Apheresis system with anticoagulant flow control
US6565806B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1998 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | Mar 13, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/3696
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apheresis system is disclosed which may include a separation chamber; a suspension flow path which communicates at one end with the separation chamber and includes a connector at the other end for connecting to a source of cellular suspension; an anticoagulant flow path which communicates at one end with the suspension flow path and includes a connector at the other end for connecting to an anticoagulant source; and a return flow path which communicates at one end with the separation chamber and communicates at the other end with a connector for connection directly to the suspension source or to the suspension flow path for returning one or more suspension components to the source. The anticoagulant flow path includes a flow restriction, such as an internal flow restriction, which limits the free flow of anticoagulants into the suspension flow path while preferably not completely stopping the flow of anticoagulant. The restriction may take various forms, but the preferred construction comprises a tubing segment of reduced inside diameter, providing resistance to the free flow of anticoagulant in the event of operator error or mechanical failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.