Compliant osteosynthesis fixation plate

• US 20050085817A1
• Filed: 09/14/2004
• Published: 04/21/2005
• Est. Priority Date: 07/15/2003
• Status: Active Grant

• Current Assignee: DSM IP Assets BV (DSM-Firmenich AG)
• Original Assignee: Kensey Nash Corporation (DSM-Firmenich AG)
• Inventors: Ringeisen, Timothy A.
• Granted Patent: US 8,679,163 B2
• Time in Patent Office: Days
• US Class Current: 623/11.110
• CPC Class Codes: A61B 17/80 Cortical plates , i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
• CPC Class Codes: A61B 17/8061 specially adapted for particular bones A61B17/70 and A61B17/74 take precedence
• CPC Class Codes: A61B 17/8085 with pliable or malleable elements or having a mesh-like structure, e.g. small strips A61B17/8071, A61B17/8076 take precedence
• CPC Class Codes: A61B 2017/00004 (bio)absorbable, (bio)resorbable or resorptive
• CPC Class Codes: A61L 2300/00 Biologically active materials used in bandages, wound dressings, absorbent pads or medical devices
• CPC Class Codes: A61L 31/04 Macromolecular materials
• CPC Class Codes: A61L 31/125 having a macromolecular matrix
• CPC Class Codes: A61L 31/146 Porous materials, e.g. foams or sponges
• CPC Class Codes: A61L 31/148 Materials at least partially resorbable by the body
• CPC Class Codes: A61L 31/16 Biologically active materials, e.g. therapeutic substances A61L31/047 takes precedence
• CPC Class Codes: A61L 31/18 Materials at least partially X-ray or laser opaque

Abstract

A bendable polymer tissue fixation device suitable to be implanted into a living body, consisting of a highly porous body, made from a polymer, the porous body having a plurality of pores, such that the device is capable of being smoothly bent, wherein the bending collapses a portion of the pores to form a radius curve, and the polymer fixation device is rigid enough to protect a tissue from shifting. Preferably, the polymer fixation device may be capable of being gradually resorbed by said living body. In one embodiment, the polymer fixation device consists of a plurality of layers distinguishable by various characteristics, such as structural or chemical properties. In another embodiment, the polymer fixation device may feature additional materials which serve to reinforce or otherwise alter the structure or physical characteristics of the device, or alternatively the additional materials serve to deliver therapies to the living being.

Claims

1. A bendable polymer tissue fixation device for implantation into a living body, said polymer fixation device being arranged as a graft retainment device, said polymer fixation device comprising a highly porous body, said porous body comprising at least one polymer and a plurality of pores, wherein said porous body is capable of being smoothly bent to conform to a tissue structure, with said bending at least partially collapsing a portion of the pores to form a radius curve, said polymer fixation device being suitable for attachment to tissue, and capable of being gradually resorbed by said living body.

2. A bendable polymer tissue fixation device for implantation into a living body, said polymer fixation device comprising a highly porous body and an additional material, said porous body comprising at least one polymer and a plurality of pores, wherein said porous body is capable of being smoothly bent, with said bending at least partially collapsing a portion of the pores to form a radius curve, said additional material comprising at least one biologically active agent being arranged as a drug depot able to deliver said at least one biologically active agent over a period of time, said polymer fixation device being suitable for attachment to tissue, and capable of being gradually resorbed by said living body.

3. A bendable polymer tissue fixation device for implantation into a living body, said polymer fixation device being arranged as a graft retainment device, said polymer fixation device comprising a composite, said composite comprising a highly porous body and at least one strengthening agent contained therein, said porous body comprising a plurality of pores and being capable of being smoothly bent to conform to a tissue structure, wherein said bending collapses a portion of the pores to form a radius curve, said polymer fixation device being suitable for attachment to tissue, and capable of being gradually resorbed by said living body.

4. A bendable polymer tissue fixation device for implantation into a living body, said polymer fixation device comprising a composite, said composite comprising a highly porous body, at least one strengthening agent contained therein, and at least one biologically active agent, said porous body comprising a plurality of pores and being capable of being smoothly bent, wherein said bending collapses a portion of the pores to form a radius curve, said at least one biologically active agent being arranged as a drug depot able to deliver said at least one biologically active agent over a period of time, said polymer fixation device being suitable for attachment to tissue, and capable of being gradually resorbed by said living body.

5. A device suitable for implantation into a living body, said device comprising a laminar body, said laminar body having at least a first layer, at least a second layer, said first layer comprising a highly porous form of a first material, said second layer comprising a second material arranged as a laminate against at least a portion of a surface of said first layer, said first layer comprising a polymer;

said porous form comprising a plurality of pores, said laminar body being capable of being smoothly bent, wherein said bending collapses a portion of the pores of the porous form to prevent cracking or breaking of the non-porous form, said device being suitable for attachment to tissue, and capable of being gradually resorbed by said living body.

6. The device of claim 5, wherein said second material is a polymer.

7. The device of claim 5, wherein said second material is a metal.

8. The device of claim 5, wherein said second material is fibrous.

9. The device of claim 5, wherein said second material is porous.

10. The device of claim 5, wherein said second layer is in a form selected from the group consisting of a plate, a screen, and a mesh.

11. The device of claim 5, further comprising at least one additive component.

12. The device of claim 11, wherein said at least one additive component is distributed uniformly throughout said device.

13. The device of claim 11, wherein said at least one additive component is distributed within said pores of said device.

14. The device of claim 11, wherein said at least one additive component is distributed in a portion of said device.