US Patent 7556622 Selectively openable tissue filter

A tissue filter for medical collection is disclosed. The tissue filter includes a first member, a second member, and filter material secured thereto. The first and second members are selectively engaged with one another to define a filter body having a collection cavity. The collection cavity is open at one end for tissue to flow into the collection cavity. The first member and the second member may be selectively separated to facilitate tissue removal from the collection cavity.