US4994019A — Magnetic occluding device

Claim 1

Independent Claim 174 words

A magnetic occluding device for a conduit in a body comprising: first and second assembles, said assemblies including means for mounting the assemblies on opposite sides of a bodily conduit; at least a first of said assemblies including magnet means having a pair of poles that are spaced apart in a reference direction passing through the poles, said magnet means being movably mounted on the first assembly for movement between first and second positions, the reference direction of the poles being substantially transverse to the conduit in one of said positions; a second of said assemblies including means that are magnetically attracted to the poles of the magnet means in a first position of the magnet means the magnet attraction between the two assemblies is substantially reduced to permit a bodily conduit placed between the assemblies to expand, the magnet means being movable between the first and second positions in a direction parallel to a plane defined by the second assembly; and means for actuating the magnet means between the first and second positions.

Claim 2

Dependent Claim 174 words

A magnetic occluding device for a conduit in a body comprising: first and second assembles, said assemblies including means for mounting the assemblies on opposite sides of a bodily conduit; at least a first of said assemblies including magnet means having a pair of poles that are spaced apart in a reference direction passing through the poles, said magnet means being movably mounted on the first assembly for movement between first and second positions, the reference direction of the poles being substantially transverse to the conduit in one of said positions; a second of said assemblies including means that are magnetically attracted to the poles of the magnet means in a first position of the magnet means the magnet attraction between the two assemblies is substantially reduced to permit a bodily conduit placed between the assemblies to expand, the magnet means being movable between the first and second positions in a direction parallel to a plane defined by the second assembly; and means for actuating the magnet means between the first and second positions.

Claim 3

Dependent Claim 61 words

The apparatus as specified in claim 1 wherein the means for actuating comprises a fluid pressure actuator coupled to the magnet means, and a reservoir for containing fluid fluidly connected to the actuator and which can be subjected to pressure to move the actuator, whereby upon pressure being applied to said reservoir, the magnet means is moved to its second position.

Claim 4

Dependent Claim 26 words

The apparatus as specified in claim 2 wherein both of said assemblies include permanent magnet means, and at least one of said magnet means being movable.

Claim 5

Dependent Claim 53 words

A magnetic occluding device according to claim 1 wherein said magnet means is rotatably mounted on one of the first and second assemblies for actuation about a rotational axis, the magnetic poles being movable substantially 90° about the rotational axis of the magnet means to vary the magnetic attraction between the two assemblies.

Claim 6

Dependent Claim 136 words

A magnetic occluding device for a bodily conduit comprising a totally implantable member having first and second housings; means for supporting said first and second housings on opposite sides of a bodily conduit, said first housing having first magnet means therein; means forming a part of the second housing to provide for attraction of the first magnet means toward the second housing, said means to provide attraction having regions of greater and less magnetically attractive capabilities for the first magnet means, whereby in the first position of the first magnet means the conduit between the assemblies is collapsed to be closed, and in the second position of said first magnet means, the magnetic force reduces sufficiently to permit the conduit to open; and means for moving the first magnet means between its first and second postions.

Claim 7

Dependent Claim 136 words

A magnetic occluding device for a bodily conduit comprising a totally implantable member having first and second housings; means for supporting said first and second housings on opposite sides of a bodily conduit, said first housing having first magnet means therein; means forming a part of the second housing to provide for attraction of the first magnet means toward the second housing, said means to provide attraction having regions of greater and less magnetically attractive capabilities for the first magnet means, whereby in the first position of the first magnet means the conduit between the assemblies is collapsed to be closed, and in the second position of said first magnet means, the magnetic force reduces sufficiently to permit the conduit to open; and means for moving the first magnet means between its first and second postions.

Claim 8

Dependent Claim 41 words

The apparatus as specified in claim 5 wherein said first magnet means is rotatably mounted with respect to the second housing to shift the position of the magnetic poles thereon to control the magnetic force with respect to the second housing.

