A - Human Necessities – 61 – M
Patent
A - Human Necessities
61
M
128/127
A61M 25/00 (2006.01) A61B 1/00 (2006.01) A61B 1/005 (2006.01) A61M 25/01 (2006.01) H01H 37/32 (2006.01) H01H 37/50 (2006.01)
Patent
CA 1254473
Abstract of the Disclosure A catheter or the like is steerable through cavities within a body and aimable toward organs or tissue within the body. The catheter includes an elongated tubular member having a proximal end and a distal end for insertion into the body, a plurality of temperature-activated memory elements in the distal end of the tubular member, and a core for supporting the memory elements. Each memory element assumes a first shape when heated to a predetermined temperature. A sleeve is provided to couple slidably each memory element to the core so that each memory element is permitted to slip in relation to the core and also to couple each memory element so that movement of one element results in movement of the other elements. Each memory element is moved to a second shape when the memory element coupled thereto is heated to the predetermined temperature. A control system adjacent the proximal end of the tubular member allows an operator to control selectively the temperature of each temperature-activated element to deflect the distal end of the tubular member so as to either direct the course of the tubular member or to direct the distal end of the tubular member toward an organ or tissue within the body.
483624
Mccoy William C.
Smart & Biggar
LandOfFree
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