Gross filter for a drainage device
US6280429A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1998 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Dec 4, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/61
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A gross filter in a drainage device for filtering fluids drained from the pleural cavity of a patient comprising a filter body having a first side panel, second side panel, back panel and bottom panel that assemble to form a generally box-shape filter with open front and top portions. The gross filter is located in the first of two subchambers that comprise the collection chamber. The filter body further comprises a filter screen sized for filtering gross particulates, such as blood clots, that may become entrained in fluid drained from a patient. The gross body is configured so as to permit the further filtering of fluids when blood clots have formed and blocked the filter screen of the filter's bottom panel from fluid flow therethrough, thereby allowing uninterrupted filtering of blood into the collection chamber through the first and second side panels instead. To further facilitate the filtering of blood through the filter body when a blocked state exists at the bottom panel portion thereof, the first and second side panels are angled toward each other at their bottom ends and gradually spaced apart from the collection chamber walls in order to permit unimpeded filtering of flu…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.