Magnetic resonance imaging (MRI) safe remotely adjustable artificial sphincter
First Claim
1. An apparatus, comprising an external programmer portion at least intermittently in communication with an implantable artificial sphincter portion for remote adjustment thereof, the implantable artificial sphincter portion comprising:
- an artificial sphincter band formed of biocompatible and nonferromagnetic material sized to encompass a body lumen;
control circuitry responsive to the external programmer portion;
an MRI safe actuator activated by the control circuitry to selectively, bi-directionally adjust the artificial sphincter;
a power source providing power to the control circuitry and to the actuator.
1 Assignment
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Accused Products
Abstract
An implantable artificial sphincter system provides long-term adjustment via transcutaneous energy transfer (TET), minimizing invasive adjustment through adding or removing fluid via a syringe. An infuser device provides bi-directional fluid transfer via a flexible conduit to a sphincter band, such as a gastric band. Materials are nonferrous and nonmagnetic so as to be magnetic resonance imaging (MRI) safe, being substantially immune to strong magnetic fields and not introducing an electromagnetic interference/compatibility (EMIC) hazard.
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Citations
23 Claims
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1. An apparatus, comprising an external programmer portion at least intermittently in communication with an implantable artificial sphincter portion for remote adjustment thereof, the implantable artificial sphincter portion comprising:
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an artificial sphincter band formed of biocompatible and nonferromagnetic material sized to encompass a body lumen;
control circuitry responsive to the external programmer portion;
an MRI safe actuator activated by the control circuitry to selectively, bi-directionally adjust the artificial sphincter;
a power source providing power to the control circuitry and to the actuator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An apparatus, comprising an external programmer portion at least intermittently in communication with an implantable artificial sphincter portion for remote adjustment thereof, the implantable artificial sphincter portion comprising:
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an artificial sphincter band formed of biocompatible and nonferromagnetic material sized to encompass a body lumen;
control circuitry responsive to the external programmer portion;
an MRI safe piezoelectric motor activated by the control circuitry to selectively bi-directionally adjust the artificial sphincter band;
a power source providing power to the control circuitry and to the actuator. - View Dependent Claims (12, 13, 14)
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15. An apparatus, comprising an external programmer portion at least intermittently in communication with an implantable artificial sphincter portion for remote adjustment thereof, the implantable artificial sphincter portion comprising:
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an artificial sphincter band formed of biocompatible and nonferromagnetic material sized to encompass a body lumen and including an adjustable inner circumference;
a transmission operatively configured to convert an actuator motion to an adjustment of the inner circumference of the artificial sphincter band;
control circuitry responsive to the external programmer portion;
an MRI safe actuator operatively configured to produce the actuator motion coupled to the transmission and activated by the control circuitry to selectively, bi-directionally adjust the artificial sphincter;
a power source providing power to the control circuitry and to the actuator. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification