Ltd
Original Assignee
AW Showell Surgicraft Ltd
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 AW Showell Surgicraft Ltd filed Critical AW Showell Surgicraft Ltd
Priority to GB5417/77A priority Critical patent/GB1523263A/en
Publication of GB1523263A publication Critical patent/GB1523263A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/43—Detecting, measuring or recording for evaluating the reproductive systems
    • A61B5/4306—Detecting, measuring or recording for evaluating the reproductive systems for evaluating the female reproductive systems, e.g. gynaecological evaluations
    • A61B5/4343—Pregnancy and labour monitoring, e.g. for labour onset detection
    • A61B5/4362—Assessing foetal parameters
    • 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]
    • A61B5/283—Invasive
    • A61B5/288—Invasive for foetal cardiography, e.g. scalp electrodes
    • 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
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/344—Foetal cardiography
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/04—Electrodes
    • A61N1/05—Electrodes for implantation or insertion into the body, e.g. heart electrode
    • A61N1/056—Transvascular endocardial electrode systems
    • A61N1/057—Anchoring means; Means for fixing the head inside the heart
    • A61N1/0573—Anchoring means; Means for fixing the head inside the heart chacterised by means penetrating the heart tissue, e.g. helix needle or hook

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Cardiology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Pathology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Biophysics (AREA)
  • Pediatric Medicine (AREA)
  • Reproductive Health (AREA)
  • Pregnancy & Childbirth (AREA)
  • Gynecology & Obstetrics (AREA)
  • Vascular Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)

Abstract

1523263 Foetal scalp electrode A W SHOWELL (SURGICRAFT) Ltd and J COPELAND 9 Feb 1977 05417/77 Heading A5R A foetal scalp electrode comprises a tubular torsional spring member 3 secured at one end to an electrical connector (1), Fig. 1 (not shown) and at the other end to a head member 2 of electrically insulating material, and a central electrically conductive wire 6 extending axially through member 3 from a terminal in the connector 1 to a cavity 9 in the head member 2 where the wire is provided with an electrically conductive arcuate needle 10 on an electrically conductive arm 11 extending radially from the wire 6, needle 10 normally being urged by the torsion in spring member 3 out of the cavity 9 through a hole (12), Figs. 4 and 5 (not shown), with the needle point looping back to a flat surface 13 on the outside of head 2 and the point re-entering the cavity 9 via a second hole (14), a concave surface 15 on the outside of the head 2 facing oppositely to surface 13. Rotation of spring member 3 relative to the head 2 withdraws the needle 10 into the cavity 9, whereupon the flat surface 13 is placed against the foetal scalp and the member 3 released so that needle 10 loops through the foetal scalp. Contact with the mother is made by means of the connector (1) and either an exposed part, adjacent head 2, of a conductive helical spring forming the member 3, or a conductive wire outside a tube of plastics material forming the member 3.
GB5417/77A 1977-02-09 1977-02-09 Foetal scalp electrodes Expired GB1523263A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB5417/77A GB1523263A (en) 1977-02-09 1977-02-09 Foetal scalp electrodes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5417/77A GB1523263A (en) 1977-02-09 1977-02-09 Foetal scalp electrodes

Publications (1)

Publication Number Publication Date
GB1523263A true GB1523263A (en) 1978-08-31

Family

ID=9795798

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5417/77A Expired GB1523263A (en) 1977-02-09 1977-02-09 Foetal scalp electrodes

Country Status (1)

Country Link
GB (1) GB1523263A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4624265A (en) * 1985-07-24 1986-11-25 Ge. Sv. In. S.R.L. Electro-catheter used in physiological cardiac stimulation simulative of the auriculo-ventricular sequence, featuring active engagement of the cardiac muscle
US4690148A (en) * 1984-09-13 1987-09-01 Cordis Corporation Surface mapping electrode sets
EP0248627A2 (en) * 1986-06-05 1987-12-09 Rocket of London Limited Instrument for monitoring foetal heart rate
EP0393265A1 (en) * 1987-07-13 1990-10-24 Intermedics Inc. Active fixation mechanism for a cardiac stimulating electrode
US5330525A (en) * 1993-04-29 1994-07-19 Medtronic, Inc. Epicardial lead having dual rotatable anchors
GB2410442A (en) * 2004-01-28 2005-08-03 Surgicraft Ltd Foetal scalp electrode with orientation marking

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4690148A (en) * 1984-09-13 1987-09-01 Cordis Corporation Surface mapping electrode sets
US4624265A (en) * 1985-07-24 1986-11-25 Ge. Sv. In. S.R.L. Electro-catheter used in physiological cardiac stimulation simulative of the auriculo-ventricular sequence, featuring active engagement of the cardiac muscle
EP0248627A2 (en) * 1986-06-05 1987-12-09 Rocket of London Limited Instrument for monitoring foetal heart rate
EP0248627A3 (en) * 1986-06-05 1988-04-20 Rocket of London Limited Instrument for monitoring foetal heart rate
EP0393265A1 (en) * 1987-07-13 1990-10-24 Intermedics Inc. Active fixation mechanism for a cardiac stimulating electrode
US5330525A (en) * 1993-04-29 1994-07-19 Medtronic, Inc. Epicardial lead having dual rotatable anchors
GB2410442A (en) * 2004-01-28 2005-08-03 Surgicraft Ltd Foetal scalp electrode with orientation marking
GB2410442B (en) * 2004-01-28 2005-12-07 Surgicraft Ltd Fetal scalp electrodes

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19970208