Mechanical heart valve packaged in a liquid

• US 20020120328A1
• Filed: 12/21/2000
• Published: 08/29/2002
• Est. Priority Date: 12/21/2000
• Status: Abandoned Application

• Current Assignee: Chandrashekhar Prabhakar Pathak, Joseph Andrew Chinn
• Original Assignee: Chandrashekhar Prabhakar Pathak, Joseph Andrew Chinn
• Inventors: Pathak, Chandrashekhar Prabhakar, Chinn, Joseph Andrew
• Application Number:
  US09/746,380
• Publication Number:
  US 20020120328A1
• Time in Patent Office: Days
• US Class Current: 623/2.2
• CPC Class Codes: A61F 2/0095 Packages or dispensers for prostheses or other implants for intraocular lenses A61F2/1691; for dental surgery A61C19/02
• CPC Class Codes: A61F 2/24 Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body

Abstract

A mechanical heart valve and packaging wherein the mechanical valve is surrounded by a liquid. In one embodiment, a glutaraldehyde solution is used. In another embodiment, organic solvents are used. The liquid will not cause a particulate to form during storage. In addition, the liquid will not produce harmful changes in the polymeric sewing ring, for example. That is, the liquid does not cause degradation of the polymeric materials comprising the heart valve, nor does it cause swelling of such materials, nor the dissolution of polymeric materials.

Claims

1. A combination of a mechanical heart valve and packaging comprising

a mechanical heart valve having

an annular valve body having an inside surface and an outside surface,

a leaflet occluder coupled to said valve body, and

a sewing ring attached to said outside surface of said annular valve body,

a sealed container, said mechanical heart valve being disposed within in said container, and

a liquid disposed within said container, said mechanical heart valve being immersed in said solution.

2. The combination of claim 1 wherein said liquid comprises a solution consisting of between 0.1% and 50% gluteraldehyde.

3. The combination of claim 2 wherein said liquid consists of between 0.2 and 0.6% gluteraldehyde.

4. The combination of claim 1 wherein said liquid has a pH sufficient to prevent formation of particles.

5. The combination of claim 4 wherein said liquid is buffered.

6. The combination of claim 5 wherein said liquid comprises an organic buffer.

7. The combination of claim 6 wherein said organic buffer is selected from the group consisting of:

HEPES and triethanol amine buffer.

8. The combination of claim 5 wherein said liquid is buffered with an inorganic buffer.

9. The combination of claim 8 wherein said liquid is buffered with phosphate buffer.

10. The combination of claim 4 wherein said liquid has a pH less than 7.4.

11. The combination of claim 1 wherein said liquid comprises from 20% to 100% alcohol.

12. The combination of claim 1 wherein said heart valve further comprises a polymer and wherein said liquid inhibits at least one of degradation of said polymeric material, swelling of said polymeric material, and dissolution of said polymeric material.

14. The combination of claim 13 wherein said device is selected from a group consisting of a mechanical heart valve, a vascular graft, an annuloplasty ring, or a combination thereof.

15. The combination of claim 13 wherein said solution comprises a solution consisting of greater than 0.2% gluteraldehyde.

16. The combination of claim 13 wherein said solution has a pH sufficient to prevent formation of a particulate.

17. The combination of claim 16 wherein said solution has a pH less than 7.4.

18. The combination of claim 16 wherein said solution comprises at least 20% alcohol.

19. The combination of claim 18 wherein said solution inhibits change of said polymeric fabric element.

13. A combination of an implantable medical device and packaging comprising an implantable medical device having no tissue components and further comprising

a polymeric fabric element configured to contact tissue of a patient in whom the device is to be implanted, and

a sealed container, said device being placed in said container, and

an anti-microbial solution in said container, said device being in contact with said solution.