IP Library › Granted Patent US 12702408
Granted Patent B2
US 12702408 · App. 18/901,915 · Granted Aug 11, 2026

Rigid sterile barrier

Inventors: Anna Mazzoni (Hamburg, DE); Christiane Eichenseer (Hamburg, DE); Denise Griffiths (Hamburg, DE); Nicholas Layman (Cincinnati, OH); John P. Soehnlen (Cincinnati, OH); Rebecca Morgenroth (Hamburg, DE)
Assignee: CILAG GMBH INTERNATIONAL
A61B17/068A61B50/33A61B2017/0688A61B2050/3004
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Quick Facts
Patent No.
US 12702408
App. No.
18/901,915
Granted
Aug 11, 2026
Kind
B2
Abstract

A rigid sterile barrier for protecting and maintaining a sterile environment for a medical device is disclosed. The rigid sterile barrier comprises a thermoformed tray and a top foil comprising a desiccant.

Claims (23)

1 . A rigid sterile barrier for a medical device ( 400 ):

a thermoformed tray ( 100 ) comprising:

a cavity ( 106 );

a lip ( 110 ) extending above and disposed around a perimeter of the cavity; and

a flange ( 112 ) extending around the lip ( 110 );

an oxygen scavenger ( 300 ) disposed in a bottom ( 107 ) of the cavity ( 106 ); and

a top foil ( 200 ) adhered to the lip ( 110 ) of the thermoformed tray, the top foil ( 200 ) being non-permeable and comprising a desiccant, wherein the desiccant is integrated into a first polymer layer of the top foil, and wherein the first polymer layer comprising the desiccant is positioned between a second polymer layer and a third polymer layer, the second polymer layer and the third polymer layer having higher densities than the first polymer layer.

2 . The rigid sterile barrier of claim 1 , wherein the desiccant comprises calcium oxide.

3 . The rigid sterile barrier of claim 1 , wherein the medical device ( 400 ) is configured to be disposed between the oxygen scavenger and the top foil ( 200 ).

4 . The rigid sterile barrier of claim 1 , wherein the oxygen scavenger is thermally welded to the bottom ( 107 ) of the cavity ( 106 ) of the thermoformed tray ( 100 ).

5 . The rigid sterile barrier of claim 1 , wherein the thermoformed tray ( 100 ) comprises an aluminum layer ( 134 ).

6 . The rigid sterile barrier of claim 1 , wherein the thermoformed tray ( 100 ) is at least 300 microns thick.

7 . The rigid sterile barrier of claim 1 , wherein the thermoformed tray ( 100 ) is at approximately 350 microns thick.

8 . The rigid sterile barrier of claim 1 , wherein the top foil ( 100 ) is approximately 90 microns thick.

9 . The rigid sterile barrier of claim 1 , wherein the top foil ( 200 ) comprises an aluminum layer ( 228 ).

10 . The rigid sterile barrier of claim 1 , further comprising the medical device, and wherein the medical device ( 400 ) is a surgical staple cartridge.

11 . The rigid sterile barrier of claim 10 , wherein the surgical staple cartridge comprises a length of approximately 100 millimeters, a width of approximately 45 mm, and a thickness of approximately 16 millimeters.

12 . The rigid sterile barrier of claim 1 , wherein the cavity ( 106 ) does not comprise an additional desiccant.

13 . The rigid sterile barrier of claim 1 , wherein the thermoformed tray ( 100 ) does not comprise an additional desiccant integrated into the thermoformed tray ( 100 ).

14 . The rigid sterile barrier of claim 1 , wherein the thermoformed tray ( 100 ) does not comprise an additional oxygen scavenger integrated into the thermoformed tray ( 100 ).

15 . The rigid sterile barrier of claim 1 , wherein the top foil ( 200 ) does not comprise an additional oxygen scavenger integrated into the top foil ( 200 ).

16 . The rigid sterile barrier of claim 1 , wherein the cavity ( 106 ) is filled with an inert gas.

17 . The rigid sterile barrier of claim 16 , wherein the inert gas is nitrogen.