Capillary transport zone coated with adhesive
First Claim
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1. In a device providing a liquid transport zone for moving liquid along a path by capillary action, said zone comprising opposing surfaces joined together so as to provide a capillary spacing between said surfaces, said surfaces comprising a supporting material having an equilibrium contact angle with serum that is greater than about 80°
- or less than about 30°
,the improvement wherein at least one of said opposing surfaces is coated in at least a portion of said transport zone with an adhesive capable of bonding together said supporting material of said surfaces, said adhesive, when cured, having an equilibrium contact angle with serum that is less than about 80° and
greater than about 30°
.
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Accused Products
Abstract
A device for liquid transport, and a method of making it, are described. The device features a capillary transport zone comprising opposing sufaces formed from supporting material having unsatisfactory wettability. The wettability is improved by applying a coating of an adhesive.
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Citations
12 Claims
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1. In a device providing a liquid transport zone for moving liquid along a path by capillary action, said zone comprising opposing surfaces joined together so as to provide a capillary spacing between said surfaces, said surfaces comprising a supporting material having an equilibrium contact angle with serum that is greater than about 80°
- or less than about 30°
,the improvement wherein at least one of said opposing surfaces is coated in at least a portion of said transport zone with an adhesive capable of bonding together said supporting material of said surfaces, said adhesive, when cured, having an equilibrium contact angle with serum that is less than about 80° and
greater than about 30°
. - View Dependent Claims (2, 3, 4, 5, 6)
- or less than about 30°
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7. A method of making a device containing a liquid transport zone capable of transporting a patient sample through the zone via capillary action, said zone comprising opposing surfaces joined together so as to provide a capillary spacing between said surfaces, said surfaces comprising a supporting material having an equilibrium contact angle with serum that is outside the range of about 30°
- to about 80°
,the method comprising the steps of (a) providing said supporting material configured with said opposing surfaces; (b) coating at least a portion of said supporting material of at least one of said surfaces with an adhesive capable of bonding together said supporting material of said surfaces, said adhesive, when cured, having an equilibrium contact angle with serum that is less than about 80° and
greater than about 30°
, some of the adhesive being applied in at least a portion of the area of said transport zone;(c) joining said supporting materials; and (d) curing said adhesive. - View Dependent Claims (8, 9, 10, 11, 12)
- to about 80°
Specification