GB994400A - Apparatus for detecting and localizing extraneous objects of electrically conductingor magnetically permeable material in human or animal tissue - Google Patents
Apparatus for detecting and localizing extraneous objects of electrically conductingor magnetically permeable material in human or animal tissueInfo
- Publication number
- GB994400A GB994400A GB2777163A GB2777163A GB994400A GB 994400 A GB994400 A GB 994400A GB 2777163 A GB2777163 A GB 2777163A GB 2777163 A GB2777163 A GB 2777163A GB 994400 A GB994400 A GB 994400A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- output
- oscillator
- circuit
- passed
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/15—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation specially adapted for use during transport, e.g. by a person, vehicle or boat
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/06—Devices, other than using radiation, for detecting or locating foreign bodies ; determining position of probes within or on the body of the patient
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- General Health & Medical Sciences (AREA)
- Pathology (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Human Computer Interaction (AREA)
- Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Biophysics (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
994,400. Locating foreign bodies. BANG & OLUFSEN PRODUKTIONSSELSKAB A.S. July 12, 1963 [July 13, 1962; March 11, 1963], No. 27771/63. Heading A5R. [Also in Division G1] Apparatus for detecting metallic objects in human or animal tissue comprises two electrical oscillators, a controlling coil for one of the oscillators being mounted in a feeler member, and automatic frequency control means, having a large time delay, which tends to keep the frequency of the other oscillator at a predetermined spacing from the first. An oscillator 2 is coupled with the search coil 1 and its output is passed through a frequency multiplier 3 and filter 4 to a mixing circuit 7 which also receives the output from an oscillator 5 through a filter 6. The beat frequency, which is preferably of the order of 400 c/s., is passed through a volume control 8 and amplifier 9 to an earpiece 10, so that if the search coil 1 is brought near to a metallic object the frequency of oscillator 2 is changed and the resultant change of output tone is apparent in the earpiece 10. In order to prevent the apparatus being influenced by large masses of metal in the vicinity of the patient, part of the output is passed through an amplifier 11 and counting device 12, 13, 14 to an automatic frequency control 15 which changes the frequency of oscillator 5 in such a way as to tend to maintain the original output tone constant. However, it does so with appreciable time delay so that although it corrects for large static metal masses, whereby they have no effect on the operation of the equipment, it does not influence the change in output tone resulting from the comparatively rapid movement of the search coil 1 in the vicinity of metal to be located. If the output frequency becomes so high that the circuit 12, 13, 14 cannot follow it, it passes through a high-pass filter 16 to actuate a relay 17 which applies to the A.F.C. circuit 15 a voltage of sufficient magnitude to restore the output to a frequency which the circuit 12, 13, 14 can accommodate.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DK313462A DK103580C (en) | 1962-07-13 | 1962-07-13 | Apparatus for searching for and locating foreign bodies of electrically or magnetically conductive material in human or animal tissue. |
| DK111663 | 1963-03-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB994400A true GB994400A (en) | 1965-06-10 |
Family
ID=26065257
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2777163A Expired GB994400A (en) | 1962-07-13 | 1963-07-12 | Apparatus for detecting and localizing extraneous objects of electrically conductingor magnetically permeable material in human or animal tissue |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB994400A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3211003A1 (en) * | 1982-03-25 | 1983-10-13 | Stefan Dr. 6500 Mainz Kunke | METHOD AND DEVICE FOR DETERMINING THE POSITION OF A PROBE |
| EP0153021A1 (en) * | 1984-01-23 | 1985-08-28 | Ortho Pharmaceutical (Canada) Ltd | Intrauterine device detection and removal system |
| WO1986002539A1 (en) * | 1984-11-01 | 1986-05-09 | Pekka Johannes Nyberg | Device for localizing metal objects in a human or animal body |
