Catheter for introduction into body cavities
AssigneeFirma Pfrimmer & Co. Pharmazeutische Werke Erlangen GmbH
InventorPeter Iwatschenko
Life of this patent
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Abstract
A catheter for the introduction into body cavities is made out of high-molecular material such as plastic, latex or the like and a physiologically compatible external stiffening coating thereon, the stiffening coating comprising a material soluble in body fluids.
Claims9
A catheter for temporary introduction into body cavities and adapted for one-time use, said catheter being made of a soft, highly flexible, and high-molecular material such as plastic, latex, or the like and a physiologically compatible external stiffening coating of gelatine thereon to provide temporary sufficient stiffness to the catheter in order to facilitate insertion of the catheter into a body cavity, said gelatine coating being soluble in body fluids, said gelatine coating providing sufficient stiffness to the catheter to enable the catheter to be readily inserted in a body cavity, said gelatine coating dissolving in said cavity to thereby expose said soft, high-flexible, and high-molecular material to thereby provide indwelling comfort over extended periods of time until withdrawn.
The method of rigidizing a catheter of the type which is temporarily used one time to facilitate insertion into a body cavity and removing said rigidity after insertion to provide indwelling comfort for extended periods of time until withdrawn from the body cavity, comprising coating a soft, highly flexible, and high-molecular material such as plastic, latex or the like with a physiologically compatible external stiffening coating of gelatine, and causing said gelatine coating to be dissolved by the body fluids to thereby expose said soft, highly flexible, highly-molecular material to provide indwelling comfort over extended periods of time until withdrawn.
Dependencies are inferred from the claim text.