Biocompatible implant device

• US 20060200250A1
• Filed: 03/04/2005
• Published: 09/07/2006
• Est. Priority Date: 03/04/2005
• Status: Abandoned Application

• Current Assignee: David N. Ku
• Original Assignee: David N. Ku
• Inventors: Ku, David N.
• Application Number:
  US11/073,337
• Publication Number:
  US 20060200250A1
• Time in Patent Office: Days
• US Class Current: 623/23.710
• CPC Class Codes: A61L 27/16 obtained by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C08L 29/04 Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids

Abstract

A medical implant made of an elastic, solid, biocompatible, and non-hemolytic material having a thickness of less than about 5 mm, a modulus of elasticity between about 10 kPa and about 100 MPa. The implant device has a pore size of less than about 10 microns in order to prevent growth and passage of cells through the implant, while allowing water and nutrient transport across the implant device.

Claims

1. A medical implant made of an elastic, solid, biocompatible, and non-hemolytic device having a

thickness of less than about 5 mm, a modulus of elasticity between about 10 kPa and about 100 MPa,

and a pore size of less than about 10 microns that prevents growth and passage of cells through the implant device, while allowing water and nutrient transport across the implant device.

2. The medical implant claimed in claim 1 wherein the implant device has an ultimate stretch greater than 200 percent.

3. The medical implant claimed in claim 1 wherein the implant device is a synthetic organic polymer.

4. The medical implant claimed in claim 3 wherein the implant device is made from aqueous PVA.

5. The medical implant claimed in claim 1 wherein the implant device has an anisotropic cellular penetration through the boundaries of the implant.

6. The medical implant claimed in claim 5 wherein the implant device is tubular in shape.

7. The medical implant claimed in claim 6 wherein the tubular medical implant is open at one end.

8. The medical implant claimed in claim 6 wherein the tubular medical implant is open at both ends.

9. The medical implant claimed in claim 1 wherein the implant device is both radiolucent and clear.

10. The medical implant claimed in claim 1 wherein the implant device is hydrophilic and allows the inclusion of hydrophilic molecules.

11. A medical implant made of an elastic, solid, biocompatible, and non-hemolytic synthetic organic polymer device having a tubular shape,

a uniform thickness of less than about 5 mm, a modulus of elasticity between about 10 kPa and about 100 MPa, an ultimate stretch of greater than 200 percent,

and a pore size of less than about 10 microns that prevents growth and passage of cells through the surfaces of the device, while allowing anisotropic water and nutrient transport across the surfaces and ends of the device.

12. A method of making a semi-crystalline, solid, biocompatible and non-hemolytic implant device having a thickness of less than about 5 mm comprising:

mixing a solution of water and polyvinyl alcohol thereby forming an aqueous PVA mixture;

inserting a solid mandrel into said aqueous PVA mixture whereby the viscosity of said aqueous PVA mixture causes said aqueous PVA mixture to adhere to said mandrel;

spinning said mandrel within a non-aqueous environment or air in order to allow said aqueous PVA mixture to solidify at a uniform thickness about said mandrel;

freezing and thawing said aqueous PVA mixture at least once in order to create a semi-crystalline solid biocompatible implant device; and

removing said mandrel from said semi-crystalline solid biocompatible implant device.