An implantable prosthetic device comprising: an inner chamber; an outer chamber fluidly isolated from the inner chamber; and a sealing valve movable between an open state and a closed state in fluid communication with the inner chamber and the outer chamber, the sealing valve characterized by: a first sealing mechanism comprising a fill tube with a fill tube aperture extending through a valve into the inner chamber; a second sealing mechanism comprising a fill channel and one or more fill channel apertures to provide fluid communication between fill channel and outer chamber, and a stopper element, the stopper element being slidable within the fill channel between an open state and a closed state, wherein the stopper element moves the fill tube; a spring element for applying force to the stopper element to slide the stopper element into the closed state; wherein when the sealing valve is in the open state, the fill tube is moved through valve until aperture passes out of valve into inner chamber to allow the inflow of a first material into the inner chamber and the stopper element is moved so that the fill channel aperture of the second sealing mechanism is unblocked to allow the inflow of a second material into the outer chamber; wherein when the sealing valve is in the closed state, the fill tube aperture of the first sealing mechanism is blocked to prevent outflow of the first material from within the inner chamber and the stopper element blocks the fill channel aperture of the second sealing mechanism to prevent outflow of the second material from within the outer chamber; wherein a force applied to the stopper causes the sealing valve to enter the open state; and; wherein the release of the force causes the sealing valve to enter the closed state. an inner chamber; an outer chamber fluidly isolated from the inner chamber; and a sealing valve movable between an open state and a closed state in fluid communication with the inner chamber and the outer chamber, the sealing valve characterized by: a first sealing mechanism comprising a fill tube with a fill tube aperture extending through a valve into the inner chamber; a second sealing mechanism comprising a fill channel and one or more fill channel apertures to provide fluid communication between fill channel and outer chamber, and a stopper element, the stopper element being slidable within the fill channel between an open state and a closed state, wherein the stopper element moves the fill tube; a spring element for applying force to the stopper element to slide the stopper element into the closed state; wherein when the sealing valve is in the open state, the fill tube is moved through valve until aperture passes out of valve into inner chamber to allow the inflow of a first material into the inner chamber and the stopper element is moved so that the fill channel aperture of the second sealing mechanism is unblocked to allow the inflow of a second material into the outer chamber; wherein when the sealing valve is in the closed state, the fill tube aperture of the first sealing mechanism is blocked to prevent outflow of the first material from within the inner chamber and the stopper element blocks the fill channel aperture of the second sealing mechanism to prevent outflow of the second material from within the outer chamber; a first sealing mechanism comprising a fill tube with a fill tube aperture extending through a valve into the inner chamber; a second sealing mechanism comprising a fill channel and one or more fill channel apertures to provide fluid communication between fill channel and outer chamber, and a stopper element, the stopper element being slidable within the fill channel between an open state and a closed state, wherein the stopper element moves the fill tube; a spring element for applying force to the stopper element to slide the stopper element into the closed state; wherein when the sealing valve is in the open state, the fill tube is moved through valve until aperture passes out of valve into inner chamber to allow the inflow of a first material into the inner chamber and the stopper element is moved so that the fill channel aperture of the second sealing mechanism is unblocked to allow the inflow of a second material into the outer chamber; wherein when the sealing valve is in the closed state, the fill tube aperture of the first sealing mechanism is blocked to prevent outflow of the first material from within the inner chamber and the stopper element blocks the fill channel aperture of the second sealing mechanism to prevent outflow of the second material from within the outer chamber; wherein a force applied to the stopper causes the sealing valve to enter the open state; and; wherein the release of the force causes the sealing valve to enter the closed state.