Abstract: A balloon catheter retractor (1), comprising a balloon catheter (13) and a balloon (12) fixed on the balloon catheter (13), wherein when the balloon (12) is inflated with a fluid, the balloon (12) bends and drives the balloon catheter (13) to bend correspondingly. By applying a radial limit to the balloon (12), the balloon (12) does not expand in a diametrical direction when expanding to a certain diameter. The balloon catheter retractor (1) can enhance the bending capacity and the characteristic of maintaining the bending performance.

Abstract: Disclosed is a curved balloon catheter retractor, comprising a positioning balloon (11) provided at the head of a catheter (10), and a bendable curved balloon (12) provided at a portion on the catheter (10) that is close to the head, wherein the positioning balloon (11) and the curved balloon (12) are respectively connected to respective injection ports at the tail of the catheter (10) by means of pipelines inside the catheter (10); and a handle (14) is provided at the tail of the catheter (10) for adjusting the position of the catheter (10). In a non-use state, the positioning balloon (11) and the curved balloon (12) are tightly attached to the catheter (10).

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

Abstract: A human cavity inner wall three-dimensional mapping method, and a corresponding device and system, comprising: at least one field generating device which generates a plurality of distinguishable fields under excitation of a drive signal; at least one field sensor located in a target device for detecting the distinguishable fields to generate a sensor signal; and a positioning signal processing device for transmitting the drive signal to the field generating device and detecting the output of the field sensor signal to acquire data of five-dimensional position and orientation coordinates of a position on the target device where the sensor is located.