Apparatus and method for extrapulmonary blood gas exchange
US4850958A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1988 |
| Grant date | Jul 25, 1989 |
| Priority date | — |
| Expiry date | Jun 8, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/1698
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An in vivo extrapulmonary blood gas exchange device having a bundle comprised of a plurality of elongated gas permeable tubes being bound at each end and enclosed within a respective air tight proximal and distal chamber. A dual lumen tube having an outer lumen and an inner lumen is situated relative to the gas permeable tubes such that the outer lumen terminates within the proximal chamber and such that the inner lumen terminates within the distal chamber. The apparatus includes means for selectively adjusting the overall, outside diameter of the bundle of gas permeable tubes to provide either a furled, small insertion diameter when inserting the apparatus into the venae cavae of a patient or an unfurled, expanded oxygenation diameter after the apparatus is in place within the venae cavae and the bundle of gas permeable tubes is deployed therein. The apparatus is inserted into the patient through a single incision at one of the right external iliac, common femoral or internal jugular veins. A plurality of crimps along the length of the gas permeable tubes maintain the tubes in a spaced relation one from another such that blood surface contact with the gas permeable tubes is maximi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.