Systems and methods for accessing the lumen of a vessel

An apparatus for accessing the lumen of a vessel, the apparatus comprising:

• a reusable handheld device, wherein the reusable handheld device comprises,
• an imaging device attachment, wherein the imaging device attachment is utilized to secure an image capturing instrument to the reusable handheld device,
• an arm coupled to the imaging device attachment, wherein the arm provides a cartridge attachment,
• a slider stop bar coupled to a first slider, wherein the slider stop bar advances with the first slider, and
• a slide stop attached to the reusable handheld device that is positioned in a sliding direction of the slider stop bar to impede advancement of the slider stop bar when it comes into contact with the slide stop;
• and
• a disposable cartridge attached to the arm of the reusable handheld device, wherein the disposable cartridge houses a needle or sheath that advances to an insertion depth indicated on a depth scale to access the lumen of the vessel, and the disposable cartridge comprises
• a slider track receiving the first slider, and
• the first slider slidably attached to the slider track of the disposable cartridge, wherein the first slider is coupled to the needle or sheath, and
• when the first slider is advances a predetermined amount, the slider stop bar contacts the slide stop prior to contacting an end of the slider track to impede advancement, and a tip of the needle or sheath is at the insertion depth.