Warp-knitted fabric and medical material

Patent metadata

Field	Value
Publication number	US-12544205-B2
Application number	US-202217975777-A
Country	US
Kind code	B2
Filing date	Oct 28, 2022
Priority date	Jan 14, 2016
Publication date	Feb 10, 2026
Grant date	Feb 10, 2026

Abstract

The present invention provides a warp-knitted fabric and a medical material that can be simultaneously extended in all directions by causing thread made of a second bioabsorbable material to be absorbed in a living body over time and in which the degree of extension can be increased. The present invention provides a warp-knitted fabric 10 in which adjacent loop rows are linked, the warp-knitted fabric 10 including: a plurality of first loop rows including a first thread and composed of continuous loops extending in the warp direction; and one or two or more second loop rows disposed between the first loop rows and composed of continuous loops extending in the warp direction, wherein each second loop row is formed of one or two or more loops solely including a second thread and one or two or more loops including the first thread, which are arranged alternately, at least three first loop rows are linked together by the first thread, and the bioabsorption rate of the first thread is lower than the bioabsorption rate of the second thread.

First claim

What is claimed is:

1 . A sealed fabric in which the fabric areal weight (g/m 2 ) (X), the weight of gelatin coating per unit area (mg/cm 2 ) (Y), and the swelling (%) of the gelatin (Z) in an orthogonal coordinate system (X, Y, Z), are present on edges and in the inner space of a polyhedron having the following vertices: point A (50, 6, 700), point B (50, 6, 800), point C (50, 4, 800), point D (50, 4, 700), point E (70, 6.2, 459), point F (70, 6.2, 965), point G (70, 1.6, 965), point H (70, 1.6, 459), point I (72, 4.9, 826), point J (72, 4.9, 1028), point K (72, 1.7, 1028), and point L (72, 1.7, 826).

2 . The sealed fabric according to claim 1 , wherein the fabric is knitted fabric or woven fabric.

3 . The sealed fabric according to claim 2 , wherein a yarn composed of a bioabsorbable material for use in the fabric has a total fineness of 20 to 200 dtex, a single fiber fineness of 1.3 to 44 dtex, and 1 to 24 filaments.

4 . The sealed fabric according to claim 3 , wherein the fabric is knitted fabric.

5 . A sealed fabric in which the fabric areal weight (g/m 2 ) (X), the weight of gelatin coating per unit area (mg/cm 2 ) (Y), and the swelling (%) of the gelatin (Z) in an orthogonal coordinate system (X, Y, Z), are present on edges and in the inner space of a polyhedron having the following vertices: point A (54, 5.3, 760), point B (70, 6.2, 459), point C (70, 4.4, 965), point D (70, 1.6, 552), point E (72, 1.7, 1028), point F (72, 3.6, 877), and point G (72, 4.9, 826).

6 . The sealed fabric according to claim 5 , wherein a yarn composed of a bioabsorbable material for use in the fabric has a total fineness of 20 to 200 dtex, a single fiber fineness of 1.3 to 44 dtex, and 1 to 24 filaments.

7 . The sealed fabric according to claim 6 , wherein the fabric is knitted fabric.

8 . The sealed fabric according to claim 1 , used for a medical material.

9 . The sealed fabric according to claim 2 , used for a medical material.

10 . The sealed fabric according to claim 3 , used for a medical material.

11 . The sealed fabric according to claim 4 , used for a medical material.

12 . The sealed fabric according to claim 5 , used for a medical material.

13 . The sealed fabric according to claim 6 , used for a medical material.

14 . The sealed fabric according to claim 7 , used for a medical material.

15 . The sealed fabric according to claim 2 , wherein the fabric is woven fabric.

16 . The sealed fabric according to claim 15 , wherein the woven fabric is a plain-woven fabric.

17 . The sealed fabric according to claim 15 , wherein the woven fabric is a twill-woven fabric.

18 . The sealed fabric according to claim 4 , wherein the knitted fabric is a warp-knitted fabric comprising an atlas stitch.

Assignees

• Educational Foundation Of Osaka Medical And Pharmaceutical Univ
• Teijin Ltd

Inventors

• Nemoto Shintaro
• Yamada Hideaki
• Sakurai Jun
• Kohno Kazuteru
• Ito Masaya
• Onishi Atsuko

Classifications

• A61L31/148

  Materials at least partially resorbable by the body · CPC title

• A61F2250/0031

  made from both resorbable and non-resorbable prosthetic parts, e.g. adjacent parts · CPC title

• A61F2002/0068

  having a special mesh pattern · CPC title

• A61F2/0036

  implantable (A61F2/0018 takes precedence) · CPC title

• D10B2401/12

  biodegradable · CPC title