DEVICE FOR ENHANCING INDUCED MAGNETIC FIELD CONSEQUENT FOR THERMAL ABLATION THERAPY |
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申请号 | US14586024 | 申请日 | 2014-12-30 | 公开(公告)号 | US20160184002A1 | 公开(公告)日 | 2016-06-30 |
申请人 | METAL INDUSTRIES RESEARCH AND DEVELOPMENT CENTRE; | 发明人 | Tung-Chieh YANG; Tsung-Chih YU; Yi-San CHANG; Xi-Zhang LIN; Syuan-Fong CHEN; Guan-Cheng CHEN; | ||||
摘要 | A device for enhancing induced magnetic field consequent for thermal ablation therapy includes a magnetic field generating unit, an annular support and a magnetic ring. The annular support is non-magnetic and non-electrically-conductive, and has two annular end faces and annular outer and inner walls. The magnetic field generating unit is fixed around and contacts the annular outer wall. The magnetic ring is magnetic, has a ring body confining a ring opening, fixed to one of the annular inner wall and the annular end faces, and extending around a common axial line that extends through the annular inner wall. The ring opening is smaller than the annular inner wall in dimension on a plane perpendicular to the common axial line. | ||||||
权利要求 | What is claimed is: |
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说明书全文 | The disclosure relates to a device for enhancing induced magnetic field consequent for thermal ablation therapy. Recently, there is a new technology adapted for tumor treatment that can save costs for patients and reduce the pain inflicted by the operation. A thermal ablation therapy is to apply an alternating magnetic field on a magnetizable needle, heat the needle with energy from eddy currents generated by the alternating magnetic field, then use the heated needle to ablate a tumor. Referring to However, the alternating magnetic field generated by the deep magnetic field generating apparatus 1 may diffuse before reaching the magnetizable needle 2, which may affect production of heat energy to the magnetizable needle 2 for the ablation of the tumor 31. Therefore, the object of the present disclosure is to provide a device for enhancing induced magnetic field consequent for thermal ablation therapy that can induce a focusing of the alternating magnetic field. Accordingly, a device for enhancing induced magnetic field consequent for thermal ablation therapy includes a magnetic field generating unit, an annular support, and a magnetic ring. The magnetic field generating unit has a coiled portion and two connection portions. The coiled portion has two ends that are respectively connected to the connection portions which are connectible to an alternating electric power source to generate a magnetic field. The annular support is made of a non-magnetic and non-electrically-conductive material, and has an annular outer wall, an annular inner wall that is formed within the annular outer wall, a first annular end face, and a second annular end face. Each of the annular outer and inner walls is connected between the first and second annular end faces. The coiled portion of the magnetic field generating unit is fixed around and contacts the annular outer wall. The magnetic ring is made of a magnetic material and has a ring body that confines a ring opening. The ring body is fixed to one of the annular inner wall, and the first and second annular end faces. The ring body extends around a common axial line that extends through the annular inner wall. The ring opening is smaller than the annular inner wall in dimension on a plane perpendicular to the common axial line. Other features and advantages of the present disclosure will become apparent in the following detailed description of the embodiments with reference to the accompanying drawings, of which: Referring to The magnetic field generating unit 4 has a coiled portion 41 which is made of an electrically-conductive material and formed in C-shape, and two connection portions 42. The coiled portion 41 has two ends 411 that are respectively connected to the connection portions 42 which are connectible to an alternating electric power source (not shown) to generate a magnetic field, more specifically an alternating magnetic field due to the alternating currents from the alternating electric power source. It should be noted that the shape of the coiled portion 41 is not limited by this embodiment, and may also be formed to be U-shaped, rectangular or any other shape as long as a stream of the magnetic field can be formed. The annular support 5 is made of a non-magnetic and non-electrically-conductive material. The annular support 5 has an annular outer wall 51, an annular inner wall 52 that is formed within the annular outer wall 51, a first annular end face 53, and a second annular end face 54. Each of the annular outer and inner walls 51, 52 are connected between the first and second annular end faces 53, 54. The magnetic ring 6 is made of a magnetic material, which may preferably be selected from an iron, an iron oxide and a carbon steel. The magnetic ring 6 has a ring body 61 that confines a ring opening 62. The ring body 61 extends around a common axial line (L) that extends through the annular inner wall 52. The ring opening 62 is smaller than the annular inner wall 52 in dimension on a plane perpendicular to the common axial line (L). The coiled portion 412 is fixed fittingly around and contacts the annular outer wall 51. Referring to The annular inner wall 52 of the annular support 5 is fixed fittingly around and contacts the ring body 61 of the magnetic ring 6. In this embodiment, the annular inner wall 52 is formed with an annular inner groove 521, and the ring body 61 is formed with an annular outer rib 611 interlocking with the annular inner groove 521. It should be noted that the relationship between the annular inner wall 52 and the ring body 61 is not limited by this embodiment. For example, the ring body 61 may be formed with an annular groove, and the annular inner wall 52 may be formed with an annular rib interlocking with the annular groove. Referring to Referring to Referring to Referring to To summarize the description above, by virtue of the magnetic ring 6, the device for enhancing induced magnetic field consequent for thermal ablation therapy according to the disclosure can improve the concentration of the alternating magnetic field generated by the magnetic field generating unit 4 to increase the efficiency of producing heat energy to the auxiliary treatment tool 7 for ablating the tumor 82 inside of the human body. Furthermore, the presence of the screen holes 91 would facilitate precise penetration of the auxiliary treatment tool 7 (see While the present invention has been described in connection with what are considered the most practical embodiments, it is understood that this invention is not limited to the disclosed embodiments but is intended to cover various arrangements included within the spirit and scope of the broadest interpretation so as to encompass all such modifications and equivalent arrangements. |