Textile products having a sealant or coating
AssigneeHothouse Medical Limited
InventorsDavid Granville Stevenson, Timothy Rawden Ashton
Life of this patent
Estimating the term…
Abstract
A vascular prosthesis includes a tubular wall disposed between a first open end and an opposed second open end and having an inner surface and an opposed outer surface. The tubular wall includes a textile construction of one or more filaments or yarns, the textile construction by itself being permeable to liquid. The outer surface includes a coating of a water-insoluble elastomeric sealant. The tubular wall having the coating of the water-insoluble elastomeric sealant is, after curing thereof, impermeable to liquid. The inner surface is free of the water-insoluble elastomeric sealant.
Claims25
An implantable textile graft comprising:
- a textile tubular wall comprising an inner surface, an opposed outer surface, and an intermediate portion disposed thereinbetween, the textile tubular wall comprising a textile construction of yarns;
- and
- a cured coating comprising an elastomeric sealant disposed on the outer surface and disposed within the intermediate portion;
- wherein the elastomeric sealant comprises a substantially water-insoluble, non-biodegradable elastomeric sealant;
- wherein the textile tubular wall having the cured coating thereon is substantially impermeable to liquid;
- wherein a weight per unit area of the elastomeric sealant disposed on the textile tubular wall is at about 4 mg/cm2 to about 19 mg/cm2;
- and
- wherein the inner surface comprises an exposed portion of the yarns.
An implantable textile graft comprising:
- a textile tubular wall comprising an inner surface, an opposed outer surface, and an intermediate portion disposed thereinbetween, the textile tubular wall comprising a textile construction of multi-filament yarns;
- and
- a cured coating comprising an elastomeric sealant disposed on the outer surface and disposed within the intermediate portion;
- wherein the elastomeric sealant is a substantially water-insoluble, non-biodegradable elastomeric sealant comprising a silicone-containing polymer;
- wherein the textile tubular wall having the cured coating thereon has a water permeability of about 0.16 ml/min/cm2 at 120 mmHg pressure or less than 0.16 ml/min/cm2 at 120 mmHg pressure;
- wherein a weight per unit area of the elastomeric sealant disposed on the textile tubular wall is at about 4 mg/cm2 to about 19 mg/cm2;
- and
- wherein the inner surface is substantially free of the elastomeric sealant and comprises a sufficiently exposed portion of the multi-filament yarns whereby the exposed portion is configured to promote biological tissue growth thereon.
Dependencies are inferred from the claim text.