| US4727866A (en) * | 1984-01-23 | 1988-03-01 | Ortho Pharmaceutical (Canada) Ltd. | Intrauterine device detection and removal system |
| WO1990000030A1 (en) * | 1988-07-01 | 1990-01-11 | Koch Elektronik + Apparatebau Ag | Measurement probe for locating metallic objects in the human or animal body |
| WO1998005255A1 (en) * | 1996-08-02 | 1998-02-12 | Kettner Karl Ulrich | Device for protecting vessels during surgical interventions |
| EP1434062A2 (en) * | 2002-12-27 | 2004-06-30 | Firma Ing. Klaus Ebinger | Method for detecting metal objects and metal detector |
-
1963
- 1963-07-12 GB GB2777163A patent/GB994400A/en not_active Expired
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3211003A1 (en) * | 1982-03-25 | 1983-10-13 | Stefan Dr. 6500 Mainz Kunke | METHOD AND DEVICE FOR DETERMINING THE POSITION OF A PROBE |
| EP0153021A1 (en) * | 1984-01-23 | 1985-08-28 | Ortho Pharmaceutical (Canada) Ltd | Intrauterine device detection and removal system |
| US4572162A (en) * | 1984-01-23 | 1986-02-25 | Ortho Pharmaceutical (Canada) Ltd. | Method for the detection, location and extraction of an intrauterine device |
| US4727866A (en) * | 1984-01-23 | 1988-03-01 | Ortho Pharmaceutical (Canada) Ltd. | Intrauterine device detection and removal system |
| WO1986002539A1 (en) * | 1984-11-01 | 1986-05-09 | Pekka Johannes Nyberg | Device for localizing metal objects in a human or animal body |
| WO1990000030A1 (en) * | 1988-07-01 | 1990-01-11 | Koch Elektronik + Apparatebau Ag | Measurement probe for locating metallic objects in the human or animal body |
| WO1998005255A1 (en) * | 1996-08-02 | 1998-02-12 | Kettner Karl Ulrich | Device for protecting vessels during surgical interventions |
| EP1434062A2 (en) * | 2002-12-27 | 2004-06-30 | Firma Ing. Klaus Ebinger | Method for detecting metal objects and metal detector |
| EP1434062A3 (en) * | 2002-12-27 | 2005-06-15 | Firma Ing. Klaus Ebinger | Method for detecting metal objects and metal detector |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB994400A (en) | Apparatus for detecting and localizing extraneous objects of electrically conductingor magnetically permeable material in human or animal tissue | |
| GB1092362A (en) | Improvements in detectors for electrically conductive or magnetic particles | |
| GB1289455A (en) | ||
| GB839486A (en) | Method of and apparatus for locating anomalies in a well bore | |
| GB829371A (en) | Gyromagnetic resonance process analysis and control | |
| ES314388A1 (en) | An apparatus for measuring the quality of a cigarette manufacturing procedure. (Machine-translation by Google Translate, not legally binding) | |
| GB1292724A (en) | Magnetic gas analysis device | |
| GB968493A (en) | Particle analyzing device | |
| GB788432A (en) | Device for damping the oscillating elements of electromechanical apparatus | |
| SU115195A1 (en) | Apparatus for detecting metallic particles in tissue | |
| GB885025A (en) | Improvements in or relating to electromagnetic vibrators | |
| GB1082805A (en) | Improvements in or relating to the measurement of selective capacitivity related to characteristics of materials | |
| SU564615A1 (en) | Receiver for geoelectroprospecting | |
| GB870487A (en) | Flaw detecting device | |
| GB927907A (en) | Impedance gate | |
| SU124527A1 (en) | The method of automatic compensation of the action at a given point of the magnetic field of the source with a constant distribution of the vector of relative volume magnetization | |
| GB877011A (en) | Apparatus for use in a vibration testing system | |
| GB947260A (en) | Improvements in or relating to alternating current generators | |
| GB1056088A (en) | A method of and apparatus for measuring the vibratory damping of a body | |
| GB1331810A (en) | Mehtod and apparatus for measuring modules | |
| GB1068852A (en) | Improvements in and relating to electrical control devices | |
| GB797085A (en) | Improvements relating to electronic apparatus for detecting the presence of metal | |
| GB593377A (en) | Improvements in or relating to apparatus for detecting and/or locating by electricalmeans masses of electrically conducting or magnetic material | |
| GB637336A (en) | Improvements in or relating to apparatus for detecting and/or locating by electrical means masses of electrically conducting or magnetic material | |
| GB634576A (en) | Apparatus for measuring the gain factor or q of resonant electric systems |