Patent ID: 11878122
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 7:
8. A filter member, comprising:
a frame portion including an inner frame portion and an outer frame portion disposed outside of the inner frame portion on a common base of the frame portion, the inner frame portion including a plurality of inner walls vertically disposed above the common base and positioned around an opening in the common base, and the outer frame portion including a plurality of outer walls vertically disposed above the common base, wherein a number of walls in the plurality of outer walls is less than a number of walls in the plurality of inner walls, leaving at least one portion of the common base without an outer wall of the outer frame portion, the frame portion further including a first groove disposed between a first one of the inner walls of the inner frame portion and a first one of the outer walls of the outer frame portion above the common base and a second groove disposed between a second one of the inner walls of the inner frame portion and a second one of the outer walls of the outer frame portion above the common base, wherein the first groove is structured to receive a first vertically disposed edge portion of a bottom perimeter portion of a housing portion of a second filter member, wherein the second filter member includes a second filter media portion located within the housing portion proximate the bottom perimeter portion and at least one spring member extending from the housing portion proximate the bottom perimeter portion, and wherein the second groove is structured to receive a second vertically disposed edge portion of the bottom perimeter portion of the housing portion of the second filter member, and wherein the inner frame portion is structured to be received within the bottom perimeter portion of the housing portion of the second filter member to releasably secure the filter member to the second filter member, and wherein the at least one portion of the common base without the outer wall of the outer frame portion is adapted to be disposed adjacent the at least one spring member extending from the housing portion proximate the bottom perimeter portion of the second filter member; and
a first filter media portion attached to the inner frame portion and covering the opening, wherein the first filter media portion comprises filter media adapted to filter a first particle size and wherein the second filter media portion comprises filter media adapted to filter a second particle size, different from the first particle size.