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

Claim 0:
1. A filter apparatus structured to be coupled to a housing of a device that employs a gas provided to the device through the filter apparatus, the filter apparatus comprising:
a housing portion having a first vertically disposed side wall, a second vertically disposed side wall opposite the first side wall, a front vertically disposed wall provided between the first side wall and the second side wall, a top wall connected to the front wall, the first side wall and the second side wall, and a bottom horizontally disposed portion opposite the top wall and having a first opening formed therein;
a first filter media portion attached to the bottom portion, wherein the first filter media portion comprises a coarse particle filter member that covers the first opening, the coarse particle filter member having a filtration capacity and pressure drop that are each lower than a filtration capacity and pressure drop of a fine particle filter member, and wherein the first filter media portion, the first side wall, the second side wall, the front wall, the top wall and the bottom portion form an inner chamber having a second opening opposite the front wall and in fluid communication with the first opening, via the first filter media portion; and
a first spring member provided on an exterior of the first side wall, and a second spring member provided on an exterior of the second side wall, wherein the first and second spring members each have a vertically disposed floating portion configured to engage a respective top wall of a first slot member and a second slot member of a port structure of the housing of the device and provide a downward sealing force to be exerted against the filter apparatus to create a seal between the bottom portion and an air inlet opening of a port structure of the housing of the device, in response to the filter apparatus being inserted into the port structure.