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US 2004/0167506 A1Published application
Medical devices employing ferromagnetic heating
AssigneeSciMed Life Systems, Inc.
InventorJohn J. Chen
Life of this patent
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Abstract
Ferromagnetic heating can be employed in medical devices such as catheters. Catheters bearing ferromagnetic materials can be used to provide localized and directed heating to a treatment site such as an intravascular treatment site. In particular, a balloon catheter can be positioned proximate an intravascular treatment and can be heated by applying an alternating magnetic field.
Claims27
A thermal treatment catheter comprising:
- an elongate shaft having a proximal portion and a distal portion;
- and
- a ferromagnetic material disposed within the distal portion of the catheter.
A balloon catheter comprising:
- an elongate shaft having a proximal end and a distal end;
- and
- an inflatable balloon arranged near the distal end of the elongate shaft;
- wherein the catheter comprises a ferromagnetic material.
1 more element
A thermal treatment method comprising:
- providing a thermal treatment catheter comprising an elongate shaft having a distal end and a proximal end, and a ferromagnetic heat source positioned near the distal end of the elongate shaft;
- positioning the thermal treatment catheter such that the ferromagnetic heat source is proximate a treatment site;
- and
- applying an alternating magnetic field to activate the ferromagnetic heat source, thereby applying heat to the treatment site.
1 more element
Dependencies are inferred from the claim text.