Abstract: The invention discloses a three-dimensional atrial septal puncture method including positioning the heart from a body surface by a three-dimensional projection positioning method and displaying interventional instruments by the three-dimensional system and guiding the same into a heart cavity. The method also includes constructing a right atrium three-dimensional model by delivering a catheter with a positioning device to the right atrium and reconstructing and fusing pre-operative image data by the three-dimensional system. The method also includes setting parameters, connecting an interventional operating device with a pressure sensor tail wire and an electrode tail wire, and displaying a guidewire or a puncture needle. The method includes delivering and positioning the long sheath, analyzing and marking the fossa ovalis position by a structure and potential method.

Abstract: The invention discloses a three-dimensional atrial septal puncture method, comprising the steps of: positioning the heart from a body surface by a three-dimensional projection positioning method, displaying interventional instruments by the three-dimensional system and guiding the same into a heart cavity; constructing a right atrium three-dimensional model by delivering a catheter with a positioning device to the right atrium; reconstructing and fusing pre-operative image data by the three-dimensional system; mainly analyzing the right atrial septal side to mark the puncture site; setting parameters of the three-dimensional system, connecting an interventional operating device with a pressure sensor tail wire and an electrode tail wire, connecting the interventional operating device to the three-dimensional system, and displaying a guidewire or a puncture needle in the three-dimensional system in real time; delivering a long sheath into the superior vena cava, and positioning the long sheath by using the thr