ACTUATION SYSTEM AND METHOD FOR ORTHOPEDIC IMPLANTS WITH A ROTATABLE INTERNAL MAGNET
First Claim
1. An external magnetic actuator for actuating an implanted or implantable medical device that includes a rotatable internal magnet for driving translation between first and second components of the implanted or implantable medical device, the external magnetic actuator comprising:
- a permanent magnet having a first major surface, a second major surface opposite the first major surface, and a plurality of minor surfaces extending between and perpendicular to the first and second major surfaces, the first and second major surfaces each having an individual surface area, the plurality of minor surfaces each having an individual surface area, the individual surface area of the first and second major surfaces being greater than the individual surface area of each of the minor surfaces, the permanent magnet including a first pole on the first major surface, and a second pole on the second major surface;
an actuator body including a housing having a first wall, a second wall opposite the first wall, a plurality of side walls extending between and perpendicular to the first and second walls, and a cavity for receiving the permanent magnet therein;
a first handle coupled to a first side wall of the plurality of side walls; and
a second handle coupled to a second side wall of the plurality of side walls, the second side wall being opposite to the first side wall.
1 Assignment
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Accused Products
Abstract
An external magnetic actuator for use in adjusting an implantable medical device having a magnetically actuatable rotatable portion, such as an intramedullary (EVI) lengthening nail is disclosed. The actuator may include a magnet having opposite major surfaces representing opposite poles of the magnet. The magnet may be contained within an actuator body having first and second handles coupled to first and second opposing side walls of the housing. The actuator body may also include one or more projections operable to prevent first and/or second walls of the actuator body from lying flat against an external planar surface. Also provided are various kits and systems that include a disclosed external magnetic actuator and methods for using the disclosed external magnetic actuator.
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Citations
11 Claims
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1. An external magnetic actuator for actuating an implanted or implantable medical device that includes a rotatable internal magnet for driving translation between first and second components of the implanted or implantable medical device, the external magnetic actuator comprising:
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a permanent magnet having a first major surface, a second major surface opposite the first major surface, and a plurality of minor surfaces extending between and perpendicular to the first and second major surfaces, the first and second major surfaces each having an individual surface area, the plurality of minor surfaces each having an individual surface area, the individual surface area of the first and second major surfaces being greater than the individual surface area of each of the minor surfaces, the permanent magnet including a first pole on the first major surface, and a second pole on the second major surface; an actuator body including a housing having a first wall, a second wall opposite the first wall, a plurality of side walls extending between and perpendicular to the first and second walls, and a cavity for receiving the permanent magnet therein; a first handle coupled to a first side wall of the plurality of side walls; and a second handle coupled to a second side wall of the plurality of side walls, the second side wall being opposite to the first side wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification