Patent ID: 9693843
Date: 2017-07-04
CPC Classifications: A61C,A61M

Claim:
1. A portable handheld filter unit for collecting solid matters at a source, the source being liquids, solids, and gases containing said solid matters receivable from a suctioning system having a predetermined flow rate, said portable handheld filter unit comprising: at least one aspirator tip having a predetermined diameter; a housing having an inlet end and an outlet end, said aspirator tip engages said inlet end, said inlet end receives liquids, solids, and gases containing said solid matters from the suctioning system via said aspirator tip; a one-way valve adjacent and at said inlet end of said housing to prevent said liquids, solids, and gases containing said solid matters from exiting said inlet end from said housing; a stop between said inlet end of said housing and said valve for both (i) preventing the aspirator tip from contacting said valve to interfere with its operation and (ii) preventing said liquids, solids, and gases containing said solid matters from exiting said inlet end from said housing in cooperation with said valve; and at least one disposable depth and thickness filter made of a plurality of abutting layers of sintered porous plastic material having pores of substantially the same fixed pore size greater than 0.1 microns and less than 400 microns with pores from a layer partially overlapping pores of an abutting layer to define a tortuous path through the pores of said filter and having a certain depth and thickness that collects solid matters as small as one fifth to one thirtieth of the pore size within said filter's depth by having said solid matters collide and aggregate while traveling via said tortuous path through the pores of said filter, said filter being positioned entirely within said housing and adjacent said outlet end of said housing; wherein the liquids, solids, and gases containing said solid matters entering said inlet end travels through said one-way valve and said at least one filter via said tortuous path through the pores of said filter through the suctioning system with said solid matters as small as one fifth to one thirtieth of the pore size being collected within said at least one filter, with the remaining liquids, solids, and gases exiting said outlet end of said housing immediately without substantially adversely affecting said predetermined flow rate.