US 11,986,585 B2
Magnetic filter apparatus and method
George Charles Martin Frodsham, London (GB); Quentin Andrew Pankhurst, Hertfordshire (GB); Richard Alan Wenman, Essex (GB); and Simon Richard Hattersley, London (GB)
Assigned to MEDISIEVE LTD, (GB)
Filed by MEDISIEVE LTD, London (GB)
Filed on Oct. 30, 2020, as Appl. No. 17/085,754.
Application 17/085,754 is a continuation of application No. 16/287,169, filed on Feb. 27, 2019, abandoned.
Application 16/287,169 is a continuation of application No. 15/264,778, filed on Sep. 14, 2016, granted, now 10,265,457, issued on Apr. 23, 2019.
Claims priority of provisional application 62/218,211, filed on Sep. 14, 2015.
Prior Publication US 2021/0046237 A1, Feb. 18, 2021
Int. Cl. A61M 1/36 (2006.01)
CPC A61M 1/3618 (2014.02) [A61M 1/362 (2014.02); A61M 2206/11 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A magnetic hemofilter assembly comprising:
a first permanent magnet;
a removable filter housing, the filter housing defining an input port, and output port, and one or more volumes within the filter housing, the input port configured to receive blood at one or more flow rates, wherein the one or more volumes are configured to receive the blood; and
a stack of a plurality of meshes, wherein the plurality of meshes comprises a first mesh, each mesh of the plurality of meshes comprises a plurality of wires, the stack of a plurality of meshes disposed within the filter housing, the first mesh in fluid communication with the input port, the plurality of wires comprising a magnetizable material, wherein the received blood flows in from an input port and then through the stack in a direction of flow perpendicular to a surface of the plurality of meshes, wherein flow of blood through the stack is perpendicular to blood flowing in the input port and blood flowing in the output port,
wherein the first permanent magnet produces a magnetic field that is substantially perpendicular to the stack of a plurality of meshes and sufficiently strong to induce a magnetic field in the magnetizable material such that a high magnetic field gradient is generated in one or more regions near a surface of each wire of the plurality of wires, wherein blood-borne magnetic targets are captured in one or more regions having the high magnetic field gradient, wherein the direction of flow is parallel to a direction of a magnetizing field.