Interstitial fluid collection and constituent measurement
First Claim
Patent Images
1. A method for testing a sample of body fluid, comprising:
- forming an artificial opening into a patient'"'"'s skin but not through a dermal layer of said skin with a penetration member, wherein said opening is sized to access a constituent-containing, substantially blood-free fluid in the skin;
drawing a sample of said blood-free fluid into a first portion of said penetration member that is outside of said dermal layer while a second portion of said penetration member is within said dermal layer; and
testing said sample for said constituent.
1 Assignment
0 Petitions
Accused Products
Abstract
An apparatus and method is disclosed for obtaining and measuring constituents in a sample of body fluid. The apparatus includes a member which is sized to penetrate into at least the dermal layer of skin to collect a sample of body fluid located within the dermal layer.
-
Citations
13 Claims
-
1. A method for testing a sample of body fluid, comprising:
-
forming an artificial opening into a patient'"'"'s skin but not through a dermal layer of said skin with a penetration member, wherein said opening is sized to access a constituent-containing, substantially blood-free fluid in the skin; drawing a sample of said blood-free fluid into a first portion of said penetration member that is outside of said dermal layer while a second portion of said penetration member is within said dermal layer; and testing said sample for said constituent. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. A method for testing a sample of body fluid, comprising:
- inserting a penetration member into a patient'"'"'s skin but not through a dermal layer of the skin wherein said penetration member is sized to access a constituent-containing, substantially blood-free fluid in the skin and wherein a first portion of said penetration member is outside of said dermal layer while a second portion of said penetration member is within said dermal layer; and
testing said accessed fluid for said constituent wherein said fluid is drawn into the first portion of said penetration member prior to said testing. - View Dependent Claims (9, 10, 11, 12, 13)
- inserting a penetration member into a patient'"'"'s skin but not through a dermal layer of the skin wherein said penetration member is sized to access a constituent-containing, substantially blood-free fluid in the skin and wherein a first portion of said penetration member is outside of said dermal layer while a second portion of said penetration member is within said dermal layer; and
Specification