Patent ID: 9717523
Date: 2017-08-01
CPC Classifications: A61B,A61M

Claim:
1. A pericardium puncture needle assembly, the assembly comprising a guide wire and a puncture needle, wherein the guide wire extends within the puncture needle, the puncture needle extending along a longitudinal axis, the guide wire has a distal section and a straight proximal section, the distal section is formed by bending the guide wire and has a preset curved shape, the tip end of the distal section is a sharp tip structure, the distal section of the guide wire is configured to adopt a straightened state within the puncture needle and is configured to regain the preset curved shape when it passes out of the puncture needle, the sharp tip bends at least 90 degrees within a length range of no more than 3 mm starting from the sharp tip of the distal section of the guide wire in the preset curved shape, and the sharp tip is encircled by the preset curved shape of the distal section, and wherein the longitudinal axis of the puncture needle, the preset curved shape of the distal section, and the sharp tip all are within the same plane.