7 results about "Embolic Protection Devices" patented technology

An embolic protection device includes a frame, an edge filter screen, and a plurality of supporting rods that are arranged at intervals. Each supporting rod includes a first tail end, a second tail end, and at least one head end that faces a distal end. The first tail end and the second tail end are separately connected to two opposite sides of the frame. The first tail end and the second tail end separately form a first line segment and a second line segment with the head end. The first line segment extends in a direction from the first tail end to the head end and gradually moves away from the frame, and the second line segment extends in a direction from the second tail end to the head end and gradually moves away from the frame.

This invention provides a graded embolization protection device, belonging to the field of vascular interventional medical device technology. The device includes a delivery guidewire, with multiple protection units fixedly arranged at intervals at the distal end of the guidewire. Each protection unit has a proximal open end and a distal closed end, and each protection unit has a flexible support frame for support at a target location. Multiple open areas are formed on the support frame, and a soft, elastic filter membrane is arranged on the edge of each open area or on the sidewall of the entire support frame to cover the open area. In use, the multiple protection units are axially deployed graded along the target location, with the flexible support frame of each protection unit fully conforming to the inner wall of the blood vessel, and the soft, elastic filter membrane intercepting emboli in the blood flow. This addresses at least the technical problems of existing embolization protection devices, such as poor flexibility due to the high coverage of the rigid support structure, difficulty in adapting to complex vascular morphologies, and poor fit with the vascular wall, leading to embolism escape.

Embolic protection device for insertion into an aortic arch, with a filter unit, a frame and a feed unit, wherein the filter unit is arranged at the frame and the frame provides a proximal area having a proximal shape, which is arranged in an inner area of the frame and is connected to the feed unit, wherein the proximal shape has a first part and a second part, wherein the second part is formed at one end of the first part.

This invention discloses an embolism protection device, belonging to the field of interventional therapy device technology. It includes: a slender support body and a filter assembly sleeved around the slender support body. The filter assembly includes a proximal filter membrane support and a filter membrane. The proximal end of the filter membrane is an open end, and the distal end is a closed end. The proximal end of the filter membrane is connected to the slender support body via the proximal filter membrane support. The open end forms an opening for thrombi to enter the filter membrane, and the closed end forms a seal to trap the thrombus. The filter membrane includes a recessed portion formed from the closed end towards the proximal end, and the recessed portion is fixedly connected to the slender support body. With this configuration, when the filter membrane intercepts thrombi, the recessed portion guides the intercepted thrombi to be more dispersed within the filter membrane around the recessed portion. Compared to the closed end of a traditional conical filter, the closed end of the filter membrane is less prone to thrombus accumulation, reducing the risk of blood flow obstruction due to excessive thrombus buildup.

The application discloses a processing equipment and a processing method of an embolism protection device, the embolism protection device comprising a support frame and a filter screen connected to the support frame, the processing equipment comprising: a mold comprising a first mold and a second mold movably matched to clamp the support frame and the filter screen; a shaping assembly movably entering and leaving a hollow area to be in abutment with the filter screen for shaping, the shaping assembly comprising: a crown having a shaping surface corresponding to a configuration of the filter screen; a driving mechanism in transmission cooperation with a side of the crown away from the shaping surface; and a power supply assembly comprising a coil to heat the support frame through electromagnetic induction and adjustable in distance from the support frame. The application integrates the shaping of the filter screen and the combination of the filter screen and the support frame from inside to outside based on the heating of the support frame, improves production efficiency and product qualification rate, and reduces operation requirements.

A collapsible, transluminally deliverable embolic protection device (200) for temporarily positioning in the aortic arch is disclosed. The device is connectable to a transluminal delivery unit (130) extending proximally from a connection point (131). The device has a frame with a periphery, and a blood permeable unit within said periphery for preventing embolic particles from passing therethrough into side vessels of said aortic arch to the brain of a patient. Further, the device has at least one tissue apposition sustaining unit, not being a delivery shaft of said device, for application of a force offset to said connection point at said device, such as at said periphery, towards an inner wall of said aortic arch when said device is positioned in said aortic arch, such that tissue apposition of said periphery to an inner wall of said aortic arch is supported by said force. In addition related methods are disclosed.