Centre National De La Recherche Scientifique

Agence Nationale De Valorisation De La Recherche (anvar)

Other

Clement Claude Abbou

Pierre Theodore Rey

Jacqueline Agathe Leandri

Alain J Sezeur

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. A prosthetic organ formed by a urethral prosthesis of the interchangeable type including a tube made, for example, from silicon elastomer and a plurality of spurs formed on its outer surface and preventing any axial movement thereof, some of which are directed downwards, whereas the remainders are directed upwards, which prosthetic organ further includes, at the proximal end of the tube a mechanism providing sealing with respect to the bladder cooperates with the device for controlling the urinary.

Device for controlling the flow of a fluid and a prosthetic organ

Rechargeable implantable device for dosed and repeated self-injection of

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. A prosthetic organ is formed by a urethral prosthesis of the interchangeable type including a tube made, for example, from silicon elastomer and a plurality of spurs formed on its outer surface and preventing any axial movement thereof, some of which are directed downwards, whereas the remainder are directed upwards, which prosthetic organ further includes, at the proximal end of the tube a mechanism providing sealing with respect to the bladder cooperates with the device for controlling the urinary.

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.

Method for protecting human or animal organs against radiation

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.

Organ prostheses

Processes for the manufacture of organ prostheses

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.

Total or partial ureteral prosthesis

A control device in implantable sub-cutaneously for use in medicine and surgery. It is actuable by pressing on a sub-cutaneous membrane. It comprises a first chamber closed by the membrane which is placed on one surface of its casing and contains an incompressible fluid, and a second chamber, containing a gas and housing two coaxial bellows connected at their free ends. One of the bellows communicates with the first chamber and the second bellows communicates with a flexible duct going to the duct or cavity to be controlled.

Growing community of inventors

Fontenay S/Bois, France

Clement Claude Abbou