Vessel occlusive device and method of occluding a vessel

摘要

An implantable vessel occlusive device and method for occluding a vessel are described, for example to occlude the urethra or bladder neck. The devices and methods described utilize an occlusive member connected to a control mechanism. The occlusive member is reversibly changed from a non-occlusive condition to an occlusive condition, for example by depressing an activation button contained within a resilient, elastomeric cover surrounding the control mechanism. In the occlusive position, an initial tension is applied to the occlusive member through a tensioning suture. The tension is translated into an occlusive pressure applied to the urethra or bladder neck that is sufficient to prevent urinary leakage. The non-occlusive position can be obtained by depressing the de-activation button. The occlusive member is constructed to allow elution of drugs, such as may be required to combat infection or tissue encapsulation from its surface.

主权项

1. An implantable apparatus for occluding a fluid conveying body vessel comprising:
an outer sheath having an internal space that is configured to retain a liquid, the outer sheath being water tight and having a first end and a second end, at least a portion of the outer sheath configured to at least partially encircle the fluid conveying body vessel; an inner occlusive tape disposed through the inner space, the inner occlusive tape having a first end and a second end, wherein the first end of the inner occlusive tape is fixed to the first end of the outer sheath, the second end of the inner occlusive tape is movable relative to the outer sheath, and the inner occlusive tape having a rectangular cross-section with a varied width from the first end to the second end of the inner occlusive tape; and a control mechanism connected to the second end of the inner occlusive tape, the control mechanism having an activated state and a deactivated state, wherein in the activated state the control mechanism applies a tension to the inner occlusive tape so that the inner occlusive tape applies a pressure to the portion of the outer sheath encircling the fluid conveying body vessel, and when the inner occlusive tape is adjusted to encircle the fluid conveying body vessel, the varied width of the inner occlusive tape is configured to increase or decrease the pressure on the fluid conveying body vessel, and in the deactivated state the control mechanism releases the tension from the inner occlusive tape so that the inner occlusive tape releases the pressure from the portion of the outer sheath encircling the fluid conveying body vessel.