Self-contained biological indicator

Patent metadata

Field	Value
Publication number	US-10907126-B2
Application number	US-201615057768-A
Country	US
Kind code	B2
Filing date	Mar 1, 2016
Priority date	Mar 1, 2016
Publication date	Feb 2, 2021
Grant date	Feb 2, 2021

Abstract

A biological sterilization indicator includes a housing having a first enclosure and a second enclosure, an ampule containing a liquid growth medium, and an insert disposed at least partially in the first enclosure. A portion of the ampule may be disposed inside the first enclosure. The insert may have a platform including a top surface, an abutment surface, and a side surface, as well as a first void disposed in the platform and configured to allow passage of a first volume of the liquid growth medium into the second enclosure and a second void disposed through at least a portion of the side surface and configured to allow passage of a second volume of the liquid growth medium into the second enclosure.

First claim

I claim:

1. A biological sterilization indicator comprising:
(a) a housing having a first enclosure, a second enclosure, and a support;
(b) an ampule containing a liquid growth medium, the ampule including a first end and a second end, wherein at least a portion of the ampule comprising the second end is disposed inside the first enclosure; and
(c) an insert disposed at least partially in the first enclosure, the insert having
(i) a platform including a top surface, an abutment surface, and a side surface,
(ii) a first void disposed in the platform and configured to allow passage of a first volume of the liquid growth medium into the second enclosure, and
(iii) a second void disposed through at least a portion of the side surface and configured to allow passage of a second volume of the liquid growth medium into the second enclosure,
wherein the top surface is parallel to the abutment surface,
wherein the abutment surface abuts the support of the housing, and
wherein the second end of the ampule is in contact with the insert

wherein the second void of the insert is an angled cut through the abutment surface and the side surface.

2. The biological sterilization indicator of claim 1 , wherein the angled cut of the insert is disposed entirely beneath the top surface.

3. The biological sterilization indicator of claim 2 , wherein the insert further includes a wall disposed on the top surface of the platform.

4. The biological sterilization indicator of claim 3 , wherein the wall has a cylindrical form.

5. The biological sterilization indicator of claim 1 , wherein the side surface is an exterior surface of the insert.

6. The biological sterilization indicator of claim 1 , wherein the side surface includes an upper side surface and a lower side surface.

7. The biological sterilization indicator of claim 6 , wherein the abutment surface is disposed between the upper side surface and the lower side surface.

8. A biological sterilization indicator comprising:
(a) a housing having a first enclosure,-a second enclosure, and a support;
(b) an ampule containing a liquid growth medium, the ampule including a first end and a second end, wherein at least a portion of the ampule comprising the second end is disposed inside the first enclosure; and
(c) an insert disposed at least partially in the first enclosure, the insert having
(i) a platform including a top surface, an abutment surface, and a side surface,
(ii) a first void disposed in the platform and configured to allow passage of a first volume of the liquid growth medium into the second enclosure, and
(iii) a second void disposed through at least a portion of the side surface and configured to allow passage of a second volume of the liquid growth medium into the second enclosure,
wherein the abutment surface abuts the support of the housing, and
wherein the second end of the ampule is in contact with the insert

wherein the second void of the insert is an angled cut through the abutment surface and the side surface.

9. The biological sterilization indicator of claim 8 , wherein the angled cut of the insert is disposed entirely beneath the top surface.

10. The biological sterilization indicator of claim 9 , wherein the insert further includes a wall disposed on the top surface of the platform.

11. The biological sterilization indicator of claim 10 , wherein the wall has a cylindrical form.

12. The biological sterilization indicator of claim 8 , wherein the side surface is an exterior surface of the insert.

13. The biological sterilization indicator of claim 8 , wherein the side surface includes an upper side surface and a lower side surface.

14. The biological sterilization indicator of claim 13 , wherein the abutment surface is disposed between the upper side surface and the lower side surface.

Assignees

• Asp Global Mfg Gmbh

Inventors

• Amin Benham

Classifications

• C12Q1/22

  Testing for sterility conditions · CPC title

• C12Q1/04

  Determining presence or kind of microorganism; Use of selective media for testing antibiotics or bacteriocides; Compositions containing a chemical indicator therefor {(C12Q1/6897 takes precedence)} · CPC title

• C12M1/34

  Measuring or testing with condition measuring or sensing means, e.g. colony counters · CPC title

• A61L2/28 Primary

  Devices for testing the effectiveness or completeness of sterilisation or disinfection, e.g. indicators which change colour · CPC title

• C12M37/06 Primary

  Means for testing the completeness of the sterilization (testing for sterility conditions C12Q1/22) · CPC title