초록

A sampling apparatus for interstitial fluid includes a pressure ring surrounding a collection needle. The pressure ring and needle are movable relative to one another for the ring to first engage a patient's skin surface prior to insertion of the needle.

대표청구항 ▼

[ What is claimed is:] [1.] A sampler for collecting interstitial fluid from a skin layer, said sampler comprising:a sampling needle having an axis and a distal end;a first pressure surface at least partially surrounding said needle in spaced relation thereto;said needle and said first pressure surf

[ What is claimed is:] [1.] A sampler for collecting interstitial fluid from a skin layer, said sampler comprising:a sampling needle having an axis and a distal end;a first pressure surface at least partially surrounding said needle in spaced relation thereto;said needle and said first pressure surface movable relative to one another along a path of travel generally parallel to said axis with said needle; andfirst biasing means for biasing said first pressure surface to a position wherein said distal end of said needle is recessed behind said first pressure surface,said first biasing means being selected for said first pressure surface to be urged against said skin layer with a force sufficient to define a pressurized zone of interstitial fluid opposing said needle prior to penetration of said needle into said skin layer.