An epidural needle is provided with a curved distal end to facilitate placement of a catheter into the epidural space of a spine. The distal end is further characterized by a primary bevel aligned to the longitudinal axis of the epidural needle at an angle of approximately 10 DEG . A secondary bevel also is provided at the extreme distal end of the needle. The secondary bevel is aligned to the longitudinal axis of the needle at an angle of between 60 DEG -80 DEG . The curve, the primary bevel and the secondary bevel all are symmetrical about common plane passing through the longitudinal axis of the needle. The secondary bevel aligned at an angle of 60 DEG -80 DEG to the longitudinal axis provides a sufficiently sharp point to penetrate easily into the epidural space, but provides sufficient blunting to avoid inadvertent damage to the dura matter.
申请公布号
WO0207801(A2)
申请公布日期
2002.01.31
申请号
WO2001US20606
申请日期
2001.06.26
申请人
BECTON, DICKINSON AND COMPANY;WEST, DAVID, A.;HONEY, MICHAEL, J.;REDOWL, DANIEL, L.
发明人
WEST, DAVID, A.;HONEY, MICHAEL, J.;REDOWL, DANIEL, L.