Injectable scaffold composition
First Claim
1. An injectable composition administrable to a human or non-human animal consisting of polymer particles capable of cross-linking and an aqueous carrier, wherein the polymer particles consist of a first polymer and a second polymer,wherein the first polymer is a plasticizer having a molecular weight of 800 Da or less and is soluble or dispersible in the carrier, such that 1 wt % or more of the first polymer will leach into the carrier within 20 hours at 25°
- C. immediately after combining the first and second polymers with the carrier,wherein the second polymer is an amorphous or semi-crystalline polymer,wherein the amount of the first polymer present in the polymer particles is from 1 to 20% by weight and the ratio of polymer to carrier is from 4;
1 to 1;
4,wherein the polymer particles have a glass transition temperature lower than the glass transition temperature of the second polymer on its own,wherein the polymer particles cross-link in vivo by one or more of fusion, adhesion, cohesion, and entanglement to form a scaffold of polymer particles; and
wherein removal of the first polymer from the scaffold of polymer particles in vivo by leaching results in a hardened scaffold structure.
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Accused Products
Abstract
A composition comprising polymer particles and a carrier, wherein the polymer particles are a mixture of at least a first polymer and a second polymer, wherein the first polymer is at least partially soluble or dispersible in the carrier, and wherein the polymer particles are arranged such that they can join together to form a scaffold of polymer particles, and wherein the composition is administrable to a human or non-human animal.
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Citations
19 Claims
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1. An injectable composition administrable to a human or non-human animal consisting of polymer particles capable of cross-linking and an aqueous carrier, wherein the polymer particles consist of a first polymer and a second polymer,
wherein the first polymer is a plasticizer having a molecular weight of 800 Da or less and is soluble or dispersible in the carrier, such that 1 wt % or more of the first polymer will leach into the carrier within 20 hours at 25° - C. immediately after combining the first and second polymers with the carrier,
wherein the second polymer is an amorphous or semi-crystalline polymer, wherein the amount of the first polymer present in the polymer particles is from 1 to 20% by weight and the ratio of polymer to carrier is from 4;
1 to 1;
4,wherein the polymer particles have a glass transition temperature lower than the glass transition temperature of the second polymer on its own, wherein the polymer particles cross-link in vivo by one or more of fusion, adhesion, cohesion, and entanglement to form a scaffold of polymer particles; and wherein removal of the first polymer from the scaffold of polymer particles in vivo by leaching results in a hardened scaffold structure. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
- C. immediately after combining the first and second polymers with the carrier,
Specification