Test card with well shelf

Patent metadata

Field	Value
Publication number	US-10987668-B2
Application number	US-201715852562-A
Country	US
Kind code	B2
Filing date	Dec 22, 2017
Priority date	Dec 23, 2016
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

Provided herein are a test card, method of manufacturing the same, and mold for manufacturing the same. The test card may include a body and a well. The body may include a first surface and a second surface opposite the first surface. The well may define an opening extending from the first surface to the second surface and configured to receive a sample therein. The well may further include a shelf extending into the opening, such that the opening is narrower between the shelf and the second surface than between the shelf and the first surface.

First claim

The invention claimed is:

1. A test card comprising:
a body comprising a first surface and a second surface opposite the first surface, the body defining at least one liquid supply conduit and at least one intake port, wherein the at least one intake port fluidically connects the at least one supply conduit with an exterior of the test card;
at least one well defining an opening extending from the first surface to the second surface and configured to receive a sample therein; wherein the at least one well comprises:
a wall bounding the opening and extending between the first surface and the second surface of the card;
a shelf defined by the wall, wherein a first portion of the wall extends from the shelf surface to the first surface and a second portion of the wall extends from the shelf surface to the second surface, and wherein the shelf protrudes from the first portion of the wall and connects the first portion of the wall to the second portion of the wall, and wherein the opening is narrower between the shelf and the second surface than between the shelf and the first surface, the shelf further defining a shelf surface substantially parallel to the first surface or the second surface; and
a supply conduit opening defined in the wall at a position above at least a portion of the shelf such that the supply conduit opening and the at least the portion of the shelf are aligned circumferentially relative to the at least one well, the supply conduit opening connecting the at least one liquid supply conduit with the at least one well such that the at least one well is fluidically connected to the at least one intake port.

2. The test card of claim 1 , wherein a first distance between the shelf and the first surface is greater than the distance between the shelf and the second surface.

3. The test card of claim 1 , wherein the shelf surface defines a radial width from 0.035 mm to 0.05 mm, wherein the radial width is defined in a direction parallel to the first surface or the second surface.

4. The test card of claim 1 , wherein the shelf extends circumferentially about the opening within the at least one well.

5. The test card of claim 1 , wherein the at least one well comprises a plurality of wells.

6. The test card of claim 5 , wherein the at least one well comprises 104 wells.

7. The test card of claim 5 , wherein the at least one intake port comprises one intake port; wherein each of the plurality of wells comprises a distinct supply conduit opening, including the supply conduit opening associated with a first well; and wherein each distinct supply conduit opening is fluidically connected to the one intake port.

8. The test card of claim 1 , wherein the supply conduit opening is disposed closer to the first surface than the shelf.

9. The test card of claim 1 , wherein the opening extends entirely through the body, such that the opening is configured to allow light to travel through the body, the test card further comprising:
a first clear sealing membrane disposed on the first surface of the body, wherein the first clear sealing membrane is configured to cover the opening at the first surface, and
a second clear sealing membrane disposed on the second surface of the body, wherein the second clear sealing membrane is configured to cover the opening at the second surface.

10. The test card of claim 1 , further comprising a bubble trap connected to the at least one well via a channel, wherein the channel is connected to the at least one well at the first portion.

11. A method of manufacturing a test card, the test card comprising a body comprising a first surface and a second surface opposite the first surface, the body defining at least one liquid supply conduit and at least one intake port, wherein the at least one intake port fluidically connects the at least one supply conduit with an exterior of the test card, at least one well defining an opening extending from the first surface to the second surface and configured to receive a sample therein; wherein the at least one well comprises: a wall bounding the opening and extending between the first surface and the second surface of the card; a shelf defined by the wall, wherein a first portion of the wall extends from the shelf surface to the first surface and a second portion of the wall extends from the shelf surface to the second surface, and wherein the shelf protrudes from the first portion of the wall and connects the first portion of the wall to the second portion of the wall, and wherein the opening is narrower between the shelf and the second surface than between the shelf and the first surface, the shelf further defining a shelf surface substantially parallel to the first surface or the second surface; and a supply conduit opening defined in the wall at a position above at least a portion of the shelf such that the supply conduit opening and the at least the portion of the shelf are aligned circumferentially relative to the at least one well, the supply conduit opening connecting the at least one liquid supply conduit with the at least one well such that the at least one well is fluidically connected to the at least one intake port; the method comprising:
aligning a first mold plate with a second mold plate, wherein the first mold plate includes a first pin having a first shape corresponding to a portion of the at least one well extending from the shelf to the first surface, wherein the second mold plate includes a second pin having a second shape corresponding to a portion of the at least one well extending from the shelf to the second surface, and wherein the first pin is wider than the second pin; and
molding a test plate between the first mold plate and the second mold plate.

12. The method of claim 11 , wherein the shelf is created at the intersection of the first mold plate and the second mold plate.

13. The method of claim 11 , wherein the at least one well comprises a plurality of wells.

14. A test card comprising:
a body comprising a first surface and a second surface opposite the first surface, the body defining at least one liquid supply conduit and at least one intake port, wherein the at least one intake port fluidically connects the at least one supply conduit with an exterior of the test card;
at least one well defining an opening configured to receive a sample therein, the opening extending from the first surface to the second surface entirely through the body, such that the opening is configured to allow light to travel through the body;
wherein the at least one well comprises:
a wall bounding the opening and extending between the first surface and the second surface of the card;
a shelf defined by the wall, wherein the opening is narrower between the shelf and the second surface than between the shelf and the first surface; and
a supply conduit opening defined in the wall at a position above at least a portion of the shelf such that the supply conduit opening and the at least the portion of the shelf are aligned circumferentially relative to the at least one well, the supply conduit opening connecting the at least one liquid supply conduit with the at least one well such that the at least one well is fluidically connected to the at least one intake port;

a first clear sealing membrane disposed on the first surface of the body, wherein the first clear sealing membrane is configured to cover the opening at the first surface; and
a second clear sealing membrane disposed on the second surface of the body, wherein the second clear sealing membrane is configured to cover the opening at the second surface.

15. The test card of claim 14 , wh

Assignees

• Bio Merieux Inc

Inventors

• Mulder Ross
• Monroe Noah
• O'Bear Raymond
• Livingston Brian
• Yerbic Patrick Alan

Classifications

• B01L2400/0457

  passive flow or gravitation · CPC title

• B01L2300/0874

  Three dimensional network · CPC title

• B01L2300/021

  Identification, e.g. bar codes · CPC title

• B01L2300/0851

  Bottom walls · CPC title

• B01L3/502723

  characterised by venting arrangements · CPC title