Textile surgical implants

• US 5,990,378 A
• Filed: 05/23/1996
• Issued: 11/23/1999
• Est. Priority Date: 05/25/1995
• Status: Expired due to Fees

• Current Assignee: Ellis Developments Limited
• Original Assignee: Bridport Gundry Limited
• Inventors: Ellis, Julian Garth
• Primary Examiner(s): Milano, Michael J.
• Assistant Examiner(s): Nguyen, Tram A.
• Application Number:
  US08/652,316
• Time in Patent Office: 1,279 Days
• Field of Search: 606/151, 606/153-155, 606/213-216, 606/228-230, 623/1, 623/11-15, 623/901, 623/66
• US Class Current: 623/11.11
• CPC Class Codes: A61F 2/0063 Implantable repair or support meshes, e.g. hernia meshes
• CPC Class Codes: A61F 2/08 Muscles; Tendons; Ligaments sutures A61B17/04
• CPC Class Codes: A61F 2/92 Stents in the form of a rolled-up sheet expanding after insertion into the vessel , e.g. with a spiral shape in cross-section
• CPC Class Codes: A61F 2002/0068 having a special mesh pattern
• CPC Class Codes: A61F 2002/044 Oesophagi or esophagi or gullets
• CPC Class Codes: A61F 2002/30009 differing in fibre orientations
• CPC Class Codes: A61F 2002/30014 differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2002/30062 (bio)absorbable, biodegradable, bioerodable, (bio)resorbable, resorptive
• CPC Class Codes: A61F 2002/30065 thermoplastic, i.e. softening or fusing when heated, and hardening and becoming rigid again when cooled
• CPC Class Codes: A61F 2002/30156 triangular
• CPC Class Codes: A61F 2002/30235 tubular, e.g. sleeves
• CPC Class Codes: A61F 2002/30289 helically-coiled
• CPC Class Codes: A61F 2210/0004 bioabsorbable
• CPC Class Codes: A61F 2210/0071 thermoplastic
• CPC Class Codes: A61F 2220/0008 Fixation appliances for connecting prostheses to the body
• CPC Class Codes: A61F 2230/0023 triangular
• CPC Class Codes: A61F 2230/0069 cylindrical
• CPC Class Codes: A61F 2230/008 paraboloidal
• CPC Class Codes: A61F 2230/0091 helically-coiled or spirally-coiled, i.e. having a 2-D spiral cross-section
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes
• CPC Class Codes: A61F 2250/0018 : differing in elasticity, stiffness or compressibility
• CPC Class Codes: A61F 2250/0028 : differing in fibre orientations

Abstract

A textile surgical implant includes a base cloth, and an array of fibers provided on the base cloth. The base cloth is removable from the fibers before or after the location of the implant in a patient. A method of making a textile surgical implant is further disclosed. The method includes the step of placing an array of fibers on a base cloth by embroidery. The base cloth is removable from the fibers before or after the implant is implanted.

Claims

1. A textile surgical implant comprising a bioabsorbable base cloth having an embroidered mesh structure disposed thereon, said base cloth being absorbed after the location of the implant in a patient.

2. An implant as claimed in claim 1, wherein the base cloth is soluble.

3. An implant as claimed in claim 1, wherein the base cloth is made from materials which will degrade after the implant is implanted in a patient.

4. An implant as claimed in claim 1, wherein the embroidered mesh structure is reinforced in at least a part thereof.

5. An implant as claimed in claim 1, wherein said implant is of substantially triangular shape.

6. An implant as claimed in claim 1, said embroidered mesh structure having fibres arranged to give greater stiffness in one direction than in another direction.

7. An implant as claimed in claim 6, comprising first fibres of a greater stiffness extending in one direction, and second fibres of a lesser stiffness extending in a second direction, the first and second directions of the fibres being substantially at right angles to one another.

8. An implant as claimed in claim 7, wherein the tube is heat set to retain its shape.

9. An implant as claimed in claim 6 formed as a tube having a radial stiffness greater than the stiffness in the axial direction.

10. An implant as claimed in claim 9, wherein the tube is formed from a strip having fibres arranged in two directions, the strip being wound about an axis.

11. An implant as claimed in claim 10, wherein the strip is wound in a plurality of turns and each turn of the strip, other than the first, overlaps the preceding turn.

12. An implant as claimed in claim 1 and comprising one or more growth factors, angiogenic and neurogenic materials.

13. A method of making a textile surgical implant comprising the step of:

embroidering a mesh structure on a bioabsorbable base cloth, said base cloth being absorbed after the implant is implanted in a patient.

14. A method as claimed in claim 13, wherein the base cloth is soluble and is removed by dissolving the base cloth in a solvent.

15. A method as claimed in claim 13, wherein the base cloth is removed by degradation after the implant has been implanted in a patient.

16. A method as claimed in claim 13 and comprising reinforcing the mesh structure in at least a part thereof.

17. A method as claimed in claim 16, wherein said mesh structure includes fibres arranged to give greater stiffness in one direction of the mesh structure than in another direction thereof.

18. A method as claimed in claim 17, wherein fibres giving grater stiffness are placed at substantially right angles to fibres giving differential stiffness.

19. A method as claimed in claim 17, wherein the mesh structures is formed as a tube having a radial stiffness greater than the stiffness in the axial direction.

20. A method as claimed in claim 19, wherein the tube is formed from a strip having fibres arranged in two directions by winding the strip about an axis.

21. A method as claimed in claim 20, wherein the strip is wound in a plurality of turns, each turn of the strip, other than the first, overlapping the preceding turn.

22. A method as claimed in claim 19 wherein the tube is heat set to retain its shape.

23. A method of making a textile surgical implant comprising the step of:

placing an array of fibers arranged as a mesh on a bioabsorbable base cloth by embroidery, said base cloth being absorbed after the implant is implanted;

wherein said fibers are arranged in the mesh to give greater stiffness in one direction of the mesh than in another direction thereof.

24. A textile surgical implant comprising a base cloth and a mesh structure of fibers provided on said base cloth by embroidery, said base cloth being made from a biocompatible material which is absorbed after the implant is implanted.

25. A method of making a textile surgical implant comprising the step of:

placing a mesh structure of fibers on a base cloth by embroidery, said base cloth being made from a biocompatible material which is absorbed after the implant is implanted.