Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1998-06-03
2000-02-22
McDermott, Corrine
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
4351736, 604 4, A61M 3700, A61M 3100, C12N 1300
Patent
active
060274883
ABSTRACT:
A method and apparatus for introducing a preselected molecule into a living cell by contacting the cell with the preselected molecule and applying a multiple series of electrical pulses to the cell. The method can be utilized ex vivo. The multiple electrical pulses generate rotating electric fields which introduce transient pores in the living cell without killing the cell. The rotating electric fields are provided in a flow through chamber apparatus having more than two electrodes. A three-step pulse process, e.g. collection, electroporation, electrophoresis, is used to introduce the preselected molecule into the cell. A mechanical means of repositioning cells between successive pulses is also provided. The apparatus can also provide a means to pulse cells at different temperatures and then after pulsing, let the cells recover for a specified residence time at another temperature.
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Hofmann Gunter A.
Rabussay Dietmar
Genetronics Inc.
Haile Lisa A.
Hayes Michael J.
McDermott Corrine
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