A needle assembly includes an elongated, hollow, hypodermic needle and a temperature measurement device at least partially disposed within the needle. The temperature measurement device comprises a plurality of parallel thermal sensors collectively retained in a fixed relationship within a common dielectric sheath. Each thermal sensor includes a temperature-sensing region which is capable of generating a voltage in proportion to the sensed temperature. The temperature-sensing regions for the plurality of thermal sensors are arranged in an offset relationship within the hypodermic needle, with each temperature-sensing region located at a different position relative to the sharpened tip of the hypodermic needle. Accordingly, in use, needle assembly is designed to compile temperature measurements at multiple locations along the length of the needle, thereby yielding a comprehensive and accurate temperature profile of the body into which the hypodermic needle is inserted.
