穿刺导丝
By introducing a magnetic positioning sensor at the distal end of the puncture guidewire and combining it with a three-dimensional system, radiation-free interatrial septal puncture was achieved. This solved the problems of inaccurate positioning and radiation exposure in existing technologies, improved the accuracy and safety of puncture, and reduced radiation and equipment costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI MICROPORT EP MEDTECH CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-07-17
AI Technical Summary
In existing technologies, transseptal puncture requires the assistance of X-rays or ultrasound for positioning, which poses health risks from radiation exposure and high equipment costs. Furthermore, the accuracy of electro-positioning technology is insufficient, limiting its widespread adoption.
A magnetic positioning sensor is introduced at the distal end of the puncture guidewire, which, combined with a three-dimensional system, accurately displays the puncture point location. Through magnetic field positioning combined with three-dimensional electrical positioning technology, radiation-free interatrial septal puncture can be achieved.
It improves the accuracy and safety of punctures, reduces radiation exposure and contrast fluid usage, shortens surgical complexity and learning time, and reduces harm to surgeons and patients.
Smart Images
Figure CN224505537U_ABST
Abstract
Claims
1. A puncture guide wire, characterized by, include: The guidewire body includes a plug segment, a main body segment, a curved segment and a puncture segment connected in sequence. The guidewire body has a penetration channel that axially passes through the main body segment and the curved segment. The end of the puncture segment connected to the curved segment has a cavity, and the cavity is connected to the penetration channel. A magnetic positioning sensor includes a sensor body and a cable. The sensor body is installed in the cavity, and the cable is connected to the sensor body and passes through the passage. The end of the cable away from the sensor body is electrically connected to the plug segment.
2. The puncture guidewire according to claim 1, characterized in that, The end of the puncture segment away from the curved segment has a needle-like structure and has a first puncture surface and a second puncture surface. The first puncture surface is located at the distal end of the second puncture surface, and the included angle between the first puncture surface and the second puncture surface is greater than 90°.
3. The puncture guidewire according to claim 1, characterized in that, The curved segment is U-shaped and includes an arc-shaped sub-segment, a first connecting sub-segment, and a second connecting sub-segment; The first connecting segment and the second connecting segment are respectively located at both ends of the arc length of the arc segment. The first connecting segment is used to connect the puncture segment, and the second connecting segment is used to connect the main body segment. The arc of the arc segment is a superior arc so that the puncture segment is inclined toward the main body segment.
4. The puncture guidewire according to claim 3, characterized in that, The curved section has a receiving groove on the side facing the U-shaped opening, the receiving groove being adapted for the sensor body to pass through and for accommodating the cable.
5. The puncture guidewire according to claim 4, characterized in that, The curved section is covered with a cover plate at the opening of the receiving groove, and the cover plate has a limiting protrusion on the side facing the receiving groove. The limiting protrusion is used to limit the radial displacement of the cable in the receiving groove.
6. The puncture guidewire according to claim 3, characterized in that, The curved section has several slots on one side facing the U-shaped opening. All of the slots are connected to the through-channel in the curved section and are arranged at intervals along the axial direction of the curved section.
7. The puncture guidewire according to claim 3, characterized in that, The second connecting segment has a docking groove at one end away from the arc-shaped segment, and the main body segment has a docking part at one end. The docking part is installed in the docking groove to achieve the connection and fixation between the curved segment and the main body segment.
8. The puncture guide wire according to any one of claims 3 to 7, wherein Also includes: A sleeve is fitted over the outside of the main body section and the curved section.
9. The puncture guidewire according to any one of claims 1-7, characterized in that, The plug segment includes a cylindrical electrode, an annular electrode, and an insulating component. The cylindrical electrode, the insulating component, and the annular electrode are sequentially arranged from the inside to the outside. The cylindrical electrode has a first soldering pin, and the annular electrode has a second soldering pin. The first soldering pin and the second soldering pin are respectively connected to the cable passing through the main body segment.
10. The puncture guidewire according to claim 9, characterized in that, The outer wall of the columnar electrode is provided with a connecting protrusion to increase the sleeving strength between the columnar electrode and the insulating member.