Disposable skin perforator and blood testing device
First Claim
Patent Images
1. A skin perforator for obtaining a sample of blood by puncturing the skin comprising:
- (a) a pressure plate containing an aperture formed therein wherein said pressure plate is placed adjacent to the area of skin to be punctured;
(b) a cover plate having a resilient convex panel formed therein, said cover plate being attached to said pressure plate and said convex panel having a point penetrating barb formed integrally therefrom and directed inward toward said aperture in said pressure plate wherein a pressure applied to the convex panel and directed toward said pressure plate overcomes the resistance of said convex panel and said convex panel undergoes at least a partial inversion to cause said barb to suddenly and rapidly penetrate the skin causing a puncture, said convex panel having a memory so as to resiliently return to its original convex shape upon removal of said pressure thereby withdrawing the barb from the skin.
0 Assignments
0 Petitions
Accused Products
Abstract
A device that pierces the skin due to the collapsing of dome between the fingertips. Immediately after a puncture is made, a blood or exudate sample can be collected on an absorbent test strip laminated on the pressure plate. Flow enhancement of blood or exudate from the puncture site is achieved by maintenance of pressure around the site and on the imparting of a vacuum within the device.
296 Citations
22 Claims
-
1. A skin perforator for obtaining a sample of blood by puncturing the skin comprising:
-
(a) a pressure plate containing an aperture formed therein wherein said pressure plate is placed adjacent to the area of skin to be punctured; (b) a cover plate having a resilient convex panel formed therein, said cover plate being attached to said pressure plate and said convex panel having a point penetrating barb formed integrally therefrom and directed inward toward said aperture in said pressure plate wherein a pressure applied to the convex panel and directed toward said pressure plate overcomes the resistance of said convex panel and said convex panel undergoes at least a partial inversion to cause said barb to suddenly and rapidly penetrate the skin causing a puncture, said convex panel having a memory so as to resiliently return to its original convex shape upon removal of said pressure thereby withdrawing the barb from the skin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A skin perforator for obtaining and collecting a sample of blood by puncturing the skin comprising:
-
a pressure plate containing an aperture wherein said pressure plate is placed adjacent to the area of skin to be punctured; an absorbent test strip attached to said pressure plate to absorb blood or exudate flowing from a puncture site formed by the penetration of a barb; a cover plate having a resilient convex panel formed therein, said cover plate being attached to said pressure plate and said convex panel having a point penetrating barb formed integrally therefrom and directed inward toward said aperture in said pressure plate wherein a pressure applied to the convex panel and directed toward said pressure plate overcomes the resistance of said convex panel and said convex panel undergoes at least a partial inversion to cause said barb to suddenly and rapidly penetrate the skin causing a puncture, said convex panel having a memory so as to resistantly return to its original convex shape upon removal of said pressure thereby withdrawing the barb from the skin. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
-
21. A method for puncturing the skin and collecting a blood sample comprising:
-
(a) isolating an area of skin to be punctured; (b) placing a skin perforator device adjacent to the area to be punctured, said skin perforator device comprising a pressure plate containing an aperture surrounding the area of skin to be punctured, an absorbent test strip attached to said pressure plate to absorb blood or exudate flowing from a puncture site formed by the penetration of a barb, a cover plate having resilient convex panel formed therein, said cover plate being attached to said pressure plate and said convex panel having a point penetrating barb formed integrally therefrom and directed inward toward said aperture in said pressure plate; (c) applying a pressure to overcome the resistance of said convex panel and to cause at least a partial inversion of said convex panel and a rapid and sudden penetration of the skin by said barb; (d) reducing said pressure such that said convex panel resiliently returns to its original convex shape thereby withdrawing the barb from said skin; (e) maintaining a pressure upon said skin perforator to enhance blood flow from the puncture and obtain essentially immediate collection of blood or exudate by said test strip. - View Dependent Claims (22)
-
Specification