Body-implantable device for controlling the size of a fluid passageway
First Claim
1. A body implantable device made of a body compatible material for controlling the size of a fluid flow passageway within the body, which comprises:
- a housing;
means for securing said housing within the body;
a flow passageway of unchanging cross-section extending through said housing;
signal receiving means, responsive to electromagnetic signals emitted from outside the body and conveyed through the body without wires to said signal receiving means; and
means for changing the cross-section of said flow passageway to another position in a manner responsive to signals received by said signal receiving means.
1 Assignment
0 Petitions
Accused Products
Abstract
A body-implantable device for controlling the size of a fluid flow passageway within the body, typically for use in a Fenestrated Fontan operation. A housing is provided and secured within the body, typically to the artificial septum sutured into place in the Fontan operation. A flow passageway extends through the housing. An antenna is responsive to electromagnetic signals emitted from outside the body and conveyed through the body without wires to the antenna. Means are provided for varying the cross-section of the flow passageway in a manner responsive to signals received by the antenna.
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Citations
17 Claims
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1. A body implantable device made of a body compatible material for controlling the size of a fluid flow passageway within the body, which comprises:
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a housing; means for securing said housing within the body; a flow passageway of unchanging cross-section extending through said housing; signal receiving means, responsive to electromagnetic signals emitted from outside the body and conveyed through the body without wires to said signal receiving means; and means for changing the cross-section of said flow passageway to another position in a manner responsive to signals received by said signal receiving means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A body-implantable device made of a body compatible material for providing a fenestration in the Fontan operation for controlling the size of a fluid flow passageway through an artificial intra-atrial septum within the heart, which comprises:
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a housing; means for securing said housing to said septum; a flow passageway of unchanging cross-section extending through said housing; signal receiving means, responsive to electromagnetic signals emitted from outside the body and conveyed through the body without wires to said signal receiving means; and means for varying the cross-section of said flow passageway to another normally invariant position in a manner responsive to signals received by said signal receiving means, said means for varying the cross-section of said flow passageway comprising a blade capable of moving transversely across said flow passageway to vary said cross section. - View Dependent Claims (9, 10, 11, 12)
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13. A body implantable device of a body compatible material for controlling the size of a fluid flow passageway within the body, which comprises:
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a housing; means for securing said housing within the body, said securing means comprising a perforated flange for suturing to a septum; a flow passageway extending through said housing; signal receiving means, responsive to electromagnetic signals emitted from outside the body and conveyed through the body without wires to said signal receiving means; and means for varying the cross section of said flow passageway in a manner responsive to signals received by said signal receiving means. - View Dependent Claims (14, 15, 16, 17)
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Specification