Surgically-implantable device susceptible of noninvasive...

Details Surgically-implantable device susceptible of noninvasive... Surgically-implantable device susceptible of noninvasive...

A - Human Necessities

61

M

326/2, 128/80

A61M 5/00 (2006.01) A61F 2/00 (2006.01) A61F 2/02 (2006.01) A61M 27/00 (2006.01) H02K 7/065 (2006.01) H02K 37/00 (2006.01) H02K 37/14 (2006.01)

Patent

CA 1241246

SURGICALLY-IMPLANTABLE DEVICE SUSCEPTIBLE OF NONINVASIVE MAGNETIC ADJUSTMENT Abstract of the Disclosure A surgically-implantable device having a stepping motor that can be isolated physically from electrical power sources and powered by the influence of a magnetic field applied from outside the body, the stepping motor including a rotor and one or more stator elements, the stator elements being composed of magnetically soft and permeable material shaped and positioned with respect to the rotor so that when magnetized under the influence of the external field the stator elements strengthen and orient the magnetic field in their vicinities so as to cause movement of the rotor. The stepping motor may he used in a surgically-implantable shunt valve in which the popping pressure is adjusted in finite increments by application of the external magnetic field.

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