Lightweight surgical mesh

• US 20090326565A1
• Filed: 05/15/2009
• Published: 12/31/2009
• Est. Priority Date: 06/27/2008
• Status: Abandoned Application

• Current Assignee: Herniamesh S.r.l.
• Original Assignee: Herniamesh S.r.l.
• Inventors: Crepaldi, Pier Aldo, Trabucco, Ermanno E.
• Application Number:
  US12/454,308
• Publication Number:
  US 20090326565A1
• Time in Patent Office: Days
• US Class Current: 606/151
• CPC Class Codes: A61F 2/0045 Support slings
• CPC Class Codes: A61F 2/0063 Implantable repair or support meshes, e.g. hernia meshes
• CPC Class Codes: A61F 2002/0068 having a special mesh pattern
• CPC Class Codes: D04B 21/12 characterised by thread material
• CPC Class Codes: D10B 2509/08 Hernia repair mesh

Abstract

A lightweight knitted surgical mesh which includes a first axis, a second axis perpendicular to the first axis, a third axis offset approximately 30° to 60° from the first axis, and a fourth axis perpendicular to the third axis. Further the mesh has a first weave running parallel to the first axis, a second weave running parallel to the second axis, a third weave running parallel to the third axis, and a fourth weave running parallel to the fourth axis. In an embodiment, the third axis is offset 45° from the first axis to form an isotropic mesh.

Claims

1. A lightweight knitted surgical mesh comprising:

a first axis;

a second axis perpendicular to the first axis;

a third axis offset approximately 30°

to 60°

from the first axis;

a fourth axis perpendicular to the third axis;

a first weave running parallel to the first axis;

a second weave running parallel to the second axis;

a third weave running parallel to the third axis; and

a fourth weave running parallel to the fourth axis.

2. The lightweight knitted surgical mesh of claim 1, wherein the third axis is offset 45°

from the first axis.

3. The lightweight knitted surgical mesh of claim 1, wherein the first weave comprises a plurality of parallel filaments, wherein the filaments are equidistantly spaced.

4. The lightweight knitted surgical mesh of claim 1, wherein at least two of the first weave, the second weave, the third weave, and the fourth weave comprises a plurality of parallel filaments, wherein the filaments for the weave are equidistantly spaced.

5. The lightweight knitted surgical mesh of claim 4, wherein the filaments for the first weave, the second weave, the third weave, and the fourth weave are all equidistantly spaced forming an isotropic mesh.

6. The lightweight knitted surgical mesh of claim 1, wherein the first weave, the second weave, the third weave, and the fourth weave comprise filaments which are at least one of monofilaments and multi-filaments.

7. The lightweight knitted surgical mesh of claim 6, wherein the filaments comprise a diameter of80 m±

10%.

8. The lightweight knitted surgical mesh of claim 6, wherein the filaments comprise a diameter of 60 m to 180 m.

9. The lightweight knitted surgical mesh of claim 6, wherein the filaments comprise a tenacity of 20% to 35% elongation.

10. The lightweight knitted surgical mesh of claim 1, wherein the mesh comprises a specific weight of approximately 25 to 200 g/m².

11. The lightweight knitted surgical mesh of claim 1, wherein at least one of the first weave, the second weave, the third weave, and the fourth weave comprise:

clear filaments and dyed filaments.

12. The lightweight knitted surgical mesh of claim 11, wherein a spacing between dyed filaments is ½

inch to 2 inches.

13. The lightweight knitted surgical mesh of claim 6, wherein the filaments comprise one of polypropylene, polyester, or polyvinylidene fluoride.

14. The lightweight knitted surgical mesh of claim 6, wherein the filaments comprise a coating comprising at least one expanded poly-tetrafluoroethene/poly-tetrafluoroethylene, Teflon®

, and biocompatible synthetic material.

15. The lightweight knitted surgical mesh of claim 6, wherein the mesh comprises a coating comprising at least one of biocompatible synthetic material, titanium, silicone, anti microbial agents, absorbable collagen, non-absorbable collagen, and harvested material.

16. The lightweight knitted surgical mesh of claim 1, wherein at least one of the first weave, the second weave, the third weave, and the fourth weave comprise:

absorbable filaments and non-absorbable filaments.

17. The lightweight knitted surgical mesh of claim 1, wherein the mesh comprises a tensile strength greater than 16 N/cm.

18. The lightweight knitted surgical mesh of claim 1, wherein the first weave, the second weave, the third weave, and the fourth weave all intersect at at least one point in the mesh.