Claim 9

Dependent Claim 48 words

The apparatus as specified in claim 5 wherein said first magnet means is movable laterally with respect to a longitudinal axis of the conduit with which the housings are associated, wherein the magnetic poles of the first magnet means are changed in position upon laterally linear sliding movement.

Claim 10

Dependent Claim 83 words

The apparatus as specified in claim 5 wherein the second of the housings includes a second magnet means, the second magnet comprising the means for providing attraction for the first magnet, the first and second magnet means having poles that are generally aligned across the conduit in a first position of the first magnet means, and wherein the magnetic poles of the first and second magnets are offset sufficiently to reduce the magnetic force with the first magnet means in its second position.

Claim 11

Dependent Claim 56 words

The apparatus of claim 8 wherein the housings are implantable in the body, and actuator means for moving the first magnet means between its respective positions, said actuator means being totally implantable in a body and having means manually operable from the exterior of the body for moving the first magnet means to its second position.

Claim 12

Dependent Claim 19 words

The apparatus of claim 9 wherein the first magnet means is rotatably mounted with respect to the second housing.

Claim 13

Dependent Claim 297 words

A magnetic occluding device for a bodily conduit comprising a totally implantable member having first and second housings; means for supporting said first and second housings on opposite sides of a bodily conduit, the first housing having first magnet means therein; means forming a part of the second housing to provide for attraction of the first magnet means toward the second housing, said means to provide attraction having regions of greater and less magnetically attractive capabilities for the first magnet means, whereby in a first position of the first magnet means the conduit between the assemblies is collapsed to be closed, and in a second position of said first magnet means, the magnetic force reduces sufficiently to permit the conduit to open; said housings comprising interchangeable substantially identical housing members that are reversed and inverted when placed on opposite sides of the conduit, each of said housing members each having a central pad and a pair of spaced apart legs on one end of the pad, and a single leg on an opposite side of the pad, the single leg of each housing member interfitting between the pair of legs from the other housing member, the interfitting legs being oriented on each of opposite lateral sides of the conduit when placed on a conduit; and pin means for holding the respective interfitting single legs and the associated pair of legs together whereby the legs can permit the housing members to span the conduit on which they are placed and to be able to move apart, the first magnet means and the means for providing attraction being mounted on the pads of the respective first and second housing members and being aligned with the conduit on opposite sides thereof when the housing members are placed on a conduit.

Claim 14

Dependent Claim 297 words

A magnetic occluding device for a bodily conduit comprising a totally implantable member having first and second housings; means for supporting said first and second housings on opposite sides of a bodily conduit, the first housing having first magnet means therein; means forming a part of the second housing to provide for attraction of the first magnet means toward the second housing, said means to provide attraction having regions of greater and less magnetically attractive capabilities for the first magnet means, whereby in a first position of the first magnet means the conduit between the assemblies is collapsed to be closed, and in a second position of said first magnet means, the magnetic force reduces sufficiently to permit the conduit to open; said housings comprising interchangeable substantially identical housing members that are reversed and inverted when placed on opposite sides of the conduit, each of said housing members each having a central pad and a pair of spaced apart legs on one end of the pad, and a single leg on an opposite side of the pad, the single leg of each housing member interfitting between the pair of legs from the other housing member, the interfitting legs being oriented on each of opposite lateral sides of the conduit when placed on a conduit; and pin means for holding the respective interfitting single legs and the associated pair of legs together whereby the legs can permit the housing members to span the conduit on which they are placed and to be able to move apart, the first magnet means and the means for providing attraction being mounted on the pads of the respective first and second housing members and being aligned with the conduit on opposite sides thereof when the housing members are placed on a conduit.

Claim 15

Dependent Claim 48 words

The apparatus as specified in claim 11 and means for spacing the magnet means of the housing members a different distance apart when the conduit is collapsed, comprising removable spacer means for positioning between the housing pads and the conduit to vary the spacings of the magnet means.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1994-02-18	1994-08-20	1995-02-19	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1998-02-18	1998-08-20	1999-02-19	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2002-02-18	2002-08-20	2003-02-19	$7700.00	Window Closed / Lapsed

Magnetic occluding device

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