Arterial blood filter
US4676771A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 31, 1986 |
| Grant date | Jun 30, 1987 |
| Priority date | — |
| Expiry date | Mar 31, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/3623
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An arterial blood filter assembly (10) for removing undissolved gases and foreign bodies, particles, clots, etc., from blood flowing through the assembly (10) includes a housing (34) having an inlet (38) and outlet (44) and a vent (48) for venting undissolved gases from the housing (34). A filter media (60) is supported within the housing (34). The assembly (10) includes a blood flow dividing mechanism disposed between the inlet (38) and filter media (58) to divide blood flow from the inlet (38) into a plurality of spaced inlet streams flowing over and down the outer boundary of the filter media (52) into the tapering space between the media and housing wall, which causes the streams to spread sideways and meet, forming upward-flowing streams which carry the entrained bubbles upward, to the channels in the housing top (80) which direct the air bubbles to the vent (48). A method for removing undissolved gases from flowing blood in a filter assembly (10) includes the steps of dividing the inlet blood flow into the assembly (10) into a plurality of spaced inlet streams, filtering the undissolved gases from the flowing blood, forming a portion of the blood flow containing the filtered …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.