Abstract: Described is a tracheostoma closure device which has a valve (18, 23) which can be actuated at will be breathing out, to permit the patient to speak. The arrangement has an open tube portion (10) which can be introduced into the stoma and from which extends a passage stump portion (7) which leads outwardly through the stoma and which on its front side carries a housing (9) for the valve. An adjustable flange ring (8) for sealing off the stoma is carried on the passage stump portion (7). The valve is formed by a non-return valve flap (18) which is mounted pivotally in the valve housing (9) and which opens in the direction of breathing in and closes in the direction of breathing out when a predetermined flow speed is exceeded.

Abstract: Described is an implantable device for selectively opening and closing tubular organs of the body such as the urethra. The device comprises a sleeve of an elastomeric plastic material, being of a stiff or rigid shape. The sleeve has a slit-like opening for receiving the organ, while the width of the opening is such that the organ is at least partially closed off in the rest condition of the device. Pressure can be applied manually, possibly by way of a remote operating means, to cause the opening to be temporarily enlarged whereby the organ which extends through the opening is also opened. The device may also have a continuously open position which is produced by means of a ball which can be displaced into a retaining seat to hold the opening of the device in an open position.