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Practical Characteristics of Metal Locators

Practical Characteristics of Metal Locators Abstract A new metal locator is described that is physically, rather than electrically, balanced. This eliminates some of the difficulties of using earlier equipment, which needs constant retuning. Because the new locator responds only to magnetic materials, it discriminates among foreign bodies, indicating those that can be extracted with a magnet. Of course, a metal locator should be used in conjunction with such other tools for management of an intraocular foreign body as roentgenograms and ultrasound. References 1. Smee A: On the detection of needles and other steel instruments impacted in the human body . Med Times 11:244, 1844. 2. Aveling JH: On the detection by the aid of magnetism of needles embedded near the surface of the body . Lancet 1:149, 1851.Crossref 3. Pooley T: On the detection of the presence and location of steel and iron foreign bodies in the eye by the indication of a magnetic needle . Arch Ophthal 9:255-271, 1880. 4. Pagenstecher H: Two cases of extraction of splinters of iron from the vitreous, with observations on the diagnosis and extraction of steel and iron particles by means of the magnet . Arch Ophthal 10:145-151, 1881. 5. Asmus E: Das Sideroskop: Ein apparat zum Nachweis der Eisen-und Stahlsplitter im Innern des Auges . Graefes Arch Ophthal 40:280-325, 1894.Crossref 6. Von Comberg W: Lokalisation und Unterscheidung von Metallsplittern im menschlichen Körper nach einem neuen Verfahren mit Hilfe eines Verstärkergerätes . Munchen Med Wschr 80:1783-1785, 1933. 7. Anonymous: A German way of detecting metallic foreign bodies: Annotations . Lancet 1:699, 1941. 8. Farmer FT, Osborn SB: Location of foreign bodies by a radio frequency probe . Lancet 2:517-518, 1941.Crossref 9. Moorhead JJ: A foreign body finder: The locator . JAMA 121:123-125, 1943.Crossref 10. Minsky H: Transscleral removal of intraocular foreign body with the aid of the Berman locator . Arch Ophthal 31:207-210, 1944.Crossref 11. Guy LP: Use of Berman locator in removal of magnetic intraocular foreign bodies . Arch Ophthal 36:540-550, 1946.Crossref 12. Haik GM: Intraocular foreign bodies . JAMA 135:894-900, 1947.Crossref 13. Roper-Hall MJ: An intraocular foreign body locator . Trans Ophthal Soc UK 77:239-249, 1957. 14. Riise D: Electro-magnetic localization of intraocular foreign bodies with the "Beolocator." Acta Ophthal 44:80-83, 1966.Crossref 15. Wildgen BC, Reck DF: Wildgen-Reck locator . Trans Amer Acad Ophthal Otolaryng 68:912-913, 1964. 16. Bronson NR, Turner FT: A new metal locator . Trans Amer Acad Ophthal Otolaryng 74:830-831, 1970. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Ophthalmology American Medical Association

Practical Characteristics of Metal Locators

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Publisher
American Medical Association
Copyright
Copyright © 1972 American Medical Association. All Rights Reserved.
ISSN
0003-9950
eISSN
1538-3687
DOI
10.1001/archopht.1972.01000030201013
Publisher site
See Article on Publisher Site

Abstract

Abstract A new metal locator is described that is physically, rather than electrically, balanced. This eliminates some of the difficulties of using earlier equipment, which needs constant retuning. Because the new locator responds only to magnetic materials, it discriminates among foreign bodies, indicating those that can be extracted with a magnet. Of course, a metal locator should be used in conjunction with such other tools for management of an intraocular foreign body as roentgenograms and ultrasound. References 1. Smee A: On the detection of needles and other steel instruments impacted in the human body . Med Times 11:244, 1844. 2. Aveling JH: On the detection by the aid of magnetism of needles embedded near the surface of the body . Lancet 1:149, 1851.Crossref 3. Pooley T: On the detection of the presence and location of steel and iron foreign bodies in the eye by the indication of a magnetic needle . Arch Ophthal 9:255-271, 1880. 4. Pagenstecher H: Two cases of extraction of splinters of iron from the vitreous, with observations on the diagnosis and extraction of steel and iron particles by means of the magnet . Arch Ophthal 10:145-151, 1881. 5. Asmus E: Das Sideroskop: Ein apparat zum Nachweis der Eisen-und Stahlsplitter im Innern des Auges . Graefes Arch Ophthal 40:280-325, 1894.Crossref 6. Von Comberg W: Lokalisation und Unterscheidung von Metallsplittern im menschlichen Körper nach einem neuen Verfahren mit Hilfe eines Verstärkergerätes . Munchen Med Wschr 80:1783-1785, 1933. 7. Anonymous: A German way of detecting metallic foreign bodies: Annotations . Lancet 1:699, 1941. 8. Farmer FT, Osborn SB: Location of foreign bodies by a radio frequency probe . Lancet 2:517-518, 1941.Crossref 9. Moorhead JJ: A foreign body finder: The locator . JAMA 121:123-125, 1943.Crossref 10. Minsky H: Transscleral removal of intraocular foreign body with the aid of the Berman locator . Arch Ophthal 31:207-210, 1944.Crossref 11. Guy LP: Use of Berman locator in removal of magnetic intraocular foreign bodies . Arch Ophthal 36:540-550, 1946.Crossref 12. Haik GM: Intraocular foreign bodies . JAMA 135:894-900, 1947.Crossref 13. Roper-Hall MJ: An intraocular foreign body locator . Trans Ophthal Soc UK 77:239-249, 1957. 14. Riise D: Electro-magnetic localization of intraocular foreign bodies with the "Beolocator." Acta Ophthal 44:80-83, 1966.Crossref 15. Wildgen BC, Reck DF: Wildgen-Reck locator . Trans Amer Acad Ophthal Otolaryng 68:912-913, 1964. 16. Bronson NR, Turner FT: A new metal locator . Trans Amer Acad Ophthal Otolaryng 74:830-831, 1970.

Journal

Archives of OphthalmologyAmerican Medical Association

Published: Aug 1, 1972

References

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