Fiber optic sensor retraction system

A fiber optic sensor retraction system comprising:

• a retraction system having a distal end and a proximal end;
• a hollow needle located at the distal end of the retraction system;
• an opening at the proximal end of the retraction system that is configured to receive medical fluids through a fluid channel,
• a spring housing connected between the distal and proximal ends of the retraction system;
• a spring disposed within the spring housing that is in mechanical communication with the fiber optic waveguide, and wherein the spring has a compressed position and a expanded position;
• an optical system, wherein the optical system comprises a fiber optic waveguide that is at least partially contained within the hollow needle, when the spring is in the compressed position, and extends through a Y-junction, and wherein the fiber optic waveguide is configured to allow entry of an emitted light from a biomarker luminescent material at a bevel of the hollow needle;
• and
• a syringe configured to contain a medical fluid, wherein the syringe is in fluid communication with the Y-junction.