3 results about "Distal protection" patented technology

The utility model provides a kind of intracranial stent retrieval protection device, it is related to medical instrument technical field, including stent retrieval part, protection part and connecting part;The distal end of stent retrieval part is connected with connecting part;Connecting part distal end connects protection part, and the protection part is used to capture escaped embolus;Filter membrane is provided on the protection part, and the distal end of filter membrane is retracted together to middle part;Protection wire is peripherally arranged on the outside of protection part, filter membrane is arranged between protection wire and protection part, the proximal end of protection wire is connected to the connecting part, and the distal end of protection wire is gathered in the distal end of protection part;The utility model is combined by stent retrieval part and protection part, stent retrieval part and protection part are pressed and held together in microcatheter, when releasing, first release distal end protection part, then release stent retrieval part at embolus, let stent retrieval part bear stent retrieval function, protection part prevents embolus escape, for intracranial blood vessel and other small and tortuous blood vessel with inner diameter, the device has better performance.

This application relates to the field of medical device technology, specifically to a distal protection device, including a filter and a support stent. The proximal end of the support stent has an opening, and the support stent includes a column segment. The distal end of the column segment is connected to the proximal opening of the filter. The radial dimension of the support stent is adjustable and has an expanded state and a contracted state. In the expanded state, the radial dimension of the column segment is not less than the radial dimension of the proximal opening of the filter. In this distal protection device, the support stent is connected to the proximal opening of the filter. In the expanded state, the radial dimension of the column segment is not less than the radial dimension of the proximal opening of the filter. The column segment adheres to the inner wall of the blood vessel. Compared to related technologies that rely solely on a support ring to provide radial force, the column segment can provide greater radial support force, significantly improving the adhesion performance between the filter and the inner wall of the blood vessel, reducing the risk of thrombus escape from between the proximal opening of the filter and the inner wall of the blood vessel. This makes the distal protection device suitable for the treatment of vascular lesions with severe plaque and calcification.

This application relates to an implant delivery assembly with a distal protection feature. A delivery system for deploying a medical implant includes an elongated delivery wire assembly slidably disposed within the lumen of a delivery catheter. The delivery wire assembly has an implant loading region configured to place an implant when the delivery wire assembly is confined within the lumen of the delivery catheter and the implant is in a compressed delivery configuration. The delivery wire assembly also includes a distal end protection feature for the implant, having a central portion distally connected to the delivery wire assembly at the implant loading region and a peripheral portion extending proximally from the central portion. When the delivery wire assembly, the implant, and the distal end protection feature are confined within the lumen of the delivery catheter, the peripheral portion at least partially covers the distal end portion of the implant. When the implant is released from the lumen of the delivery catheter and is in an expanded configuration, the peripheral portion remains extending proximally.