Packaging for dry tissue prosthetic heart valve
A “dry” packaging in which a prosthetic heart valve is packaged within a container with hydrogel that can be provided in many forms. Certain embodiments include hydrogel that is preloaded with glycerol or the like. The hydrogel regulates the humidity within the container through a diffusion-driven mechanism if a gradient of humidity between the inside and the outside of the hydrogel exists. Humidity regulation is important to prevent the tissue of the valve structure from drying out. When the partially-hydrated hydrogel is present within container, which is saturated with air of a predefined humidity, the water molecules from the air will be absorbed by the hydrogel if the air humidity is high (i.e. when the thermodynamics favor hydrogel hydration) or vice versa. Various embodiments are configured to also house at least a portion of a delivery device for delivering the prosthetic heart valve.
1. A packaged prosthetic heart valve, the packaged prosthetic heart valve comprising:
a prosthetic heart valve; and
a container including a first compartment housing the prosthetic heart valve and a second compartment housing a hydrogel; wherein a semi-permeable membrane separates the first and second compartments and the semi-permeable membrane further separates the hydrogel from the first compartment.
2. The packaged prosthetic heart valve of claim 1 , wherein the container includes an opening and a permeable membrane compatible with EtO sterilization of the prosthetic heart valve positioned over the opening.
3. The packaged prosthetic heart valve of claim 1 , wherein the container further includes a hinged cage positioned around the prosthetic heart valve.
4. The packaged prosthetic heart valve of claim 1 , wherein the hydrogel is provided in the form of a sheet, pad or beads.
5. The packaged prosthetic heart valve of claim 1 , wherein the container is formed by a double wall, which defines the second compartment.
6. The packaged prosthetic heart valve of claim 1 , wherein the hydrogel is loaded with glycerol.
7. The packaged prosthetic heart valve of claim 1 , wherein the prosthetic heart valve is secured to a portion of a delivery device that is also at least partially housed in the first compartment.
8. The packaged prosthetic heart valve of claim 7 , further comprising a third compartment housing additional hydrogel.
9. The packaged prosthetic heart valve of claim 7 , wherein the second compartment is proximate the prosthetic heart valve.
10. The packaged prosthetic heart valve of claim 7 , further comprising clips securing the portion of the delivery device to the first compartment.
11. The packaged prosthetic heart valve of claim 7 , wherein the container includes a channel in which the portion of the delivery device is positioned; wherein the channel is separated from the second compartment.
12. The packaged prosthetic heart valve of claim 7 , wherein the container includes first and second hingedly connected portions.
13. The packaged prosthetic heart valve of claim 12 , further comprising a seal proximate an interface between the first compartment and the portion of the delivery device.
14. The packaged prosthetic heart valve of claim 7 , wherein the container includes first and second portions; wherein the first portion includes a removable cover.
15. The packaged prosthetic heart valve of claim 14 , wherein the cover includes two pieces that are snap fit around the portion of the delivery device.
16. The packaged prosthetic heart valve of claim 14 , further comprising a seal interfacing between an aperture in the cover and the portion of the delivery device.
17. The packaged prosthetic heart valve of claim 7 , wherein the container includes first and second portions that are threadably secured to each other.
18. The packaged prosthetic heart valve of claim 7 , further comprising a porous window/vent.
19. The packaged prosthetic heart valve of claim 1 , wherein the container includes two portions of material sealed together to enclose the prosthetic heart valve.
20. The packaged prosthetic heart valve of claim 19 , wherein at least one tether is connected to the prosthetic heart valve and extends from the container.