Design and methods for a device with blood flow restriction feature for embolus removal in human vasculature

A mechanical thrombectomy device with proximal flow restriction feature/elements, further comprising:

• the proximal restriction feature can be cell structure with smaller cell space, can be polymer cover, can be fabric/textures, can be polymer net, can be cover and/or net made from biocompatible metallic materials;
• the proximal restriction feature can block blood flow through the device and treatment vessel segment when the device is deployed during use;
• the proximal restriction feature can restrict blood flow through the device and treatment vessel segment when the device is deployed during use;
• the proximal restriction feature can limit blood flow through the device and treatment vessel segment when the device is deployed during use;
• the restriction feature can be integrated into the proximal portion or element of the device to block the lumen when the device is deployed during use;
• the restriction feature can be a part or away, have distance from the proximal portion or element of the device to block the lumen when the device is deployed during use;
• the proximal restriction portion can block blood flow during the application, and to eliminate or reduce the risk to break the clots or flush clots to distal;
• the proximal restriction portion can reduce blood flow during the application, and to eliminate or reduce the risk to break the clots or flush clots to distal;
• and,
• The proximal restriction portion will contact with vessel wall when the device is expanded and block blood flow during use.

A mechanical thrombectomy device system, further comprising:

• having a delivery portion and treatment portion fabricated from a single piece of Nitinol super elastic material or Nitinol shape memory alloy tubing;
• made from other biocompatible materials which exhibit super-elastic or shape memory properties;
• made by laser cutting, mechanical machining, chemical machining, electro chemical machining, or EDM, wherein;
• a distal portion is the treatment portion and can be fabricated from the same piece of tubing with the delivery portion;
• and,
• desired diameter and length can be achieved through heat setting process and/or mechanical forming method.