Blood flash needle

A device for drawing fluid from a lumen, the device comprising:

• a tubular needle comprising
• a proximal end;
• a distal end;
• a tubular wall extending from the proximal end to the distal end thereby defining a cylindrical cavity extending from the proximal end to the distal end;
• an aperture formed in the tubular wall, wherein the aperture is located between the proximal end and the distal end;
• a first needle portion extending from the aperture to the proximal end;
• a second needle portion extending from the aperture to the distal end;
• wherein the tubular needle extends through a body of unitary construction, the body comprising
• a forward portion and a rear portion, wherein the first needle portion extends from the forward portion of the body and the second needle portion extends from the rear portion of the body;
• an annular chamber disposed concentrically along a portion of the tubular needle, the chamber being defined by an inner surface of an outer wall of the body and encloses the aperture, wherein the cylindrical cavity is in fluid communication with the annular chamber, an internal diameter of the annular chamber being greater than an outer diameter of the tubular needle such that a gap is formed between the tubular needle and an inner wall of the annular chamber for allowing flow of the fluid into the annular chamber;
• and
• an observation portion formed in the outer wall of the body, the observation portion is structured to allow a visual observation of fluid inside the annular chamber, and
• wherein the observation portion is provided with one or more recesses on an outer surface of the outer wall of the body, the one or more recesses being structured to enhance the visibility of the fluid in the annular chamber, and the one or more recesses are formed integrally with the outer wall of the body of the device.