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This specification covers the minimum safety and performance standards that a manufacturer should meet with regards to the design, manufacture, testing, labeling, and documentation of cranial traction tongs and halo external spinal immobilization devices intended for use on humans for therapeutic purposes. It is, however, not to be construed as production methods, quality control techniques, manufacturer's lot criteria, or clinical recommendations for such. Requirements to which the devices shall be tested on and conform accordingly to are magnetic resonance imaging (MRI) compatibility, mechanical integrity, design performance, induced current flow, and current induced heating.
This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.
1.1 This specification covers standards a manufacturer shall meet in the designing, manufacturing, testing, labeling, and documenting of halo and tong external spinal immobilization devices, but it is not to be construed as production methods, quality control techniques, manufacturer's lot criteria, or clinical recommendations.
1.2 This specification represents the best currently available test procedures at this time and is a minimum safety and performance standard.
1.3 This specification covers only those halo and tong devices intended for use on humans for therapeutic purposes. This specification assumes the user is well-trained in the procedures and maintenance of halo and tong application and has the ability to determine if an abnormality is treatable by these procedures.
1.4 This specification describes those devices commonly known as halo external fixation devices and what is known as cranial traction tongs.
1.5 Cranial traction tongs and halo devices are used to achieve and maintain optimal spinal alignment, in order to enhance fusion and decrease neurological deficit.
1.6 Monitoring the progress of treatment after application of these devices is important, this should be done in accordance with the manufacturer's recommendation and guidelines pertaining to the specific device.
1.7 The values stated in both inch-pound and SI units are to be regarded separately as the standard. The values given in parentheses are for information only.
1.8 The following precautionary statement pertains only to the test method portions, Sections : This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
F2052 Test Method for Measurement of Magnetically Induced Displacement Force on Medical Devices in the Magnetic Resonance Environment
F2119 Test Method for Evaluation of MR Image Artifacts from Passive Implants
F2182 Test Method for Measurement of Radio Frequency Induced Heating On or Near Passive Implants During Magnetic Resonance Imaging
F2213 Test Method for Measurement of Magnetically Induced Torque on Medical Devices in the Magnetic Resonance Environment
F2503 Practice for Marking Medical Devices and Other Items for Safety in the Magnetic Resonance Environment
IEC StandardIEC 601-1 Medical Electrical Equipment Available from American National Standards Institute (ANSI), 25 W. 43rd St., 4th Floor, New York, NY 10036, http://www.ansi.org.
ICS Number Code 11.040.40 (Implants for surgery, prothetics and orthotics)
UNSPSC Code 42294102(Surgical skull traction devices or related products)
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ASTM F1831-17, Standard Specification for Cranial Traction Tongs and Halo External Spinal Immobilization Devices, ASTM International, West Conshohocken, PA, 2017, www.astm.orgBack to Top