A needle and scope assembly for facilitating viewing inside the body of a patient, comprising: a hollow needle having a sharp puncturing tip at the distal end of the needle and having a lumen within the needle, the needle extending proximally to an external fluid delivery fitting connected to a source of fluid so that when the distal end of the needle is inserted into a patient, fluid can be emitted into the lumen and delivered into a patient's body, a visualization stylet within the lumen within the needle, the visualization stylet having a distal end and having a proximal handle, the stylet having an elongated stylet shaft extending from the handle and sized to be positioned in the lumen within the needle such that the stylet is relatively slidable within the lumen within the needle, and can be extended out through the distal end of the needle by positioning the visualization stylet using the handle, the elongated stylet shaft having a significantly smaller outside diameter than the inside diameter of the lumen within the needle, throughout the length of the stylet shaft except at said distal end wherein the stylet shaft is of a larger diameter substantially filling the lumen, the visualization stylet comprising a miniature videoscope, with a digital video camera and lens system positioned centrally at a blunt distal tip of the distal end and a connecting cable extending from the camera through the elongated stylet shaft to the handle for connection to image processing and display equipment, illumination means at said blunt distal tip of the stylet shaft, positioned adjacent to and alongside the camera and lens system, and said smaller outside diameter of the stylet shaft being sufficiently small in diameter as to leave a clearance for a fluid flow path between the stylet shaft and the lumen sufficient for flow of a fluid through the clearance when the distal end of the visualization stylet is extended out distally from the end of the lumen, but the visualization stylet when retracted into the needle such that the distal end is contained within the lumen, substantially filling the lumen and blocking or greatly restricting the flow path for fluid while leaving the sharp puncturing tip of the needle unobstructed for puncturing tissue, whereby the needle can be inserted through tissue of a patient with the distal end of the visualization stylet just inside a distal end of the lumen within the needle to provide illuminated video images, and once the needle has been inserted as desired, the visualization stylet can be moved distally relative to the needle via the handle to extend the distal end of the stylet sufficiently to open the flow path through said clearance, so that visualization and delivery of fluid through the needle can be accomplished simultaneously. a hollow needle having a sharp puncturing tip at the distal end of the needle and having a lumen within the needle, the needle extending proximally to an external fluid delivery fitting connected to a source of fluid so that when the distal end of the needle is inserted into a patient, fluid can be emitted into the lumen and delivered into a patient's body, a visualization stylet within the lumen within the needle, the visualization stylet having a distal end and having a proximal handle, the stylet having an elongated stylet shaft extending from the handle and sized to be positioned in the lumen within the needle such that the stylet is relatively slidable within the lumen within the needle, and can be extended out through the distal end of the needle by positioning the visualization stylet using the handle, the elongated stylet shaft having a significantly smaller outside diameter than the inside diameter of the lumen within the needle, throughout the length of the stylet shaft except at said distal end wherein the stylet shaft is of a larger diameter substantially filling the lumen, the visualization stylet comprising a miniature videoscope, with a digital video camera and lens system positioned centrally at a blunt distal tip of the distal end and a connecting cable extending from the camera through the elongated stylet shaft to the handle for connection to image processing and display equipment, illumination means at said blunt distal tip of the stylet shaft, positioned adjacent to and alongside the camera and lens system, and said smaller outside diameter of the stylet shaft being sufficiently small in diameter as to leave a clearance for a fluid flow path between the stylet shaft and the lumen sufficient for flow of a fluid through the clearance when the distal end of the visualization stylet is extended out distally from the end of the lumen, but the visualization stylet when retracted into the needle such that the distal end is contained within the lumen, substantially filling the lumen and blocking or greatly restricting the flow path for fluid while leaving the sharp puncturing tip of the needle unobstructed for puncturing tissue, whereby the needle can be inserted through tissue of a patient with the distal end of the visualization stylet just inside a distal end of the lumen within the needle to provide illuminated video images, and once the needle has been inserted as desired, the visualization stylet can be moved distally relative to the needle via the handle to extend the distal end of the stylet sufficiently to open the flow path through said clearance, so that visualization and delivery of fluid through the needle can be accomplished simultaneously.