Abstract: A balloon catheter comprising a fluid dispensing device. The device comprises a housing defining a chamber for retaining, in use, balloon inflation fluid. An outlet attaches, in use, to a catheter inflation lumen, and dispensing means dispenses fluid, in use, from the chamber via the outlet into the catheter lumen. An indicator indicates when a predetermined volume of fluid has been dispensed from the outlet.

Abstract: A compound of formula: ##STR1## in which X.sup.1 is a reactive group that can react to form a covalent bond with a reactive group on the surface of a material to be rendered biocompatible, X.sup.2 is a group --O.sup..crclbar. or a precursor of such a group, n is 2, 3 or 4, Y is a group --N.sup..sym. R.sub.3 A.sup..crclbar. wherein each R, which may be the same or different, is a C.sub.1 -C.sub.4 alkyl group and A.sup..crclbar. is an anion present when X.sup.2 is an electrically neutral group or Y is ##STR2## wherein R.sup.1 together with X.sup.2 forms a direct bond between the nitrogen and the phosphorus atoms.

Abstract: A compound of formula: ##STR1## in which X.sup.1 is a reactive group that can react to form a covalent bond with a reactive group on the surface of a material to be rendered biocompatible, X.sup.2 is a group -O.sup..crclbar. or a precursor of such a group, n is 2, 3 or 4, Y is a group --N.sup..sym. R.sub.3 A.sup..crclbar. wherein each R, which may be the same or different, is a C.sub.1 -C.sub.4 alkyl group and A.sup..crclbar. is an anion present when X.sup.2 is an electrically neutral group or Y is ##STR2## wherein R.sup.1 together with X.sup.2 forms a direct bond between the nitrogen and the phosphorus atoms.

Abstract: A compound of formula: ##STR1## in which X.sup.1 is a reactive group that can react to form a covalent bond with a reactive group on the surface of a material to be rendered biocompatible, X.sup.2 is a group --0.crclbar. or a precursor of such a group, n is 2, 3 or 4, Y is a group N.sup..sym. R.sub.3 A.sup..crclbar. A wherein each R, which may be the same or different, is a C.sub.1 -C.sub.4 alkyl group and A.sup..crclbar. is an anion present when X.sup.2 is an electrically neutral group or Y is ##STR2## wherein R.sup.1 together with X.sup.2 forms a direct bond between the nitrogen and the phosphorus atoms.

Abstract: A compound of formula: ##STR1## in which X.sup.1 is a reactive group that can react to form a covalent bond with a reactive group on the surface of a material to be rendered biocompatible, X.sup.2 is a group -0.sup..crclbar. or a precursor of such a group, n is 2, 3 or 4, Y is a group --N.sup..sym. R.sub.3 A.sup..crclbar. wherein each R, which may be the same or different, is a C.sub.1 -C.sub.4 alkyl group and A.sup..crclbar. is an anion present when X.sup.2 is an electrically neutral group or Y is ##STR2## wherein R.sup.1 together with X.sup.2 forms a direct bond between the nitrogen and the phosphorus atoms.

Abstract: A biocompatible polyester comprising repeating units derived from glycerophosphorylcholine or glycerophosphorylethanolamine and at least one di- or poly-functional acid or reactive derivative thereof is haemocompatible and may be used in components for handling body fluids and in prostheses.

Abstract: A compound of formula: ##STR1## in which X.sup.1 is a reactive group that can react to form a covalent bond with a reactive group on the surface of a material to be rendered biocompatible, X.sup.2 is a group --O.sup..crclbar. or a precursor of such a group, n is 2, 3 or 4, Y is a group --N.sup..sym. R.sub.3 A.sup..crclbar. wherein each R, which may be the same or different, is a C.sub.1 -C.sub.4 alkyl group and A.sup..crclbar. is an anion present when X.sup.2 is an electrically neutral group or Y is ##STR2## wherein R.sup.1 together with X.sup.2 forms a direct bond between the nitrogen and the phosphorus atoms.

Abstract: A polyurethane reaction product of a di- or polyisocyanate and a diol or polyol having at least two hydroxyl groups capable of reacting with an isocyanate group and having the residue of at least one further hydroxyl group present in the form of a phosphorus acid ester group of formula (I), wherein n is 0 or 1, m is 2, 3, or 4 and each R independently is an alkyl group of 1 to 4 carbons optionally with a diol or polyol which does not contain a group of formula I is useful in biocompatible, particularly haemocompatible devices for use in methods of medical treatment.