Knitted surgical mesh

• US 6,090,116 A
• Filed: 04/02/1999
• Issued: 07/18/2000
• Est. Priority Date: 10/03/1997
• Status: Expired due to Term

• Current Assignee: Prodesco, Inc. (Compagnie Generale DES Etablissements Michelin SCA), Ethicon Incorporated (Johnson & Johnson)
• Original Assignee: Prodesco, Inc. (Compagnie Generale DES Etablissements Michelin SCA)
• Inventors: D'Aversa, Margaret M., Dougherty, Robert
• Primary Examiner(s): Jackson, Gary
• Application Number:
  US09/269,980
• Time in Patent Office: 473 Days
• Field of Search: 606/151, 57/243
• US Class Current: 606/151
• 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 21/16 incorporating synthetic threads
• CPC Class Codes: D10B 2509/08 Hernia repair mesh

Abstract

A knitted surgical mesh formed from a yarn. The knitted mesh has from 11 to 13 courses per inch and from 8 to 10 wales per inch, a flexibility of from 10 to 16 gfcm/cm, a burst strength greater than 175 pounds per square inch, and a pore size percentage greater than 37%.

Claims

1. A knitted surgical mesh comprised of a knitted yarn, the knitted mesh having from 11 to about 13 courses per inch and from 8 to 10 wales per inch, a flexibility of from 10 to 16 gfcm/cm, a burst strength greater than 175 pounds per square inch, and a pore size percentage greater than 37%.

2. The knitted surgical mesh of claim 1, wherein the pore size percentage of the mesh is from 37% to 50%.

3. The knitted surgical mesh of claim 2, wherein the pore size percentage of the mesh is 42%.

4. The knitted surgical mesh of claim 1, wherein the mesh has a burst strength from 210 to 234 pounds per square inch.

5. The knitted surgical mesh of claim 1, wherein the mesh has a thickness of from 20 to 30 mils.

6. The knitted surgical mesh of claim 5, wherein the thickness of the mesh is from 24 to 25 mils.

7. The surgical mesh of claim 1, wherein the yarn is a polypropylene yarn.

8. The surgical mesh of claim 7, wherein the yarn is a monofilament polypropylene yarn.

9. The surgical mesh of claim 8, wherein the yarn has a denier of from 30 to 300.

10. The surgical mesh of claim 1, wherein the mesh includes a key-hole shaped opening within an interior region of the mesh.