Longitudinally flexible textile vascular prosthesis
View Patent ↗The invention relates to a textile vascular prosthesis ( 1 ) with a circulatory pleating formed by folds ( 4 ), and with an arch-shaped longitudinal flexion ( 2 ) extending over at least a partial section and formed by asymmetric shortening gathering of the prosthesis wall by means of at least one longitudinal seam ( 7 ) extending along the partial section. The at least one longitudinal seam gathers the prosthesis wall while preserving the accordion-like structure ( 4 ) and the compacted state of the pleating ( 4 ) in the longitudinal direction.
1. A textile vascular prosthesis comprising a pre-compressed vascular prosthesis, with a circulatory pleating formed by folds of the pleating lying on one another, and with an arch-shaped longitudinal flexion extending over at least a partial section and formed by asymmetric shortening gathering of the prosthesis wall by means of at least one longitudinal seam extending along the partial section,
wherein the at least one longitudinal seam gathers the prosthesis wall while preserving the accordion-like structure and the compacted state of the pleating in the longitudinal direction,
wherein the at least one longitudinal seam holds the vascular prosthesis in this state on the inside of the arch, and
wherein in the area of the at least one longitudinal seam, the entire folds of the pleating lie tightly on one another without interstices.
2. The vascular prosthesis as claimed in claim 1 , wherein the arch is preformed by thermal fixing.
3. The vascular prosthesis as claimed in claim 1 , wherein the gathering is effected exclusively by the at least one longitudinal seam, with support by the thermal fixing.
4. The vascular prosthesis as claimed in claim 1 , wherein the at least one longitudinal seam is formed from at least one continuous thread.
5. The vascular prosthesis as claimed in claim 1 , wherein the at least one longitudinal seam is a machine seam.
6. The vascular prosthesis as claimed in claim 1 , wherein the seam is formed from single chain stitches.
7. The vascular prosthesis as claimed in claim 1 , wherein each seam is secured against undesired unravelling at the seam ends and, between the latter.
8. The vascular prosthesis as claimed in claim 1 , further comprising several partial seams which extend one behind another in the longitudinal direction.
9. A curved vascular prosthesis according to claim 8 , wherein between partial seams non-gathered sections of the prosthesis lie.
10. The vascular prosthesis as claimed in claim 1 , wherein several longitudinal seams are formed from the same uninterrupted thread.
11. A curved vascular prosthesis according to claim 10 , wherein several partial seams are formed from the same uninterrupted thread.
12. The vascular prosthesis as claimed in claim 1 , wherein the at least one longitudinal seam is arranged in the area of the inside of the arch.
13. A curved vascular prosthesis according to claim 12 , wherein all seams are arranged in the area of the inside of the arch.