Methods, apparatuses, and systems for inductive heating of foreign metallic implants
A technology of foreign metals and implants, applied in the direction of joint implants, joint implants, heating appliances for treatment, etc., can solve the problems of a large number of resources, treatment is not completely effective, etc.
Active Publication Date: 2019-05-24
BOARD OF RGT THE UNIV OF TEXAS SYST
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However, these treatments may not be fully effective and may require significant resources
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[0040] The embodiments described below describe systems, devices, and methods for treating biofilms on the surface of foreign metal implants located within the body. In some embodiments, foreign metal implants may include prosthetic joints, various prosthetic implants such as pins, screws, rods, clamps, or foreign objects such as shrapnel. In some embodiments, the method may include using an alternating magnetic field (AMF) generated from a conductor outside the body such that sufficient magnetic flux passes through the implant within the body to generate one or more magnetic fields on the surface of the implant. a surface vortex. In some embodiments, the implant may be ferromagnetic. In these cases, additional heating caused by hysteresis may also occur. In the described embodiments, the implant may have a conductivity that allows one or more surface eddy currents, as may typically be encountered in metal implants. The heating produced by direct eddy current heating can ac...
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Methods, apparatuses, systems, and implementations for inductive heating of a foreign metallic implant are disclosed. A foreign metallic implant may be heated via AMF pulses to ensure that the surfaceof the foreign metallic implant heats in a uniform manner. As the surface temperature of the foreign metallic implant rises, acoustic signatures may be detected by acoustic sensors that may indicatethat tissue may be heating to an undesirable level approaching a boiling point. Once these acoustic signatures are detected, the AMF pulses may be shut off for a time period to allow the surface temperature of the implant to cool before applying additional AMF pulses. In this manner, the surface temperature of a foreign metallic implant may be uniformly heated to a temperature adequate to treat bacterial biofilm buildup on the surface of the foreign metallic implant without damaging surrounding tissue. The AMF pulse treatment can be combined with an antibacterial / antimicrobial treatment regimen to reduce the time and / or antibacterial dosage amount needed to remove the biofilm from the metallic implant.
Description
[0001] Cross References to Related Applications [0002] This application claims priority to U.S. Provisional Patent Application No. 62 / 362,402, filed July 14, 2016, and U.S. Provisional Patent Application No. 62 / 445,963, filed January 13, 2017. The entire contents of both are expressly incorporated herein by reference in their entirety, without disclaimer. [0003] background technical field [0004] The present disclosure generally relates to methods, devices, and systems for inductively heating foreign metal implants to heat biofilms. Background technique [0005] Prosthetic joint replacement has become an effective and widespread medical treatment modality for aging and damaged joints. However, prosthetic joints may be susceptible to infection due to the accumulation of bacterial biofilm on the joint. It is estimated that 1% to 5% of prosthetic joint replacement patients suffer from these types of infections. Current methods of treating these infections include addit...
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IPC IPC(8): A61B5/00A61B17/22A61F2/02A61M37/00A61N1/378A61N1/40A61N2/00
CPCA61N2/02A61B5/01A61B5/412A61B5/4528A61F2/30A61F2002/30668A61F2002/30677A61B5/0071A61B5/4836A61B5/4851A61F2002/30719A61F2002/30932A61F2002/30289A61N1/403A61L2/0023A61L2/04A61F2007/009A61L2202/21A61L2202/14A61F2007/0042A61F7/007A61N1/378A61N1/406A61F2002/30092A61N1/40A61B8/0841A61N1/025
Inventor 拉吉夫·乔普拉大卫·格林伯格约纳坦·夏齐斯诺夫
Owner BOARD OF RGT THE UNIV OF TEXAS SYST