Physiological fluid extraction with rapid analysis
First Claim
1. A device for analyzing a physiological fluid from a physiological tissue comprising:
- (a) a body, including a needle with a point for puncturing a physiological tissue and a channel in the body for conducting a physiological fluid extracted from the physiological tissue proximally from the point;
(b) sensors in the body, wherein the sensors are proximate the point of the needle and accessible to the physiological fluid conducting along the channel for analyzing the physiological fluid; and
(c) interrogation elements corresponding to the sensors in the body for obtaining information from the sensors, said interrogation elements in communication with an analyzer.
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Accused Products
Abstract
A device for sampling and analyzing a physiological fluid from the skin of a patient by puncture. The device includes a body and sensors. The body has a needle with a point for puncturing a physiological tissue and a channel in the body for conducting the physiological fluid away from the point. The sensors are located in the body and are accessible to the physiological fluid conducting along the channel for physiological fluid analysis. The device can be used to lance the skin and obtain a representative sample of the physiological fluid, with relatively simple procedures and quick analysis to minimize the exposure of the physiological fluid sample to air.
417 Citations
22 Claims
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1. A device for analyzing a physiological fluid from a physiological tissue comprising:
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(a) a body, including a needle with a point for puncturing a physiological tissue and a channel in the body for conducting a physiological fluid extracted from the physiological tissue proximally from the point;
(b) sensors in the body, wherein the sensors are proximate the point of the needle and accessible to the physiological fluid conducting along the channel for analyzing the physiological fluid; and
(c) interrogation elements corresponding to the sensors in the body for obtaining information from the sensors, said interrogation elements in communication with an analyzer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for analyzing a physiological fluid from a physiological tissue, comprising:
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(a) puncturing the physiological tissue with a lancing unit having a needle with a sharp point and a channel leading from the sharp point to a portion of the lancing unit distant from the sharp point, said needle comprising sensors adjacent said channel wherein said sensors are in communication with interrogation elements in communication with an analyzer;
(b) conducting a physiological fluid from the physiological tissue from the sharp point up the channel past said sensors; and
(c) directly analyzing the physiological fluid while the physiological fluid is in the channel employing said interrogation elements in communication with said analyzer. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A method for analyzing a physiological fluid from a physiological tissue, comprising:
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(a) installing a lancing unit into a shell such that it is removable therefrom after use, the lancing unit having a channel through a needle to a sharp point and having sensors positioned along the channel, the shell having interrogation elements corresponding to the sensors and a distal portion encircling the sharp point after installation, the interrogation elements being in direct communication with an analyzer;
(b) positioning the distal portion of the shell on the physiological tissue;
(c) sliding the lancing unit to extend the needle, pushing the sharp point from the shell to puncture the physiological tissue;
(d) conducting a physiological fluid from the physiological tissue from the sharp point up the channel;
(e) analyzing the physiological fluid at the sensors in the channel; and
(f) sliding the lancing unit relative to the shell to retract the sharp point into the shell and position the sensors proximate to the interrogation elements to communicate information from the sensors to the interrogation elements and from the interrogation elements to the analyzer.
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22. A method of making a device for analyzing a physiological fluid, comprising:
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(a) forming a lancing unit with a channel extending from a portion of the lancing unit through a needle to a sharp point;
(b) immobilizing chemicals that interact with one or more constituents of the physiological fluid at one or more sensors along the channel;
(c) forming a shell in which the lancing unit can slide, the shell having interrogation elements corresponding to the sensors to which information from the sensors can be communicated thereto when the lancing unit is in the shell at a retracted state; and
(d) installing the lancing unit in the shell wherein said interrogation elements are in communication with an analyzer.
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Specification