2 results about "Atrial wall" patented technology

This application relates to a head electrode assembly and an ablation catheter. The head electrode assembly is disposed at the distal end of the catheter assembly of the ablation catheter. The head electrode assembly includes a tip, a pressure sensor, and a limiting member. The tip has a receiving space extending axially to the proximal end face of the tip, and the tip is used to release ablation energy. The pressure sensor is located in the receiving space and at least axially abuts against the tip to detect external pressure on the tip. The pressure sensor is configured to sense at least one of the axial pressure and radial pressure on the tip. The limiting member is disposed at the tip, and the limiting member and the tip are configured to at least jointly limit the axial displacement of the pressure sensor. The pressure sensor can sense the contact pressure between the tip and the tissue, reducing the occurrence of excessive contact force between the tip and the tissue, thereby reducing tissue damage and lowering the risk of damage to the atrial wall and adjacent tissues; it also helps to reduce the occurrence of insufficient contact force between the tip and the tissue, leading to poor contact between the tip and the tissue.

This invention relates to the field of medical device technology, and more particularly to an auxiliary device for atrial ablation therapy. The device includes a contractile and expandable support body, which expands within the atrium to open it. The expanded support body has a hollow structure and adheres to the atrial wall, providing space for the atrial ablation procedure. After intervention, the support body expands within the atrium to open it, limiting atrial contraction and deformation. This reduces the difficulty of determining the ablation point during atrial ablation, allowing the operator to place the ablation guidewire more accurately and quickly, shortening the procedure time. Simultaneously, during the ablation guidewire's operation, the atrial wall does not undergo significant relative displacement due to the support body, thus achieving precise treatment and energy transfer, resulting in more ideal therapeutic effects, reduced operator difficulty, and improved surgical outcomes.