Abstract: A device for controlling the flow of a fluid, more especially a biological fluid and in particular the urinary flow, said device including a rod which, in the rest condition is sealingly clamped, by any appropriate clamping mechanism, inside a connecting tube, which is made from a flexible plastic material presenting shrinkage on polymerization, and a mechanism which is adapted to prevent the axial movement of the said valve rod along the connecting tube under the effect of the pressure of a fluid filling two flexible activating bags connected through the connecting tube, which may cooperate with a third flexible bag.

Abstract: The implantable device for the repeated injection of medicament (20) in unitary does in at a frequency which is a function of the therapeutical treatment needs comprises essentially: a flexible reservoir (6) for the storage of the medicament. A first flexible connection tube (7) connecting the reservoir to an injection site (5) a small flexible balloon for the predosing and controlling of the injection of the medicament, a second flexible connection tube (9) connecting the small balloon (10) and the reservoir (6), a valve fitted with valve means (16) of the type responsive only to the pressure exerted to small balloon means (11) for controlling the flow rate for filling the small balloon (10), and provided on said second connection tube (9), a non-return valve (21) provided immediately upstream of the control balloon (10). Application to therapeutic treatments.

Abstract: A device for controlling the flow of a fluid, more especially a biological fluid and in particular the urinary flow, the device including a rod which, in the rest condition, is sealingly clamped, by any appropriate clamping mechanism, inside a connecting tube, and which is made from a flexible plastic material presenting shrinkage on polymerization, and a mechanism which is adapted to prevent the axial movement of the valve rod along the connecting tube under the effect of the pressure of a fluid filling two flexible activating bags connected through the connecting tube, which may be incorporated with a third flexible bag.

Abstract: The invention relates to a novel method of protecting human and animal organs against radiation. A foldable and unfoldable bladder prosthesis such as disclosed in applicants' U.S. Pat. Nos. 4,311,659 and 4,497,074 is placed in position in the body of the patient who has been operated on for a tumor. The balloon is placed in position in the operational site, after excision or reduction of the tumor and prior to treatment by ionizing radiation. This confers on the balloon the role of a protective device against the radiation of normal tissues and organs which are situated in the path of the radiation. It creats a "neutral" channel free from the presence of tissues or organs which can be injured by the ionizing radiation.

Abstract: Organ prostheses are manufactured starting from a support preformed in the shape of the prosthesis to be formed on which a sol giving on cooling a gel enabling a surface state approximating to that of a liquid-air interface is deposited, a hardenable flexible material compatible with body tissues is deposited thereon and the prosthesis removed from the mould. Ureter, bladder, vascular and cardiac prostheses made by this method are disclosed.

Abstract: Organ prostheses are manufactured starting from a support preformed in the shape of the prosthesis to be formed on which a sol giving on cooling a gel enabling a surface state approximating to that of a liquid-air interface is deposited, a hardenable flexible material compatible with body tissues is deposited thereon and the prosthesis removed from the mould. Ureter, bladder, vascular and cardiac prostheses made by this method are disclosed.

Abstract: A ureteral prosthesis comprises a generally tubular member (9) of a urine-resistant and physiologically acceptable flexible material. The tubular member (9) has at least one permanent distortion (7) along its length, and has at least one anti-reflux valve (5) at its downstream end. The permanent distortion (7) is formed so that it co-operates with valve (5) in use of the prosthesis so as to vary the internal volume of the aforesaid prosthesis under the influence of physiological movement of a body part of a patient in which the prosthesis is implanted, which movement results in deformation of the flexible tubular member (9), whereby a pump-action is obtained in the prosthesis.